Twin-clutch transmission system
    2.
    发明授权
    Twin-clutch transmission system 失效
    双离合器传动系统

    公开(公告)号:US06679134B2

    公开(公告)日:2004-01-20

    申请号:US10379797

    申请日:2003-03-06

    申请人: Hidetoshi Shigyo

    发明人: Hidetoshi Shigyo

    IPC分类号: F16H391

    摘要: A transmission system is comprised of a twin-clutch transmission which comprises a first clutch for selecting a first gear-ratio group and a second clutch for selecting a second gear-ratio group. A control unit for controlling the twin-clutch transmission is arranged to calculate an estimated engine revolution speed produced in the event that one of two gear ratios adjacent to the present gear ratio is selected by executing one of upshift and downshift, and to disengage one of the first and second clutches which is engaged to select the gear-ratio group including the other of the two gear ratios adjacent to the present gear ratio when the estimated engine revolution speed is out of a normal operation speed range.

    摘要翻译: 传动系统包括双离合器变速器,其包括用于选择第一变速比组的第一离合器和用于选择第二变速比组的第二离合器。 用于控制双离合器变速器的控制单元被布置成计算在通过执行升档和降挡之一来选择与当前齿轮比相邻的两个齿轮比中的一个中产生的估计的发动机转速,并且分离 第一离合器和第二离合器,当所估计的发动机转速超出正常运行速度范围时,所述第一和第二离合器选择包括与当前齿轮比相邻的两个齿轮比中的另一个的齿轮比组。

    System and method for controlling ignition timing for internal
combustion engine
    4.
    发明授权
    System and method for controlling ignition timing for internal combustion engine 失效
    内燃机点火正时控制系统及方法

    公开(公告)号:US4930477A

    公开(公告)日:1990-06-05

    申请号:US258685

    申请日:1988-10-17

    IPC分类号: F02P5/15

    CPC分类号: F02P5/1504 Y02T10/46

    摘要: A system and method for controlling an ignition timing for an internal combustion engine mounted in a vehicle are disclosed in which a limit value for the ignition timing value is provided so that a difference between a current ignition timing and a previous ignition timing is within the limit value and the limit value is set according to a magnitude of an engine acceleration. For example, when an abrupt engine acceleration occurs, the limit value is set to 15 degrees. When the engine is in a steady state (no abrupt acceleration from an idling condition), the limit value is set to four degrees. Therefore, no vehicle body shock occurs due to the abrupt change in an engine output torque caused by the abrupt change in the ignition timing and a response characteristic of a rise in the engine output torque during the abrupt acceleration can be assured.

    摘要翻译: 公开了一种用于控制安装在车辆中的内燃机的点火正时的系统和方法,其中提供了点火正时值的极限值,使得当前点火正时与先前点火正时之间的差值在极限内 值,并且根据发动机加速度的大小设定极限值。 例如,当发生急剧的发动机加速时,将极限值设定为15度。 当发动机处于稳定状态(没有从怠速状态突然加速)时,极限值设定为4度。 因此,由于点火正时突然变化引起的发动机输出转矩突然变化,并且可以确保突发加速期间的发动机输出转矩的上升的响应特性,所以不会发生车身冲击。