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141 条记录 (耗时 0.028 秒)

    Method and system to avoid piston-valve collision
    86.
    发明授权
    Method and system to avoid piston-valve collision 有权
    避免活塞阀碰撞的方法和系统

    公开(公告)号：US07178493B2

    公开(公告)日：2007-02-20

    申请号：US11177832

    申请日：2005-07-08

    申请人： Jun-Mo Kang ,  Chen-Fang Chang

    发明人： Jun-Mo Kang ,  Chen-Fang Chang

    IPC分类号： F01L1/34

    CPC分类号： F02D13/0253 ,  F01L1/16 ,  F01L1/34 ,  F01L9/02 ,  F01L9/04 ,  F01L2800/00 ,  F01L2800/16 ,  F01L2820/02 ,  Y02T10/18

    摘要： A method and system to avoid collision of piston and engine valves is provided. This facilitates use of a fully flexible variable valve actuation system over its operating range, without arbitrary constraints. Included is actuation control of the engine valve, determination of a crank angle at which to initiate engine valve opening, and determination of a desired valve lift, and, duration of valve open time. Opening profile for the engine valve is estimated. A first and a second crank angle are calculated, based upon the estimated opening profile. The crank angle to initiate engine valve opening is determined by adding a safety margin to the second crank angle. The method determines a maximum valve lift, given the duration of valve open time and an engine valve opening crank angle, and a minimum duration of valve open time, given a valve lift and an engine valve opening crank angle.

    摘要翻译： 提供了一种避免活塞和发动机气门碰撞的方法和系统。 这有助于在其工作范围内使用完全灵活的可变气门驱动系统，而无需任何约束。 包括发动机气门的致动控制，确定启动发动机气门打开时的曲轴角度，确定期望的气门升程以及阀打开时间的持续时间。 估计发动机气门的开启轮廓。 基于估计的开口轮廓来计算第一和第二曲柄角。 启动发动机气门打开的曲柄角是通过向第二曲柄角增加安全余量来确定的。 给定阀提升和发动机气门打开曲柄角，该方法确定给定阀打开时间的持续时间和发动机气门打开曲柄角以及阀打开时间的最小持续时间。

    METHOD AND SYSTEM TO AVOID PISTON-VALVE COLLISION
    87.
    发明申请
    METHOD AND SYSTEM TO AVOID PISTON-VALVE COLLISION 有权
    避免活塞阀碰撞的方法和系统

    公开(公告)号：US20070006832A1

    公开(公告)日：2007-01-11

    申请号：US11177832

    申请日：2005-07-08

    申请人： Jun-Mo Kang ,  Chen-Fang Chang

    发明人： Jun-Mo Kang ,  Chen-Fang Chang

    IPC分类号： F01L1/34

    CPC分类号： F02D13/0253 ,  F01L1/16 ,  F01L1/34 ,  F01L9/02 ,  F01L9/04 ,  F01L2800/00 ,  F01L2800/16 ,  F01L2820/02 ,  Y02T10/18

    摘要： A method and system to avoid collision of piston and engine valves is provided. This facilitates use of a fully flexible variable valve actuation system over its operating range, without arbitrary constraints. Included is actuation control of the engine valve, determination of a crank angle at which to initiate engine valve opening, and determination of a desired valve lift, and, duration of valve open time. Opening profile for the engine valve is estimated. A first and a second crank angle are calculated, based upon the estimated opening profile. The crank angle to initiate engine valve opening is determined by adding a safety margin to the second crank angle. The method determines a maximum valve lift, given the duration of valve open time and an engine valve opening crank angle, and a minimum duration of valve open time, given a valve lift and an engine valve opening crank angle.

    摘要翻译： 提供了一种避免活塞和发动机气门碰撞的方法和系统。 这有助于在其工作范围内使用完全灵活的可变气门驱动系统，而无需任何约束。 包括发动机气门的致动控制，确定启动发动机气门打开时的曲轴角度，确定期望的气门升程以及阀打开时间的持续时间。 估计发动机气门的开启轮廓。 基于估计的开口轮廓来计算第一和第二曲柄角。 启动发动机气门打开的曲柄角是通过向第二曲柄角增加安全余量来确定的。 给定阀提升和发动机气门打开曲柄角，该方法确定给定阀打开时间的持续时间和发动机气门打开曲柄角以及阀打开时间的最小持续时间。

    HCCI mode switching control system and method
    90.
    发明授权
    HCCI mode switching control system and method 有权
    HCCI模式切换控制系统及方法

    公开(公告)号：US08316818B2

    公开(公告)日：2012-11-27

    申请号：US12493554

    申请日：2009-06-29

    申请人： Vijay Ramappan ,  Peter Kafarnik ,  Jun-Mo Kang

    发明人： Vijay Ramappan ,  Peter Kafarnik ,  Jun-Mo Kang

    IPC分类号： F02B17/00 ,  F02B5/00

    CPC分类号： F02D41/3035 ,  F02D41/3064 ,  Y02T10/128

    摘要： A control system and method for operating an engine includes a transition module that commands engine control from a first homogeneous charge compression ignition (HCCI) mode to a second HCCI mode. The control system also includes a fuel delivery module that operates the engine in a stratified charge operation mode after commanding engine control from the first HCCI mode to the second HCCI mode and discontinues the stratified charge operation thereafter.

    摘要翻译： 用于操作发动机的控制系统和方法包括将发动机控制从第一均质充气压缩点火（HCCI）模式命令到第二HCCI模式的过渡模块。 控制系统还包括燃料输送模块，其在从第一HCCI模式命令到第二HCCI模式的发动机控制之后以分层充电操作模式操作发动机，并且此后不再进行分层充电操作。