System and method for controlling hydraulic pressure of an automatic
transmission for vehicles
    1.
    发明授权
    System and method for controlling hydraulic pressure of an automatic transmission for vehicles 失效
    用于控制车辆自动变速器液压的系统和方法

    公开(公告)号:US5749806A

    公开(公告)日:1998-05-12

    申请号:US656436

    申请日:1996-05-31

    摘要: A hydraulic control system of an automatic transmission for a vehicle includes a line pressure control part for converting line pressure from a hydraulic pump into constant hydraulic pressure. A torque pressure generating part converts the constant hydraulic pressure fed from the line pressure control part via a manual valve into torque pressure in accordance with the operation of a transmission control unit. A torque pressure switching part switches the supply direction of the torque pressure fed from the torque pressure generating parts in accordance with the operation of the transmission control unit. A shift part primarily feeds the torque pressure fed from the torque pressure switching part to friction members and secondly feeds drive pressure to the friction members after converting the line pressure fed from the line pressure control means into drive pressure.

    摘要翻译: 用于车辆的自动变速器的液压控制系统包括用于将来自液压泵的管路压力转换成恒定液压的管路压力控制部。 扭矩压力产生部件根据变速器控制单元的操作,将从管路压力控制部件经由手动阀进给的恒定液压转换成转矩压力。 扭矩压力切换部根据变速器控制单元的动作来切换从扭矩压力产生部输送的转矩压力的供给方向。 变速部分主要将从扭矩压力切换部分供给的转矩压力馈送到摩擦部件,并且在将从管路压力控制装置供给的管路压力转换成驱动压力之后,将驱动压力二次供给到摩擦部件。