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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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Применить Всего найдено 1341. Отображено 100.
12-01-2012 дата публикации

Engine assembly with integrated exhaust manifold

Номер: US20120006287A1
Автор: Alan W. Hayman, Eric C. Douse, Robert S. McAlpine
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

An engine assembly may include an engine structure, exhaust valves supported by the engine structure and a camshaft supported by the engine structure and engaged with the exhaust valves. The engine structure may define first, second, third and fourth combustion chambers arranged in series and a plurality of exhaust ports, each in communication with a corresponding combustion chamber. The engine structure may also define a flange region defining a first exhaust gas outlet axially aligned with the second combustion chamber and a second exhaust gas outlet axially aligned with the third combustion chamber. The engine structure may define first and second exhaust passages that extend from the first and second exhaust ports, respectively, to the first exhaust gas outlet and third and fourth exhaust passages that extend from the third and fourth exhaust ports, respectively, to the second exhaust gas outlet.

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Номер записи: 1
22-03-2012 дата публикации

Engine that is Equipped with Variable Valve Device

Номер: US20120067312A1
Автор: Youngsoo Lee
Принадлежит: Hyundai Motor Co

An engine includes a hydraulic pressure lash adjuster (HLA) pivotally supporting an end of a swing arm and having a valve supporting the other end of the swing arm, wherein the hydraulic pressure lash adjuster includes a housing, a plunger of which one end portion thereof may be slidably inserted into the inside of the housing, the other end portion of which extends outwards and supports the end of the swing arm by selectively moving upwards or downwards in a length direction of the housing, a stopper pin slidably mounted in a chamber of the plunger so as to selectively lock the plunger to the housing such that the plunger cannot move in the housing, and a hydraulic pressure supply portion that selectively supplies one side of the stopper pin with a hydraulic pressure in the chamber of the plunger to move the stopper pin toward the housing.

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Номер записи: 2
12-04-2012 дата публикации

Positive control (desmodromic) valve systems for internal combustion engines

Номер: US20120085305A1
Автор: James M. Cleeves, Michael Hawkes, William H. Anderson
Принадлежит: Pinnacle Engines Inc

Various types of valve systems are disclosed herein. In one embodiment, a positive control reciprocating sleeve valve system for use with an internal combustion engine includes opening and closing rockers controlled by corresponding opening and closing cam lobes. In one aspect of this embodiment, interference can be designed into the valve control system to provide additional “hold-closed” force to hold the valve against its seat during a portion of the engine cycle. In another aspect of this embodiment, positive control valve systems can include compliant components and systems, hydraulic systems, pneumatic systems, and/or mechanical spring systems to control valve lash, facilitate sealing, etc.

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Номер записи: 3
16-08-2012 дата публикации

Variable valve lift mechanism fault detection systems and methods

Номер: US20120209494A1
Автор: Julian R. Verdejo, Kenneth J. Buslepp, Nicholas John Kalweit
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system for a vehicle includes a filtering module, an indicated mean effective pressure (IMEP) determination module, and a stuck mechanism indicator module. The filtering module generates engine speeds based on positions of teeth of a toothed wheel that rotates with a crankshaft and based on a crankshaft position signal generated by a crankshaft position sensor. The IMEP determination module determines an IMEP for a combustion cycle of a cylinder of an engine based on squares of first and second ones of the engine speeds during the combustion cycle. The stuck mechanism indicator module selectively diagnoses a fault in a variable valve lift (VVL) mechanism of the cylinder based on the IMEP.

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Номер записи: 4
03-10-2013 дата публикации

System to diagnose variable valve actuation malfunctions by monitoring fluid pressure in a control gallery

Номер: US20130255612A1
Автор: Austin Robert ZURFACE, Brian Karl VANDEUSEN, Robert Boychuk
Принадлежит: Eaton Corp

A system for diagnosing malfunctions in a variable valve actuation device is disclosed. The system has a rocker arm assembly that includes: a first arm, a second arm with the first and second arms attached at a first end, a hydraulically operated latch assembly that functions to secure the first arm to the second arm when latched. It also includes a source of pressurized fluid connected to a hydraulic valve that provided fluid high or low pressure fluid to the hydraulically-operated latch. The latch may be operated by a remote device. A control gallery connects the hydraulic valve to the latch. A pressure transducer is positioned within the gallery and is adapted to create a signal indicating the pressure in the gallery. A control unit is coupled to the hydraulic valve and the pressure transducer, and is adapted to sense engine operation parameters, actuate the hydraulic valve, read the signal from the pressure transducer; and identify malfunctions of the rocker arm assembly based upon the signal from the transducer.

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Номер записи: 5
14-11-2013 дата публикации

Variable valve mechanism

Номер: US20130298856A1
Автор: Akira Sugiura
Принадлежит: Otics Corp

The present invention provides a variable valve mechanism for an internal combustion engine which includes an input arm, an output arm, a switching pin, and a displacing device. The displacing device includes a pressing device that presses the switching pin from any one of the coupling position and the non-coupling position to the other one of them, a return spring, and a stopper mechanism. The return spring is provided outside of the input arm and the output arm so as to act on one end of the switching pin, which is exposed from the input arm and the output arm. The stopper mechanism includes a displacement restricting groove that is provided on an outer periphery of the switching pin, and a lock member that is engaged with the displacement restricting groove and contacts one end of the displacement restricting groove when the switching pin is stopped at the non-coupling position.

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Номер записи: 6
28-11-2013 дата публикации

Systems, methods, and devices for valve stem position sensing

Номер: US20130312506A1
Автор: Douglas John NIELSEN, Mark William Hildebrandt
Принадлежит: Eaton Corp

A linear variable differential transformer (LVDT) for monitoring engine valve position is disclosed. The system includes a valve guide having an elongated recess through it. The engine valve has a valve head and a valve stem with two adjacent materials having different magnetic properties meeting at an interface. The valve stem fits and moves linearly within the valve guide, and the valve head closes an engine combustion chamber. It also includes monitoring coils within the valve guide that create a signal related to the position of the interface within the valve guide. An engine control unit (ECU) is coupled to the monitoring coils and receives and analyzes the signal from the monitoring coils to determine operation of the valve.

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Номер записи: 7
26-12-2013 дата публикации

Variably operated valve system for internal combustion engine

Номер: US20130340694A1
Автор: Makoto Nakamura
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

A variably operated valve system for an internal combustion engine, a valve stop mechanism ( 11 ) makes at least one of a pair of fulcrum members lost motion to stop open-and-closure drives for one of two engine valves per cylinder and a stop of open-and-closure drives for the one of the engine valves is inhibited, in a case where a lost motion quantity of the valve stop mechanism exceeds a predetermined value (M3).

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Номер записи: 8
10-04-2014 дата публикации

ENGINE COMPRESSION RELEASE METHOD AND APPARATUS

Номер: US20140096743A1
Автор: Meacham G. B. Kirby
Принадлежит:

The present invention comprises apparatus and methods for releasing internal combustion engine compression during cranking to reduce cranking effort and the size and weight of the starter motor and battery. It is particularly suitable for fuel conservation systems that stop the engine when the vehicle is stopped in traffic, and restart the engine when the driver steps on the accelerator petal, since such systems place heavy demands on the starter motor and battery. The apparatus provides a means for automatically shifting the valve gear such that exhaust and/or inlet valves are held slightly open during the intake compression strokes to reduce compression torque during initial cranking, and restoring the valves to normal operation before the first firing event. The method provides a sequence of steps executed by the engine electronic control module to control the compression release apparatus to carry out the engine starting process safely and reliably. 1. A method for reducing the cylinder compression pressure of a rotating non-firing internal combustion engine on demand comprising adding a lift increment to the normal lift motion of at least one valve of at least one cylinder , wherein the lift increment is substantially independent of engine rotational position , thereby preventing complete valve closure and permitting gas flow form the cylinder during the compression stroke.2. The method of wherein fuel delivery claim 1 , ignition or both are disabled to achieve a non-firing condition in a rotating engine before adding the valve motion lift increment claim 1 , and re-enabled in a rotating engine only after the valve motion lift increment is removed.3. The method of wherein a sensing and control module is utilized to:Measure operating parameters, e.g. engine RPM, load, temperature, and valve motion lift increment status, and operator inputs including brake, accelerator or clutch status; Disable engine firing; and', 'Add valve motion lift increment; or, 'Determine ...

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Номер записи: 9
04-01-2018 дата публикации

ROCKER ARM ASSEMBLY FOR ENGINE BRAKING

Номер: US20180003088A1
Автор: JR. James E., McCarthy, Nielsen Douglas J.
Принадлежит: EATON CORPORATION

An exhaust valve rocker arm assembly includes an exhaust rocker arm and a valve bridge operably associated with the rocker arm. The valve bridge includes a main body and a lever rotatably coupled to the main body. The main body is configured to engage the first exhaust valve, and the lever is configured to engage the second exhaust valve. 1. An exhaust valve rocker arm assembly selectively opening first and second exhaust valves and comprising:an exhaust rocker arm; anda valve bridge operably associated with the rocker arm and including a main body and a lever rotatably coupled to the main body, the main body configured to engage the first exhaust valve, and the lever configured to engage the second exhaust valve.2. The assembly of claim 1 , wherein the lever is coupled to the main body such that rotation of the lever and engagement of the second exhaust valve occurs without rotation of the main body.3. The assembly of claim 1 , wherein the main body includes an aperture claim 1 , the lever at least partially disposed within the aperture.4. The assembly of claim 3 , wherein the lever is rotatably coupled to the main body by a bridge pin extending through the main body.5. The assembly of claim 1 , wherein the lever includes an engagement surface claim 1 , an opposed side opposite the engagement surface claim 1 , and a stop flange extending therefrom claim 1 , wherein the engagement surface is configured to be engaged by an engine brake rocker arm claim 1 , the opposed side is configured to move upwardly against the main boy when the engagement surface is moved downward claim 1 , and wherein the stop flange is configured to selectively engage an edge of the main body that at least partially defines the aperture to limit downward movement of the lever.6. The assembly of claim 1 , further comprising a valve shoe rotatably coupled to the lever claim 1 , the valve shoe configured to engage the second exhaust valve.7. The assembly of claim 6 , wherein the valve shoe is ...

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Номер записи: 10
07-01-2021 дата публикации

VARIABLE VALVE ACTUATION

Номер: US20210003042A1
Автор: Fessler Harald
Принадлежит:

The present invention provides for Variable Valve Actuation comprising a cam, a valve suitable to displace between a closed position and an open condition caused by said cam, and further comprising a main rocker arm suitable to swing over a fulcrum , mechanically interacting with said valve, by means of a guide profile, and wherein said cam interacts with said main rocker arm causing said valve displacement as a consequence of said main rocker arm swinging. The target is to prevent a valve brake due to the guide profile and enable higher system stiffness. Accumulator less designs are feasible with this system. 1. A Variable Valve Actuation (VVA) comprisinga cam (CS),a valve (V) suitable to displace between a closed position and an open condition caused by a rotation of said cam,and further comprising a main rocker arm (MA) suitable to swing over a fulcrum (F), mechanically interacting with said valve (V), by means of a guide profile (WV), and wherein said cam interacts slidingly or rollingly with said main rocker arm causing said valve displacement as a consequence of said main rocker arm swinging, adjusting means (SPT, PT) arranged to relative move said fulcrum with respect to said cam and/or', 'adjusting means (HI) interposed between said cam (CS) and said main rocker arm and arranged to modify said mechanical interaction., 'wherein said variable valve actuation is obtained by means of'}2. The VVA according to claim 1 , wherein said guide is shaped as a circumference arc provided of a spur (SPUR) claim 1 , in such a way to define a ramp valve displacement as a consequence of said swinging.3. The VVA according to claim 2 , wherein said main rocker arm is pre-charged by a home spring (SP) in order to press the main rocker arm towards or against the cam (CS).4. The VVA according to claim 3 , wherein said home spring is a spiral enslaved on said fulcrum (F) or is a spring interposed between said main rocker arm and a fixed point of a head of an engine including said ...

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Номер записи: 11
12-01-2017 дата публикации

SWITCHABLE ROCKER ARM WITH PIVOT JOINT

Номер: US20170009610A1
Автор: Ahmed Faheem, Chandler David, Foster Colin, Higdon Kate, Whitton John
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A switchable rocker arm for valve deactivation is provided for a valve train of an internal combustion engine. The switchable rocker arm includes a cam lever assembly, a valve lever assembly, and a hydraulically actuated coupling assembly that is radially arranged between the cam lever and valve lever assemblies. The coupling assembly includes a shuttle pin, a locking pin with a round or flat locking interface, and optional shuttle pin and locking pin sleeves. In a first, locked position, the rotational motion of a camshaft is translated to linear motion of an engine valve. In a second, unlocked position, the cam lever assembly rotates about the valve lever assembly, facilitating valve deactivation. A pivot joint arranged between the cam lever and valve lever assemblies facilitates an arcuate lost motion of the cam lever assembly. An integrated arrangement for one or more lost motions springs offers packaging and functional advantages. 1. A switchable rocker arm comprising: a first rocker shaft bore at a first end;', 'a radial shuttle pin bore in fluid communication with the first rocker shaft bore; and,', 'a first curved surface concentric with the first rocker shaft bore;', 'a cam lever assembly having:', 'a cam interface end;', 'a radial locking pin bore; and,', 'a second curved surface rotationally guided by the first curved surface;, 'a valve lever assembly havinga coupling assembly, including a locking pin arranged to move longitudinally within the locking pin bore and a shuttle pin arranged to move longitudinally within the shuttle pin bore with a first end of the shuttle pin engaging a first end of the locking pin.2. The switchable rocker arm of claim 1 , further comprising a first rotational stop at a first end of the first curved surface and a second rotational stop configured within the valve lever assembly.3. The switchable rocker arm of claim 2 , wherein the second rotational stop is arranged at a first end of a third curved surface.4. The switchable ...

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Номер записи: 12
27-01-2022 дата публикации

ROCKER ARM ASSEMBLY WITH LOST MOTION SPRING CAPSULE

Номер: US20220025788A1
Автор: Andrisani Nicola, Radulescu Andrei, Rezkalla Ramy
Принадлежит: Eaton Intelligent Power Limited

A valve train arrangement constructed in accordance to one example of the present teachings includes a rocker arm, a deactivating hydraulic lash adjuster (HLA) capsule, a lost motion spring (LMS) capsule and a lever. The rocker arm has a first end and a second end. The second end cooperates with a valve. The HLA capsule cooperates with the first end of the rocker arm. The LMS capsule has a lost motion spring. The LMS capsule is located in a position on the valve train arrangement that is offset from the HLA capsule. The lever is configured between the HLA capsule and the LMS capsule. During cylinder deactivation, load is transferred from the HLA capsule to the lever arm and ultimately to the lost motion spring in the LMS capsule. 1. A valve train arrangement comprising:a rocker arm having a first end and a second end, the second end cooperating with a first valve;a deactivating hydraulic lash adjuster (HLA) capsule cooperating with the first end of the rocker arm;a lost motion spring (LMS) capsule having a lost motion spring, the LMS capsule located in a position on the valve train arrangement that is offset from the HLA capsule; anda lever configured between the HLA capsule and the LMS capsule wherein during cylinder deactivation, load is transferred from the HLA capsule, to the lever arm and ultimately to the lost motion spring in the LMS capsule.2. The valve train arrangement of wherein the LMS capsule includes a capsule housing that receives the lost motion spring.3. The valve train arrangement of wherein the LMS capsule further includes a spring cap that bears against the lever arm.4. The valve train arrangement of wherein the lever arm includes an extension lobe that bears against the spring cap.5. The valve train arrangement of claim 4 , wherein the lost motion spring bears against the spring cap.6. The valve train arrangement of wherein the LMS capsule housing further receives a lever pin and wherein during movement of the lever arm claim 4 , the lever arm ...

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Номер записи: 13
11-02-2016 дата публикации

HYDRAULIC LASH ADJUSTER ANTI-ROTATION CLIP

Номер: US20160040563A1
Автор: Shewell Jeffrey
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A hydraulic lash adjuster arrangement is provided that includes a cylinder head including a bore and at least one hydraulic fluid gallery. The hydraulic lash adjuster arrangement includes a hydraulic lash adjuster assembly including a housing positioned in the bore of the cylinder head and including an annular body that includes a port on a radially outer wall of the housing. A plunger is arranged within the annular body of the housing and is axially displaceable therein. A clip including a circular body is arranged radially between the housing and the cylinder head. The clip includes at least one first tab extending radially outwardly that engages the at least one hydraulic fluid gallery and at least one second tab extending radially inwardly that engages the port. 1. A hydraulic lash adjuster arrangement comprising:a cylinder head including a bore and at least one hydraulic fluid gallery; and a housing positioned in the bore of the cylinder head including an annular body that includes a port on a radially outer wall of the housing;', 'a plunger arranged within the housing that is axially displaceable therein; and', 'a clip including a circular body and at least one first tab extending radially outwardly and at least one second tab extending radially inwardly., 'a hydraulic lash adjuster assembly including2. The hydraulic lash adjuster assembly of claim 1 , wherein the at least one first tab engages the at least one hydraulic fluid gallery claim 1 , and the at least one second tab engages the port.3. The hydraulic lash adjuster assembly of claim 1 , wherein the at least one first tab and the at least one second tab are arranged circumferentially aligned with each other on radially opposite faces of the circular body.4. The hydraulic lash adjuster assembly of claim 1 , wherein the at least one first tab and the at least one second tab are arranged circumferentially offset from each other on radially opposite faces of the circular body.5. The hydraulic lash adjuster ...

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Номер записи: 14
06-02-2020 дата публикации

ROCKER ARM ASSEMBLY FOR ENGINE BRAKING

Номер: US20200040777A1
Автор: JR. James E., McCarthy, Nielsen Douglas J.
Принадлежит: Eaton Intelligent Power Limited

An exhaust valve rocker arm assembly selectively opening first and second exhaust valves includes an exhaust rocker arm, an engagement capsule, a valve bridge operably associated with the rocker arm and including a main body, and a hydraulic actuator assembly disposed at least partially within an aperture formed within the main body. The hydraulic actuator assembly includes a first piston body and a second piston body disposed at least partially within the aperture formed in the main body. The exhaust rocker arm is configured to engage the valve bridge main body to engage the first exhaust valve, and the engagement capsule is configured to engage the hydraulic actuator to engage the second exhaust valve. 1. An exhaust valve rocker arm assembly selectively opening first and second exhaust valves and comprising:an exhaust rocker arm;an engagement capsule;a valve bridge operably associated with the rocker arm and including a main body; anda hydraulic actuator assembly disposed at least partially within an aperture formed within the main body, the hydraulic actuator assembly including a first piston body and a second piston body disposed at least partially within the aperture formed in the main body;wherein the exhaust rocker arm is configured to engage the valve bridge main body to engage the first exhaust valve, and the engagement capsule is configured to engage the hydraulic actuator to engage the second exhaust valve.2. The exhaust valve rocker arm assembly of claim 1 , wherein the hydraulic actuator assembly further includes an outer housing claim 1 , the first piston body and the second piston body at least partially disposed within the outer housing and defining a central chamber therebetween configured to receive a fluid.3. The exhaust valve rocker arm assembly of claim 1 , wherein the hydraulic actuator assembly further comprises a biasing mechanism disposed between the first piston body and the second piston body.4. The exhaust valve rocker arm assembly of ...

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Номер записи: 15
15-02-2018 дата публикации

SWITCHING ROCKER ARM ASSEMBLY HAVING ECCENTRIC AXLE FOR LASH ADJUSTMENT

Номер: US20180045081A1
Автор: JR. James Edward, McCarthy, Rehm Brent L.
Принадлежит: EATON CORPORATION

A switching rocker arm assembly constructed in accordance to one example of the present teachings includes an outer arm, an inner arm, a bearing axle and a pivot axle. The outer arm can have a first outer side arm and a second outer side arm. The outer arm can define outer bores. The inner arm can have a first inner side arm and a second inner side arm. The inner arm can be disposed between the first and second outer side arms. The inner arm can define inner bores. The bearing axle can support a bearing. One of the bearing axle and pivot axle comprises (i) a central axle body having a central centerline, (ii) a first axle end body having a first centerline and (iii) a second axle end body having a second centerline. The central centerline is offset from at least one of the first and second centerlines. 1. A switching rocker arm assembly comprising:an outer arm having a first outer side arm and a second outer side arm, the outer arm defining outer bores;an inner arm having a first inner side arm and a second inner side arm, the inner arm disposed between the first and second outer side arms, the inner arm defining inner bores;a bearing axle that supports a bearing; anda pivot axle cooperating with the outer and inner arms;wherein one of the bearing axle and pivot axle comprises (i) a central axle body having a central centerline, (ii) a first axle end body having a first centerline and (iii) a second axle end body having a second centerline, wherein the central centerline is offset from at least one of the first and second centerlines.2. The switching rocker arm assembly of wherein the central axle body locates between the first and second inner side arms.3. The switching rocker arm assembly of wherein the central centerline is offset relative to the first and second centerlines a distance equal to a desired mechanical lash adjustment desired in the switching rocker arm assembly.4. The switching rocker arm assembly of wherein the first and second centerlines are ...

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Номер записи: 16
15-02-2018 дата публикации

DUAL FEED HYDRAULIC LASH ADJUSTER WITH INTEGRATED DE-AERATION RESTRICTION

Номер: US20180045085A1
Автор: Chandler David, MOHAN DAS Pradeep Mohan, SAILER Peter
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A switching hydraulic fluid gallery de-aeration arrangement for a switchable valve arrangement is disclosed. A housing for a hydraulic lash adjuster assembly is positioned in a bore of a cylinder head. The housing includes a first, hydraulic lash adjuster fluid port in a first annular groove, and a second switching hydraulic fluid port in a second annular groove. A top land and a bottom land are positioned next to the annular grooves and each have a primary outer diameter. A middle land is defined axially between the grooves. The middle land has a reduced outer diameter relative to the primary outer diameter, or the bore has an annular groove between the top and bottom lands that defines a restricted flow path between a hydraulic lash adjuster fluid gallery and a switching hydraulic fluid gallery that maintains hydraulic fluid in the switching hydraulic fluid gallery. 1. A switching hydraulic fluid gallery de-aeration arrangement for a switchable valve arrangement , comprising:a cylinder head including a bore, a hydraulic lash adjuster fluid gallery that intersects the bore at a first intersection, and a switching hydraulic fluid gallery that intersects the bore at a second intersection offset from the first intersection; [{'sub': 'P', 'a housing positioned in the bore of the cylinder head including a first, hydraulic lash adjuster fluid port on a radially outer wall in a first annular groove of the housing at the first intersection, a second switching hydraulic fluid port on the radially outer wall in a second annular groove of the housing at the second intersection, a top land positioned axially above the first annular groove, a bottom land positioned axially below the second annular groove, the top land and the bottom land each have a primary outer diameter (D), a middle land defined axially between the first annular groove and the second annular groove;'}, 'a plunger arranged within the housing that is axially displaceable therein; and, 'a hydraulic lash ...

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Номер записи: 17
15-02-2018 дата публикации

Valvetrain assembly with deactivation

Номер: US20180045086A1
Автор: Andrei Dan Radulescu, Eric John Yankovic, Majo Cecur
Принадлежит: Eaton Corp

A deactivating hydraulic lash adjustment (HLA) assembly includes an outer body configured to be received within a cartridge for a valve train carrier, a plunger disposed at least partially within the outer body, the plunger including a hollowed inner area, and an inner body disposed at least partially within the outer body and at least partially within the hollowed inner area. The inner body includes a low pressure chamber defined therein, and a high pressure chamber is defined between the plunger and the inner body within the hollowed inner area. The plunger is movable relative to the outer body and the inner body.

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Номер записи: 18
14-02-2019 дата публикации

Variable valve control system having common valve and engine system having the same

Номер: US20190048762A1
Автор: Myung-Sik Choi, Young-Hong Kwak
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A variable valve control system may include a variable valve mechanism having latching pins for performing variable valve lift by a pressure difference of oil, an oil control circuit block having a low-pressure oil line and a high-pressure oil line to control ON/OFF of the latching pins, and a rotation shaft valve having oil passages for switching the low-pressure oil line and the high-pressure oil line.

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Номер записи: 19
14-02-2019 дата публикации

VARIABLE VALVE LIFT ACTUATOR OF ENGINE

Номер: US20190048766A1
Автор: HWANG Soo Hyun, JEON Wan Jae, Lee Dong Hyeong, PARK Chan Wung, PARK Jong Wung, PARK Jun Min
Принадлежит:

A variable valve lift actuator of an engine includes a first body that rotates within a predetermined angular range; a second body connected to or disconnected from the first body; a latching pin configured to project to or retract from the first body by passing through the second body to connect or disconnect the first body and the second body; a drive module connected to the latching pin through a connecting member to project or retract the latching pin; a rotary shaft disposed above the valve across both side walls of the first body and the second body such that the first body is rotatable; and a return spring installed on the rotary shaft to provide a restoring force to return the first body rotated by the high-speed cam to an original position thereof. 1. A variable valve lift actuator of an engine , the variable valve lift actuator comprising:a first body that rotates within a predetermined angular range by a rotational movement of a high-speed cam coupled to a camshaft;a second body connected to or disconnected from the first body, rotated by the rotational movement of the high-speed cam when connected to the first body, and rotated by a rotational movement of a low-speed cam provided at both sides of the high-speed cam when disconnected from the first body, thereby adjusting a lift amount of a valve;a latching pin configured to project to or retract from the first body by passing through the second body to connect or disconnect the first body and the second body;a drive module connected to the latching pin through a connecting member to project or retract the latching pin;a rotary shaft disposed above the valve across both side walls of the first body and the second body such that the first body is rotatable; anda return spring installed on the rotary shaft to provide a restoring force to return the first body rotated by the high-speed cam to an original position thereof,wherein a lift amount of a valve is variably controlled in two stages of a high-speed ...

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Номер записи: 20
13-02-2020 дата публикации

CONTROL DEVICE OF ENGINE WITH VARIABLE VALVE TIMING MECHANISM

Номер: US20200049031A1
Автор: Inoki Toshiki, Nishimoto Toshiaki, Nishio Takafumi
Принадлежит:

An engine includes a variable valve timing (VVT) mechanism that changes an opening timing or a closing timing of at least one of an intake valve or an exhaust valve in accordance with an operating region of the engine, and an oil jet that injects oil in a piston direction under a pressure of a first predetermined oil pressure or more. The control device of the engine controls supply of an oil pressure to the VVT mechanism in such a manner that an upper limit of an oil pressure used by the VVT mechanism is set to be lower than a first predetermined oil pressure and an operating speed of the VVT mechanism is high in a direction in which an overlap amount between open periods between an intake valve and an exhaust valve increases and is low in a direction in which the overlap amount decreases. 1. An engine control device of an engine including a variable valve timing mechanism that changes an opening timing or a closing timing of at least one of an intake valve or an exhaust valve by hydraulic driving in accordance with an operating region of the engine , and an oil jet that injects oil in a piston direction under a pressure of a first predetermined oil pressure or more , whereinan upper limit of an oil pressure used by the variable valve timing mechanism is set to be lower than the first predetermined oil pressure, andsupply of an oil pressure to the variable valve timing mechanism is controlled in such a manner that an operating speed of the variable valve timing mechanism is high in a direction in which an overlap amount between open periods of the intake valve and the exhaust valve increases, and is low in a direction in which the overlap amount decreases.2. The engine control device according to claim 1 , whereinthe engine includes a plurality of cylinders,the engine selectively performs an all-cylinder operation in which all the plurality of cylinders operate and a reduced-cylinder operation in which one or more of the plurality of cylinders are suspended, andthe ...

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Номер записи: 21
01-03-2018 дата публикации

Hydraulic control system for engine

Номер: US20180058344A1
Автор: Masanori Hashimoto, Toshiaki Nishimoto
Принадлежит: Mazda Motor Corp

A hydraulic control system for an engine having a plurality of cylinders includes: valve stop mechanisms that switch the engine from all-cylinder operation to cylinder cut-off operation; a VVT that can change the timing to open and close valves 14 during all-cylinder operation and cylinder cut-off operation; an oil pump that supplies oil to hydraulically operated devices including the valve stop mechanisms and the VVT through a hydraulic path; and a control device. The control device controls a maintaining oil pressure, which is required to maintain the operated state of the valve stop mechanisms during cylinder cut-off operation, so that the maintaining oil pressure is set to a high value in a high oil viscosity region.

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Номер записи: 22
20-02-2020 дата публикации

Self-contained e-foot

Номер: US20200056512A1
Автор: Matthew A. VANCE
Принадлежит: Eaton Intelligent Power Ltd

A rocker arm, comprises a first outer arm and a second outer. A pivot body is joined between the first end of the first outer arm and the third end of the second outer arm. An actuatable latch mechanism is within the pivot body. An inner arm assembly comprises a latch arm pivotable adjacent the pivot body. An axle joins the inner arm assembly to pivot between the first outer arm and the second outer arm. An outer arm connector spans between the second end of the first outer arm and the fourth end of the second outer arm. A valve seat insert is constrained within the inner arm assembly between the outer arm connector and the axle. Alternatively, a valve seat insert hangs from the axle and is constrained within the inner arm assembly, the valve seat insert comprising a front and a rear cusp.

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Номер записи: 23
20-02-2020 дата публикации

FINGER FOLLOWER WITH OIL SPRAY HOLE

Номер: US20200056513A1
Автор: Chandler David, NAGARAJ Sumukha
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A switching roller finger follower, including: first and second body portions; a resilient element connected to the body portions; and a locking assembly. The first body portion includes: a first bore; a second bore including a first orifice arranged to receive a pressurized fluid; and a second orifice arranged to expel the fluid. The locking assembly includes: a locking pin disposed in the first bore; and a shuttle pin engaged with the locking pin. The shuttle pin is displaceable transverse to the locking pin to: displace the locking pin in a first axial direction to contact the second body portion with the locking pin; and displace the locking pin in a second axial direction to disengage the locking pin from the second body portion. The second bore includes the second orifice; or the second bore does not include the second orifice and is in fluid communication with the second orifice. 1. A switching roller finger follower , comprising: a first bore including a first longitudinal axis;', 'an outer surface;', 'a second bore including a first orifice in the outer surface, the first orifice arranged to receive a pressurized fluid; and,', 'a second orifice in the outer surface, the second orifice arranged to expel the pressurized fluid;, 'a first body portion includinga second body portion;a pin pivotably connecting the second body portion to the first body portion;at least one first resilient element connected to the first body portion and to the second body portion; and, a locking pin at least a portion of which is disposed in the first bore; and,', transverse to the locking pin;', 'engaged with the locking pin; and,', displace the locking pin in a first axial direction, parallel to the first longitudinal axis, to contact the second body portion with the locking pin; and,', 'displace the locking pin in a second axial direction, opposite the first axial direction, to disengage the locking pin from the second body portion, wherein:, 'arranged to be displaced transverse ...

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Номер записи: 24
20-02-2020 дата публикации

Hybrid valve train system

Номер: US20200056514A1
Автор: Darren Yaoshun Ting, David M. Barnes
Принадлежит: Cummins Inc

For a given cylinder in the engine having two intake valves and two exhaust valves, one of the intake valves is driven by a bucket tappet, while the other intake valve is actuated via a roller finger follower. Similarly, one of the exhaust valves is driven by a bucket tappet, while the other exhaust valve is actuated via a roller finger follower. The intake valves read inputs form an intake camshaft, and the exhaust valves read inputs from an exhaust camshaft.

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Номер записи: 25
18-03-2021 дата публикации

Lash adjuster with ball plunger retaining feature and method of making same

Номер: US20210079816A1
Автор: Gary Lynn Janowiak, John Page Chapman, Prasanna Kumar Gudaloor
Принадлежит: Eaton Intelligent Power Ltd

A method of manufacturing a lash adjuster body for use in a lash adjuster assembly can include forming a lash adjuster body to an as-formed condition including an outer cylindrical surface, an inner cylindrical surface leading to a blind bore, an end surface and a leak down portion. The method can also include imparting a wear resistant surface layer to at least the leak down portion of the inner cylindrical surface using ferritic nitrocarburizing (FNC). The lash adjuster body is upset at the end surface thereby forming at least one overlap portion that overlaps an opening to the blind bore.

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Номер записи: 26
26-03-2015 дата публикации

OUTER HOUSING FOR A HYDRAULIC LASH ADJUSTER WITH TAPERED OIL FEED ANNULUS

Номер: US20150083062A1
Автор: Evans Matthew
Принадлежит: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG

A hydraulic lash adjuster is provided. The hydraulic lash adjuster includes an outer housing having an annular body with an open first axial end, a closed second axial end, a radially inner wall defining an axial bore, and a radially outer wall. The radially outer wall includes a first annular groove located adjacent to the first axial end, and a second annular groove located adjacent to the second axial end. A first port is located in the first annular groove, and a second port is located in the second annular groove. A radially outer surface of the first annular groove tapers radially inwardly between a first axial end and a second axial end. 1. A hydraulic lash adjuster comprising:an outer housing having an annular body with an open first axial end, a closed second axial end, a radially inner wall defining an axial bore, and a radially outer wall, the radially outer wall includes a first annular groove located adjacent to the first axial end;a first port located in the first annular groove; anda radially outer surface of the first annular groove tapers radially inwardly between a first axial end and a second axial end.2. The hydraulic lash adjuster of claim 1 , the outer housing further comprising a second annular groove located adjacent to the second axial end claim 1 , and a second port located in the second annular groove.3. The hydraulic lash adjuster of claim 1 , wherein the first port is located adjacent to the second axial end of the first annular groove.4. The hydraulic lash adjuster of claim 1 , wherein the radially outer surface of the first annular groove tapers radially inwardly by approximately 3 degrees between the first axial end and the second axial end.5. The hydraulic lash adjuster of claim 1 , wherein a thickness of the annular body at the first axial end of the first annular groove is greater than a thickness of the annular body at the second axial end of the first annular body.6. The hydraulic lash adjuster of claim 1 , wherein a thickness of ...

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Номер записи: 27
26-03-2015 дата публикации

SWITCHABLE HYDRAULIC LASH ADJUSTER WITH EXTERNAL SPRING AND SOLID STOP

Номер: US20150083063A1
Автор: Evans Matthew
Принадлежит: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG

A valve train of an internal combustion engine with a switchable hydraulic lash adjuster (SHLA) is provided, including a cylinder head having a boss, with an opening defined in the boss. The SHLA is located in the opening, and the SHLA includes: an outer housing having an inner bore, an inner housing movably located in the inner bore of the outer housing, and including a spring retainer at an outer end thereof, and a plunger assembly with a hydraulic lash adjuster mechanism movably located in a bore of the inner housing. A lost motion spring is located between the spring retainer and a spring seat located around the boss. This arrangement reduces the overall packaging length of the SHLA in that only a fraction of the lost motion spring's installed height has an influence on the overall length of the SHLA. 1. A valve train of an internal combustion engine with a switchable hydraulic lash adjuster , comprising:a cylinder head having a boss, with an opening defined in the boss; an outer housing having an inner bore;', 'an inner housing movably located in the inner bore of the outer housing and including a spring retainer at an outer end; and', 'a plunger assembly with a hydraulic lash adjuster mechanism movably located in a bore of the inner housing; and, 'a switchable hydraulic lash adjuster located in the opening, the switchable hydraulic lash adjuster comprisinga lost motion spring located between the spring retainer and a spring seat on the head located around the boss.2. The valve train of claim 1 , further comprising locking pins located in the inner housing that are movable via hydraulic oil pressure from an engaged position claim 1 , in which ends of the locking pins engage corresponding seats in the outer housing claim 1 , to a disengaged position claim 1 , in which the locking pins are pressed into the inner housing allowing the inner housing to move up and down in the outer housing against a force of the lost motion spring.3. The valve train of claim 1 , ...

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Номер записи: 28
22-03-2018 дата публикации

VALVE TRAIN FOR AN ENGINE

Номер: US20180080350A1
Автор: NAIR Adarsh Gopinathan, Rasmussen Laura E.
Принадлежит: Electro-Motive Diesel, Inc.

A valvetrain for an engine includes a pair of valves that are disposed in a spaced apart relation to one another, and in which each of the valves has an elongated valve stem. The valvetrain further includes a valve bridge that is coupled to the pair of valves. The valve bridge is configured to define a pair of receptacles to at least partly receive the pair of valve stems therein. The valve bridge further defines a central recess that is located midway between the pair of receptacles and disposed in a co-planar relationship with the pair of receptacles. 1. A valvetrain for an engine , the valvetrain comprising:a pair of valves disposed in a spaced apart relation to one another, each of the valves having an elongated valve stem;a valve bridge coupled to the pair of valves, the valve bridge configured to define a pair of receptacles to at least partly receive the pair of valve stems therein, the valve bridge further defining a central recess located midway between the pair of receptacles and disposed in a co-planar relationship with the pair of receptacles.2. The valvetrain of further comprising a rocker arm rotatably supported on a rocker shaft and disposed away from the central recess of the valve bridge claim 1 , the rocker arm having a contact element depending downwardly from an end of the rocker arm.3. The valvetrain of further comprising a hydraulic lash adjuster being slidably received in the central recess of the valve bridge claim 2 , the hydraulic lash adjuster having a first end being adapted to abut with a counterbored face of the valve bridge located adjacent to the central recess and a second end being adapted to operatively abut with the contact element of the rocker arm respectively.4. The valvetrain of claim 3 , wherein the positioning of the central recess midway between the pair of receptacles facilitates an axial abutment of the contact element with the second end of the hydraulic lash adjuster such that the valve bridge is configured to ...

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Номер записи: 29
23-03-2017 дата публикации

CONTINUOUS VARIABLE VALVE LIFT APPARATUS AND ENGINE PROVIDED WITH THE SAME

Номер: US20170081987A1
Автор: HA Kyoung Pyo, KIM Back Sik, Kwon Kiyoung, SON You Sang
Принадлежит: HYUNDAI MOTOR COMPANY

A continuously variable valve lift apparatus may include a camshaft, a cam portion on which a cam is formed and into which the camshaft is inserted, a slider housing into which the cam portion is rotatably inserted and disposed to be rotatable around a pivot shaft, a control portion configured to selectively rotate the slider housing around the pivot shaft, a rotation deliverer configured to transmit rotation of the camshaft to the cam portion, an output portion rotatable around the pivot shaft and on which a valve shoe is formed, and a valve device configured to be driven by the valve shoe. 1. A continuously variable valve lift apparatus comprising:a camshaft;a cam portion on which a cam is formed and into which the camshaft is inserted;a slider housing into which the cam portion is rotatably inserted and disposed to be rotatable around a pivot shaft;a control portion configured to selectively rotate the slider housing around the pivot shaft;a rotation deliverer configured to transmit rotation of the camshaft to the cam portion;an output portion rotatable around the pivot shaft and on which a valve shoe is formed; anda valve device configured to be driven by the valve shoe.2. The continuously variable valve lift apparatus of claim 1 , wherein the rotation deliverer comprises:an inner plate connected to the camshaft and from which a control pin protrudes; andan outer plate on which a control slot where the control pin movable therein is formed, and configured to transmit rotation of the inner plate to the cam portion.3. The continuously variable valve lift apparatus of claim 2 , wherein the rotation deliverer further comprises a rotation housing formed to the cam portion claim 2 , andwherein the outer plate is connected to the rotation housing.4. The continuously variable valve lift apparatus of claim 2 , wherein:a stopper protrudes from the inner plate; anda stopper slot is formed to the outer plate for limiting movement of the stopper.5. The continuously variable ...

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Номер записи: 30
23-03-2017 дата публикации

Continuous variable valve lift apparatus and engine provided with the same

Номер: US20170081988A1
Автор: Back Sik Kim, Kiyoung Kwon, Kyoung Pyo Ha, You Sang SON
Принадлежит: Hyundai Motor Co

A continuously variable valve lift apparatus may include a camshaft, a cam portion on which two cams are formed and on which a rotation member is formed between the cams, a slider housing into which the rotation member is rotatably inserted, and rotatable around a pivot shaft, a control portion configured to selectively change a position of the slider housing, an output portion contacting the cams, rotatable around the pivot shaft and on which a valve shoe is formed, and a valve device configured to be driven by the valve shoe.

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Номер записи: 31
25-03-2021 дата публикации

ROCKER ARM WITH INBOARD LOST MOTION SPRING OVER VALVE

Номер: US20210087953A1
Автор: Vance Matthew A.
Принадлежит: Eaton Intelligent Power Limited

A rocker arm can comprise a first outer arm and a second outer arm joined by a pivot body. An actuatable latch mechanism is within the pivot body. An inner arm assembly comprises a latch arm. A first spring prop is on the inner arm assembly distal from the latch arm. An axle joins the inner arm assembly to pivot between the first outer arm and the second outer arm. A spring is biased against the first outer arm and against the first spring prop. The first spring prop can comprise a hooked end. Or, the first spring prop can extend laterally out from the rocker arm and parallel to the axle. The spring can comprise a one-piece spring comprising first and second coil springs connected by a lateral connector. Or, two separate torsion springs can comprising tangential spring ends extending at approximately 90 degrees. 125-. (canceled)26. A rocker arm , comprising:a first outer arm and a second outer arm joined by a pivot body on a first end of the rocker arm and comprising a valve seat on a second end of the rocker arm;a latch mechanism configured to actuate from the pivot body;an inner arm assembly between the first outer arm and the second outer arm;an axle mounted on the second end of the rocker arm, the axle forming a pivot location for the inner arm assembly relative to the first outer arm and the second outer arm; anda lost motion spring around the axle, the lost motion spring biased against the inner arm assembly and biased against the second end.27. The rocker arm of claim 26 , further comprising a spring prop within the inner arm assembly claim 26 , wherein the lost motion spring is biased against the spring prop.28. The rocker arm of claim 27 , wherein the spring prop is biased against the valve seat.29. The rocker arm of claim 27 , wherein the inner arm assembly comprises a first inner arm and a second inner arm claim 27 , and wherein the spring prop extends from the first inner arm.30. The rocker arm of claim 27 , wherein the inner arm assembly comprises a ...

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Номер записи: 32
21-03-2019 дата публикации

Switching rocker arm

Номер: US20190085732A1
Автор: James E. McCarthy, Jr., Matthew Vance
Принадлежит: Eaton Corp

A rocker arm assembly includes an outer arm having first and second low lift lobe contacting surfaces, an inner arm, and a latch assembly. The inner arm includes first and second opposed sidewalls extending between a first end and a second end, and a high lift lobe contacting surface disposed between the first and second opposed sidewalls. The first end is pivotably secured to the outer arm and operably associated with an engine valve, and the second end is operably associated with a lash adjuster and defining a latch bore. The latch assembly is movable between a first configuration and a second configuration. In the first configuration, the latch assembly engages the outer arm such that the outer arm rotates with the inner arm, and in the second configuration, the latch assembly disengages the outer arm such that the outer arm rotates independently from the inner arm.

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Номер записи: 33
05-04-2018 дата публикации

Switchable roller finger follower with integrated leakage path for de-aeration

Номер: US20180094551A1
Автор: David Chandler, Faheem Ahmed, Pradeep Mohan MOHAN DAS
Принадлежит: Schaeffler Technologies AG and Co KG

A switchable roller finger follower includes an inner lever, an outer lever pivotably mounted to the inner lever by a pivot axle, and a coupling device. The coupling device includes a coupling pin configured to move between a locked position in which the inner lever and the outer lever are connected together for movement in at least one direction and an unlocked position in which the inner lever is movable relative to the outer lever in the at least one direction. The coupling device also includes a spring configured to bias the coupling pin in the locked or unlocked position. A de-aeration flow path is formed between an oil passage and an opening for allowing air to move out of the oil passage, past the coupling pin, and exit through the opening. The de-aeration flow path switches between being open and closed based on a position of the coupling pin.

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Номер записи: 34
26-03-2020 дата публикации

VALVE ACTUATING MECHANISM HAVING COMBINED BEARING AND HYDRAULIC LASH ADJUSTER RETENTION DEVICE

Номер: US20200095902A1
Автор: Brune John, Gossman Luke, Meyers Mark
Принадлежит:

A retention device for interconnecting a lash adjuster and a finger follower that supports a bearing of a valve actuating mechanism for an internal combustion engine, wherein the retention device includes a body having a lower member, an upper member spaced from the lower member, and an intermediate member interconnecting the lower and upper members. The lower member includes an aperture that is adapted to be received in a groove of the lash adjuster. The intermediate member is secured to the finger follower such that the retention device interconnects the lash adjuster and the finger follower. The upper member includes a bearing retention mechanism that limits movement of the bearing of the finger follower and retains the bearing relative to the finger follower prior to mounting the finger follower and lash adjuster as a part of the valve actuating mechanism of the internal combustion engine. 1. A retention device for interconnecting a lash adjuster and a finger follower having a body including a pair of walls spaced laterally from one another and an open-ended slot formed in each of the walls , such that the walls act to support a shaft of a bearing of a valve actuating mechanism for an internal combustion engine , said retention device comprising:a body having a lower member, an upper member spaced from said lower member and an intermediate member interconnecting said lower and upper members;said lower member including an aperture which is adapted to be received in a groove of the lash adjuster; andsaid intermediate member secured to the finger follower such that said retention device interconnects the lash adjuster and the finger follower, said upper member including a bearing retention mechanism having a bearing retention tab that extends toward the bearing such that said bearing retention tab limits movement of the bearing along the open-ended slots formed in each of the walls of the finger follower and retains the bearing relative to the finger follower prior ...

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Номер записи: 35
21-04-2016 дата публикации

METHOD FOR DIAGNOSING VARIABLE VALVE ACTUATION MALFUNCTIONS BY MONITORING FLUID PRESSURE IN A CONTROL GALLERY

Номер: US20160108766A1
Автор: Boychuk Robert, VanDeusen Brian Karl, Zurface Austin Robert
Принадлежит:

A system and method for diagnosing malfunctions in a variable valve actuation device. The method uses a rocker arm assembly with a hydraulically operated latch for latching together first and second arms of the rocker arm assembly when latched. The rocker arm assembly includes a source of pressurized fluid connected to a hydraulic valve that provides fluid high or low pressure fluid to the hydraulically-operated latch. A control gallery connects the hydraulic valve to the latch. A pressure transducer is positioned within the gallery and is adapted to create a signal indicating the pressure in the gallery. A control unit is coupled to the hydraulic valve and the pressure transducer. The control unit is adapted to sense engine operation parameters, actuate the hydraulic valve, read the signal from the pressure transducer; and identify malfunctions of the rocker arm assembly based upon the signal from the transducer. 1. A method of diagnosing a malfunction of a variable valve actuation system comprising the steps of:changing a pressure of fluid provided to a hydraulically-activated latch in a rocker arm assembly having at least two arms pivotally connected about a same pivot axis, the rocker arm assembly comprising the hydraulically activated latch for securing the arms together when latched for operation in a first operating mode and functioning to allow a first arm to move relative to a second arm when unlatched in a second operating mode;sensing the pressure of the fluid provided to the hydraulically-activated latch over a time period; andcalculating from the sensed pressure whether the hydraulically-activated latch has moved.2. The method of further comprising the step of: calculating from the sensed pressure a velocity of the hydraulically-activated latch.3. The method of wherein the step of calculating from the sensed pressure comprises the steps of:creating a time vs. velocity trace of the sensed pressure; andcalculating from the time vs. pressure trace a slope ...

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Номер записи: 36
02-04-2020 дата публикации

SWITCHABLE ROCKER ARM

Номер: US20200102859A1
Автор: Charles Peter R., FERNANDEZ HERMES A., Keegan Kevin R., Mariuz Robert M.
Принадлежит:

A rocker arm includes an outer arm and an inner arm which selectively pivots relative to the outer arm. The rocker arm also includes a lock pin which is displaced along a lock pin axis between a coupled position and a decoupled position. The rocker arm also includes a linkage and a linkage guide which guides the linkage along a linkage axis. One surface of the linkage engages an actuator while another surface of the linkage engages the lock pin such that the linkage translates motion from the actuator to motion of the lock pin. 1. A rocker arm for transmitting rotational motion from a camshaft to opening and closing motion of a combustion valve in an internal combustion engine , said rocker arm comprising:an outer arm;an inner arm which selectively pivots relative to said outer arm about a pivot axis;a lost motion spring which biases said inner arm to pivot relative to said outer arm in a first rotational direction;a lock pin which is displaced along a lock pin axis between 1) a coupled position in which said lock pin prevents said inner arm from pivoting relative to said outer arm past a predetermined position of said inner arm relative to said outer arm in a second rotational direction which is opposite of said first rotational direction and 2) a decoupled position in which said lock pin allows said inner arm to pivot relative to said outer arm past said predetermined position in said second rotational direction;a linkage which is slidable along a linkage axis, said linkage comprising a first linkage portion through which said linkage axis passes; a second linkage portion which extends from said first linkage portion laterally outward from said linkage axis and includes a second linkage portion surface which is configured to engage an actuator which causes said linkage to slide along said linkage axis; and a third linkage portion which extends from said first linkage portion laterally outward from said first linkage portion and which includes a third linkage ...

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Номер записи: 37
28-04-2016 дата публикации

LATCH INTERFACE FOR A VALVE ACTUATING DEVICE

Номер: US20160115831A1
Автор: Sheren James R., Spoor Anthony L.
Принадлежит:

A novel latch seat for a switching rocker arm assembly used in variable valve actuation (VVA) systems for internal combustion engines. The seat is formed interactively in the assembled switching rocker arm using a novel fixture and press. The press interactively creates a curved dimple of the correct curvature, position and depth while measuring several lash dimensions. Since the latch seat is formed on the assembled rocker arm assembly, the latch seat depth is designed to account for the inaccuracies in the rocker arm assembly parts which create lash. Therefore all of the parts may be made with less precision since the latch seat is sized to compensate for the inaccuracies of all of the parts. The rocker arm assembly parts now may be manufactured to less stringent standards, but result in a rocker arm assembly with same accuracy of rocker arm assemblies manufactured to previous standards. 1. A switching rocker arm assembly comprising:a plurality of rocker arms and additional structures connected together having manufacturing tolerances that introduce mechanical lash, each switching rocker arm comprising;an outer rocker arm comprising first and second arms, the outer rocker arm further comprising a latch seat;an inner rocker arm adapted for assembly between the first and second arms, the inner rocker arm further comprising a latch with a latch pin,wherein the latch seat is adapted to receive and secure the latch pin, the latch seat comprising: an indentation having a shape complementary to a shape of the latch pin, the indentation having a depth chosen to compensate for at least a portion of the mechanical lash to result in a predefined lash.2. The switching rocker arm assembly of claim 1 , wherein the portion of the mechanical lash for each switching rocker arm comprises a latch lash.3. The switching rocker arm assembly of claim 2 , wherein the predefined lash for each switching rocker arm comprises the latch lash and a cam lash.4. The switching rocker arm assembly ...

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Номер записи: 38
27-04-2017 дата публикации

ENGINE SYSTEM

Номер: US20170114729A1
Автор: Ashikaga Kensuke, Haizaki Yukio, Higashio Masayoshi, Tsuda Akira
Принадлежит:

An engine system includes: a hydraulic valve stop mechanism configured to switch states of an intake valve and exhaust valve of a same stopped cylinder; a hydraulic pressure changing device configured to change hydraulic pressure supplied to the valve stop mechanism; and a valve control portion configured to control the hydraulic pressure changing device. When a return from a reduced-cylinder operation to an all-cylinder operation is requested, and an engine revolution is less than a reference revolution, the hydraulic pressure is changed such that opening of one of the valves of the stopped cylinder able to restart at an earlier stage is first restarted. When the return is requested, and the engine revolution is not less than the reference revolution, the hydraulic pressure is changed such that opening of the exhaust valve of the stopped cylinder is restarted before opening of the intake valve. 1. An engine system comprising a plurality of cylinders each including an intake valve and an exhaust valve , an air-fuel mixture that is a mixture of air and a fuel being combusted in each of the plurality of cylinders ,the engine system configured to switch between an all-cylinder operation in which the air-fuel mixture is combusted in each of all the cylinders and a reduced-cylinder operation in which the air-fuel mixture is not combusted in a specific cylinder out of the plurality of cylinders, and the specific cylinder is set to a stop state,the engine system further comprising:a valve drive mechanism configured to open and close the intake and exhaust valves of the cylinders at respective predetermined timings;a hydraulic drive valve stop mechanism configured to perform switching between a state where each of the intake valve and exhaust valve of the specific cylinder is openable and closable at the predetermined timing by the valve drive mechanism and a state where each of the intake valve and exhaust valve of the specific cylinder is kept closed;a hydraulic pressure ...

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Номер записи: 39
07-05-2015 дата публикации

Hydraulic lash adjuster

Номер: US20150122220A1
Автор: Majo Cecur
Принадлежит: Eaton Srl

A hydraulic lash adjuster for an engine valve train has a hydraulic lash adjusting arrangement for automatically compensating for lash in an engine valve train, and a lost motion arrangement for inhibiting motion induced in the valve train in response to a lift profile of a rotating cam from being transferred to an engine valve.

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Номер записи: 40
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: 41
21-05-2015 дата публикации

Switching roller finger follower with end stops in secondary arms

Номер: US20150135893A1
Автор: Matthew Evans
Принадлежит: Schaeffler Technologies AG and Co KG

A switching roller finger follower including: a housing including first and second walls; a first secondary arm pivotably connected to the housing and including a first groove; a second secondary arm pivotably connected to the housing and including a second groove; and a roller disposed between the first and second walls and including an axle passing through the walls and having a first end disposed in the first groove and a second end disposed in the second groove. A method of fabricating a switching roller finger follower, including: disposing a roller between first and second walls for a housing; passing an axle through the roller and the walls; pivotably connecting first and second secondary arms to the housing; disposing a first end of the axle in a first groove in the first arm; and disposing a second end of the axle in a second groove in the second arm.

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Номер записи: 42
23-04-2020 дата публикации

Hydraulic support element

Номер: US20200123936A1
Автор: Oliver Schnell, Oliver Witter, Peter Sailer
Принадлежит: Schaeffler Technologies AG and Co KG

This disclosure relates to a hydraulic support element for a switchable rocker arm of a valve train of an internal combustion engine. The hydraulic support element includes a cup-shaped cylinder, within which a hollow piston is arranged in an axially displaceable manner. The piston includes a filter cartridge which is in the form of a hollow body and can be charged from the outside with pressurized oil and an interior space of which is connected to an outlet opening of the contact head. An interior space of the piston has two pressurized oil chambers, including a first pressurized oil chamber above the piston head and connected to a first pressurized oil feed, and a second pressurized oil chamber formed under the contact head and connected to a second pressurized oil feed. The filter cartridge is tubular and located in the second pressurized oil chamber.

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Номер записи: 43
19-05-2016 дата публикации

SYSTEMS, METHODS, AND DEVICES FOR VALVE STEM POSITION SENSING

Номер: US20160138484A1
Автор: Hildebrandt Mark William, Nielsen Douglas John
Принадлежит:

A linear variable differential transformer (LVDT) for monitoring engine valve position is disclosed. The system includes a valve guide having an elongated recess through it. The engine valve has a valve head and a valve stem with two adjacent materials having different magnetic properties meeting at an interface. The valve stem fits and moves linearly within the valve guide, and the valve head closes an engine combustion chamber. It also includes monitoring coils within the valve guide that create a signal related to the position of the interface within the valve guide. An engine control unit (ECU) is coupled to the monitoring coils and receives and analyzes the signal from the monitoring coils to determine operation of the valve. 1. A system for measuring a position of a valve in an internal combustion engine , the system comprising:a valve guide having a central recess with a constant diameter passing through a length of the valve guide, 'a valve stem including a first section having a first magnetic property adjacent to a second section having a second magnetic property and an interface between the first section and the second section, the first section, the second section and the interface comprising a single outer diameter less than the constant diameter of the valve guide,', 'wherein the valve of the internal combustion engine comprises 'a linear variable differential transformer (LVDT) located around the valve stem and adapted to generate a signal indicating motion of the valve stem,', 'wherein the valve stem is received by the central recess and the valve stem is adapted to move linearly through the central recess; and'}wherein the valve guide has an external recess and wherein windings of the LVDT are positioned within the external recess of the valve guide.2. The system of claim 1 , wherein the first section comprises an armature.3. The system of wherein a location of the interface on the valve stem is selected and the LVDT position is selected to surround ...

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Номер записи: 44
30-04-2020 дата публикации

Rocker arm

Номер: US20200131947A1
Автор: Majo Cecur
Принадлежит: Eaton Intelligent Power Ltd

A dual body rocker arm for a valve train assembly of an internal combustion engine includes: an outer body having a protrusion; an inner body connected to the outer body and arranged for pivotal movement relative to the outer body about an axis between a first position and a second position; and a torsional biasing element supported by the protrusion and arranged to bias the inner body relative to the outer body towards one of the first position and the second position. The protrusion is formed integrally with the outer body.

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Номер записи: 45
30-04-2020 дата публикации

Rocker arm

Номер: US20200131948A1
Автор: Majo Cecur
Принадлежит: Eaton Intelligent Power Ltd

A dual body rocker arm for controlling a valve of a cylinder of an internal combustion engine includes: a first body; a second body; and a latching arrangement moveable to latch and unlatch the first body and the second body. The latching arrangement includes: a latch pin moveable between a first position in which the latch pin latches the first body and the second body together and a second position in which the first body and the second body are un-latched; and a lever mounted for pivotal motion relative to the first body, a first end of the lever contacting the latch pin, and a second end of the lever configured to contact an actuation arrangement. In use, when the actuation arrangement exerts a force on the second end of the lever, the lever pivots such that the first end of the lever exerts a force on the latch pin.

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Номер записи: 46
30-04-2020 дата публикации

ACTUATOR ARRANGEMENT

Номер: US20200131949A1
Автор: Cecur Majo
Принадлежит:

An actuator arrangement for controlling a first latching arrangement of a first dual body rocker arm for controlling an intake valve of an internal combustion engine, and for controlling a second latching arrangement of a second dual body rocker arm for controlling an exhaust valve of the internal combustion engine, the first and second dual body rocker arms each including a first body, a second body, and the latching arrangement controllable to latch and unlatch the first body and the second body. The actuator arrangement includes: an actuation source; and an actuation transmission arrangement for transmitting movement of the actuation source to both the first latching arrangement and the second latching arrangement. In use, movement of the actuation source causes, via the actuation transmission arrangement, control of the first latching arrangement and of the second latching arrangement in common. 1. An actuator arrangement for controlling a first latching arrangement of a first dual body rocker arm for controlling an intake valve of an internal combustion engine , and for controlling a second latching arrangement of a second dual body rocker arm for controlling an exhaust valve of the internal combustion engine , the first and second dual body rocker arms each comprising a first body , a second body , and the latching arrangement controllable to latch and unlatch the first body and the second body , the actuator arrangement comprising:an actuation source; andan actuation transmission arrangement configured to transmit movement of the actuation source to both the first latching arrangement and the second latching arrangement,wherein, in use, movement of the actuation source is configured to cause, via the actuation transmission arrangement, control of the first latching arrangement and of the second latching arrangement in common.2. The actuator arrangement according to claim 1 , wherein the actuation transmission arrangement is configured to transmit movement of ...

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Номер записи: 47
30-04-2020 дата публикации

ACTUATOR ARRANGEMENT

Номер: US20200131953A1
Автор: Cecur Majo
Принадлежит:

An actuator arrangement for controlling a latching arrangement of a dual body rocker arm of an internal combustion engine, the dual body rocker arm comprising a first body, a second body, and the latching arrangement, the latching arrangement being controllable to latch and unlatch the first body and the second body. The actuator arrangement includes: an actuation source; a shaft including a cam for controlling the latching arrangement; and a gear mechanism for translating a continuous rotation of the actuation source into an intermittent rotation of the shaft in steps of a predefined degree. In use, a continuous rotation of the actuation source causes, via the gear mechanism, the shaft to rotate in steps of a predefined degree, thereby to change an orientation of the cam relative to the latching arrangement by a predefined amount, so as to control the latching arrangement. 1. An actuator arrangement for controlling a latching arrangement of a dual body rocker arm of an internal combustion engine , the dual body rocker arm comprising a first body , a second body , and the latching arrangement , the latching arrangement being controllable to latch and unlatch the first body and the second body , the actuator arrangement comprising:an actuation source;a shaft comprising a cam configured to control the latching arrangement; anda gear mechanism configured to translate a continuous rotation of the actuation source into an intermittent rotation of the shaft in steps of a predefined degree,wherein, in use, a continuous rotation of the actuation source is configured to cause, via the gear mechanism, the shaft to rotate in steps of a predefined degree, thereby to change an orientation of the cam relative to the latching arrangement by a predefined amount, so as to control the latching arrangement.2. The actuator arrangement according to claim 1 , wherein the gear mechanism is configured to prevent rotation of the shaft claim 1 , between the intermittent rotation of the shaft ...

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Номер записи: 48
16-05-2019 дата публикации

VARIABLE VALVE ACTUATION SYSTEM FOR TYPE II VALVERAIN USING LOST MOTION AND RESET

Номер: US20190145288A1
Автор: VanWingerden Mark, Yankovic Eric
Принадлежит: Eaton Intelligent Power Limited

A rocker arm assembly for a Type II valvetrain arranged for cooperation with a cylinder head includes a roller finger follower (RFF) and a lost motion with reset (LMR) hydraulic assembly. The RFF has a first end and a second end. The first end cooperates with a valve. The LMR hydraulic assembly has a hydraulic control element and a plunger. The LMR hydraulic assembly moves the plunger between a rigid position and a non-rigid position. The LMR hydraulic assembly is configured at the second end of the RFF. 1. A rocker arm assembly for a Type II valvetrain arranged for cooperation with a cylinder head , the rocker arm assembly comprising:a roller finger follower (RFF) having a first end and a second end, the first end cooperating with a valve; anda lost motion with reset (LMR) hydraulic assembly having a hydraulic control element and a plunger, the LMR hydraulic assembly moving the plunger between a rigid position and a non-rigid position, the LMR hydraulic assembly configured at the second end of the RFF.2. The rocker arm assembly of claim 1 , further comprising an accumulator claim 1 , wherein the hydraulic control element selectively passes oil to the accumulator.3. The rocker arm assembly of wherein the hydraulic control element further includes a spool valve that connects oil volume to a vented dump.4. The rocker arm assembly of claim 3 , further comprising a reset pin that contacts the RFF and controls the spool valve to connect oil volume to the vented dump.5. The rocker arm assembly of wherein a biasing member biases the RFF toward a cam.6. The rocker arm assembly of claim 1 , further comprising a roller bearing positioned generally intermediate the first end of the RFF and the second end of the RFF.7. The rocker arm assembly of claim 1 , further comprising a hydraulic lash adjuster (HLA) positioned at the first end to accommodate lash between the RFF and a valve.8. The rocker arm assembly of wherein the rocker arm assembly provides variable valve assembly ...

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Номер записи: 49
31-05-2018 дата публикации

Control Shaft for Inlet Valve Shut-Off

Номер: US20180149049A1
Автор: Alexander Hiereth, Ferdinand Weidinger, Sebastian SPERRHACKE, Timo Klees
Принадлежит: Bayerische Motoren Werke AG

A control shaft of a cam shaft adjustment unit has axially spaced adjustment cams, which are designed in a first axial section of the control shaft for a continuous operation of a cylinder and in a second axial section for a cylinder shut-off. The adjustment cams for the continuous operation of a cylinder have, over the entire circumference of the cam circle, a radial extension which is greater than a zero stroke extension and the adjustment cams for the cylinder shut-off have, around their circumference, a shut-off section of the cam circle with a radial extension which is less than or equal to the zero stroke extension. The control shaft has a stop that reduces the rotation in both circumferential directions and functions as the calibration point for an engine electronics system.

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Номер записи: 50
01-06-2017 дата публикации

Valve device for internal combustion engine

Номер: US20170152771A1
Автор: Atsuhisa TAMANO, Toru Sakuma, Toshiyuki Yano, Yuta Nishimura, Yuu Yokoyama
Принадлежит: Toyota Motor Corp

A first swing arm of each cylinder is swung by a fixed cam of an intake camshaft, so as to operate a first intake valve according to a profile thereof. A second swing arm is swung by a second cam and its swing range is changed by a variable mechanism. Hereby, a lift amount of a second intake valve changes continuously. The second cam is selected from a plurality of cams on a cam piece provided around the intake camshaft.

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Номер записи: 51
09-06-2016 дата публикации

Variable valve lift apparatus

Номер: US20160160707A1
Автор: Gee Wook Shin, Gyu Han Hwang, Myungsik Choi, Won Gyu Kim, Yoonsik Woo, Young Hong Kwak
Принадлежит: Hyundai Motor Co

A variable valve lift apparatus to vary lift of a valve disposed at an engine may include an outer body selectively making a lever motion according to rotation of a cam, being adapted such that the valve is connected with one end thereof and a pivot axis of the lever motion is disposed at another end thereof, and forming an inside space, an inner body disposed in the inside space of the outer body and adapted such that one end thereof is rotatably connected with the one end of the outer body, a connecting shaft disposed so as to penetrate the one end of the outer body and the one end of the inner body and connect the outer body with the inner body, and a lost motion spring provided so as to return the inner body which is relatively rotated with the outer body around the connecting shaft.

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Номер записи: 52
21-05-2020 дата публикации

Internal combustion engine

Номер: US20200157979A1
Автор: Manabu Tateno
Принадлежит: Toyota Motor Corp

An internal combustion engine includes: intake and exhaust ports; an intake valve including an intake valve shaft and an intake valve head; and an exhaust valve including an exhaust valve shaft and an exhaust valve head. The surface of the intake valve includes an intake-valve-head front surface exposed in a combustion chamber when the intake valve is closed and an intake-valve-head back surface exposed in the intake port when the intake valve is closed. The surface of the exhaust valve includes an exhaust-valve-head front surface exposed in the combustion chamber when the exhaust valve is closed and an exhaust-valve-head back surface exposed in the exhaust port when the exhaust valve is closed. The arithmetic mean roughness of the whole exhaust-valve-head back surface is greater than the arithmetic mean roughness of each of the whole intake-valve-head front surface, the whole intake-valve-head back surface and the whole exhaust-valve-head front surface.

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Номер записи: 53
23-06-2016 дата публикации

Lash adjuster and method of making same

Номер: US20160177790A1
Автор: Gary Lynn Janowiak, John Page Chapman, Prasanna Kumar Gudaloor
Принадлежит: Eaton Corp

A method of manufacturing a lash adjuster body for use in a lash adjuster assembly can include forming a lash adjuster body to an as-formed condition including an outer cylindrical surface and an inner cylindrical surface. The inner cylindrical surface can have a leak down portion and a blind bore. The method can also include imparting a wear resistant surface layer to at least the leak down portion of the inner cylindrical surface with a sub-critical temperature process. The method can also include preserving the leak down portion in the as-formed condition during imparting of the wear resistant surface layer.

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Номер записи: 54
22-06-2017 дата публикации

INTERNAL COMBUSTION ENGINE HAVING AN ENGINE BACKPRESSURE BRAKE AND A COMPRESSION RELEASE ENGINE BRAKE

Номер: US20170175665A1
Автор: Ebert Christoph, FINK Adrian, Herrmann Tobias
Принадлежит:

An internal combustion engine having at least one outlet valve per cylinder, which outlet valve can be actuated via a camshaft and a transmission device, a hydraulic valve clearance compensation element being arranged in the transmission device between the camshaft and the outlet valve, and having an engine braking device, having an engine backpressure brake for building up an exhaust gas backpressure and a compression release engine brake, by way of which at least one outlet valve can be held open at least in an engine braking phase, the compression release engine brake being formed by the hydraulic valve clearance compensation element. 1. An internal combustion engine comprising:at least one outlet valve in communication with a cylinder, the outlet valve actuated via a camshaft and a transmission device;a hydraulic valve clearance compensation element arranged in the transmission device between the camshaft and the outlet valve;an engine braking device, including an engine backpressure brake for building up an exhaust gas backpressure and a compression release engine brake, by way of which at least one outlet valve can be held open at least in an engine braking phase, wherein the compression release engine brake is formed by the hydraulic valve clearance compensation element;{'b': '1', 'a control device for controlling the injection of fuel which is configured to restart a fuel injection operation after an end of an engine braking mode only after a predefined lag time (Δt) has elapsed, the predefined lag time (Δt) being fixed in such a way that it is greater than a closing time of the outlet valve () after ending of the engine braking mode.'}2. The internal combustion engine according to claim 1 , wherein the hydraulic valve clearance compensation element includes a piston which adjoins a pressure space and an oil pressure line which opens into the pressure space via a check valve which is loaded by way of a spring.3. The internal combustion engine according to ...

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Номер записи: 55
28-05-2020 дата публикации

HARSH CONDITION CONTROLS FOR ELECTRICALLY LATCHED SWITCHING ROLLER FINGER FOLLOWER

Номер: US20200165946A1
Автор: Liskar Petr
Принадлежит:

A method of operating an electromagnetic latch assembly of a type that includes an electromagnet and a latch pin that is stable independently from the electromagnet in both first and second positions includes energizing the electromagnet systematically over a period in a manner that enhances the functionality of the electromagnetic latch assembly without causing the latch pin to move between the first and second positions. The period may be a period over which the electromagnetic latch assembly is too cold and the electromagnet may be energized in a manner that is effective for heating. Alternatively, the period may be one over which the electromagnetic latch assembly is subject to high inertial forces and the electromagnet may be energized in a manner that is effective to enhance latch pin retention. 1. A method of operating an electromagnetic latch assembly of a type that includes a latch pin and an electromagnet that is operative to actuate the latch pin between latched and unlatched positions when current through the electromagnet is suitably varied , the method comprising:increasing the current to the electromagnet systematically over a period in a manner that enhances the functionality of the electromagnetic latch assembly without causing the latch pin to move between latched and unlatched positions.2. A method according to claim 1 , further comprising:without any intervening actuation of the latch pin between the latched and unlatched positions, subsequently actuating the latch pin between the latched and unlatched positions by reducing or reversing the current to the electromagnet.3. A method according to claim 1 , wherein the increasing of the current to the electromagnet systematically over the period increases a temperature within the electromagnetic latch assembly by at least 10° C.4. A method according to claim 1 , wherein:the electromagnetic latch assembly is of a type in which the latch pin is stable independently from the electromagnet in both the ...

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Номер записи: 56
28-06-2018 дата публикации

Variable valve mechanism for engine

Номер: US20180179921A1
Автор: Atsuhisa TAMANO, Soichiro SUGA, Toshiyuki Yano, Yu Yokoyama, Yuta Nishimura
Принадлежит: Toyota Motor Corp

For example, two intake valves for each cylinder each are driven by a selected one of cams via a corresponding rocker arm. Each rocker arm includes a support portion and a pressing portion (distal end portion). The support portion is rockably supported by a cylinder head. The pressing portion is configured to press a stem of the corresponding intake valve. The support portion of one of the rocker arms deviates to one side in an axis X direction (cam axial direction) with respect to the distal end portion. The support portion of the other one of the rocker arms deviates to the other side in the axis X direction with respect to the distal end portion.

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Номер записи: 57
05-07-2018 дата публикации

SUPPORT ELEMENT

Номер: US20180187576A1
Автор: Christgen Wolfgang, Kretschmer Jurgen, KUGLER Michael, SAILER Peter, Schafer Max, Tovar Jochen
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A double-flow hydraulic support element for a switchable finger lever of a valve train of an internal combustion engine is provided. A piston is arranged in an axial bore of the housing of the support element in an axially movable manner, and the piston includes a hollow cylindrical pressure part and a cup-shaped working part. A head of the pressure part is used as a support for the finger lever and projects beyond the housing edge, and an opening for the flow of a hydraulic medium is formed in the end face of the head. The housing has a first passage and a second passage axially spaced from the first passage for the hydraulic medium. The support element has a hydraulic play compensation device with a ball non-return valve for the finger lever. In order to achieve an optimal actuation of the coupling element, a sleeve which is closed on one side is inserted into the pressing part; the closed end of the sleeve reaches the region of an outer annular groove in a sealing manner below the dome-shaped head of the pressing part; a storage space for supplying the play compensation device with the hydraulic medium is formed radially within and axially outside of the sleeve, in the pressure part, and in the working part of the piston; the storage space is connected to the first passage in the housing via a passage opening in the working part; an actuation space formed between the sleeve and the pressure part of the piston for hydraulically supplying the coupling device is connected to the second passage in the housing via a radial passage opening in the pressure part; and the volume of the storage space is substantially greater than the volume of the actuation space. 1. A double-flow hydraulic support element for a switchable finger lever of a valve train of an internal combustion engine , comprising a pot-shaped housing that is installable in a cylinder head of an internal combustion engine , a piston arranged to move axially in an axial hole of the housing coaxial to a ...

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Номер записи: 58
11-06-2020 дата публикации

CYLINDER HEAD

Номер: US20200182101A1
Автор: TAKEUCHI Hirotaka
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A cylinder head includes a hydraulic lash adjuster attachment portion provided with a hydraulic lash adjuster bore in which a hydraulic lash adjuster is inserted; a main oil provided at a position away from the hydraulic lash adjuster bore; a connection oil passage which connects the hydraulic lash adjuster bore and the main oil passage; and a side wall that defines a radially outer portion of the hydraulic lash adjuster bore. The side wall includes a first side wall portion and a second side wall portion that is positioned closer to an opening of the hydraulic lash adjuster bore than the first side wall portion is. A thickness of the second side wall portion is greater than a thickness of the first side wall portion. 1. A cylinder head configured to be provided in an internal combustion engine that includes at least one valve drive mechanism including a hydraulic lash adjuster and a rocker arm , each of the at least one valve drive mechanism being configured to transmit rotation of a camshaft to drive an intake valve or an exhaust valve , the cylinder head comprising:a hydraulic lash adjuster attachment portion provided with a hydraulic lash adjuster bore in which the hydraulic lash adjuster is inserted;a main oil passage through which oil flows, the main oil passage being provided at a position away from the hydraulic lash adjuster bore in a direction that crosses an axial direction of the camshaft, and the main oil passage extending in the axial direction of the camshaft;a connection oil passage which connects the hydraulic lash adjuster bore and the main oil passage, and through which the oil is supplied to the hydraulic lash adjuster; anda side wall that defines a radially outer portion of the hydraulic lash adjuster bore in the hydraulic lash adjuster attachment portion, the side wall including a first side wall portion and a second side wall portion that is positioned closer to an opening of the hydraulic lash adjuster bore than the first side wall portion is ...

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Номер записи: 59
19-08-2021 дата публикации

Valvetrain configurations for multilevel dynamic skip fire variable valve lift switching and cylinder deactivation

Номер: US20210254515A1
Автор: Elliott A. Ortiz-Soto
Принадлежит: Tula Technology Inc

The invention relates generally valve train systems for internal combustion engine. More particularly, valve train configurations enable operation of a cylinder with two distinct, non-zero lift profiles and cylinder deactivation.

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Номер записи: 60
16-07-2020 дата публикации

VARIABLE VALVE DRIVE OF A COMBUSTION PISTON ENGINE

Номер: US20200224560A1
Автор: Elendt Harald, Golovatai-Schmidt Eduard, Schott Dimitri
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

The disclosure relates to a variable valve drive of a combustion piston engine with at least one gas exchange valve per cylinder, wherein each valve stroke is specified by a primary and secondary cam and transmitted to the gas exchange valve via a switchable cam follower that includes a primary lever and a secondary lever. The primary lever is in contact with the primary cam, and the secondary lever is in contact with the paired secondary cam and can be coupled to the primary lever by a coupling element. The coupling element includes a coupling pin, a locking pin, and an unlocking pin. Axially outer ends of the locking and unlocking pin protrude out of the secondary lever and are coupled to a shift rod via respective connection elements, the shift rod being longitudinally movable out of a rest position into a shift position by a linear actuator. 1. A variable valve drive of a combustion piston engine comprising:at least one gas exchange valve per cylinder, a valve lift of the at least one gas exchange valve specified by a primary cam and at least one secondary cam of a camshaft and transmitted selectively to the at least one gas exchange valve via a switchable finger follower, the switchable finger follower including:a primary lever supported on one end thereof by a supporting element and on another end thereof by a valve stem of the at least one gas exchange valve, the primary lever in contact with the primary cam,a secondary lever mounted pivotably on the primary lever, the secondary lever in contact with the at least one secondary cam and selectively coupled to the primary lever by a coupling pin configured to move within a transverse hole of the primary lever, the coupling pin movable: i) by a locking pin arranged in a transverse hole of the secondary lever to move the coupling pin in a first direction to engage a coupling hole of the secondary lever, and ii) an unlocking pin arranged in the coupling hole of the secondary lever to move the coupling pin in a ...

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Номер записи: 61
01-08-2019 дата публикации

CONTROL BASED ON MAGNETIC CIRCUIT FEEDBACK

Номер: US20190234247A1
Автор: Busdiecker Matthew Richard, Hughes Douglas Anthony, STRETCH Dale Arden
Принадлежит: Eaton Intelligent Power Limited

A method of operating an internal combustion engine of a type that has a combustion chamber, a moveable valve having a seat formed in the combustion chamber, a camshaft on which a cam is mounted, and a rocker arm assembly having a rocker arm and a cam follower configured to engage the cam as the camshaft rotates. The method includes obtaining rocker arm position data, using the rocker arm position data to obtain camshaft position information, and using the camshaft position information in an engine management operation. 1. A method of operating an internal combustion engine of a type that has a combustion chamber , a moveable valve having a seat formed in the combustion chamber , a camshaft on which a cam is mounted , and a rocker arm assembly having a rocker arm and a cam follower configured to engage the cam as the camshaft rotates , the method comprising:obtaining rocker arm position data;using the rocker arm position data to obtain camshaft position information; andusing the camshaft position information in an engine management operation.2. The method of claim 1 , wherein the engine management operation is performed by a controller that is not receiving data regarding the position of the camshaft from a camshaft position sensor.3. A method according to claim 1 , wherein obtaining camshaft position information comprises determining a time at which the rocker arm reached maximum lift.4. A method according to claim 1 , wherein using the camshaft position information in an engine management operation comprises using the camshaft position information in conjunction with data from a crank angle sensor to determine the phase relationship between a camshaft and a crankshaft.5. A method according to claim 1 , wherein the engine management operation comprises controlling a cam phaser.6. A method according to claim 1 , wherein the cam includes two lift lobes.7. A method according to claim 6 , wherein:a latch pin is mounted on the rocker arm; andthe method comprises ...

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Номер записи: 62
01-08-2019 дата публикации

CYLINDER HEAD ARRANGEMENT FOR VARIABLE VALVE ACTUATION ROCKER ARM ASSEMBLIES

Номер: US20190234248A1
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: 63
23-07-2020 дата публикации

Hydraulic lash adjuster

Номер: US20200232350A1
Автор: Charles F. COFFEY, Rong Qu
Принадлежит: Caterpillar Inc

A hydraulic lash adjuster includes a longitudinally extending pushrod having a proximal end and a distal end, and a cavity located at the distal end and a piston received in the cavity. The piston includes an internal reservoir and a fluid pathway to the internal reservoir. The fluid pathway includes a longitudinal passage and a radial passage.

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Номер записи: 64
09-09-2021 дата публикации

VALVE TRAIN ASSEMBLY

Номер: US20210277807A1
Автор: Campbell Michael J., Cecur Majo, Radulescu Andrei, VanWingerden Mark
Принадлежит: Eaton Intelligent Power Limited

A type II valve train assembly that selectively opens first and second intake valves and first and second exhaust valves is provided. The valve train assembly includes an intake rocker arm assembly and an exhaust rocker arm assembly. The valve train assembly is configurable for operation in any combination of activated and deactivated states of engine braking and cylinder deactivation. The exhaust rocker arm assembly includes a first exhaust rocker arm, a second exhaust rocker arm and an engine brake exhaust rocker arm. A first exhaust HLA is associated with the first exhaust rocker arm. A second exhaust HLA is associated with the second exhaust valve. An exhaust actuation assembly selectively actuates to alter travel of the first and second exhaust HLA's to change a state of cylinder deactivation between activated and deactivated. 1. A type II valve train assembly that selectively opens first and second intake valves and first and second exhaust valves , the valve train assembly comprising: a first intake rocker arm that selectively opens the first intake valve, a second intake rocker arm that selectively opens the second intake valve and an engine brake intake rocker arm that selectively and collectively opens both of the first and second intake valves;', 'a first intake hydraulic lash adjuster (HLA) associated with the first intake valve, and a second intake HLA associated with the second intake valve;', "an intake actuation assembly that selectively actuates to alter travel of the first and second intake HLA's to change a state of cylinder deactivation between activated and deactivated;"], 'an intake rocker arm assembly comprising a first exhaust rocker arm that selectively opens the first exhaust valve, a second exhaust rocker arm that selectively opens the second exhaust valve and an engine brake exhaust rocker arm that selectively and collectively opens both of the first and second exhaust valves;', 'a first exhaust HLA associated with the first exhaust valve ...

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Номер записи: 65
20-11-2014 дата публикации

Valve lift adjustment arrangement for a mechanically controllable valve drive arrangement, and method for aligning an intermediate lever arrangement

Номер: US20140338622A1
Автор: Frederic Lauer, Rudolf Flierl
Принадлежит: KOLBENSCHMIDT PIERBURG INNOVATIONS GMBH

A valve lift adjustment arrangement for a mechanically-controllable valve drive arrangement includes a bearing shaft, a first roller, a second roller arranged on the bearing shaft, a camshaft arrangement, a valve lift adjustment device comprising a rotatable eccentric shaft, an intermediate lever arrangement, and a device. The intermediate lever arrangement comprises an intermediate lever with a working curve. The intermediate lever is mounted via the first roller to be movable in a slotted-guide track and to be operatively connected to the camshaft arrangement and to the valve lift adjustment device. The device is configured so that the second roller is eccentrically mounted. The device comprises a tool engagement point which aligns the second roller and thereby the intermediate lever arrangement. The camshaft arrangement acts, via the first roller, on the intermediate lever arrangement. The rotatable eccentric shaft is acts, via the second roller, on the intermediate lever arrangement.

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Номер записи: 66
15-09-2016 дата публикации

ROCKER ARM ASSEMBLY FOR USE IN A VALVETRAIN OF A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE

Номер: US20160265394A1
Автор: Brune John Edmund, Smith Scott P.
Принадлежит: GT TECHNOLOGIES

A rocker arm assembly for a valvetrain having a valve, a lash adjuster, and a camshaft lobe. The rocker arm assembly includes a shaft, a bearing rotatably supported by the shaft for engaging the lobe, and a rocker arm. The rocker arm has a pad for engaging the valve, and a socket for engaging the lash adjuster. A pair of walls are disposed between the pad and socket and define a valley for accommodating the shaft. A pair of upwardly-opening arc-shaped bearing surfaces are disposed longitudinally between the pad and the socket and are spaced laterally from each other. The bearing surfaces rotatably support the shaft when the bearing engages the lobe. A pair of retention elements extend from the walls into the valley above the bearing surfaces such that the shaft is prevented from moving out of the valley in absence of engagement between the bearing and the lobe. 1. A rocker arm assembly for use in an internal combustion engine valvetrain having a valve , a lash adjuster , and a camshaft having a lobe; said rocker arm assembly comprising:a shaft;a bearing rotatably supported by said shaft for engaging the lobe of the camshaft; and a pad for engaging the valve,', 'a socket spaced from said pad for engaging the lash adjuster,', 'a pair of walls disposed between said pad and said socket and defining a valley therebetween for accommodating said shaft,', 'a pair of upwardly-opening arc-shaped bearing surfaces spaced laterally from each other and disposed longitudinally between said pad and said socket for rotatably supporting said shaft when said bearing engages the lobe of the camshaft, and', 'a pair of retention elements extending from said walls at least partially into said valley and disposed in spaced relation above said arc-shaped bearing surfaces such that said shaft is prevented from moving out of said valley in absence of engagement between said bearing and the lobe of the camshaft., 'a rocker arm having2. The rocker arm assembly as set forth in claim 1 , wherein ...

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Номер записи: 67
22-09-2016 дата публикации

VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINE

Номер: US20160273414A1
Автор: Ezaki Shuichi, HIROSE Hidetoshi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A valve mechanism includes: a support shaft immovably fixed to a main body of an internal combustion engine, a main arm swingably supported by the support shaft; two sub-arms arranged at both sides of the main arm; a coupling support portion swingably supporting and coupling the two sub-arms to the main arm; a cam; and a roller rotatably located in the main arm. Each of the two sub-arms includes: a drive unit pressing and driving a valve; and a contact portion contacting a plunger of a lash adjuster, the contact portion has a curved surface slidably contacting a flat surface formed in a tip portion of the plunger and having an arc-like curved surface shape of which a central axis line corresponds to a central swing axis line of the main arm in a state where the cam abuts on the roller in a base circular portion of the cam. 1. A valve mechanism for an internal combustion engine comprising:a support shaft;a main arm that is swingably supported by the support shaft;two sub-arms arranged at both sides of the main arm in an axial direction of the support shaft;a coupling support portion that couples the two sub-arms to the main arm, and swingably supports the two sub-arms;a cam including a base circular portion; anda roller rotatably mounted to the main arm through the coupling support portion, a drive unit at a first end thereof, the drive unit pressing and driving a valve; and', 'a contact portion at a second end thereof, the contact portion', 'contacting a plunger of a lash adjuster,, 'wherein each of the two sub-arms includesthe support shaft is immovably fixed to a main body of the internal combustion engine,the contact portion has a curved surface that slidably contacts a flat surface formed in a tip portion of the plunger,the curved surface has an arc-like curved surface shape, anda central axis line of the arc-like curved surface shape is configured to correspond to a central swing axis line of the main arm in a state where the cam abuts on the roller in the base ...

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Номер записи: 68
22-08-2019 дата публикации

SWITCHABLE ROCKER ARM WITH LASH ADJUSTMENT

Номер: US20190257220A1
Автор: Borraccia Dominic, Jermy Ian R.
Принадлежит:

A rocker arm includes an outer arm with an outer follower and an inner arm which selectively pivots relative to the outer arm, the inner arm having an inner follower. A lost motion spring biases the inner arm to pivot relative to the outer arm. A lock pin which slides between a coupled position and a decoupled position. A pivot shaft includes a first portion a second portion centered about a first pivot shaft axis and a third portion located between the first portion and the second portion that is centered about a second pivot shaft axis which is parallel to, and laterally offset from, the first pivot shaft axis. The third portion supports the inner arm. 1. A rocker arm for transmitting rotational motion from a camshaft to opening and closing motion of a combustion valve in an internal combustion engine , said rocker arm comprising:an outer arm with an outer follower;an inner arm which selectively pivots relative to said outer arm, said inner arm having an inner follower;a lost motion spring which biases said inner arm to pivot relative to said outer arm in a first direction;a lock pin which slides between 1) a coupled position in which said lock pin prevents said inner arm from pivoting relative to said outer arm past a predetermined position of said inner arm relative to said outer arm in a second direction which is opposite of said first direction and 2) a decoupled position in which said lock pin permits said inner arm to pivot relative to said outer arm past said predetermined position in said second direction; anda pivot shaft extending from a pivot shaft first end to a pivot shaft second end, said pivot shaft having a first portion, a second portion, and a third portion such that said first portion is proximal to said pivot shaft first end and said second portion is proximal to said pivot shaft second end and said first portion and said second portion are centered about a first pivot shaft axis and such that said third portion is located between said first ...

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Номер записи: 69
22-08-2019 дата публикации

OBD BASED ON MAGNETIC CIRCUIT FEEDBACK

Номер: US20190257221A1
Автор: Busdiecker Matthew Richard, Hughes Douglas Anthony, STRETCH Dale Arden
Принадлежит: Eaton Intelligent Power Limited

A method of operating an internal combustion engine that includes a valvetrain having a rocker arm assembly including a rocker arm on which a latch pin is mounted. An actuator for the latch pin, including an electromagnet, is mounted separately from the rocker arm. Rocker arm position information is obtained by gathering and analyzing data relating to a current or voltage in an electrical circuit that is operative to power the electromagnet. The rocker arm position information is used to perform a diagnostic. 1. A method of operating an internal combustion engine of a type that has a combustion chamber , a moveable valve having a seat formed in the combustion chamber , a camshaft on which a cam is mounted , a rocker arm assembly having a rocker arm and a cam follower configured to engage the cam as the camshaft rotates , and a latch assembly having a latch pin that is mounted on the rocker arm and an actuator that includes an electromagnet that is mounted to a component distinct from the rocker arm , the method comprising:obtaining rocker arm position information by gathering and analyzing data relating to a current or voltage in an electrical circuit that is operative to power the electromagnet; andusing the rocker arm position information to perform a diagnostic.2. A method according to claim 1 , further comprising reporting a result of the diagnostic.3. A method according to claim 1 , wherein the electromagnet is operative to cause the latch pin to translate between the first and the second position.4. A method according to claim 1 , wherein the electromagnet is operative to cause the latch pin to translate between the first and the second position by generating magnetic flux that follows a magnetic circuit that includes the latch pin.5. A method according to claim 4 , wherein:the magnetic circuit includes an air gap between the latch pin and a pole piece of the actuator; andthe rocker arm assembly and the latch assembly are structured such that the air gap ...

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Номер записи: 70
22-08-2019 дата публикации

CYLINDER DEACTIVATION DEACTIVATING ROLLER FINGER FOLLOWER HAVING IMPROVED PACKAGING

Номер: US20190257226A1
Автор: JR. James Edward, McCarthy, Zurface Austin
Принадлежит:

A switching rocker arm assembly constructed in accordance to one example of the present disclosure can include an outer arm, an inner arm, a pivot axle, a bearing axle, a first torsional bearing axle spring and a second torsional bearing axle spring. The outer arm can have a first outer side arm and a second outer side arm. The outer arm can further include first and second torsional spring mounts. The inner arm can be disposed between the first and second outer side arms. The pivot axle can support the inner and outer arm for relative pivotal movement therearound. The bearing axle can support a bearing. The first torsional bearing axle spring can be mounted around the first torsional spring mount and have a first end engaged to the bearing axle and a second end engaged to the outer arm. The first end extends inboard relative to the second end. 1. A switching rocker arm assembly comprising:an outer arm having a first outer side arm and a second outer side arm, the outer arm further including first and second torsional spring mounts;an inner arm disposed between the first and second outer side arms;a pivot axle that supports the inner and outer arms for relative pivotal movement therearound;a bearing axle that supports a bearing;a first torsional bearing axle spring mounted around the first torsional spring mount and having a first end engaged to the bearing axle and a second end engaged to the outer arm, wherein the first end extends inboard relative to the second end; anda second torsional bearing axle spring mounted around the second torsional spring mount and having a first end engaged to the bearing axle and a second end engaged to the outer arm, wherein the first end of the second torsional bearing axle spring extends inboard relative to the second end of the second torsional bearing spring.2. The switching rocker arm assembly of claim 1 , wherein the first end of the first torsional bearing axle spring is nestingly received in a first groove formed in the ...

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Номер записи: 71
22-08-2019 дата публикации

Inductive coupling to rocker arm assemblies

Номер: US20190257227A1
Автор: James Edward Mccarthy, Jr., Phillip A. RHINEHART
Принадлежит: Eaton Intelligent Power Ltd

An internal combustion engine includes a cylinder head and a valvetrain including a poppet valve, a cam shaft on which is mounted a cam, and a rocker arm assembly. The rocker arm assembly includes a rocker arm and a cam follower configured to engage the cam as the cam shaft rotates. The rocker arm assembly is operative to transmit force from the cam to actuate the valve and includes an electrical device mounted to the rocker arm. A first electrical circuit includes the electrical device and a first conductor mounted to the rocker arm and a second electrical circuit includes a second conductor mounted off the rocker arm. The first and second conductors are inductively coupled to an extent that enables effective power transfer or communication between them. Inductive power transfer avoids the use of wires that could become caught, clipped, or fatigued and consequently short out.

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Номер записи: 72
22-09-2016 дата публикации

Internal combustion engine with power-generating member

Номер: US20160276960A1
Автор: Lee Tai-Hwan, Michihiro Kameda
Принадлежит: Nittan Valve Co Ltd

[Problems to be solved] There is known means for converting the vibration energy of the body of a road vehicle to electrical energy, thereby improving the fuel efficiency of the vehicle but since these means cannot collect energy when an internal combustion engine is idling, they are not satisfactory as energy collecting means. Thus, it is a problem to be solved by the present invention to provide an internal combustion engine equipped with an electrical power generating member which can efficiently convert the vibration energy to electrical energy and can prevent spaces occupied by a piezoelectric element, rectifier and other power circuit components. [Solution] The problem can be solved by an internal combustion engine of a road vehicle, which is an internal combustion engine equipped with an electrical power generating member, the electrical power generating member is provided in a passive member subjected to the motion of an actuating member constituting a component of the internal combustion engine and the electrical power generating member is constituted to generate electrical power in response to motion of the actuating member and store the generated electrical power in an electrical storage device.

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Номер записи: 73
18-12-2014 дата публикации

RETENTION DEVICE FOR VALVE ACTUATING MECHANISM

Номер: US20140366826A1
Автор: Brune John Edmund, Smith Scott P., Stoody Ira Richard
Принадлежит:

A retention device to secure a finger follower and lash adjuster of a valve actuating mechanism together includes a ring member disposed in a groove of a movable piston of the lash adjuster. The retention device also includes a plurality of connecting members formed from the finger follower and extending axially below the ring member and about a portion of the lash adjuster to engage the ring member in all operating positions of the valve actuating mechanism as a result of the pivoting motion of the finger follower. 1. A retention device to secure a finger follower and lash adjuster of a valve actuating mechanism together comprising:a ring member adapted to be disposed in a groove of a moveable piston of the lash adjuster; anda plurality of connecting members adapted to be formed from the finger follower and extending axially below said ring member and about a portion of the lash adjuster to engage said ring member in all operating positions of the valve actuating mechanism as a result of the pivoting motion of the finger follower.2. A retention device as set forth in wherein said connecting members are cantilevered to extend toward said ring member.3. A retention device as set forth in wherein said connecting members form a groove to receive said ring member.4. A retention device as set forth in wherein said connecting members are angled inwardly to extend radially below and past said ring member.5. A retention device as set forth in wherein said connecting members include a tab extending radially from an interior surface thereof and below and past said ring member.6. A retention device to secure a finger follower and lash adjuster of a valve actuating mechanism together comprising:a plurality of connecting members adapted to be formed from the finger follower and extending axially about a portion of the lash adjuster and adapted to engage a groove of the lash adjuster in all operating positions of the valve actuating mechanism as a result of the pivoting motion of ...

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Номер записи: 74
06-10-2016 дата публикации

Lash adjuster

Номер: US20160290179A1
Автор: Hiroyuki Suzuki
Принадлежит: Otics Corp

A lash adjuster includes a body which is cylindrical in shape and a plunger. The plunger is reciprocably inserted into the body and has an interior in which a low-pressure chamber is defined. The plunger has a bottom wall defining a high-pressure chamber in conjunction with the body between them and a peripheral wall formed with a plunger oil hole through which an operating oil is fed into the low-pressure chamber. The bottom wall is formed with a valve hole through which the operating oil stored in the low-pressure chamber is allowed to flow into the high-pressure chamber. The plunger has a pocket provided on the peripheral wall so as to be deformed toward the low-pressure chamber and inclined in an upward direction, defining the plunger oil hole.

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Номер записи: 75
27-08-2020 дата публикации

ACTUATION APPARATUS

Номер: US20200271023A1
Автор: Andrisani Nicola, RAIMONDI Emanuele
Принадлежит:

An actuation apparatus () for actuating a latching arrangement () of a switchable valve train component () of an internal combustion engine is disclosed. The actuation apparatus comprises a lever () for contacting an actuation source () and for contacting the latching arrangement (), and a biasing means (). The biasing means () contacts the lever (). In use, the biasing means () becomes biased by the lever () when the actuation source moves the lever () when the actuation source () attempts to actuate the latching arrangement (), via the lever (), when the latching arrangement () is non-actuatable. The biasing means () causes the lever () to actuate the latching arrangement () when the latching arrangement () is actuatable again. Also disclosed is a valve-train assembly. 2. The actuation apparatus according to claim 1 , wherein the lever contacts the bias at a first end of the lever.3. The actuation apparatus according to claim 2 , wherein the lever is configured such that claim 2 , in use claim 2 , the lever rotates about the first end of the lever when the actuation source attempts to actuate the latching arrangement claim 2 , via the lever claim 2 , when the latching arrangement is actuatable.4. The actuation apparatus according to claim 2 , wherein a second end of the lever claim 2 , opposite to the first end of the lever claim 2 , is configured to contact the latching arrangement.5. The actuation apparatus according to claim 4 , wherein the lever is configured such that claim 4 , in use claim 4 , the lever rotates about the second end when the actuation source moves the lever when the actuation source attempts to actuate the latching arrangement claim 4 , via the lever claim 4 , when the latching arrangement is non-actuatable.6. The actuation apparatus according to claim 4 , a central portion of the lever claim 4 , intermediate of the first end and the second end of the lever claim 4 , is configured to contact the actuation source.7. The actuation apparatus ...

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Номер записи: 76
04-10-2018 дата публикации

HYDRAULIC SUPPORT ELEMENT

Номер: US20180283224A1
Автор: Ahmed Faheem, Chandler David, Foster Colin
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A hydraulic support element including a housing with a central bore and a bottom face that is provided on one axial end of the housing, a piston that is arranged in the bore of the housing, the piston is connected to a bottom closure so as to define a first pressure chamber and a second pressure chamber is defined between the bottom face and the bottom closure. A valve is provided between the first pressure chamber and the second pressure chamber to regulate a fluid connection between the pressure chambers, and a seal formed between the piston and the bottom closure with the bottom closure being affixed to the piston in a detachable manner. 1. A hydraulic support element comprising:a housing with a central bore and a bottom face that is provided on one axial end of the housing;a piston that is arranged in the bore of the housing, the piston is connected to a bottom closure so as to define a first pressure chamber, and a second pressure chamber is defined between the bottom face and the bottom closure;a valve provided between the first pressure chamber and the second pressure chamber to regulate a fluid connection between the pressure chambers; anda seal formed between the piston and the bottom closure with the bottom closure being affixed to the piston in a detachable manner.2. The hydraulic support element as recited in claim 1 , wherein the piston comprises a first piston part and a second piston part claim 1 , and at least one of the piston parts is connected to the bottom closure.3. The hydraulic support element as recited in claim 1 , wherein the piston has a hollow cylindrical shape.4. The hydraulic support element as recited in claim 1 , wherein the piston claim 1 , has a groove for fixation of the bottom closure claim 1 , and a retaining element is inserted in the groove.5. The hydraulic support element as recited in claim 4 , wherein the retaining element is ring-shaped and is snappable into the groove of the piston in order to fix the bottom closure.6. The ...

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Номер записи: 77
04-10-2018 дата публикации

Internal combustion engine

Номер: US20180283312A1
Автор: II Elario Dino Dalmas, Roy A. Blom
Принадлежит: Quest Engines LLC

Internal combustion engines having a split crankshaft are disclosed. The engines may also have non-circular, preferably rectangular, cross-section pistons and cylinders. The pistons may include a skirt with a field of pockets that provide a ringless, non-lubricated, seal equivalent. The pistons also may have a domed piston head with depressions thereon to facilitate the movement of air/charge in the cylinder. The engines also may use multi-stage poppet valves in lieu of conventional poppet valves. The engines may use the pumping motion of the engine piston to supercharge the cylinder with air/charge. The engines also may operate in an inverted orientation in which the piston is closer to the local gravitationally dominant terrestrial body's center of gravity at top dead center position than at bottom dead center position.

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Номер записи: 78
11-10-2018 дата публикации

PROCESS FOR THE PREPARATION OF LOMITAPIDE

Номер: US20180291773A1
Автор: BANDI Parthasaradhi Reddy, Bandi Vamsi Krishna, Jambula Mukunda Reddy, KURA Rathnakar Reddy
Принадлежит:

The present invention relates to a process for preparing Lomitapide or its pharmaceutically acceptable salt thereof having high purity with acceptable levels of impurities. 110-. (canceled)12. The process as claimed in claim 11 , wherein solvent used in step i) selected from the group comprising of methanol claim 11 , ethanol claim 11 , isopropanol claim 11 , methylene chloride claim 11 , dimethyl formamide claim 11 , ethyl acetate claim 11 , isopropyl acetate claim 11 , acetonitrile claim 11 , heptane claim 11 , toluene claim 11 , n-heptane claim 11 , n-hexane claim 11 , diisopropyl ether claim 11 , tetrahydrofuran claim 11 , 1 claim 11 ,4-dioxane or mixture thereof.13. The process as claimed in claim 11 , wherein debenzylation in step iv) carried out using a metal catalyst is selected from the group comprising of palladium and platinum.14. The process as claimed in claim 11 , wherein acid used in step iv) selected from the group comprising of hydrochloric acid claim 11 , hydrobromic acid claim 11 , acetic acid and formic acid.15. The process as claimed in claim 11 , wherein acid salt of compound of Formula III is selected from the group comprising of hydrochloric acid salt claim 11 , hydrobromic acid salt claim 11 , acetic acid salt and formic acid salt.1617-. (canceled)18. The process as claimed in claim 11 , wherein solvent used in step i) selected from the group comprising of methanol claim 11 , ethanol claim 11 , methylene chloride claim 11 , acetonitrile claim 11 , acetone claim 11 , ethylacetate claim 11 , dimethyl formamide or mixture thereof.19. The process as claimed in claim 11 , wherein solvent used in step ii) selected from the group comprising of methanol claim 11 , ethanol claim 11 , methylene chloride claim 11 , acetonitrile claim 11 , acetone claim 11 , ethyl acetate claim 11 , n-heptane claim 11 , n-hexane claim 11 , toluene claim 11 , dimethyl formamide or mixture thereof.20. The process as claimed in claim 11 , wherein acid used in step iii) ...

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Номер записи: 79
27-10-2016 дата публикации

Variable valve mechanism of internal combustion engine

Номер: US20160312669A1
Автор: Koki Yamaguchi, Masaaki Tani, Masatoshi Sugiura, Motohiro Yuge, Naoki Hiramatsu, Shinichiro Kikuoka, Takayuki Maezako
Принадлежит: Otics Corp, Toyota Motor Corp

A variable valve mechanism of an internal combustion engine includes a plurality of swing members and a variable device that displaces a control shaft to displace a plurality of slider gears of the swing members at a time, thereby changing valve lifts of the plurality of swing members at a time by meshing of helical splines. The swing members include a first swing member for a predetermined cylinder of a plurality of cylinders and a second swing member for a cylinder other than the predetermined cylinder, and a helix angle of the helical splines varies between the first and the second swing members. The variable device displaces the control shaft to a predetermined normal position to perform a normal operation, and displaces the control shaft to a predetermined cylinder cutoff position to perform a cylinder cutoff operation in which the second swing member does not drive a valve.

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Номер записи: 80
25-10-2018 дата публикации

LOW FRICTION SWITCHING ROLLER FINGER FOLLOWER FOR HIGH VALVE LIFT

Номер: US20180306072A1
Автор: Brownell Edwin Scott, JR. James E., McCarthy, Saggam Nikhil
Принадлежит: EATON CORPORATION

A switching roller finger follower for valve actuation comprises a pair of outer arms comprising an axle mounting. A bridge portion joins the pair of outer arms. A latch assembly comprises a ferrule. The ferrule is configured to reciprocate in a latch recess. An inner arm is pivotably mounted to a main axle and comprises a bearing rotatably mounted to a bearing axle. The bearing is configured to transfer forces from a cam lobe to the inner arm. A catch on the inner arm is configured to latch against the lip when the ferrule is in a first position. The catch can pivot past the ferrule when the ferrule is in a second position. 1. A switching roller finger follower for valve actuation , comprising:a pair of outer arms configured to transfer forces from a pair of outer cam lobes, the pair of outer arms comprising respective axle mountings;a bridge portion joining the pair of outer arms, the bridge portion comprising a first spring seat opposite a second spring seat, and a latch recess between the first spring seat and the second spring seat;a latch assembly comprising a ferrule, the ferrule configured to reciprocate in the latch recess;a main axle mounted in the respective axle mountings; an inner bearing axle comprising portions extending through the inner arm;', 'an inner bearing rotatably mounted to the inner bearing axle, the inner bearing configured to transfer forces from a cam lobe to the inner arm; and', 'a catch on the inner arm, the catch configured to latch against the ferrule when the ferrule is in a first position, the catch configured to pivot past the ferrule when the ferrule is in a second position; and, 'an inner arm pivotably mounted to the main axle, the inner arm comprisinga first spring mounted to the first spring seat and a second spring mounted to the second spring seat, wherein the first spring and the second spring are biased between the bridge portion and the portions of the inner bearing axle extending through the inner arm,wherein the inner ...

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Номер записи: 81
25-10-2018 дата публикации

DISCRETE VARIABLE VALVE LIFT ENGINE SYSTEMS AND METHODS

Номер: US20180306073A1
Автор: Brownell Edwin Scott, Dharmadhikari Susheel, JR. James E., McCarthy, Saggam Nikhil
Принадлежит: EATON CORPORATION

A method of providing a rocker arm set for a valvetrain includes providing a first rocker arm configured as a switching rocker arm for a first intake valve, and providing a second rocker arm configured as a fixed rocker arm for a second intake valve, the second rocker arm operating in a normal Otto cycle mode. The first rocker arm operates in a late intake valve closing (LIVC) mode where the first rocker arm is configured to close the first intake valve later than the second intake valve. 1. A method of providing a rocker arm set for a valvetrain , the method comprising:providing a first rocker arm configured as a switching rocker arm for a first intake valve; andproviding a second rocker arm configured as a fixed rocker arm for a second intake valve, the second rocker arm operating in a normal Otto cycle mode;wherein the first rocker arm operates in a late intake valve closing (LIVC) mode where the first rocker arm is configured to close the first intake valve later than the second intake valve.2. The method of claim 1 , wherein the first rocker arm is provided such that lash variation is encountered exclusively during a valve closing event.3. The method of claim 2 , further comprising providing the first rocker arm to selectively and alternatively operate in a high-lift mode and a low-lift mode.4. The method of claim 3 , further comprising providing the first rocker arm to operate in a high-lift mode claim 3 , the lash variation being experienced exclusively during the high-lift mode.5. The method of claim 4 , further comprising providing the first rocker arm to encounter the lash variation exclusively during a valve closing event during LIVC mode.6. The method of claim 1 , further comprising providing the switching rocker arm as a switching roller finger follower (SRFF) having discrete operation in one of a low-lift mode and a high-lift mode.7. (canceled)8. The method of claim 6 , further comprising providing the SRFF with an outer arm and an inner arm.9. The ...

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Номер записи: 82
03-11-2016 дата публикации

EXTERNAL OIL GROOVE ON A HYDRAULIC LASH ADJUSTER

Номер: US20160319706A1
Автор: McConville Gregory Patrick
Принадлежит:

Methods and systems are provided for a valve actuating mechanism. In one example, a method includes flowing hydraulic fluid from a first gallery to a second gallery via an external metered hydraulic fluid passage of a hydraulic lash adjuster. 1. A method , comprising:closing a control valve to flow hydraulic fluid from a first annular gallery to a second annular gallery of a hydraulic lash adjuster via a metered hydraulic fluid passage positioned between the first and second annular galleries and on an outer surface of a hydraulic lash adjuster intermediate spool; andopening the control valve to flow hydraulic fluid directly to the second annular gallery from the control valve.2. The method of claim 1 , wherein flowing hydraulic fluid through the metered hydraulic fluid passage includes the hydraulic fluid being contained within the metered hydraulic fluid passage and a bore of the hydraulic lash adjuster without flowing through internal passages of the hydraulic lash adjuster.3. The method of claim 1 , wherein opening the control valve increases a pressure of the second annular gallery.4. The method of claim 1 , wherein switching a position of the control valve inverts a direction of a flow of hydraulic fluid in a second annular gallery conduit.5. The method of claim 1 , wherein opening the control valve deactivates a cylinder of an engine.6. The method of claim 1 , wherein closing the control valve results in the first annular gallery being greater in pressure than the second annular gallery claim 1 , and opening the control valve results in the second annular gallery being greater in pressure than the first annular gallery.7. The method of claim 1 , wherein hydraulic fluid continuously flows directly from a pump to the first annular gallery during engine operation.8. A hydraulic lash adjuster claim 1 , comprising:a one piece plunger body coupled to a first gallery for mitigating lash in a variable displacement engine and a second gallery for providing hydraulic ...

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Номер записи: 83
03-11-2016 дата публикации

HYDRAULIC SUPPLY DEVICE FOR VALVE STOPPING MECHANISM

Номер: US20160319707A1
Автор: NAKAHARA Yasushi, Nishimoto Toshiaki, Suzuki Yohei, Takahashi Hiroshi
Принадлежит: MAZDA MOTOR CORPORATION

A hydraulic supply device for a valve stopping mechanism includes: a specific hydraulic oil supply passage which constantly supplies hydraulic oil, a valve stopping mechanism incorporated in a cylinder head, and configured to stop at least one of an intake valve and an exhaust valve, a valve stopping oil passage which supplies hydraulic oil to the valve stopping mechanism, a control valve which controls the supply of hydraulic oil to the valve stopping oil passage, and a communication oil passage which communicates between the valve stopping oil passage and the specific hydraulic oil supply passage, and provided with a restrictor therebetween. The specific hydraulic oil supply passage is connected to an oil supply portion for a portion to be lubricated or for a portion to be cooled in the engine at a position downstream of a connection position with respect to the communication oil passage in an oil supply direction. 1. A hydraulic supply device for a valve stopping mechanism in an engine , comprising:a specific hydraulic oil supply passage which constantly supplies hydraulic oil during driving of the engine;a valve stopping mechanism incorporated in a cylinder head of the engine, and configured to stop at least one of an intake valve and an exhaust valve by a hydraulic operation;a hydraulic lash adjuster incorporated in the cylinder head of the engine, and configured to adjust a valve clearance of an intake valve and of an exhaust valve to zero, the intake valve and the exhaust valve being different from the intake valve and the exhaust valve whose operation is stopped by the valve stopping mechanism;a valve stopping oil passage which supplies hydraulic oil to the valve stopping mechanism;a control valve which controls the supply of hydraulic oil to the valve stopping oil passage during driving of the engine; anda communication oil passage which communicates between the valve stopping oil passage and the specific hydraulic oil supply passage, and provided with a ...

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Номер записи: 84
24-09-2020 дата публикации

Sliding Contact For Electrically Actuated Rocker Arm

Номер: US20200300129A1
Автор: BENJEY Robert Philip, Campbell Michael J., Cecrle Jiri, Drabek Tomas, Gillette Nicholas Peter, JR. James Edward, Liskar Petr, McCarthy, Spoor Anthony Leon, Stanton Michael James, STRETCH Dale Arden, Tembreull Thomas Michael, VanDeusen Brian Karl, Yankovic Eric John, Zurface Austin Robert
Принадлежит:

A valvetrain for an internal combustion engine of the type that has a combustion chamber, a moveable valve having a seat formed in the combustion chamber, and a camshaft includes a rocker arm assembly, a pivot providing a fulcrum for a rocker arm of the rocker arm assembly, and a latch assembly. An electrical device mounted to the rocker arm assembly receives power or communicates through a circuit that includes an electrical connection formed by abutment between surfaces of two distinct parts. The rocker arm assembly is operative to move one of the two abutting surfaces relative to the other in response to actuation of the cam follower. Forming an electrical connection through abutting surfaces that are free to undergo relative motion may reduce or eliminate the need to run wires to a mobile portion of the rocker arm assembly. 1. A valvetrain for an internal combustion engine of a type that has a combustion chamber , a moveable valve having a seat formed in the combustion chamber , and a camshaft , the valvetrain comprising:a rocker arm assembly comprising a rocker arm and a cam follower configured to engage a cam mounted on the camshaft as the camshaft rotates;an electromagnetic latch assembly comprising a latch pin translatable between a first position and a second position and a coil that is mounted on the rocker arm; andan electrical circuit that include the coil and an electrical connection made by abutment between a first surface belonging to a first part and a second surface belonging to a second part;wherein the rocker arm assembly is operative to move the first surface relative to the second surface in response to actuation of the cam follower; andthe electromagnetic latch assembly provides the latch pin with positional stability independently from the coil when the latch pin is in the first position and when the latch pin is in the second position.2. The valvetrain of claim 1 , wherein the electromagnetic latch assembly comprises a permanent magnet that ...

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Номер записи: 85
02-11-2017 дата публикации

HYDRAULIC CIRCUIT FOR VALVE DEACTIVATION

Номер: US20170314430A1
Автор: Beyer Theodore, Crowe Jonathan Denis, Keenan Joseph, LaCroix Jon Michael, PATANIS Charles Joseph
Принадлежит:

Methods and systems are provided for deactivating a valve actuation mechanism. In one example, a system may include a hydraulic gallery that may deliver a restricted flow of hydraulic fluid from a hydraulic flow restrictor to a pressure relief valve within a valve deactivation oil control valve, and during a second condition may deliver an unrestricted flow of hydraulic fluid from the valve deactivation oil control valve to the hydraulic flow restrictor. The hydraulic flow restrictor may comprise two vertical bores within the camshaft carrier that are fluidically coupled via a restrictive groove on the bottom surface of the camshaft carrier. 116-. (canceled)17. A method for a cylinder deactivation hydraulic circuit , comprising: 'flowing oil at a first pressure from a hydraulic flow restriction to a SRFF switching chamber via an oil gallery; and', 'during a first condition,'} 'flowing oil at a second pressure from a poppet valve deactivation control valve to the SRFF switching chamber via the oil gallery;', 'during a second condition,'}wherein said hydraulic flow restriction comprises a lateral groove coupling a first oil filter bore and a second oil filter bore, said second oil filter bore directly coupled to the oil gallery.18. The method of claim 17 , wherein flowing oil at the first pressure includes flowing oil from the hydraulic flow restriction to a pressure relief valve within the poppet valve deactivation control valve claim 17 , and wherein flowing oil at the second pressure includes flowing oil from the poppet valve deactivation control valve to the hydraulic flow restriction.19. The method of claim 18 , wherein the first condition is an activated cylinder condition claim 18 , and wherein the second condition is a deactivated cylinder condition.20. The method of claim 19 , wherein the first pressure is less than the second pressure. The present description relates generally to valve actuating mechanisms for engines.Variable displacement engines may employ ...

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Номер записи: 86
10-10-2019 дата публикации

THREE ROLLER ROCKER ARM WITH OUTBOARD LOST MOTION SPRING

Номер: US20190309659A1
Автор: Vance Matthew A.
Принадлежит: Eaton Intelligent Power Limited

A rocker arm can comprise a first outer arm and a second outer arm joined by a pivot body. An actuatable latch mechanism is within the pivot body. An inner arm assembly comprises a latch arm. A first spring prop is on the inner arm assembly distal from the latch arm. An axle joins the inner arm assembly to pivot between the first outer arm and the second outer arm. A spring is biased against the first outer arm and against the first spring prop. The first spring prop can comprise a hooked end. Or, the first spring prop can extend laterally out from the rocker arm and parallel to the axle. The spring can comprise a one-piece spring comprising first and second coil springs connected by a lateral connector. Or, two separate torsion springs can comprising tangential spring ends extending at approximately 90 degrees. 1. A rocker arm , comprising:a first outer arm and a second outer arm joined by a pivot body;an actuatable latch mechanism within the pivot body;an inner arm assembly comprising a latch arm;a first spring prop on the inner arm assembly distal from the latch arm;an axle joining the inner arm assembly to pivot between the first outer arm and the second outer arm; anda spring biased against the first outer arm and against the first spring prop.2. The rocker arm of claim 1 , further comprising a second spring prop on the inner arm assembly distal from the latch arm.3. The rocker arm of claim 2 , wherein the spring comprises a lateral connector spanning across the first spring prop and across the second spring prop claim 2 , and wherein the spring connects a second spring to further bias against the second outer arm and against the second spring prop.4. The rocker arm of claim 1 , wherein the first spring prop comprises a hooked end to limit motion of the spring.5. The rocker arm of claim 4 , further comprising an outer arm connector connected to the first outer arm and to the second outer arm claim 4 , wherein the outer arm connector provides a travel stop for ...

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Номер записи: 87
10-10-2019 дата публикации

THREE ROLLER ROCKER ARM WITH CANTILEVERED ROLLERS AND LOST MOTION SPRING OVER VALVE OR OVER ROCKER ARM PIVOT

Номер: US20190309660A1
Автор: Vance Matthew A.
Принадлежит: Eaton Intelligent Power Limited

A rocker arm, comprises a first outer arm comprising a first inner side and a first outer side, the first outer side comprising a first cantilevered post. A first outer roller is mounted to the first cantilevered post. A second outer arm comprises a second inner side and a second outer side, the second inner side facing the first inner side, the second outer side comprising a second cantilevered post. A second outer roller is mounted to the second cantilevered post. A pivot body joins the first inner side to the second inner side. An actuatable latch mechanism is within the pivot body. An inner arm assembly comprises a latch arm, the latch arm pivotable adjacent the pivot body. A pivot axle joins the inner arm assembly to pivot between the first outer arm and the second outer arm. 1. A rocker arm for a valve train , comprising:a main body comprising a pivot end, a valve end, a first outer side, and a second outer side;a first post connected to the first outer side and extending away from the first outer side;a second post connected to the second outer side and extending away from the second outer side oppositely from the first post;a latch mechanism within the pivot end of the main body, the latch mechanism comprising a latch finger configured to selectively move between a latched position, wherein the latch finger extends towards the valve end, and an unlatched position, wherein the latch finger withdraws away from the valve end, the latch finger comprising a latch surface;an inner arm assembly pivoting from the valve end between the first outer side and the second outer side, the inner arm assembly comprising a latch arm pivotable from a position above the latch surface to a position below the latch finger;a first roller connected to rotate on the first post;a second roller connected to rotate on the second post; andat least one biasing mechanism biasing the latch arm towards the position above the latch surface.2. The rocker arm of claim 1 , further comprising an ...

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Номер записи: 88
08-11-2018 дата публикации

Switching rocker arm having cantilevered rollers

Номер: US20180320603A1
Автор: Guruprasath Alagarsamy, James E. McCarthy, Jr., Matthew Vance
Принадлежит: Eaton Intelligent Power Ltd

A switching rocker arm comprises an outer arm having a pair of integrally formed axles extending outwardly therefrom and an inner arm pivotally secured to the outer arm. A is latch slidably connected to the outer arm and is configured to selectively extend to engage the inner arm. An inner roller is configured on the inner arm, and a pair of outer rollers is mounted on the respective integrally formed axles on the outer arm. A rocker arm for variable valve lift comprises an outer arm comprising outer arm portions, rollers mounted in a cantilevered manner to the outer arm portions, and an inner arm seated between the outer arm portions, the inner arm comprising an inner roller. A pivot axle connects the outer arm and the inner arm. The inner arm and the outer arm are pivotable with respect to one another about the pivot axle.

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Номер записи: 89
08-10-2020 дата публикации

Actuation apparatus

Номер: US20200318500A1
Автор: Fabrizio Dallacqua, Gennaro BUONOCORE, Michele Cecchi
Принадлежит: Eaton Intelligent Power Ltd

An actuation transmission apparatus for actuating a component of a switchable valve train device of an internal combustion engine includes: a shaft rotatable by an actuation source; a contacting element for contacting the component of the switchable valve train device; and a biasing device for biasing the contacting element rotationally with respect to the shaft; wherein, in use, the biasing device becomes biased by the shaft when the actuation source rotates the shaft when the actuation source attempts to actuate the component of the switchable valve train device, via the contacting element, when the component of the switchable valve train device is not able to be actuated, whereby the biasing device is configured to cause the contacting element to actuate the component of the switchable valve train device when the component of the switchable valve train device becomes actuatable again.

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Номер записи: 90
03-12-2015 дата публикации

Switchable rocker arm with improved switching response time

Номер: US20150345343A1
Автор: Cynthia A. Tawaf, Gregory J. Naber, Ian R. Jermy, Jongmin Lee
Принадлежит: Delphi Technologies Inc

A rocker arm includes a follower which follows a first lobe of a camshaft and is mounted to a rocker arm body; a lock pin that is selectively moveable in a lock bore between a first position and a second position in order to prevent relative movement between the rocker arm body and the follower in one of the first position and the second position and to permit relative movement between the rocker arm body and the follower in the other of the first position and the second position; and a rocker arm oil passage in fluid communication with the lock bore for communicating oil therethrough to move the lock pin between the first position and the second position. The rocker arm oil passage is elongated in a circumferential direction relative to the lock bore.

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Номер записи: 91
10-12-2015 дата публикации

LINKAGE BETWEEN AN AUXILIARY MOTION SOURCE AND A MAIN MOTION LOAD PATH IN AN INTERNAL COMBUSTION ENGINE

Номер: US20150354418A1
Автор: BALTRUCKI Justin, Ferreira David, JO Peter, WAMANE Neenad
Принадлежит:

In an internal combustion engine, a linkage is provided between an auxiliary motion source and a main motion load path, such that motions received by the linkage from the auxiliary motion source result in provision of a first force to at least one engine valve and a second force to the main motion load path in a direction toward a main motion source. Where an automatic lash adjuster is associated with the main motion load path, the second force may be selected to aid in the control of lash adjustments made by the automatic lash adjuster. In various embodiments, the linkage may be embodied in an mechanical linkage, whereas in other embodiments, an hydraulic linkage may be employed. The linkage may be incorporated into, or otherwise cooperate, a valve bridge or a rocker arm. 1. A system for use in an internal combustion engine having at least one engine valve associated with a cylinder , the system comprising:a main motion source configured to supply motions to the at least one engine valve along a main motion load path;an auxiliary motion source configured to supply motions to the at least one engine valve; anda linkage configured to receive the motions from the auxiliary motion source and provide a first force to the at least one engine valve and a second force to the main motion load path in a direction toward the main motion source.2. The system of claim 1 , the linkage further comprising a mechanical linkage.3. The system of claim 1 , the linkage further comprising an hydraulic linkage.4. The system of claim 1 , wherein two engine valves are associated with the cylinder claim 1 , the system further comprising:a valve bridge operatively connected to the two engine valves and disposed within the main motion load path.5. The system of claim 4 , the linkage further comprising:an auxiliary motion receiving surface on the valve bridge configured to induce rotation of the valve bridge responsive to motions received from the auxiliary motion source.6. The system of claim ...

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Номер записи: 92
30-11-2017 дата публикации

Rocker Motion-Powered Generators For Rocker-Mounted Electronic Devices

Номер: US20170342866A1
Автор: Genise David Gerard, JR. James Edward, McCarthy
Принадлежит: EATON CORPORATION

An internal combustion engine has a valvetrain that includes a rocker arm assembly on which is mounted an electronic device and at least a part of a generator. The generator converts some of the mechanical energy that is transmitted through the rocker arm assemblies into electricity. That electricity may be used to power an electric latch, a transmitter, or another type of rocker arm assembly-mounted electrical device. Various generator configurations are described. In some configurations, the generator is piezoelectric. In other configurations, the generator is electromagnetic. In some configurations, the generator is driven by force transmitted by the rocker arm assembly from a cam. In some configurations, the generator is driven by vibrations. 1. A valvetrain , comprising:a cam shaft on which is mounted an eccentrically shaped cam;a poppet valve;a rocker arm assembly configured to engage the cam as the cam shaft rotates and operative to actuate the valve;a generator operative to convert mechanical energy into electric energy; andan electrical device, which is distinct from the generator, mounted on the rocker arm assembly;wherein a portion of the generator comprising a pole is mounted on the rocker arm assembly;the generator is configured to power the electrical device, the configuration including an electrical connection between the electrical device and the pole; and the generator is driven by the cam.2. (canceled)3. A valvetrain according to claim 1 , wherein:the generator is an electromagnetic generator comprising a coil and a magnet configured to move relative to one another in a first direction as the cam is rising off base circle and in the opposite direction as the cam is descending toward base circle; andthe coil is mounted to the rocker arm assembly.4. A valvetrain according to claim 1 , wherein:the rocker arm assembly comprises a cam roller configured to follow the cam;the generator is an electromagnetic generator comprising a coil and a magnet ...

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Номер записи: 93
07-11-2019 дата публикации

Sliding Contact For Electrically Actuated Rocker Arm

Номер: US20190338680A1
Автор: BENJEY Robert Philip, Campbell Michael J., Cecrle Jiri, Drabek Tomas, Gillette Nicholas Peter, JR. James Edward, Liskar Petr, McCarthy, Spoor Anthony Leon, Stanton Michael James, STRETCH Dale Arden, Tembreull Thomas Michael, VanDeusen Brian Karl, Yankovic Eric John, Zurface Austin Robert
Принадлежит: Eaton Intelligent Power Limited

A valvetrain for an internal combustion engine of the type that has a combustion chamber, a moveable valve having a seat formed in the combustion chamber, and a camshaft includes a rocker arm assembly, a pivot providing a fulcrum for a rocker arm of the rocker arm assembly, and a latch assembly. An electrical device mounted to the rocker arm assembly receives power or communicates through a circuit that includes an electrical connection formed by abutment between surfaces of two distinct parts. The rocker arm assembly is operative to move one of the two abutting surfaces relative to the other in response to actuation of the cam follower. Forming an electrical connection through abutting surfaces that are free to undergo relative motion may reduce or eliminate the need to run wires to a mobile portion of the rocker arm assembly. 1. A valvetrain for an internal combustion engine of a type that has a combustion chamber , a moveable valve having a seat formed in the combustion chamber , and a camshaft , the valvetrain comprising:a rocker arm assembly comprising a rocker arm and a cam follower configured to engage a cam mounted on the camshaft as the camshaft rotates; andan electrical circuit comprising an electrical device mounted to the rocker arm;wherein the electrical circuit includes an electrical connection made by abutment between a first surface belonging to a first part and a second surface belonging to a second part;the first part projects outwardly to a side of the rocker arm; andthe rocker arm assembly is operative to move the first surface relative to the second surface in response to actuation of the cam follower.2. A valvetrain according to claim 1 , wherein the first surface has a normal vector that is perpendicular to a direction in which the first part projects from the rocker arm.3. A valvetrain according to claim 1 , wherein:the rocker arm assembly has a pivot axis; andthe electrical connection is made proximate the pivot axis.4. A valvetrain ...

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Номер записи: 94
29-12-2016 дата публикации

ROCKER ARM ASSEMBLY AND METHOD OF FORMING RETENTION ELEMENTS IN A ROCKER ARM

Номер: US20160376937A1
Автор: Brune John Edmund, Smith Scott P.
Принадлежит: GT TECHNOLOGIES

An assembly for a valvetrain having a valve, a lash adjuster, and a lobe. The assembly includes a shaft, a bearing supported by the shaft for engaging the lobe, and a rocker having a pad for the valve and a socket for the lash adjuster. Walls are disposed between the pad and socket, have inner and outer wall surfaces, and define a valley for the shaft. Upwardly-opening arc-shaped bearing surfaces are disposed longitudinally between the pad and socket spaced laterally from each other and support the shaft when the bearing engages the lobe. A retention element formed in each wall with a depressed portion spaced from the outer wall surface and a lip portion arranged under the depressed portion extends into the valley above the bearing surfaces such that the shaft is prevented from moving out of the valley in absence of engagement between the bearing and the lobe. 1. A rocker arm assembly for use in an internal combustion engine valvetrain having a valve , a lash adjuster , and a camshaft having a lobe; said rocker arm assembly comprising:a shaft;a bearing rotatably supported by said shaft for engaging the lobe of the camshaft; and a pad for engaging the valve,', 'a socket spaced from said pad for engaging the lash adjuster,', 'a pair of walls disposed between said pad and said socket with each of said walls having an inner wall surface and an outer wall surface, said walls defining a valley between said inner wall surfaces for accommodating said shaft,', 'a pair of upwardly-opening arc-shaped bearing surfaces spaced laterally from each other and disposed longitudinally between said pad and said socket for rotatably supporting said shaft when said bearing engages the lobe of the camshaft, and', 'a retention element formed in each of said walls with a depressed portion spaced laterally from said outer wall surface and a lip portion arranged under said depressed portion and extending from said wall at least partially into said valley, said lip portions of said retention ...

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Номер записи: 95
20-12-2018 дата публикации

ENGINE VALVE LIFTER HAVING ANTI-ROTATION PLUG

Номер: US20180363513A1
Автор: JR. James E., Matson Kevin, McCarthy, Roberts Leighton, Schultheis Otto, Vance Matthew, WRIGHT DOUGLAS
Принадлежит: Eaton Intelligent Power Limited

An engine roller lifter for use in a leak-valvetrain of an internal combustion engine includes a body, a roller and an anti-rotation plug. The body includes an outer peripheral surface configured for sliding movement in a bore provided in the engine. The bore is supplied oil by an oil passage communicating therewith. The body defines an opening. The roller bearing is rotatably mounted to the body and is configured for rolling contact with an engine camshaft. The anti-rotation plug is received at the opening and has a plug body including an anti-rotation protrusion that extends radially beyond an outer peripheral surface of the plug body. The anti-rotation plug can be staked into the opening of the body. 1. An engine roller lifter for use in a valvetrain of an internal combustion engine , the engine roller lifter comprising:a body having an outer peripheral surface configured for sliding movement in a bore provided in the engine, the bore supplied oil by an oil passage communicating therewith, the body defining an opening and a relief;a roller bearing rotatably mounted to the body and configured for rolling contact with an engine camshaft; andan anti-rotation plug received at the opening, the anti-rotation plug having a plug body including an anti-rotation protrusion that extends radially beyond an outer peripheral surface of the plug body, wherein the anti-rotation plug is staked into the opening of the body.2. The engine roller lifter of wherein the anti-rotation plug is staked into the opening of the body such that material from the body that is displaced during the staking is accommodated at the relief.3. The engine roller lifter of wherein the plug body attains an interference fit with an inner diameter of the opening subsequent to and as a result of the staking.4. The engine roller lifter of wherein plug body further includes first and second face surfaces formed on opposite sides of the anti-rotation protrusion claim 3 , wherein the anti-rotation plug is ...

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Номер записи: 96
12-11-2020 дата публикации

MECHANICAL RETENTION MEMBER FOR VALVETRAIN COMPONENTS

Номер: US20200355094A1
Автор: BELLINGER Steven M., Boggs Troy, Gonzalez Richard, HAEGELE Glen T., Mitchum Gregory J.
Принадлежит:

A retention member is configured to be supported within a cylinder head of an engine and includes a body portion and a plurality of arms. The body portion has an opening configured to receive a fuel injector of the engine. Additionally, the plurality of arms extends from the body portion and is configured to be positioned over a portion of a cross-head of the engine. The plurality of arms is spaced apart from the cross-head during routine operation of the engine. 1. A retention member configured to be supported within a cylinder head of an engine , comprising:a body portion having an opening configured to receive a fuel injector of the engine; anda plurality of arms extending from the body portion and configured to be positioned over a portion of a cross-head of the engine, the plurality of arms being spaced apart from the cross-head during routine operation of the engine.2. The retention member of claim 1 , wherein the body portion includes apertures configured to receive removable mechanical fasteners claim 1 , and the body portion is removably coupled with the cylinder head through the removable mechanical fasteners.3. The retention member of claim 1 , wherein the body portion is integrally formed with the plurality of arms.4. The retention member of claim 3 , wherein the body portion and plurality of arms are comprised of a metallic stamping.5. The retention member of claim 1 , wherein each of the plurality of arms defines an upside-down U shape configured to receive a portion of the cross-head within a recess of the U shape.6. The retention member of claim 1 , wherein the body portion and the plurality of arms are stationary relative to movement of the cross-head.7. The retention member of claim 1 , wherein the plurality of arms is configured to retain a position of the cross-head during movement of the cross-head which contacts at least one of the plurality of arms.8. The retention member of claim 1 , wherein the body portion is coupled to a clamp of the fuel ...

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Номер записи: 97
28-11-2019 дата публикации

ENGINE VALVE SYSTEM

Номер: US20190360369A1
Автор: Lancefield Timothy Mark, Methley Ian, WALTON MARK, Webb Kyle
Принадлежит: MECHADYNE INTERNATIONAL LTD.

A valve system for an engine includes two cams each having a follower, a summation lever coupled to the followers, a lash adjuster, a valve actuating rocker pivotably coupled to the summation lever and resting on the lash adjuster, a control spring urging the summation lever to compress the lash adjuster, a stop limiting an expansion of the control spring, a bore, a plunger which moves in the bore, and an abutment surface. The control spring acts on the summation lever via the plunger. A plunger end engages with the summation lever. A point of contact between the plunger and the summation lever is displaced in a direction transverse to a plunger axis during a pivoting movement of the summation lever. A plunger shoulder is arranged a distance from the plunger end to contact the abutment surface to limit a plunger displacement in a direction compressing the lash adjuster. 115-. (canceled)16. A valve system for an engine which comprises an engine block , the valve system comprising:two cams which are coaxially mounted, each of the two cams comprising a follower;a summation lever coupled to each follower of the two cams, the summation lever being configured to perform a pivoting movement and to be movable in proportion to a sum of an instantaneous lift of each of the two cams;a hydraulic lash adjuster;a valve actuating rocker arranged to be pivotably coupled to the summation lever and to rest on the hydraulic lash adjuster, the valve actuating rocker being configured to operatively displace an engine valve in dependence upon a movement of the summation lever;a control spring configured to urge the summation lever in a direction to compress the hydraulic lash adjuster;a stop configured to limit an expansion of the control spring;a bore arranged to be stationary relative to the engine block;a plunger comprising a shoulder and an end, the plunger being arranged to reciprocate linearly within the bore; andan abutment surface arranged to be stationary relative to the engine ...

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Номер записи: 98
03-12-2020 дата публикации

CYLINDER HEAD

Номер: US20200378279A1
Автор: Onishi Takakazu
Принадлежит:

A cylinder head, where a pivot member configured to pivotably support a rocker arm is fastened with a bolt, is provided. The cylinder head includes a bottom wall part forming an inner bottom surface of a cam chamber that is a space where the rocker arm is disposed, and a side wall part forming an internal surface continuously rising from the inner bottom surface. A bolt hole into which the bolt is inserted is formed in the inner bottom surface. The side wall part has a protrusion protruding inward in the cam chamber from the internal surface at a position separated from the inner bottom surface, and a support hole configured to support the pivot member is formed in the protrusion. 1. A cylinder head , where a pivot member configured to pivotably support a rocker arm is fastened with a bolt , comprising:a bottom wall part forming an inner bottom surface of a cam chamber that is a space where the rocker arm is disposed; anda side wall part forming an internal surface continuously rising from the inner bottom surface,wherein a bolt hole into which the bolt is inserted is formed in the inner bottom surface, andwherein the side wall part has a protrusion protruding inward in the cam chamber from the internal surface at a position separated from the inner bottom surface, and having a support hole configured to support the pivot member.2. The cylinder head of claim 1 , wherein a part of the internal surface claim 1 , facing a space between the protrusion and the inner bottom surface claim 1 , is recessed in a direction along the inner bottom surface heading away from the bolt hole.3. The cylinder head of claim 2 , wherein the recessed part of the internal surface has a curved shape in cross-section.4. The cylinder head of claim 2 , wherein the recessed part of the internal surface has a rectangular shape in cross-section.5. The cylinder head of claim 1 , wherein the pivot member is a lash adjuster of hydraulic operation type configured to automatically and hydraulically ...

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Номер записи: 99
12-12-2019 дата публикации

Variable valve drive of a combustion piston engine

Номер: US20190376420A1
Автор: Dimitri Schott, Harald Elendt
Принадлежит: Schaeffler Technologies AG and Co KG

The invention relates to a variable valve drive of an internal combustion engine, comprising at least one functionally identical gas exchange valve per cylinder, the valve stroke of which is specified by at least one primary cam and at least one secondary cam of a camshaft. The valve stroke can be selectively transmitted to the at least one gas exchange valve by a switchable cam follower which has a primary lever and a secondary lever. A coupling element of the switchable cam follower is designed as a coupling pin which is guided in a transverse bore of the primary follower, which can be moved into an opposite coupling bore of the secondary lever by a switching pin. An outer end of the switching pin is connected to a switching rod via a connecting element, the switching rod arranged parallel to the camshaft and longitudinally movable by an actuator.

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Номер записи: 100