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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 5844. Отображено 100.
12-01-2012 дата публикации

Variable valve timing control apparatus

Номер: US20120006290A1
Принадлежит: Aisin Seiki Co Ltd

A variable valve timing control apparatus, includes a drive-side rotary member, a driven-side rotary member, a partition portion arranged at least one of the drive-side rotary member and the driven-side rotary member to partition a fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, a seal member arranged at a portion of the partition portion, which faces the other one of the drive-side rotary member and the driven-side rotary member, the seal member avoiding a hydraulic fluid from leaking between the advanced angle chamber and the retarded angle chamber, and a biasing member biasing the seal member, wherein at least one of the partition portion and a facing surface of the other one of the drive-side rotary member and the driven-side rotary member facing the partition portion is defined by an inclined surface of a tapered portion.

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08-03-2012 дата публикации

Variable valve timing control apparatus

Номер: US20120055429A1
Принадлежит: Denso Corp

A variable valve timing control apparatus includes an abnormality determining portion and a valve controller. The abnormality determining portion determines whether there is an abnormality in a system of a VCT phase control in which an oil pressure control valve is controlled in a manner that an actual VCT phase coincides with a target phase. The valve controller controls the oil pressure control valve to drive a lock pin in a locking direction so as to lock the VCT phase when the abnormality determining portion determines that there is an abnormality in the system of the VCT phase control.

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21-06-2012 дата публикации

Control valve

Номер: US20120152189A1
Автор: Ali Bayrakdar
Принадлежит: Schaeffler Technologies AG and Co KG

A control valve for a device for the variable adjustment of the valve timing of gas exchange valves of an internal combustion engine. The control valve has a substantially hollow-cylindrical valve box, a control piston and a securing ring. The valve box is arranged in a receptacle inside the device, the securing ring projects over the valve box in the radial direction and the control piston is arranged so as to be axially displaceable inside the valve box.

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16-08-2012 дата публикации

Oil supply apparatus for internal combustion engine

Номер: US20120204823A1
Автор: Hiroshi Kanai
Принадлежит: Toyota Motor Corp

An oil supply apparatus includes an oil pump that is driven by an internal combustion engine; a supply passage that is connected to a discharge side of the oil pump; a lubricant passage that leads hydraulic fluid from the supply passage to a portion to be lubricated that is provided in the internal combustion engine; a hydraulic passage that leads hydraulic fluid from the supply passage to a variable valve mechanism; a flow regulating valve capable of regulating a flowrate of hydraulic fluid that flows through the lubricant passage; and a control apparatus that controls the flow regulating valve in a closing direction at startup of the internal combustion engine such that a pressure of hydraulic fluid that is led to the variable valve mechanism when the internal combustion engine is being cranked comes to be equal to or greater than a predetermined target pressure.

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06-09-2012 дата публикации

Engine assembly including cam phaser assembly aid pin

Номер: US20120222637A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

An engine assembly includes an engine structure, a camshaft supported on the engine structure, a first cam phaser coupled to a first axial end of the camshaft, and a locating pin. The camshaft includes a first shaft, a second shaft, a first cam lobe and a second cam lobe. The first shaft defines a first opening. The second shaft is supported within the first shaft and defines a second opening. The first cam lobe is located on and fixed for rotation with the first shaft. The second cam lobe may be located on the first shaft and fixed for rotation with the second shaft. During assembly, the first cam phaser is located on the camshaft and the locating pin may be inserted through the first and second openings to rotationally fix the first and second shafts. The first cam phaser is then secured to the camshaft.

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04-10-2012 дата публикации

System and method for cam phaser control in an engine

Номер: US20120247411A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A control system for an engine includes a position determination module and a position control module. The position determination module determines a first cam phaser position for starting the engine prior to engine shut down, and determines a second cam phaser position for starting the engine while the engine is shut down. The position control module adjusts a cam phaser to the first cam phaser position at engine shut down. The position control module adjusts the cam phaser from the first cam phaser position to the second cam phaser at engine start up when a difference between the first cam phaser position and the second cam phaser position is greater than a predetermined difference. A method for controlling an engine is also provided.

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18-10-2012 дата публикации

Internal combustion engine, with a system for variable actuation of the intake valves provided with improved solenoid valves, and solenoid valve for this engine

Номер: US20120260871A1
Принадлежит: Centro Ricerche Fiat SCpA

An internal combustion engine for motor-vehicles, includes a system for variable actuation of the intake valves of the engine having a solenoid valve controllable between a closed condition and an open condition wherein it places a pressurized fluid chamber in communication with an exhaust chamber, with the aim of decoupling the intake valve from the respective tappet and causing the quick closing of the intake valve due to the respective return spring. The solenoid valve has a valve element with a cylindrical body having a first conical surface portion and a second conical surface portion. The conical surface portions are defined by the axially opposite ends of a circumferential groove formed on the valve element. The first conical surface portion cooperates with the valve seat. The other conical surface portion has an outer diameter substantially identical to the diameter of the annular edge defining the valve seat.

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15-11-2012 дата публикации

Engine assembly including camshaft actuator

Номер: US20120285405A1
Автор: Ronald Jay Pierik
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

An engine assembly may include an engine structure, a camshaft supported for rotation on the engine structure, a drive member and a camshaft actuation assembly. The camshaft may include a first shaft, a second shaft located within the first shaft and rotatable relative to the first shaft, a first cam lobe located on the first shaft and fixed for rotation with the first shaft and a second cam lobe supported for rotation on the first shaft and fixed for rotation with the second shaft. The drive member may be fixed to a first axial end of the camshaft and rotationally driven to drive rotation of the camshaft. The camshaft actuation assembly may include an actuator coupled to a second axial end of the camshaft and rotationally fixed to the engine structure and relative to the camshaft.

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20-12-2012 дата публикации

Valve timing control apparatus of internal combustion engine

Номер: US20120318218A1
Автор: Hiroyuki Kato
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

In a valve timing control apparatus of an internal combustion engine, a first lock member is installed axially movably on either one of a housing and a vane member, a first lock recess section with which the first lock member is engaged when the vane member is relatively revolved at an intermediate phase position between most advance and retardation angle sides is installed on the other of the housing and the vane member, and a third lock recess section is installed at a retardation angle side in a circumferential direction of the housing with respect to the first lock recess section to limit a relative rotary position of the vane member at the most retardation angle side by an engagement of the first lock member with the third lock recess section.

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03-01-2013 дата публикации

Valve timing control apparatus and method

Номер: US20130000578A1
Принадлежит: Hilite Germany GmbH

A valve timing control apparatus for a combustion engine according to which a rotational member, such as a sprocket, is driven by said combustion engine, a rotor is mechanically coupled with a camshaft for controlling opening and closing of cylinder valves of said combustion engine, a first configuration is provided in which the rotor is locked to the rotational member; and a second configuration is provided in which the rotor is unlocked from said rotational member. In another aspect an operating method of said valve timing control apparatus for adjusting a valve timing of a combustion engine is provided. The apparatus controls a relative rotation between a camshaft and an output shaft, which can either be prevented or permitted.

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24-01-2013 дата публикации

Harmonic Drive Camshaft Phaser with Lock Pin for Selectivley Preventing a Change in Phase Relationship

Номер: US20130019825A1
Автор: Thomas H. Fischer
Принадлежит: Delphi Technologies Inc

A camshaft phaser includes a housing. A harmonic gear drive unit is disposed within the housing and includes a circular spline and a dynamic spline, a flexspline disposed within the circular spline and the dynamic spline, a wave generator disposed within the flexspline, and a rotational actuator connectable to the wave generator. One of the circular spline and the dynamic spline is fixed to the housing. A hub is rotatably disposed within the housing and attachable to the camshaft and fixed to the other of the circular spline and the dynamic spline. A lock pin is provided for selective engagement with a lock pin seat such that engagement of the lock pin with the lock pin seat prevents relative rotation between the circular spline and the dynamic spline.

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24-01-2013 дата публикации

Camshaft adjuster

Номер: US20130019829A1
Автор: Jürgen Weber
Принадлежит: Schaeffler Technologies AG and Co KG

A camshaft adjuster ( 1 ) having a drive element ( 2 ), an output element ( 3 ), and a cover element ( 4 ), the cover element ( 4 ) being joined to the drive element ( 2 ) or to the output element ( 3 ) and having defined, deformable zones ( 5 ) that deform under the action of a force F, resulting in a deformation of the cover element ( 4 ), whereby the cover element ( 4 ) can be disassembled from or assembled to the drive element ( 2 ) or the output element ( 3 ).

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28-03-2013 дата публикации

Fluid-biased hydraulic control valve

Номер: US20130075639A1
Принадлежит: Eaton Corp

A hydraulic control valve is provided having a solenoid body, an energizable coil, and an armature positioned adjacent the coil. A valve stem extends from the armature. The coil is energizable to move the armature and the valve stem from a first position to a second position. The valve body, the armature and the valve stem are configured so that the armature and the valve stem are biased to the first position by pressurized fluid, allowing the armature to operate without a biasing spring.

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04-04-2013 дата публикации

Harmonic Drive Camshaft Phaser with a Harmonic Drive Ring to Prevent Ball Cage Deflection

Номер: US20130081587A1
Автор: PASCAL DAVID, Pierre Kimus
Принадлежит: Delphi Technologies Inc

A camshaft phaser includes a housing. A harmonic gear drive unit is disposed within the housing and includes a circular spline and a dynamic spline, a flexspline disposed within the circular spline and the dynamic spline, a wave generator disposed within the flexspline, and a rotational actuator connectable to the wave generator. A wave generator bearing includes an inner race with an inner race axial end, an outer race, a plurality of balls between the inner and outer races, and a ball cage. The ball cage includes an annular section disposed axial from the balls proximal to the inner race axial end and a plurality of ball separators such that consecutive balls are separated by one of the ball separators. A rigid support ring extends axially beyond the inner race axial end toward the annular section to limit axial distortion of the annular section.

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02-05-2013 дата публикации

Camshaft adjustment mechanism having a locking apparatus

Номер: US20130104822A1
Принадлежит: Schaeffler Technologies AG and Co KG

A camshaft adjustment mechanism is provided having a rotor adapted to be connected to a camshaft, a stator arranged around the rotor, and a cover associated with the stator. An advance chamber and a separate retard chamber are formed between the rotor and the stator and separated from each other by a vane extending from the rotor. The camshaft adjustment mechanism further includes a locking apparatus adapted to lock the rotor from rotation. A first oil control valve is associated with the advance chamber and the retard chamber to control oil flow to the advance chamber and the retard chamber. A second oil control valve is associated with the locking apparatus to control oil flow to the locking apparatus.

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25-07-2013 дата публикации

Constructed plastic rotor with integrated cartridge and spring suspension

Номер: US20130186356A1
Автор: Stefan Schelter
Принадлежит: Schaeffler Technologies AG and Co KG

A cover ( 4 ) for covering an axial side of a rotor core ( 6 ) that is arranged in a camshaft adjuster ( 50 ) and has a passage bore ( 28 ) for holding a locking pin ( 30 ) with which the rotor core ( 6 ) can be secured against rotation relative to a stator ( 54 ) of the camshaft adjuster ( 50 ). The specified cover includes a base body ( 8 ) for axially covering at least one area of the rotor core ( 6 ) with the passage bore ( 28 ) and a support element ( 38 ) that is arranged on the base body ( 8 ) for the axial counter support of the locking pin ( 30 ).

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08-08-2013 дата публикации

Configuration of a tank connection in a camshaft adjuster with volume accumulator

Номер: US20130199471A1
Принадлежит: Schaeffler Technologies AG and Co KG

A camshaft adjuster (b 4) for a camshaft ( 12 ) of an internal combustion engine ( 2 ). The camshaft adjuster ( 4 ) includes a stator ( 20 ), a rotor ( 22 ) housed concentrically in the stator ( 20 ) and mounted rotatably about a rotational axis ( 78 ) relative to the stator ( 20 ), and a volume accumulator ( 70 ) for receiving a hydraulic fluid from a pressure chamber ( 44 ) formed between the rotor ( 22 ) and the stator ( 20 ). The volume accumulator ( 70 ) has an outlet ( 76 ) in a direction of the rotational axis ( 78 ).

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08-08-2013 дата публикации

Non-return valve of a camshaft adjuster

Номер: US20130199474A1
Принадлежит: Schaeffler Technologies AG and Co KG

A camshaft adjuster with a drive element, a driven element, and a pressure chamber formed between the drive element and the driven element for generating a relative rotation between the driven element and the drive element, and a volume accumulator that is arranged in the camshaft adjuster and supplies hydraulic medium via a channel from the volume accumulator to the pressure chamber if there is an under-pressure in the pressure chamber. The camshaft adjuster has a non-return valve with a closing part for closing an opening of the channel, the non-return valve allows a flow of hydraulic medium through the channel from the volume accumulator to the pressure chamber, and there is an elastically expandable component that projects into the channel and can be guided by the channel and is connected to the closing part and is provided for applying tension for pulling the closing part into the channel.

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08-08-2013 дата публикации

Valve timing controller

Номер: US20130199478A1
Принадлежит: Denso Corp, Nippon Soken Inc

A valve timing controller includes a lock mechanism that locks a rotation phase at a main lock phase when an internal combustion engine is started with an ambient temperature more than or equal to a preset temperature. The main lock phase represents a rotation phase set for closing an intake valve at a later timing later than a timing when a piston reaches a bottom dead center of a cylinder in the internal combustion engine. The lock mechanism locks the rotation phase at a sub lock phase representing a rotation phase advanced rather than the main lock phase in the internal combustion engine when the internal combustion engine is started with an ambient temperature lower than the present temperature.

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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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12-09-2013 дата публикации

Valve timing controller

Номер: US20130233263A1
Автор: Soichi KINOUCHI
Принадлежит: Denso Corp

A valve timing controller includes a housing, a vane rotor, a bush fixed to the vane rotor so as to support the housing in a relatively rotatable state, a coil spring provided to the bush and a retainer contacting the coil spring at least one point in the cross-section perpendicular to a rotation axis direction. The coil spring has a first end engaged with the vane rotor and a second end engaged with the housing. The retainer retains an axis of the coil spring to be kept parallel with the rotation axis direction.

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26-09-2013 дата публикации

Camshaft adjuster

Номер: US20130247852A1
Принадлежит: Schaeffler Technologies AG and Co KG

A camshaft adjuster ( 1 ) is provided that has a drive element ( 2 ), a driven element ( 3 ), and at least one side cover ( 5 ). The side cover ( 5 ) has, for supporting a spring ( 4 ), several screw bosses ( 6 ) that are penetrated by screws ( 7 ) that are provided for a rotationally locked connection between the side cover ( 5 ) and the drive element ( 2 ) or the driven element ( 3 ).

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03-10-2013 дата публикации

Cam phaser

Номер: US20130255610A1
Автор: Jürgen Weber
Принадлежит: Schaeffler Technologies AG and Co KG

A cam phaser for transferring rotational energy from a crankshaft ( 16 ) to a camshaft ( 12 ) of an internal combustion engine ( 2 ), having a stator ( 20 ) for torque-proof connection to one of the shafts ( 12, 16 ) and a rotor ( 22 ) received rotationally in the stator ( 20 ) for torque-proof connection to the other shaft ( 12, 16 ), with first and second chambers being formed in the stator ( 20 ), engaged by first and second vanes ( 26 ) of the rotor ( 22 ). A bore ( 42 ) is provided in the first vane ( 26 ), in which a locking element ( 40 ) can be received for blocking a rotary motion of the rotor ( 22 ) relative to the stator ( 20 ). Here in an impact position of the second vane ( 26 ) at a wall ( 30 ) of the second chamber, the first vane ( 26 ) is arranged spaced apart from a wall ( 30 ) of the first chamber ( 44 ).

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10-10-2013 дата публикации

Camshaft adjuster having a restoring spring

Номер: US20130263805A1
Принадлежит: Schaeffler Technologies AG and Co KG

A configuration of a camshaft phaser ( 1 ) having a stator ( 2 ) and a rotor ( 3 ), the stator ( 2 ) and the rotor ( 3 ) being formed as sheet-metal parts and having integral shaped sheet-metal sections ( 12 ) for receiving a spring ( 4 ) and the spring ends ( 5, 6 ) thereof.

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02-01-2014 дата публикации

Method and system for pre-ignition control

Номер: US20140000557A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for reducing late burn induced cylinder pre-ignition events. Forced entry of residuals from a late burning cylinder into a neighboring cylinder may be detected based on engine block vibrations sensed in a window during an open exhaust valve of the late burning cylinder. In response to the entry of residuals, a pre-ignition mitigating action, such as fuel enrichment or deactivation, is performed in the neighboring cylinder.

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09-01-2014 дата публикации

Camshaft adjuster

Номер: US20140007827A1
Автор: Andreas Strauss
Принадлежит: Schaeffler Technologies AG and Co KG

An arrangement of a camshaft phaser ( 1 ) which has a drive element ( 2 ) and at least two driven elements ( 3, 4 ), whereby the camshaft phaser ( 1 ) has a first control valve ( 7 ) arranged concentrically to the camshaft phaser ( 1 ), and a second control valve ( 8 ) arranged off-centered with respect to the rotational axis ( 5 ) of the camshaft phaser ( 1 ).

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27-03-2014 дата публикации

Valve timing control apparatus of internal combustion engine

Номер: US20140083379A1
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

In a valve timing control apparatus employing two lock pins located in a vane rotor and two lock holes located in a sprocket so as to permit movement of the lock pins into and out of engagement with the respective holes, a guide mechanism is provided for guiding movement of the vane rotor relative to the sprocket toward a prescribed lock position. The guide mechanism includes a guide pin and a guide hole configured to permit movement of the guide pin into and out of engagement with the guide hole. Hydraulic pressure, used for retreating-movement of the lock pins out of engagement, is supplied through a first branch passage branching from an unlock passage configured to communicate with a pump discharge passage. Hydraulic pressure, used for retreating-movement of the guide pin out of engagement, is supplied through a second branch passage branching from the same unlock passage.

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10-04-2014 дата публикации

Approach for controlling operation of oil injectors

Номер: US20140100765A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Various embodiments of systems and methods related to controlling oil injection for piston cooling in an engine are disclosed. In one embodiment, a method includes during an engine cold start event, enabling oil injection onto a piston of an engine, disabling oil injection after the engine cold start event, and re-enabling oil injection after the engine cold start event based on a first operating parameter.

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01-01-2015 дата публикации

DUAL INDEPENDENT PHASING SYSTEM WITH SEPARATE OIL FEEDS

Номер: US20150000623A1
Принадлежит:

A phasing system, including: a first phaser section including a first stator non-rotatably connected to a drive sprocket and first chambers formed by a first rotor and the first stator; a second phaser section located in a first axial direction from the first phaser section and including a second stator non-rotatably connected to the drive sprocket and second chambers formed by a second rotor and the second stator; a first portion of a camshaft non-rotatably connected to the first rotor, extending past the first stator in a second axial direction, and including first channels arranged to supply fluid to the first chambers; and a second portion of the camshaft non-rotatably connected to the first portion of the camshaft and extending past the second stator in the first axial direction and including second channels arranged to provide fluid to the second chambers. 1. A dual independent phasing system , comprising:a drive sprocket arranged to receive torque; a first stator non-rotatably connected to the drive sprocket; and,', 'a first plurality of chambers formed by a first rotor and the first stator;, 'a first phaser section including a second stator non-rotatably connected to the drive sprocket; and,', 'a second plurality of chambers formed by a second rotor and the second stator;, 'a second phaser section, located in a first axial direction from the first phaser section, and including non-rotatably connected to the first rotor and extending past the first stator in a second axial direction, opposite the first axial direction; and,', 'including a first plurality of channels arranged to supply fluid to the first plurality of chambers; and,, 'a first portion of a first camshaft non-rotatably connected to the first portion of the first camshaft and extending past the second stator in the first axial direction; and,', 'including a second plurality of channels arranged to provide fluid to the second plurality of chambers, wherein:, 'a second portion of the first ...

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05-01-2017 дата публикации

ROTOR ASSEMBLY WITH INNER DIAMETER DIVIDER PATTERN

Номер: US20170002696A1
Автор: McCloy Chad
Принадлежит:

A phaser with a rotor assembly having a pattern on an inner diameter that acts as a sealing land or divider between the advance supply port and the retard supply port. This pattern allows the advance supply ports and the retard supply ports to be on the same plane, allowing the overall axial length of the rotor to be shorter. The pattern is preferably formed onto the inner diameter of the rotor through net forming. 1. A rotor assembly of a variable cam timing phaser comprising:an outer diameter with vanes extending therefrom; anda bore having an inner diameter comprising a plurality of passages extending from the inner diameter of the bore to the outer diameter of the rotor assembly, each of the passages having a first port on the inner diameter and a second port on the outer diameter of the rotor assembly; and a pattern of pockets surrounding each of the first ports on the inner diameter of the bore, the pattern comprising a plurality of lands enclosing each of the first ports on at least three sides, such that the first ports are on a same plane of the rotor assembly and the lands form a continuous circumferential seal groove, sealing each of the first ports from other first ports.2. The rotor assembly of claim 1 , wherein the pocket is formed by a first land on a first side claim 1 , a second land on a second side claim 1 , opposite the first side claim 1 , and a third land connecting the first land and the second land along an outer perimeter of the bore.3. The rotor assembly of claim 1 , wherein the pattern of pockets extends around an entire circumference of the inner diameter of the bore of the rotor assembly.4. A variable cam timing phaser comprising:a housing assembly having an outer circumference for accepting drive force;a rotor assembly for connection to a camshaft received within the housing assembly, the rotor assembly comprising: an outer diameter with a plurality of vanes extending therefrom coaxially located within the housing assembly; wherein the ...

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05-01-2017 дата публикации

CAMSHAFT ADJUSTING DEVICE, COMBUSTION ENGINE AND ASSEMBLY METHOD

Номер: US20170002700A1
Принадлежит: ETO MAGNETIC GMBH

A camshaft adjustment device comprising an electromagnetic actuator () having an armature that can be adjusted axially along an adjustment axis () for actuating a hydraulic valve for camshaft adjustment, and fastening means for fastening the actuator () on an engine element (), wherein the fastening means comprise spring means (), which tension the actuator () against the engine element () in a securing position (), wherein the fastening means have positive-fitting means () as an anti-twist device for preventing a twisting movement of the actuator () in an installation position () relatively to the engine element (), which are constructed and arranged in such a manner that the actuator () can be moved to the engine element () by means of a pure translational installation movement and wherein the spring means () in the securing position () bar a de-installation path for a purely translational de-installation movement of the actuator () opposite to the installation movement in such a manner that the same cannot be de-installed oppositely to the purely translational installation direction. 23. The camshaft adjustment device according to claim 1 , wherein actuator () is axially guided during its translational installation movement.3811537151625558115715163555. The camshaft adjustment device according to claim 1 , wherein the positive-fitting means () have at least one positive-fitting element () extending parallel to the adjustment axis () on the actuator () claim 1 , which is accommodated in the installation position () in each case by two counterpart elements ( claim 1 , ) or counterpart element sections of the engine element () that are spaced around the adjustment axis () in a circumferential direction and extend parallel to the adjustment axis () claim 1 , which counterpart elements or counterpart element sections delimit an installation opening extending parallel to the adjustment axis () and/or wherein the positive-fitting means () have at least one positive- ...

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05-01-2017 дата публикации

VALVE OPENING AND CLOSING TIMING CONTROL DEVICE

Номер: US20170002749A1
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A valve opening and closing timing control device includes: a driving-side rotating body synchronously rotated with a crankshaft of an engine and having a lid member fixed in a direction of the rotational axis; a driven-side rotating body integrally rotated with a camshaft for opening and closing a valve on the same rotational axis; a lock mechanism having a lock member moving in the direction and a lock recessed portion formed inside the lid member and into which the lock member is able to be fitted; and a torsion spring disposed outside the lid member and exerting a biasing force to the driving-side and driven-side rotating bodies, wherein a restricting projection portion for restricting a movement of the torsion spring in the direction is formed in the lid member. 1. A valve opening and closing timing control device comprising:a driving-side rotating body that is synchronously rotated with a crankshaft of an internal combustion engine and has a lid member fixed in a direction of the rotational axis;a driven-side rotating body that is integrally rotated with a camshaft for opening and closing a valve on the same rotational axis;a lock mechanism that has a lock member moving in the direction of the rotational axis and a lock recessed portion which is formed inside the lid member and into which the lock member is able to be fitted; anda torsion spring that is disposed outside the lid member and exerts a biasing force to the driving-side rotating body and the driven-side rotating body,wherein a restricting projection portion for restricting a movement of the torsion spring in the direction of the rotational axis is formed to protrude from a side opposite to the lock recessed portion in the lid member.2. The valve opening and closing timing control device according to claim 1 ,wherein the restricting projection portion is provided in a portion that is positioned on the side opposite to the lock recessed portion in the lid member.3. The valve opening and closing timing ...

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07-01-2016 дата публикации

METHOD AND APPARATUS FOR CONTROLLING CVVT ENGINE OF INTERMEDIATE PHASE

Номер: US20160003109A1
Автор: KIM Hyun
Принадлежит:

A method and an apparatus for controlling a CVVT engine of an intermediate phase may include amending a fixed PWM frequency that is applied to a plunger when a temperature of oil passing through oil fluid passages is a set value or less by a controller so that a stroke value of the plunger can be increased. 1. A method of controlling a CVVT engine of an intermediate phase , comprising amending a fixed PWM frequency that is applied to a plunger when a temperature of oil passing through oil fluid passages is a set value or less by a controller so that a stroke value of the plunger can be increased.2. The method of controlling the CVVT engine of the intermediate phase of claim 1 , wherein the fixed PMW frequency is amended by reflecting a compensation frequency set depending on temperature to the fixed PMW frequency that is applied to the plunger.3. The method of controlling the CVVT engine of the intermediate phase of claim 2 , wherein a final frequency that is applied to the plunger is smaller than the fixed PMW frequency.4. The method of controlling the CVVT engine of the intermediate phase of claim 3 , further comprising:applying a fixed PWM frequency;comparing temperature of the engine to a set temperature value; andapplying an amended frequency to the plunger by reflecting a compensation frequency having different values depending on temperature to the fixed PMW frequency when the temperature of the engine is a set temperature value or less.5. The method of controlling the CVVT engine of the intermediate phase of claim 4 , wherein the temperature of the engine is reflected by measuring any one or more of temperature of cooling water or intake air.6. The method of controlling the CVVT engine of the intermediate phase of claim 5 , wherein when the temperature of the engine exceeds the set temperature value claim 5 , only a fixed PWM frequency except for the compensation frequency is applied to the plunger.7. An apparatus for controlling a CVVT engine of an ...

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04-01-2018 дата публикации

CONTROL VALVE HAVING AN OUTFLOW CHANNEL

Номер: US20180003090A1
Автор: Hoppe Jens, KOEHLER David
Принадлежит:

A control valve () for a camshaft adjustment device, and to an internal combustion engine having a camshaft adjustment device and a control valve () is provided. The control valve () includes a valve housing () and a pressure medium guiding insert () arranged coaxially in a recess of the valve housing (). A discharge passage () of the pressure medium guiding insert () transitions into a discharge duct () running in the axial direction, wherein the discharge connection T can be connected to the control connection A, B and wherein the discharge connection T is arranged in a region between the second end (), which is opposite the first end (), and the control connections A, B. 110-. (canceled)11: A control valve for a camshaft adjustment device , comprising:a valve housing including an inflow connection P, two control connections A and B, and an outflow connection T;a pressure medium-conducting insert, coaxially situated in a receptacle of the valve housing, the insert having an inflow passage, an outflow passage, and two control passages; anda control piston coaxially guided in the pressure medium-conducting insert and having an inflow groove, an outflow groove, and a control groove on an outer circumference, the control piston including a piston head forming an actuating surface on a front side and defining a first end of the control valve on an actuation side,the outflow passage merging into an outflow channel extending in an axial direction, at least one of the two control connections A, B connectable with the outflow connection T via the outflow channel, and the outflow connection T being situated in an area between a second end of the control valve, opposite from the first end, and the two control connections A, B.12: The control valve as recited in wherein the outflow channel is at least partially enclosed by the pressure medium-conducting insert claim 11 , external dimensions of the pressure medium-conducting insert being adapted to internal dimensions of the ...

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03-01-2019 дата публикации

ONE-WAY CLUTCH TYPE VARIABLE VALVE TIMING DEVICE AND ENGINE SYSTEM HAVING THE SAME

Номер: US20190003346A1
Автор: KIM Won-Gyu
Принадлежит:

A variable valve timing device applied to an engine system may include a rotor supplied with oil and rotated in clockwise and counterclockwise directions, one-way clutches coupled to the rotor to limit an amount of rotation of the rotor, a sprocket having a rotor hole surrounding an external diameter portion of the rotor, a rotation shaft fitted into a shaft hole of the rotor for the supply of oil to oil grooves, and a shaft fixing member coupled to the rotation shaft to fix the rotor and the rotation shaft, wherein the one-way clutches restrict clockwise/counterclockwise rotation of the rotor by torque of a camshaft, achieving an improvement in fuel efficiency/emission material (EM) of an engine. 1. A variable valve timing device comprising:a rotor device including a rotor rotatable in clockwise or counterclockwise direction with a supply of oil thereto, and a one-way clutch coupled to the rotor to limit an amount of rotation of the rotor.2. The variable valve timing device of claim 1 , wherein the one-way clutch includes a carrier surrounding an external peripheral surface of the rotor to form first and second chambers filled with the oil while a position of the carrier is controlled claim 1 , a ball disposed in a ball slot of the carrier to come into contact with the external peripheral surface of the rotor claim 1 , a stopper carrier protruding from the carrier to limit the amount of rotation of the rotor claim 1 , and an elastic member supported by a vane fixed on the external peripheral surface of the rotor.3. The variable valve timing device of claim 2 , wherein the rotor has a rotor body having a shaft hole formed in a center thereof claim 2 , the carrier surrounds an external diameter portion of the rotor body claim 2 , the ball contacts with an external peripheral surface of the rotor body claim 2 , and the vane is fixed on the external peripheral surface of the rotor body.4. The variable valve timing device of claim 3 , wherein the rotor body has a ...

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03-01-2019 дата публикации

CAMSHAFT DRIVEN PUMP FOR A HYDRAULIC CAM PHASER

Номер: US20190003347A1
Автор: Wigsten Mark M.
Принадлежит:

A mechanism provides high pressure fluid to a cam phaser on demand. The mechanism includes a positive displacement pump within the camshaft which is driven by a pin to compress and trigger fluid to be dispensed to the phaser. 1. A variable cam timing system for an internal combustion engine comprising:a hollow camshaft having an end coupled to a phaser, an inner circumference and an outer circumference, the inner circumference defining a volume of fluid;an axially moveable shift collar received on the outer circumference of the camshaft, connected to the camshaft through a connecting pin, the shift collar having at least one helical track for receiving a driven pin, the shift collar being axially moveable through the driven pin; anda hydraulic pump within the inner circumference of hollow camshaft moveable through the shift collar for compressing the volume of fluid in the camshaft;wherein axial movement of the shift collar moves the hydraulic pump to compress the volume of fluid in the camshaft and force the volume of fluid within the camshaft to flow to the phaser.2. The variable cam timing system of claim 1 , further comprising a pressure relief mechanism for releasing pressure within the volume of fluid in the camshaft.3. The variable cam timing system of claim 1 , wherein the fluid sent to the phaser at a compressed pressure is sent at engine startup.4. The variable cam timing system of claim 1 , wherein the fluid is sent to the phaser at a compressed pressure at a time other than engine startup.5. The variable cam timing system of claim 1 , wherein the phaser further comprises a lock pin received within the phaser having a locked position in which a housing of the phaser is locked relative to a rotor assembly of the phaser and an unlocked position.6. The variable cam timing system of claim 5 , wherein the fluid is sent to the phaser at a compressed pressure to move the lock pin from a locked position to an unlocked position.7. The variable cam timing system of ...

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03-01-2019 дата публикации

VARIABLE CAMSHAFT TIMING DEVICE WITH TWO LOCKING POSITIONS

Номер: US20190003348A1
Автор: SMITH Franklin R.
Принадлежит:

A system including a phaser with a first lock pin and a second lock pin in the rotor assembly. The first and second locks pins having a locked position where they engage a recess in the housing assembly and an unlocked position in which they do not engage the housing assembly. The first lock pin locks the rotor assembly to the housing assembly when the phaser is in or near an intermediate phase angle position. The second lock pin locks the rotor assembly to the housing assembly when the phaser is at a full retard position. Alternatively, the second lock pin can lock the rotor assembly to the housing assembly when the phaser is at a full advance position. The second lock pin is spring biased towards the unlocked position and is pressurized to engage and move to the locked position by either the advance or the retard chamber. 1. A variable cam timing system including a phaser for an internal combustion engine including a housing assembly with an outer circumference for accepting drive force and a rotor assembly coaxially located within the housing assembly for connection to a camshaft , having a plurality of vanes , wherein the housing assembly and the rotor assembly define at least one chamber separated by a vane into an advance chamber with an advance wall and a retard chamber with a retard wall , the vane within the chamber acting to shift relative angular position of the housing assembly and the rotor assembly when fluid is supplied to the advance chamber or the retard chamber , the system comprising:a control valve for directing fluid from a fluid input to and from the advance chamber and the retard chamber through an advance line, a retard line, a supply line coupled to the fluid input, and an exhaust line;the control valve being movable to an oil pressure actuated mode comprising: an advance mode in which fluid is routed from the fluid input to the advance chamber and fluid is routed from the retard chamber to the exhaust line, a retard mode in which fluid is ...

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03-01-2019 дата публикации

INTERNAL-COMBUSTION ENGINE VALVE TIMING CONTROL DEVICE

Номер: US20190003349A1
Автор: WATANABE Kotaro
Принадлежит: Hitachi Automotive Systems, Ltd.

A valve timing control device includes: a gear part whose proximal end portion is formed integrally with an outer peripheral surface of a housing body, and around which a timing chain is wound for crankshaft torque transmission; and a vane member fixed to one end portion of a camshaft and is configured to rotate relatively inside the housing body, and including vanes on an outer periphery of a rotor, wherein the vanes define a retard oil chamber and an advance oil chamber. A raised portion is formed in which an outer surface between the outer peripheral surface of the housing body and one side surface of the proximal end portion of the gear part facing a front plate is inclined downward toward the front plate. 1. An internal combustion engine valve timing control device comprising:a housing body having a cylindrical tubular shape, and including a plurality of shoes, wherein the shoes project from an inner peripheral side of the housing body;a plurality of gear parts, wherein each of the gear parts includes a proximal end portion formed integrally with an outer peripheral surface of the housing body, and wherein a transmission member is wound around the gear parts for crankshaft torque transmission;a vane member configured to be fixed to a first axial end portion of a camshaft, and mounted rotatably in the housing body, wherein the vane member includes a plurality of vanes, and wherein each of the vanes is configured to separate a space between corresponding adjacent two of the shoes into a retard hydraulic chamber and an advance hydraulic chamber;a rear plate enclosing a first axial end opening of the housing body, wherein the first axial end opening faces the camshaft;a front plate enclosing a second axial end opening of the housing body, wherein the second axial end opening is opposite to the first axial end opening, and farther from the camshaft than the first axial end opening; anda raised portion formed at least between the outer peripheral surface of the ...

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13-01-2022 дата публикации

HYDRAULIC OIL CONTROL VALVE AND VALVE TIMING ADJUSTMENT DEVICE

Номер: US20220010694A1
Автор: KAWAMURA Futoshi
Принадлежит:

A hydraulic oil control valve is coaxially disposed with a rotational axis of a valve timing adjustment device. The hydraulic oil control valve includes a sleeve and a spool that is slidably moved in an axial direction within the sleeve in a radial direction. The sleeve includes an inner sleeve disposed radially outside of the spool and an outer sleeve defining an axial hole extending in the axial direction. The inner sleeve is inserted into the axial hole. The outer sleeve is fixed to an end portion of one shaft when an axial force is applied to the outer sleeve in the axial direction. An inner sleeve end portion of the inner sleeve in the axial direction away from the actuator protrudes from the outer sleeve away from the actuator in the axial direction. 1. A hydraulic oil control valve for a valve timing adjustment device , the valve timing adjustment device being configured to adjust valve timing of a valve and fixed to an end portion of one shaft that is a drive shaft or a driven shaft , the driven shaft being configured to selectively open and close the valve with a driving force transmitted from the drive shaft , the hydraulic oil control valve being coaxially disposed with a rotational axis of the valve timing adjustment device and configured to control a flow of a hydraulic oil supplied from a hydraulic oil supply source , the hydraulic oil control valve comprising:a tubular sleeve;a spool that has an end portion in contact with an actuator and that is slidably moved by the actuator in an axial direction within the sleeve in a radial direction, wherein an inner sleeve disposed outside of the spool in the radial direction; and', 'an outer sleeve defining therein an axial hole extending in the axial direction, the inner sleeve being inserted into the axial hole,, 'the sleeve includesthe outer sleeve is configured to be fixable to the end portion of the one shaft by an axial force applied to the outer sleeve in the axial direction,the inner sleeve has an inner ...

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13-01-2022 дата публикации

VALVE TIMING ADJUSTMENT DEVICE

Номер: US20220010698A1
Автор: KAWAMURA Futoshi
Принадлежит:

A valve timing adjustment device includes a vane rotor and a hydraulic oil control valve. The vane rotor is fixed to an end portion of one of a drive shaft and a driven shaft and defines a through hole. The hydraulic oil control valve includes a sleeve and a spool. The sleeve includes a body portion in the through hole and a fixing portion fixed into a shaft fixing hole defined in the one. At least a portion of the through hole is sealed by the body portion. A difference between a radial dimension of the shaft fixing hole and a radial dimension of the fixing portion is greater than a total of a predetermined coaxiality between the through hole and the shaft fixing portion and a predetermined coaxiality between the body portion and the fixing portion. 1. A valve timing adjustment device configured to adjust valve timing of a valve in an internal combustion engine , the valve being configured to be selectively opened and closed by a driven shaft to which a driving force is transmitted from a drive shaft , the valve timing adjustment device comprising:a vane rotor that is fixed to an end portion of one of the drive shaft and the driven shaft, that is configured to rotate together with the one of the drive shaft and the driven shaft, and that is configured to alter a phase of the one of the drive shaft and the driven shaft relative to another of the drive shaft and the driven shaft according to a pressure of a hydraulic oil supplied from a hydraulic oil supply source, the vane rotor defining a through hole passing through the vane rotor in an axial direction; a tubular sleeve that includes a body portion disposed in the through hole and a fixing portion inserted and fixed into a shaft fixing hole, the shaft fixing hole being defined in the end portion of the one of the drive shaft and the driven shaft; and', 'a spool that is configured to slidably move in the axial direction within the sleeve, wherein, 'a hydraulic oil control valve that is configured to perform a flow ...

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08-01-2015 дата публикации

VALVE CONTROL APPARATUS

Номер: US20150007788A1
Принадлежит:

A forward phase adjustment unit adjusting a forward phase of a forward intermediate rotor relative to a crank shaft includes a forward stopper mechanism and a forward locking mechanism and a forward biasing mechanism. The forward stopper mechanism prevents further advance of the forward phase by engaging the forward intermediate rotor at a forward most-advanced phase. The forward locking mechanism locks the forward phase when reaching the forward most-advanced phase at a start time of the engine. The forward biasing member biases the forward intermediate rotor in an advance direction. A backward phase adjustment unit adjusts the backward phase of the intake cam shaft relative to a backward intermediate rotor by receiving a cam torque that is biased on average in a retard direction. The backward phase adjustment unit includes a backward stopper mechanism and a backward locking mechanism. The backward stopper mechanism prevents further retard of the backward phase by engaging the intake cam shaft at a backward most-retarded phase. The backward locking mechanism locks the backward phase when reaching the backward most-retarded phase at the start time of the engine. 1. A valve control apparatus for adjusting valve timing of an internal combustion engine , the engine having an intake valve that is opened and closed by a rotation of an intake cam shaft , and an exhaust valve that is opened and closed by a rotation of an exhaust cam shaft that receives a crank torque from a crank shaft , the valve control apparatus comprising:a forward phase adjustment unit that has a forward intermediate rotor rotatable relative to the exhaust cam shaft, the forward phase adjustment unit adjusting a forward phase that is a rotational phase of the forward intermediate rotor relative to the crank shaft; anda backward phase adjustment unit that has a backward intermediate rotor rotatable relative to the intake cam shaft and rotating in association with the forward intermediate rotor, the ...

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12-01-2017 дата публикации

VALVE OPENING/CLOSING TIMING CONTROL DEVICE

Номер: US20170009614A1
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

Provided is a valve opening/closing timing control device that can speedily achieve a stable operation at the time of starting an engine. The device includes a drive-side rotating body that is rotated in synchronism with a crankshaft and has a plurality of projecting portions, a driven-side rotating body that has a partition portion which forms an advance angle chamber and a retard angle chamber and that is rotated together with a camshaft for valve opening/closing, an intermediate lock mechanism switchable between a locked state and an unlocked state, a pump for supplying fluid to the advance angle chamber, the retard angle chamber or the intermediate lock mechanism, and a communication passage configured to establish communication between the advance angle chamber and the retard angle chamber disposed adjacent in a circumferential direction when the intermediate lock mechanism is under the locked state. 16-. (canceled)7. A valve opening/closing timing control device comprising:a drive-side rotating body rotatable in synchronism with a crankshaft of an internal combustion engine, the drive-side rotating body having a plurality of projecting portions that project from a radial outer side to a radial inner side toward a rotational axis;a driven-side rotating body surrounded by the drive-side rotating body and having a partition portion extending toward the radial outer side at a position between the adjacent projecting portions, thus forming an advance angle chamber and a retard angle chamber between the drive-side rotating body and the drive-side rotating body, the driven-side rotating body being rotatable together with a valve opening/closing camshaft;an intermediate lock mechanism switchable between a locked state in which a relative rotational phase of the driven-side rotating body relative to the drive-side rotating body is restrained to an intermediate lock phase between a most advanced angle phase and a most retarded angle phase and an unlocked state in which ...

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12-01-2017 дата публикации

CAMSHAFT ADJUSTER

Номер: US20170009615A1
Автор: Brenner Holger
Принадлежит:

A camshaft adjuster including a stator and a rotor, wherein the stator and the rotor are arranged such as to be able to rotate relative to one another, the camshaft adjuster has a cover which is connected to the stator or to the rotor such as to rotate therewith, and wherein the stator an/or the rotor and/or the cover has a through-opening which is at least partially penetrated by a screw, wherein the camshaft adjuster has a threaded bushing which is inserted in the through-opening and which includes a tubular piece having an internal screw thread and a radial collar arranged at one end of the tubular piece, wherein the screw engages in the threaded bushing, the threaded bushing has a bearing face which is arranged in the transition from the radial collar to the tubular piece and which is oriented at an angle to a longitudinal axis of the tubular piece, and the threaded bushing bears with the bearing face against a correspondingly shaped counterface of the stator an/or of the rotor and/or of the cover. 19-. (canceled)10. A camshaft adjuster comprising:a stator and a rotor rotatably situated relative to each other;a cover rotatably fixedly connected to the stator or the rotor; andthe stator or the rotor or the cover having a through-opening at least partially penetrated by a screw; anda threaded bushing inserted into the through-opening and including a tube piece having a female thread and a radial collar situated on one end of the tube piece, the screw engaging with the threaded bushing; the threaded bushing having a contact surface situated in a transition between the radial collar and the tube piece and obliquely oriented with respect to a longitudinal axis of the tube piece, the threaded bushing abutting a correspondingly shaped mating surface of the stator or the rotor or the cover via the contact surface.11. The camshaft adjuster as recited in wherein the radial collar is countersunk in the through-opening.12. The camshaft adjuster as recited in wherein the ...

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12-01-2017 дата публикации

MODULARIZED MULTIFUNCTIONAL VARIABLE VALVE ACTUATION SYSTEM FOR USE IN 6-CYLINDER INTERNAL COMBUSTION ENGINE

Номер: US20170009618A1
Принадлежит:

A modularized multifunctional variable valve actuation system for use in a six-cylinder internal combustion engine. The system mainly comprises fuel supply modules ( and ), a phase limiting module (), a mode selection module (), control modules ( and ), a fuel transfer module (), and a valve actuation module (). The phase limiting module (), with an extremely simple structure, implements a valve closing process not limited by operational phases of the fuel supply modules ( and ), and at the same time, requires only two fuel supply modules ( and ) and two two-way two-position valves (, and ) to implement a continuously variable valve event, and requires only two fuel supply modules ( and ), two three-way two-position valves (, and ), and one two-way two-position valve (, and ) to implement a fully variable valve event, thus greatly reducing costs. The mode selection module () implements flexible conversion of an actuation mode and a braking mode of an internal combustion engine. Components of the system are functionally independent, modules are selected on the basis of requirements such as a gas distribution mode, the flexibility of valve operations, and the presence or absence of the braking mode, and the need for altering other modules is obviated. Thus, the system has a great suitability and a wide range of applications. 2. The system of claim 1 , wherein{'b': 3', '3', '3', '3', '3', '2', '22', '22', '3', '2', '22', '22', '3', '2', '22', '22, 'i': k', 'm', 'n', 'k', 'e', 'a', 'g', 'm', 'g', 'c', 'i', 'n', 'i', 'e', 'k, 'for the fully variable valve actuation system of the continuously variable or independent oil drain valve on the valve side, the first control module () further comprises a fifth drive port of the first control module (), a sixth drive port of the first control module () and a seventh drive port of the first control module (); the fifth drive port of the first control module () is connected to the oil path between the first oil drain port of the ...

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14-01-2016 дата публикации

MID LOCK DIRECTIONAL SUPPLY AND CAM TORSIONAL RECIRCULATION

Номер: US20160010515A1
Принадлежит:

A valve timing control device, in effect a cam phaser, for an internal combustion engine. The valve timing control device includes a rotor connected to a camshaft and having a plurality of vanes. A stator is engaged with the rotor, and includes a plurality of webs. Pressure chambers are provided between each of the webs and vanes. The cam phaser is configured to automatically locate to its mid-lock position, without having to rely on electronic control. At least one embodiment of the present invention is configured to use cam torque to recirculate oil from one side of the vanes of the rotor to the other. 1. A valve timing control device for an internal combustion engine , said valve timing control device comprising:a rotor comprising a plurality of vanes;a stator engaged with the rotor, said stator comprising a plurality of webs, wherein advancement and retard chambers are provided between each of the webs and vanes;a lock pin which locks the rotator relative to the stator at a mid-lock position;an oil control valve in fluid communication with the rotor, further comprising a centering slot and a directional supply port, wherein either the advancement or the retard chamber vents oil into the oil control valve through the centering slot, during which time the oil control valve supplies oil to the other chamber through the directional supply port, thereby locating the rotor to its mid-lock position so the lock pin can lock the rotor relative to the stator.2. The valve timing control device as recited in claim 1 , further comprising a supply valve in the rotor claim 1 , said supply valve configured to supply oil from the oil control valve to the directional supply port.3. The valve timing control device as recited in claim 1 , wherein the valve timing control device is configured to recirculate oil from either the advancement or the retard chamber to the directional supply port via the oil control valve.4. The valve timing control device as recited in claim 3 , wherein ...

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14-01-2021 дата публикации

ACTUATOR FOR HYDRAULIC VALVE

Номер: US20210010396A1
Автор: Schatz Bernhard
Принадлежит:

An actuator for a hydraulic valve for a cam phaser, the actuator comprising a magnetisable actuator housing that envelops a magnet coil; a pole group that is arranged in a housing receiver opening of the magnetisable actuator housing, wherein the pole group includes a pole core and a pole tube, wherein the pole core and the pole tube are connected by a connection bar and the pole core is connected with the connection bar by a pole core cone, or the pole tube is connected with the connection bar by a pole tube cone, wherein an armature is received axially movable in an inner space of the pole group.

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10-01-2019 дата публикации

Engine variable camshaft timing phaser with planetary gear assembly

Номер: US20190010837A1
Принадлежит: BorgWarner Inc

An engine variable camshaft timing phaser (10) includes a sprocket (12) and a planetary gear assembly (14). The sprocket (12) receives rotational drive input from an engine crankshaft. The planetary gear assembly (14) includes two or more ring gears (26, 28), multiple planet gears (24), a sun gear (22), and a wrap spring (76). One of the ring gears (26, 28) receives rotational drive input from the sprocket (12) and one of the ring gears (26, 28) transmits rotational drive output to an engine camshaft. The sun gear (22) engages with the planet gears (24). The wrap spring (76) experiences expansion and contraction exertions to permit advancing and retarding engine valve opening and closing, and to prevent advancing and retarding engine valve opening and closing.

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10-01-2019 дата публикации

VALVE TIMING CONTROL SYSTEM AND CONTROL COMMAND UNIT

Номер: US20190010838A1
Автор: AOYAMA Koichi
Принадлежит:

In a valve timing control system, a control command unit includes: a first stage setting block and a next stage setting block. The first stage setting block sets a retard holding command value as a control command value to introduce hydraulic fluid to each retard operation chamber under a state where a rotation phase is locked, to start applying an operation pressure more than or equal to an unlock pressure to a lock component. The next stage setting block sets an advance holding command value as a control command value to introduce hydraulic fluid to each advance operation chamber, after setting the retard holding command value, to maintain the applying of the operation pressure more than or equal to the unlock pressure to the lock component. 1. A valve timing control system that variably controls valve timing of a valve opened and closed by a camshaft by a torque transfer from a crankshaft in an internal-combustion engine , in response to a rotation phase of the camshaft to the crankshaft , the valve timing control system comprising:a phase adjustment unit including a first operation chamber and a second operation chamber between rotors respectively rotating with the crankshaft and the camshaft, the phase adjustment unit adjusting the rotation phase by a flow in/out of hydraulic fluid to the first operation chamber and the second operation chamber, a generating direction of a torque for changing the rotation phase in response to introduction of hydraulic fluid being opposite between the first operation chamber and the second operation chamber;a lock unit having a lock component between the rotors, an operation pressure being applied to the lock component from an unlock chamber, the hydraulic fluid flowing in/out the unlock chamber through the first operation chamber, the lock unit unlocking the rotation phase when the operation pressure more than or equal to the unlock pressure is applied to the lock component under a state where the rotation phase is locked by ...

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09-01-2020 дата публикации

VALVE OPENING-CLOSING TIMING CONTROL DEVICE

Номер: US20200011214A1
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A valve opening-closing timing control device includes a valve case in which an inner space is formed in a direction along a rotational axis, and a valve unit accommodated in the inner space so as to be coaxial with the rotation axis and controlling fluid to and from an advance chamber and a retard chamber. The valve unit includes a check valve on an upstream side to which fluid is supplied. The check valve includes a valve seat in which a flow passage hole through which the fluid flows is formed, and a valve body including a closing portion that can close the flow passage hole. The valve seat includes a first projection portion to surround the flow passage hole. The check valve is closed by the closing portion contacting against the first projection portion, and is opened by the closing portion being separated from the first projection portion. 1. A valve opening-closing timing control device comprising:a drive-side rotational body rotating in synchronization with a crankshaft of an internal combustion engine;a driven-side rotational body being arranged coaxially with a rotational axis of the drive-side rotational body and rotating integrally with a valve opening-closing camshaft;an advance chamber and a retard chamber formed between the drive-side rotational body and the driven-side rotational body;a valve case in which an inner space is formed in a direction along the rotational axis so as to range from an outside to the camshaft; anda valve unit being accommodated in the inner space so as to be coaxial with the rotation axis and controlling supply and discharge of fluid to and from the advance chamber and the retard chamber, whereinthe valve unit includes a check valve on an upstream side to which the fluid is supplied,the check valve includes a valve seat in which a flow passage hole through which the fluid flows is formed, and a valve body including a closing portion that can close the flow passage hole,the valve seat includes a first projection portion that ...

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09-01-2020 дата публикации

DOUBLE FLAPPER VALVE FOR A VARIABLE CAM TIMING SYSTEM

Номер: US20200011215A1
Принадлежит:

An inlet check valve for controlling fluid from a supply into a variable cam timing phaser includes a double flapper check valve assembly with an open position and a closed position, which includes a housing having a body, at least one stopper, a flapper valve comprising at least two flexible flaps received within the housing and aligned with the stopper(s), and a valve seat received within the housing, the valve seat defining openings aligned with the at least two flexible flaps, axially opposite the two stoppers. 1. A check valve for controlling fluid within or into a variable cam timing phaser , comprising: a housing having a body forming at least one stopper;', 'a flapper valve comprising at least two flexible flaps received within the housing and aligned with the stopper(s); and', 'a valve seat received within the housing, the valve seat defining openings aligned with the at least two flexible flaps, axially opposite the stopper(s);', 'wherein when fluid flows through the openings of the valve seat, the fluid pushes the at least two flaps away from the valve seat and towards the stopper(s), permitting the flow of fluid into the variable cam timing phaser; and', 'wherein when fluid flows from the body onto the at least two flaps, the fluid pushes the at least two flaps towards the valve seat, sealing the openings of the valve seat and preventing fluid from entering the supply., 'a double flapper check valve assembly with an open position and a closed position, the double flapper check valve comprising2. The check valve of claim 1 , wherein the stopper(s) is/are shaped to limit the movement of the at least two flexible flaps.3. The check valve of claim 1 , the housing further comprising a lip defining a protrusion for securing the valve seat and flapper valve to the housing.4. The check valve of claim 1 , wherein the housing is manufactured by an overmolding process.5. The check valve of claim 1 , wherein the double flapper check valve assembly further comprises ...

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19-01-2017 дата публикации

SYSTEM FOR CONTROLLING VALVE OPENING/CLOSING TIMING

Номер: US20170016359A1
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A system for controlling valve opening/closing timing that allows an unlocking operation to be reliably performed is configured. When extracting a lock member from a recess, a second control valve is set to an unlock position, a first control valve is set to a predetermined position, and a relative rotation phase is displaced. As a result, the relative rotation phase is displaced in a direction opposite to the direction of displacement by cam average torque from a camshaft. Afterward, by setting the first control valve to a neutral position, the relative rotation phase is displaced by the cam average torque, and when this displacement occurs, a state in which the lock member is separated from an inner wall of the recess is created, thus facilitating extraction of the lock member from the recess. 1. A system for controlling valve opening/closing timing , comprising:a valve opening/closing timing control device having:a drive-side rotary body that rotates synchronously with a crankshaft of an internal combustion engine;a driven-side rotary body that is contained within the drive-side rotary body, and rotates in unity and coaxially with a camshaft for valve opening/closing; anda lock mechanism that includes a lock member supported slidably in a guide hole of one of the drive-side rotary body and the driven-side rotary body, a recess formed in the other of the drive-side rotary body and the driven-side rotary body, and a biasing member that biases the lock member, the lock mechanism maintaining the drive-side rotary body and the driven-side rotary body in a lock position where the drive-side rotary body and the driven-side rotary body are held at a predetermined relative rotation phase by the lock member engaging in the recess due to biasing force of the biasing member; anda control unit having:a first control valve that selectively switches, among an advance chamber and a retard chamber formed between the drive-side rotary body and the driven-side rotary body, between ...

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21-01-2016 дата публикации

Valve opening/closing timing control device

Номер: US20160017770A1
Принадлежит: Aisin Seiki Co Ltd

In a valve opening/closing timing control device, a fluid pressure chamber formed by a drive-side rotating and a driven-side rotating body is divided into an advance chamber and a delay chamber. The valve opening/closing timing control device includes an intermediate lock mechanism; an electromagnetic valve; a phase detection sensor; and a control unit that issues a command to the electromagnetic valve to switch a working fluid supply destination to a working fluid supply destination at which the driven-side rotating body shifts to an intermediate lock phase, when a relative rotation phase at the startup of an engine is positioned toward a most delayed phase or a most advanced phase with respect to the intermediate lock phase in case of the electromagnetic valve that sets the working fluid supply destination to the delay chamber or the advance chamber when supply of electric power to the electromagnetic valve is stopped.

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21-01-2016 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20160017821A1
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

The present invention is equipped with: a valve opening/closing timing control mechanism that sets the opening/closing timing of an exhaust valve; and a lock mechanism that holds the rotation phase of the valve opening/closing timing control mechanism in a first lock phase, in which the open state of the exhaust valve is maintained when the intake valve opens.

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18-01-2018 дата публикации

FAILURE DIAGNOSIS APPARATUS FOR VARIABLE COMPRESSION RATIO MECHANISM

Номер: US20180016995A1
Принадлежит:

A failure diagnosis apparatus according to the present disclosure is applied to a variable compression ratio mechanism that can switch the compression ratio of an internal combustion engine between at least a first compression ratio and a second compression ratio lower than the first compression ratio. When the variable compression ratio mechanism is controlled so as to set the compression ratio of the internal combustion engine to the second compression ratio, the failure diagnosis apparatus advances the ignition timing of one cylinder to a knock inducing ignition timing more advanced than the MBT that does not lead to the occurrence of knock if the actual compression ratio of that cylinder is the second compression ratio but leads to the occurrence of knock if the actual compression ratio of that cylinder is the first compression ratio and diagnoses failure of the variable compression ratio mechanism on the basis of whether knock occurs or not. 1. A failure diagnosis apparatus for a variable compression ratio mechanism for use in a spark-ignition internal combustion engine provided with a variable compression ratio mechanism capable of switching the compression ratio of the internal combustion engine having a plurality of cylinders between at least a first compression ratio and a second compression ratio lower than the first compression ratio and including a compression ratio changing mechanism provided in each of the cylinders of the internal combustion engine , a knock sensor attached to the internal combustion engine , and an ignition plug attached to each of the cylinders of the internal combustion engine ,the failure diagnosis apparatus comprising:a controller comprising at least one processor configured to:perform advancing process for diagnosis to advance the ignition timing of one cylinder of the internal combustion engine to a knock inducing ignition timing more advanced than the MBT that does not lead to the occurrence of knock if the actual compression ...

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17-01-2019 дата публикации

Controller for internal combustion engine

Номер: US20190017457A1
Принадлежит: Aisin Seiki Co Ltd

A controller for an internal combustion engine includes: a failure determination section which determines a failure state in a case where a relative rotation phase of an intake side valve opening and closing timing control mechanism does not change when controlling the mechanism after starting the driving of a starter motor and trying to change the relative rotation phase of the mechanism in a start control for starting an internal combustion engine. When the section determines a failure, the controller performs at least one of an intake air amount increase control in which an opening degree of a throttle valve is increased, an ignition timing advance angle control in which injection of fuel is performed at a timing earlier than a set timing and ignition is performed, and a multi-injection control in which the fuel is injected immediately before the ignition in addition to the fuel injection in an intake stroke.

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22-01-2015 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20150020759A1
Принадлежит:

A variable displacement pump includes an urging mechanism to urge a cam ring in an eccentric direction and to increase the urging force when an eccentricity is decreased, a first control chamber to apply a force to the cam ring in a direction decreasing the eccentricity, and a second control chamber to apply a force, to the cam ring, in a direction increasing the eccentricity. The variable displacement pump further includes a thermosensitive mechanism to control the supply and drain of a discharge pressure supplied into the second control chamber, and a control valve to be operated by the discharge pressure and to decrease the pressure in the second control chamber when the discharge pressure increases. 1. A variable displacement pump for an internal combustion engine , to supply an oil to a hydraulic variable valve actuation device , an oil jet and a crankshaft bearing , comprising:a rotor adapted to be driven by the internal combustion engine;a plurality of vanes slidably received in an outer circumference of the rotor;a cam ring which includes an inside circumferential surface enclosing the rotor and the vanes, having a center line eccentric from a rotation axis of the rotor, and defining a plurality of operating oil chambers, and which is arranged to move to vary an eccentricity and thereby to vary a pumping volume;is an intake portion opening into the operating oil chambers in a volume increasing region in which volumes of the operating oil chambers are increased with rotation of the rotor;a discharge portion opening into the operating oil chambers in a volume decreasing region in which the volumes of the operating oil chambers are decreased with rotation of the rotor;an urging mechanism including first and second spring members provided with respective spring loads, and arranged to apply an urging force to the cam ring in an eccentric direction with a spring force produced by the first and second spring members, and to increase the urging force of the first ...

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16-01-2020 дата публикации

Device for determining normality of electromagnetic control valve

Номер: US20200018668A1
Автор: Junki MATSUI
Принадлежит: JATCO Ltd, Nissan Motor Co Ltd

In the present invention, a secondary pressure solenoid valve (74) for adjusting the pressure of oil supplied from an oil pump (70) so as to make the same an indicated pressure and a CVT control unit (8) for determining whether the adjustment operation of the secondary pressure solenoid valve (74) is normal are provided. This device for determining the normality of an electromagnetic control valve is provided with a secondary pressure sensor (82) for detecting the actual pressure arrived at through adjustment by the secondary pressure solenoid valve (74). The CVT control unit (8) uses a plurality of non-overlapping indicated pressure regions as determination regions for determining the normality of the adjustment operation of the secondary pressure solenoid valve (74). If the difference between the indicated pressure and actual pressure is determined to be less than a threshold in each of the plurality of indicated pressure regions, a determination is made that the secondary pressure solenoid valve (74) is normal. As a result, when determining whether the adjustment operation of an electromagnetic control valve is normal, it is possible to avoid erroneous determinations when a failure occurs and accurately determine the normality of the adjustment operation of the electromagnetic control valve.

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28-01-2016 дата публикации

CAMSHAFT PHASER

Номер: US20160024978A1
Автор: LICHTI THOMAS H.
Принадлежит:

A camshaft phaser includes an input member; an output member defining an advance chamber and a retard chamber with the input member; a valve spool moveable between an advance position and a retard position and having a valve spool bore with a phasing volume and a venting volume defined therein such that the phasing volume is fluidly segregated from the venting volume; and a phasing check valve within the valve spool. The advance position allows oil to flow through the phasing check valve and through the phasing volume from the advance chamber to the retard chamber while preventing oil from flowing from the retard chamber to the advance chamber and the retard position allows oil to flow through the check valve and through the phasing volume from the retard chamber to the advance chamber while preventing oil from flowing from the advance chamber to the retard chamber. 1. A camshaft phaser for use with an internal combustion engine for controllably varying the phase relationship between a crankshaft and a camshaft in said internal combustion engine , said camshaft phaser comprising:an input member connectable to said crankshaft of said internal combustion engine to provide a fixed ratio of rotation between said input member and said crankshaft;an output member connectable to said camshaft of said internal combustion engine and defining an advance chamber and a retard chamber with said input member; anda valve spool moveable between an advance position and a retard position and having a valve spool bore with a phasing volume and a venting volume defined within said valve spool bore such that said phasing volume is fluidly segregated from said venting volume;wherein oil is supplied to said advance chamber from said phasing volume in order to retard the timing of said camshaft relative to said crankshaft; andwherein oil is supplied to said retard chamber from said phasing volume in order to advance the timing of said camshaft relative to said crankshaft.2. A camshaft ...

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28-01-2016 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20160025017A1
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An internal combustion engine is equipped with an intake camshaft and a valve timing adjustment device. The intake camshaft has an intra-axial oil channel, and an outflow hole that causes hydraulic oil in the intra-axial oil channel to flow out toward an intake valve. The valve timing adjustment device discharges hydraulic oil to the intra-axial oil channel in changing the valve timing. A controller executes control for holding the valve timing when an execution condition including that idling operation of the internal combustion engine has continued for a predetermined time is not fulfilled, and executes fluctuation control for fluctuating the valve timing by controlling the valve timing adjustment device when the aforementioned execution condition is fulfilled. 1. A control device for an internal combustion engine , the internal combustion engine includinga valve,a camshaft that has an intra-axial oil channel, and an outflow hole that causes hydraulic oil in the intra-axial oil channel to flow out toward the valve, anda valve timing adjustment device that is hydraulically driven, the valve timing adjustment device having a first oil chamber for advancement and a second oil chamber for retardation, the valve timing adjustment device being configured to discharge the hydraulic oil in the second oil chamber to the intra-axial oil channel in advancing a valve timing, and the valve timing adjustment device being configured to discharge the hydraulic oil in the first oil chamber to the intra-axial oil channel in retarding the valve timing,the control device comprising:a controller configured to(i) execute control for holding the valve timing when an execution condition including that idling operation of the internal combustion engine has continued for a predetermined time is not fulfilled, and(ii) execute fluctuation control for fluctuating the valve timing by controlling the valve timing adjustment device when the execution condition is fulfilled.2. The control device ...

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26-01-2017 дата публикации

CAMSHAFT PHASER WITH A ROTARY VALVE SPOOL

Номер: US20170022849A1
Принадлежит:

A camshaft phaser includes a stator; a rotor defining an advance chamber and a retard chamber with the stator; a valve spool that is rotatable about an axis and defining a supply chamber and a vent chamber with the rotor; an actuator which rotates the valve spool to change the position of the rotor relative to the stator by 1) supplying oil from the supply chamber to the advance chamber and venting oil from the retard chamber to the vent chamber and 2) supplying oil from the supply chamber to the retard chamber and venting oil from the advance chamber to the vent chamber; and a check valve which is displaceable axially between an open position which allows oil to flow from the vent chamber to the supply chamber and a closed position which prevents oil from flowing from the supply chamber to the vent chamber. 1. A camshaft phaser for use with an internal combustion engine for controllably varying the phase relationship between a crankshaft and a camshaft in said internal combustion engine , said camshaft phaser comprising:an input member connectable to said crankshaft of said internal combustion engine to provide a fixed ratio of rotation between said input member and said crankshaft;an output member connectable to said camshaft of said internal combustion engine and defining an advance chamber and a retard chamber with said input member;a valve spool coaxially disposed within said output member such that said valve spool is rotatable about an axis relative to said output member and said input member, said valve spool defining a supply chamber and a vent chamber with said output member;an actuator which rotates said valve spool in order to change the position of said output member relative to said input member by 1) supplying oil from said supply chamber to said advance chamber and venting oil from said retard chamber to said vent chamber when retarding the phase relationship of said camshaft relative to said crankshaft is desired and 2) supplying oil from said ...

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26-01-2017 дата публикации

CVVT APPARATUS FOR ENGINE

Номер: US20170022850A1
Принадлежит:

A continuous variable valve timing apparatus for an engine includes: a housing, a rotor installed to be rotatable relative to the housing and connected to a camshaft, a locking pin configured to restrict rotation of the rotor relative to the housing when pushed by an elastic force to move linearly and pass through a relatively rotating surface between the housing and the rotor, an elastic member installed to provide the elastic force, a valve bolt coupled to the camshaft through the housing and the rotor, wherein the valve bolt includes a release passage through which a release pressure provided through the camshaft is transferred to the locking pin via the rotor, and a valve means for selectively blocking or unblocking the release passage, and an actuator installed to actuate the valve means of the valve bolt according to an actuation displacement. 1. A continuous variable valve timing (CVVT) apparatus for an engine , comprising:a housing;a rotor installed to be rotatable relative to the housing and connected to a camshaft;a locking pin configured to restrict rotation of the rotor relative to the housing when pushed by an elastic force to move linearly and pass through a relatively rotating surface between the housing and the rotor;an elastic member installed to provide the elastic force;a valve bolt coupled to the camshaft through the housing and the rotor, wherein the valve bolt includes a release passage through which a release pressure provided through the camshaft is transferred to the locking pin via the rotor, and a valve means for selectively blocking or unblocking the release passage; andan actuator installed to actuate the valve means of the valve bolt according to an actuation displacement thereof.2. The CVVT apparatus according to claim 1 , wherein a release pressure supply groove is formed in a journal of the camshaft for supplying the release pressure to the release passage claim 1 , and the camshaft is formed with a communication hole through which ...

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26-01-2017 дата публикации

INTERMEDIATE PHASE ADJUSTMENT APPARATUS OF CVVT

Номер: US20170022851A1
Принадлежит:

An intermediate phase adjustment apparatus of intermediate phase continuous variable valve timing includes chambers and a diverter valve balancing oil pressure between the chambers. The chamber includes an advancing chamber and a retarding chamber formed between a rotor and a stator and supplied with oil through an oil channel. The diverter valve balances oil pressure between the chambers by sliding along an oil line through which the oil moves only in one direction between the chambers so that the oil selectively moves from a chamber having higher pressure to a chamber having lower pressure due to a pressure difference. 1. An intermediate phase adjustment apparatus of intermediate phase continuous variable valve timing (CVVT) , the apparatus comprising:chambers including an advancing chamber and a retarding chamber formed between a rotor and a stator and supplied with oil through an oil channel; anda diverter valve balancing oil pressure between the chambers by sliding along an oil line through which the oil moves only in one direction between the chambers so that the oil selectively moves from a chamber having higher pressure to a chamber having lower pressure due to a pressure difference.2. The apparatus of claim 1 , wherein the oil channel for supplying the oil for operating the CVVT is formed in the chambers claim 1 , the diverter valve is disposed between the oil line and the oil channel claim 1 , and the oil line and the oil channel are selectively opened or closed.3. The apparatus of claim 1 , wherein:when pressured by hydraulic pressure, the diverter valve blocks the oil line; andwhen the hydraulic pressure is removed, the diverter valve is returned by an elastic member coupled to the diverter valve and blocks the oil channel.4. The apparatus of claim 1 , wherein outlets for discharging the oil to corresponding chambers are formed at a first side of the oil line and check valves are disposed at a second side of the oil line to prevent backward flow of oil.5 ...

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26-01-2017 дата публикации

CVVT APPARATUS FOR ENGINE

Номер: US20170022852A1
Принадлежит:

A Continuous Variable Valve Timing (CVVT) apparatus for an engine may include a housing, a rotor disposed to be rotatable relative to the housing, a locking pin passing through a facing relatively rotating surface between the housing and the rotor by elastic force so as to restrict rotation of the rotor relative to the housing by linear movement, and an oil control valve disposed such that oil is supplied to an advance chamber and a delay chamber provided between the rotor and the housing, in which, when a control duty value applied to the oil control valve is “0”, the oil control valve is fixed in a state in which the oil is supplied to the advance chamber. 1. A Continuous Variable Valve Timing (CVVT) apparatus for an engine , comprising:a housing;a rotor disposed to be rotatable relative to the housing;a locking pin passing through a facing relatively rotating surface between the housing and the rotor by elastic force so as to restrict rotation of the rotor relative to the housing by linear movement; andan oil control valve disposed such that oil is supplied to an advance chamber and a delay chamber provided between the rotor and the housing,wherein, when a control duty value applied to the oil control valve is “0”, the oil control valve is fixed in a state in which the oil is supplied to the advance chamber.2. The CVVT apparatus according to claim 1 , wherein the oil control valve is supplied with oil from an oil pump claim 1 , and is configured to controllably supply the supplied oil to the advance and delay chambers by a solenoid operated in response to control duty provided from a controller claim 1 , and a return spring for providing elastic force.3. The CVVT apparatus according to claim 2 , wherein the oil control valve is a four-port valve comprising an inlet port for receiving oil from the oil pump claim 2 , an advance port to communicate with the advance chamber claim 2 , a delay port to communicate with the delay chamber claim 2 , and a drain port for ...

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26-01-2017 дата публикации

INTERMEDIATE PHASE ADJUSTMENT APPARATUS OF CVVT

Номер: US20170022853A1
Принадлежит:

An intermediate phase adjustment apparatus of a CVVT includes check valves provided to prevent backflow of oil when the oil moves from one chamber to another chamber in order to secure a parking position of a lock pin in a CVVT of which an advance chamber and a retard chamber are formed between a rotor and a stator, and an oil inlet portion formed at the stator to correspond to inlet portions of the check valves, wherein an oil inlet portion provided at one chamber is formed larger than an oil inlet portion provided at the other chamber by a predetermined size, and the open angles of the check valves for making oil to flow into a chamber are increased, thereby preventing an offset occurrence by a cam torque. 1. An intermediate phase adjustment apparatus of a CVVT , comprising:check valves provided to prevent backflow of oil when the oil moves from one chamber to another chamber in order to secure a parking position of a lock pin in a CVVT of which an advance chamber and a retard chamber are formed between a rotor and a stator; andan oil inlet portion formed at the stator to correspond to inlet portions of the check valves;wherein an oil inlet portion provided at one chamber is formed larger than an oil inlet portion provided at the other chamber by a predetermined size, and the open angles of the check valves for making oil to flow into a chamber are increased, thereby preventing an offset occurrence by a cam torque.2. The intermediate phase adjustment apparatus of a CVVT of claim 1 , wherein the oil inlet portion is formed at the retard chamber and the advance chamber claim 1 , and an oil inlet portion of the retard chamber is formed larger than an oil inlet portion of the advance chamber.3. The intermediate phase adjustment apparatus of a CVVT of claim 1 , wherein the open angle difference between the check valves by the size difference of the oil inlet portions provided at one chamber and at another chamber is 1˜2°.4. The intermediate phase adjustment apparatus ...

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26-01-2017 дата публикации

CONTROL VALVE FOR VALVE TIMING CONTROL DEVICE AND VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20170022854A1
Автор: TAKADA Yasuhide
Принадлежит: Hitachi Automotive Systems, Ltd.

Provided is a control valve capable of reducing the axial length of a device as much as possible, thereby improving its mountability. An electromagnetic selector valve is equipped with a valve body functioning as a cam bolt for connecting a vane rotor to one end of a camshaft, a sleeve fixed to an inner peripheral surface of the valve body, and a spool valve element axially slidably housed in the sleeve for switching between supply and discharge of working fluid to and from each of a phase-retard working chamber and a phase-advance working chamber. The valve body has a male screw part formed on an outer peripheral surface and screwed into a female screw part formed in a cam bolt hole. The position of formation of the male screw part and the position of the spool valve element are arranged to axially overlap with each other. 1. A control valve for a valve timing control device equipped with a driving rotary member adapted to receive a rotational force transmitted from a crankshaft and having an operating chamber formed therein , and a driven rotary member fixed to one axial end of a camshaft and rotatably housed in the driving rotary member so as to partition the operating chamber into a phase-advance working chamber and a phase-retard working chamber , and configured to relatively rotate to either a phase-advance side or a phase-retard side with respect to the driving rotary member by supply and discharge of working fluid for both of the working chambers , the control valve comprising:a cylindrical valve body configured to axially fixedly connect the driven rotary member to the camshaft; anda spool valve element axially slidably housed in the valve body and configured to perform switching between supply and discharge of the working fluid to and from each of the working chambers,wherein the valve body has a fixed part formed on an outer peripheral surface of the valve body nearer to the driven rotary member rather than near an axial distal end of the valve body, the ...

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10-02-2022 дата публикации

Insertion piece for camshaft phaser and camshaft phaser

Номер: US20220042427A1
Автор: Xiaona Liu
Принадлежит: Schaeffler Technologies AG and Co KG

The present disclosure relates to an insertion piece for a camshaft phaser and the camshaft phaser. The insertion piece is configured to be partially inserted and mounted into a center hole of the rotor of the camshaft phaser. The insertion piece has a stepped cylindrical shape across its entirety and includes a first cylinder portion, a second cylinder portion, and a third cylinder portion, which are connected to each other and are coaxially arranged. The first cylinder portion extends along the axial direction; the second cylinder portion is located at one axial side of the first cylinder portion and extends along the axial direction; the third cylinder portion is located at one axial side of the second cylinder portion and extends along the axial direction; and a clamping connection portion for fixing the coil spring of the camshaft phaser is formed on the third cylinder portion.

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23-01-2020 дата публикации

HYDROSTATIC CAMSHAFT PHASER

Номер: US20200025044A1
Автор: McCloy Chad
Принадлежит:

A hydrostatic camshaft phaser system includes a hydraulically-actuated camshaft phaser with a rotor; and a stator housing that receives the rotor and includes an advancing chamber and a retarding chamber defined at least partially by the vane; and a variable displacement pump, in fluid communication with the hydraulically-actuated camshaft phaser, comprising a first chamber in fluid communication with the advancing chamber and a second chamber in fluid communication with the retarding chamber; the first chamber receives fluid from a first non-continuous groove extending along a camshaft surface or a bearing surface and the second chamber receives fluid from a second non-continuous groove extending along the camshaft surface or the bearing surface during a first portion of camshaft rotation, and the first chamber receives fluid from the second non-continuous groove and the second chamber receives fluid from the first non-continuous groove during a second portion of camshaft rotation. 1. A hydrostatic camshaft phaser system , comprising: a rotor having a vane extending radially outwardly from a hub;', 'a stator housing that receives the rotor and includes an advancing chamber and a', 'retarding chamber defined at least partially by the vane; and, 'a hydraulically-actuated camshaft phaser that includesa variable displacement pump, in fluid communication with the hydraulically-actuated camshaft phaser, comprising a first chamber in fluid communication with the advancing chamber and a second chamber in fluid communication with the retarding chamber, wherein the first chamber receives fluid from a first non-continuous groove extending in between a camshaft surface and a bearing surface and the second chamber receives fluid from a second non-continuous groove extending in between the camshaft surface and the bearing surface during a first portion of camshaft rotation, andwherein the first chamber receives fluid from the second non-continuous groove and the second chamber ...

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28-01-2021 дата публикации

TWO-PIECE VANE SEAL

Номер: US20210025295A1
Принадлежит:

A two piece vane seal for a variable cam timing phaser for an internal combustion engine that reduces leakage. The two piece vane seal having a first portion including a first end, a second end, and a flange extending axially from the first end. Also having a second portion including a first end, a second end, and a flange extending axially from the first end. The first portion is assembled relative to and connected to the second portion. Also having a spring having a first end and a second end and a length, extending over the curved ledge of the longitudinally extending wall of the first portion and the second portion. 1. A two piece vane seal comprising: a first end;', 'a second end connected to the first end;', 'a flange extending axially from the first end;', 'wherein the first end and the second end are connected by a longitudinally extending wall;', an inner surface;', 'a rectangular structure extending radially outward from and parallel to the inner surface of the longitudinally extending wall;', 'a flat surface extending parallel to and radially outward from the inner surface of the longitudinally extending wall;', 'a first longitudinal recess defined by the rectangular structure adjacent to at least the flat surface defining a second longitudinal recess between the flat surface and the rectangular structure and including a radially outward exposed surface;', 'at least one spring end retainer extending radially outward from the inner surface of the longitudinally extending wall;', 'an edge protruding radially outward from the inner surface of the longitudinally extending wall, projecting from the second end a length and aligned with the second longitudinal recess including a first end with a protrusion and a second end;', 'a curved ledge extending radially outward from and parallel to the inner surface of the longitudinally extending wall between the second end and the spring end retainer;', 'a ramp extending radially outward from and parallel to the inner ...

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02-02-2017 дата публикации

Central valve for a camshaft adjuster having central locking

Номер: US20170030230A1
Автор: David KOEHLER
Принадлежит: Schaeffler Technologies AG and Co KG

A central valve ( 1 ) for a camshaft adjusting device including a control piston ( 2 ) having a first ( 3 ) and a second ( 4 ) control edge which enclose a first annular groove ( 6 ), including a valve housing ( 26 ), on the peripheral wall of which openings ( 14, 15, 16, 17, 18 ) are disposed, and including pressure medium paths extending between a feed connection and a discharge connection P, T of which the adjustable configuration is predetermined by the control edge geometry and the arrangement of the openings ( 14, 15, 16, 17, 18 ) and the adjusted configuration is dependent upon the relative axial position of the control piston ( 2 ).

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04-02-2016 дата публикации

Internal combustion engine with a camshaft phaser

Номер: US20160032790A1
Принадлежит: Delphi Technologies Inc

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

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04-02-2016 дата публикации

CONCENTRIC DUAL INDEPENDENT CAMSHAFT PHASER FOR DUAL OVERHEAD CAMSHAFT VALVE TRAIN

Номер: US20160032791A1
Принадлежит:

A variable valve timing system and methods of operation are provided. A primary valve train driver is configured to rotate about a primary axis. A primary camshaft includes a first plurality of cams positioned on the primary camshaft. The primary camshaft is coaxially coupled to the primary valve train driver. The first plurality of cams is configured to rotate about the primary axis. A primary camshaft phaser is coaxially coupled to the primary camshaft. The primary camshaft phaser is rotatably coupled to the primary valve train driver so as to rotate the primary camshaft phaser and the primary camshaft to a first phase angle. A secondary camshaft driver on the primary axis is coaxially coupled to the primary camshaft, and a secondary camshaft phaser is coaxially coupled to the primary camshaft and coupled to the secondary camshaft driver on the primary axis. The secondary camshaft phaser is rotatably coupled to the primary valve train driver so as to rotate the secondary camshaft driver on the primary axis to a second phase angle. 1. A variable valve timing system , comprising:a primary valve train driver configured to rotate about a primary axis;a primary camshaft including a first plurality of cams positioned on the primary camshaft, the primary camshaft coaxially coupled to the primary valve train driver, the first plurality of cams configured to rotate about the primary axis;a primary camshaft phaser coaxially coupled to the primary camshaft, the primary camshaft phaser rotatably coupled to the primary valve train driver so as to rotate the primary camshaft phaser and the primary camshaft to a first phase angle with respect to the primary valve train driver;a secondary camshaft driver on the primary axis coaxially coupled to the primary camshaft; anda secondary camshaft phaser coaxially coupled to the primary camshaft and coupled to the secondary camshaft driver on the primary axis , the secondary camshaft phaser rotatably coupled to the primary valve train ...

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05-02-2015 дата публикации

VALVE TIMING ADJUSTING DEVICE

Номер: US20150034032A1
Принадлежит:

In a valve timing adjusting device, a vane rotor includes a second supply oil passage connectable to a first supply oil passage of a second shaft. A check valve is provided between the vane rotor and the second shaft, and permits a flow from the first supply oil passage toward the second supply oil passage and prevents a flow from the second supply oil passage toward the first supply oil passage. A fixing unit is provided between the check valve and the second shaft, and fixes the check valve between the fixing unit and the vane rotor. The fixing unit includes a third supply oil passage which connects the first supply oil passage and the second supply oil passage. A filter is provided for the fixing unit and can capture foreign substances flowing through the third supply oil passage. 1. A valve timing adjusting device adapted to be provided on a drive force transmission route from a driving shaft to a driven shaft of an engine , the valve timing adjusting device adjusting valve timing of a valve which is opened or closed by the driven shaft , and comprising:a housing that is rotatable integrally with a first shaft which is one of the driving shaft and the driven shaft;a vane rotor that is rotatable integrally with a second shaft which is the other one of the driving shaft and the driven shaft and that defines an advance chamber and a retard chamber between the vane rotor and the housing, the vane rotor including a second supply oil passage connectable to a first supply oil passage of the second shaft;a direction switching valve that is provided at a central part of the vane rotor, wherein the direction switching valve connects together the second supply oil passage and the advance chamber at time of rotation of the vane rotor toward an advance side relative to the housing, and connects together the second supply oil passage and the retard chamber at time of rotation of the vane rotor toward a retard side relative to the housing;a check valve that is provided between ...

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17-02-2022 дата публикации

Camshaft adjusting system and method for operating a camshaft adjusting system

Номер: US20220049632A1
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A camshaft adjusting system includes a first electromechanical camshaft adjuster, which is configured for the adjustment of an intake camshaft, and a second electromechanical camshaft adjuster, which is configured for the adjustment of an exhaust camshaft. At least one of the camshaft adjusters can be operated as a generator and is linked to an energy store for the supply of energy to the other camshaft adjuster. 1. A camshaft adjusting system , comprising:a first electromechanical camshaft adjuster configured for adjustment of an intake camshaft, anda second electromechanical camshaft adjuster configured for adjustment of an exhaust camshaft, andat least one of the camshaft adjusters is configured to operate as a generator and is electrically connected to an energy store configured to supply energy to a remaining one of the camshaft adjusters.2. The camshaft adjusting system of claim 1 , wherein each of the first and second camshaft adjusters comprises:a three-shaft transmission configured as an actuating transmission, andan electric motor configured for actuation of the three-shaft transmission.3. The camshaft adjusting system of claim 2 , wherein the three-shaft transmission is a harmonic gearbox.4. The camshaft adjusting system of claim 2 , wherein the actuating transmission of the first electromechanical camshaft adjuster is configured as a positive gearbox.5. The camshaft adjusting system of claim 4 , wherein the actuating transmission of the second electromechanical camshaft adjuster is configured as a negative gearbox.6. The camshaft adjusting system of claim 1 , wherein the energy store comprises a capacitor.7. A method for operating a camshaft adjusting system of an internal combustion engine claim 1 , the method comprising:providing a camshaft adjusting system having two camshaft adjusters, each camshaft adjuster having an electric motor,operating the electrical motor of one of the two camshaft adjusters as a generator in a first operating phase so that ...

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17-02-2022 дата публикации

Rotor for Camshaft Phaser and Camshaft Phaser

Номер: US20220049633A1
Автор: PENG Wang
Принадлежит: Schaeffler Technologies AG and Co KG

The present disclosure relates to a rotor for a camshaft phaser. A balance groove is formed inside the end face of one axial side of the rotor and inside the end face of the other axial side of the rotor. A through-hole penetrating through the rotor in an axial direction is formed in the rotor, and the balance grooves at the two sides of the rotor are in communication with each other by the through-hole. The rotor can balance gaps between the rotor and two end covers, so that the amount of engine oil leaking from the gaps of an oil chamber can be maintained at a low level, and the probability of hard contact between the rotor and the end covers is reduced, thus also reducing the wear between the rotor and the end covers.

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31-01-2019 дата публикации

EPHASER CUSHION STOP

Номер: US20190032722A1
Принадлежит:

A variable camshaft timing device adjusts phase between a camshaft and a crankshaft and includes a first ring gear configured to connect to the camshaft and rotate about a center axis, having a plurality of radially-inwardly facing gear teeth; a second ring gear axially spaced from the first ring gear, configured to receive rotational input from the crankshaft and rotate about the center axis, having a plurality of radially-inwardly facing gear teeth; a planetary gear assembly including one or more planet gears that are configured for rotation by an electric motor and engage the first ring gear and the second ring gear through the planet gear(s); and a cushioned stop configured to transmit energy between the planetary gear assembly and a planetary gear stop attached to a sprocket or a camshaft plate. 1. A variable camshaft timing device that adjusts phase between a camshaft and a crankshaft , comprising:a first ring gear configured to connect to the camshaft and rotate about a center axis, having a plurality of radially-inwardly facing gear teeth;a second ring gear axially spaced from the first ring gear, configured to receive rotational input from the crankshaft and rotate about the center axis, having a plurality of radially-inwardly facing gear teeth;a planetary gear assembly including one or more planet gears that are configured for rotation by an electric motor and engage the first ring gear and the second ring gear through the planet gear(s); anda cushioned stop configured to transmit energy between the planetary gear assembly and a planetary gear stop attached to a sprocket or a camshaft plate.2. The variable camshaft timing device of claim 1 , wherein the planetary gear stop moves radially inwardly and radially outwardly relative to the center axis.3. The variable camshaft timing device of claim 2 , wherein the planetary gear stop moves about a pivot.4. The variable camshaft timing device of claim 1 , further comprising a carrier assembly configured for ...

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30-01-2020 дата публикации

Internal combustion engine

Номер: US20200032679A1
Автор: Yoshiki Endo
Принадлежит: Toyota Motor Corp

An internal combustion engine includes exhaust-side and intake-side variable valve timing mechanisms, an oil passage defined in the cylinder head, an exhaust-side connection passage that branches from the oil passage to conduct oil to the exhaust-side variable valve timing mechanism, and an intake-side connection passage that branches from the oil passage to conduct oil to the intake-side variable valve timing mechanism. The connection passage that conducts oil to one of the exhaust-side variable valve timing mechanism and the intake-side variable valve timing mechanism that has a greater amount of oil leakage when oil having the same pressure is supplied to the variable valve timing mechanisms to operate the variable valve timing mechanisms is located at a downstream side in the oil passage of the connection passage that conducts oil to the variable valve timing mechanism that has a smaller amount of oil leakage.

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04-02-2021 дата публикации

ROLLING LOCKING ASSEMBLY FOR CAMSHAFT PHASER

Номер: US20210033006A1
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A camshaft phaser is provided that includes a stator and a rotor having a locking assembly. The locking assembly has a first unlocked position and a second locked position and is configured to roll against the stator in the first unlocked position and lock the rotor to the stator in the second locked position. The locking assembly can include a locking pin, a retention insert, and a rolling element arranged within the retention insert. 1. A camshaft phaser , comprising:a stator;a rotor having: [ a retention insert disposed within an aperture, the retention insert movable in a longitudinal direction of the aperture and configured to receive a rolling element;', 'a locking pin disposed at least, partially within the aperture; and', 'a bias spring arranged between, the retention insert and locking pin; and, 'a locking assembly having, 'in a second locked position of the locking assembly, the retention insert is pushed against the stator via a second force different than the first force.', 'in a first unlocked position of the locking assembly, the retention insert is pushed against the stator via a first force and rolls on the stator via the rolling element; and'}], 'a plurality of vanes that form fluid chambers with the stator; and'}2. The camshaft phaser of claim 1 , wherein the locking assembly is configured to roll against a flat axial surface of the stator.3. The camshaft phaser of claim 1 , further comprising a cover that is non-rotatably attached to the stator claim 1 , the locking assembly configured to roll against the cover.4. (canceled)5. The camshaft phaser of claim 1 , wherein the rolling element is a ball or a roller.6. The camshaft phaser of claim 1 , wherein the locking pin is configured to be hydraulically actuated via a groove extending directly from a locking end of the aperture claim 1 , the groove arranged on an axial face of the rotor.7. (canceled)8. (canceled)9. The camshaft phaser of claim 1 , wherein the locking pin protrudes from a locking end ...

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12-02-2015 дата публикации

ENGINE CONTROL MECHANISM

Номер: US20150040863A1
Автор: KANEKO Masaaki
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

An engine control mechanism includes intake and exhaust valves that opens and closes a combustion chamber of an engine to be driven with gasoline. The engine control mechanism includes: an intake-side VVT including first driving-side and driven-side rotary bodies, and capable of setting a valve opening/closing timing of the intake valve such that a relative phase of the first driven-side rotary body is set to an intermediate lock phase at the time of starting of the engine, and the relative phase is set to a more retarded side than the intermediate lock phase after the starting; an exhaust-side VVT including second driving-side and driven-side rotary bodies, and setting a valve opening/closing timing of the exhaust valve such that a relative phase of the second driven-side rotary body is set to any phase between the most advanced phase and the most retarded phase; a control unit advance-controlling the ignition timing when an operational state has shifted from an Atkinson cycle state to a transient operational state; and an ignition timing changing mechanism in which the driving is controlled by the control unit. 1. An engine control mechanism including an intake valve that opens and closes a combustion chamber of an engine to be driven with gasoline so that gasoline and air flow into the combustion chamber , and an exhaust valve that opens and closes the combustion chamber so that a combustion exhaust gas flows out of the combustion chamber , the engine control mechanism comprising:an intake-side VVT that includes a first driving-side rotary body and a first driven-side rotary body, and is capable of setting a valve opening/closing timing of the intake valve such that a relative phase of the first driven-side rotary body with respect to the first driving-side rotary body is set to an intermediate lock phase between a most advanced phase and a most retarded phase at the time of starting of the engine, and the relative phase is set to a more retarded side than the ...

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09-02-2017 дата публикации

CONNECTION CONCEPT OF A MULTIPART ROTOR FOR A HYDRAULIC CAMSHAFT ADJUSTER

Номер: US20170037746A1
Автор: Weber Juergen
Принадлежит:

A multipart rotor () for a hydraulic camshaft adjuster, including a rotor main body () which is connected to a first rotor auxiliary body () for conjoint rotation and in an axially fixed manner, the rotor main body () and the first rotor auxiliary body () together forming at least one hydraulic medium guide channel (). A second ring-shaped rotor auxiliary body () is arranged concentric to the rotor main body () and the first rotor auxiliary body () on the radially inner side of both components, the second rotor auxiliary body () being fastened to the rotor main body () and/or to the first rotor auxiliary body () for conjoint rotation and in an axially fixed manner. 110-. (canceled)11. A multipart rotor for a hydraulic camshaft adjuster , the multipart rotor comprising:a rotor main body connected to a first rotor secondary body in a rotatably fixed and axially fixed manner, the rotor main body and the first rotor secondary body together forming at least one hydraulic medium-conducting channel, anda ring-shaped second rotor secondary body being situated concentrically with respect to the rotor main body and the first rotor secondary body on a radially inner side of the rotor main body and the first rotor secondary body,the second rotor secondary body being secured to the rotor main body or to the first rotor secondary body in an axially fixed and rotatably fixed manner.12. The rotor as recited in wherein the axially fixed and rotatable fixed manner is achieved via a press fit or caulking.13. The rotor as recited in wherein the axially fixed and rotatable fixed manner is achieved via a longitudinal press fit.14. The rotor as recited in wherein the second rotor secondary body is designed as an oil-conducting ring conducting oil supplied axially from two sides of the oil-conducting ring to different hydraulic medium-conducting channels of the at least one hydraulic medium-conducting channel claim 11 , oil from one side of the oil-conducting ring being supplied only to ...

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09-02-2017 дата публикации

VARIABLE VALVE ACTUATION APPARATUS FOR INTERNAL COMBUSTION ENGINE

Номер: US20170037747A1
Принадлежит:

In a variable valve actuation apparatus for an internal combustion engine, a rotor of a variable valve timing mechanism is fixed to one end of a camshaft by a plurality of bolts. An oil control valve configured to control hydraulic pressure that acts on the rotor is fixed to the rotor by one or some of the plurality of bolts. For this reason, by releasing fastening of the bolt that fixes the oil control valve to the rotor among the plurality of bolts that fix the rotor to the one end of the camshaft, the oil control valve is allowed to be removed from the rotor while the rotor is fixed to the camshaft. Therefore, it is not required to perform positioning for fixing the rotor to the camshaft at the time of replacement of the oil control valve. 1. A variable valve actuation apparatus for an internal combustion engine , the variable valve actuation apparatus comprising:a variable valve timing mechanism including a movable member fixed to one end of a camshaft of the internal combustion engine; andan oil control valve configured to control hydraulic pressure that ants on the movable member, whereinthe movable member is fixed to the one end of the camshaft by a plurality of bolts, andthe oil control valve is fixed to the movable member by one or some of the plurality of bolts.2. The variable valve actuation apparatus according to claim 1 , whereinthe oil control valve is inserted in an accommodation hole provided at a center of the movable member, andthe oil control valve is fixed to the movable member by pressing the oil control valve into the accommodate hole with a use of a stay fixed to the movable member by the one or some of the plurality of bolts.3. The variable valve actuation apparatus according to claim 2 , whereinthe stay has a hole for allowing the one or some of the belts to extend through the hole, and has a pair of sandwiching pieces that protrude in a direction perpendicular to an axis of the hole and parallel to each other, andthe oil control valve is ...

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09-02-2017 дата публикации

CAMSHAFT ADJUSTER

Номер: US20170037748A1
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A camshaft adjuster () including a stator () and a rotor (), a spring () tenses the rotor () rotationally counter to the stator (). According to the invention, the spring is a helical spring (), the stator () includes a first recess () of a first free end () of the helical spring () and the rotor () includes a second recess () for a second free end () of the helical spring (). 110-. (canceled)11: A camshaft adjuster comprising:a stator and a rotor; anda spring rotatably bracing the rotor against the stator, the spring being a coil spring, the stator having a first recess for a first free end of the coil spring, the rotor having a second recess for a second free end of the coil spring.12: The camshaft adjuster as recited in wherein a polygon forms the second recess at an inner wall of the rotor claim 11 , a correspondingly shaped spring winding of the second free end of the coil spring cooperating with the polygon in a form-fit manner.13: The camshaft adjuster as recited in wherein a borehole forms the second recess at an angle less than or equal to 90° with respect to a pulling direction of the coil spring in the rotor claim 11 , the second free end of the coil spring being introduced into the borehole.14: The camshaft adjuster as recited in wherein at least one cover is mounted on the stator via at least one screw.15: The camshaft adjuster as recited in wherein a metal sheet is mounted on the stator via at least one screw claim 11 , the metal sheet having an axial bulge defining the first recess claim 11 , the first free end of the coil spring resting in the axial bulge.16: The camshaft adjuster as recited in wherein at least one screw forms an extended screw head or screw shank for the first recess claim 11 , the first free end of the coil spring being suspended on the first recess.17: The camshaft adjuster as recited in wherein at least one cover forms an axial extension element for the first recess claim 11 , the first free end of the coil spring being suspended ...

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09-02-2017 дата публикации

Control Device and Control Method for Internal Combustion Engine

Номер: US20170037787A1
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An engine includes a variable valve mechanism capable of holding a valve timing of an intake valve in an intermediate phase when the engine is started. An ECU calculates a degree of deposit adhesion in a combustion chamber, and calculates a deposit correction amount that is a retard correction amount for an ignition timing set in accordance with the calculated degree of the deposit adhesion. The ECU calculates a first correction amount that is a first adaptive value for the retard correction amount for the ignition timing in a reference phase of the valve timing and a second correction amount that is a second adaptive value for the retard correction amount for the ignition timing in an adaptation phase of the valve timing. The deposit correction amount is set based on the first correction amount and the second correction amount. 1. A control device for an internal combustion engine , the internal combustion engine including an intake valve , a combustion chamber , and a variable valve mechanism , the variable valve mechanism being configured to change a valve timing of the intake valve , and the variable valve mechanism being configured to hold the valve timing in an intermediate phase when the internal combustion engine is started , the intermediate phase being a phase set in a middle between a most retarded phase and a most advanced phase of the valve timing of the intake valve , the control device comprising calculate a degree of deposit adhesion in the combustion chamber;', 'calculate a deposit correction amount, the deposit correction amount being a retard correction amount for an ignition timing set in accordance with the degree of the deposit adhesion;', 'calculate, as a reference correction amount, a first adaptive value for the retard correction amount for the ignition timing with which occurrence of knocking is suppressed when the amount of the deposit adhesion is equal to or more than a predetermined amount and a phase of a present valve timing is a ...

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24-02-2022 дата публикации

VALVE TIMING ADJUSTING DEVICE

Номер: US20220056820A1
Принадлежит:

A valve timing adjusting device adjusts an opening/closing timing of a first valve driven by a rotation of a first camshaft and an opening/closing timing of a second valve driven by a rotation of a second camshaft. The valve timing adjusting device includes a first driving circuit controlling a first motor configured to generate a torque to shift a rotation phase of the first camshaft and a second driving circuit controlling a second motor configured to generate a torque to shift a rotation phase of the second camshaft. A first switching element of the first driving circuit operates at a switching frequency that is different from that of a second switching element of the second driving circuit. 1. A valve timing adjusting device configured to adjust an opening/closing timing of a first valve and an opening/closing timing of a second valve in an internal combustion engine , the first valve and the second valve being driven by a rotation of a first camshaft and a rotation of a second camshaft , respectively , the valve timing adjusting device comprising:a first motor configured to generate a torque to shift a rotation phase of the first camshaft;a first driving circuit configured to control the first motor to adjust the rotation phase of the first camshaft, the first driving circuit including a first switching element used for controlling the first motor;a second motor configured to generate a torque to shift a rotation phase of the second camshaft; anda second driving circuit configured to control the second motor to adjust the rotation phase of the second camshaft, the second driving circuit including a second switching element used for controlling the second motor, whereinthe first switching element operates at a switching frequency different from that of the second switching element.2. The valve timing adjusting device according to claim 1 , whereinthe first valve is an intake valve of the internal combustion engine, andthe second valve is an exhaust valve of the ...

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07-02-2019 дата публикации

SYSTEM AND METHOD FOR A VARIABLE CAM TIMING PHASE CONTROL APPARATUS WITH ISOLATOR

Номер: US20190040770A1
Автор: MOETAKEF Mohammad Ali
Принадлежит:

Methods and systems are provided for a phase control apparatus in a variable cam timing (VCT) system of an engine, the phase control apparatus having a locked configuration where a locking pin coupled to a first vane of the vane rotor is engaged with a locking pin recess in a cover plate of the phase control apparatus. In one example, the phase control apparatus includes a rubber or plastic isolator pad positioned in a recess in a wall adjacent to the first vane such that when the vane rotor is rotated to the locked configuration, the first vane contacts the isolator pad before it can strike the housing. The isolator pad serves to maintain the gap between the first vane and the housing, and also reduces the likelihood of other vanes of the vane rotor from striking the housing. 1. A phase control apparatus for a camshaft , comprising:a vane rotor positioned within a housing and including a first vane extending from a central hub;a first chamber formed between walls of the housing and the hub, the first vane arranged within the first chamber; andan isolator pad positioned within a recess of a first wall of the walls and between the first wall and a first sidewall of the first vane.2. The phase control apparatus of claim 1 , wherein the vane rotor includes a second vane separated from the first vane and arranged within a second chamber of the housing claim 1 , the second chamber spaced away from the first chamber claim 1 , and wherein only the first vane includes a locking pin adapted to lock rotation of the vane rotor within the housing.3. The phase control apparatus of claim 1 , wherein the first wall includes a planar claim 1 , first section arranged adjacent to an angled claim 1 , second section depressed inward claim 1 , into the housing claim 1 , from the first section claim 1 , wherein the first section is positioned closer to the hub than the second section and wherein only the first section includes the recess.4. The phase control apparatus of claim 1 , ...

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07-02-2019 дата публикации

Camshaft adjuster comprising a spring

Номер: US20190040771A1
Автор: Ali Bayrakdar
Принадлежит: Schaeffler Technologies AG and Co KG

A camshaft adjuster, comprising a drive element and an output element, wherein the drive element can be rotated in relation to the output element within an angular range between an early and a late position. The camshaft adjuster also includes a spring configured to brace the drive element with the output element, wherein the spring is configured to rotate the drive element in relation to the output element into a desired position within the angular range and is further configured to angularly adjust from both an early position and a late position into a direction of the desired position.

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06-02-2020 дата публикации

Method for the Combined Identification of Phase Differences of the Inlet Valve Stroke and of the Outlet Valve Stroke

Номер: US20200040830A1
Автор: Braun Tobias
Принадлежит: CPT Group GmbH

Various embodiments include a method for identifying valve stroke phase differences during operation comprising: measuring dynamic pressure oscillations in the air intake tract; generating a corresponding signal; acquiring a crankshaft phase angle; acquiring the phase position and the amplitude of a signal frequency of the oscillations based on the pressure oscillation using discrete Fourier transformation; acquiring a line of an equal phase position and of equal amplitude of the signal frequency reflecting the inlet and the outlet stroke phase difference using reference lines; acquiring a common intersection point of a line of equal phase position and a line of equal amplitude by projection into a common plane; and determining the stroke phase differences and from the common intersection point. 1. A method for the combined identification of an inlet valve stroke phase difference and of an outlet valve stroke phase difference of a cylinder of a series-production internal combustion engine during operation , the method comprising:measuring dynamic pressure oscillations, assignable to the cylinder, of the intake air in the air intake tract of the respective series-production internal combustion engine during operation;generating a corresponding pressure oscillation signal based on the measured oscillation;acquiring a crankshaft phase angle signal corresponding to the measured oscillations;acquiring the phase position and the amplitude of a respectively selected signal frequency of the measured pressure oscillations in relation to the crankshaft phase angle signal based on the pressure oscillation signal, using discrete Fourier transformation;acquiring, on the basis of the acquired phase position and amplitude of the respective selected signal frequency, in each case a line of an equal phase position and of equal amplitude of the respectively same signal frequency, the line reflecting the inlet valve stroke phase difference and the outlet valve stroke phase difference, ...

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15-02-2018 дата публикации

CAMSHAFT ADJUSTER

Номер: US20180045087A1
Принадлежит: Schaeffler Technologies AG & Co.KG

A camshaft adjuster including a stator, a rotor and a pressure medium supply, at least one chamber being formed on the stator, which is divided into two working chambers by at least one vane formed on the rotor or rotatably fixedly connected to the rotor is provided. A pressure medium is applicable to each of the two working chambers via the pressure medium supply in such a way that a pressure of the pressure medium may be increased in each of the working chambers to the extent that the pressure increase results in a rotation of the rotor. A switchable valve is formed in the vane of the rotor, which, in a first switching position of the valve, allows a flow of the pressure medium from a first working chamber through the vane into a second working chamber, in a second switching position the valve hydraulically separating the working chambers from each other. A locking element, which fixes the vane in a defined position with respect to the chamber, is designed to control an inflow or outflow of the pressure medium into or out of a working chamber. The pressure medium supply includes an oil pump, a supply line connecting the oil pump to at least one of the working chambers and a hydraulic accumulator, which differs from the oil pump and the supply line. 110-. (canceled)11. A camshaft adjuster comprising:a stator;a rotor;a pressure medium supply;at least one chamber being formed on the stator, the at least one chamber being divided into two working chambers by at least one vane formed on the rotor or rotatably fixedly connected to the rotor;a pressure medium being applicable to each of the two working chambers via the pressure medium supply in such a way that a pressure of the pressure medium in a particular working chamber of the two working chambers is increasable so that a pressure increase results in a rotation of the rotor;a switchable valve being formed in the rotor, the switchable valve, in a first switching position of the valve, permitting the pressure medium ...

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08-05-2014 дата публикации

Camshaft phaser with centrally located lock pin valve spool

Номер: US20140123920A1
Принадлежит: Delphi Technologies Inc

A camshaft phaser includes a stator having lobes and a rotor disposed within the stator having vanes interspersed with the lobes. A lock pin disposed within one of the rotor and the stator selectively engages a seat for preventing relative rotation between the rotor and the stator when the lock pin is engaged with the seat. A bolt extends coaxially through the rotor and the stator to attach the camshaft phaser to a camshaft. A valve spool in the bolt controls the flow of oil to and from the lock pin. The bolt includes a supply drilling extending therethrough to supply pressurized oil to the valve spool.

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03-03-2022 дата публикации

CONTROL VALVE ASSEMBLY OF A VARIABLE CAM TIMING PHASER

Номер: US20220065140A1
Принадлежит:

A control valve assembly of a variable cam timing phaser of a variable cam timing system, with the variable cam timing phaser including a housing and a rotor, and with the variable cam timing system including a camshaft, includes a valve housing extending along an axis. The valve housing includes a threaded portion adapted to engage the camshaft, and a body portion spaced axially from the threaded portion. The body portion defines a body interior. The control valve assembly also includes a piston disposed in the body interior and moveable along the axis between a first position and a second position. The control valve assembly further includes a cap removably coupled to the body portion of the valve housing. The cap includes a torque driving element configured to be received by a tool for transmitting torque from the tool for fixing the cap to the body portion.

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03-03-2022 дата публикации

Apparatus and Method for Controlling a Cam

Номер: US20220065141A1
Принадлежит: Vitesco Technologies GmbH

Various embodiments of the teachings herein include a method for controlling a cam using an ECU (electronic control unit) comprising: learning a holding region in which linearity is not ensured by increasing or decreasing a PWM signal while the cam maintains a holding state; based on the results of the learning, generating a final PWM signal; and transmitting the final PWM signal to an oil control valve. The final PWM signal comprises a sum of a minimum PWM signal for the cam to leave the holding region and a control PWM signal for the cam to reach a desired position. 1. A method for controlling a cam using an ECU (electronic control unit) , the method comprising:learning a holding region in which linearity is not ensured by increasing or decreasing a PWM signal while the cam maintains a holding state;based on the results of the learning, generating a final PWM signal;wherein the final PWM signal comprises a sum of a minimum PWM signal for the cam to leave the holding region and a control PWM signal for the cam to reach a desired position; andtransmitting the final PWM signal to an oil control valve.2. A method for controlling a cam according to claim 1 , further comprising starting the learning while the cam is operating normally claim 1 , based on detection of a phase of the cam using a cam position sensor.3. A method for controlling a cam according to claim 1 , wherein learning the holding region comprises:increasing the PWM signal if the cam is positioned in a target area;halting the increase of the PWM signal at an instant in which the position of the cam changes whilst increasing the PWM signal, and storing the PWM signal, the increase of which has been halted, as a holding advance region among the engine conditions;decreasing the PWM signal in the holding advance region;halting the decrease of the PWM signal at an instant the position of the cam changes whilst decreasing the PWM signal, and storing the PWM signal, the decrease of which has been halted, as a ...

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26-02-2015 дата публикации

VALVE TIMING CONTROL APPARATUS

Номер: US20150053156A1
Принадлежит:

A valve timing control apparatus includes: a rear plate; a housing fixed to the rear plate; and a vane rotor which is able to rotate relative to the housing. The vane rotor includes a rotor and a vane extending from the rotor outward in a radial direction to divide an oil pressure chamber of the housing into an advance chamber and a retard chamber. The vane has an axial end surface adjacent to the rear plate and a radially outer surface. A first chamfer part is defined at a connection between the axial end surface and the radially outer surface of the vane so as to reduce a surface pressure applied from the rear plate to the vane. 1. A valve timing control apparatus that controls a rotation phase between a driving shaft and a driven shaft of an internal combustion engine so as to control opening-and-closing timing of an intake valve or an exhaust valve which is driven to open or close by the driven shaft , the valve timing control apparatus comprising:a rear plate rotated by a driving force transmitted from the driving shaft;a housing fixed to the rear plate to be opposite from the driven shaft through the rear plate in a thickness direction of the rear plate, an oil pressure chamber being defined inside the housing; a rotor having a cylindrical shape and coaxially fixed to the driven shaft, and', 'a vane extending from the rotor outward in a radial direction to divide the oil pressure chamber of the housing into an advance chamber and a retard chamber, the vane having an axial end surface adjacent to the rear plate and a radially outer surface; and, 'a vane rotor which is able to rotate relative to the housing, the vane rotor having'}a first chamfer part defined at a connection between the axial end surface and the radially outer surface of the vane so as to reduce a contact pressure applied from the rear plate to the vane.2. The valve timing control apparatus according to claim 1 , further comprising:a first seal component arranged at the radially outer surface of ...

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26-02-2015 дата публикации

METHOD AND APPARATUS FOR WINDING A RETURN SPRING WITH A TWO PIECE ROTOR FOR A CAM PHASER

Номер: US20150053157A1
Принадлежит:

A camshaft phaser, including: a drive sprocket; a stator; a rotor at least partially rotatable with the stator; a rotor extension fixedly connected to the rotor, having a slot at at least one outer circumferential position; a spring for biasing the rotor relative to the stator, having a first and a second end, the first end secured in the slot in the rotor extension and the second end secured on the stator. 1. A camshaft phaser comprising;a drive sprocket arranged to receive torque;a stator non-rotatably connected to the drive sprocket;a cover plate non-rotatably connected to the stator, having at least a first and a second post at a front face of the cover plate;a rotor at least partially rotatable with respect to the stator and cover plate;a rotor plate non-rotatably connected to the rotor, the rotor plate having at least one slot at at least one circumferential position and at least one coupling feature for rotating the rotor plate;a return spring for biasing the rotor within the stator, the return spring having a first end and a second end;the first end of the spring secured into the slot;the second end of the spring secured on the first of the posts; andthe spring wrapped around at least a portion of the circumferential surface of the rotor plate.2. The phaser of claim 1 , wherein the at least two posts are fasteners used to non-rotatably connect the cover plate to the stator.3. The phaser of claim 2 , wherein the spring extends from the first post around an outer surface of the second post prior to wrapping around the rotor plate.4. The phaser of claim 1 , wherein the coupling feature is comprised of at least two bolt holes for bolts extending through the phaser and securing the phaser to a camshaft of an engine.5. A method for assembling a return spring to a predetermined torque onto a camshaft phaser assembly claim 1 , the method comprising the steps of:fixing a first end of the return spring to a slot in a rotor extension;fixing a second end of the return ...

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14-02-2019 дата публикации

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

Номер: US20190048762A1
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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14-02-2019 дата публикации

Timing drive tensioner assembly with pre-load and method

Номер: US20190048764A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A tensioner assembly for an engine timing drive includes a tensioner with a tensioner body having a fastener opening and defining a cavity with a plunger opening. A plunger is disposed in the cavity and a removable pin restrains the plunger in the cavity. The plunger is configured to be biased out of the plunger opening when the pin is removed. A protuberance extends outward from the tensioner body and is adapted to receive an applied torque. The tensioner body is configured to pivot about a center axis of the fastener opening in response to a predetermined torque applied to the protuberance. A method of assembling an engine timing drive includes applying a predetermined torque to a protuberance of a tensioner that is pivotably mounted to a cylinder block to rotate the tensioner toward a rotatable device such that the tensioner applies a predetermined load to the rotatable device.

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14-02-2019 дата публикации

CAMSHAFT ADJUSTING SYSTEM WITH MEANS FOR CATCHING HYDRAULIC FLUID DRAINING FROM A VALVE IN ORDER TO DIRECTLY RECIRCULATE THE FLUID INTO THE CAMSHAFT ADJUSTER

Номер: US20190048765A1
Автор: Boese Olaf, KRAMER Stefan
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

The invention relates to a camshaft adjusting system () for an internal combustion engine of a motor vehicle, including a hydraulic camshaft adjuster () which has a stator (), a rotor () that is rotatably mounted in the stator (), and a hydraulic control system () that has a valve (). The rotor () has at least one vane which protrudes into a pressure chamber formed between the rotor () and the stator () such that the pressure chamber is divided into two sub-chambers, each of which interacts with the hydraulic control system () such that a hydraulic pressure ratio is established between the two sub-chambers, said ratio specifying a relative rotational position between the rotor () and the stator (), and is adjusted on the basis of the position of the valve (). The camshaft adjusting system also includes an actuator () which is arranged adjacently in the axial direction of the camshaft adjuster () and which acts on the valve () for adjusting purposes. A hydraulic fluid section () is arranged on an actuator () face facing the camshaft adjuster (), with this hydraulic fluid section () being designed to deflect a flow of hydraulic fluid exiting the valve () into the surroundings of the camshaft adjuster () back into the camshaft adjuster () in an operational state. 1. A camshaft adjusting system for an internal combustion engine of a motor vehicle , the camshaft adjusting system comprising: a stator,', 'a rotor that is rotatably mounted in the stator,', 'a hydraulic control system that comprises a valve,', 'a pressure chamber formed between the rotor and the stator, and', 'at least one vane on the rotor extends into the pressure chamber such that said pressure chamber is divided into two sub-chambers, each of which interacts with the hydraulic control system such that a hydraulic pressure ratio is established between the two sub-chambers, said ratio specifying a relative rotational position between the rotor and the stator and is adjusted based on a position of the valve ...

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25-02-2016 дата публикации

Arrangement of a volume accumulator in a camshaft adjuster

Номер: US20160053640A1
Принадлежит: Schaeffler Technologies AG and Co KG

A camshaft adjuster ( 4 ) with a stator ( 20 ) that has an outer part ( 50 ) for concentrically holding a rotor ( 22 ) with vanes ( 34 ) arranged around the rotor ( 22 ) and a segment ( 52 ) projecting from the outer part ( 50 ) for engaging between two vanes ( 34 ) of the rotor ( 22 ), in order to form, together with the two vanes ( 22 ), pressure chambers ( 44 ) of the camshaft adjuster ( 4 ). A cover ( 1564, 156 ) is located on an axial side of the ring-shaped outer part, and the cover includes a cavity for holding hydraulic fluid from the pressure chambers ( 44 ). The segment ( 52 ) may also have a cavity ( 70 ) for holding a hydraulic fluid from the pressure chambers ( 44 ).

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13-02-2020 дата публикации

Installation structure of oil control valve unit and vehicle

Номер: US20200049032A1
Автор: Hisashi Ozeki
Принадлежит: Suzuki Motor Corp

There is provided an installation structure of an oil control valve unit configured to control a hydraulic pressure in a variable valve timing device of an engine by a control valve supported by a valve housing. The engine is formed with an installation surface on which the valve housing is installed. The valve housing is installed on the installation surface by a plurality of bolts. Two bolts of the plurality of bolts are attached at facing positions across a center of the valve housing in a direction along a cylinder axial direction of the engine.

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22-02-2018 дата публикации

Valve opening and closing timing control apparatus

Номер: US20180051599A1
Принадлежит: Aisin Seiki Co Ltd

A valve opening and closing timing control apparatus includes a drive-side rotational body, a driven-side rotational body, an intermediate lock mechanism which selectively switches between a lock state where displacement of a relative rotational phase of the driven-side rotational body relative to the drive-side rotational body is restrained in an intermediate lock phase and an unlock state where the lock state is released, and an electromagnetic valve. At a time of predetermined operation of an internal combustion engine, a value of the drive current is set as a boundary current, and the value of the drive current to be set as the boundary current differs, by a predetermined value, from a value of the drive current at a time when the unlock state was switched to the lock state due to the change of the drive current.

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05-03-2015 дата публикации

VARIABLE VALVE TIMING CONTROL DEVICE

Номер: US20150059669A1
Принадлежит:

A variable valve timing control device includes a driving side rotation member, a driven side rotation member, a control valve controlling a supply and draining of an operation fluid to and from a fluid pressure chamber to change a relative rotational phase of the driven side rotation member relative to the driving side rotation member, an intermediate member positioned inwardly of the driven side rotation member between the driven side rotation member and a camshaft, the intermediate member including the control valve inwardly thereof; and a torsion spring retained by the driving side rotation member and the intermediate member to bias the driving side rotation member and the driven side rotation member either in a first rotation direction or a second rotation direction. 1. A variable valve timing control device , comprising:a driving side rotation member configured to synchronously rotate with a driving shaft of an internal combustion engine;a driven side rotation member provided inwardly of the driving side rotation member to be coaxial with the driving side rotation member, the driven side rotation member integrally rotating with a camshaft for opening and closing a valve of the internal combustion engine;a fluid pressure chamber defined between the driving side rotation member and the driven side rotation member;a control valve controlling a supply and draining of an operation fluid to and from the fluid pressure chamber to change a relative rotational phase of the driven side rotation member relative to the driving side rotation member between a most advanced angle phase and a most retarded angle phase;an intermediate member being positioned inwardly of the driven side rotation member between the driven side rotation member and the camshaft, the intermediate member including the control valve inwardly thereof; anda torsion spring being retained by the driving side rotation member and the intermediate member to bias the driving side rotation member and the ...

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05-03-2015 дата публикации

VARIABLE VALVE TIMING CONTROL DEVICE

Номер: US20150059670A1
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A variable valve timing control device includes a driving side rotation member, a driven side rotation member, a fluid pressure chamber, a first flow path and a second flow path allowing a flow of an operation fluid into and out of the fluid pressure chamber, an intermediate member being provided between an inner circumferential surface of the driven side rotation member and an outer circumferential surface of a camshaft, and a contact portion where the intermediate member and the driven side rotation member come in contact with each other at a position between the first flow path and the second flow path when mounting the intermediate member to the camshaft. 1. A variable valve timing control device , comprising:a driving side rotation member configured to synchronously rotate with a driving shaft of an internal combustion engine;a driven side rotation member provided inwardly of the driving side rotation member to be coaxial with the driving side rotation member, the driven side rotation member integrally rotating with a camshaft for opening and closing a valve of the internal combustion engine;a fluid pressure chamber defined between the driving side rotation member and the driven side rotation member;a first flow path and a second flow path allowing a flow of an operation fluid into and out of the fluid pressure chamber to change a relative rotational phase of the driven side rotation member relative to the driving side rotation member between a most advanced angle phase and a most retarded angle phase;an intermediate member being provided between an inner circumferential surface of the driven side rotation member and an outer circumferential surface of the camshaft, the intermediate member connecting the driven side rotation member and the camshaft; anda contact portion where the intermediate member and the driven side rotation member come in contact with each other at a position between the first flow path and the second flow path when mounting the ...

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