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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 3164. Отображено 100.
12-01-2012 дата публикации

Valve drive of an internal combustion engine

Номер: US20120006292A1
Автор: Andreas Nendel, Harald Elendt
Принадлежит: Schaeffler Technologies AG and Co KG

A valve drive of an internal combustion engine with variable-lift gas exchange valve actuation. The valve drive has a camshaft with a support shaft and a cam piece arranged on the support shaft for conjoint rotation therewith and to be movable between axial positions. The cam piece has two cam groups of directly adjacent cams with different elevations and, on the end side, the cam piece has an axial slotted guide into which can be coupled an actuating element. The cam piece has a bearing journal which runs between the cam groups and rotatably mounted in a camshaft bearing point arranged in a positionally fixed manner in the engine. Here, the diameter of the bearing journal is larger than the envelope circle diameter of a cam closest to the bearing journal with the cam and camshaft bearing point overlapping axially in an axial position of the cam piece.

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Номер записи: 1
07-06-2012 дата публикации

Variable valve train for internal combustion engines for actuating gas exchange valves

Номер: US20120138001A1
Автор: Andreas Werler, Heiko Neukirchner, Joerg Wutzler, THOMAS Arnold
Принадлежит: IAV GMBH INGENIEURGESELLSCHAFT AUTO UND VERKEHR

A variable valve train for actuating a plurality of gas exchange valves of an internal combustion engine includes a plurality of individual cam sleeves axially displaceable relative to one another and disposed so as to form the camshaft. Each of the plurality of individual cam sleeves include a plurality of different cam profiles. A switching shaft is disposed inside the plurality of cam sleeves and is configured to rotate together with the plurality of cam sleeves. A switching ball operatively connects one of the plurality of cam sleeves to a switching contour disposed on the switching shaft. A displacement piece is disposed so as to be rotationally engaged but axially displaceable on one of the plurality of cam sleeves and connected to the switching shaft. An actuator is operatively connectable to the displacement piece by the switching ball so as to displace the one of the plurality of cam sleeves.

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Номер записи: 2
31-01-2013 дата публикации

Valve drive for internal combustion engines for actuating gas exchange valves

Номер: US20130025554A1
Автор: Andreas Werler, Jochen Luedemann, Joerg Wutzler, THOMAS Arnold, Uwe Parsche
Принадлежит: IAV GMBH INGENIEURGESELLSCHAFT AUTO UND VERKEHR

A valve drive device for switching the stroke of gas exchange valves of an internal combustion engine includes a camshaft configured, at least in part, as a hollow shaft. A cam unit includes at least two different cams disposed on the camshaft so as to be rotationally engaged and axially displaceable with respect thereto. An adjustment sleeve is disposed so as to be rotationally engaged on an adjustment shaft and rotatable and axially displaceable inside the camshaft. The adjustment sleeve includes thereon a closed adjustment contour extending about a circumference of the adjustment sleeve and is operatively connected to the cam unit through an adjustment clearance in the camshaft via a first coupling element configured to permanently engage in the adjustment contour. A further coupling element is configured to permanently engage in the adjustment contour and connect to the camshaft so as to be fixed in position.

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Номер записи: 3
21-02-2013 дата публикации

Valve operating apparatus for internal combustion engine

Номер: US20130042830A1
Автор: Akihiko Kawata, Akio Kidooka
Принадлежит: Toyota Motor Corp

Provided is a valve operating apparatus for an internal combustion engine that, with respect to a configuration including urging means that urges a transfer member that transfers an acting force of a cam to a valve, can facilitate manufacture of a support portion of the urging means and suppress an increase in the mass of the internal combustion engine. A first rocker arm is provided that is interposed between a main cam and a valve and that transfers an acting force of the main cam to the valve. A lost motion mechanism is provided that urges the first rocker arm in one direction. A holding member is provided that holds the lost motion mechanism. The lost motion mechanism is attached to a spark plug tube through the holding member.

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Номер записи: 4
22-08-2013 дата публикации

Variable valve apparatus for internal combustion engine

Номер: US20130213329A1
Автор: Makoto Nakamura
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

A variable valve apparatus for an internal combustion engine includes a control shaft, a camshaft having first and second camshaft members rotatable relative to each other, a rotary cam rotating together with the second camshaft member for opening and closing of an exhaust valve, an eccentric drive cam rotating together with the first camshaft member, a rocker arm caused to swing with rotation of the eccentric drive cam, a swing cam caused to swing by the rocker arm for opening and closing of an intake valve, a control cam formed on the control shaft to change an operating position of the rocker arm according to a rotational phase of the control shaft and vary the amount of swinging movement of the swing cam, a phase control mechanism adapted to control a relative rotational phase of the first and second camshaft members and an actuator for rotating the control shaft.

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Номер записи: 5
05-09-2013 дата публикации

Sliding cam system havnig slide grooves and locking means

Номер: US20130228039A1
Автор: Andreas Nendel
Принадлежит: Schaeffler Technologies AG and Co KG

A sliding cam system having sliding cams ( 1 ) which are arranged so as to be non- rotatable yet axially displaceable on a main shaft, preferably on a shaft serving as the camshaft of a reciprocating internal combustion engine, having a preferably electromagnetically operable device including at least one extendable actuator pin ( 6 ) for displacing the sliding cams into different axial positions via the displacement grooves ( 3 ) on the circumference of the sliding cams, wherein the displacement grooves interact with the actuator pin ( 6 ) and a displacement device ( 5 ) is fixedly arranged on a component of the internal combustion engine. The system has a device for locking the sliding cams ( 1 ) in different axial positions, and the locking device includes at least one recess associated with each axial position. The recesses are in the form of locking grooves ( 2 ) on a circumference of the sliding cams ( 1 ) and the entry and exit regions of the displacement grooves ( 3 ) lie in the planes of two adjacent locking grooves ( 2 ).

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Номер записи: 6
21-11-2013 дата публикации

Internal combustion engine valve actuation control arrangement

Номер: US20130306014A1
Автор: Alexander Von Gaisberg-Helfenberg, Thomas Stolk
Принадлежит: DAIMLER AG

In an internal combustion engine a valve actuation control arrangement is provided, which has at least three independently axially displaceable cam elements and a switch gate which has at least one continuous gate track for displacing the at least three cam elements sequentially one after the other.

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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
07-01-2021 дата публикации

Electromagnetic Control Device, In Particular for Adjusting Camshafts of an Internal Combustion Engine

Номер: US20210003047A1
Автор: Kammerer Andreas, Marull-Kessler Pedro, SUZUKI Tsuneo, Tischtschenko Michael
Принадлежит: Kendrion (Villingen) GmbH

The application relates to an electromagnetic control device, in particular for adjusting camshafts or a camshaft section of an internal combustion engine, comprising: an energizable coil unit via which, in the energized state, an armature mounted for movement along a longitudinal axis of the control device can be moved relative to a pole core between a retracted position and an extended position; a tappet which interacts with the armature and is mounted for movement along the longitudinal axis, having a free end, via which the tappet interacts with the camshaft in the extended position in order to adjust the camshaft; and an adapter, via which the control device can be fastened to a component, in particular to cylinder head cover, wherein the armature and the tappet are connected to each other for conjoint rotation, and the control device has a first bearing section inside the adapter for rotatable mounting of the tappet and a second bearing section outside of the adapter for rotatable mounting of the tappet and/or the armature. 1. An electromagnetic control device , comprising:an armature;an energizable coil unit, with which the armature is mounted to be movable along a longitudinal axis of the control device in an energized condition and is movable between a retracted position and an extended position relative to a pole core;a tappet which interacts with the armature and is mounted for movement along the longitudinal axis and has a free end by which the tappet interacts with a camshaft in the extended position for adjusting the camshaft;an adapter to a cylinder head cover;a first bearing section within the adapter for rotational bearing of the tappet;a second bearing section outside of the adapter for rotatable mounting of the tappet and/or the armature; andwherein the armature and the tappet are connected to one another for conjoint rotation.2. The control device according to claim 1 , wherein the second bearing section is made of a nonmagnetic or ...

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Номер записи: 9
03-01-2019 дата публикации

VARIABLE VALVE OPERATING APPARATUS

Номер: US20190003351A1
Автор: Kataoka Dai, TAKADA Yoshihiro
Принадлежит: HONDA MOTOR CO., LTD.

An engine variable valve operating apparatus includes a cam switching mechanism having a switching drive shaft. When the switching drive shaft is longitudinally moved, a cam mechanism advances and retracts a switching pin. When the switching pin is advanced to engage in a lead groove formed around a cam carrier and the cam carrier is axially moved while rotating, cam lobes around the cam carrier are switched to act on an engine valve. An actuator for the switching drive shaft includes an actuator drive body which is linearly reciprocally movable and is coupled to a longitudinal end of the switching drive shaft to axially move the same. The above arrangement enables the cam switching mechanism and the actuator mechanism to be simple and compact in structure for preventing the engine from becoming large in size. 1. A variable valve operating apparatus comprising:a camshaft rotatably mounted in a cylinder head superposed on a cylinder block of an internal combustion engine;a cam carrier in the form a hollow cylindrical member relatively non-rotatably and axially slidably fitted around the camshaft and including, on an outer circumferential surface thereof, a plurality of cam lobes having different cam profiles and disposed axially adjacent to each other; anda cam switching mechanism for axially moving the cam carrier to switch the cam lobes to act on an engine valve; a lead groove formed in an outer circumferential surface of the cam carrier and extending fully circumferentially therearound;', 'a switching pin capable of being advanced to engage in and retracted to disengage from the lead groove;', 'a switching drive shaft disposed parallel to the camshaft to be movable longitudinally thereof so as to cooperate with the switching pin to constitute a cam mechanism for advancing and retracting movements of the switching pin, in such a manner that the advancing movement causes the switching pin to engage in the lead groove so as to axially move the cam carrier while ...

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Номер записи: 10
03-01-2019 дата публикации

INTERNAL COMBUSTION ENGINE

Номер: US20190003352A1
Автор: Kataoka Dai, TAKADA Yoshihiro
Принадлежит: HONDA MOTOR CO., LTD.

An internal combustion engine is provided with a variable valve operating apparatus, for use on a saddle-type vehicle. When a switching drive shaft is longitudinally moved under hydraulic pressure switched by a solenoid valve, a cam mechanism advances and retracts a switching pin. When the switching pin is advanced to engage in a lead groove in a cam carrier, the cam carrier is axially moved while rotating, to switch cam lobes to act on an engine valve. A solenoid valve is disposed on a left or right end in the leftward and rightward directions across the vehicle width, of a front or rear surface of a cylinder head. The solenoid valve is placed in an appropriate location in the cylinder head out of interference with other parts of the engine, thereby making the vehicle small in size. 1. An internal combustion engine for use on a saddle-type vehicle , including a cylinder block and a cylinder head stacked on and integrally fastened to a crankcase , the internal combustion engine having a variable valve operating apparatus comprising:a camshaft rotatably mounted in the cylinder head and oriented in leftward and rightward directions across a vehicle width;a cam carrier in the form of a hollow cylindrical member relatively non-rotatably and axially slidably fitted over the camshaft, the cam carrier including, on an outer circumferential surface thereof, a plurality of cam lobes having different cam profiles and disposed axially adjacent to each other; anda cam switching mechanism for axially moving the cam carrier to switch the cam lobes to act on an engine valve; a lead groove formed in an outer circumferential surface of the cam carrier and extending fully circumferentially therearound;', 'a switching pin capable of being advanced to engage in and retracted to disengage from the lead groove;', 'a switching drive shaft disposed parallel to the camshaft to be movable longitudinally thereof so as to cooperate with the switching pin to constitute a cam mechanism for ...

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Номер записи: 11
03-01-2019 дата публикации

VARIABLE VALVE TRAIN

Номер: US20190003353A1
Автор: Dietrich Jens, Hirschmann Steffen, MALISCHEWSKI Thomas
Принадлежит:

The disclosure concerns a variable valve train for an internal combustion engine, comprising a camshaft, a gas exchange valve and a cam carrier. The cam carrier is arranged rotationally fixedly and axially displaceably on the camshaft and has a first cam and a second cam. The variable valve train has a force transmission device with a force transmission element, in particular a finger follower or rocker arm, which, depending on an axial position of the cam carrier, creates an active connection either between the first cam and the gas exchange valve or between the second cam and the gas exchange valve. The variable valve train has a first actuator for axial displacement of the cam carrier, wherein the first actuator is received at least partially in the force transmission device. 1. A variable valve train for an internal combustion engine , comprising:a camshaft;a gas exchange valve;a cam carrier which is arranged rotationally fixedly and axially displaceably on the camshaft and has a first cam and a second cam;a force transmission device with a force transmission element, in particular a finger follower or rocker arm, which, depending on an axial position of the cam carrier, creates an active connection either between the first cam and the gas exchange valve or between the second cam and the gas exchange valve; anda first actuator for axial displacement of the cam carrier, wherein the first actuator is received at least partially in the force transmission device.2. The variable valve train according to claim 1 , wherein:the force transmission device has a lever shaft, in particular a rocker arm shaft or a finger follower shaft, andthe first actuator is received at least partially in the lever shaft.3. The variable valve train according to claim 1 , wherein:the force transmission device has a lever shaft bearing block, andthe first actuator is received at least partially in the lever shaft bearing block.4. The variable valve train according to claim 1 , wherein:the ...

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Номер записи: 12
03-01-2019 дата публикации

Determining sliding camshaft actuator pin position based on engine crankshaft angle

Номер: US20190003446A1
Автор: Dimitri Karatsinides, Douglas R. Verner, Timothy Karnjate, Timothy P. Philippart
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method of determining a sliding camshaft actuator pin position based on engine crankshaft angle includes commanding a sliding camshaft actuator to perform a valve step shift, and monitoring an actuator's pin position during the valve step shift command. At least one crank angle is measured when the actuator pin position reaches or exceeds at least one predetermined pin position threshold and at least one remedial action is performed when the actuator pin position does not correlate to the at least one measured crank angle.

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Номер записи: 13
08-01-2015 дата публикации

VALVE GEAR

Номер: US20150007789A1
Автор: KOBAYASHI Kaori, Matsumochi Yuji
Принадлежит: HONDA MOTOR CO., LTD.

Provided is a valve gear which achieves a reduced size and is capable of changing the valve opening timing of an engine valve and changing the length of the valve opening period thereof. A valve gear is provided with: a rotatable first camshaft; a first cam piece that is relatively unrotatably provided on the first camshaft; a second camshaft that is included in the first camshaft and coaxially rotatable; a second cam piece that is relatively unrotatably provided on the second camshaft; a housing; a first vane rotor that is relatively rotatable with respect to the housing; and a second vane rotor that is relatively rotatable with respect to the housing and the first vane rotor The first vane rotor is relatively unrotatably coupled to the second camshaft, and the second vane rotor is relatively rotatably coupled to the first camshaft. 18-. (canceled)9. A valve gear driving an engine valve of an internal combustion engine , comprising:a first camshaft rotatable around a rotation axis;a first cam piece driving the engine valve, the first cam piece being prohibited to rotate relative to the first camshaft;a second camshaft disposed inside the first camshaft, the second camshaft being rotatable around the rotation axis;a second cam piece driving the engine valve, the second cam piece being prohibited to rotate relative to the second camshaft;a housing;a first vane rotor housed in the housing, the first vane rotor being rotatable relative to the housing; anda second vane rotor housed in the housing, the second vane rotor being rotatable relative to the housing and the first vane rotor,wherein the first vane rotor is connected to one of the first camshaft and the second camshaft, being prohibited to rotate relative to the one,and wherein the second vane rotor is connected to the other one of the first camshaft and the second camshaft, being rotatable relative to the other one, the valve gear, further comprising:a first connecting member capable of switching between a ...

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Номер записи: 14
12-01-2017 дата публикации

Continuous variable valve timing apparatus and engine provided with the same

Номер: US20170009611A1
Автор: Back Sik Kim, Kyoung Pyo Ha, You Sang SON
Принадлежит: Hyundai Motor Co

A continuously variable valve timing apparatus may include a camshaft, a first and a second cam portions of which two cams are formed thereto, of which the camshaft is inserted thereinto and of which relative phase angles with respect to the camshaft are variable, a first and a second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively, a first and a second slider housings of which the first and second inner brackets are rotatably inserted thereinto respectively and of which relative positions with respect to the camshaft are variable, a control shaft connected with the slider housings and a control portion connected with the control shaft and selectively changing the positions of the inner brackets.

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Номер записи: 15
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: 16
14-01-2021 дата публикации

VARIABLE VALVE APPARATUS

Номер: US20210010397A1
Автор: BACK You-Seok, Choi Myung Sik
Принадлежит:

A variable valve apparatus includes: a swing body mounted to rotate to open and close a valve; an inner body driven by a cam and mounted in the swing body so as to switch a relatively-rotatable state and a latched state with respect to the swing body; a latching pin slidably mounted in the swing body so as to switch the latched state and the relatively-rotatable state of the inner body with respect to the swing body; and a control mechanism pressing the latching pin to make the inner body be latched to the swing body. 1. A variable valve apparatus comprising:a swing body mounted to rotate to open and close a valve;an inner body driven by a cam and mounted in the swing body so as to switch between a relatively-rotatable state and a latched state with respect to the swing body;a latching pin slidably mounted in the swing body so as to switch between the latched state and the relatively-rotatable state of the inner body with respect to the swing body; anda control mechanism pressing the latching pin to make the inner body be latched to the swing body.2. The variable valve apparatus of claim 1 , wherein a lower portion of a first side of the swing body is spherically supported by a supporting member claim 1 , and a lower portion of a second side of the swing body is in contact with a stem end of the valve claim 1 , such that the swing body rotates with respect to the supporting member to open and close the valve.3. The variable valve apparatus of claim 1 , wherein the inner body is mounted rotatably with respect to the swing body around a rotation axis parallel to a rotation axis of the swing body claim 1 , andan inner roller is rotatably mounted while keeping a state of being in contact with the cam to receive movement of the cam.4. The variable valve apparatus of claim 3 , wherein an inner spring is mounted between the inner body and the swing body to elastically support the inner roller of the inner body toward the cam claim 3 , anda swing roller is mounted in the ...

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Номер записи: 17
10-01-2019 дата публикации

CAM-SWITCHING DEVICE AND METHOD OF CONTROLLING CAM-SWITCHING DEVICE

Номер: US20190010839A1
Автор: TSUNODA Hiroshi
Принадлежит: Isuzu Motors Limited

A cam-switching device switches between first and second cams provided so as to correspond to intake exhaust valves of an engine. In a case of switching from the first cam to the second cam, a cylinder resting unit stops the opening and closing operations of the intake and exhaust valves in the same combustion cycle, and a cam shaft moving unit starts sliding the cam shaft in a first cam angle range. In a case of switching from the second cam to the first cam, the cylinder resting unit stops the opening and closing operations of the intake and exhaust valves in the same combustion cycle, and the cam shaft moving unit starts sliding the cam shaft in a second cam angle range. 1. A cam-switching device that selectively switches between a first cam and a second cam to make valve characteristics of intake and exhaust valves of an engine variable ,the first cam and the second cam being provided corresponding to each of the intake and exhaust valves and having different cam profiles,each of the cam profiles being determined such that a first cam angle range where a valve lift amount of the first cam is greater than a valve lift amount of the second cam and a second cam angle range where a valve lift amount of the second cam is greater than a valve lift amount of the first cam are formed, andthe cam-switching device comprising:a cam shaft configured to rotate in conjunction with a crank shaft of the engine and provided such that the first cam and the second cam are rotatable together;a cam shaft moving unit configured to slide the cam shaft in an axis direction to selectively switch between the first cam and the second cam;a cylinder resting unit configured to stop opening and closing operations of the intake and exhaust valves to make a cylinder restable; anda cam shaft moving control unit configured to control the cylinder resting unit to stop the opening and closing operations of the intake and exhaust valves in the same combustion cycle and control the cam shaft moving ...

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Номер записи: 18
10-01-2019 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20190010887A1
Автор: ADACHI Noriyasu, KAWAI Takayoshi, OTSUKA Kaoru, Sadakane Shinji, SASAKI Keisuke, SUGIHIRA Shigehiro
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An electronic control unit of a control device for an internal combustion engine executes, for a first cycle, first drive processing for controlling an actuator such that a pin drive operation is executed for switching from a first cam to a second cam, executes second drive processing for controlling the actuator such that the pin drive operation is executed again for a second cycle, and executes abnormality determination processing for determining that a cam switching mechanism has an abnormality in a case where a pin returns to a reference position by using a pin return section following a cam switching section of the first cycle after the execution of the first drive processing and the pin returns to the reference position by using the pin return section following the cam switching section of the second cycle after the execution of-the second drive processing. 1. A control device for an internal combustion engine comprising:a camshaft;a plurality of cams having different profiles; execute, for a first cycle, first drive processing for controlling the actuator such that the pin drive operation is executed for switching from the first cam to the second cam,', 'execute second drive processing for controlling the actuator such that the pin drive operation is executed again for a second cycle in which switching from the second cam to the first cam is not performed after the execution of the first drive processing, the second cycle being a cycle following the first cycle, and', 'execute abnormality determination processing for determining that the cam switching mechanism has an abnormality that the drive cam is not switched from the first cam to the second cam by the first drive processing in a case where the pin returns to the reference position by using the pin return section following the cam switching section of the first cycle after the execution of the first drive processing and the pin returns to the reference position by using the pin return section following ...

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Номер записи: 19
19-01-2017 дата публикации

VARIABLE VALVE MECHANISM OF INTERNAL COMBUSTION ENGINE

Номер: US20170016361A1
Автор: HIRAMATSU Naoki, SUGIURA Masatoshi, YAMAGUCHI Koki, YUGE Motohiro
Принадлежит:

In a variable valve mechanism of an internal combustion engine, when a slider is displaced relative to an input member and an output member in an axial direction, the output member turns relative to the input member in a swing direction, whereby a lift of a valve is increased or reduced. The variable valve mechanism is brought into a lift retaining state when the slider is placed in an idle running range located on a reducing direction side with respect to a boundary position. The lift retaining state is a state where when the slider is displaced in the axial direction, the input member and the output member are displaced together with the slider in the axial direction, so that the relative displacement of the slider and the relative turning of the output member do not occur and the lift of the valve is retained. 1. A variable valve mechanism of an internal combustion engine , comprising:an input member and an output member which are swingably disposed on a same axis, so that the output member drives a valve when the input member is driven by a cam;a slider that engages with the input member and the output member, so that when the slider is displaced relative to the input member and the output member in an axial direction as a longitudinal direction of the axis, the output member turns relative to the input member in a swing direction due to the engagement; anda displacement device that displaces the slider, so that when the displacement device displaces the slider in an increasing direction, or toward one side in the axial direction, the relative displacement of the slider occurs toward the one side in the axial direction and the relative turning of the output member occurs toward one side in the swing direction, whereby a lift of the valve is increased, and when the displacement device displaces the slider in a reducing direction, or toward the other side in the axial direction, the relative displacement of the slider occurs toward the other side in the axial ...

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Номер записи: 20
17-04-2014 дата публикации

Variable Valve Operation Control Method and Apparatus

Номер: US20140102385A1
Автор: Dante T. Boutell
Принадлежит: Toyota Motor Engineering and Manufacturing North America Inc

A control method and apparatus for a variable engine valve operating control mechanisms which move the engine valves to a safe lift/timing position with respect to a piston to minimize the potential for valve to piston contact during valve surge. At least one engine operating conditions is selected and provided with a threshold triggering a control to move the valves to a safe position in a calibrated, predictive manner in advance of any potential valve to piston contact. The control method and apparatus can be integrated into the existing engine control and variable valve operating control mechanism.

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Номер записи: 21
21-01-2021 дата публикации

SYSTEMS AND METHODS FOR A CRANK SENSOR HAVING MULTIPLE SENSORS AND A MAGNETIC ELEMENT

Номер: US20210017887A1
Автор: KELLY Sean M., WEBER Philip R.
Принадлежит:

Embodiments for crankshaft tooth sensing are provided. A method may include identifying a first tooth characteristic of a tooth of a plurality of teeth on the crank pulse wheel. The first tooth characteristic is identified by a first sensor element sensing along a first axis of a magnetic field and identifying a second tooth characteristic of the tooth with a second sensor element sensing along a second axis of the magnetic field. The method also includes identifying a tooth type for the tooth based on the first tooth characteristic and the second tooth characteristic. The method further includes identifying a sliding buffer for a set of N teeth of the plurality of teeth on the crank pulse wheel. A buffer value is calculated for the sliding buffer corresponding to the N set of teeth. The angular position of the crank pulse wheel is determined based on the buffer value. 1. A method for crankshaft tooth sensing for a crank pulse wheel of a vehicle , the method comprising:identifying a first tooth characteristic of a tooth of a plurality of teeth on the crank pulse wheel with a crankshaft sensor having a magnetic element, a first sensor element, and a second sensor element, wherein the plurality of teeth are arranged in a single track on the crank pulse wheel, and wherein the first tooth characteristic identified by the first sensor element sensing along a first axis of a magnetic field generated by the magnetic element;identifying a second tooth characteristic of the tooth with the second sensor element sensing along a second axis of the magnetic field generated by the magnetic element;identifying a tooth type for the tooth based on the first tooth characteristic and the second tooth characteristicidentifying a sliding buffer for a set of N teeth of the plurality of teeth on the crank pulse wheel, wherein N is a positive integer less than a total number of teeth of the crank pulse wheel;calculating a buffer value for the sliding buffer corresponding to the N set of ...

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Номер записи: 22
16-01-2020 дата публикации

CYLINDER RECHARGING STRATEGIES FOR CYLINDER DEACTIVATION

Номер: US20200018197A1
Автор: Jr. James E, McCarthy, Nielsen Douglas J
Принадлежит: Eaton Intelligent Power Limited

A multiple-cylinder diesel engine system comprises an intake valve and an exhaust valve for each of the multiple cylinders. A valve control system is connected to selectively deactivate an intake valve and an exhaust valve for a selected cylinder. A fuel injection control system is connected to selectively deactivate fuel injection to the selected cylinder while increasing fuel to firing cylinders. The multiple cylinder diesel engine enters a cylinder deactivation mode whereby the valve control system deactivates the intake valve and the exhaust valve and the fuel injection control system deactivates the fuel injection to the cylinder while continuing to fire other cylinders of the multiple cylinder diesel engine. The valve control system selectively opens the deactivated intake valve to relieve a negative pressure condition in the deactivated cylinder. Alternatively, the valve control system opens the deactivated exhaust valve to relieve a negative pressure condition in the deactivated cylinder. 1. A method for cylinder deactivation in a multiple-cylinder diesel engine , comprising:selectively deactivating fuel injection to a selected cylinder of the diesel engine;selectively deactivating an intake valve and an exhaust valve for the selected cylinder in the diesel engine;firing at least one of the remaining cylinders of the diesel engine while the selected cylinder is deactivated;cycling a set of reciprocating pistons in both the selected cylinder and the firing cylinders; andintermittently selectively opening one or both of the intake valve and the exhaust valve for the selected cylinder to relieve a negative pressure condition in the selected cylinder.2. The method of claim 1 , wherein the selective opening is a low-lift claim 1 , late intake valve opening event (LIVO).3. The method of claim 1 , further comprising switching between a 4-stroke mode and an 8-stroke mode to relieve the negative pressure condition.4. The method of claim 1 , further comprising ...

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Номер записи: 23
16-01-2020 дата публикации

DECELERATION CYLINDER CUTOFF SYSTEM INCLUDING SMART PHASER

Номер: US20200018251A1
Автор: Kromrey Chad D., Picot Nathan M.
Принадлежит:

An internal combustion engine includes a cylinder and a valve assembly configured to activate and deactivate the at least one cylinder. The valve assembly includes an intake valve configured to control air flow into the at least one cylinder. A controller outputs a first control signal to the valve assembly to deactivate the at least one cylinder in response to detecting a deceleration event. The controller also outputs a second control signal to command the valve assembly to delay opening the intake valve from a closed position after re-activating the cylinder so that the torque output produced in response to re-activating the cylinder is reduced. 1. A vehicle comprising:an internal combustion engine including at least one cylinder;a valve assembly configured to activate and deactivate the at least one cylinder, the valve assembly including an intake valve configured to control air flow into the at least one cylinder; andan electronic controller configured to output a first control signal to the valve assembly to deactivate the at least one cylinder in response to detecting a deceleration event and to output a second control signal to command the valve assembly to delay opening the intake valve from a closed position after re-activating the at least one cylinder.2. The vehicle of claim 1 , wherein the internal combustion engine further comprises a piston reciprocably disposed in the at least one cylinder claim 1 , and wherein the electronic controller outputs the second control signal based on a position of the piston after re-activating the at least one cylinder.3. The vehicle of claim 2 , wherein the electronic controller outputs the second control signal in response to the position of the piston reaching a position threshold.4. The vehicle of claim 3 , wherein an amount of air drawn into the at least one cylinder meets an air target value in response to opening the intake valve.5. The vehicle of claim 4 , wherein the air target value changes based on at least ...

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Номер записи: 24
21-01-2021 дата публикации

Cam for a Camshaft

Номер: US20210018082A1
Автор: Daniel Schoener
Принадлежит: Neumayer Tekfor Engineering Gmbh

A cam having at least two part cams are arranged axially behind one another along a longitudinal axis includes an undercut between the cam parts. The part cams have running faces which lie radially on the outside of the part cams and have different variable running face contours. The undercut has a profile with a variable contour which is dependent in each case on that adjacent running face contour which is at a smaller radial spacing from the longitudinal axis than the other running face contour.

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Номер записи: 25
28-01-2016 дата публикации

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

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

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

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Номер записи: 26
28-01-2021 дата публикации

Pre-lubrication and skip fire operations during engine cranking

Номер: US20210025298A1
Автор: J. Steven Kolhouse, Lyle E. Kocher
Принадлежит: Cummins Inc

A system includes a valve actuation system, a pre-lubrication pump coupled to a lubrication circuit and configured to provide oil to the valve actuation system, a catalyst for receiving and treating exhaust gasses, and a controller. The controller is configured to identify an engine start request and determine whether the catalyst temperature is below a first threshold value. In response to determining that the catalyst temperature is below the first threshold value, the controller actuates the pre-lubrication pump to direct lubricant to the valve actuation system, controls the valve actuation system to deactivate at least one cylinder of an engine, and, subsequent to deactivating the at least one cylinder of the engine, cranks the engine.

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Номер записи: 27
01-02-2018 дата публикации

LATCH INTERFACE FOR A VALVE ACTUATING DEVICE

Номер: US20180030861A1
Автор: Sheren James R., Spoor Anthony L.
Принадлежит:

An apparatus includes a ball plunger post and a valve stem post extending upward from a base, the ball plunger post having a size and a shape of a hydraulic lift adjuster (HLA) of a predefined engine, and the valve stem post having a size and a shape of a valve stem of the predefined engine. The apparatus includes a fixture sized and shaped to receive a switching rocker arm assembly, the switching rocker arm assembly having a first end for pivoting and a second end for latching, and a latch with a latch pin fitting into a latch bore and a latch seat. The apparatus includes a latch rod for positioning within the latch bore to rest upon the latch seat, the latch rod having a hardness higher than that of the latch seat and a same diameter as the latch pin, and adapted for coining the latch seat. 1. A method for manufacturing a switching rocker arm assembly for an internal combustion engine , the method comprising:assembling a switching rocker arm assembly including an outer arm having a first flat surface assembled to an inner arm having a latch bore onto a manufacturing fixture, the manufacturing fixture comprising: a base, a ball plunger post extending upward from the base, the ball plunger having a size and a shape of a hydraulic lift adjuster (HLA) of an internal combustion engine, and a valve stem post extending upward away from the base, the valve stem post having a size and a shape of a valve stem of the internal combustion engine, the valve stem having a position, a height, and an orientation relative to the ball plunger post with relation to the HLA of the internal combustion engine, and a support shelf;placing a latch rod into the latch bore;placing the manufacturing fixture into a press;applying a deforming load onto a surface opposite the first flat surface of the outer arm; andmeasuring a latch lash of the switching rocker arm assembly.2. The method of claim 1 , further comprising increasing the deforming load and repeating the steps of applying and ...

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Номер записи: 28
01-02-2018 дата публикации

METHOD FOR ASSEMBLING A CAMSHAFT IN A MODULE BODY

Номер: US20180030863A1
Автор: CURLIC Marko, DEPTA Merlin, FRICKE Michael, HEITLING Falk, JUNGE Volker, ROGATSCH Thomas, WÖHLER Kevin
Принадлежит:

A camshaft may comprise a main shaft, on which at least two sliding cam pieces are accommodated in a rotationally fixed and axially displaceable manner, wherein the sliding cam pieces each comprise a carrier tube, on which are seated cam groups each comprising at least two cam tracks for valve-control purposes, as well as an adjustment element that can be brought into operative connection with an actuator for axial displacement of the two sliding cam pieces. A method for assembling such a camshaft may involve providing a module body with bearing bridges that receive the camshaft in a rotatable manner, inserting a first sliding cam piece into a first bearing bridge, connecting the first sliding cam piece to the adjustment element, inserting a second sliding cam piece into a second bearing bridge, and connecting the second sliding cam piece to the adjustment element with the aid of an axial adjustment distance of at least one of the sliding cam pieces in the bearing bridges. 110.-. (canceled)11. A method for assembling a camshaft that comprises a main shaft on which at least two sliding cam pieces are disposed in a rotationally-fixed and axially-displaceable manner , wherein each of the at least two sliding cam pieces comprises cam groups seated on a carrier tube , wherein each cam group comprises at least two cam tracks for valve-control purposes , the camshaft further comprising an adjustment element that can be brought into operative connection with an actuator for axially displacing the at least two sliding cam pieces , the method comprising:providing a module body that has bearing bridges for receiving the camshaft in a rotatable manner;inserting a first sliding cam piece of the at least two sliding cam pieces into a first bearing bridge of the bearing bridges;connecting the first sliding cam piece to the adjustment element;inserting a second sliding cam piece of the at least two sliding cam pieces into a second bearing bridge of the bearing bridges; ...

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Номер записи: 29
31-01-2019 дата публикации

Sliding cam system

Номер: US20190032521A1
Автор: Jens Dietrich, Steffen Hirschmann
Принадлежит: MAN Truck and Bus SE

A sliding cam system for an internal combustion engine. The sliding cam system includes a cam shaft and a cam carrier, arranged rotationally fixedly and axially movably on the cam shaft. The cam carrier including a first shifting gate and a second shifting gate. The sliding cam system includes a first actuator with an element able to move along a longitudinal axis of the cam shaft, especially a pin, which can be brought into contact with the first shifting gate for the axial movement of the cam carrier in a first direction. The sliding cam system includes a second actuator with an element able to move along the longitudinal axis of the cam shaft, especially a pin, which can be brought into contact with the second shifting gate for the axial movement of the cam carrier in a second direction which is opposite to the first direction.

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Номер записи: 30
31-01-2019 дата публикации

Sliding cam system and method for operating an internal combustion engine

Номер: US20190032524A1
Автор: Fabian Zeil, Heiko Neukirchner, Sören Franke, Thilo Kowalschek
Принадлежит: MAN Truck and Bus SE

A sliding cam system for a variable valve train. The sliding cam system includes a camshaft, a cam carrier, a cam follower, and a first actuator. A first cam of the cam carrier and a second cam of the cam carrier are arranged offset with respect to one another along a longitudinal axis of the camshaft. The first cam comprises a base circle region and a valve lift region with a limiting section which adjoins the base circle region of the first cam. The second cam has a base circle region and a valve lift region with a limiting section which adjoins the base circle region of the second cam. The limiting section of the first cam and the limiting section of the second cam are of identical configuration and are arranged at an identical circumferential position about the longitudinal axis of the camshaft.

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Номер записи: 31
19-02-2015 дата публикации

Internal Combustion Engine Valve Train Adjustment Device

Номер: US20150047588A1
Автор: Alexander Von Gaisberg-Helfenberg, Bernd Neubauer, Kai Lehmann, Marc MARONDE, Matthias EPPINGER, Thomas Stolk, Tilmann Roemheld
Принадлежит: DAIMLER AG

A device for adjusting a motor vehicle valve train includes at least one camshaft with at least four cam elements arranged in an axially displaceable manner. In each case two of the cam elements that are adjacently situated are formed as a cam element group to be switched together.

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Номер записи: 32
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: 33
14-02-2019 дата публикации

VARIABLE VALVE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES

Номер: US20190048760A1
Автор: HUBMANN Christian, Melde-Tuczai Helmut
Принадлежит: AVL List GmbH

The invention relates to a variable valve control device () for internal combustion engines of the reciprocating-piston design having at least one gas exchange valve, which can be actuated by a camshaft () by means of a cam device () that is connected to the camshaft () for conjoint rotation and that has at least two different cam tracks (), which camshaft is supported in such a way that the camshaft can be rotated about a camshaft axis (), wherein, selectively, one of the cam tracks () can be activated and at least one other cam track () can be deactivated by means of a control device (), and wherein the control device () has at least one control element (), which is guided axially, in particular within the camshaft, and by which at least one cam device () that is supported on the camshaft () for conjoint rotation but axially movably and that has at least two different cam tracks () can be adjusted by means of at least one driving piece (). In order to enable reliable and fail-safe variable valve actuation in the simplest possible manner, at least one blocking element () is provided for blocking and releasing the axial adjustment motion of the cam device (), wherein the blocking element () has a control stud () fixedly connected to the cam device () and a—preferably stationary—control disk () arranged coaxial to the camshaft (), wherein the control disk () has, in at least one angular region, at least one control opening () for receiving the control stud (). 11324378788710101112437820420214223222521. A variable valve control device () for internal combustion engines of the reciprocating piston design comprising at least one gas exchange valve , which is actuable by means of a camshaft () , which is mounted so it is rotatable about a camshaft axis () , via a cam device () , which is connected to the camshaft () in a rotationally-fixed manner and has at least two different cam tracks ( , ) , wherein alternately one of the cam tracks ( , ) is activatable and at least ...

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Номер записи: 34
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: 35
05-03-2015 дата публикации

DEVICE FOR A VALVE TRAIN FOR CHANGING THE LIFT OF GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE

Номер: US20150059677A1
Автор: Doller Steffen
Принадлежит: IAV GMBH INGENIEURGESELLSCHAFT AUTO UND VERKEHR

The invention relates to a device for a valve train for changing the lift of gas exchange valves of an internal combustion engine, having a camshaft rotatably mounted in a housing, which camshaft consists of an arrangement of, in succession coaxially from the inside to the outside, at least one push rod, at least one carrier shaft and at least one cam unit provided with at least two different cams and at least one thrust pin, and the cam shaft is surrounded at least partially by at least one shift gate mounted non-rotatably and axially movably in the housing. At least one change-over pin and at least one support pin are immovably connected to the push rod, wherein the change-over pin and the support pin extend in openings at least right through the carrier shaft and the change-over pin can be brought into operative contact with at least one switching contour on the shift gate and the support pin can be brought into operative contact with at least one support contour on the shift gate 1. A device for a valve train for changing the lift of gas exchange valves of an internal combustion engine , the device comprisinga camshaft rotatably mounted in a housing, wherein the camshaft comprises an arrangement of, disposed in order coaxially from the inside to the outside:at least one push rod;at least one carrier shaft; andat least one cam unit having at least two different cams and at least one thrust pin,wherein the push rod, carrier shaft and cam unit are mounted axially movably and non-rotatably in relation to one another, and the camshaft is surrounded at least partially by at least one shift gate mounted non-rotatably and axially movably,wherein at least one changeover pin and at least one support pin are immovably connected to the push rod, andwherein the changeover pin and the support pin extend in openings that extend through the carrier shaft and the changeover pin can be brought into operative contact with at least one switching contour on the shift gate and the ...

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Номер записи: 36
03-03-2016 дата публикации

VALVE LIFT CONTROL DEVICE WITH CYLINDER DEACTIVATION

Номер: US20160061069A1
Автор: Bonse Joerg, Grosch Guenter Hans, Lach Rainer
Принадлежит:

Methods and systems are provided for a valve lift control device. In one example, a method may include rotating an adjusting camshaft of the valve lift control device in order to adjust a valve lift of one or more cylinders. 1. A method , comprising:adjusting a valve lift of a cylinder via an adjusting camshaft on a first side of an activation lever and a camshaft on a second side of the activation lever, the adjusting camshaft comprising radially offset cams such that each valve of a cylinder is individually adjusted based on an engine load.2. The method of claim 1 , wherein rotating the adjusting camshaft in a first direction increases an angular position of the activation lever.3. The method of claim 2 , wherein rotating the adjusting camshaft in a second direction decreases the angular position of the activation lever claim 2 , where the second direction is opposite the first direction.4. The method of claim 3 , further comprising increasing the valve lift in response to increasing the angular position of the activation lever and decreasing the valve lift in response to decreasing the angular position.5. The method of claim 1 , wherein the adjusting camshaft comprises a maximum radial effect and a minimum radial effect.6. The method of claim 5 , wherein the maximum radial effect corresponds with a maximum angular position of the activation lever and fully rotating the adjusting camshaft in a first direction.7. The method of claim 6 , wherein the minimum radial effect corresponds with a minimum angular position of the activation lever and fully rotating the adjusting camshaft in a second direction.8. The method of claim 7 , wherein the first direction is clockwise and the second direction is counterclockwise.9. The method of claim 7 , wherein the first direction is counterclockwise and the second direction is clockwise.10. A system claim 7 , comprising:a first camshaft and second camshaft on opposite sides of an activation lever;the first camshaft comprising a ...

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Номер записи: 37
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: 38
01-03-2018 дата публикации

VARIABLE DISPLACEMENT ENGINE CONTROL

Номер: US20180058346A1
Автор: Gerow Matthew, Grant Robert Michael, LIN Steven, Richards Adam J., Rollinger John Eric
Принадлежит:

Systems and methods for operating an engine in a variety of different cylinder operating modes are presented. In one example, an actual total number of available cylinder modes is increased in response to a vehicle's suspension setting and road roughness. By increasing the available cylinder modes, the engine may be operated in a higher number of modes where one or more engine cylinders may be deactivated to conserve fuel. The number of cylinder modes is increased during conditions where vehicle occupants may be less likely to object to operating the engine with fewer active cylinders. 1. An engine control method , comprising:increasing an actual total number of available cylinder modes from a first actual total number of available cylinder modes to a second actual total number of available cylinder modes via a controller in response to an estimate of roughness of a road exceeding a threshold; andoperating an engine via the controller in a cylinder deactivation mode after increasing the actual total number of available cylinder modes.2. The method of claim 1 , where the available cylinder modes include cylinder modes where one or more cylinders are deactivated via ceasing to supply fuel to engine cylinders.3. The method of claim 1 , further comprising entering the cylinder deactivation mode after counting an actual total number of engine events since a first estimate of roughness of the road exceeded the threshold claim 1 , the first estimate occurring after a last estimate of roughness of the road that did not exceed the threshold.4. The method of claim 3 , where the actual total number of engine events is an actual total count of ignitions of air-fuel mixtures in engine cylinders.5. The method of claim 3 , where the actual total number of engine events is an actual total count of exhaust valve opening events.6. The method of claim 1 , where increasing an actual total number of available cylinder modes includes increasing an actual total number of cylinder modes ...

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Номер записи: 39
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: 40
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: 41
17-03-2022 дата публикации

ELECTROMAGNETIC ACTUATOR

Номер: US20220082036A1
Автор: LAMPL Ewald, SCHÖNER Gerhard, THEUSSL Daniel
Принадлежит: MSG Mechatronic Systems GmbH

An electromagnetic actuator having at least one electromagnetic actuator unit, the actuator unit comprising a coil and a plunger, which plunger is axially movable relative to the coil via energization of the coil, and the actuator unit being arranged in a housing. In order to achieve a particularly simple design, the plunger is arranged approximately coaxially with the coil according to the invention. 1. An electromagnetic actuator with at least one electromagnetic actuator unit , the actuator unit having a coil and a plunger , which plunger can be moved axially relative to the coil by energizing the coil , wherein the actuator unit is arranged in a housing , wherein plunger is arranged approximately coaxially with coil.2. The electromagnetic actuator according to claim 1 , wherein at least two actuator units are provided claim 1 , plungers are arranged approximately coaxially with coils in all actuator units claim 1 , with all actuator units preferably arranged in a common housing.3. The electromagnetic actuator according to claim 1 , wherein plunger can move from an end position close to the core to an end position away from the core claim 1 , and plunger in end positions rests against stops.4. The electromagnetic actuator according to claim 1 , wherein a permanent magnet is arranged on the plunger.5. The electromagnetic actuator according to claim 4 , wherein coil is arranged around a core claim 4 , a permanent magnet being magnetically separated from the core in the axial direction only through an air gap.6. The electromagnetic actuator according to claim 1 , wherein an anchor element claim 1 , in particular an anchor plate claim 1 , is arranged on the plunger.7. The electromagnetic actuator according to claim 1 , wherein a permanent magnet and an armature element are arranged claim 1 , whereas the armature element protruding beyond permanent magnet in a plane perpendicular to a longitudinal axis of the actuator.8. The electromagnetic actuator according to claim ...

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Номер записи: 42
28-02-2019 дата публикации

ACTUATION APPARATUS

Номер: US20190063268A1
Автор: BUONOCORE Gennaro, CECCHI Michele Angelo
Принадлежит:

An actuation apparatus for actuating a switchable valve train component of an internal combustion engine includes: a lever for contacting an actuation source and contacting the switchable valve train component; and a biasing unit. The biasing unit contacts the lever. In use, the biasing unit becomes biased by the lever when the actuation source moves the lever when the actuation source attempts to actuate the switchable valve train component, via the lever, when the switchable valve train component is in an un-activatable state. The biasing unit causes the lever to activate the switchable valve train component when the switchable valve train component is in an activatable state again. 1. An actuation apparatus for actuating a switchable valve train component of an internal combustion engine , the apparatus comprising:a lever configured to contact an actuation source and to contact the switchable valve train component; anda biasing unit;wherein the biasing unit contacts the lever,wherein, in use, the biasing unit is configured to become biased by the lever when the actuation source moves the lever when the actuation source attempts to actuate the switchable valve train component, via the lever, when the switchable valve train component is in an un-activatable state, whereby the biasing unit causes the lever to activate the switchable valve train component when the switchable valve train component is in an activatable state again.2. The actuation apparatus according to claim 1 , wherein the actuation source is configured to move a fulcrum point of the lever when the actuation source moves the lever when the switchable valve train component is in an un-activatable state.3. The actuation apparatus according to claim 2 , wherein the actuation apparatus comprises a sliding element along which the lever is arranged to slide claim 2 , andwherein the actuation source is configured to move the lever along the sliding element when the actuation source moves the lever when the ...

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Номер записи: 43
28-02-2019 дата публикации

VALVETRAIN WITH VARIABLE VALVE ACTUATION

Номер: US20190063273A1
Автор: JR. James E., McCarthy, Yankovic Eric
Принадлежит: EATON CORPORATION

A method of providing a rocker arm set for a valvetrain includes providing a first intake rocker arm, a second intake rocker arm and a first exhaust rocker arm. The first intake rocker arm is configured as a switching rocker arm for a first intake valve on a first cylinder. The second intake rocker arm is for a second intake valve on a second cylinder. The second rocker arm is configured to operate in a normal Otto cycle mode. The first exhaust rocker arm is provided for a first exhaust valve on the second cylinder. The first intake rocker arm operates in one of an LIVC or EIVC mode where the first intake rocker arm is configured to open or close at a different time compared to the second intake valve. The first exhaust rocker arm operates in a cylinder deactivation mode. 1. A method of providing a rocker arm set for a valvetrain , the method comprising:providing a first intake rocker arm configured as a switching rocker arm for a first intake valve on a first cylinder;providing a second intake rocker arm for a second intake valve on a second cylinder, the second rocker arm configured to operate in a normal Otto cycle mode;providing a first exhaust rocker arm for a first exhaust valve on the second cylinder; andwherein (i) the first intake rocker arm operates in one of a late intake valve closing mode (LIVC) and an early intake valve closing mode (EIVC), where the first intake rocker arm is configured to one of open and close at a different time compared to the second intake valve, and (ii) the first exhaust rocker arm operates in a cylinder deactivation mode.2. The method of wherein the first intake rocker arm operates in added motion and wherein the first intake rocker arm operates in LIVC wherein the first intake rocker arm closes the first intake valve later than the second intake valve.3. The method of where the first intake rocker arm operates in EIVC wherein the first intake rocker arm opens the first intake valve earlier than the second intake valve.4. The ...

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Номер записи: 44
11-03-2021 дата публикации

Sensor assembly for a sliding camshaft of a motor vehicle

Номер: US20210071549A1
Автор: Daniele Ciola, Davide DI NUNNO
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A sensor assembly for a sliding camshaft of a motor vehicle is provided. The sliding camshaft includes a base shaft that extends along a longitudinal axis and rotates about the longitudinal axis. The sliding camshaft further includes lobe banks rotationally fixed to the base shaft. Each lobe bank is axially movable between first and second positions relative to the base shaft. The sensor assembly includes a detection element rotationally fixed relative to the base shaft and axially movable between first and second positions relative to the base shaft. The sensor assembly further includes a sensor operably coupled to the detection element and configured to generate a signal indicative of an axial position of the detection element relative to the base shaft and at least one of an angular speed of the base shaft and an angular position of the base shaft about the longitudinal axis.

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Номер записи: 45
07-03-2019 дата публикации

CONTROL METHOD OF INTERNAL COMBUSTION ENGINE

Номер: US20190072046A1
Автор: HAYASHI Hideyuki, Katori Yuto, Masukake Yuichi, Shiomi Daisuke, Yokote Ryuji
Принадлежит: HONDA MOTOR CO., LTD.

A preparation control for suppressing fluctuation of an output torque of the engine at the time of executing switching operation from the whole cylinder operation to the partial cylinder operation is executed when having made a switching request from the whole cylinder operation to the partial cylinder operation. The target switching time executing the switching operation is calculated in accordance with the valve operation phase after the preparation time is completed. The cylinder deactivation mechanism is controlled such that the switching operation is executed at the target switching time. The target switching time is set in accordance with the valve operation phase at the timing in which the abnormal noises are not generated. 1. A control method of an internal combustion engine which comprises a plurality of cylinders , a valve operation phase variable mechanism configured to change a valve operation phase of at least one of an intake valve and an exhaust valve provided in each of the plurality of cylinders , and a cylinder deactivation mechanism configured to perform switching between partial cylinder operation in which apart of the plural cylinders is operated and whole cylinder operation in which all of the cylinders are operated , comprising steps of:(a) executing, by a computer, a preparation control for suppressing fluctuation of an output torque of the engine at the time of executing switching operation from the whole cylinder operation to the partial cylinder operation when a switching request from the whole cylinder operation to the partial cylinder operation is made;(b) calculating, by a computer, target switching time executing the switching operation after the preparation control is completed in accordance with the valve operation phase; and(c) outputting, by a computer, switching command signal to the cylinder deactivation mechanism based on the target switching time to execute the switching operation.2. The control method of the internal ...

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Номер записи: 46
24-03-2022 дата публикации

Variable-Lift Valve Train Having at Least Two Working Positions

Номер: US20220090523A1
Автор: Din Wabbals, Giovanni Mincione, Jan Clauberg, Sebastian SPERRHACKE, Steffen Lohde
Принадлежит: Individual

A variable-lift valve train for a gas exchange valve of an internal combustion engine includes a lift adjuster, a lift actuator, and a lift lever. The lift adjuster has a working curve that is arrangeable at least in a first working position for setting a partial lift and in a second working position for setting a maximum lift. The working curve has a lift region and a base circle region. The lift actuator, which has an actuating contour configured to deflect the lift adjuster. The lift lever, which is deflectable via the working curve and thereby actuates a lift of the gas exchange valve. The valve train is configured to, in the first working position and in the second working position, actuate the gas exchange valve with an at least substantially equal maximum valve acceleration.

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Номер записи: 47
16-03-2017 дата публикации

CYLINDER DEACTIVATION DEACTIVATING ROLLER FINGER FOLLOWER HAVING IMPROVED PACKAGING

Номер: US20170074128A1
Автор: JR. James Edward, McCarthy, Zurface Austin
Принадлежит: EATON CORPORATION

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 of claim 1 , further comprising a roller follower mounted between the first inner side arm and the second inner side arm on the bearing axle.3. ...

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Номер записи: 48
16-03-2017 дата публикации

CONTINUOUS VARIABLE VALVE LIFT APPARATUS AND ENGINE PROVIDED WITH THE SAME

Номер: US20170074129A1
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 of which a cam is formed thereto and the camshaft is inserted into therein, a slider housing of which the cam portion is rotatably inserted therein, of which a position with respect to the camshaft is movable and of which a guide slot is formed thereto, a control portion selectively changing the position of the slider housing, a guide shaft disposed parallel to the camshaft and inserted into the guide slot for guiding movement of the slider housing, an output portion rotatable around a pivot shaft and of which a valve shoe is formed thereto and a valve unit driven by the valve shoe. 1. A continuously variable valve lift apparatus comprising:a camshaft;a cam portion of which a cam is formed thereto and the camshaft is inserted into therein;a slider housing of which the cam portion is rotatably inserted therein, of which a position with respect to the camshaft is movable and of which a guide slot is formed thereto;a control portion selectively changing the position of the slider housing;a guide shaft disposed parallel to the camshaft and inserted into the guide slot for guiding movement of the slider housing;an output portion rotatable around a pivot shaft and of which a valve shoe is formed thereto; anda valve unit driven by the valve shoe.2. The continuously variable valve lift apparatus of claim 1 , further comprising an inner bracket rotatably disposed within the slider housing claim 1 , wherein the inner bracket transmits rotation of the camshaft to the cam portion.3. The continuously variable valve lift apparatus of claim 2 ,wherein a camshaft hole is formed to the camshaft;wherein a cam portion hole is formed to the cam portion; andwherein a pin hole is formed to the inner bracket, and a pin slider rotatably disposed within the pin hole and of which a slider hole is formed thereto; and', 'a connecting pin connected to the camshaft hole and slidably inserted into the cam portion ...

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Номер записи: 49
05-03-2020 дата публикации

SLIDING CAMSHAFT ASSEMBLY

Номер: US20200072098A1
Автор: Certo Domenic, KAAN Bradley R., Nguyen Hong Wai
Принадлежит:

A camshaft assembly includes a base shaft, an axially movable structure having a barrel cam and a plurality of lobe packs, and an actuator. The barrel cam defines a single control groove having an enlarged region and a converged region. The actuator includes an actuator body with first and second pins. Each of the first and second pins moves relative to the actuator body between a retracted position and an extended position. The axially movable structure may move from a first position to a second position when the second pin rides along at least a portion of a second side of the enlarged region and then enters the converged region. The axially movable structure may also move from a second position to a first position when the first pin rides along at least a portion of a first side of the enlarged region before entering the converged region. 1. A camshaft assembly comprising:a base shaft extending along a longitudinal axis, the base shaft being configured to rotate about the longitudinal axis;an axially movable structure mounted on the base shaft, the axially movable structure being axially movable relative to the base shaft, the axially movable structure being rotationally fixed to the base shaft, wherein the axially movable structure includes:a plurality of lobe packs, each of the lobe packs including a plurality of cam lobes, wherein the axially movable structure includes a barrel cam, the barrel cam defines a control groove, and the control groove defines a single path around a circumference of the barrel cam wherein the single path is defined by an enlarged region and a converged region;an actuator including an actuator body and first and second pins each movably coupled to the actuator body such that each of the first and second pins is movable relative to the actuator body between a retracted position and an extended position, wherein the first and second pins are configured to ride along the single path defined by the control groove;wherein the axially ...

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Номер записи: 50
23-03-2017 дата публикации

CAMSHAFT

Номер: US20170081984A1
Автор: Kunz Michael, LEHMANN Martin
Принадлежит: THYSSENKRUPP PRESTA TECCENTER AG

A camshaft may have a bearing shaft configured as a hollow shaft in which an inner shaft is disposed concentrically relative to the bearing shaft. The inner shaft may be twistable relative to the bearing shaft. A first cam segment having a first recess for receiving the bearing shaft may be disposed on the bearing shaft, may be rotatable relative to the bearing shaft, and may be connected in a rotationally fixed and axially fixed manner to the inner shaft. A second cam segment having a second recess for receiving the bearing shaft may be disposed on the bearing shaft. The second cam segment may have at least two cam contours and may be fastened on the bearing shaft so that the second cam segment is rotationally fixed to the bearing shaft and arranged in an axially displaceable manner on the bearing shaft.” 117-. (canceled)18. A camshaft comprising:a bearing shaft configured as a hollow shaft;an inner shaft disposed concentrically within an interior of the bearing shaft, wherein the inner shaft is twistable relative to the bearing shaft;a first cam segment with a first recess that receives the bearing shaft, wherein the first cam segment is disposed rotatably on the bearing shaft, wherein the first cam segment is axially connected to the inner shaft in a rotationally fixed manner; anda second cam segment with a second recess that receives the bearing shaft and with at least two cam contours, wherein the second cam segment is fastened on the bearing shaft so that the second cam segment is connected to the bearing shaft in a rotationally fixed manner, wherein the second cam segment is axially displaceable along the bearing shaft.19. The camshaft of wherein the first cam segment is axially connected to the inner shaft in a rotationally fixed manner by a connection means.20. The camshaft of further comprising a latching means for latching the second cam segment at a plurality of axial positions.21. The camshaft of wherein the latching means is disposed at least in part ...

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Номер записи: 51
23-03-2017 дата публикации

CONTINUOUS VARIABLE VALVE LIFT APPARATUS AND ENGINE PROVIDED WITH THE SAME

Номер: US20170081994A1
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 two rotation portions are formed, on which a cam is formed between the two rotation portions and into which the camshaft is inserted, two slider housings into which each rotation portion is rotatably inserted therein, of which a position is moved for changing a relative position of the cam portion with respect to the camshaft and onto which a guide slot is formed, a control portion configured to selectively move the position of each of the two slider housings, a guide shaft parallel to the camshaft and inserted into the guide slot for guiding movement of the slider housing, an output portion rotatable around a pivot shaft and onto 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 two rotation portions are formed, on which a cam is formed between the two rotation portions and into which the camshaft is inserted;two slider housings into which each rotation portion is rotatably inserted therein, of which a position is moved for changing a relative position of the cam portion with respect to the camshaft and onto which a guide slot is formed;a control portion configured to selectively move the position of each of the two slider housings;a guide shaft parallel to the camshaft and inserted into the guide slot for guiding movement of the slider housing;an output portion rotatable around a pivot shaft and onto 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 portions and the cam of the cam portion are integrally formed.3. The continuously variable valve lift apparatus of claim 1 , wherein:two camshaft holes are formed on the camshaft; anda pin hole is formed on each rotation portion, a pin slider rotatably disposed to each pin ...

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Номер записи: 52
23-03-2017 дата публикации

CONTINUOUS VARIABLE VALVE LIFT APPARATUS AND ENGINE PROVIDED WITH THE SAME

Номер: US20170081995A1
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 of which a position is rotatable around a pivot shaft, a control portion engaged with the slider housing and configured to selectively rotate the slider housing around the pivot shaft, an output portion rotatable around the pivot shaft, contacting the cam and onto which a valve shoe is formed, and a valve device contacting the valve shoe and driven by rotation of the cam. 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 of which a position is rotatable around a pivot shaft;a control portion engaged with the slider housing and configured to selectively rotate the slider housing around the pivot shaft;an output portion rotatable around the pivot shaft, contacting the cam and onto which a valve shoe is formed; anda valve device contacting the valve shoe and driven by rotation of the cam.2. The continuously variable valve lift apparatus of claim 1 , wherein a slider gear is formed to the slider housing claim 1 , andwherein the control portion comprises a gear lifter onto which a control gear engaged with the slider gear is formed.3. The continuously variable valve lift apparatus of claim 2 , wherein a center of tooth of the slider gear is the pivot shaft.4. The continuously variable valve lift apparatus of claim 1 , further comprising:a connecting pin connected to the camshaft; anda spiral bearing mounted to the cam portion and into which the connecting pin is inserted.5. The continuously variable valve lift apparatus of claim 4 , wherein the spiral bearing comprises:an outer wheel connected to a driving hole formed to the cam portion; andan inner wheel rotatably connected to the outer ...

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Номер записи: 53
23-03-2017 дата публикации

VALVE TRAIN ASSEMBLY

Номер: US20170081996A1
Автор: Novotny Jiri
Принадлежит:

A valve train assembly has at least a camshaft with at least a first cam body and a second cam body, each axially movable over the camshaft between a first axial position and a second axial position and each earn body being provided with a first cam for controlling a valve in the first axial position and a second cam for controlling the valve in the second axial position; and one or more couplers for coupling the movement of the cam bodies. A first groove extends along a part of the circumference of the first cam body. A second groove extends along a part of the circumference of the second cam body, An engager for engaging alternately the first. and second groove is included, such that either the first cam body is moved to the first axial position or the second cam body is moved to the second axial position. 1: A valve train assembly comprising:a camshaft including a first cam body and a second cam body, each cam body being axially movable over the camshaft between a first axial position and a second axial position, and each cam body including a first cam configured to control a valve in the first axial position and a second cam configured to control the valve in the second axial position;a coupler configured to couple a movement of the first cam body and the second cam body;a first groove extending along a part of a circumference of the first cam body;a second groove extending along a part of a circumference of the second cam body; andan engager configured to alternately engage the first and second groove, such that either the first cam body is moved to the first axial position or the second cam body is moved to the second axial position.2: The assembly of claim 1 , wherein the engager includes a first movable pin configured to engage in the first groove and a second movable pin configured to engage in the second groove.3: The assembly of claim 2 , wherein the engager further includes a solenoid connected to each movable pin claim 2 ,wherein the solenoid is ...

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Номер записи: 54
23-03-2017 дата публикации

CONTROL METHOD USING CONTINUOUS VARIABLE VALVE DURATION APPARATUS

Номер: US20170082036A1
Автор: HA Kyoung Pyo, KIM Back Sik, Kwon Kiyoung, RYU In Sang, Suh Ingee
Принадлежит:

A control method using a continuous variable valve duration apparatus implements a a continuous variable valve duration apparatus which includes a wheel mounted on a camshaft and having a wheel key so as to control duration of an intake valve of an engine, a cam unit having a cam and a cam key, adapted such that the camshaft is inserted thereinto, and being disposed so as to vary relative phase of the cam with respect to the camshaft, an inner bracket connected with the wheel key and the cam key, a slider housing being adapted such that the inner bracket is rotatably inserted thereinto and disposed so as to move vertically with respect to the engine, a controller varying a position of the slider housing so as to adjust rotation center of the inner bracket, and a guide unit guiding motion of the sliding housing. The control method includes calculating a required air amount for maintaining idle rotation speed of the engine by the controller when the engine is an idle state; mapping a supplied air amount in accordance with duration of the intake valve or the exhaust valve by the controller; setting a target valve duration for supplying the required air amount of the engine by the controller; and controlling duration of the intake valve or exhaust valve according to the set target valve duration by the controller. 1. A control method using a continuous variable valve duration apparatus which comprises a wheel mounted on a camshaft and having a wheel key so as to control duration of an intake valve or an exhaust valve of an engine , a cam unit having a cam and a cam key , being adapted such that the camshaft is inserted thereinto , and being disposed so as to be able to vary a relative phase of the cam with respect to the camshaft , an inner bracket being connected with the wheel key and the cam key , a slider housing being adapted such that the inner bracket is rotatably inserted thereinto and being disposed so as to move vertically with respect to the engine , a ...

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Номер записи: 55
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: 56
29-03-2018 дата публикации

CAMSHAFT PHASER/COMPRESSION BRAKE RELEASE INTEGRATION WITH CONCENTRIC CAMSHAFT

Номер: US20180087410A1
Автор: Cecil Adam C.
Принадлежит:

Valve trains employing a splined interface between phaser(s) and a concentric camshaft, actuator at rear of camshaft actuated by an actuation rod, adding a clearance hole to the lobe pin for clearance to the actuation rod, supplying oil to camshaft bearings via the concentric camshaft inner tube, and bolt on front camshaft bearing. The valve trains may further employ a third rocker lever that is usable for a selectable valve event (e.g. compression release brake) while also implementing variable valve timing and a concentric camshaft. 1. A valve train , comprising: an outer tube; and', 'an inner shaft extending within the outer tube;, 'a concentric camshaft including an intake camshaft phaser vane cavity;', 'an intake camshaft phaser vane plate independently rotatable within the intake camshaft phaser vane cavity;', 'an exhaust camshaft phase vane cavity; and', 'an exhaust camshaft phaser vane plate independently rotatable within the exhaust camshaft phaser vane cavity;, 'a phaser includingwherein the intake camshaft phaser vane plate includes splines engaging the outer tube of the concentric camshaft; andwherein the exhaust camshaft phaser vane plate includes splines engaging the inner shaft of the concentric camshaft.2. The valve train of claim 1 ,wherein the exhaust camshaft phaser vane plate includes at least one oil hole; andwherein the concentric camshaft further includes a camshaft bearing structured to provide a path for pressurized lube oil to enter the at least one oil hole.3. The valve train of claim 1 ,wherein the intake camshaft phaser vane plate includes a phaser anti-thrust bore pin;wherein the inner tube of the shaft includes an anti-thrust hole;wherein the phaser anti-thrust bore pin is structured to engage the anti-thrust hole.4. The valve train of claim 1 ,wherein the intake camshaft phaser vane plate includes a discontinuity in the intake splines; andwherein the exhaust camshaft phaser vane plate includes a discontinuity in the exhaust splines.5. ...

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Номер записи: 57
29-03-2018 дата публикации

Electromagnetic actuator

Номер: US20180087887A1
Автор: Akihiro Daikoku, Hideaki Arita, Masafumi Sugawara, Satoshi Tesen, Toru Ogawa
Принадлежит: Mitsubishi Electric Corp

The magnetic resistance of a magnetic path that passes through a coil ( 6 ) is increased by magnetically dividing a stator core into a plurality of divided cores ( 4, 5 ) in such a manner that the magnetic flux of a permanent magnet ( 7 ) flows through the magnetic path when a projection ( 82 ) of a plunger ( 8 ) magnetically connects the divided cores ( 4, 5 ), hence the magnetic resistance of the magnetic path that passes through the coil ( 6 ) rapidly changes due to a positional relationship between a gap between the divided cores ( 4, 5 ) and the plunger ( 8 ), and the magnetic flux that flows through the magnetic path rapidly changes, and moreover a large back electromotive force is produced.

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Номер записи: 58
21-03-2019 дата публикации

VARIABLE VALVE TRAIN

Номер: US20190085737A1
Автор: Kataoka Dai, TAKADA Yoshihiro
Принадлежит: HONDA MOTOR CO., LTD.

A variable valve train of an internal combustion engine has cylindrical cam carriers axially slidably and co-rotatably fitted on camshafts, respectively. The cam carriers have, respectively, first cam lobes and second cam lobes different in cam profile and axially adjacent to each other. Cam changeover mechanisms operate to axially shift the cam carriers to change over the first cam lobes and the second cam lobes to operate engine valves. An axial recess is formed in an axial end surface of an enlarged-diameter portion of the camshaft for axial insertion of an end of the cam carrier. The engine can thus be reduced in axial size, and a required axial shifting space for the cam carrier is secured. 16-. (canceled)7. A variable valve train of an internal combustion engine , comprising:a camshaft rotatably supported in a cylinder head of the internal combustion engine;a cylindrical cam carrier fitted on and around the camshaft in a manner axially slidable relative to the camshaft but prevented from rotation relative to the camshaft, the cam carrier being formed therearound with a plurality of cam lobes different in cam profile and axially adjacent to each other; anda cam changeover mechanism for axially shifting the cam carrier to change over the cam lobes for operating an engine valve,wherein the camshaft has, on an axial end thereof, an enlarged-diameter portion with an axial end surface with which one end of the cam carrier around the camshaft is adapted to abut axially,;wherein said cam carrier has therearound a lead groove cylindrical portion having therearound a lead groove, which changeover pins are engaged with or disengaged from to axially shift the cam carrier,wherein said lead groove cylindrical portion has an outer diameter smaller than an outer diameter of a base circle of the cam lobes, andwherein the axial end surface of the enlarged-diameter portion composes an axial recess for axially receiving an end of said lead groove cylindrical portion of the cam ...

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Номер записи: 59
30-03-2017 дата публикации

CONTINUOUS VARIABLE VALVE DURATION APPARATUS AND ENGINE PROVIDED WITH THE SAME

Номер: US20170089230A1
Автор: HA Kyoung Pyo, KIM Back Sik, SON You Sang
Принадлежит: HYUNDAI MOTOR COMPANY

A continuous variable valve duration apparatus may include camshaft, first and second cam portions of cam is formed thereto respectively, of which the camshaft is inserted thereto and of which relative phase angles with respect to the camshaft are variable, first and second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively, first and second slider housings of which the first and second inner brackets are rotatably inserted thereto and of which relative position with respect to the camshaft are variable, cam cap rotatably supporting the first and second cam portions respectively and of which each slider housing is slidably mounted thereto, control shaft disposed parallel to the camshaft and engaged with the first and second slider housings for selectively moving the first and second slider housings and a control portion selectively rotating the control shaft for changing positions of the inner brackets. 1. A continuous variable valve duration apparatus comprising:a camshaft;first and second cam portions of a cam formed thereto respectively, of which the camshaft is inserted thereto and of which relative phase angles with respect to the camshaft are variable;first and second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively;first and second slider housings of which the first and second inner brackets are rotatably inserted thereto and of which relative position with respect to the camshaft are variable;a cam cap rotatably supporting the first and second cam portions respectively and of which each slider housing is slidably mounted thereto;a control shaft disposed parallel to the camshaft and engaged with the first and second slider housings for selectively moving the first and second slider housings; anda control portion selectively rotating the control shaft for changing positions of the inner brackets.2. The continuous variable valve duration apparatus of claim ...

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Номер записи: 60
07-04-2016 дата публикации

Device for a valve train for switching over the lift of gas-exchange valves of an internal combustion engine

Номер: US20160097306A1
Автор: Andreas Werler, Heiko Neukirchner, Uwe Richter
Принадлежит: IAV GMBH INGENIEURGESELLSCHAFT AUTO UND VERKEHR

A device for a valve train for switching over the lift of gas-exchange valves of an internal combustion engine comprising a camshaft on which at least one cam carrier with at least three different cam profiles is mounted so as to be non-rotatable and axially movable. The device includes an adjustment shaft arranged parallel to the camshaft and on which a first transmission element is mounted so as to be non-rotatable and axially movable, the first transmission element having a guide unit, a housing-fixed first guide element operatively connected to the guide unit, a second guide element operatively connected, on the one hand, to the guide unit and, on the other hand, to the cam carrier via a second transmission element, the second transmission element being connected to the cam carrier so as to be axially unmovable, and a push element operatively connected to the first transmission element.

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Номер записи: 61
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: 62
28-03-2019 дата публикации

Variable displacement engine including different cam lobe profiles

Номер: US20190093525A1
Автор: Danny Nakhle, Kevin Shinners, Robert Stephen Furby
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for an engine including cams having different lobe profiles. In one example, cams of a first cam group drive a plurality of deactivatable cylinder valves and cams of a second cam group drive a plurality of non-deactivatable cylinder valves. The cams of the first cam group include a different lobe profile relative to cams of the second cam group.

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Номер записи: 63
08-04-2021 дата публикации

ACTUATION APPARATUS

Номер: US20210102479A1
Автор: Vance Matthew
Принадлежит:

An actuation transmission apparatus for actuating a latching arrangement for latching and unlatching a first body and a second body of a switchable valve train component of an internal combustion engine, the latching arrangement being biased from an unlatched position where the first body and the second body are unlatched towards a latched position where the latching arrangement latches the first body and the second body together, the actuation transmission apparatus including: a shaft rotatable by an actuation source; a contacting element for contacting the latching arrangement; and a biasing device for biasing the contacting element rotationally with respect to the shaft. 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 latching arrangement to the unlatched position, via the contacting element, when the latching arrangement is in an un-actuatable state. 1. An actuation transmission apparatus for actuating a latching arrangement for latching and unlatching a first body and a second body of a switchable valve train component of an internal combustion engine , the latching arrangement being biased from an unlatched position where the first body and the second body are unlatched towards a latched position where the latching arrangement latches the first body and the second body together , the actuation transmission apparatus comprising:a shaft rotatable by an actuation source;a contacting element configured to contact the latching arrangement; anda biasing device configured to bias the contacting element rotationally with respect to the shaft;wherein, in use, the biasing device is configured to become biased by the shaft when the actuation source rotates the shaft when the actuation source attempts to actuate the latching arrangement to the unlatched position, via the contacting element, when the latching arrangement is in an un-actuatable state, whereby the biasing ...

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Номер записи: 64
09-06-2022 дата публикации

Mechanically timed cylinder deactivation system

Номер: US20220178280A1
Автор: Scott Robert Bardakjy
Принадлежит: Cummins Inc

A system and method for mechanically timed cylinder deactivation includes an inner passage in the camshaft that supplies fluid for deactivating one or more valve opening mechanisms associated with the cylinders of an internal combustion engine.

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Номер записи: 65
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: 66
27-04-2017 дата публикации

METHOD AND SYSTEM FOR ENGINE CONTROL

Номер: US20170114739A1
Автор: Glugla Chris Paul
Принадлежит:

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

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Номер записи: 67
07-05-2015 дата публикации

VARIABLE DISPLACEMENT SOLENOID CONTROL

Номер: US20150122207A1
Автор: Doering Jeffrey Allen, Rollinger John Eric, Willard Karen, Zdravkovski Danny
Принадлежит:

Methods are provided for improved control of valve activation/deactivation mechanisms. One example method comprises, adjusting an electromechanical actuator to actuate cylinder valve deactivation/activation mechanisms. The actuator is operated at multiple levels based on engine operating conditions. 1. An engine method , comprising:adjusting an electromechanical actuator to slide cam-lobes across a camshaft to change cylinder valve opening durations, including operating the actuator at a first level without a valve transition, operating the actuator at a second level without a valve transition in response to an increased potential for a valve transition, and operating the actuator at a third level inducing a valve transition, the second level between the first and third levels.2. The method of claim 1 , wherein the second level is higher than the first level claim 1 , and wherein the potential for the valve transition is increased based on increased or decreased depression by an operator of an accelerator pedal.3. The method of claim 1 , wherein the increased potential for valve transition includes the engine operating at a lower load than when the actuator was at the first level claim 1 , wherein the cylinder valve opening and closing durations include a first profile with valve lift duration claim 1 , and a second profile with no lift.4. The method of claim 1 , wherein the method further comprises operating the actuator at a fourth level maintaining the valve transition after operating the actuator at the third level claim 1 , the fourth level lower than the third level claim 1 , but higher than the first and second level.5. The method of claim 4 , wherein operating at the second level immediately follows operating at the first level claim 4 , and operating at the third level immediately follows operating at the second level claim 4 , and operating at the fourth level immediately follows operating at the third level.6. The method of claim 4 , wherein the engine ...

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Номер записи: 68
18-04-2019 дата публикации

SLIDING CAM MODULE WITH A BEARING ELEMENT AND A CAMSHAFT WITH A SLIDING CAM MODULE, AS WELL AS A COVER MODULE

Номер: US20190112950A1
Автор: MEHLHORN Tobias, Nitz Norbert, Schirmer Jens, Schwarzenthal Dietmar
Принадлежит:

The present invention relates to a sliding cam module for a camshaft, which comprises at least one sliding cam with at least one cam segment, comprising at least two cams with cam tracks that are different to one another as well as a closed bearing element, which is arranged on the sliding cam in a rotatable and axially non-displaceable manner for mounting the sliding cam, wherein the bearing element comprises a recipient area to hold at least one section of a locking device to lock the sliding cam in an axial position. Furthermore, the invention relates to a camshaft with at least one corresponding sliding cam module as well as a shaft, on which the sliding cam module is arranged in a rotationally fixed manner and can be moved in an axial direction along a longitudinal axis of the shaft and a cover module, which comprises a cylinder-head cover as well as a closed bearing element, which comprises a recipient area to hold at least one section of a locking device to lock the sliding cam in an axial position. 1. A sliding cam module for a camshaft , which comprises at least one sliding cam with at least one cam segment , comprising at least two cams with cam tracks that are different to one another as well asa closed bearing element, which is arranged on the sliding cam in a rotatable and axially non-displaceable manner for mounting the sliding cam, wherein the bearing element comprises a recipient area to hold at least one section of a locking device to lock the sliding cam in an axial position.2. The sliding cam module according to claim 1 , whereinthe locking device comprises a spring element as well as an engagement element interacting with the spring element.3. The sliding cam module according to claim 1 , whereinthe recipient area is a blind hole extending inwardly in the radial direction to receive at least the spring element of the locking device.4. The sliding cam module according to claim 1 , whereinthe recipient area is a latching element to hold the ...

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Номер записи: 69
18-04-2019 дата публикации

RECIPROCATING-PISTON MACHINE

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

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

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Номер записи: 70
13-05-2021 дата публикации

CONTROL DEVICE FOR ENGINE

Номер: US20210140378A1
Автор: Nishimoto Toshiaki, Nishio Takafumi, Okugawa Takaya, Yamamoto Takahiro
Принадлежит: MAZDA MOTOR CORPORATION

A control device for an engine including cylinders, and configured to perform a reduced-cylinder operation by idling some of cylinders. The control device includes a hydraulic valve-stopping mechanism which closes the intake and exhaust valves of the cylinders in response to establishment of the reduced-cylinder operation execution condition, a hydraulic variable valve timing mechanism capable of changing a phase of the exhaust valve of the engine , and an ECU which controls the valve-stopping mechanism and the hydraulic variable valve timing mechanism . In response to establishment of the reduced-cylinder operation execution condition, the ECU allows the hydraulic variable valve timing mechanism to execute the phase change to the exhaust valve , and subsequently allows the valve-stopping mechanism to bring the intake and exhaust valves of the cylinders into closed state. 1. A control device for an engine , the control device comprising:a hydraulic valve-stopping mechanism which holds an intake valve and an exhaust valve of at least an idle cylinder in a closed state in a reduced-cylinder operation, the control device being applicable to an engine including a plurality of cylinders, and configured to selectively execute a reduced-cylinder operation by setting at least one of the plurality of cylinders as the idle cylinder to be brought into an idle state, and an all-cylinder operation for operating all the cylinders;a hydraulic phase control mechanism which makes a phase of the intake valve or the exhaust valve of the engine variable; andprocessing circuitry configured to control the hydraulic valve-stopping mechanism and the hydraulic phase control mechanism, whereinin response to establishment of a reduced-cylinder operation execution condition as a condition for executing the reduced-cylinder operation, the processing circuitry allows the hydraulic phase control mechanism to execute a phase change to the intake valve or the exhaust valve, and subsequently, allows ...

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Номер записи: 71
03-05-2018 дата публикации

DEVICE FOR ADJUSTING A CAMSHAFT OF AN INTERNAL COMBUSTION ENGINE

Номер: US20180119585A1
Автор: Gruener Maria, Rigling Timo, Vincon Peter
Принадлежит: ETO MAGNETIC GMBH

A device for adjusting a camshaft of an internal combustion engine, comprising a lifting profile assembly () which is provided in a rotationally fixed manner on or at an axially movably mounted camshaft, and which forms a control groove (), having a groove depth that varies along a direction of rotation, and comprising actuating means (FIG. ) which are designed to cause an axial movement by controlled engaging in the control groove, and which have an electromagnetically drivable tappet unit (P P), wherein the tappet unit cooperates with the control groove in such a way that, when rotating, same can exert a reset- or driver effect on the tappet unit in a predetermined groove section, characterized in that the tappet unit has at least two neighbouring and preferably axially parallel individual tappets (P P), said tappets being independently drivable, the control groove, designed to engage using a first of the individual tappets (P), forms a radially peripheral wall at least along a peripheral groove side in such a way that a neighbouring second of the individual tappets (P) is positioned outside the control groove during rotation, and outside the control groove (), and the lifting profile assembly is provided with a radially height-variable and/or ramp section () for cooperating with the second individual tappet, in such a way that a resetting and/or driving of the second individual tappet (P) is caused when the first individual tappet (P) is reset or driven against a tappet drive direction using the control groove. 1101212. A device for adjusting a camshaft of an internal combustion engine , comprising a lifting profile assembly () which is provided in a rotationally fixed manner on or at an axially movably mounted camshaft , and which forms a control groove () , having a groove depth that varies along a direction of rotation , and comprising actuating means () which are designed to cause an axial movement by controlled engaging in the control groove , and which have ...

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Номер записи: 72
04-05-2017 дата публикации

VARIABLE VALVE TIMING MECHANISM

Номер: US20170122148A1
Автор: Bizub Jeffrey Jacob, Desai Pritam Prakash, Katta Rajesh, Ross Benjamin Earl, Rudnitzki Ryan Michael
Принадлежит:

Embodiments of the disclosure provide variable valve timing (VVT) mechanisms. A VVT mechanism according to the disclosure can include: a lever having a first end, a second end, and a fulcrum positioned therebetween; a length-adjustable push rod coupled to the first end of the lever and including an actuator therein; a rod valve coupled to the second end of the lever, the rod valve being configured to open and close an intake valve of an engine system based on a movement of the lever; and an engine control unit (ECU) operatively connected to the actuator of the length-adjustable push rod, wherein the ECU adjusts a length of the length-adjustable push rod based on an operating condition of the engine system. In addition or alternatively, the ECU can control an amount of cushioning fluid for the valves to affect the rate at which the intake valve opens or closes. 1. A variable valve timing (VVT) mechanism comprising:a lever having a first end, a second end, and a fulcrum positioned therebetween;a length-adjustable push rod coupled to the first end of the lever and including an actuator therein;a rod valve coupled to the second end of the lever, the rod valve being configured to open and close an intake valve of an engine system based on a movement of the lever; andan engine control unit (ECU) operatively connected to the actuator of the length-adjustable push rod, wherein the ECU adjusts a length of the length-adjustable push rod based on an operating condition of the engine system.2. The VVT mechanism of claim 1 , wherein the length-adjustable push rod further includes a first member and a second member each coupled to an opposing end of the actuator claim 1 , and wherein one of the first member and the second member further includes a sleeve for receiving the actuator therein.3. The VVT mechanism of claim 1 , further comprising:a spring positioned circumferentially about the rod valve, and interposed between the second end of the lever and the intake valve of the ...

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Номер записи: 73
04-05-2017 дата публикации

Camshaft Slider Control Systems And Methods

Номер: US20170122224A1
Автор: Gady Kevin Andrew, HAYDEN David N.
Принадлежит:

A slider control module, based on a mode command: selectively extends pins into one or more slider actuators of a camshaft slider. Contact between the pins and the grooves in the slider actuator(s) during rotation of a camshaft slides the camshaft slider axially along the intake camshaft. An actual mode module: determines a last stored indicator of the mode command; commands the slider control module to extend one of the pins to slide the camshaft slider and achieve the last stored indicator of the mode command; and, based on whether the one of the pins extended in response to the command, indicates that an actual mode is either: (i) the last stored indicator of the mode command; or (ii) another mode. The mode command module updates the mode command to the actual mode. 1. A camshaft slider control system of an engine of a vehicle , comprising:a mode command module that selectively sets an intake mode command to one of: a deactivation mode; a low lift mode; and a high lift mode; selectively extends a first pin of a first slider actuator into a first groove of a first grooved member of an intake camshaft slider, wherein contact between the first pin and the first groove during rotation of an intake camshaft slides the intake camshaft slider in a first direction axially along the intake camshaft; and', 'selectively extends a second pin of a second slider actuator into a second groove of a second grooved member of the intake camshaft slider, wherein contact between the second pin and the second groove during rotation of the intake camshaft slides the intake camshaft slider in a second direction axially along the intake camshaft; and, 'a slider control module that, based on the intake mode command determines a last stored indicator of the intake mode command;', 'commands the slider control module to extend one of the first and second pins to slide the intake camshaft slider and achieve the last stored indicator of the intake mode command; and', 'based on whether the one ...

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Номер записи: 74
25-04-2019 дата публикации

VARIABLE VALVE TRAIN

Номер: US20190120089A1
Автор: Kataoka Dai, KIKUCHI Kazunori, TAKADA Yoshihiro
Принадлежит: HONDA MOTOR CO., LTD.

A variable valve train is provided with cylindrical cam carriers axially slidably and co-rotatably supported on camshafts. The cam carriers have thereon, respectively, plural cam lobes different in cam profile and axially adjacent to each other. Cam changeover mechanisms are provided for axially shifting the cam carriers and for changing over the cam lobes for operating on engine valves. At least one of the cam changeover mechanisms is disposed between axes of the two camshafts and on the side of an engine crankshaft relative to the axes. 17.-. (canceled)8. A variable valve train of an internal combustion engine , comprising:two camshafts rotatably supported in a cylinder head of the internal combustion engine;a crankshaft for the engine;cylindrical cam carriers coaxially surrounding the camshafts, respectively, to be rotatable with and axially slidable relative to the camshafts, the cam carriers having thereon a plurality of cam lobes for operating engine valves and being different in cam profile and axially adjacent to each other; andcam changeover mechanisms for axially shifting the cam carriers to change over the cam lobes for operating the engine valves, changeover pins provided for advancing and retracting movements for fitting engagement with and disengagement from lead grooves formed around the cam carriers; and', 'changeover driving shafts provided with cam mechanisms for operating the changeover pins to advance and retract for fitting engagement with and disengagement from the lead grooves,, 'wherein the cam changeover mechanisms include respectivelywherein the cam lobes are operable to act on the engine valves by way of rocker arms, andwherein the rocker arms are rockably supported on the changeover driving shafts.9. The variable valve train according to claim 8 , wherein the lead grooves and the changeover driving shafts for operating the changeover pins are so related as to change over the cam lobes for operating the engine valves.10. The variable valve ...

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Номер записи: 75
25-04-2019 дата публикации

VALVE TRAIN ASSEMBLY

Номер: US20190120090A1
Автор: Andrisani Nicola, Cecur Majo, Contarin Fabiano, LORENZON Alessio, RAIMONDI Emanuele
Принадлежит:

A valve train assembly includes: a first group of one or more dual body rocker arms and a second group of one or more dual body rocker arms, the first group for controlling one or more valves of a first cylinder and the second group for controlling one or more valves of a second cylinder, each of the dual body rocker arms including a first body, a second body, and a latching arrangement for latching and unlatching the first body and the second body; and an actuator arrangement external to the dual body rocker arms for controlling the latching arrangement, the actuator arrangement including a shaft having a first set of one or more cams for controlling the latching arrangements of the first group of one or more dual body rocker arms and a second set of one or more cams for controlling the latching arrangements of the second group. 1. A valve train assembly comprising:a first group of one or more dual body rocker arms and a second group of one or more dual body rocker arms,the first group being configured to control one or more valves of a first cylinder and the second group being configured to control one or more valves of a second cylinder,each of the dual body rocker arms comprising a first body, a second body, and a latching arrangement configured to latch and unlatch the first body and the second body; andan actuator arrangement external to the dual body rocker arms configured to control the latching arrangement, the actuator arrangement comprising a shaft comprising a first set of one or more cams configured to control the latching arrangements of the first group of one or more dual body rocker arms and a second set of one or more cams configured to control the latching arrangements of the second group of one or more dual body rocker arms, shapes of the cams of the first set of one or more cams being different from shapes of the cams to the second set of one or more cams so as to control the latching arrangements on a per cylinder basis.2. The valve train ...

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Номер записи: 76
25-04-2019 дата публикации

Variable valve train

Номер: US20190120095A1
Автор: Dai Kataoka, Yoshihiro Takada
Принадлежит: Honda Motor Co Ltd

An engine variable valve train is provided with a cylindrical cam carrier fitted on a camshaft in a manner axially slidable to and co-rotatable with the camshaft. The cam carrier has therearound mutually adjoining low-speed and high-speed cam lobes selectively acting on the engine valve and being different in cam profile. The cam carrier has therearound lead grooves to be engaged with or disengaged from changeover pins for axial shift of the cam carrier. The lead grooves include a speed-increasing lead groove for changeover from the low-speed to the high-speed cam lobe and a speed-decreasing lead grooves for changeover from the high-speed to the low-speed cam lobe. The speed-increasing and speed-decreasing lead grooves are different in groove contour. This enables the cam carrier to axially shift smoothly and to improve the durability of the lead grooves.

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Номер записи: 77
25-08-2022 дата публикации

DYNAMIC SKIP FIRE TRANSITIONS FOR FIXED CDA ENGINES

Номер: US20220268227A1
Автор: Srinivasan Vijay
Принадлежит:

A variety of methods and arrangements are described for managing transitions between operational states of an internal combustion engine during skip fire operation of the engine. 1. A method of managing transitions between operational states of an internal combustion engine having a plurality of working chambers , the method comprising: generating a firing sequence that includes one or more firing and skip commands for operating the working chambers;', 'determining whether the skip command involves a working chamber that is not capable of being deactivated; and', 'when the skip command involves a working chamber that is not capable of being deactivated, cutting the fuel to the non-deactivatable working chamber., 'operating the engine in a skip fire manner during a transition comprising2. The method of claim 1 , wherein if none of the working chambers are individually deactivatable claim 1 , when the transitioning between the first displacement and the second displacement begins claim 1 , all skip commands are actuated as fuel cut commands.3. The method of claim 1 , wherein if none of the working chambers are individually deactivatable claim 1 , all skip commands are actuated as fuel cut commands.4. The method of claim 1 , further comprising adjusting operational parameters of the internal combustion engine to control output of the internal combustion engine to be substantially equal to a desired engine output.5. The method of claim 4 , wherein adjusting comprises controlling s a fuel injector of each working chamber in order to cut fuel to non-deactivatable working chambers.6. The method of claim 1 , wherein the internal combustion engine is a lean-burning engine.7. The method of claim 6 , wherein the internal combustion engine is a fixed-CDA engine in which the working chambers are not individually deactivatable.8. An engine controller to manage transitions between operational states of an internal combustion engine having a plurality of working chambers claim 6 , ...

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Номер записи: 78
16-04-2020 дата публикации

Valve Train Device

Номер: US20200116050A1
Автор: Lengfeld Markus, Meintschel Jens, Stolk Thomas, von Gaisberg-Helfenberg Alexander
Принадлежит: DAIMLER AG

A valve train device, in particular for an internal combustion engine, includes a support element secured to a housing, at least one axially moveable cam unit associated with a valve, and at least one switch unit for axially moving at least one part of the cam unit having at least one displacement body which is provided to be introduced for axial movement at least functionally between the support element and the cam unit. The cam unit has at least three cam paths. 19.-. (canceled)10. A valve train device , comprising:a support element secured to a housing;an axially shiftable cam unit that is associated with a valve;a switch unit for axially shifting the cam unit, wherein the switch unit has a first displacement body and a second displacement body;wherein the cam unit has a first cam track, a second cam track, and a third cam track;wherein the first displacement body and the second displacement body are separable from the cam unit at a same time in a switch preparation for activating and/or deactivating the third cam track; anda shifting element, wherein at least a part of the switch unit is axially adjustable with respect to the support element by the shifting element.11. The valve train device according to claim 10 , wherein the shifting element is disposed inside the switch unit.12. The valve train device according to claim 11 , wherein the shifting element axially shifts the first displacement body and the second displacement body inside the switch unit.13. The valve train device according to claim 10 , wherein the shifting element is disposed outside the switch unit.14. The valve train device according to claim 10 , wherein an entirety of the switch unit is axially adjustable with respect to the support element by the shifting element.15. A method for operating the valve train device according to . The invention relates to a valve train device and to a method for operating a valve train device.A valve train device is already known from DE 10 2015 014 175, in ...

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Номер записи: 79
12-05-2016 дата публикации

CAMSHAFT FOR AN INTERNAL COMBUSTION ENGINE AND USE THEREFORE

Номер: US20160130990A1
Автор: Schützle Artur
Принадлежит:

A camshaft for an internal combustion engine, with a drivable basic shaft and a cam piece which is mounted in the basic shaft, wherein the basic shaft passes through a passage in the cam piece, and the cam piece is mounted in the basic shaft in a rotationally fixed and axially displaceable manner. In the case of such a camshaft, it is provided that the basic shaft has a polygonal profile, and the passage in the cam piece has a complementary polygonal profile for receiving the basic shaft. The camshaft is preferably used in a motorcycle which has an internal combustion engine with two cylinders. 1. A camshaft for an internal combustion engine , with a drivable basic shaft and a cam piece which is mounted in the basic shaft , wherein the basic shaft passes through a passage in the cam piece , and the cam piece is mounted in the basic shaft in a rotationally fixed and axially displaceable manner , wherein the basic shaft has a polygonal profile , and the passage in the cam piece has a complementary polygonal profile for receiving the basic shaft.2. The camshaft as claimed in claim 1 , wherein the polygonal profiles of basic shaft and passage have an identical shape claim 1 , wherein the cross section of the polygonal profile of the basic shaft is smaller than the cross section of the polygonal profile of the passage.3. The camshaft as claimed in claim 1 , wherein the respective polygonal profile is of substantially four-cornered claim 1 , in particular square claim 1 , design.4. The camshaft as claimed in claim 1 , wherein the respective polygonal profile has rounded corners.5. The camshaft as claimed in claim 1 , wherein the respective polygonal profile has an outwardly curved contour in a region connecting respective adjacent corners.6. The camshaft as claimed in claim 1 , wherein the basic shaft is connected in the region of one end to an externally driveable drive element.7. The camshaft as claimed in claim 1 , wherein the cam piece has a slotted guide element and ...

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Номер записи: 80
21-05-2015 дата публикации

Method for operating a valve train of an internal combustion engine and corresponding valve train

Номер: US20150136052A1
Автор: Johann Graf
Принадлежит: Audi AG

A method and apparatus for operating a valve train of an internal combustion engine having a main camshaft for which at least one rotationally-fixed cam carrier is provided that can be shifted between two axial positions is disclosed. An actuator cooperates with at least one shift gate to axially shift the cam carrier into a target position. The actuator comprises a driver that is extended in the direction of at least one sliding slot of the shift gate to shift the cam carrier. The sliding slot has an ejection ramp in an ejection region that ejects the driver out of the sliding slot until the conclusion of the shift. A voltage induced in the actuator by the ejection is detected, the induced voltage is integrated across a rotational-angle range associated with the ejection region, and a confirmation signal is generated when the integrated voltage exceeds a threshold level.

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Номер записи: 81
02-05-2019 дата публикации

LUBRICATING STRUCTURE OF VARIABLE VALVE TRAIN

Номер: US20190128153A1
Автор: Kataoka Dai, TAKADA Yoshihiro
Принадлежит: HONDA MOTOR CO., LTD.

An engine camshaft has a lubricating oil passage formed along the longitudinal axis of the same, a cam communicating oil hole is radially formed from the lubricating oil passage to an outer peripheral surface of the camshaft at the same axial position as an engine valve. Cam lubrication holes are radially formed from the inside to cam surfaces of cam lobes formed around a cam carrier fitted around the camshaft. One of the cam lubrication holes of the cam lobes shifted to a position for operating the valve communicates with the cam communicating oil hole of the camshaft to supply lubricant oil. 1. A lubricating structure of a variable valve train , comprising:a camshaft rotatably supported in a cylinder head of an internal combustion engine;a cylindrical cam carrier fitted on and around the camshaft axially slidably relative to the camshaft and co-rotatably with the camshaft, the cam carrier having therearound a plurality of cam lobes different in cam profile and axially adjacent to each other; anda cam changeover mechanism for axially shifting the cam carrier to change over the cam lobes for operating on an engine valve; wherein:the camshaft includes therein a lubricant oil passage along a longitudinal axis of the camshaft, and the camshaft includes a cam communicating oil hole radially formed from the lubricant oil passage to an outer peripheral surface of the camshaft, at an axial position corresponding to an axial position of the engine valve; andthe cam carrier includes cam lubrication holes formed radially from inside thereof to cam surfaces of the cam lobes, respectively, and the cam communicating oil hole of the camshaft is located at an axial position of the camshaft at which one of the cam lubrication holes of the cam carrier is axially located so as to communicate with the cam communicating oil hole, when the one cam lubrication hole is at an axially shifted position for operating the engine valve.2. The lubricating structure of the variable valve train ...

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Номер записи: 82
23-04-2020 дата публикации

APPARATUS AND METHOD FOR CONTROLLING DEACTIVATION OF CYLINDERS IN ENGINE

Номер: US20200123994A1
Автор: Choi Myung Sik, KIM Won Gyu, KWAK Young Hong, PARK Kyoung Seok, Shin Gee Wook, Sim Ki Seon
Принадлежит:

An apparatus and method for controlling deactivation of cylinders in an engine may include a sensor that measures pressure inside an intake manifold of the engine, an oil control valve (OCV) that deactivates the cylinders in the engine, and a controller that is configured to control the OCV to deactivate a specific cylinder in the engine, based on the pressure inside the intake manifold. 1. An apparatus for controlling deactivation of cylinders in an engine , the apparatus comprising:a sensor configured to measure pressure inside an intake manifold of the engine;an oil control valve (OCV) configured to deactivate the cylinders in the engine; anda controller configured to control the OCV to deactivate a predetermined cylinder among the cylinders in the engine, based on the pressure inside the intake manifold.2. The apparatus of claim 1 , wherein the controller is configured to:set a plurality of reference ranges and a number of cylinders to be deactivated for each reference range of the plurality of reference ranges; anddetermine a number of cylinders to be deactivated, based on a reference range in which the pressure inside the intake manifold is included.3. The apparatus of claim 2 , wherein the controller is configured to:determine an order in which all the cylinders in the engine are deactivated, to prevent the predetermined cylinder from being continually deactivated.4. The apparatus of claim 3 , wherein the controller is configured to:periodically modify the order in which all the cylinders in the engine are deactivated.5. The apparatus of claim 4 , wherein the controller is configured to:set a plurality of groups based on a firing order of the cylinders in the engine; andperiodically modify an order of the groups.6. The apparatus of claim 5 , wherein the controller is configured to:periodically modify an order in which cylinders in each group of the plurality of groups are deactivated.7. The apparatus of claim 6 , wherein the controller is configured to:modify ...

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Номер записи: 83
03-06-2021 дата публикации

Valve Drive Device, in Particular for an Internal Combustion Engine of a Motor Vehicle, and Method for Operating Such a Valve Drive Device

Номер: US20210164369A1
Автор: Stolk Thomas, von Gaisberg-Helfenberg Alexander
Принадлежит: DAIMLER AG

A valve drive device has a camshaft which includes a shaft element and a cam piece which can be driven by the shaft element and a first cam effecting a first stroke of a valve and a second cam effecting a second stroke of the valve, and is displaceable in the axial direction of the camshaft relative to the shaft element between a first position, in which the valve can be actuated by the first cam, and a second position in which the valve can be actuated by the second cam, and has an electrically controllable actuator via which the cam piece is displaceable relative to the shaft element in the axial direction as a result of an electrical control of the actuator. The actuator pushes the cam piece alternately back and forth between the positions in the case of successive electrical controls occurring with the same polarity. 110.-. (canceled)1110. A valve drive device () , comprising:{'b': 12', '18', '20', '18', '24', '26', '22', '12', '18', '24', '26, 'a camshaft () which comprises a shaft element () and a cam piece () which is drivable by the shaft element () and which has a first cam () effecting a first stroke of a valve and a second cam () effecting a second stroke of the valve different from the first stroke and which is displaceable in an axial direction () of the camshaft () relative to the shaft element () between a first position, in which the valve is actuatable by the first cam (), and a second position in which the valve is actuatable by the second cam ();'}{'b': 28', '28', '20', '22', '12, 'an electrically controllable actuator () via which, as a result of an electrical control of the actuator (), the cam piece () is displaceable relative to the shaft element in the axial direction () of the camshaft ();'}{'b': 28', '20, 'wherein the actuator () is configured to push the cam piece () alternately back and forth between the first and second positions in a case of successive electrical controls with a same polarity; and'}{'b': 30', '28', '28, 'an electronic ...

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Номер записи: 84
18-05-2017 дата публикации

VALVE TRAIN HAVING A SLIDING CAM ELEMENT

Номер: US20170138231A1
Автор: Müller Ulf
Принадлежит: THYSSENKRUPP PRESTA TECCENTER AG

A valve drive may include a sliding cam element that is held on a carrier shaft so as to be axially displaceable along an axis of rotation of the carrier shaft. The sliding cam element may include at least one cam profile group with cam profile sections of mutually different form. The valve drive may further include a pick-off element by way of which a control movement can be picked off from the cam profile sections and transmitted to a valve. The sliding cam element may also include a second cam profile group that is similar or identical to the first cam profile group and, which for the joint control of one valve, may interact with the pick-off element. 110.-. (canceled)11. A valve drive comprising:a sliding cam element that is disposed on a carrier shaft so as to be axially displaceable along an axis of rotation of the carrier shaft, wherein the sliding cam includes a first cam profile group with cam profile sections of mutually different form and a second cam profile group with cam profile sections of mutually different form, wherein the cam profile sections of the first cam profile group are the same as the cam profile sections of the second cam profile group; anda pick-off element by way of which a control movement is picked off from the cam profile sections and transmitted to a valve, wherein the two cam profile groups interact with the pick-off element to jointly control the valve.12. The valve drive of wherein the first and second cam profile groups are adjacent and adjoin one another on the sliding cam element.13. The valve drive of wherein a first roller of the pick-off element interacts with the cam profile sections of the first cam profile group and a second roller of the pick-off element interacts with the cam profile sections of the second cam profile group.14. The valve drive of wherein the first and second rollers are disposed along a common roller axis.15. The valve drive of wherein a diameter of the first roller is equal to a diameter of the second ...

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Номер записи: 85
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: 86
30-04-2020 дата публикации

DEVICE AND METHOD FOR CONTROLLING ENGINE

Номер: US20200132001A1
Автор: HASHIMOTO Masanori, Nishimoto Toshiaki, Nishio Takafumi, Yamamoto Takahiro
Принадлежит: MAZDA MOTOR CORPORATION

A controller increases an actual oil pressure up to a transient oil pressure (an actuating oil pressure) and then supplies oil adjusted to have the transient oil pressure (the actuating oil pressure) to valve stopping mechanisms to actuate the valve stopping mechanisms. The controller, when actuating the valve stopping mechanisms, starts increase in an intake filling amount when the actual oil pressure increases up to a predetermined determination value set at the transient oil pressure (the actuating oil pressure) or lower. 1. A device for controlling an engine including a plurality of cylinders and switching between all-cylinder operation , in which all the cylinders are operated , and deactivated cylinder operation , in which some of the cylinders are deactivated , the device comprising:a valve stopping mechanism configured to actuate to switch the engine from the all-cylinder operation to the deactivated cylinder operation when oil pressurized up to a predetermined actuating oil pressure is supplied;an oil supply device configured to discharge oil to a hydraulic passage connected to the valve stopping mechanism and to adjust an oil pressure of the oil;a control valve configured to supply oil from the hydraulic passage to the valve stopping mechanism;a filling amount adjusting device configured to adjust an intake filling amount indicating an amount of gas to be supplied to each of the cylinders;a controller connected to the oil supply device, the control valve, and the filling amount adjusting device and configured to output a control signal to each of the oil supply device, the control valve, and the filling amount adjusting device to operate the engine; andan oil pressure sensor connected to the controller, and configured to detect an oil pressure of oil flowing through the hydraulic passage and to output a signal indicating a detection result to the controller,the controller outputting a control signal to the oil supply device to increase the oil pressure ...

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Номер записи: 87
09-05-2019 дата публикации

Valve Drive Device, in Particular for an Internal Combustion Engine

Номер: US20190136725A1
Автор: Schroeer Dietmar, Stolk Thomas, von Gaisberg-Helfenberg Alexander
Принадлежит: DAIMLER AG

A valve train device, in particular for an internal combustion engine, includes at least one camshaft which has at least one cam element with at least one multi-track cam. The cam element is provided to be axially displaced by a maximum displacement path. The valve train device further includes a limiting mechanism which is provided to limit in at least one operating state the displacement path of the cam element to a switching path of the switching operation. 111.-. (canceled)12. A valve drive device , comprising:a camshaft having a cam element with a multi-track cam that is axially displaceable by a maximum displacement path; anda limiting mechanism, wherein, in at least one operating condition, a displacement path of the cam element is limited to a switching path for a switching operation.13. The valve drive device according to further comprising a positive-locking element which is connected to the cam element and provides for a positive-locking connection to the limiting mechanism.14. The valve drive device according to claim 13 , wherein the limiting mechanism includes a stop element with two opposite stop surfaces for the positive-locking element.15. The valve drive device according to claim 14 , wherein the stop surfaces have a distance from one another which limits a displacement of the cam element to a value of a distance between adjacent cam tracks of the multi-track cam.16. The valve drive device according to claim 14 , wherein the limiting mechanism includes an auxiliary actuator and wherein the stop element is displaceable by the auxiliary actuator.17. The valve drive device according to further comprising a switching actuator for axially displacing the cam element claim 12 , wherein the switching actuator includes a switching element which is in permanent operative connection with the cam element and includes a drive for axial displacement of the switching element claim 12 , wherein the drive is decoupleable from the switching element.18. The valve ...

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Номер записи: 88
26-05-2016 дата публикации

Camshaft assembly for an internal combustion engine

Номер: US20160146062A1
Автор: Alan W. Hayman, Robert S. McAlpine
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A camshaft assembly for an internal combustion engine includes a camshaft, a first lobe set, and a second lobe set, extending along, and rotatable about, a cam axis. The first lobe set includes a first, second, and third lobe. The second lobe set includes a first and second lobe. The first lobe set is movable along the cam axis between a first, second, and third position. The second lobe set is movable along the cam axis between a first and second position. The first and second position of each of the first and second lobe sets corresponds to lift of a respective valve stem in the engine. The third position of the first lobe set corresponds to zero lift of the respective valve stem to provide cylinder deactivation of a corresponding cylinder within the engine.

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Номер записи: 89
24-05-2018 дата публикации

Sliding Contact For Electrically Actuated Rocker Arm

Номер: US20180142583A1
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, Stetch Dale Arden, Tembreull Thomas Michael, VanDeusen Brian Karl, Yankovic Eric John, Zurface Austin Robert
Принадлежит: EATON CORPORATION

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 a 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 surfaces of two distinct parts; andthe 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.2. A valvetrain according to claim 1 , wherein:one of the two distinct parts is mounted to the rocker arm; andthe mounting of the other of the two distinct parts consists of mountings to structures that are not part of the rocker arm assembly.3. A valvetrain according to claim 2 , wherein the part not mounted to the rocker arm assembly is mounted to a frame that has a base that fits around a pivot that provides a fulcrum for the rocker arm assembly.4. A ...

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Номер записи: 90
04-06-2015 дата публикации

VARIABLE VALVE ACTUATION APPARATUS FOR MULTI-CYLINDER INTERNAL COMBUSTION ENGINE AND CONTROLLER FOR THE VARIABLE VALVE ACTUATION APPARATUS

Номер: US20150152756A1
Автор: Nakamura Makoto
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable valve actuation apparatus for a multi-cylinder internal combustion engine employs a cylinder cutoff mechanism configured to enable intake and exhaust valves of a #1-cylinder to be kept inactive, and an intake-side variable valve lift mechanism configured to enable a valve lift amount of each of intake valves of a #2-cylinder to be switched between a given first lift amount created by a small-lift cam profile and a given second lift amount created by a middle-lift cam profile in a stepwise fashion depending on a change in engine operating condition from startup to maximum torque operation. The intake-side variable valve lift mechanism is further configured to enable the valve lift amount of each of the intake valves of the #2-cylinder to be selected from the given first lift amount and the given second lift amount during a cylinder cutoff mode in which the #1-cylinder is kept inactive. 1. A variable valve actuation apparatus for a multi-cylinder internal combustion engine comprising:a cylinder cutoff mechanism configured to enable a cylinder cutoff mode in which intake and exhaust valves included in one engine-cylinder group of a plurality of engine-cylinder groups are kept inactive; andan intake-side variable valve lift mechanism configured to enable a valve lift amount of each of intake valves included in the other engine-cylinder group of the plurality of engine-cylinder groups to be switched between a given first intake-valve lift amount and a given second intake-valve lift amount relatively greater than the given first intake-valve lift amount in a stepwise fashion,wherein the intake-side variable valve lift mechanism is configured to enable the valve lift amount of each of the intake valves of the other engine-cylinder group to be selected from the given first intake-valve lift amount and the given second intake-valve lift amount during the cylinder cutoff mode in which the one engine-cylinder group is kept inactive.2. A variable valve actuation ...

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Номер записи: 91
02-06-2016 дата публикации

Continuous variable valve duration apparatus and control method using the same

Номер: US20160153324A1
Автор: Back Sik Kim, In Sang RYU, Ingee Suh, Kiyoung Kwon, Kyoung Pyo Ha
Принадлежит: Hyundai Motor Co

A control method using a continuous variable duration apparatus provided to adjust opening duration of an intake valve of an engine may include: setting a desired deceleration speed when a vehicle starts decelerating, determining a pumping loss by the engine that is required for the desired deceleration speed, setting desired duration for the required pumping loss by the engine, and controlling duration of the intake valve on the basis of the set desired duration.

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Номер записи: 92
31-05-2018 дата публикации

Method and device for operating a drive unit, drive unit, motor vehicle

Номер: US20180149047A1
Автор: Michael Baeuerle, Michael Nau
Принадлежит: ROBERT BOSCH GMBH

A method for operating a drive apparatus, having a reciprocating-piston engine and an exhaust-gas-driven turbocharger, of a motor vehicle, the reciprocating-piston engine being operated in a four-stroke mode during on-load operation; and the exhaust-gas-driven turbocharger having an electrical machine, in particular a media gap machine, that is operated in generator mode during overrun operation of the reciprocating-piston engine. During overrun operation, the reciprocating-piston engine is operated in a two-stroke mode.

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Номер записи: 93
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: 94
17-06-2021 дата публикации

Valve actuation system comprising in-series lost motion components for use in cylinder deactivation and auxiliary valve actuations

Номер: US20210180481A1
Автор: G. Michael Gron, Jr., Justin D. Baltrucki
Принадлежит: Jacobs Vehicle Systems Inc

A valve actuation system comprises a valve actuation motion source configured to provide a main valve actuation motion and an auxiliary valve actuation motion for actuating at least one engine valve via a valve actuation load path. A lost motion subtracting mechanism is arranged in the valve actuation load path and configured, in a first default operating state, to convey at least the main valve actuation motion and configured, in a first activated state, to lose the main valve actuation motion and the auxiliary valve actuation motion. Additionally, a lost motion adding mechanism configured, in a second default operating state, to lose the auxiliary valve actuation motion and configured, in a second activated state, to convey the auxiliary valve actuation motion, wherein the lost motion adding mechanism is in series with the lost motion subtracting mechanism in the valve actuation load path at least during the second activated state.

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Номер записи: 95
01-06-2017 дата публикации

MULTIPLE VARIABLE VALVE LIFT APPARATUS

Номер: US20170152770A1
Автор: Choi Byong Young
Принадлежит: HYUNDAI MOTOR COMPANY

A multiple variable valve lift apparatus may include a moving cam formed in a hollow cylindrical shape into which a camshaft is inserted. In particular, the moving cam rotates together with the camshaft, moves in an axial direction of the camshaft, and includes a cam guide protrusion and a plurality of cams realizing different valve lift with each other. Moreover, the apparatus includes: an operating unit selectively guiding the cam guide protrusion; a controller controlling the operating unit; a valve opening/closing unit contacting with any one cam of the cams; and at least two pins disposed at the operating unit so as to guide the cam guide protrusion. The cam guide protrusion includes an inserted portion being selectively inserted between the pins and a shift portion. 1. A multiple variable valve lift apparatus comprising: 'wherein the moving cam comprises a cam guide protrusion and a plurality of cams configured to perform a different valve lift with each other;', 'a moving cam formed in a hollow cylindrical shape in which a camshaft inserted into the moving cam, the moving cam configured to rotate together with the camshaft and to move in an axial direction of the camshaft,'}an operating unit configured to selectively guide the cam guide protrusion so as to move the moving cam in the axial direction;a controller configured to control the operating unit;a valve opening/closing unit configured to contact with any one cam of the plurality of cams so as to open or close a valve; andat least two pins disposed at the operating unit so as to guide the cam guide protrusion,wherein an inserted portion being selectively inserted between one of said at least two pins and a shift portion formed so as to be guided between said at least two pins of the operating unit is formed at the cam guide protrusion, andthe inserted portion is formed to be thinner than the shift portion.2. The apparatus of claim 1 , wherein the shift portion is formed to be gradually thick from the ...

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Номер записи: 96
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: 97
09-06-2016 дата публикации

MULTIPLE VARIABLE VALVE LIFT APPARATUS

Номер: US20160160696A1
Автор: HWANG Gyu Han
Принадлежит:

A multiple variable valve lift apparatus includes a camshaft. At least two cam portions are disposed on an exterior circumference of the camshaft and including a high cam and a normal cam. A cylinder deactivation device is configured to perform a lever motion by one of the high cam or the normal cam and to be operated by hydraulic pressure. At least two lift operating portions are disposed on the exterior circumference of the camshaft and moving the cam portions in an axial direction of the camshaft. An operation control portion selectively moves the operating portions in the axial direction of the camshaft. A guide rail is formed in a groove of an exterior circumference of the lift operating portions into which a pin is inserted. The guide rail guides the pin according to rotation of the camshaft and the operating portions. 1. A multiple variable valve lift apparatus , comprising:a camshaft rotating to open and close valves;at least two cam portions disposed on an exterior circumference of the camshaft and including a high cam and a normal cam, the at least two cam portions moving in an axial direction of the camshaft and rotating together with the camshaft;a cylinder deactivation device connected to the valves and configured to perform a lever motion by one of the high cam or the normal cam, the cylinder deactivation device being operated by hydraulic pressure to selectively realize zero valve lift;at least two lift operating portions disposed on an exterior circumference of the camshaft, the at least two operating portions moving in the axial direction of the camshaft to move the at least two cam portions in the axial direction of the camshaft;an operation control portion selectively moving the at least two lift operating portions in the axial direction of the camshaft;a pin attached to the operation control portion; anda guide rail formed in a groove of an exterior circumference of each of the operating portions, such that the pin is inserted into the guide rail ...

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Номер записи: 98
09-06-2016 дата публикации

Cylinder deactivation engine

Номер: US20160160701A1
Автор: Myungsik Choi, Won Gyu Kim, Wootae Kim, Young Hong Kwak
Принадлежит: Hyundai Motor Co

A cylinder deactivation engine may include: one or more deactivation cylinders to be selectively deactivated; one or more non-deactivation cylinders not to be deactivated; cylinder deactivation apparatuses operably connected to the deactivation cylinders and operated by hydraulic pressure to selectively implement a zero lift of a valve or valves of the deactivation cylinders; one or more variable valve lift apparatuses operably connected to the non-deactivation cylinders and operated by the hydraulic pressure to selectively change a lift of a valve of the non-deactivation cylinders; a hydraulic pump that generates the hydraulic pressure for operating the variable valve lift apparatuses and the cylinder deactivation apparatuses; and one or more oil control valves that control the hydraulic pressure from the oil pump so that the hydraulic pressure is selectively supplied to the variable valve lift apparatuses and the cylinder deactivation apparatuses.

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Номер записи: 99
09-06-2016 дата публикации

Continuous variable valve duration apparatus and engine provided with the same

Номер: US20160160702A1
Автор: Back Sik Kim, Kyoung Pyo Ha, You Sang SON
Принадлежит: Hyundai Motor Co

A continuous variable valve duration apparatus may include a camshaft, a plurality of wheels mounted to the camshaft, of which a wheel key is formed thereto respectively, a plurality of cam portions of which a cam and a cam key are formed thereto respectively, of which the camshaft is inserted thereto, of which relative phase angle with respect to the camshaft is variable, a plurality of inner brackets connected with the each wheel key and the each cam key, a plurality of slider housings of which the each inner bracket is rotatably inserted thereto, and movable up and down direction of an engine, a control portion selectively moving the slider housings to adjust relative position of a rotation center of the inner brackets and a guider guiding movement of the sliding housings.

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Номер записи: 100