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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 530. Отображено 100.
21-03-2013 дата публикации

Camshaft with Camshaft Adjuster

Номер: US20130068180A1
Автор: Heywood Jonathan, Lindner Mario, Wappler Sebastian
Принадлежит:

A camshaft for actuating the gas exchange valves of an internal combustion engine. The camshaft includes a camshaft tube, a hydraulic camshaft adjuster, a valve for controlling the hydraulic fluid supplied to the camshaft adjuster and an actuation device, arranged in the interior of the camshaft tube, for actuating the valve. The actuation device is secured against displacement in the axial direction. The camshaft is light-weight and functional elements in addition to the actuation device and optionally the valve can be integrated into the interior of the camshaft. It should furthermore be possible to arrange an oil or vacuum pump at the end of the camshaft opposite the camshaft adjuster, the pump being drivable by the camshaft. The actuation device is designed as an electromagnetic, piezoelectric or electrical actuator and is connected to the camshaft tube such that they rotate together. 17-. (canceled)8. A camshaft for actuating the gas exchange valves of an internal combustion engine , the camshaft comprising:a camshaft tube;a hydraulic camshaft adjuster;a valve configured to control hydraulic fluid supplied to the camshaft adjuster; andan actuating device disposed in an interior of the camshaft tube, the actuating device configured to actuate the valve which is secured in the axial direction to prevent displacement,wherein the actuating device is an electromagnetic, piezoelectric or electric actuator and is connected to the camshaft tube in a rotationally-fixed manner.9. The camshaft as claimed in claim 8 , wherein the connection between the actuating device and the camshaft tube is a releasable connection.10. The camshaft as claimed in claim 8 , further comprising:current supplying means for supplying current to the actuating device provided in the interior of the camshaft tube and connected thereto in a rotationally-fixed manner.11. The camshaft as claimed in claim 10 , comprising further elements connected to the camshaft tube in a rotationally-fixed manner ...

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Номер записи: 1
21-03-2013 дата публикации

VALVETRAIN OIL CONTROL SYSTEM AND OIL CONTROL VALVE

Номер: US20130068182A1
Автор: Beneker Gerrit V., Dayton Robert A., Keller Robert D.
Принадлежит: EATON CORPORATION

A hydraulic control system includes an oil control valve to control oil flow within a valvetrain. The control valve varies the flow rate to actuate an engine component from a first position to a second position based upon fluid pressure from the control valve. Varying the flow rate through the control valve includes increasing the flow rate through the control valve to increase the pressure to a first level to actuate the engine component to the first position. After the engine component is actuated, the flow rate through the control valve is maintained at a level sufficient to maintain the engine component in the first position. To actuate the engine component to the second position the flow rate through the control valve is then decreased. The fluid flow rate through the control valve is then maintained at a level sufficient to maintain the engine component in the second position. 1. A hydraulic control system for a valve train comprising:an oil reservoir;an oil pump fluidly connected to the oil reservoir;at least one engine component in fluid communication with the oil pump and the oil reservoir;an oil control valve in fluid communication with the oil reservoir and the oil pump;wherein the oil enters the oil control valve prior to the at least one engine component; and a housing defining a first chamber, a second chamber and a third chamber;', 'a wall of the housing located between the first and the second chamber;', 'wherein the wall defines an orifice to form a valve seat;', 'a flexible diaphragm mounted to the housing and forming a second wall between the second chamber and the third chamber;', 'a valve member mounted on the flexible diaphragm and including a poppet, wherein the valve member extends through the orifice and is moveable relative to the valve seat based upon a change in fluid pressures within at least one of the first chamber, the second chamber, and the third chamber;', 'a solenoid valve to selectively fluidly connect the first chamber to the ...

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Номер записи: 2
28-03-2013 дата публикации

ELECTROHYDRAULIC VALVE ACTUATOR WITH RECIPROCATING CAM

Номер: US20130074790A1
Автор: RABHI Vianney
Принадлежит:

An electrohydraulic valve actuator with cylinder and reciprocating cam includes: a valve-actuating hydraulic cylinder () which opens a valve of an internal combustion engine () via a valve-opening solenoid valve (), a valve-opening high-pressure duct (), and an incoming high-pressure hydraulic circuit (), and which closes the valve via a valve-closing solenoid valve (), a valve-closing high-pressure duct () and an outgoing high-pressure circuit (), a hydraulic positive displacement pump () cooperating with a pump non-return valve () and a pump outlet sealing solenoid valve () and the outlet of which is connected to a low-pressure circuit () and to a low-pressure reservoir () supplied by a replenishing pump () and a replenishing reservoir (). 1100. Electrohydraulic valve actuator with cylinder and reciprocating cam for internal combustion engine () , characterized in that it comprises:{'b': 2', '3', '101', '100', '2', '4', '5', '2', '101', '6', '7', '2', '101', '5', '7, 'at least one valve-actuating hydraulic cylinder () which comprises at least one valve-actuating piston () which opens at least one valve () of an internal combustion engine () or of a piston compressor when the cylinder () is connected by a valve-opening solenoid valve () to at least one incoming high-pressure hydraulic circuit (), said cylinder () closing said valve () when it is connected by a valve-closing solenoid valve () to at least one outgoing high-pressure circuit (), and said cylinder () maintaining said valve () open when it is connected neither to the incoming high-pressure circuit () nor to the outgoing high-pressure circuit ();'}{'b': 8', '9', '10', '9', '8', '102', '100, 'at least one hydraulic positive displacement pump () comprising at least one outlet connected to a low-pressure circuit () connected to at least one low-pressure reservoir () and at least one inlet connected to said low-pressure hydraulic circuit (), said pump () rotating at a speed proportional to that of a ...

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Номер записи: 3
09-05-2013 дата публикации

INFINITELY VARIABLE PRESSURE-CONTROL VALVE

Номер: US20130112293A1
Автор: Buse Werner, Dohrmann Rolf, Sadowski Christoph, Schnelker Franz-Josef
Принадлежит: PIERBURG GMBH

A pressure-control valve includes a housing, a coil carrier, a coil wound on the coil carrier, a first bearing, an armature comprising a valve member. The armature is configured to be axially displaced in the first bearing. A core. A flux guiding device. A connection sleeve comprises a valve seat for the valve member. A first connection bore is configured to be connected with a tank and with the connection sleeve. A second connection bore is configured to be connected with a consumer. An end of the connection sleeve distant from the core comprises a control bore with a control member supported therein. The armature and the control member are configured to be in a force-transmitting operative connection at least in an opening direction of the pressure-control valve 115-. (canceled)16. A pressure-control valve comprising:a housing;a coil carrier;a coil wound on the coil carrier;a first bearing;an armature comprising a valve member, the armature being configured to be axially displaced in the first bearing;a core;a flux guiding device;a connection sleeve comprising a valve seat for the valve member;a first connection bore configured to be connected with a tank and with the connection sleeve; anda second connection bore configured to be connected with a consumer;wherein,an end of the connection sleeve distant from the core comprises a control bore with a control member supported therein, andthe armature and the control member are configured to be in a force-transmitting operative connection at least in an opening direction of the pressure-control valve.17. The pressure-control valve as recited in claim 16 , wherein claim 16 ,the housing comprises a lower housing part and an upper housing part,the lower housing part comprises the connection sleeve, the first connection bore, and the second connection bore, the lower housing part being arranged in an interlocking manner or in a force-fitting manner in the upper housing part,a part of the lower housing part facing the core ...

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Номер записи: 4
31-10-2013 дата публикации

OPERATION CONTROL SYSTEM FOR A SOLENOID VALVE OF A COMBUSTION ENGINE AND METHOD

Номер: US20130284131A1
Автор: TRAVERSA Piergiacomo
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

An operation control system for a solenoid valve of a combustion engine having at least one solenoid valve to hydraulically couple and decouple actuation forces of a cam with a gas valve of a cylinder. A driving unit operates the solenoid valve, and a first detection device monitors a status of the solenoid valve by supplying a status signal to a control unit during an engine intake cycle phase of the cylinder. A second detection device analyzing a system parameter corresponding to the cylinder and supplying a control signal during an engine cycle phase other than the engine intake cycle phase. The control unit delays the status signal based on the status signal to temporally synchronize the status signal with the control signal, or a secondary control signal based thereon, and compares the status signal with the control signal or the secondary signals with each other using an AND-Function. 2. The system as claimed in claim 1 , wherein the control signal is generated during an engine cycle expansion phase claim 1 , an engine cycle discharge phase or an engine cycle compression phase of the cylinder.3. The system as claimed in claim 1 , wherein the delay is generated by at least one of an electronic component or a computer operation system running the control unit. The following documents are incorporated herein by reference as if fully set forth: U.S. Provisional Application No. 61/639,277, filed Apr. 27, 2012.Hydraulic valve actuation systems have been employed to reduce fuel consumption in the last years. They use solenoid valves to couple a high pressure chamber with a lower pressure chamber. When the solenoid valve is open the actuation of the cams is not transmitted to the gas valves but simply circulates the hydraulic fluid in the hydraulic system. When the solenoid valve is closed the chambers are separated from each other establishing a hydraulic coupling between the camshaft and the gas valves.Sometimes the solenoid valves get stuck and cause misfire in the ...

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Номер записи: 5
19-12-2013 дата публикации

Integrally Cast Block-Head with Solenoid Pack Cover

Номер: US20130333646A1
Автор: Flora Ryan A.
Принадлежит:

An engine assembly includes a uni-cast, piston-enclosing chamber structure and a solenoid valve pack. The chamber structure includes a piston-receiving chamber, a gas intake port, an intake valve port, a gas exhaust port, and an exhaust valve port. The gas intake port communicates with the intake valve port, and the gas exhaust port communicates with the exhaust valve port. The solenoid pack includes gas intake and gas exhaust solenoid valve assemblies. The solenoid pack is attachable to the chamber structure such that the gas intake valve port axially aligns with a gas intake valve-receiving column, and the gas exhaust valve port axial aligns with a gas exhaust valve-receiving column. The intake valve is bi-directionally displaceable as received in the gas intake valve port and the gas intake valve-receiving column. Similarly, the exhaust valve is bi-directionally displaceable as received in the gas exhaust valve port and gas exhaust valve-receiving column. 1. An engine assembly , the engine assembly comprising , in combination:a uni-cast, piston-enclosing chamber structure, the chamber structure comprising a piston-receiving chamber, a gas intake port, an intake valve port, a gas exhaust port, and an exhaust valve port, the gas intake port and the intake valve port being in communication with one another, the gas exhaust port, and the exhaust valve port being in communication with one another; anda solenoid pack, the solenoid pack comprising a gas intake valve-receiving column, a gas exhaust valve-receiving column, a gas intake solenoid valve assembly, and a gas exhaust solenoid valve assembly, the gas intake solenoid valve assembly comprising a first solenoid assembly and an intake valve, the gas exhaust solenoid valve assembly comprising a second solenoid assembly and an exhaust valve, the solenoid pack being attachable to the chamber structure such that the intake valve port is in axial alignment with the gas intake valve-receiving column, and the exhaust valve ...

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Номер записи: 6
02-01-2020 дата публикации

APPARATUS AND METHOD FOR A HYDRAULIC VALVETRAIN SYSTEM

Номер: US20200003087A1
Автор: Child Matthew, HARTILL John, SAUNDERS Jonathan, WYATT Bethan
Принадлежит:

Apparatus () for a hydraulic valvetrain system () comprising: a first oil retaining means 5 (), a second oil retaining means () and an oil conveyance means () having a first end () operably connected to the first oil retaining means () and a second end () operably connected to the second oil retaining means (). The second oil retaining means () is configured to receive oil from the first oil retaining means () via the oil conveyance means (), the first oil retaining means () is configured to receive oil from the oil 10 conveyance means () and the oil conveyance means () is configured to receive oil from the second oil retaining means (). 119-. (canceled)20. An apparatus for a hydraulic valvetrain system , the apparatus comprising:a first oil retaining means;a second oil retaining means; and the second oil retaining means is configured to receive oil from the first oil retaining means via the oil conveyance means during operation of the hydraulic valvetrain system;', 'the first oil retaining means is configured to receive oil from the oil conveyance means following cessation of operation of the hydraulic valvetrain system; and', 'upon contraction of an oil volume during a reduction of oil temperature, oil from the second oil retaining means passes into the oil conveyance means to prevent air entering the hydraulic valvetrain system., 'an oil conveyance means having a first end operably connected to the first oil retaining means and a second end operably connected to the second oil retaining means; wherein'}21. The apparatus for a hydraulic valvetrain system according to claim 20 , wherein the second oil retaining means is at least partially located below the first oil retaining means.22. The apparatus for a hydraulic valvetrain system according to claim 20 , wherein the oil conveyance means comprises a first oil conveyance means and a second oil conveyance means.23. The apparatus for a hydraulic valvetrain system according to claim 22 , wherein the first oil ...

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Номер записи: 7
02-01-2020 дата публикации

ELECTROMAGNETIC SOFT ACTUATORS

Номер: US20200003088A1
Автор: Ebrahimi Nafiseh, Jafari Amir
Принадлежит: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM

In one embodiment, an electromagnetic soft actuator includes a first soft outer member comprising a soft internal electrically conductive coil, a second soft outer member comprising a soft internal electrically conductive coil, and a soft inner shaft on which the first and second soft outer members are mounted, the first and second soft outer members being linearly displaceable along a length of the soft inner shaft, the soft inner shaft comprising a permanent magnet, wherein the first and second outer members linearly move under an electromagnetic force relative to the soft inner shaft and each other when an electric current is applied to the soft internal electrically conductive coils. 1. An electromagnetic soft actuator comprising:a first soft outer member comprising a soft internal electrically conductive coil;a second soft outer member comprising a soft internal electrically conductive coil; anda soft inner shaft on which the first and second soft outer members are mounted, the first and second soft outer members being linearly displaceable along a length of the soft inner shaft, the soft inner shaft comprising a permanent magnet;wherein the first and second outer members linearly move under an electromagnetic force relative to the soft inner shaft and each other when an electric current is applied to the soft internal electrically conductive coils.2. The actuator of claim 1 , wherein the first and second soft outer members are made of a flexible polymeric material that comprises a ferromagnetic material.3. The actuator of claim 1 , wherein the first and second soft outer members are made of polydimethylsiloxane (PDMS) that is impregnated with ferromagnetic powder.4. The actuator of claim 1 , wherein the soft internal electrically conductive coil comprises a continuous microchannel or microtube configured as a multilayer helix that forms the shape of the coil and is filled with an electrically conductive fluid.5. The actuator of claim 1 , wherein the soft ...

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Номер записи: 8
07-01-2021 дата публикации

Hydraulic Drive for Accelerating and Braking Dynamically Moving Components

Номер: US20210003045A1
Автор: Omanovic Andyn, Schneider Wolfgang, Soltic Patrik
Принадлежит:

In order to ensure a simple, reliable and recuperative operation in a hydraulic drive () for accelerating and braking a gas exchange valve () of internal combustion engines or other reciprocating engines, it is proposed that a first pressure reservoir () for providing a first pressure pcomprises a restoring energy accumulator, preferably configured as a spring (), and at least one hydraulic base pressure reservoir (), which has a lower pressure pthan the first pressure reservoir (). In a connecting line () between the first hydraulic pressure reservoir () and the working cylinder (), a controllable opening () of a first valve () comprising at least one check valve () is arranged upstream or downstream in the flow path, which allows the pressure medium () to flow in the direction of working cylinder (), but prevents a backflow towards the pressure reservoir (). 2. The hydraulic drive according to claim 1 , characterized in that in a second connecting line between the first pressure reservoir and the working cylinder there is provided a controllable opening of a second valve comprising at least one claim 1 , preferably spring-loaded check valve claim 1 , which is arranged serially in the flowpath upstream claim 1 , within or downstream claim 1 , preventing a flow in a direction towards the working cylinder claim 1 , but allowing a backflow in a direction towards the pressure reservoir.3. The hydraulic drive according to claim 2 , characterized in that the drive comprises at least a second pressure reservoir with a pressure p claim 2 , and that the controllable opening of the second valve is connected with this second pressure reservoir instead of with the first pressure reservoir claim 2 , wherein the pressure (p) of the second pressure reservoir is preferably between the pressure of the hydraulic base pressure reservoir pand the first pressure pand is preferably chosen so low that the gas exchange valve can reliably swing back onto the valve seat during the closing ...

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Номер записи: 9
07-01-2021 дата публикации

Adaptive any-fuel camless reciprocating engine

Номер: US20210003087A1
Автор: Peter Sinsheimer, Raymond Mitchell Spearrin, Tsu-Chin Tsao
Принадлежит: UNIVERSITY OF CALIFORNIA

An adaptive, any-fuel reciprocating engine using sensor feedback integration of high-speed optical sensors with real-time control loops to adaptively manage the electronic actuation schemes over a range of engine loads and fuels. The engine uses one or more optical sensors to collect specific types of gas property data via a spectroscopic technique to adaptively control various components within the engine.

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Номер записи: 10
07-01-2021 дата публикации

UNLOADER FOR A COMPRESSOR AND SERVICING THEREOF AND COMPRESSOR PROVIDED WITH AN UNLOADER

Номер: US20210003125A1
Автор: DE SCHAMPHELAERE Pieter, MARTENS Kristof Adrien, SMITH Daniel Joseph
Принадлежит: Atlas Copco Airpower, Naamloze Vennootschap

Unloader for a compressor, said unloader () comprising a housing () with an inlet () and an outlet (), and whereby the unloader () is further provided with a piston rod () which is arranged moveably in a reciprocating manner in the housing (), whereby on one end () of the piston rod () a valve () is provided to be able to close the outlet () and whereby on the other end () of the piston rod () a piston () is arranged, the piston being arranged moveably in a reciprocating manner in a thereto provided cavity () of the unloader (), said cavity () being at least partially delimited by a lid () which is provided on the housing () and which is also part of the unloader (), whereby sealing means () are provided for the leakage-free movement of the piston () in said cavity (), whereby the cavity () in which the piston () is arranged moveably in a reciprocating manner is provided at least partially in the lid (). 111-. (canceled)121234152557455891910211189981081110ab. An unloader for a compressor , said unloader () comprising a housing () with an inlet () and an outlet () , and whereby the unloader () is further provided with a piston rod () which is arranged moveably in a reciprocating manner in the housing () , whereby on one end () of the piston rod () a valve () is provided to be able to close the outlet () and whereby on the other end () of the piston rod () a piston () is arranged , the piston being arranged moveably in a reciprocating manner in a thereto provided cavity () of the unloader () , said cavity () being at least partially delimited by a lid () which is provided on the housing () and which is also part of the unloader () , whereby sealing means () are provided for the leakage-free movement of the piston () in said cavity () , wherein the cavity () in which the piston () is arranged moveably in a reciprocating manner is completely located or integrated in the lid () , and the piston () and the sealing means () are freely accessible when the lid () is removed. ...

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Номер записи: 11
11-01-2018 дата публикации

Internal Combustion Engine Gas Exchange Valve Hydraulic Actuator

Номер: US20180010490A1
Автор: TOTEV Lachezar
Принадлежит:

The invention relates to an internal combustion engine gas exchange valve actuator and is used to displace one or more internal combustion engine valves thereby improving the operation and extending the capabilities of the engine. The actuator includes a casing () attached to the engine head () and with a hollow cylinder () formed inside it and containing a reciprocating piston () with a piston rod. Provision is made in the casing () which is closed by a cap (), for a loop for controlled charging and discharging of the pressurized fluid and for a solenoid valve with direct electromagnetic control. The solenoid valve is positioned above the piston () and is formed as a plunger () having a lower cylindrical widening with axial orifices () and an upper part with a central recess () and radial orifices () and (). 1. An internal combustion engine gas exchange valve actuator comprising:{'b': 6', '3', '8', '9', '3', '8', '9', '8', '8', '9', '10', '9', '12', '13', '8', '9', '10', '13', '6', '2', '18', '3', '5, 'a casing attached to the engine cylinder head and shaped internally as a hollow cylinder which is opened at the bottom and hosts an axially reciprocating piston rigidly connected to a piston rod, which form the driving part of the actuator, with a circuit being provided for in the casing for controlled charging and discharging of pressurized fluid acting upon the actuator piston and ensuring its movement, and the charging and discharging of the fluid is ensured by a directly controlled solenoid valve, and a space of one hydraulic braking device is shaped in the upper part of the actuator and coaxial to the hollow cylinder, characterized in that the reciprocating piston () placed in the lower part of the hollow cylinder () represents a hollow cylinder unilaterally open at the top and having in its inner part a primary brake cylinder () and a secondary brake cylinder () which are coaxially nested in each other and are axially reciprocating relative to the hollow ...

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Номер записи: 12
19-01-2017 дата публикации

Internal Combustion Engine with Integrated Air Compressor

Номер: US20170016387A1
Автор: CANNATA Antonio
Принадлежит:

A piston-cylinder arrangement for an internal combustion engine includes a first cylinder bore in an engine with a first piston disposed therein. A combustion chamber may be positioned between walls of the first cylinder bore and the first piston. A second cylinder bore in the engine block may be aligned with the first cylinder bore with a second piston disposed therein. A compression chamber may be positioned between walls of the second cylinder bore and the second piston. One or more supporting members may connect the first piston to the second piston for facilitating concurrent reciprocation of the first piston and the second piston within their respective cylinder bores during operation of the internal combustion engine. The first piston, the second piston, and the one or more supporting members may define a stacked piston arrangement. 1. A piston-cylinder arrangement for an internal combustion engine , the arrangement comprising:a first cylinder bore in an engine block, the first cylinder bore having an axis extending along a length of the first cylinder bore;a first piston positioned within the first cylinder bore for reciprocation along the axis;a combustion chamber positioned between walls of the first cylinder bore and the first piston;an inlet for directing intake contents into the combustion chamber;an outlet for directing exhaust contents of the combustion chamber out of the combustion chamber;a second cylinder bore in the engine block, the second cylinder bore aligned with the first cylinder bore along the axis;a second piston positioned within the second cylinder bore for reciprocation along the axis;a compression chamber positioned between walls of the second cylinder bore and the second piston;one or more ports in the engine block for directing air into and out of the compression chamber; andone or more supporting members connecting the first piston to the second piston, the one or more supporting members positioning the first piston and the second ...

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Номер записи: 13
21-01-2016 дата публикации

Bias mechanisms for a rocker arm and lost motion component of a valve bridge

Номер: US20160017765A1
Автор: G. Michael GRON, Justin Baltrucki
Принадлежит: Jacobs Vehicle Systems Inc

Systems for actuating at least two engine comprise a valve bridge operatively connected to the at least two engine valves and having a hydraulically-actuated lost motion component. A rocker arm has a motion receiving end configured to receive valve actuation motions from a valve actuation motion source and a motion imparting end for conveying the valve actuation motions and hydraulic fluid to the lost motion component. The motion receiving end is biased toward the valve actuation motion source. A bias mechanism, supported by either the rocker arm, valve bridge or both, is configured to bias the motion receiving end of the rocker arm and the lost motion component into contact with each other. By maintaining such contact, the bias mechanism helps maintain the supply of hydraulic fluid from the rocker arm to the lost motion component.

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Номер записи: 14
21-01-2016 дата публикации

SYSTEM COMPRISING AN ACCUMULATOR UPSTREAM OF A LOST MOTION COMPONENT IN A VALVE BRIDGE

Номер: US20160017773A1
Автор: BALTRUCKI Justin, GRON G. Michael, Lu Biao
Принадлежит:

Systems for actuating at least two engine valves comprise a valve bridge operatively connected to the at least two engine valves and having a hydraulically-actuated lost motion component. The lost motion component comprises a lost motion check valve disposed therein. A rocker arm has a motion receiving end configured to receive valve actuation motions from a valve actuation motion source and a motion imparting end for conveying the valve actuation motions and hydraulic fluid to the lost motion component. The rocker arm is in fluid communication with a hydraulic fluid supply. The systems also comprise an accumulator in fluid communication with the hydraulic fluid supply and disposed upstream of the lost motion check valve. In all embodiments, a fluid supply check valve may be disposed upstream of the accumulator and configured to prevent flow of hydraulic fluid from the accumulator back to the hydraulic fluid supply.

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Номер записи: 15
21-01-2016 дата публикации

Oil Control Valve System For Valve Actuation Switching

Номер: US20160017774A1
Автор: Zurface Austin Robert
Принадлежит:

An oil control valve system according to one example of the present disclosure incorporates a common or interchangeable oil control valve at distinct locations of an engine to direct operation of switching mechanisms over sets of three cylinders. In another aspect of the present disclosure, four interchangeable oil control valves are used in a six-cylinder engine. Utilizing interchangeable oil control valves minimizes design costs, reduces assembly time, lessens repair or replacement burdens, and allows for enhanced engine performance.

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Номер записи: 16
18-01-2018 дата публикации

Electromagnetic Actuator Having Clamping-Free Tappets

Номер: US20180016949A1
Автор: Burkart Harald, Maiwald Wolfram, Marull-Kessler Pedro, Schuetz Martin, SUZUKI Tsuneo, Tischtschenko Michael
Принадлежит:

The invention is an actuator device comprising a first and a second tappet, wherein the first tappet is movably arranged in a first guide sleeve and the second tappet is movably arranged in a second guide sleeve, wherein the first tappet in the first guide sleeve is surrounded by a first restoring spring and the second tappet in the second guide sleeve is surrounded by a second restoring spring, and wherein the guide sleeves are arranged at a fixed distance from each other, wherein the first restoring spring is a coil spring wound in the left-hand direction and the second restoring spring is a coil spring wound in the right-hand direction. 1. An actuator device comprising a first tappet and a second tappet , with the first tappet being arranged in a displaceable fashion in a first guide sleeve and the second tappet in a second guide sleeve , with the first tappet being surrounded at least sectionally along its longitudinal axis by a first return spring and the second tappet at least sectionally along its longitudinal axis by a second return spring , and with the two guide sleeves being arranged at a fixed distance from each other , wherein the first return spring represents a coil spring wound in the left direction and the second return spring represents a coil spring wound in the right direction.2. The actuator device according to claim 1 , wherein the coil springs are embodied as springs made from a fiberglass-reinforced synthetic material.3. The actuator device according to claim 1 , wherein the coil springs comprise at each of their ends respectively at least two end windings abutting each other.4. The actuator device according to claim 3 , wherein the coil spring wound in the left direction or the coil spring wound in the right direction comprise at least at one of their two ends three end windings abutting each other.5. The actuator device according to claim 3 , wherein at least one end of each coil spring is embodied in an enhanced fashion.6. The actuator ...

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Номер записи: 17
21-01-2021 дата публикации

VALVE OPENING-CLOSING TIMING CONTROL APPARATUS

Номер: US20210017886A1
Автор: Ikeda Kenji, KOIDE Kenta, MUKAIDE Hiroki, OTAKE Tomoharu, Sano Hajime
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

An Oldham coupling includes an engagement arm. At least either a driving-side rotor or an input gear has an engagement portion engaged with the engagement arm and is connected to the Oldham coupling. The engagement arm has a pair of arm flat surface portions perpendicular to a rotational direction of the driving-side rotor. The engagement portion has a pair of engagement flat surface portions that the arm flat surface portions face in a sliding contact manner. Each arm flat surface portion is, within a range where the arm flat surface portion slides against a facing engagement flat surface portion, always in contact with an overlapping portion of the engagement flat surface portion with the arm flat surface portion when viewed from a direction perpendicular to a sliding direction of the Oldham coupling and in which the arm flat surface portion and the engagement flat surface portion overlap each other. 1. A valve opening-closing timing control apparatus comprising:a driving-side rotor that rotates about a rotation axis synchronously with a crankshaft of an internal-combustion engine;a driven-side rotor that is arranged on an inner side of the driving-side rotor coaxially with the rotation axis and rotates integrally with a camshaft for valve opening and closing of the internal-combustion engine; anda phase adjustment mechanism that sets a relative rotation phase between the driving-side rotor and the driven-side rotor, by using drive force of an electric actuator, whereinthe phase adjustment mechanism includes an output gear disposed on the driven-side rotor coaxially with the rotation axis, an input gear rotating about an eccentric axis in an orientation parallel with the rotation axis, having a number of teeth less than the output gear, being arranged coaxially with the eccentric axis, and being connected to the driving-side rotor via an Oldham coupling, and a cylindrically shaped eccentric member supporting, on an inner side of the input gear, the input gear in ...

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Номер записи: 18
16-01-2020 дата публикации

LINEAR ACTUATOR FOR VALVE CONTROL AND OPERATING SYSTEMS AND METHODS

Номер: US20200020472A1
Автор: Edrington Christopher S., Gonsoulin David, Perkins Dallas, Vahedi Hesan
Принадлежит:

Linear actuators are disclosed. The linear actuator comprises a thruster and a stator. The thruster includes a thruster winding, and the stator includes a stator winding. The stator is disposed about the thruster. The linear actuator also includes a sheath disposed about the stator and the thruster. The thruster is configured to translate within the sheath relative to the stator upon application of an electrical current to the stator winding, the thruster winding, or a combination thereof. The stator winding and the thruster winding each comprise a nonpermanent magnet. 1. A linear actuator , comprising:a thruster comprising a thruster winding;a stator disposed about the thruster, wherein the stator comprises a stator winding, wherein the stator comprises a first portion and a second portion spaced apart from each other, and wherein the stator winding comprises a first stator winding disposed within the first portion of the stator and a second stator winding disposed within the second portion of the stator; anda sheath disposed about the stator and the thruster,wherein the thruster is configured to translate within the sheath relative to the stator upon application of an electrical current to the stator winding, the thruster winding, or a combination thereof, andwherein the stator winding and the thruster winding each comprise a nonpermanent magnet.2. The linear actuator of claim 1 , wherein the first portion of the stator comprises a first stator connection and the second portion of the stator comprises a second stator connection.3. The linear actuator of claim 1 , wherein the thruster comprises a thruster disk attached thereto claim 1 , wherein the thruster disk is disposed between the first portion of the stator and the second portion of the stator.4. The linear actuator of claim 1 , wherein the thruster winding is disposed within the thruster disk.5. The linear actuator of claim 4 , wherein the thruster disk comprises a thruster connection.6. The linear actuator ...

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Номер записи: 19
28-01-2016 дата публикации

SYSTEM AND METHOD FOR SAFE VALVE ACTIVATION IN A DYNAMIC SKIP FIRING ENGINE

Номер: US20160024981A1
Автор: CHEN Shikui Kevin, PARSELS John W., YOUNKINS Matthew A.
Принадлежит:

A variety of methods and devices for controlling the operation of the intake and exhaust valves in an internal combustion engine during skip fire operation are described. In various embodiments, an exhaust valve monitor or other suitable mechanism is used to detect exhaust valve actuation faults. When an exhaust valve actuation fault is detected for a particular cylinder, the corresponding intake valve is deactivated (or not activated) in circumstances when it would otherwise be activated in order to prevent the intake valve from opening into a cylinder that contains high pressure combustion gases. The described approach is particularly beneficial when skip fire operation is combined with cylinder deactivation so that air is not pumped through the cylinders during the skipped working cycles. 1. An internal combustion engine comprising:an engine controller arranged to operate the engine in a skip fire mode;at least one selectively activatable cylinder, each selectively activatable cylinder having an associated intake valve and an associated exhaust valve, wherein the exhaust valve associated with each selectively activatable cylinder can be selectively opened or held closed during a selected working cycle to help facilitate deactivating the cylinder during skipped working cycles that occur during skip fire operation of the engine such that air is not pumped through the cylinder during the skipped working cycles; anda valve control system arranged to ensure that during skip fire operation, the intake valve does not open when the selectively activatable cylinder contains high pressure combustion gases, the valve control system including an exhaust valve motion verification module arranged to detect opening of the exhaust valve to vent combustion gases.2. An engine as recited in wherein the valve control system is arranged to activate the intake valve only after the exhaust valve motion verification module has detected the opening of the exhaust valve.3. An engine as ...

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Номер записи: 20
26-01-2017 дата публикации

INTERNAL COMBUSTION ENGINE

Номер: US20170022856A1
Автор: Hara Hiroki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An internal combustion engine includes an intake camshaft, a vacuum pump, an oil pump, and an oil feeding passage serving as an oil supplying path. The vacuum pump includes a rotor and a housing. The vacuum pump is formed with a negative pressure chamber that generates a negative pressure, and an oil path connected to the negative pressure chamber. An atmosphere communication hole for supplying air to the negative pressure chamber through the oil feeding passage and the oil path when the vacuum pump is stopped is arranged in the oil feeding passage. The atmosphere communication hole communicates the negative pressure chamber and the atmosphere before an amount of oil in the housing exceeds an allowable oil amount when the vacuum pump is stopped. 1. An internal combustion engine comprising:a camshaft;a vacuum pump including a rotor and a housing that accommodates the rotor, the rotor being coupled to the camshaft to integrally rotate with the camshaft, the housing rotatably supporting the rotor, the vacuum pump interiorly including a negative pressure chamber defined by the rotor and the housing and an oil path connected to the negative pressure chamber, and a negative pressure being generated in the negative pressure chamber by rotation of the rotor;an oil pump; andan oil supplying path that is connected to the oil pump, and that supplies oil to the oil path; whereinthe oil supplying path includes an atmosphere communication hole that supplies air to the negative pressure chamber through the oil supplying path and the oil path when the vacuum pump is stopped; andthe atmosphere communication hole communicates the negative pressure chamber and the atmosphere before an amount of oil in the housing exceeds an allowable oil amount when the vacuum pump is stopped.2. The internal combustion engine according to claim 1 , whereinthe oil supplying path includes a merging path connected to the oil path, and a plurality of branched paths branched and extended from the merging ...

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Номер записи: 21
24-01-2019 дата публикации

METERING PLATE FOR REDUCTION IN DISCHARGE COEFFICIENT VARIATION BETWEEN GASEOUS FUEL INJECTORS

Номер: US20190024541A1
Автор: DeHerrera Steven A., Farrow Timothy J., Kifer Roger M., Pedley Jerrod C.
Принадлежит: WOODWARD, INC.

Provided is a metering plate for a poppet-style valve in which the metering plate includes a peripheral edge structure that reduces the impact of edge variation as a result of typical manufacturing tolerances. The peripheral edge structure is located at the sealing surface and extends from the peripheral surface of the metering plate so as to avoid a sharp edge at the outer diameter of the metering plate. In embodiments, the peripheral edge structure is a chamfered surface or a curved surface. Small dimensional deviations from these surfaces resulting from typical manufacturing tolerances do not have a significant effect on the discharge coefficient of the metering plate. In this way, the discharge coefficients of poppet-style valves across a fluid admission system are contained in a much tighter range, thereby enhancing the efficiency of and control over the fluid admission system. 1. A metering plate for a poppet-style valve , the metering plate comprising:a fluid-directing body, the fluid-directing body defining a first surface and at least one peripheral surface substantially perpendicular to the first surface; andat least one peripheral edge structure located proximal to the first surface, the at least one peripheral edge structure extending between the first surface and the at least one peripheral surface;wherein each of the at least one peripheral edge structure includes a transition surface, the transition surface extending at least a portion of the at least one peripheral edge structure between the first surface and the at least one peripheral surface.2. The metering plate of claim 1 , wherein the at least one peripheral edge structure further comprises an edge face claim 1 , the edge face defining a furthest peripheral extent of the metering plate claim 1 , and wherein the transition surface extends between the first surface and the edge face.3. The metering plate of claim 2 , wherein the fluid directing body is a generally cylindrical disc such that the ...

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Номер записи: 22
24-04-2014 дата публикации

PRIMARY AND AUXILIARY ROCKER ARM ASSEMBLY FOR ENGINE VALVE ACTUATION

Номер: US20140109848A1
Автор: JANAK Robb, Meistrick Zdenek S., Ruggiero Brian
Принадлежит:

Systems and methods for actuating engine valves are disclosed. The systems may include primary and auxiliary rocker arms disposed adjacent to each other on a rocker arm shaft. The primary rocker arm may actuate engine valves for primary valve actuation motions, such as main exhaust events, in response to an input from a first valve train element, such as a cam. The auxiliary rocker arm may receive one or more auxiliary valve actuation motions, such as for engine braking, exhaust gas recirculation, and/or brake gas recirculation events, from a second valve train element to actuate one of the engine valves. Master and slave pistons may be provided in the primary rocker arm. The master piston may be actuated by the auxiliary rocker arm. 1. A system for actuating first and second engine valves associated with the same engine cylinder , comprising:a rocker arm shaft;a means for imparting primary valve actuation motion;a primary rocker arm disposed on the rocker arm shaft, said primary rocker arm being adapted to actuate the first and second engine valves and receive motion from the means for imparting primary valve actuation motion;a means for imparting auxiliary valve actuation motion;an auxiliary rocker arm disposed adjacent to the primary rocker arm, said auxiliary rocker arm being adapted to receive motion from the means for imparting auxiliary valve actuation motion;a master piston disposed in a master piston bore in the primary rocker arm;a slave piston disposed in a slave piston bore in the primary rocker arm, said slave piston positioned so as to provide auxiliary valve actuation motion to only the first of the first and second engine valves;a control valve disposed in a control valve bore in the primary rocker arm; anda hydraulic circuit connecting the master piston bore, the slave piston bore and the control valve bore.2. The system of further comprising:a sliding pin disposed between the slave piston and the first engine valve,wherein the auxiliary valve ...

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Номер записи: 23
02-02-2017 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20170030351A1
Автор: Saga Koji
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement pump includes: a control mechanism arranged to be actuated based on a hydraulic pressure introduced into the introduction passage before the eccentric amount is minimized, and arranged to introduce the hydraulic pressure through a throttling to the second control hydraulic chamber when the hydraulic pressure introduced from the introduction passage is equal to or smaller than a predetermined pressure, and to discharge the hydraulic fluid within the second control hydraulic chamber in accordance with the hydraulic pressure when the hydraulic pressure introduced from the introduction passage becomes greater than the predetermined pressure; and a switching mechanism arranged to switch between a state in which the hydraulic fluid introduced into the introduction passage is introduced to the control mechanism, and a state in which the hydraulic fluid introduced into the introduction passage is discharged from the control mechanism. 1. A variable displacement pump comprising:a housing including a pump receiving chamber formed therein;a pump mechanism including a rotor rotationally driven, a plurality of vanes provided on an outer circumference side of the rotor to be projectable from and retractable into the rotor, and a movable member receiving the rotor and the plurality of the vanes therein to form a plurality of hydraulic fluid chambers for sucking and discharging the hydraulic fluid in accordance with the rotation of the rotor, the movable member being arranged to be moved within the pump receiving chamber so as to vary an eccentric amount of a center of an inner circumference of the movable member with respect to a center of the rotation of the rotor;an urging member provided within the housing to have a set load, and arranged to urge the movable member in a direction in which the eccentric amount of the center of the inner circumference of the movable member with respect to the center of the rotation of the rotor is increased;a first control ...

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Номер записи: 24
04-02-2016 дата публикации

Internal combustion engine with a camshaft phaser

Номер: US20160032790A1
Автор: PASCAL DAVID, Pierre Kimus, Sebastien Mafrica
Принадлежит: Delphi Technologies Inc

An internal combustion engine includes a crankshaft rotatable about a crankshaft axis; a camshaft rotatable by the crankshaft about a camshaft axis; an engine cover defining an engine cover volume within the internal combustion engine; a drive member disposed within the engine cover volume which transfers rotational motion from the crankshaft to the camshaft; a camshaft phaser disposed within the engine cover volume which controllably varies the phase relationship between the crankshaft and the camshaft; an actuator which operates the camshaft phaser; and an actuator mount within the engine cover volume which mounts the actuator structurally independent of the engine cover, thereby allowing removal of the engine cover independently of the actuator.

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Номер записи: 25
04-02-2016 дата публикации

Valve Timing Control Device for Internal Combustion Engine

Номер: US20160032795A1
Автор: KAJIURA Mikihiro, SUZUKI Akinori, YAHAGI Yasuo
Принадлежит:

The present invention provides a valve timing control device that can suppress a leakage of noise to the outside of the device and can improve reliability without needlessly increasing the volume occupied by the device. There is provided a valve timing control device for an internal combustion engine, including a driving rotary body to which rotational force from a crankshaft is transmitted, a driven rotary body, an intermediate rotary body, a speed reduction mechanism, an electric motor, and a housing, wherein: the electric motor rotates relative to the camshaft and the housing; the valve timing control device further includes a current application switching mechanism which is provided inside the housing and which includes brushes to switch current application to a coil of the electric motor, and feeding mechanisms which are provided between the housing and an external device and which include brushes to apply a current from the external device to the current application switching mechanism; electromagnetic noise emission suppression means is provided on the power supply side of the brushes of the feeding mechanisms; and the brushes of these mechanisms are disposed apart from the rotational axis of the camshaft by substantially the same distance. 1. A valve timing control device for an internal combustion engine , comprising:a driving rotary body to which rotational force from a crankshaft of the internal combustion engine is transmitted;a driven rotary body to which the rotational force is transmitted from the driving rotary body and which is fixed to a camshaft;an intermediate rotary body which is supported by the driven rotary body through a bearing mechanism having at least a ball bearing and which is rotatably provided relative to the driving rotary body;a speed reduction mechanism which reduces the rotational speed of the intermediate rotary body to be transmitted to the driven rotary body by rotating the intermediate rotary body relative to the driving ...

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Номер записи: 26
11-02-2016 дата публикации

ACTUATOR FOR AXIAL DISPLACEMENT OF AN OBJECT

Номер: US20160040564A1
Автор: Höglund Anders
Принадлежит:

An actuator for axial displacement of an object, includes an actuator piston and an actuator piston rod, wherein the piston is displaceable in the axial direction, and a hydraulic circuit including a liquid filled chamber, a first end of the actuator piston rod being displaceable in the axial direction within the liquid filled chamber, wherein an axially extending recess mouth in the liquid filled chamber is arranged to receive the first end. The actuator piston rod in the area of the first end presents a cylindrical envelope surface, and the recess presents a cylindrical inner surface having a matching shape, wherein the actuator includes a passage extending between the recess and liquid filled chamber when the cylindrical envelope surface and the cylindrical inner surface are located in overlapping configuration, wherein the passage presents at a braking overlap section a cross section area that decreases as a function of increasing overlap. 235. The actuator according to claim 1 , wherein said beginning of the braking overlap section () represent at least 30% of the maximum overlap.335. The actuator according to claim 1 , wherein said end of the braking overlap section () represent at least 10% of the maximum overlap.4353536362425. The actuator according to claim 1 , wherein the predetermined maximum overlap claim 1 , in addition to said braking overlap section () and adjacent an end of the braking overlap section () claim 1 , comprises a seating overlap section () claim 1 , the passage presenting at said seating overlap section () a cross section area (A) that is constant as a function of increasing overlap between the cylindrical envelope surface () and the cylindrical inner surface ().536. The actuator according to claim 4 , wherein said seating overlap section () represent less than 20% of the maximum overlap.6. The actuator according to claim 1 , wherein the axial length of the maximum overlap is greater than 1 mm claim 1 , and less than 5 mm claim 1 , ...

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Номер записи: 27
09-02-2017 дата публикации

COMBUSTION ENGINE WITH PNEUMATIC VALVE RETURN SPRING

Номер: US20170037750A1
Автор: CARLSON Urban, Höglund Anders, IVARSSON Lars, KOENIGSEGG Christian
Принадлежит:

A combustion engine includes an engine valve arranged to selectively open/close a combustion chamber of the engine, a cylinder head adjacent the combustion chamber, arranged to guide a valve stem of the engine valve, the engine valve being axially displaceable relative to the cylinder head between the combustion chamber closed position and the combustion chamber fully opened position, and a valve spring retainer connected to the valve stem. The valve spring retainer partly delimits a gas spring volume, which is in fluid communication with an adjacent gas volume via a port when the engine valve is in the combustion chamber closed position, and which is separated from the adjacent gas volume when the engine valve is in the combustion chamber fully open position, the port being open during at least 25% of the maximal stroke of the engine valve and being closed due to a displacement of the engine valve. 250845. The combustion engine according to claim 1 , wherein said port () is open during at least 35 percentage of the maximal stroke of the engine valve () claim 1 , preferably at least percentages.3508. The combustion engine according to claim 1 , wherein said port () is open during a maximum of 70 percentage of the maximal stroke of the engine valve () claim 1 , preferably a maximum of 60 percentages.4373883946394746473737473748. The combustion engine according to claim 1 , wherein the cylinder head comprises a lead through () claim 1 , which is arranged to guide the valve stem () of the engine valve () claim 1 , said valve spring retainer () and a cylinder shaped sleeve () that extends from the valve spring retainer () forming a valve spring cover () claim 1 , the cylinder shaped sleeve () of the valve spring cover () being telescopically displaceable in relation to said lead through () claim 1 , radially outside the lead through () claim 1 , and the valve spring over () and the lead through () delimiting said gas spring volume ().5464750484987. The combustion engine ...

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Номер записи: 28
07-02-2019 дата публикации

Combustion Chamber Arrangement and System Comprising Said Arrangement

Номер: US20190040792A1
Автор: Erämaa Timo
Принадлежит: Finno Energy Oy

An object of the present invention is to provide a method and a system for implementing the method so as to alleviate the disadvantages of a reciprocating combustion engine and gas turbine when generating power. The invention is based on the idea of arranging a multifunction valve inside a combustion chamber to create more favourable favorable conditions for combustion process. The multifunction valve may act as an output valve, but it can also provide additional final compression to contents of the compression chamber and it may even capture part of energy released in a combustion process. 1. A combustion chamber arrangement comprising a combustion chamber for combusting fuel , an air input valve arranged to control an input for supplying air , a controllable input for supplying fuel to the combustion chamber , and an output for expelling combustion products from the combustion chamber , the combustion chamber being formed of a hollow container having a center axis , a first axial end portion and an opposite second axial end portion , wherein{'b': '70', 'the air and the fuel are supplied to the first axial end portion (A) of the combustion chamber,'}the output is positioned in the second axial end portion of the combustion chamber, andthe arrangement further comprises a multifunction valve axially movable within the combustion chamber, the multifunction valve comprising a valve disc and a stem mounted on the valve disc and protruding out from the second axial end portion of the combustion chamber, whereby the valve disc divides the interior of the combustion chamber into two chamber portions at each axial side of the valve disc, the first chamber portion formed between the valve disc and the first axial end portion of the combustion chamber forming a variable volume combustion chamber opening into the output when the valve disc moves towards the second axial end portion of the combustion chamber, wherein the multifunction valve comprises at least one duct having an ...

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Номер записи: 29
06-02-2020 дата публикации

VALVE TIMING ADJUSTING DEVICE

Номер: US20200040778A1
Автор: Iwasaki Akira, KINOUCHI Soichi
Принадлежит:

A driving rotor is rotational about a rotational shaft center in conjunction with a crankshaft. A driven rotor is rotational about the rotational shaft center in conjunction with the camshaft. A deceleration mechanism is configured to change a relative rotational phase between the driving rotor and the driven rotor by using a driving force of an electric motor. The deceleration mechanism includes an internal gear portion, which includes an internal tooth formed inward in a radial direction, and an external gear portion, which includes an external tooth formed outward in a radial direction and engages with the internal tooth. A linear expansion coefficient of the external gear portion is larger than a linear expansion coefficient of the internal gear portion. 1. A valve timing adjusting device configured to adjust valve timing of a valve , which is configured to be opened and closed by a camshaft on application of engine torque transmitted from a crankshaft in an internal combustion engine , the valve timing adjusting device comprising:a driving rotor rotational about a rotational shaft center in conjunction with the crankshaft;a driven rotor rotational about the rotational shaft center in conjunction with the camshaft; anda deceleration mechanism configured to change a relative rotational phase between the driving rotor and the driven rotor by using a driving force of an electric motor, whereinthe deceleration mechanism includes at least one pair of gear portions including:an internal gear portion having an internal tooth formed inward in a radial direction; andan external gear portion having an external tooth that is formed outward in a radial direction and engages with the internal tooth, whereina linear expansion coefficient of the external gear portion is larger than a linear expansion coefficient of the internal gear portion.2. The valve timing adjusting device according to claim 1 , whereinthe internal gear portion is provided for one of the driving rotor and ...

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Номер записи: 30
18-02-2021 дата публикации

ELECTROMAGNETIC LATCH ASSEMBLY WITH FLEXIBLE LATCH PIN COUPLING

Номер: US20210047948A1
Автор: STRETCH Dale Arden, VanDeusen Brian Karl, Zurface Austin Robert
Принадлежит:

In an electromagnetic latch assembly of a type that includes an armature, an electromagnet operative to actuate the armature, a latch pin, and a rigid metal structure that supports both the electromagnet and the latch pin, the latch pin is attached to the armature through a bendable connection. The electromagnet may be mounted to or housed within the metal structure. The latch pin may protrude from the rigid metal structure and may be guided by the metal structure. The bendable connection couples translation of the armature to translation of the latch pin while allowing the two parts to move independently to some degree. The bendable connection may reduce forces on the armature that could cause the armature to bend or stick. Those forces may result from misalignment between the latch pin and the armature or from the latch pin being driven off axis under load. 1. An electromagnetic latch assembly , comprising:an armature;an electromagnet operative to actuate the armature from a first position to a second position;a latch pin; anda rigid metal structure that supports both the electromagnet and the latch pinwherein the latch pin is attached to the armature through a bendable connection.2. The electromagnetic latch assembly of claim 1 , wherein the rigid metal structure has a bore that guides the latch pin.3. The electromagnetic latch assembly of claim 1 , wherein a diameter of the armature is less than a diameter of the latch pin.4. The electromagnetic latch assembly of claim 1 , wherein the electromagnet is housed within the rigid metal structure.5. The electromagnetic latch assembly of claim 4 , further comprising:a plate adjacent an end of the electromagnet opposite the latch pin;wherein the armature is supported by the plate.6. The electromagnetic latch assembly of claim 1 , wherein the bendable connection limits relative movement between the latch pin and the armature to bending in one direction.7. The electromagnetic latch assembly of claim 6 , wherein the latch ...

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Номер записи: 31
14-02-2019 дата публикации

VARIABLE VALVE LIFT ACTUATOR OF ENGINE

Номер: US20190048761A1
Автор: HWANG Soo Hyun, JEON Wan Jae, Lee Dong Hyeong, PARK Chan Wung, PARK Jong Wung, PARK Jun Min
Принадлежит:

Provided is a variable valve lift actuator of an engine, which includes: a first body rotating; a second body; a driving module; and a return spring, wherein an entire portion or a partial front end of the driving module is inserted into a rear end of the second body, the lift degree of the valve is variably controlled in two stages of a high-speed mode and a low-speed mode based on an operating condition of the engine, and when only the high-speed cam is installed on the camshaft, the driving pin is operated in a low-speed and low-load state of the engine to separate the first body from the second body so as to deactivate a cylinder. 1. A variable valve lift actuator of an engine , the variable valve lift actuator comprising:first body rotating in a predetermined angular range according to a rotational motion of a high-speed cam coupled to a camshaft;a second body connected to or disconnected from the first body, rotated according to the rotational motion of the high-speed cam when connected with the first body, and rotated according to a rotational motion of low-speed cams provided on both sides of the high-speed cam when disconnected with the first body, thereby adjusting a lift degree of the valve;a driving module for operating a driving pin such that the driving pin protrudes toward or retracts from a front of the first body so as to connect or disconnect the first body to or from the second body;a rotary shaft disposed on an upper portion of the valve while crossing both side walls of the first and second bodies to enable the rotational motion of the first body; anda return spring installed around the rotary shaft to provide restoring force so as to return the first body rotated by the high-speed cam to an original position,wherein the lift degree of the valve is variably controlled in two stages of a high-speed mode and a low-speed mode based on an operating condition of the engine, when only the high-speed cam is installed on the camshaft, a pause control ...

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Номер записи: 32
13-02-2020 дата публикации

SYSTEMS AND METHODS FOR IN-CYLINDER FUEL DOSING FOR EXHAUST AFTERTREATMENT SYSTEM THERMAL MANAGEMENT

Номер: US20200049084A1
Автор: HENDERSON Foy C., HOEHNE John L., LINEN E. Nathan, MAHADEVAN Boopathi S., MAHATO Chandan, MISHRA Shounak
Принадлежит: Cummins Inc.

An apparatus comprises a first circuit and a second circuit. The first circuit is structured to determine that a combustion cylinder is operating in a transition period between an exhaust stroke and an intake stroke of the combustion cylinder. The second circuit is structured to provide an injection command during the transition period to a fuel injector associated with the combustion cylinder, the injection command being to inject fuel into a combustion chamber of the combustion cylinder such that at least a portion of the fuel escapes from the combustion chamber through an exhaust port of the combustion cylinder. 1. An apparatus , comprising:a first circuit structured to determine when a combustion cylinder is operating in a transition period between an exhaust stroke and an intake stroke of the combustion cylinder; anda second circuit structured to provide an injection command during the transition period to a fuel injector associated with the combustion cylinder, the injection command being to inject fuel into a combustion chamber of the combustion cylinder such that at least a portion of the fuel escapes from the combustion chamber through an exhaust port of the combustion cylinder.2. The apparatus of claim 1 , wherein an exhaust valve associated with the combustion cylinder is in an open position during the transition period between the exhaust stroke and the intake stroke.3. The apparatus of claim 2 , further comprising a valve circuit structured to selectively actuate the exhaust valve between the open position and a closed position claim 2 ,4. The apparatus of claim 2 , wherein the exhaust valve is actuated between the open position and a closed position by a camshaft of the engine.5. The apparatus of claim 1 , wherein the transition period between the exhaust stroke and the intake stroke is within a range of crank angles of a piston of the combustion cylinder between a first crank angle of about 270 degrees after top-dead-center (ATDC) of the exhaust ...

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Номер записи: 33
03-03-2016 дата публикации

VALVE TIMING CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

Номер: US20160061066A1
Автор: IWASE Yosuke, KAJIURA Mikihiro
Принадлежит: Hitachi Automotive Systems, Ltd.

A valve timing control device of internal combustion engine comprises a chain case that is fixed to a cylinder head of the engine and has a circular opening for receiving therein a cylindrical housing of an electric motor , an annular seal member that is operatively received in an annular clearance defined between an outer cylindrical wall of the cylindrical housing and an inner cylindrical wall of the circular opening , and a cover member that is connected to the chain case to cover the circular opening thereby concealing the annular seal member from the outside, wherein when the cover member is removed from the chain case , the annular seal member becomes exposed to the outside through the circular opening of the chain case for a visual inspection of the annular seal member. 1. A valve timing control device of an internal combustion engine , comprising:first and second rotational members;a phase varying mechanism that varies a rotation phase of the second rotational member relative to the first rotational member;an electric motor mounted to the first rotational member;a speed reduction mechanism through which rotation of an output shaft of the electric motor is transmitted to the second rotational member while reducing the speed of the rotation;a cover member covering at least a part of the electric motor and fixed to a given element of the engine, the given element being either one of a cylinder head of the engine and a chain case; andan annular seal member sealing an annular clearance between an outer cylindrical wall of the electric motor and the given element, the annular seal member being concealed by the cover member when the cover member is fixed to the given element;wherein the cover member is constructed and arranged to cause the annular seal member to be exposed to the outside for a visual inspection of the annular seal member when the cover member is removed from the given element.2. A valve timing control device of an internal combustion engine as ...

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Номер записи: 34
01-03-2018 дата публикации

ELEVATED COMPRESSION RATIO INTERNAL COMBUSTION ENGINE WITH MULTI-STAGE BOOSTING

Номер: US20180058343A1
Автор: Cleary David J., HE Yongsheng, LIU Jim, Najt Paul M., Sun David, ZHU Bin
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

An internal combustion engine includes a cylinder block that defines a cylinder and a cylinder head mounted to the cylinder block. A reciprocating piston is arranged inside the cylinder for compressing an air and fuel mixture at a geometric compression ratio of at least 10:1. A crankshaft is arranged in the cylinder block and rotated by the piston. An intake valve is operatively connected to the cylinder head and controls delivery of air to the cylinder for combustion therein. A mechanism provides a constant peak lift of the intake valve over an angle of rotation of the crankshaft that is at least 5 degrees, i.e., an extended dwell at peak lift. A multi-stage boosting system having first and second gas compressors is selectively controlled to pressurize air that is received from the ambient for delivery to the cylinder. A vehicle having such an engine is also disclosed. 1. An internal combustion engine comprising:a cylinder block defining a cylinder;a cylinder head mounted to the cylinder block;a reciprocating piston arranged inside the cylinder and configured to compress an air and fuel mixture at a geometric compression ratio of at least 10:1;a crankshaft arranged in the cylinder block and rotated by an application of combustion force on the piston;an intake valve operatively connected to the cylinder head;an exhaust valve operatively connected to the cylinder head and configured to control removal of post-combustion gas from the cylinder;a mechanism configured to provide a constant peak lift of the intake valve over an angle of rotation of the crankshaft that is at least 5 degrees; anda multi-stage boosting system having a first gas compressor, a second gas compressor, and a controller configured to regulate operation of the first and second compressors to selectively pressurize air being received from the ambient for delivery to the cylinder.2. The engine of claim 1 , wherein the first gas compressor is configured as a low-flow turbocharger driven by the post- ...

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Номер записи: 35
02-03-2017 дата публикации

INSTALLING STRUCTURE FOR ELECTRIC VARIABLE VALVE TIMING APPARATUS

Номер: US20170058725A1
Автор: TOSHITANI Hiroki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An electric variable valve timing apparatus includes a sprocket unit and an electric motor. The electric motor is fixed to a chain cover with bolts. The chain cover includes plural bosses each having an internal thread to which one of the bolts is threaded. The bosses extend from the chain cover toward the sprocket unit to positions at which the bosses face an outer periphery of the sprocket unit in a radial direction. The bosses are arranged such that, when the sprocket unit moves downward from an attaching position, at which the sprocket unit is attached to the camshaft, at least two bosses are engaged with the sprocket unit to restrict downward movement of the sprocket unit, and that the sprocket unit is allowed to move between a location outside of a space covered by the chain cover and the attaching position. 1. An installing structure for an electric variable valve timing apparatus , wherein a sprocket unit, which is attached to a camshaft of an internal combustion engine, and', 'an electric motor, which is coupled to the sprocket unit,, 'the electric variable valve timing apparatus includes'} a first rotor, which is fixed to one end of the camshaft,', 'a second rotor, which surrounds a circumference of the first rotor,', 'a sprocket, which is provided integrally with an outer periphery of the second rotor, wherein a timing chain of the internal combustion engine is looped over the sprocket, and', 'a varying mechanism, which is provided between the first rotor and the second rotor to couple the first rotor and the second rotor while allowing the rotors to rotate relative to each other,, 'the sprocket unit includes'}the electric motor is fixed to a chain cover, which covers the timing chain, with bolts and is coupled to the varying mechanism to actuate the varying mechanism,the chain cover includes a plurality of bosses each having an internal thread to which one of the bolts is threaded,the bosses extend from the chain cover toward the sprocket unit to ...

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Номер записи: 36
04-03-2021 дата публикации

SWITCH PROVIDING ON-BOARD DIAGNOSTIC FEEDBACK FOR ELECTROMAGNETICALLY ACTUATED LATCHING ROCKER ARM ASSEMBLY

Номер: US20210062685A1
Автор: Campbell Michael J., STRETCH Dale Arden
Принадлежит:

A rocker arm assembly that includes an electromagnetic latch assembly with a latch pin and an actuator operative to actuate the latch pin between a first position and a second position. The actuator includes an electromagnet powered through a coil circuit. The rocker arm assembly further includes a switch in a switch circuit. The coil circuit and the switch circuit are connected in parallel. Moving the latch pin between the first position and the second position opens and closes the switch. In an alternate embodiment, relative motion of two rocker arms opens and closes the switch. The rocker arm assembly allows OBD information to be obtained without making electrical connections to the rocker arm assembly other than ones provided to power the electromagnet. 1. A rocker arm assembly , comprising:an electromagnetic latch assembly comprising a latch pin and an actuator, the actuator comprising an electromagnet;a first rocker arm and a second rocker arm that are selectively engaged by the latch pin;a switch circuit comprising a switch; anda coil circuit comprising the electromagnet;wherein the switch circuit and the coil circuit are connected in parallel;the actuator is operative to actuate the latch pin between a first position and a second position;the rocker arm assembly has a configuration that depends on one or more of the latch pin position and the relative positions of the first rocker arm and the second rocker arm; andthe switch is open or closed depending on the configuration of the rocker arm assembly.2. The rocker arm assembly of claim 1 , wherein the actuator is operative to actuate the latch pin between the first position and the second position whether the switch is open or closed.3. The rocker arm assembly of claim 1 , wherein:the switch circuit has a higher resistance than the coil circuit; andmost of the switch circuit resistance is provide by one or more coatings on contact surfaces of the switch.4. The rocker arm assembly of claim 1 , wherein:the ...

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Номер записи: 37
04-03-2021 дата публикации

CAM PHASER CONTROL SYSTEMS AND METHODS FOR ENGINE OFF CONDITIONS

Номер: US20210062690A1
Автор: Feldmann Scott T., Murthy Pratap S., STEWART Etsuko M.
Принадлежит:

A control system of a vehicle includes: an electric motor configured to phase rotation of an camshaft of an engine relative to rotation of a crankshaft of the engine; a current module configured to, while the engine is off: selectively transition a current signal back and forth between a first state and a second state; and a motor driver module configured to, while the engine is off: apply power to the electric motor from a battery and adjust a position of the camshaft toward a predetermined position when the current signal is in the first state; and disconnect the electric motor from the battery and allow the position of the camshaft to move away from the predetermined position when the current signal is in the second state. 1. A control system of a vehicle , comprising:an electric motor configured to phase rotation of a camshaft of an engine relative to rotation of a crankshaft of the engine; 'selectively transition a current signal back and forth between a first state and a second state; and', 'a current module configured to, while the engine is off and an ignition system of the vehicle is on during an auto-stop portion of an auto-stop/start event apply power to the electric motor from a battery and adjust a position of the camshaft toward a predetermined position when the current signal is in the first state; and', 'disconnect the electric motor from the battery and allow the position of the camshaft to move away from the predetermined position when the current signal is in the second state., 'a motor driver module configured to, while the engine is off and the ignition system of the vehicle is on during the auto-stop portion of the auto-stop/start event2. The control system of wherein the current module is configured to claim 1 , during the auto-stop portion of the auto-stop/start event claim 1 , set the current signal to the first state and maintain the current signal in the first state for a predetermined period after both (a) a first rotational speed of the ...

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Номер записи: 38
20-02-2020 дата публикации

INTAKE/EXHAUST VALVE AND OPERATION CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

Номер: US20200056517A1
Автор: MURAKAMI Kazuto
Принадлежит: OZMA ELECTRONIC CONTROL CO., LTD.

A housing of an exhaust valve is provided for an exhaust port communicating with a combustion chamber. The housing has a plate-shaped portion formed with a plurality of fixed slits radially extending from the central axis of the port. A valve element is provided adjacent to the plate-shaped section, is rotatable around a central axis, and has formed with a plurality of movable slits radially extending from the central axis. Due to the action of electromagnets and a permanent magnet attached to an annular member, the valve body is rotationally displaced around the central axis of the port, and the relative positional relationship between the fixed slits and the movable slits is changed to open and close the exhaust valve. The same is also true for an intake valve. 1. An intake/exhaust valve for an internal combustion engine , comprising:a housing provided on an intake port and/or an exhaust port, which communicates with a combustion chamber, the housing having a plate-shaped portion provided with a plurality of fixed slits radially extending from a central axis of the port;a valve element provided adjacent to the plate-shaped portion, the valve element being rotatable about the central axis and being provided with a plurality of movable slits radially extending from the central axis; anda drive mechanism rotating the valve element about the central axis to change a relative positional relationship between the fixed slits and the movable slits;wherein the drive mechanism comprises an annular member, provided in the housing to be rotatable about the central axis and has permanent magnets arranged evenly distributed around the central axis, and electromagnets, provided outside the housing and disposed at positions corresponding to the permanent magnets,the electromagnets are arranged such that first and second ends of iron cores are close to the annular member, the permanent magnets are arranged such that an N-pole or an S-pole is close to the first and second ends of ...

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Номер записи: 39
29-05-2014 дата публикации

CAMLESS ENGINE OPERATING SYSTEM

Номер: US20140144398A1
Автор: Keli Jacob B., Vuai Abbas M.
Принадлежит:

A camless engine operating system that includes an inlet valve switch configured to detect rotational movement of an inlet valve power disc and to output an inlet actuator voltage. A voltage level of the inlet actuator voltage is synchronous with the rotational movement of the inlet valve power disc. An inlet valve is movable to open and close an intake port of a combustion chamber. An inlet valve mechanical force moves the inlet valve to open the intake port. An inlet actuator is configured to exert the inlet valve mechanical force onto the inlet valve. The inlet actuator voltage received by the inlet actuator controls the inlet actuator to exert the inlet valve mechanical force onto the inlet valve. 1. A camless engine operating system comprising:an inlet valve switch configured to detect rotational movement of an inlet valve power disc and to output an inlet actuator voltage, a voltage level of the inlet actuator voltage being synchronous with the rotational movement of the inlet valve power disc;an inlet valve movable to open and close an intake port of a combustion chamber, an inlet valve mechanical force moving the inlet valve to open the intake port;an inlet actuator configured to exert the inlet valve mechanical force onto the inlet valve, the inlet actuator voltage received by the inlet actuator controlling the inlet actuator to exert the inlet valve mechanical force onto the inlet valve.2. A camless engine operating system according to claim 1 , wherein an amount of the inlet valve mechanical force exerted onto the inlet valve is synchronous with the rotational movement of the inlet valve power disc.3. A camless engine operating system according to claim 1 , wherein the inlet valve switch is configured to output the inlet actuator voltage onto an inlet actuator voltage signal line claim 1 , the inlet actuator being configured to receive the inlet actuator voltage from the inlet actuator voltage signal line.4. A camless engine operating system according to ...

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Номер записи: 40
10-03-2016 дата публикации

VARIABLE VALVE LIFT APPARATUS

Номер: US20160069225A1
Автор: KIM Sangyun
Принадлежит:

A variable valve lift apparatus includes a lever body having a set length for a lever motion. One end of the lever body is connected with a hydraulic pressure supply portion and another end thereof is connected with the valve. A rotation shaft is disposed such that a width direction of the lever body is a length direction of the rotation shaft. A roller rotates around the rotation shaft. A high cam is disposed at the camshaft to rotate together with the camshaft and has a lobe shape for rolling-contact the roller to realize a high lift. A low cam is disposed at the camshaft to rotate together with the camshaft and has a lobe shape for rolling-contacting the roller to realize a low lift. The roller is disposed to slide along the length direction of the rotation shaft and selectively rolling-contact with the high cam or the low cam by sliding. 1. A variable valve lift apparatus for selectively changing a lift of a valve to perform intake or exhaust of an engine according to rotation of a camshaft with a high lift or a low lift , the variable valve lift apparatus comprising:a lever body having a set length for a lever motion according to the rotation of the camshaft and adapted that one end thereof is connected with a hydraulic pressure supply portion and another end thereof is connected with the valve;a rotation shaft disposed such that a width direction of the lever body is a length direction of the rotation shaft;a roller disposed to rotate around the rotation shaft;a high cam disposed at the camshaft to rotate together with the camshaft and to have a lobe shape, the high cam rolling-contacted with the roller to realize the high lift; anda low cam disposed at the camshaft to rotate together with the camshaft and have a lobe shape, the low cam rolling-contacted with the roller to realize the low lift,wherein the roller is disposed to slide along the length direction of the rotation shaft and is selectively rolling-contacted with the high cam or the low cam by sliding ...

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Номер записи: 41
10-03-2016 дата публикации

System comprising a pumping assembly operatively connected to a valve actuation motion source or valve train component

Номер: US20160069229A1
Автор: G. Michael Gron, Jr., Justin Baltrucki, Scott Nelson
Принадлежит: Jacobs Vehicle Systems Inc

A system for supplying hydraulic fluid in an internal combustion engine comprises a pumping assembly disposed within a housing and a hydraulic circuit, operatively connected to the pumping assembly, also disposed within the housing, which housing may be fixed or dynamic. A source of pumping motions is operatively connected to the pumping assembly, which source of pumping motions may comprise a valve actuation motion source or a component of a valve train between the valve actuation motion source and an engine valve. Pumping motions applied to the pumping assembly by the source of pumping motions causes hydraulic fluid received from a supply pressure hydraulic fluid input of the hydraulic circuit to be transmitted to an increased pressure hydraulic fluid output of the hydraulic circuit.

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Номер записи: 42
10-03-2016 дата публикации

SYSTEM AND METHOD FOR PREVENTING STICKING OF CONTINUOUS VARIABLE VALVE TIMING LOCKING-PIN

Номер: US20160069230A1
Автор: KIM Hyun, KIM Sung Joo
Принадлежит:

A method of preventing sticking of a CVVT locking pin includes a condition determining step that determines whether a CVVT operation condition is satisfied, an locking-pin unlocking step that unlocks a locking-pin before the CVVT is operated, and a CVVT operating step that operates the CVVT, and a system for preventing sticking of a CVVT locking pin. 1. A method of preventing sticking of a CVVT locking pin , the method comprising:a condition determining step that determines, by a determiner, whether a CVVT operation condition is satisfied;an locking-pin unlocking step that unlocks, by a controller, a locking-pin before the CVVT is operated; anda CVVT operating step that operates, by the controller, the CVVT.2. The method of claim 1 , wherein the locking-pin unlocking step unlocks the locking-pin by applying an electric signal to a solenoid valve for operating the locking-pin.3. The method of claim 2 , wherein the locking-pin unlocking step further includes an unlocking determining step that determines claim 2 , by the determiner claim 2 , whether the locking-pin has been fully unlocked claim 2 , by comparing the time when an electric signal is applied to the solenoid valve with a standard value.4. The method of claim 3 , wherein the unlocking determining step determines claim 3 , by the determiner claim 3 , that the locking pin has been fully unlocked claim 3 , when a time lapsing from the point of time when an electric signal to the solenoid valve is larger than a standard value.5. A system for preventing sticking of a CVVT locking pin claim 3 , comprising:a determiner that determines whether a CVVT operation condition is satisfied; anda controller that unlocks the locking-pin before the CVVT is operated and then operates the CVVT, when the CVVT operation condition is satisfied.6. The system of claim 5 , further comprising:a storage that stores a standard value for determining whether the locking-pin has been fully unlocked; anda calculator that measures a time ...

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Номер записи: 43
10-03-2016 дата публикации

METHOD AND DEVICE FOR CONTROLLING A SOLENOID ACTUATOR

Номер: US20160069466A1
Автор: Etzler Dirk
Принадлежит:

A solenoid actuator for an injection valve or an intake valve is driven with current control during closed-loop control phases. In between the closed-loop current control, the actuator must be clamped to an opposite voltage so as to quickly decrease the current through the solenoid. The current is measured immediately following the clamping phase so as to determine whether or not the clamping phase resulted in the correct current level. If the measured current indicates an extraneous reduction in the current, the clamping phase duration is shortened for the next activation of this clamping phase. If the measured current indicates an insufficient decrease, the clamping phase duration is lengthened for the next following activation cycle. 1. A method of driving a solenoid actuator , the method comprising:connecting a voltage signal to the actuator and causing an electric current to flow through the actuator, the current having mutually different current intensities during temporally offset phases of actuator operation;selectively operating the actuator during a plurality of temporally subsequent closed-loop current control phases during which the current is maintained within a given target window defined between a lower current set point and a higher current set point, wherein the current through the actuator is measured and the voltage signal is adjusted to cause the current to remain within the given target window;selectively operating the actuator in a clamping phase between two respective closed-loop current control phases, during which clamping phase the current through the actuator is decreased by applying an inverted voltage signal to the actuator for a given clamping time period;measuring the current through the actuator immediately following the clamping phase to determine whether the current intensity has undershot or overshot the target window of the subsequent closed-loop current control phase; and if the current intensity has undershot the lower current ...

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Номер записи: 44
19-03-2015 дата публикации

CONTROLLER OF VARIABLE VALVE APPARATUS OF INTERNAL COMBUSTION ENGINE AND VARIABLE VALVE SYSTEM OF INTERNAL COMBUSTION ENGINE

Номер: US20150075475A1
Автор: Kawada Shinichi, Kokubo Naoki
Принадлежит:

A controller of a variable valve apparatus of an internal combustion engine has an engine start indication detecting circuit that detects an indication of an engine start. When the indication of the engine start is detected by the engine start indication detecting circuit in a state in which temperature of the engine is lower than a predetermined temperature, an electric motor provided in the variable valve apparatus is supplied with a current, and this current supply to the electric motor is maintained for a predetermined time from a time point of the detection of the indication of the engine start to an engine cranking start. 1. A controller of a variable valve apparatus of an internal combustion engine , the variable valve apparatus having an output member that is operated according to a power transmitted from an electric motor through a speed reduction mechanism adjacent to the electric motor and changing opening and closing timing of an engine valve according to the operation of the output member , the speed reduction mechanism being supplied with lubricating oil , the controller comprising:an engine start indication detecting circuit that detects an indication of an engine start, andwhen the indication of the engine start is detected by the engine start indication detecting circuit in a state in which temperature of the engine is lower than a predetermined temperature, the electric motor being supplied with a current, and the current supply to the electric motor being maintained for a predetermined time from a time point of the detection of the indication of the engine start to an engine cranking start.2. The controller of the variable valve apparatus of the internal combustion engine as claimed in claim 1 , wherein:when maintaining the current supply to the electric motor for the predetermined time from the time point of the detection of the indication of the engine start to the engine cranking start, the output member is in a no-operation state.3. The ...

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Номер записи: 45
17-03-2016 дата публикации

ENGINE VARIABLE VALVE LIFT SYSTEM HAVING INTEGRATED HYDRAULIC FLUID RETENTION

Номер: US20160076412A1
Автор: Nowak Peter E
Принадлежит:

An electro-hydraulic variable valve lift system includes a medium pressure chamber, a high pressure circuit, a valve, a pump and an actuator. The chamber is formed in a cylinder head assembly and is in fluid communication with a hydraulic fluid source. The high pressure circuit is positioned in the cylinder head assembly and is in selective fluid communication with the chamber. The valve is in fluid communication with the chamber and the high pressure circuit, and the pump is configured to pump hydraulic fluid in the high pressure circuit. The actuator is in fluid communication with the pump, control valve and high pressure circuit, and is in engagement with an intake valve. The chamber and the actuator are each positioned in the cylinder head assembly at a location above the valve such that during an engine shutdown event, hydraulic fluid is retained in the chamber and the valve. 1. An electro-hydraulic actuator system for a variable valve lift system of an engine , the electro-hydraulic actuator system comprising:a medium pressure chamber formed in a cylinder head assembly and adapted to be in fluid communication with a source of hydraulic fluid;a high pressure fluid circuit positioned in the cylinder head assembly and in selective fluid communication with and receiving hydraulic fluid from the medium pressure chamber;a control valve positioned in the cylinder head assembly and in fluid communication with the medium pressure chamber and the high pressure fluid circuit;a pump configured to pump hydraulic fluid in the high pressure fluid circuit; andan actuator in fluid communication with the pump, control valve and high pressure fluid circuit, the actuator in engagement with an intake valve of the engine;wherein the control valve is configured to be controlled to selectively block fluid communication between the high pressure fluid circuit and the medium pressure chamber thereby providing for the hydraulic fluid pumped by the pump to displace the actuator to open ...

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Номер записи: 46
17-03-2016 дата публикации

VARIABLE LOST MOTION VALVE ACTUATOR AND METHOD

Номер: US20160076413A1
Автор: Brzoska Andrew, Cosma Gheorghe, Ernest Steven, Leitkowski Edward T., Mossberg Jeffrey, Paterson Guy, Schwoerer John A., VANDERPOEL RICHARD, Vorih Joseph M.
Принадлежит:

Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position. 1. A hydraulic lost motion system for controlling the operation of at least one engine intake valve for an internal combustion engine , the system comprising:a) a first piston slidably disposed in a first piston chamber in a housing of the hydraulic lost motion system, the first piston being moveable in response to rotation of an engine cam shaft, and being configured to interact with at least one engine intake valve for movement of the engine intake valve in response at least in part to the position of the first piston;b) an accumulator including an accumulator piston slidably disposed in an accumulator piston chamber defined at least in part in the housing, the accumulator piston being biased toward an end of the accumulator piston chamber by a spring; i) an electromagnetic solenoid coil defining a longitudinal central axis;', 'ii) an armature mounted for movement relative to the electromagnetic solenoid coil in a direction generally along the longitudinal central axis of the coil and movable between a retracted and an extended position when the electromagnetic solenoid coil is electrically actuated;', 'iii) a solenoid pin connected to the armature for movement along with the armature in a direction generally along the longitudinal central axis of the coil;', 'iv) a trigger valve piston being configured to selectively block fluid flow along a fluid path connecting the first piston chamber and an associated accumulator ...

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Номер записи: 47
17-03-2016 дата публикации

VARIABLE LOST MOTION VALVE ACTUATOR AND METHOD

Номер: US20160076414A1
Автор: Brzoska Andrew, Cosma Gheorghe, Ernest Steven, Leitkowski Edward T., Mossberg Jeffrey, Paterson Guy, Schwoerer John A., VANDERPOEL RICHARD, Vorih Joseph M.
Принадлежит:

Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position. 1. A hydraulic lost motion system for controlling the operation of at least one engine intake valve for an internal combustion engine , the system comprising:a) a first piston slidably disposed in a first piston chamber in a housing of the hydraulic lost motion system, the first piston being moveable in response to rotation of an engine cam shaft, and being configured to interact with at least one engine intake valve for movement of the engine intake valve in response at least in part to the position of the first piston;b) an accumulator including an accumulator piston slidably disposed in an accumulator piston chamber defined at least in part in the housing, the accumulator piston being biased toward an end of the accumulator piston chamber by a spring;c) a trigger valve in hydraulic communication with the first piston chamber, the trigger valve including:i) an electromagnetic solenoid coil defining a longitudinal central axis;ii) an armature mounted for movement responsive to the electromagnetic solenoid coil in a direction generally along the longitudinal central axis of the coil, the armature being movable between a retracted position and an extended position when the electromagnetic solenoid coil is electrically actuated, the armature being connected to an elongate solenoid pin;iii) a trigger valve piston being configured to selectively block fluid flow along a fluid path connecting the first piston chamber and an ...

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Номер записи: 48
15-03-2018 дата публикации

ROCKER ARM HAVING OIL RELEASE VALVE THAT OPERATES AS AN ACCUMULATOR

Номер: US20180073401A1
Автор: Andrisani Nicola
Принадлежит: Eaton Srl

An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode can include a rocker shaft and a rocker arm. The rocker shaft can define a pressurized oil supply conduit. The rocker arm can receive the rocker shaft and is configured to rotate around the rocker shaft. The rocker arm can have an oil supply passage defined therein. A valve bridge can engage a first exhaust valve and a second exhaust valve. An accumulator assembly can be disposed in the rocker arm and includes an accumulator piston that translates within the accumulator piston housing between closed and open positions. A predetermined amount of oil is stored in the accumulator assembly. 1. An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode , the exhaust valve rocker arm assembly comprising:a rocker shaft that defines a pressurized oil supply conduit;a rocker arm that receives the rocker shaft and is configured to rotate around the rocker shaft, the rocker arm having an oil supply passage and an accumulator piston housing defined therein;a valve bridge that engages a first exhaust valve and a second exhaust valve;a hydraulic lash adjuster assembly disposed on the rocker arm having a first plunger body movable between a first position and a second position, wherein in the first position, the first plunger body extends rigidly for cooperative engagement with the valve bridge;a check valve disposed on the rocker arm and having an actuator that selectively releases pressure in the hydraulic lash adjuster; andan accumulator assembly disposed in the rocker arm and including an accumulator piston that translates within the accumulator piston housing between closed and open positions, the accumulator assembly configured to store a predetermined amount of oil when the first plunger body moves toward the first position.2. The exhaust valve rocker assembly of wherein the accumulator assembly further comprises an accumulator ...

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Номер записи: 49
05-03-2020 дата публикации

CAM ROTARY ENGINE POWER SYSTEM OF INTERNAL COMBUSTION TYPE

Номер: US20200072133A1
Автор: BIAN Yongning, HONG Pengfei, SUN Shoulin, WANG Lin, Yang Yang, ZHANG Guanglin
Принадлежит:

A cam rotary engine power system of internal combustion type, making use of the cam and a plurality of cam followers to form cam mechanisms, and forming a plurality of circumferential distributed sealing working chambers with the inner-cavity-member, the external-rotating-surface-member and the end-cover-member. The volume of those chambers change with the relative rotation of the cam and the cam followers, in which the intake, compression, power and exhaust processes of the Otto cycle are completed by valve coordination. The chemical energy produced by gas combustion is directly converted into the mechanical energy of the rotor in the form of fixed axis rotation. The power system does not set the crankshaft of piston engine, and the high pressure gas directly drives the rotor to rotate and output power. The structure of this power system is relatively simple and its parameters can be adjusted in a wide range. 1. A power system of cam rotary internal combustion engine , comprising an inner cavity member , an external rotating surface member , a cam , end cover members , cam followers , valves and valve controllers; wherein , rise and fall intervals of the cam's contour profile causing size change of the cam surface , an annular clearance with varied dimension being formed by encircling the cam with the inner surface of the inner cavity rotating surface member , the outer surface of the external rotating surface member and the end cover members , in which the coupled surfaces form the contact sealing relationship except the cam contour profile; the cam being fixed with one of the inner cavity member or the external rotating surface member and rotated relative to the other; a set of cam followers being installed on the inner cavity member or the external rotating surface member which is not fixed with the cam , sealing contact being formed by a higher pair joints between the cam followers and the smooth cam contour profile surface , so as to separate the annular ...

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Номер записи: 50
18-03-2021 дата публикации

Method for controlling lubrication of a connecting rod bearing

Номер: US20210079818A1
Автор: Arne Andersson, Bengt LASSESSON
Принадлежит: Volvo Truck Corp

The present invention relates to a method for controlling lubrication of a connecting rod bearing of an internal combustion engine arrangement. The method comprises the steps of controlling an inlet valve to be maintained in the closed position during a movement of the reciprocating piston from the top dead center during an intake stroke for a predetermined number of crank angle degrees; and positioning the inlet valve in the open position when the reciprocating piston has traveled the predetermined number of crank angle degrees from the top dead center, wherein lubricating medium is provided to the connecting rod bearing within a predetermined time period before the inlet valve is arranged in the open position.

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Номер записи: 51
24-03-2016 дата публикации

LOST MOTION ASSEMBLY IN A VALVE BRIDGE FOR USE WITH A VALVE TRAIN COMPRISING A HYDRAULIC LASH ADJUSTER

Номер: US20160084122A1
Автор: BALTRUCKI Justin
Принадлежит:

In an internal combustion engine comprising two or more engine valves that receive valve actuation motions from a valve actuation motion source via a valve train, which valve train comprises a hydraulic lash adjuster, an apparatus for valve actuation comprises a valve bridge and a lost motion assembly disposed therein. The lost motion assembly comprises a first piston disposed in a first piston bore formed in the valve bridge. The first piston is configured to operatively connect with a component of the valve train. A biasing element is configured to bias the first piston out of the first piston bore with a first force that is greater than a second force applied to the first piston by the hydraulic lash adjuster. A travel limiter is configured to limit travel of the first piston out of the first piston bore to be no greater than a maximum lost motion distance. 1. An apparatus for actuating at least one of two or more engine valves in an internal combustion engine , comprising:a valve bridge operatively connected to the two or more engine valves; anda hydraulically-actuated lost motion assembly disposed in the valve bridge, the hydraulically-actuated lost motion assembly comprising:a first piston disposed within a first piston bore formed in the valve bridge and configured to operatively connect with the valve train;a first biasing element configured to bias the first piston out of the first piston bore, the first biasing element further configured to provide a first force to the first piston that is greater than a second force applied to the first piston by a lash adjuster; anda travel limiter configured to limit travel of the first piston out of the first piston bore,wherein the lash adjuster is disposed upstream of the hydraulically-actuated lost motion assembly in a valve train configured to be operatively connected to a valve actuation motion source and to the valve bridge.2. The apparatus of claim 1 , wherein the first piston comprises an internal cavity ...

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Номер записи: 52
23-03-2017 дата публикации

Electromechanical Valve Lash Adjuster

Номер: US20170081993A1
Автор: Genise David Gerard, Wadikhaye Sachin, Wang Hongbin N., Zurface Austin Robert
Принадлежит: EATON CORPORATION

An internal combustion engine includes a cylinder head, a poppet valve having a seat within the cylinder head, a cam shaft on which is mounted an eccentrically shaped cam, and a rocker arm assembly comprising a rocker arm, a cam follower, and an electromagnetically actuated lash adjuster. The lash adjuster provides a continuously variable length fulcrum for the rocker arm. The actuator may be a piezoelectric stepper motor. The lash adjuster may be operative to vary a rate of internal exhaust gas recirculation and without requiring crank angle data. 1. An internal combustion engine , comprising:a cylinder head in which is formed a cylinder;a poppet valve for the cylinder having a seat within the cylinder head;a cam shaft on which is mounted an eccentrically shaped cam; anda rocker arm assembly comprising a cam follower, a rocker arm, and an electromechanical lash adjuster;wherein the electromechanical lash adjuster provides a fulcrum for the rocker arm, comprises a variable length structure that determines the spacing between the fulcrum and the cylinder head, and comprises an electromechanical actuator operable to vary the length of the structure and thus spacing the between the fulcrum and the cylinder head;the cam follower is positioned to engage and follow the cam as the cam shaft rotates; andthe rocker arm assembly is operative to form a first force transmission pathway through which force from the cam is transmitted to the poppet valve to actuate the poppet valve.2. An internal combustion engine according to claim 1 , wherein:the electromechanical lash adjuster comprises a first part and the second part;the electromechanical actuator is configured to rotate one of the first and second parts relative to the other about an axis;the first and second parts interface through one or more surfaces that are angled such that relative rotation between the first and second parts about the axis causes a linear displacement between the first and second parts along the axis ...

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Номер записи: 53
23-03-2017 дата публикации

SYSTEM AND METHODS FOR PREVENTING HYDROCARBON BREAKTHROUGH EMISSIONS

Номер: US20170082043A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for performing fuel vapor canister purging operations during engine off conditions. In one example, a method may include, responsive to an indication of breakthrough of vapors from a fuel vapor canister during engine-off conditions, configuring a first cylinder with both intake and exhaust valves open, opening a canister purge valve, and applying air pressure to the vapor canister such that desorbed canister vapors may be routed to an exhaust catalyst, the exhaust catalyst temperature maintained above a light off temperature. In this way, during engine-off conditions, including conditions wherein a vehicle is powered solely by battery, bleedthrough emissions may be reliably reduced by purging the vapor canister to the exhaust catalyst without requiring turning on the engine. 1. A method comprising:while an engine is off, adsorbing fuel vapors in an adsorbent, said vapors are generated in a fuel tank coupled to said engine; andin response to detecting breakthrough of said vapors from said adsorbent while said engine is off: routing vapors from said adsorbent through said engine into a catalyst coupled to an exhaust of said engine.2. The method recited in claim 1 , further comprising turning said engine until an intake valve and an exhaust valve of a cylinder of said engine are simultaneously open while said engine is not combusting and in response to breakthrough of said vapors from said canister into the atmosphere.3. The method recited in claim 1 , further comprising electrically heating said catalyst in response to detecting breakthrough of said vapors from said adsorbent while said engine is off.4. The method recited in claim 1 , further comprising forcing air through said adsorbent into said cylinder and into said catalyst in response to said breakthrough of said vapors from said adsorbent into the atmosphere and while said engine is off.5. The method recited in claim 1 , wherein said routing of said vapors into said catalyst ...

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Номер записи: 54
12-03-2020 дата публикации

LOST MOTION VARIABLE VALVE ACTUATION SYSTEMS AND METHODS

Номер: US20200080450A1
Автор: GRON, JR. G. Michael, MOORE Jacob M., Schwoerer John A.
Принадлежит:

A compact, modular, lost motion variable valve actuation assembly includes a dry start hydraulic circuit to enable quick priming of a lost motion master-slave circuit from a dry start reservoir to the master piston chamber during engine start. Motion of the master piston on engine startup may draw in fluid from the dry start hydraulic circuit. The dry start components may be integrated into a compact modular rocker shaft pedestal package suitable for retrofit on existing engine head assemblies. The master piston may include a push tube interface that includes a deep push tube cavity and lubrication capabilities in the master piston that provides for improved wear, stability, easy installation and alignment. The slave piston may be provided with a valve catch to reduce valve closing velocity during cycles involving lost-motion. 1. An engine valve actuation assembly for providing variable valve actuation in an engine valve train comprising:a housing;a master piston bore defined in the housing;a master piston cooperating with the master piston bore to define a master piston chamber; the master piston having a motion receiving interface for receiving motion from a motion source in the valve train;a slave piston bore defined in the housing;a slave piston cooperating with the slave piston bore to define a slave piston chamber; the slave piston having a motion transferring interface for transferring motion to a motion receiving component in the valve train;wherein the master piston motion receiving interface comprises a push tube receiving socket in the master piston for receiving a push tube end, the push tube receiving socket extending a sufficient depth within the master piston that the push tube end remains positioned in the master piston bore throughout operation.2. The engine valve actuation assembly of claim 1 , wherein the push tube receiving socket further comprises a push tube receiving socket end wall having a flat or concave surface.3. The engine valve ...

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Номер записи: 55
19-06-2014 дата публикации

VARIABLE LOST MOTION VALVE ACTUATOR AND METHOD

Номер: US20140165937A1
Автор: Brzoska Andrew, Cosma Gheorghe, Ernest Steven, Leitkowski Edward T., Mossberg Jeffrey, Paterson Guy, Schwoerer John A., VANDERPOEL RICHARD, Vorih Joesph M.
Принадлежит: Jacobs Vehicle Systems, Inc.

A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed. 1. A valve actuation system for controlling at least one engine valve , comprising: (i) a first piston disposed in a first piston chamber, being moveable by an engine cam shaft,', '(ii) a second piston disposed in a second piston chamber;', '(iii) at least one engine valve being moveable by the second piston; and', '(iv) a hydraulic circuit configured to permit hydraulic communication between the first piston chamber and the second piston chamber;, 'a) a hydraulic lost motion system havingb) a plurality of solenoid valves in hydraulic communication with the hydraulic circuit; andc) a plurality of accumulators, each holding a supply of fluid under pressure, each of the plurality of solenoid valves having at least one dedicated accumulator disposed proximate thereto.2. The valve actuation system of claim 1 , wherein the system further comprises a controller that is configured to selectively open and close individual ones of the plurality of solenoid valves more than ...

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Номер записи: 56
25-03-2021 дата публикации

SUPPORT ARRANGEMENT FOR AN ACTUATOR OF A CAM PHASER

Номер: US20210087954A1
Автор: Stanhope Daniel
Принадлежит:

A support arrangement for an electromagnetic actuator of a hydraulic cam phaser, the support arrangement including an actuator module including a linear electromagnetic actuator including an axially displaceable connecting rod; and a support element configured to support the actuator module on a camshaft, wherein the actuator module is connected to the support element by an electrical contact arrangement configured to actuate the linear electromagnetic actuator, and wherein the electrical contact arrangement includes an elastic clamping element. 1. A support arrangement for an electromagnetic actuator of a hydraulic cam phaser , the support arrangement comprising:an actuator module including a linear electromagnetic actuator including an axially displaceable connecting rod; anda support element configured to support the actuator module on a camshaft,wherein the actuator module is connected to the support element by an electrical contact arrangement configured to actuate the linear electromagnetic actuator, andwherein the electrical contact arrangement includes an elastic clamping element.2. The support arrangement according to wherein the elastic clamping element is arranged at the support element.3. The support arrangement according to claim 1 , wherein the elastic clamping element includes a first clamping device and a second clamping device.4. The support arrangement according to claim 3 , wherein the first clamping device and the second clamping device are arranged parallel to each other.5. The support arrangement according to claim 1 , wherein the elastic clamping element includes a first clamping arm configured to clamp and fix an actuator contact.6. The support arrangement according to claim 5 ,wherein the elastic clamping element includes a second clamping arm configured to clamp and fix the actuator contact, andwherein the second clamping arm is arranged opposite to the first clamping arm.7. The support arrangement according to claim 6 , wherein the first ...

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Номер записи: 57
31-03-2016 дата публикации

VARIABLE VALVE LIFT APPARATUS

Номер: US20160090875A1
Автор: CHOI Byongyoung
Принадлежит: HYUNDAI MOTOR COMPANY

A variable value lift apparatus may include a camshaft, a first moving cam including cams having different shapes, having a first cam guide protrusion, rotating with the camshaft, and being slidable in an axial direction of the camshaft, a second moving cam including cams having different shapes, having a second cam guide protrusion, rotating together with the camshaft, and being slidable in the axial direction of the camshaft, a first operating unit selectively jutting out to guide the first cam guide protrusion to move the first moving cam in a first direction, a second operating unit selectively jutting out to guide the second cam guide protrusion to move the second moving cam in a second direction, a controller to control operations of the first and second operating units, and valve opening and closing units brought into contact with any one of the plurality cams to be opened and closed. 1. A variable value lift apparatus comprising:a camshaft;a first moving cam including a plurality of cams having different shapes, having a first cam guide protrusion, rotating together with the camshaft, and being slidable in an axial direction of the camshaft;a second moving cam including a plurality of cams having different shapes, having a second cam guide protrusion, rotating together with the camshaft, and being slidable in the axial direction of the camshaft;a first operating unit selectively jutting out to guide the first cam guide protrusion to move the first moving cam in a first direction;a second operating unit selectively jutting out to guide the second cam guide protrusion to move the second moving cam in a second direction;a controller configured to control operations of the first operating unit and the second operating unit; andvalve opening and closing units brought into contact with any one of the plurality cams to be opened and closed.2. The variable value lift apparatus of claim 1 , wherein the first cam guide protrusion and the second cam guide protrusion ...

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Номер записи: 58
29-03-2018 дата публикации

ELECTRIC CAM PHASING SYSTEM INCLUDING AN ACTIVATABLE LOCK

Номер: US20180087411A1
Автор: Burke Steven, Mlinaric Andrew
Принадлежит:

An electric cam phasing system is provided. The electric cam phasing system includes an electric motor including a center shaft; a camshaft; a center fastener extending into a center of the camshaft and a gearbox including a sprocket and a drive unit. The drive unit includes an input shaft coupling connected to the center shaft. The drive unit is configured for coupling the camshaft to the sprocket in a manner such that relative phasing of the camshaft with respect to sprocket is adjustable via the electric motor driving the drive unit. The electric cam phasing system also includes a lock positioned axially between the center shaft and the camshaft, the lock being configured for selectively engaging the center fastener to lock the gearbox. 1. An electric cam phasing system comprising:an electric motor including a center shaft;a camshaft;a center fastener extending into a center of the camshaft;a gearbox including a sprocket and a drive unit, the drive unit including an input shaft coupling connected to the center shaft, the drive unit being configured for coupling the camshaft to the sprocket in a manner such that relative phasing of the camshaft with respect to sprocket is adjustable via the electric motor driving the drive unit; anda lock positioned axially between the center shaft and the camshaft, the lock being configured for selectively engaging the center fastener to lock the gearbox.2. The electric cam phasing system as recited in wherein the lock includes an engager non-rotatably connected to the center shaft and configured for moving axially with respect to the center shaft.3. The electric cam phasing system as recited in wherein the lock includes an axially acting spring elastically forcing the engager away from the center shaft.4. The electric cam phasing system as recited in wherein the spring nonrotatably fixes the engager to the center shaft.5. The electric cam phasing system as recited in wherein the lock includes a movable element in a bore hole ...

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Номер записи: 59
21-03-2019 дата публикации

SYSTEM AND METHOD FOR ENGINE BRAKING

Номер: US20190085758A1
Автор: Kurtz Eric Matthew
Принадлежит:

Methods and systems for providing engine braking for a two stroke diesel engine are described. In one example, a flow through a mechanically driven supercharger is adjusted to provide engine braking for a two stroke diesel engine when engine braking is requested. The level or amount of engine braking may be adjusted via increasing or decreasing flow through the mechanically driven supercharger. 1. A two stroke diesel engine braking method , comprising:increasing engine braking torque of a two stroke engine without increasing engine pumping work via the mechanically driven supercharger in response to a request for engine braking; andsupplying air to engine cylinders via the mechanically driven supercharger.2. The two stroke diesel engine braking method of claim 1 , further comprising at least partially closing an exhaust valve to decrease work of the mechanically driven supercharger when adjusting a drive ratio of the mechanically driven supercharger is insufficient to reduce engine braking torque to a desired engine braking torque.3. The two stroke diesel engine braking method of claim 2 , where adjusting the position of the exhaust valve includes adjusting a position of the exhaust valve in proportion to a desired engine braking amount.4. The two stroke diesel engine braking method of claim 1 , where engine braking is increased via increasing a drive ratio of the mechanically driven supercharger claim 1 , and further comprising:closing a supercharger bypass valve in response to the request for engine braking.5. The two stroke diesel engine braking method of claim 4 , further comprising increasing a drive ratio of the mechanically driven supercharger in response to the request for engine braking.6. The two stroke diesel engine braking method of claim 5 , further comprising closing an EGR valve in response to the request for engine braking and a temperature of a catalyst being less than a threshold temperature.7. The two stroke diesel engine braking method of claim 6 ...

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Номер записи: 60
21-03-2019 дата публикации

ENGINE BRAKING FOR A TWO STROKE ENGINE

Номер: US20190085759A1
Автор: Kurtz Eric Matthew
Принадлежит:

Methods and systems for providing engine braking for a two stroke diesel engine are described. In one example, a flow through a mechanically driven supercharger is adjusted to provide engine braking for a two stroke diesel engine when engine braking is requested. The level or amount of engine braking may be adjusted via increasing or decreasing flow through the mechanically driven supercharger. 1. A two stroke diesel engine braking method , comprising:completing cycles of all engine cylinders in two revolutions of an engine; andcontinuously adjusting engine braking torque of the engine without increasing engine pumping work of the engine via continuously adjusting a drive ratio of the mechanically driven supercharger in response to a request for engine braking.2. The two stroke diesel engine braking method of claim 1 , where continuously adjusting the drive ratio of the mechanically driven supercharger includes increasing the drive ratio of the mechanically driven supercharger responsive to an increase in desired engine braking claim 1 , and further comprising:at least partially closing an exhaust valve to decrease work of the mechanically driven supercharger when continuously adjusting the drive ratio is insufficient to reduce engine braking torque to a desired engine braking torque.3. The two stroke diesel engine braking method of claim 2 , where continuously adjusting the drive ratio of the mechanically driven supercharger includes decreasing the drive ratio of the mechanically driven supercharger responsive to a decrease in desired engine braking.4. The two stroke diesel engine braking method of claim 1 , further comprising closing a supercharger bypass valve in response to the request for engine braking.5. The two stroke diesel engine braking method of claim 4 , further comprising fully closing vanes of a variable geometry turbocharger.6. The two stroke diesel engine braking method of claim 5 , further comprising closing an EGR valve in response to the request ...

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Номер записи: 61
19-03-2020 дата публикации

RESPONSE TIME IN LOST MOTION VALVETRAINS

Номер: US20200088073A1
Автор: BALTRUCKI Justin D., MORRISSEY Trevor
Принадлежит:

Hydraulic systems in an engine valvetrain having lost motion and/or braking hydraulic circuits are provided with a conditioning circuit that may include a supplemental supply passage, which provides continuous and supplemental supply of hydraulic fluid from a supply source to the braking and lost motion circuits, as well as a venting of the circuits to ambient, such that the hydraulic fluid in these circuits is kept in a refreshed and conditioned state without air contamination. A vented three-way solenoid valve may be utilized. The supplemental supply passage may be provided at various locations in the valvetrain and in the engine head environment. The supplemental supply passage may include flow and pressure control devices to control the flow of the supplemental supply of hydraulic fluid. 1. A system for actuating at least one engine valve in an internal combustion engine comprising:a valvetrain for conveying motion from a motion source to the at least one engine valve, the valvetrain including: a rocker arm mounted on a rocker shaft and a lost motion component;a control valve for controlling the lost motion component, the control valve having an inlet for receiving hydraulic fluid from a hydraulic fluid supply source;the rocker shaft having a lost motion control flow passage for conveying hydraulic fluid between the control valve and the lost motion component;the control valve having an activated mode, wherein the control valve permits an activation flow of hydraulic fluid in the lost motion control flow passage, and a deactivated mode, wherein the control valve prevents the activation flow in the lost motion control flow passage; anda conditioning circuit adapted to provide a supplemental flow of hydraulic fluid in the lost motion control flow passage when the control valve is in the deactivated mode, the conditioning circuit including a vent for venting the supplemental flow from the control flow passage.2. The system of claim 1 , wherein the rocker shaft ...

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Номер записи: 62
01-04-2021 дата публикации

ENGINE WITH ROTATING VALVE ASSEMBLY

Номер: US20210095582A1
Автор: Bashford Thomas, Cordier Daniel, Daniel Stacey, Garrett, III Norman H., Sondee Daniel, Vaseleniuck Darrick
Принадлежит:

An engine with rotating assembly is disclosed. The engine includes a block defining a cylinder bore; a crankshaft mounted for rotation in the block; a piston disposed in the cylinder bore; a connecting rod interconnecting the piston to the crankshaft; and a cylinder head coupled to the block having a combustion chamber aligned with the cylinder bore and having an intake opening and an exhaust opening communicating therewith; an intake port; an exhaust port; a rotatable intake valve barrel disposed between the intake opening and the intake port; and a rotatable exhaust valve barrel disposed between the exhaust opening and the exhaust port. A first electric motor is connected to the intake valve barrel and a second electric motor is connected to the exhaust valve barrel, the first electric motor rotates the intake valve barrel and second electric motor rotates the exhaust valve barrel independently of the intake valve barrel. 1. An engine , comprising:a block defining a cylinder bore;a crankshaft mounted for rotation in the block;a piston disposed in the cylinder bore;a connecting rod interconnecting the piston to the crankshaft; and a combustion chamber aligned with the cylinder bore and having an intake opening and an exhaust opening communicating therewith;', 'an intake port;', 'an exhaust port;', 'a rotatable intake valve barrel disposed between the intake opening and the intake port; and', 'a rotatable exhaust valve barrel disposed between the exhaust opening and the exhaust port;, 'a cylinder head coupled to the block and includinga first electric motor connected to the intake valve barrel and a second electric motor connected to the exhaust valve barrel, wherein the first electric motor rotates the intake valve barrel and second electric motor rotates the exhaust valve barrel independently of the intake valve barrel.2. The engine of claim 1 , wherein the intake valve barrel has a first diameter and the exhaust valve barrel has a second diameter different from ...

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Номер записи: 63
01-04-2021 дата публикации

Compression release type engine brake and operating method for the same

Номер: US20210095583A1
Автор: Dong Hyuk CHOI, Kyung Ryull KIM
Принадлежит: Hyundai Motor Co, Kia Motors Corp

An compression-release engine brake opens an exhaust valve at an end of a compression stroke for performing braking function. The compression-release engine brake includes: an exhaust cam including a main cam lobe and a brake cam lobe, an exhaust rocker arm including a roller mounted on one end of the exhaust rocker arm contacting or not contacting the exhaust cam and rotating around a rocker arm shaft by rotation of the exhaust cam, a valve bridge disposed at the other end of the exhaust rocker arm and connected with a pair of exhaust valves, and a reset module disposed between the exhaust rocker arm and valve bridge, contacting the roller with the brake cam lobe according to being suppled of engine brake oil, and exhausting the engine brake oil after opening the exhaust valve by rotation of the exhaust cam.

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Номер записи: 64
01-04-2021 дата публикации

Variable travel valve apparatus for an internal combustion engine

Номер: US20210095614A1
Автор: Caleb ALVARADO, Charles Price, Christopher Wayne Turner, Clayton JACOBS, Daniel S. Pedersen, David Evans, Drew Cohen, Guy Robert Babbitt, Jay MCFARLANE, Kristina Weyer-Geigel, Nicholas Paul Echter, Stephen John Charlton, William Anderson
Принадлежит: JP Scope Inc

An apparatus includes a valve and an actuator. The valve has a portion movably disposed within a valve pocket defined by a cylinder head of an engine. The valve is configured to move relative to the cylinder head a distance between a closed position and an opened position. The portion of the valve defines a flow opening that is in fluid communication with a cylinder of an engine when the valve is in the opened position. The actuator is configured to selectively vary the distance between the closed position and the opened position.

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Номер записи: 65
06-04-2017 дата публикации

CAMSHAFT ADJUSTING DEVICE

Номер: US20170096915A1
Автор: ZSCHIESCHANG Torsten
Принадлежит:

A vane cell adjuster including—a central locking device for locking the rotor in a central locking position, wherein—the central locking device has at least two spring-loaded locking pins which can be locked in a stator-fixed locking slotted guide and which, during a rotation of the rotor from the direction of an “early” or “late” stop position, lock into the central locking position from different directions in the locking slotted guide, wherein—a locking pin forms a valve unit with the respective accommodation chamber, wherein—in a first switch position of the valve unit, at least one first pressure medium line is connected to allow free flow to a second pressure medium line, and—in a second switch position of the valve unit, the first pressure medium line is connected to allow flow via a check valve to the second pressure medium line, wherein—the check valve is provided in the rotor outside of the locking pin. 18-. (canceled)9. A camshaft adjusting device comprising:a vane adjuster includinga stator connectable to a crankshaft of an internal combustion engine; and a rotorrotatably supported in the stator and connectable to a camshaft,multiple webs being provided on the stator and dividing an annular space between the stator and the rotor into a plurality of pressure chambers;the rotor including a plurality of vanes extending radially outwardly and dividing the pressure chambers into two groups of working chambers of a different operating direction, inflowing or outflowing pressure medium applicable in a pressure medium circuit to the two groups of working chambers; anda central locking device for locking the rotor in a central locking position with respect to the stator;the central locking device including at least two spring-loaded locking pins lockable in a stator-fixed locking gate, in a receiving chamber, the pins locking in the locking gate from different directions during a rotation of the rotor from the direction of an “advance” or “retard” stop direction ...

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Номер записи: 66
06-04-2017 дата публикации

APPARATUS AND METHOD OF CONTROLLING ELECTRONIC CONTINUOUSLY VARIABLE VALVE TIMING

Номер: US20170096918A1
Автор: Kim Lae Kyeom, Kim Nam Kyu
Принадлежит:

An apparatus and method of controlling an electronic continuously variable valve timing (CVVT) is provided. The apparatus includes a sensor disposed in a motor facing a reducer and an intelligent motor controller. The sensor determines a rotation speed of a first and second projection of a first and second rotation member and generates a sensing signal that corresponds to an output waveform of each rotation speed and inputs the signal to an intelligent motor controller coupled to the motor. The intelligent motor controller receives the signal and separates a crank shaft and cam shaft position signal. The signals are compared to detect an actual phase angle of the suction or exhaust valve. A phase deviation between the detected, actual and predetermined target phase angle is calculated. 1. An apparatus for controlling an electronic continuously variable valve timing (CVVT) comprising:a motor and a reducer, configured to adjust a relative rotation phase of a cam shaft that rotates with a crank shaft of a combustion engine to adjust a valve timing of a suction valve or an exhaust valve;a sensor disposed in a border of a side of the motor facing the reducer configured to determine a rotation speed of a first projection of a first rotation member which is coupled to the crank shaft to rotate;a second projection of a second rotation member having a rotation speed configured to be determined by the sensor which is gear-coupled to the first rotation member at a certain gear ratio and is coupled to the cam shaft to rotate,wherein the sensor is configured to generate a sensing signal that corresponds to an output waveform which corresponds to each of the rotation speeds, and configured to output the sensing signal;an intelligent motor controller coupled to the motor and configured to receive the sensing signal from the sensor;a crank shaft position signal configured to be separated by the intelligent motor controller, corresponds to a rotation of the first projection and a ...

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Номер записи: 67
06-04-2017 дата публикации

ELECTROMAGNETIC ACTUATOR WITH MOBILE MAGNET

Номер: US20170098988A1
Автор: BARBET Frédéric
Принадлежит: F.Q.N.K

An electromagnetic actuator is provided in which a mobile member is designed to slide inside a ferromagnetic frame along a displacement axis X-X′ between two end positions, when exposed to a magnetic flux circulating in said frame. The frame forms a magnetic circuit that extends in a single loop interrupted by two air gaps, each placed on the displacement axis of the mobile member. At the air gaps the flux generates two transverse magnetic fields in opposite directions. The mobile member includes a permanent magnet, polarized in a pre-determined direction and having an axial dimension such that in each end position, one end of the magnet extends into one of the air gaps and the opposite end of the magnet extends into the other air gap. 1. Electromagnetic actuator in which a mobile member is designed to slide inside a ferromagnetic frame along a displacement axis X-X′ between two end positions when exposed to a magnetic flux circulating in said frame ,wherein the said frame forms a magnetic circuit with a single loop interrupted by two air gaps each arranged on the said axis of displacement of the mobile member, so that the magnetic flux circulates in a single loop in the frame so that two magnetic fields of opposite direction are generated in the air gaps, with each magnetic field extending transversely to the said pre-determined axis of displacement,and wherein the mobile member comprises a permanent magnet, polarized in a pre-determined direction and having an axial dimension such that in each end position, one end of the magnet extends into but not beyond one of the air gaps and the opposite end of the magnet extends into but not beyond the other air gap.2. Actuator according to claim 1 , wherein the frame comprises two U-shaped modules placed opposite each other and around the mobile member claim 1 , each module comprising a longitudinal wall extended at the ends by transverse walls claim 1 , with the end surfaces of the transverse walls located on the same ...

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Номер записи: 68
12-04-2018 дата публикации

PNEUMATIC ACTUATOR FOR AN ENGINE VALVE

Номер: US20180100413A1
Автор: CARLSON Urban, Höglund Anders
Принадлежит:

Disclosed is an actuator for axial displacement of an object, including a cylinder volume having a first portion, and an actuator piston disc displaceable in the axial direction in the cylinder volume between inactive and active positions, an inlet channel between a pressure fluid inlet and the first portion of the cylinder volume, a first inlet valve body in the inlet channel, an outlet channel between the first portion of the cylinder volume and a pressure fluid outlet, and an outlet valve body in the outlet channel. The slave piston is displaceable in a bore, the slave piston displacing the first inlet valve body to an active position, and interacting with an opening connecting the bore and a control pressure channel, the opening having a first flow area with the slave piston in its inactive position and a larger second flow area with the slave piston in its active position. 1. Actuator for axial displacement of an object , the actuator comprises:{'b': '5', 'an actuator piston disc (),'}{'b': 5', '6', '7, 'a cylinder volume, wherein the actuator piston disc () separates said cylinder volume in a first portion () and a second portion () and is in axial direction displaceable back and forth in said cylinder volume between an inactive position and an active position,'}{'b': 11', '12', '6, 'an inlet channel () extending between a pressure fluid inlet () and the first portion () of the cylinder volume,'}{'b': 15', '11, 'a first inlet valve body () arranged in said inlet channel (),'}{'b': 13', '6', '14, 'an outlet channel () extending between the first portion () of the cylinder volume and a pressure fluid outlet (), and'}{'b': 37', '13, 'an outlet valve body () arranged in said outlet channel (), wherein'}{'b': 1', '17', '18', '17', '15', '11', '17', '28', '18', '29', '28', '1', '17', '2', '17', '2', '1, 'the actuator () comprises a slave piston () that is displaceable back and forth in a bore () between an inactive position and an active position, the slave piston ...

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Номер записи: 69
23-04-2015 дата публикации

ELECTROMAGNETIC VALVE APPARATUS WITH NONLINEAR SPRING

Номер: US20150108381A1
Автор: FISKE Orlo James, OKCUOGLU Murat, PADEN Bradley E., PADEN Brian A., PADEN David B., RICCI Michael R.
Принадлежит:

An electromagnetic valve apparatus with nonlinear springs for variable valve timing in an internal combustion engine. The apparatus includes a valve, floating spring assembly, translational cam, and motor. The cam and spring serve to minimize lash and valve stem bending forces. During opening and closing of the valve, spring potential energy is converted into valve kinetic energy and then back into potential energy at the end of the motion. The potential energy is then available for the next opening/closing event. The motor initiates motion, replaces friction and vibration losses, and terminates motion. However, the motor supplies minimal energy as the valve opens and closes, and vice-versa, naturally due to combined effects of system inertia and the nonlinear spring. In addition to valve control, the apparatus may be applied to fuel injectors, or any reciprocating linear or rotary mechanism where electronic control is used. 1. An electromagnetic valve apparatus , said apparatus comprising:a valve stem having a longitudinal axis, said valve stem including a valve located on an end thereof;a motor providing displacement of said valve stem;a spring mechanism symmetrically providing force for translation to said valve, said spring mechanism being pivotably attached to a stationary section, said force providing positive contact pressure to said valve stem between a fully open position of said valve and a fully closed position of said valve;a first reduced force point corresponding to said fully open position and at which said force acts upon said valve stem to maintain said fully open position; anda second reduced force point corresponding to said closed position and at which said force acts upon said valve stem to maintain said fully closed position.2. The apparatus as claimed in claim 1 , further including a translational cam located between said motor and said valve claim 1 , at least two followers movably engaging said translational cam claim 1 , and said force ...

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Номер записи: 70
13-04-2017 дата публикации

CAMSHAFT THRUST BEARING LUBRICATION SYSTEM

Номер: US20170101909A1
Автор: Adam Paul John, Beyer Theodore, Crowe Jonathan Denis, LaCroix Jon Michael, Patanis Chuck Joseph
Принадлежит:

Methods and systems are provided for regulating oil flow to advance and retard chambers of a variable cam timing (VCT) system and to a thrust bearing of a camshaft via an oil control valve. In one example, an oil control valve may be housed within a cam journal cap the cam journal cap comprising a thrust bearing for receiving and retaining a camshaft. The cam journal cap may include a vertical bore configured to house the control valve, where the vertical bore may include a first port for receiving oil from an oil pump, a second port for flowing oil to an advance chamber of a VCT system, a third port for flowing oil to a retard chamber of the VCT system, a fourth port, coupled to the thrust bearing for flowing oil thereto, and a drain port for flowing oil to an oil sump. 1. A cam journal cap comprising:a thrust bearing coupled to a camshaft;a vertical bore housing a control valve, the control valve regulating oil received from an oil pump to control a position of the camshaft;a port positioned in the vertical bore and coupled to the thrust bearing to supply oil thereto; anda drain port positioned in the vertical bore above the port and coupled to an oil sump.2. The cam journal cap of claim 1 , further comprising claim 1 , a semicircular recess within a bottom face of the journal cap for covering the camshaft claim 1 , where the thrust bearing comprises a groove within said semicircular recess.3. The cam journal cap of claim 1 , wherein the vertical bore forms a housing of the control valve claim 1 , and where the control valve includes a spool claim 1 , movable within a body of the control valve for adjusting oil flow through the valve.4. The cam journal cap of claim 3 , wherein each of the port and the drain port are vertically below a bottom end of the spool and body of the control valve.5. The cam journal cap of claim 1 , wherein the port and the drain port are disposed at diametrically opposed angular positions.6. The cam journal cap of claim 1 , wherein the ...

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Номер записи: 71
04-04-2019 дата публикации

REGENERATIVE VALVE HYDRAULIC ACTUATOR

Номер: US20190101031A1
Автор: RABHI Vianney
Принадлежит:

A regenerative valve hydraulic actuator includes a high-pressure accumulator fed by a high-pressure feed hydraulic pump, an actuator defining an actuator hydraulic chamber for actuating—by way of a progressive lever arm ratio lever—a valve provided with a valve return device, a valve lifter hydraulic valve placed between the high-pressure accumulator and the actuator hydraulic chamber, a lifter check valve which connects a low-pressure accumulator to the actuator hydraulic chamber, a valve closure hydraulic valve placed between the chamber and a closure and regeneration hydraulic motor which recovers energy previously invested to open the valve. 1110010110210310410110310410510610710610710510811. Regenerative valve hydraulic actuator () for a reciprocating piston compressor or engine () which comprises at least one piston () connected to transmission means () to reciprocate in a cylinder () closed by a compressor or engine cylinder head () , said piston () , said cylinder () and said cylinder head () forming a compression or combustion chamber () into which opens at least one intake line () and at least one exhaust or discharge line () , one or both of said two lines ( , ) being connected to said chamber () by a line orifice () that a valve () can block when it rests on a valve seat () the regenerative valve hydraulic actuator comprising:{'b': 2', '3', '4', '46', '47', '3', '5', '48, 'At least one high-pressure hydraulic feed pump () that can admit a hydraulic fluid () from a low-pressure accumulator () or a fluid tank () via a low-pressure feed line () to discharge said fluid () to a high-pressure accumulator () via a high-pressure feed line ();'}{'b': 6', '25', '49', '25', '104', '25', '49', '26', '7', '26', '9', '8', '9', '7', '3', '26', '8', '11, 'At least one actuator () which comprises an actuator cylinder () capped by an actuator cylinder head (), said cylinder () being attached directly or indirectly to the compressor or engine cylinder head () whereas said ...

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Номер записи: 72
04-04-2019 дата публикации

CONTROL DEVICE FOR MULTI-CYLINDER ENGINE

Номер: US20190101064A1
Автор: EZUMI Keitaro, Hasegawa Tomohiro, HASHIGUCHI Tadasu, Hidaka Masatoshi, INOUE Atsushi, KUMAKURA Kazufumi, KUSUNOKI Tomokuni, Matsumoto Kota, NISHIDA Masami, Sueoka Masanari, TAKAGI Akitomo, Takahashi Toshiaki, TAKEMOTO Kazuhiro
Принадлежит: MAZDA MOTOR CORPORATION

Disclosed is a control device for a multi-cylinder engine having a combustion chamber () to which an intake port () and an exhaust port () are connected. The control device comprises: an intake-side variable valve operating mechanism () for controlling a lift timing of two intake valves () of the intake port (); an exhaust-side variable valve operating mechanism () for controlling a lift timing of an exhaust valve (); and an exhaust-side valve operating mechanism () for driving an exhaust valve () at a fixed timing. The control device is operable, when executing cylinder deactivation in a low engine load and low engine speed operating range, to cause the exhaust-side variable valve operating mechanism () to open the exhaust valve () during downward movement of a piston () in a cylinder () being subjected to the cylinder deactivation. 1. A control device for a multi-cylinder engine , comprising:an intake port;an intake valve provided correspondingly to the intake port;an exhaust port;an exhaust valve provided correspondingly to the exhaust port; anda combustion chamber to which the intake port and the exhaust port are connected,wherein the control device is operable to be able to execute a cylinder deactivation in which a fuel injection is stopped in at least one specific cylinder in the multi-cylinder engine, andwherein, when the cylinder deactivation of the at least one specific cylinder is executed, the control device is operable to suppress a lift of the intake valve of the said cylinder in an intake stroke, and to open the exhaust valve of the said cylinder.2. A control device for a multi-cylinder engine , comprising:a plurality of intake ports;a plurality of intake valves each provided correspondingly to a respective one of the plurality of intake ports;a plurality of exhaust ports;a plurality of exhaust valves each provided correspondingly to a respective one of the plurality of exhaust ports;a combustion chamber to which the plurality of intake ports and the ...

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Номер записи: 73
04-04-2019 дата публикации

FLUID SYSTEM

Номер: US20190101220A1
Автор: CHEN Hsuan-Kai, Huang Chi-Feng, Lee Wei-Ming, Mou Hao-Jan
Принадлежит: Microjet Technology Co., Ltd.

A fluid system includes a fluid active region, a fluid channel, a convergence chamber and plural valves. The fluid active region includes at least one fluid-guiding unit enabled to transport fluid and the fluid is discharged out through an outlet aperture of the fluid active region. The fluid channel is in communication with the outlet aperture, and includes plural branch channels. The convergence chamber is in communication with the fluid channel. Each valve includes a base, a piezoelectric actuator and a linking bar. When the piezoelectric actuator is enabled, the carrier plate is driven to move, and the stopping part of the linking bar is correspondingly moved to selectively close or open an outlet of the base. Each valve is disposed in the corresponding branch channel, and the fluid is selectively transported through the branch channels under control of the on/off states of the valves disposed therein. 1. A fluid system produced by an integrated process , comprising: at least one fluid-guiding unit enabled to transport fluid; and', 'at least one outlet aperture through which the fluid is discharged out;, 'a fluid active region comprisinga fluid channel in communication with the at least one outlet aperture of the fluid active region, the fluid channel comprising plural branch channels for splitting the fluid discharged from the fluid active region to achieve a required amount of the fluid to be transported;a convergence chamber in fluid communication with the fluid channel for allowing the fluid to be accumulated in the convergence chamber; a base comprising a first passage and a second passage separated from each other, the first passage and the second passage being in communication with the corresponding branch channel, wherein a cavity is concavely formed on a surface of the base, and the cavity comprises a first outlet in communication with the first passage and a second outlet in communication with the second passage;', 'a piezoelectric actuator comprising: ...

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Номер записи: 74
21-04-2016 дата публикации

GAS EXCHANGE VALVE ACTUATOR FOR AXIAL DISPLACEMENT OF A GAS EXCHANGE VALVE OF A COMBUSTION ENGINE

Номер: US20160108777A1
Автор: Höglund Anders
Принадлежит:

An actuator for axial displacement of a gas exchange valve of a combustion engine is configured to be connected to a pressure fluid source and a pressure fluid sink, respectively, and to be driven by a gaseous pressure fluid and includes an actuator piston including an actuator piston disc and an actuator piston rod projecting therefrom in the axial direction, a cylinder volume, the disc separating the cylinder volume into a first part and a second part and being displaceable back and forth in the axial direction in the cylinder volume between an inactive position and an active position, the first part being configured for controllable fluid communication with the pressure fluid source and the pressure fluid sink, respectively, and a hydraulic circuit includes a chamber, the free end of the rod being arranged therein, wherein the rod is displaceable back and forth in the axial direction in a channel. 31612. The gas exchange valve actuator according to claim 2 , wherein the inlet valve body () is biased by means of a spring in a direction closing the inlet channel ().4221417. The gas exchange valve actuator according to claim 2 , wherein the ventilation groove () is connected to the outlet channel () downstream the outlet valve body ().51820182118. The gas exchange valve actuator according to claim 2 , wherein the hydraulic circuit comprises said chamber () claim 2 , a check valve () configured to admit a flow of hydraulic liquid to the chamber () and a hydraulic valve () configured to control a flow of hydraulic liquid from the chamber ().621. The gas exchange valve actuator according to claim 5 , wherein the hydraulic valve () comprises a hydraulic valve body that is displaceable back and forth between a closed position and an open position claim 5 , the hydraulic valve body being biased by means of a spring in the direction away from the closed position thereof.716. The gas exchange valve actuator according to claim 6 , wherein the inlet valve body () and the ...

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Номер записи: 75
21-04-2016 дата публикации

VALVE-TIMING CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

Номер: US20160108778A1
Автор: IWASE Yosuke, KAJIURA Mikihiro
Принадлежит: Hitachi Automotive Systems, Ltd.

A valve-timing control apparatus includes an electric motor; a speed-reduction mechanism configured to reduce a rotational speed of the output shaft of the electric motor; a slip ring provided on a surface of a tip portion of the electric motor; a cover member provided to cover at least a part of the surface of the tip portion of the electric motor; a power-feeding brush disposed in the cover member and being in contact with the slip ring; and an angle sensing mechanism configured to sense a rotational angle of the output shaft of the electric motor. The angle sensing mechanism includes a detected portion attached to the output shaft of the electric motor, and a detecting portion attached to the cover member and opposed to the detected portion. The power-feeding brush is located so as not to overlap with the detected portion in a vertically-upper direction from the detected portion. 1. A valve-timing control apparatus for an internal combustion engine , wherein an operating characteristic of an engine valve is varied by varying a relative rotational position between a first member and a second member , the valve-timing control apparatus comprising:an electric motor configured to rotate the second member relative to the first member by rotating an output shaft of the electric motor;a speed-reduction mechanism configured to reduce a rotational speed of the output shaft of the electric motor and to transmit a reduced rotation of the output shaft to the second member such that the second member is rotated relative to the first member;a slip ring provided on a surface of a tip portion of the electric motor;a cover member provided to cover at least a part of the surface of the tip portion of the electric motor;a power-feeding brush disposed in the cover member such that the power-feeding brush is in contact with the slip ring; andan angle sensing mechanism configured to sense a rotational angle of the output shaft of the electric motor, a detected portion attached to the ...

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Номер записи: 76
30-04-2015 дата публикации

CONTROL VALVE

Номер: US20150114328A1
Автор: Campuzano Jorge A., Huerta Rolando, Vukovich William P.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A control valve includes a valve body, which defines first, second, and third valve passageways. The valve body also defines a supply passageway. The control valve includes a first spool movable relative to the valve body between first and second positions. The control valve includes a second spool movable relative to the valve body between open and closed positions. The supply passageway is in fluid communication with the first valve passageway when the first spool is in the first position. The supply passageway is in fluid communication with the second valve passageway when the first spool is in the second position. The supply passageway is in fluid communication with the third valve passageway when the second spool is in the open position. The second spool precludes fluid flow between the supply passageway and the third valve passageway when the second spool is in the closed position. 1. A control valve , comprising:a valve body extending along a longitudinal axis, wherein the valve body defines a first valve passageway, a second valve passageway, a third valve passageway, and a supply passageway;a first spool movably disposed in the valve body, wherein the first spool is movable relative to the valve body along the longitudinal axis between a first position and a second position; anda second spool movably disposed in the valve body, wherein the second spool is movable relative to the valve body along the longitudinal axis between an open position and a closed position;wherein the supply passageway is in fluid communication with the first valve passageway when the first spool is in the first position, with the second valve passageway when the first spool is in the second position, and with the third valve passageway when the second spool is in the open position; andwherein the second spool precludes fluid flow between the supply passageway and the third valve passageway when the second spool is in the closed position.2. The control valve of claim 1 , wherein the ...

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Номер записи: 77
10-07-2014 дата публикации

SYSTEMS AND METHODS FOR VARIABLE VALVE ACTUATION

Номер: US20140190429A1
Автор: Khajepour Amir, Pournazeri Mohammad
Принадлежит:

The disclosure is directed at a valvetrain actuation (VA) system for an engine comprising at least two hydraulic rotary valves connected to an engine crankshaft, at least one hydraulic actuator driven by the at least two hydraulic rotary valves, and a high pressure hydraulic fluid source for supplying hydraulic fluid to one of the at least two hydraulic rotary valves, wherein movement of the at least two hydraulic rotary valves by the engine crankshaft allows hydraulic fluid to flow to the at least one hydraulic actuator to actuate an engine valve. 1. A valvetrain actuation (VA) system for an engine comprising:at least two hydraulic rotary valves connected to an engine crankshaft;at least one hydraulic actuator driven by the at least two hydraulic rotary valves; anda high pressure hydraulic fluid source for supplying hydraulic fluid to one of the at least two hydraulic rotary valves;wherein movement of the at least two hydraulic rotary valves by the engine crankshaft allows hydraulic fluid to flow to the at least one hydraulic actuator to actuate an engine valve.2. The VA system of wherein a second of the at least two hydraulic rotary valves receives hydraulic fluid from the at least one hydraulic actuator.3. The VA system of wherein the hydraulic rotary valves are rotary spool valves.4. The VA system of further comprising an oil reservoir for receiving the hydraulic fluid from the second hydraulic rotary valve.5. The VA system of wherein the oil reservoir is connected with the high pressure hydraulic fluid source via a hydraulic pump.6. The VA system of further comprising individual phase shifters between the engine and the at least two hydraulic rotary valves.7. The VA system of wherein the phase shifter is a differential gearbox.8. The VA system of wherein the differential gearbox is driven by an electronic motor.9. The VA system of further comprising a lift controller for controlling hydraulic pressure of the hydraulic fluid source to adjust a lift of the engine ...

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Номер записи: 78
02-04-2020 дата публикации

Electromagnetic valve drive device

Номер: US20200102861A1
Автор: Atsushi Ogawa, Kengo Nomura, Motoaki Kato
Принадлежит: Keihin Corp

An electromagnetic valve drive device includes: a state detection unit configured to detect an on-state or an off-state of a first switch and a second switch forming a boosting circuit; a boosting control unit configured to control a boosting operation, by performing a synchronous rectification control on switching of the first switch and the second switch, depending on the state of the first switch or the second switch detected by the state detection unit; and a drive circuit configured to drive an electromagnetic valve by supplying a voltage boosted by the boosting operation to the electromagnetic valve.

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Номер записи: 79
27-04-2017 дата публикации

Piston assembly retainer with integrated spring seat

Номер: US20170114679A1
Автор: Béla Hofer, Donald J. Dixon, Kevin Sittner, Todd Simcina
Принадлежит: Schaeffler Technologies AG and Co KG

A piston assembly for pressurizing a hydraulic chamber is provided. The piston assembly has a cylinder and a piston configured to reciprocate within the cylinder. The piston has a first end in the cylinder and a second end adapted to be acted on by a drive element. The piston assembly also has a spring configured to bias the piston. The piston assembly further has a retainer mounted to an exterior of the cylinder and including a seat surface. The spring is seated on the seat surface. The outer diameter of the spring is less than the outer diameter of the cylinder.

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Номер записи: 80
27-04-2017 дата публикации

METHOD AND SYSTEM FOR ENGINE CONTROL

Номер: US20170114739A1
Автор: Glugla Chris Paul
Принадлежит:

Methods and systems are provided for coordinating cylinder deactivation adjustments with changes to individual cylinder piston displacement. In doing do, the benefits of variable displacement and variable compression ratio may be synergized. An engine can be operated with some cylinders deactivated while active cylinders operate with knock addressed while spark timing is at MBT for a longer duration. 1. A method for an engine , comprising:selectively deactivating one or more engine cylinders based on engine load; andadjusting a piston displacement to vary a compression ratio of active engine cylinders to maintain spark timing of the engine at a peak torque timing while maintaining the one or more cylinders deactivated.2. The method of claim 1 , wherein the adjusting includes claim 1 , while maintaining spark timing at the peak torque timing claim 1 , adjusting the piston displacement to reduce the compression ratio from a higher threshold compression ratio as an indication of knock increases.3. The method of claim 2 , further comprising claim 2 , reducing the compression ratio while maintaining the spark timing at the peak torque timing responsive to knock until a lower threshold compression ratio is reached claim 2 , and responsive to a further indication of knock claim 2 , retarding spark timing while maintaining the compression ratio at the lower threshold.4. The method of claim 3 , further comprising claim 3 , retarding spark timing responsive to the further indication of knock until a fuel usage amount is higher than a threshold amount claim 3 , and then reactivating a deactivated cylinder claim 3 , resuming spark timing at the peak torque timing in the active cylinders claim 3 , and raising the compression ratio of the active cylinders to or towards the higher threshold compression ratio.5. The method of claim 3 , wherein the adjusting includes claim 3 , retarding spark timing responsive to the further indication of knock until spark timing reaches a threshold ...

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Номер записи: 81
07-05-2015 дата публикации

BIASED NORMALLY OPEN CHECK VALVE ASSEMBLY

Номер: US20150122340A1
Автор: Edelmayer Thomas C.
Принадлежит:

A biased normally open check valve assembly for facilitating Multiair® engine start-up after extended periods of non-use. The check valve is biased in an open position and allows for the ventilation of air out of the system so that the engine can start. The check valve also comprises a metering groove in a valve seat. The metering groove is configured to allow a controlled flow of hydraulic fluid through the check valve when the check valve is in a closed position. 1. A check valve assembly for facilitating engine start-up , the check valve assembly comprising:a body with a valve inlet, valve outlet, valve seat, and valve opening; anda metering groove in the valve seat, the metering groove configured to allow a controlled flow of hydraulic fluid through the check valve assembly when the check valve assembly is in a closed position,wherein the check valve assembly is biased in a normally open position, allowing air to flow through the check valve assembly and out the valve outlet, until hydraulic fluid enters the valve inlet and causes the check valve assembly to move into the closed position.2. The check valve assembly of claim 1 , wherein the check valve assembly further comprises an anti-siphoning umbrella valve at the valve outlet for preventing air and hydraulic fluid from entering the check valve assembly through the valve outlet.3. The check valve assembly of claim 2 , wherein the anti-siphoning umbrella valve also prevents hydraulic fluid from exiting the check valve assembly at the valve outlet when the engine is off.4. The check valve assembly of claim 1 , wherein the check valve assembly further comprises a check ball which is operable to engage the valve seat.5. The check valve assembly of claim 4 , wherein the check ball is connected to one end of a biasing spring and the other end of the spring is connected to a spring seat disposed against the valve seat.6. The check valve assembly of claim 5 , wherein the spring seat is concentric with a valve opening ...

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Номер записи: 82
18-04-2019 дата публикации

RECIPROCATING-PISTON MACHINE

Номер: US20190112951A1
Автор: Gelter Jürgen, Zurk Andreas
Принадлежит:

The invention relates to a reciprocating-piston machine, comprising a valve actuation device for at least one gas exchange valve, at least one valve stroke transmission device, which has at least one valve stroke transmission element, which is arranged between the gas exchange valve and the camshaft and which is mounted for movement between a first Position associated with a closed Position of the gas exchange valve and a second Position associated with an open position of the gas exchange valve, at least one halting device having a halting element mounted for movement between an actuation position and a release position in a machine housing or a housing-fixed component parallel to a guiding surface of the first valve stroke transmission element that the halting element at least shows the displacement motion of the first valve stroke transmission element and releases said displacement motion in the release position. 1. Reciprocating-piston machine comprising a valve actuation device for at least one gas exchange valve , at least one valve stroke transmission device which has at least one first valve stroke transmission element , which is arranged between the gas exchange valve and the camshaft and which is mounted for movement between a first position associated with a closed position of the gas exchange valve and a second position associated with an open position of the gas exchange valve , and at least one retaining device having a retaining element is arranged in such a way that the retaining element is mounted for movement between an actuation position and a release position in a machine housing—in particular a cylinder head—or a housing-fixed component parallel to a guide surface of the first valve stroke transmission element in such a way that , in its actuation position , it at least retards the displacement movement of the first valve stroke transmission element in the direction of the second position and releases it in the release position , wherein the ...

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Номер записи: 83
18-04-2019 дата публикации

High Speed Valve

Номер: US20190113147A1
Автор: Kisil Victor, Pogrebinsky Vladymyr
Принадлежит: AUTOMOTIVE TECHNOLOGIES INTERNATIONAL, INC.

Valve including a valve body having a drain hole, a valve seat including an outlet union from which fluid flows out of the valve, a cup coupled to the valve body and biased against the valve seat, an input union, and a control valve arranged partly inside the valve seat. The control valve defines a compartment and including an actuator, a permanent magnet and first and second electromagnets. The actuator includes a slide arranged in the compartment and that closes the drain hole when in a first position and is spaced apart from the drain hole when in a second position, and an armature. Providing current to the first electromagnet cause the slide to move to the second position separated from the drain hole and causing movement of the cup apart from the valve seat and thus flow of fluid from the input union to the outlet union. 1. A valve , comprising:a valve housing including an input portion through which fluid flows into said valve housing, a valve seat including an outlet portion through which fluid flows out of said valve housing, at least one relief channel, and a drain hole;a cup biased against said valve seat and arranged in said valve housing to define a first cavity inside said cup in flow communication with said at least one relief channel and a second cavity adjacent and external of said cup, a third cavity being defined by said input portion, said valve housing including at least one supply channel between said second cavity and said third cavity; anda control valve arranged partly inside said valve housing, said control valve defining a compartment and including an actuator, a permanent magnet and first and second electromagnets, said compartment being in flow communication with said at least one relief channel, said actuator including a slide arranged in said compartment and that closes said drain hole when in a first position and is spaced apart from said drain hole when in a second position, and an armature;the valve being configured to have a closed ...

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Номер записи: 84
03-05-2018 дата публикации

ACTUATOR FOR AXIAL DISPLACEMENT OF AN OBJECT

Номер: US20180119583A1
Автор: CARLSON Urban, Höglund Anders
Принадлежит:

Disclosed is an actuator including a cylinder volume having a first portion, and an actuator piston disc displaceable in the cylinder between inactive and active positions, an inlet channel between a pressure fluid inlet and the first portion of the cylinder volume, a first inlet valve body in the inlet channel, an outlet channel between the first portion of the cylinder volume and a pressure fluid outlet, and an outlet valve body in the outlet channel. The slave piston is displaceable in a bore between inactive and active positions. The first inlet valve body includes a seat valve body having an inactive position closing the inlet channel, the slave piston, in moving from inactive to active positions, rams the first inlet valve body, displacing it to an active position at which the inlet channel is open, the outlet valve body being connected to and jointly displaceable with the slave piston. 21911955. The actuator according to claim 1 , wherein the actuator () comprises a second inlet valve body () arranged in said inlet channel () claim 1 , the second inlet valve body () being rigidly connected to the actuator piston disc () and jointly displaceable with the actuator piston disc () between an inactive position and an active position.385598. The actuator according to claim 2 , wherein an actuator piston rod () is rigidly connected to and axially extending form the actuator piston disc () claim 2 , and together with the actuator piston disc () form an actuator piston claim 2 , said second inlet valve body () constituting part of said actuator piston rod ().49119. The actuator according to claim 2 , wherein the second inlet valve body () is configured to admit fluid flow in the inlet channel () when the second inlet valve body () is located in the inactive position.59119. The actuator according to claim 4 , wherein the second inlet valve body () is configured to prevent fluid flow in the inlet channel () when the second inlet valve body () is located at least a ...

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Номер записи: 85
04-05-2017 дата публикации

CAMSHAFT PHASER SYSTEMS AND METHOD OF COMMUTATING AN ELECTRIC MOTOR FOR THE SAME

Номер: US20170122137A1
Автор: Brown Daniel
Принадлежит:

A system () including a phaser (), a motor (), and a controller () for controlling the phase between a camshaft () and a crankshaft () of an engine (). The phaser () is attached to the camshaft (), is in communication with the crankshaft (), and is configured to adjust the phase of the camshaft (). The motor () actuates the phaser () and is operatively attached to and in communication with the phaser () such that rotation of the crankshaft () back-drives the motor () to subsequently generate a signal. The controller () is in electrical communication with the motor (), is responsive to the signal, and uses the signal to determine the rotational speed of the motor () to thereby commutate the motor () and subsequently drive the motor () so as to actuate the phaser () and control the phase of the camshaft (). 1182842181610. A camshaft () phaser () system () for use in controlling the phase between a camshaft () and a crankshaft () of an internal combustion engine () , said system comprising:{'b': 28', '18', '16', '18', '16, 'a phaser () operatively attached to the camshaft () and in rotational communication with the crankshaft () for adjusting the phase of the camshaft () with respect to the crankshaft ();'}{'b': 38', '28', '38', '28', '16', '38', '38, 'an electric motor () that actuates said phaser (), said electric motor () operatively attached to and in rotational communication with said phaser () such that rotation of the crankshaft () back-drives said electric motor () and said electric motor () generates a signal; and'}{'b': 40', '38', '40', '38', '38', '28', '18, 'a controller () in electrical communication with said electric motor (), said controller () being responsive to said signal to thereby commutate said electric motor () and subsequently drive said electric motor () so as to actuate said phaser () and control the phase of the camshaft ().'}242384848404838. The system () as set forth in claim 1 , wherein said electric motor () includes a plurality of coils ...

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Номер записи: 86
25-04-2019 дата публикации

Valve train for the variable actuation of an inlet valve and an outlet valve,and internal combustion engine having a valve train of this type

Номер: US20190120093A1
Автор: Jonathan Lipp, Wolfgang FIMML
Принадлежит: MTU Friedrichshafen GmbH

A valve train for the variable actuation of an inlet valve and an outlet valve of a combustion chamber of an internal combustion engine, having a first operative connection between a valve actuating device and the inlet valve and a second operative connection between the valve actuating device and the outlet valve. The first operative connection and the second operative connection are assigned an interrupting element which is set up to temporarily interrupt the operative connections. The first operative connection and the second operative connection are connected to the same interrupting element in such a way that the first operative connection and the second operative connection can be interrupted temporarily by way of the interrupting element.

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Номер записи: 87
27-05-2021 дата публикации

CYLINDER HEAD ARRANGEMENT FOR VARIABLE VALVE ACTUATION ROCKER ARM ASSEMBLIES

Номер: US20210156284A9
Автор: Genise David Gerard, Radulescu Andrei Dan
Принадлежит:

A novel cylinder head arrangement for an in-line four cylinder or eight cylinder engine. A modified arrangement allows additional space for installation of wider rocker arm assemblies used for variable valve lift (VVL), cylinder deactivation (CDA) and other types of variable valve actuation (VVA). In one embodiment, cam towers adjacent the end two cylinders are not used. At least one end support is used, which may be an outboard bearing on a camshaft for each end. The wider rocker assemblies may then be installed. In another embodiment, cam towers adjacent the inner two cylinders are eliminated and a single camshaft support piece with a support bearing is installed between the inner cylinders to provide support for the camshafts. The wider rocker assemblies may then be installed on at least one of the middle cylinders. A novel oil control valve operates latches in switching rocker arm assemblies. 133.-. (canceled)34. An oil control system for providing rapid pressure changes sufficient to operate a latch pin in a variable valve actuation system , the oil control system comprising:{'sub': '1', 'a first chamber adapted to receive oil flow at a pressure Pfrom an oil supply gallery;'}{'sub': '2', 'a control gallery having oil at a variable pressure P;'}a second chamber fluidically coupled to the control gallery;a third chamber adjacent the second chamber;a poppet valve controlling oil flow between the first and second chambers;a diaphragm between the second and third chambers directly coupled to the poppet valve and controlling the poppet valve to adjust the oil flow from the first chamber to the second chamber, wherein the diaphragm is configured to move the poppet valve to increase flow in response to a first force on a side of the diaphragm adjacent the third chamber exceeding a second force on a side of the diaphragm adjacent the second chamber;a bypass fluidically connecting the first and third chambers;a solenoid valve coupled to the bypass that selectively allows ...

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Номер записи: 88
23-04-2020 дата публикации

Engine Valve Lifters

Номер: US20200123939A1
Автор: Venkat S. SARATI
Принадлежит: Eaton Intelligent Power Ltd

An engine valve lifter assembly comprises a lifter body, a plunger assembly, and a spring. The lifter body comprises an oil control portion comprising an exterior surface, oil ports, and an interior oil chamber. A plunger interface end comprises an interior plunger chamber and a second spring seat. Selectively reciprocating plunger assembly comprises a piston end coupled to reciprocate in the oil chamber and a cam input end comprising a spring seat. A spring is biased between the spring seat and the second spring seat. The spring is configured to push the cam input end away from the plunger chamber. A sleeve is coupled around the oil control portion of the lifter body, and the sleeve is slidable between a lower position and an upper position to selectively block and unblock the oil ports.

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Номер записи: 89
19-05-2016 дата публикации

CYLINDER HEAD ARRANGEMENT FOR VARIABLE VALVE ACTUATION ROCKER ARM ASSEMBLIES

Номер: US20160138438A1
Автор: Genise David Gerard, Radulescu Andrei Dan
Принадлежит:

A novel cylinder head arrangement for an in-line four cylinder or eight cylinder engine. A modified arrangement allows additional space for installation of wider rocker arm assemblies used for variable valve lift (VVL), cylinder deactivation (CDA) and other types of variable valve actuation (VVA). In one embodiment, cam towers adjacent the end two cylinders are not used. At least one end support is used, which may be an outboard bearing on a camshaft for each end. The wider rocker assemblies may then be installed. In another embodiment, cam towers adjacent the inner two cylinders are eliminated and a single camshaft support piece with a support bearing is installed between the inner cylinders to provide support for the camshafts. The wider rocker assemblies may then be installed on at least one of the middle cylinders. A novel oil control valve operates latches in switching rocker arm assemblies. 1. A cylinder head assembly compatible with an engine having four adjacent cylinders , with a left end cylinder on a far left side of the engine , a right end cylinder on a far right side of the engine , and two middle cylinders , a left middle cylinder and a right middle cylinder , the cylinder head assembly comprising:at least one overhead camshaft passing over the four adjacent cylinders;an end support on the far left side of the engine supporting a first end of the at least one overhead camshaft;an end support on the far right of the engine supporting a second end of the at least one overhead camshaft; anda cam tower of at least one middle cylinder for supporting the at least one overhead camshaft,wherein a portion of the at least one overhead camshaft extending over the left end cylinder end cylinder is solely supported by the end support on the far left side of the engine and the cam tower of the at least one middle cylinder, and a portion of the at least one overhead camshaft extending over the right end cylinder is solely support by the end support on the far right ...

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Номер записи: 90
19-05-2016 дата публикации

A MECHANISM FOR EFFECTING A DISPLACEMENT OUTPUT

Номер: US20160138729A1
Автор: ALAM Hilaal, ISMAIL Mohamed Sirajudeen Mohamed
Принадлежит:

A mechanism for effecting a displacement output, the mechanism comprising: at least one flexural module, the at least one flexural module comprising: a frame; at least one component connected to the frame via a first flexure and connected to the displacement output via at least a second flexure; wherein the at least one flexural module is monolithic and/or unitary and each component is configured to be independently actuatable such that the displacement output is displaced when at least one component is actuated. 1. A mechanism for effecting a displacement output , the mechanism comprising: a frame;', 'at least one component connected to the frame via a first flexure and connected to the displacement output via at least a second flexure;', 'wherein the at least one flexural module is monolithic and/or unitary and each component is configured to be independently actuatable such that the displacement output is displaced when at least one component is actuated., 'at least one flexural module, the at least one flexural module comprising2. The mechanism of claim 1 , wherein the at least one component is configured to receive actuation from an actuator.3. The mechanism of claim 1 , wherein the at least one component comprises a displacement component configured to amplify displacement provided by a displacement actuator.4. The mechanism of claim 3 , wherein the displacement component comprises a bearing portion connected to the frame via the first flexure claim 3 , an input portion configured to receive actuation by the displacement actuator claim 3 , and an output portion configured to be connected via the at least a second flexure claim 3 , wherein distance between the output portion and the bearing portion is greater than the distance between the input portion and the bearing portion.5. The mechanism of claim 4 , wherein the output portion of the displacement component is configured to be connected to a second component.6. The mechanism of claim 4 , wherein the ...

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Номер записи: 91
03-06-2021 дата публикации

System and method for variable actuation of valves of an internal combustion engine

Номер: US20210164368A1
Автор: Chiara Altamura, Domenico Lepore, Marcello Gargano, Raffaele Ricco, Sergio Stucchi
Принадлежит: Centro Ricerche Fiat SCpA

In an internal combustion engine provided with an electro-hydraulic system for variable actuation of the intake valves of the engine, each cylinder has two intake valves, which are associated with two intake conduits and are controlled by a single cam of a camshaft through a single hydraulic circuit. The communication of the hydraulic actuators of the two intake valves with a discharge channel is controlled by two electrically-actuated control valves, both of an on/off two-position type, arranged in series with each other along a hydraulic line for communication between the a pressure volume and the discharge channel.

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Номер записи: 92
28-05-2015 дата публикации

ENGINE VALVE DEACTIVATION SYSTEM

Номер: US20150144081A1
Автор: Haynes Neil, Whiston Phil John
Принадлежит:

A system and method comprising four valves per cylinder of a multi-cylinder engine is provided to control cylinder intake and exhaust valves independently from other cylinders in response to engine operating conditions. The engine valve deactivation system for the engine may comprise two or more cylinders wherein each cylinder has two exhaust valves and two inlet valves. The system and method may allow for cylinder deactivation and/or high swirl to both be delivered. 1. An engine valve deactivation system for an engine comprising:two or more cylinders, each cylinder having two exhaust valves and two inlet valves;at least one cylinder of the engine being a deactivatable cylinder wherein each deactivatable cylinder has one inlet valve selectively deactivated by means of a first supply of pressurized fluid and both exhaust valves and the other one of the inlet valves are selectively deactivated by means of a second supply of pressurized fluid.2. The system of claim 1 , in which each cylinder further comprises a device to selectively deactivate a first one of the two inlet valves so as to keep the respective inlet valve closed claim 1 ,each deactivatable cylinder has respective deactivation devices to selectively deactivate both exhaust valves and a second one of the two inlet valves so as to keep the respective second inlet valve and both exhaust valves closed wherein a first electronically controlled valve is arranged to control the flow of pressurized fluid to the devices for deactivating the first inlet valve of each cylinder, a second electronically controlled valve is arranged to control the flow of pressurized fluid to the devices for deactivating the second inlet valve and both of the exhaust valves and an electronic controller is arranged to control the operation of the first and second electronically controlled valves.3. The system of claim 2 , wherein the electronic controller is operable in a first mode of operation to control the first electronically ...

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Номер записи: 93
30-04-2020 дата публикации

ROCKER ARM HAVING OIL RELEASE VALVE THAT OPERATES AS AN ACCUMULATOR

Номер: US20200131945A1
Автор: Andrisani Nicola
Принадлежит: Eaton Srl

An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode can include a rocker shaft and a rocker arm. The rocker shaft can define a pressurized oil supply conduit. The rocker arm can receive the rocker shaft and is configured to rotate around the rocker shaft. The rocker arm can have an oil supply passage defined therein. A valve bridge can engage a first exhaust valve and a second exhaust valve. An accumulator assembly can be disposed in the rocker arm and includes an accumulator piston that translates within the accumulator piston housing between closed and open positions. A predetermined amount of oil is stored in the accumulator assembly. 1. An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode , the exhaust valve rocker arm assembly comprising:a rocker shaft that defines a pressurized oil supply conduit;a rocker arm that receives the rocker shaft and is configured to rotate around the rocker shaft, the rocker arm having an oil supply passage and an accumulator piston housing defined therein;a valve bridge that engages a first exhaust valve and a second exhaust valve;a hydraulic lash adjuster assembly disposed on the rocker arm having a first plunger body movable between a first position and a second position, wherein in the first position, the first plunger body extends rigidly for cooperative engagement with the valve bridge;a check valve disposed on the rocker arm and having an actuator that selectively releases pressure in the hydraulic lash adjuster; andan accumulator assembly disposed in the rocker arm and including an accumulator piston that translates within the accumulator piston housing between closed and open positions, the accumulator assembly configured to store a predetermined amount of oil when the first plunger body moves toward the first position, wherein the accumulator assembly further comprises:an accumulator spring that biases the accumulator piston ...

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Номер записи: 94
14-08-2014 дата публикации

VALVE TIMING CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE

Номер: US20140224197A1
Автор: Kawada Shinichi, NEMOTO Hiroyuki, TADOKORO Ryo, YAMANAKA Atsushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A valve timing control system for an internal combustion engine, comprises: an electric intake valve timing control apparatus to vary an intake valve timing with torque produced by an electric motor with electric power supplied through a power supply mechanism; and an electric exhaust valve timing control apparatus to vary an exhaust valve timing with torque produced by an electric motor with electric power supplied through a power supply mechanism. A heat generating portion in the power supply mechanism of the intake valve timing control apparatus is made of a heat resisting material whereas a heat generating portion in the power supply mechanism of the exhaust valve timing control apparatus is made of a material lower in heat resistance than the heat resisting material of the intake valve timing control apparatus. 1. A valve timing control system for an internal combustion engine , comprising:an electric intake valve timing control apparatus provided for an intake camshaft, and arranged to vary an intake valve timing with an output torque of an electric motor which is included in the intake valve timing control apparatus, and which is constructed to produce a rotational force with electric power supplied through a power supply mechanism; andan electric exhaust valve timing control apparatus provided for an exhaust camshaft, and arranged to vary an exhaust valve timing with an output torque of an electric motor which is included in the exhaust valve timing control apparatus and which is constructed to produce a rotational is force with electric power supplied through a power supply mechanism;a heat generating portion in the power supply mechanism of the electric intake valve timing control apparatus being made of a heat resisting material whereas a heat generating portion in the power supply mechanism of the electric exhaust valve timing control apparatus is made of a material lower in heat resistance than the heat resisting material of the heat generating portion ...

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Номер записи: 95
26-05-2016 дата публикации

ENGINE BRAKE LASH ADJUSTER DEVICE AND METHOD

Номер: US20160146074A1
Автор: Lynch Bradford
Принадлежит:

A compression brake device and method are provided that include a lash member coupled to a rocker arm. The lash member has a first position that forces opening of the valve when the rocker arm is at the lower position. The brake also includes a lost motion cylinder at least partially defined within the rocker arm. The cylinder is biased towards a position of greatest internal displacement volume. The lost motion cylinder has a first operational mode wherein the lost motion cylinder permits compression thereof such that the ability of the rocker arm to open an exhaust valve is a function of the position of the lash member. The lost motion cylinder has a second operational mode wherein the lost motion cylinder retards compression thereof such that the ability of the rocker arm to open an exhaust valve is independent of the position of the lash member. 1. A compression brake including:a rocker arm pivotable about a rocker arm shaft to selectively force an exhaust valve to an open condition, the rocker arm having a lower position, an upper position, and a plurality of positions intermediate the lower and upper positions;a lash member coupled to the rocker arm, the lash member being configurable to define a plurality of positions relative to the rocker arm, the lash member having a first position that forces opening of the valve when the rocker arm is at the lower position, anda lost motion cylinder at least partially defined within the rocker arm, the cylinder biased towards a position of greatest internal displacement volume, the lost motion cylinder having a first operational mode wherein the lost motion cylinder permits compression thereof such that the ability of the rocker arm to open an exhaust valve is a function of the position of the lash member, the lost motion cylinder having a second operational mode wherein the lost motion cylinder retards compression thereof such that the ability of the rocker arm to open an exhaust valve is independent of the position of ...

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Номер записи: 96
04-06-2015 дата публикации

Electro-magnetic valve driver

Номер: US20150152820A1
Автор: Keita KOJIMA
Принадлежит: Denso Corp

An electromagnetic valve driver, in normal operation, supplies peak current from a capacitor to a coil of an injector by turning ON a transistor on a downstream side of the coil and a discharge transistor that discharges electricity from the capacitor to the coil. Thereafter, the driver supplies constant current to the coil by an ON-OFF control of a transistor disposed between a battery and an upstream side of the coil until an end of the electricity supply period. When an open failure of the discharge transistor is detected, the driver controls the current to prevent a voltage rise of the capacitor to reduce flyback energy collected from a downstream side of the coil by the capacitor based on a transistor OFF timing delay scheme, in which an OFF timing of a transistor is delayed by a preset delay time from a normal OFF timing thereof.

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Номер записи: 97
21-08-2014 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20140230762A1
Автор: Nakashima Toyokazu
Принадлежит:

An electronic control device for controlling an internal combustion engine reduces operation amounts of a high-pressure fuel pump and a vacuum pump, which are auxiliary devices driven by drive force of an intake camshaft, when a rotor of a variable valve timing mechanism is rotated to a lock phase in the phase advancing direction at the engine starting. Thus, the rotor rotates to the lock phase quickly and is fixed to the lock phase. 1. A control device for an internal combustion engine , comprising:a hydraulically-driven variable valve timing mechanism, which has a housing rotating in conjunction with rotation of a crankshaft and a rotor connected to a camshaft and which changes valve timing by changing a relative rotational phase of the rotor with respect to the housing by using a hydraulic pressure;a lock mechanism for fixing the relative rotational phase of the rotor with respect to the housing to a locked phase by inserting a lock pin into a lock hole; andan auxiliary device driven by drive force of the camshaft,wherein if the rotor is not fixed by the lock mechanism at the engine starting, the rotor is rotated to the lock phase in the phase advancing direction and the rotor is fixed by the lock mechanism, andan operation amount of the auxiliary device is reduced when the rotor is rotated to the lock phase in the phase advancing direction at the engine starting.2. The control device for an internal combustion engine according to claim 1 , whereina plurality of stepped portions having different depths are arranged on a bottom face of the lock hole such that the depths become deeper toward the lock phase, andthe lock mechanism is provided with a ratchet function such that when the rotor rotates in the housing, the rotor is rotated toward the lock phase in the phase advancing direction by sequentially fitting the lock pin in the stepped portions.3. The control device for an internal combustion engine according to claim 1 , wherein the control device rotates the ...

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Номер записи: 98
07-05-2020 дата публикации

COMBUSTION SYSTEMS AND METHODS

Номер: US20200141304A1
Автор: Bunjes Douglas David
Принадлежит:

Embodiments disclosed herein relate to internal combustion engines, combustion systems that include such internal combustion engines, and controls for controlling operation of the combustion engine. The internal combustion engine may include one or more mechanisms for injecting fuel, air, fuel-air mixture, or combinations thereof directly into one or more cylinders, and controls may operate or direct operation of such mechanisms. 1. A combustion system , comprising: one or more combustion chambers each of which includes one or more injection ports and an exhaust port;', 'one or more injectors each of which is in communication with a corresponding one of the one or more injection ports, each of the one or more injectors configured to inject at least an amount of air into a corresponding one of the one or more combustion chambers for a combustion reaction that produces a pressure increase within the corresponding one of the one or more combustion chambers;', 'one or more energy conversion mechanisms each of which is positioned within in a corresponding one of the one or more combustion chambers and configured to convert the pressure increase in the corresponding one of the one or more combustion chambers into mechanical energy;', 'an output shaft configured to move in response to the mechanical energy generated by the one or more energy conversion mechanisms; and', 'at least one exhaust valve in communication with the exhaust port of each of the one or more combustion chambers;', 'wherein the engine is devoid of at least one of a throttle body, a retainer, a cam lobe, a cam shaft, a timing belt, or a shim; and, 'an engine including determine the amount of the air, at least partially based on one or more inputs received by the controller, to inject into at least one combustion chamber of the one or more combustion chambers through the one or more injectors in communication with the at least one combustion chamber; and', 'actuate the one or more injectors in ...

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Номер записи: 99
09-06-2016 дата публикации

ENGINE BRAKING VIA ADVANCING THE EXHAUST VALVE

Номер: US20160160710A1
Автор: Joergl Volker, KELLER Philip S., Roth David B.
Принадлежит:

One variation may include a product including: an engine having at least one cylinder, the cylinder having at least one blowdown exhaust valve, at least one scavenging exhaust valve, and at least one intake valve, the engine further having a first actuator connected to the at least one blowdown exhaust valve and a second actuator connected to the scavenging exhaust valve and controller connected to one of the first or second actuator and adapted and configured to advance the timing of one of the blowdown or scavenging exhaust valves when the controller receives a braking signal. 1. A product comprising:an engine having at least one cylinder, the cylinder having at least one blowdown exhaust valve, at least one scavenging exhaust valve, and at least one intake valve, the engine further having a first actuator connected to the at least one blowdown exhaust valve and a second actuator connected to the scavenging exhaust valve anda controller connected to one of the first or second actuator and adapted and configured to advance the timing of one of the blowdown or scavenging exhaust valves when the controller receives a braking signal.2. A product as set forth in wherein one of the first or second actuators is a variable camshaft phaser.3. A product as set forth in wherein the first actuator comprises a first camshaft and a first rocker arm and wherein the second actuator comprises a second camshaft and rocker arm.4. A product as set forth in wherein the intake valve is connected to one of the first or second actuators.5. A product as set forth in wherein the intake valve is connected to a third camshaft and rocker arm.6. A product as set forth in wherein one of the first or second actuators is a solenoid.7. A product as set forth in wherein both the first and second actuators are variable camshaft phasers.8. A product for providing engine braking of an engine having at least one cylinder claim 1 , the at least one cylinder having at least one exhaust valve connected to ...

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Номер записи: 100