Automatic transmission control system having a neutral idle feature
    10.
    发明授权
    Automatic transmission control system having a neutral idle feature 失效
    具有中性空闲特征的自动变速器控制系统

    公开(公告)号:US06171211B2

    公开(公告)日:2001-01-09

    申请号:US09410918

    申请日:1999-10-01

    IPC分类号: F16H5970

    摘要: An electronically controlled automatic transmission hydraulic valve system for an automotive vehicle transmission having multiple forward-drive ratios and a reverse ratio. Clutch and brake means controls motion of gearing elements for establishing forward torque flow paths and a reverse torque flow path, the clutch and brake means including a reverse drive clutch and a forward drive clutch. Each clutch, when engaged, completes a torque flow path from a vehicle engine to torque input elements of the gearing. The forward clutch and reverse clutch each includes friction elements that are frictionally engaged by a pressure-actuated piston. Regulated pressure strokes each piston. An engagement valve system triggers normal forward clutch and reverse clutch operation during torque delivery and for establishing a neutral idle capability in both forward and reverse.

    摘要翻译: 一种用于机动车辆变速器的电子控制自动变速器液压阀系统,具有多个正向传动比和反向比。 离合器和制动装置控制齿轮元件的运动以建立正向扭矩流动路径和反向扭矩流动路径,离合器和制动装置包括反向驱动离合器和前进驱动离合器。 每个离合器在接合时完成从车辆发动机到扭矩输入元件的扭矩流动路径。 前进离合器和倒档离合器分别包括通过压力致动的活塞摩擦接合的摩擦元件。 每个活塞调节压力。 接合阀系统在转矩传递期间触发正常的前进离合器和倒档离合器操作,并且用于在前进和后退两者中建立中性空档能力。