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11 条记录 (耗时 0.024 秒)

    System and method of adjusting actuation timing of valves in a piston engine
    2.
    发明授权
    System and method of adjusting actuation timing of valves in a piston engine 有权

    公开(公告)号：US10329969B2

    公开(公告)日：2019-06-25

    申请号：US15522529

    申请日：2015-10-23

    申请人： Jacobs Vehicle Systems, Inc.

    发明人： Roger T. Simpson ,  Jacob M. Moore ,  Alan Steines ,  John A. Schwoerer

    IPC分类号： F01L9/02 ,  F01L9/04

    摘要： A system that provides adjustable actuation timing of one or more valve(s) (16) in a piston engine includes a position sensor (12) and a variable valve actuation assembly (10). The valve(s) (16) can be intake and/or exhaust valves in an internal combustion engine of an automobile. The position sensor (12) takes position readings of the valve(s) (16) as the valve(s) (16) actuate in the piston engine. The variable valve actuation assembly (10) controls actuation timing of the valve(s) (16). Actuation timing of the valve(s) (16) is adjustable based, in part or more, upon one or more position reading(s) of the position sensor (12). The variable valve actuation assembly (10) can be a lost motion assembly (10).

    Lost motion variable valve actuation systems and methods
    3.
    发明授权
    Lost motion variable valve actuation systems and methods 有权

    公开(公告)号：US11230951B2

    公开(公告)日：2022-01-25

    申请号：US16566832

    申请日：2019-09-10

    申请人： Jacobs Vehicle Systems, Inc.

    发明人： John A. Schwoerer ,  G. Michael Gron, Jr. ,  Jacob M. Moore ,  Thomas P. Howell

    IPC分类号： F01L9/14 ,  F01L13/00 ,  F01L1/344 ,  F01L9/12

    摘要： A compact, modular, lost motion variable valve actuation assembly includes a dry start hydraulic circuit to enable quick priming of a lost motion master-slave circuit from a dry start reservoir to the master piston chamber during engine start. Motion of the master piston on engine startup may draw in fluid from the dry start hydraulic circuit. The dry start components may be integrated into a compact modular rocker shaft pedestal package suitable for retrofit on existing engine head assemblies. The master piston may include a push tube interface that includes a deep push tube cavity and lubrication capabilities in the master piston that provides for improved wear, stability, easy installation and alignment. The slave piston may be provided with a valve catch to reduce valve closing velocity during cycles involving lost-motion.

    Systems and methods for IEGR using secondary intake valve motion and lost-motion reset
    4.
    发明授权
    Systems and methods for IEGR using secondary intake valve motion and lost-motion reset 有权

    公开(公告)号：US11149599B2

    公开(公告)日：2021-10-19

    申请号：US16364355

    申请日：2019-03-26

    申请人： Jacobs Vehicle Systems, Inc.

    发明人： Justin D. Baltrucki ,  John A. Schwoerer

    IPC分类号： F01L13/06 ,  F02D13/02 ,  F01L9/14 ,  F01L1/18 ,  F01L1/08

    摘要： Systems and methods for internal exhaust gas recirculation (iEGR) in internal combustion engines may utilize secondary intake valve lift events during an exhaust valve main event in lost motion valve actuation systems. The secondary intake valve lift event may occur at the beginning or end of the exhaust valve main event. Favorable intake valve lift profiles are obtained with the use of a reset component, which may perform a hydraulic reset on the lost motion component in order to ensure that the intake valve secondary lift event occurs optimally near the beginning of an exhaust valve main event. The reset component may be triggered using motion from an exhaust valvetrain, for example, by a triggering component such as a reset pad, on an exhaust rocker. The reset component may also be triggered on the basis of the intake rocker arm position, in which case a reset pad that is fixed to the engine head or fixed relative to the intake rocker motion may be used.

    Engine valve actuation with handoff control between cooperative valve actuation motions
    5.
    发明授权
    Engine valve actuation with handoff control between cooperative valve actuation motions 有权

    公开(公告)号：US11131222B2

    公开(公告)日：2021-09-28

    申请号：US17249090

    申请日：2021-02-19

    申请人： Jacobs Vehicle Systems, Inc.

    发明人： John A. Schwoerer ,  Justin D. Baltrucki

    IPC分类号： F01L1/34 ,  F01L13/00 ,  F01L13/06 ,  F01L1/04

    摘要： A valve actuation system comprises a first motion transfer mechanism operatively connected to a first valve actuation motion source and to the at least one engine valve, a second motion transfer mechanism operatively connected to a second valve actuation motion source; and a selectable coupling mechanism between the first and second motion transfer mechanisms. The coupling mechanism is operable in a first state where first valve actuation motions are conveyed to the at least one engine valve via the first motion transfer mechanism, and a second state where second valve actuation motions are additionally conveyed to the at least one engine valve via the second motion transfer mechanism, the coupling mechanism and the first motion transfer mechanism. During a handoff between the first and second valve actuation motions or vice versa, a difference in valve actuation velocities of the first and second valve actuation motions does not exceed a threshold.

    VARIABLE LOST MOTION VALVE ACTUATOR AND METHOD
    6.
    发明申请
    VARIABLE LOST MOTION VALVE ACTUATOR AND METHOD 审中-公开
    可变失速运动阀执行器和方法

    公开(公告)号：US20140311449A1

    公开(公告)日：2014-10-23

    申请号：US14323385

    申请日：2014-07-03

    申请人： Jacobs Vehicle Systems, Inc.

    发明人： Joesph M. Vorih ,  Jeffrey Mossberg ,  Richard Vanderpoel ,  Steven Ernest ,  Guy Paterson ,  John A. Schwoerer ,  Edward T. Leitkowski ,  Andrew Brzoska ,  Gheorghe Cosma

    IPC分类号： F01L13/06

    CPC分类号： F01L13/0015 ,  F01L1/053 ,  F01L1/08 ,  F01L1/185 ,  F01L1/2411 ,  F01L1/267 ,  F01L9/02 ,  F01L9/025 ,  F01L13/0005 ,  F01L13/06 ,  F01L13/085 ,  F01L2001/34446 ,  F01L2105/00 ,  F01L2800/01 ,  F01L2820/01 ,  F02D13/0234 ,  F02D41/0002 ,  F02D41/26 ,  F02D2041/001

    摘要： A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.

    摘要翻译： 公开了一种失速发动机气门致动系统和致动发动机气门的方法。 该系统可以包括气门机构元件，枢转杆，控制活塞和液压回路。 枢转杆可以包括用于接触控制活塞的第一端，用于将运动传递到阀杆的第二端和用于接触气门机构元件的装置。 可以通过改变控制活塞相对于枢转杆的位置来选择由系统提供的空动量。 可以通过将控制活塞与控制触发阀和一个或多个蓄能器液压连接来实现控制活塞位置的变化。 触发阀的启动释放液压流体，允许调节控制活塞位置。 还公开了用于限制阀座速度，在发动机起动时填充液压回路以及将控制活塞/杆机械地锁定在固定水平的阀致动的装置。