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    Latch assembly and valvetrain comprising same
    1.
    发明授权
    Latch assembly and valvetrain comprising same 有权

    公开(公告)号：US12180865B2

    公开(公告)日：2024-12-31

    申请号：US18262153

    申请日：2022-01-20

    Applicant: Eaton Intelligent Power Limited

    Inventor： Nikhil Saggam ,  Shahnawaz Khan ,  Saurabh Patil ,  Matthew A. Vance

    IPC: F01L1/46 ,  F01L1/26 ,  F01L13/00 ,  F01L13/06 ,  F01L13/08 ,  F01L1/18

    Abstract: A latch assembly and valvetrain therewith can comprise a stationary housing comprising a plunger cavity, a plunger in the plunger cavity, and a controllable upper latch member. The plunger can comprise a control end, a plunger body, a spigot body and a spigot end. The controllable upper latch member can be configured to selectively act on the control end and can be configured to switch between locking the plunger from moving along a first axis and unlocking the plunger to slide in the plunger cavity along the first axis. A slidable transverse latch member or rotatable upper castellation body can act as the controllable upper latch member. While a valve bridge and rocker arm can be movable, the housing for the latch assembly can be stationary.

    Systems and methods for providing compression release with continuous variable valve lift
    2.
    发明授权
    Systems and methods for providing compression release with continuous variable valve lift 有权

    公开(公告)号：US11473459B2

    公开(公告)日：2022-10-18

    申请号：US16922638

    申请日：2020-07-07

    Applicant: Ford Global Technologies, LLC

    Inventor： Brad Alan VanDerWege ,  Michael Shelby

    IPC: F01L13/08 ,  F02N11/08 ,  F01L13/00 ,  F01L1/08 ,  F01L9/10

    Abstract: Methods and systems are provided for providing compression release during a stop/start event in an engine. In one example, a method includes: responsive to a request for a stop/start event in an engine with a continuously variable valve lift (CVVL) system including a compression release hydraulic valve actuator coupled to a valve of a first cylinder, determining a desired stop position of the engine; and prior to restarting the engine during the stop/start event, adjusting the compression release hydraulic valve actuator to open the valve during a compression stroke of the first cylinder. In this way, an amount of torque used to restart the engine may be reduced.

    COMPRESSION RELEASE MECHANISM AND INTERNAL COMBUSTION ENGINE INCLUDING THE SAME
    3.
    发明申请
    COMPRESSION RELEASE MECHANISM AND INTERNAL COMBUSTION ENGINE INCLUDING THE SAME 有权

    公开(公告)号：US20220268184A1

    公开(公告)日：2022-08-25

    申请号：US17667249

    申请日：2022-02-08

    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA

    Inventor： Yoshinori MATSUOKA

    IPC: F01L13/08 ,  F01L1/047

    Abstract: A compression release mechanism including a camshaft, a cam provided on the camshaft and protruding outward in a radial direction of the camshaft, a lever, of which a portion is disposed in the camshaft, a support shaft supporting the lever such that the lever is swingable between a first position and a second position relative to the camshaft, and a spring attached to the camshaft, to urge the lever toward the first position. The lever includes a cam portion configured to protrude out from the camshaft with the lever at the first position, a centrifugal weight for moving the lever toward the second position in accordance with rotation of the camshaft, and an abutment portion configured to be in abutment with an inner peripheral surface of the camshaft with the lever at the first position, and be located away from the inner peripheral surface with the lever at the second position.

    Engine decompression device and engine
    4.
    发明授权
    Engine decompression device and engine 有权

    公开(公告)号：US11384725B2

    公开(公告)日：2022-07-12

    申请号：US17253399

    申请日：2018-07-05

    Applicant: HONDA MOTOR CO., LTD.

    Inventor： Naotoshi Nio ,  Kota Tokubi ,  Kentaro Sugimura

    IPC: F02N9/00 ,  F02N19/00 ,  F01L1/047 ,  F01L13/08 ,  F01L1/02 ,  F01L1/14 ,  F01L1/18 ,  F01L1/46

    Abstract: A decompression shaft (56) of a decompression device (50) includes an engagement pin (53) that is guided by a guide groove (51a) formed in a decompression weight (51), a decompression cam (54) that is provided on one cam surface of an intake valve cam (25c) and an exhaust valve cam (25b) so as to advance and retreat, and a connection portion (55) that connects the engagement pin (53) and the decompression cam (54). The decompression weight (51) is formed with a rotation restricting groove (51e) that restricts rotation of the decompression shaft (56) when a force acts in a direction in which the decompression cam (54) moves on the decompression shaft (56) from an advanced position to a retracted position when an engine (E) is stopped and that is continuous with the guide groove (51a).

    Valve bridge systems comprising valve bridge guide
    5.
    发明授权
    Valve bridge systems comprising valve bridge guide 有权

    公开(公告)号：US11053819B2

    公开(公告)日：2021-07-06

    申请号：US15929504

    申请日：2020-05-06

    Applicant: Jacobs Vehicle Systems, Inc.

    Inventor： Steven Benn ,  Dong Yang ,  Gabriel S. Roberts ,  Bruce A. Swanbon ,  Justin D. Baltrucki ,  John Mandell

    IPC: F01L1/26 ,  F01L1/12 ,  F01L13/08 ,  F01L13/06

    Abstract: A valve bridge system comprises a valve bridge configured to extend between at least two engine valves of an internal combustion engine. In one embodiment, a valve bridge guide is operatively connected to the valve bridge and configured to extend between at least two valve springs respectively corresponding to the at least two engine valves, the valve bridge guide defining a surface conforming to a valve spring of the at least two valve springs. In another embodiment, the valve bridge guide may comprise at least a first member maintained in a first fixed position relative to and at a predetermined distance from the valve bridge. In both embodiments, the valve bridge guide is configured to avoid contact with the valve bridge in a controlled state, but to permit contact with valve bridge to resist uncontrolled movement of the valve bridge.

    DECOMPRESSION DEVICE FOR INTERNAL COMBUSTION ENGINE
    7.
    发明申请
    DECOMPRESSION DEVICE FOR INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20190301316A1

    公开(公告)日：2019-10-03

    申请号：US16282985

    申请日：2019-02-22

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Manabu TATENO

    IPC: F01L13/08 ,  F01L1/18

    Abstract: A decompression pin is inserted into a swing range of an end portion of a rocker arm, on a side which is supported by a lash adjuster, when the rocker arm has been inclined toward a direction in which a valve is opened. The decompression pin comes into contact with the end portion of the rocker arm 4 when the rocker arm is inclined toward a direction in which the valve is closed, and thereby restricts the rocker arm from returning to a position at which the valve is completely closed, and the valve becomes in a slightly opened state even in a compression stroke.

    VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR ASSEMBLING VALVE TIMING CONTROL DEVICE
    8.
    发明申请
    VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR ASSEMBLING VALVE TIMING CONTROL DEVICE 审中-公开

    公开(公告)号：US20190284968A1

    公开(公告)日：2019-09-19

    申请号：US16318668

    申请日：2017-07-11

    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

    Inventor： Shinji URAKAWA

    IPC: F01L1/344 ,  F01L13/08

    Abstract: A valve timing control device includes: a first clearance being formed between a radial other side of the outer circumference surface of the first shaft portion, and a confronting end surface of a radial other side of the inner circumference surface of the sliding hole, a second clearance being formed between an outer circumference of the second shaft portion on a side of the first clearance, and a radial other side of the inner circumference surface of the lock recessed portion, a stepped surface being formed at a connection portion between the first shaft portion and the second shaft portion, and having a stepped width in a radial direction, and a width of the second clearance being substantially identical to the width of the stepped surface.

    METHOD FOR STARTING AN INTERNAL COMBUSTION ENGINE
    9.
    发明申请
    METHOD FOR STARTING AN INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20190017459A1

    公开(公告)日：2019-01-17

    申请号：US16016210

    申请日：2018-06-22

    Applicant: MAN Truck & Bus AG

    Inventor： Werner Kübler

    IPC: F02D41/30 ,  F01L13/08 ,  F02D33/00 ,  F02N19/00

    Abstract: A method for starting an internal combustion engine, having which has at least one cylinder, a controllable starter and a controllable fuel injection device, at least one cylinder, in particular every cylinder, of the internal combustion engine being assigned at least one decompression valve for reducing the compression which takes place during the operation of the internal combustion engine in the case of a compression stroke. A defined starting rotational speed is predetermined in the control unit, that, in the case of a controlled activation of the starter, the at least one decompression valve is opened in an automatically controlled manner by means of a control unit, and that the control unit detects the current rotational speed of the internal combustion engine and, when the defined starting rotational speed is reached, closes the at least one decompression valve and activates the fuel injection device.

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