OIL PRESSURE CONTROLLER FOR AUTOMATIC TRANSMISSION
    3.
    发明公开
    OIL PRESSURE CONTROLLER FOR AUTOMATIC TRANSMISSION 审中-公开
    ÖLDRUCKSTEUERUNGFÜREIN AUTOMATIKGETRIEBE

    公开(公告)号:EP3045779A4

    公开(公告)日:2017-05-31

    申请号:EP14843773

    申请日:2014-08-27

    申请人: JATCO LTD

    IPC分类号: F16H61/04 F16D48/06 F16H61/00

    摘要: Oil pressure controller for an automatic transmission produces a pre-charge shelf pressure supplied to a starter clutch by rapidly decreasing a command hydraulic pressure to the starter clutch after temporarily rapidly increasing the command hydraulic pressure, also produces a capacity adjustment pressure (Pb1 or Pb2) of the starter clutch by gradually increasing the hydraulic pressure from a decrease point of the pre-charge shelf pressure (Pa), when a selecting operation is made from N-range to D-range. By changing capacity adjustment pressure (Pb1 or Pb2) according to brake-operating/nonoperating state, capacity adjustment pressure (Pb1) in the brake-nonoperating state is set to be higher than capacity adjustment pressure (Pb2) in the brake-operating state by an offset hydraulic pressure amount. With this, when the selecting operation is made from N-range to D-range, in the brake-operating state, selection shock of the starter clutch can be reduced. In the brake-nonoperating state, good vehicle startability can be achieved.

    摘要翻译: 用于自动变速器的油压控制器通过在临时快速增加指令液压之后快速降低至起动离合器的指令液压来产生供应至起动器离合器的预充载架压,并且还产生容量调节压力(Pb1或Pb2) 当从N档到D档进行选择操作时,通过从预充电搁架压力(Pa)的减小点逐渐增加液压来启动起动离合器。 通过根据制动操作/非操作状态改变容量调节压力(Pb1或Pb2),制动非操作状态下的容量调节压力(Pb1)被设定为高于制动操作状态下的容量调节压力(Pb2) 偏移液压量。 由此,在从N档向D档进行选档操作时,在制动操作状态下,能够降低起动离合器的选档冲击。 在非制动状态下,可以实现良好的车辆启动性。