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    • 8. 发明授权
    • Line pressure control unit of automatic transmission
    • 自动变速器线路压力控制单元
    • US06398693B1
    • 2002-06-04
    • US09672693
    • 2000-09-29
    • Yasutaka Kawamura
    • Yasutaka Kawamura
    • F16H6126
    • F16H61/0021F16H2061/0087Y10T477/69395
    • In a line pressure control unit of an automatic transmission for a vehicle which performs feedback control of a line pressure of an automatic transmission, comprising: a line pressure solenoid valve(14) which adjusts a line pressure, a sensor which detects a real line pressure and a microprocessor (17) which controls the line pressure solenoid valve. The microprocessor is programmed to: calculate a required line pressure(PREQ) according to the running state of the vehicle, calculate a target line pressure(PREQ*) from the required line pressure(PREQ), the target line pressure(PREQ*) being modified by a safety factor(S1) for line pressure correction, and calculate a line pressure difference(&Dgr;PERR) between the required line pressure(PREQ) and the real line pressure(PL) and add a feedback control amount(&Dgr;PFB) according to the line pressure difference to the target line pressure to calculate a command line pressure(PL*) control the line pressure valve based on the command line pressure(PL*).
    • 在进行自动变速器的管路压力的反馈控制的车辆用自动变速器的管路压力控制单元中,包括:调整管路压力的管路压力电磁阀(14),检测真实管路压力的传感器 以及控制管路压力电磁阀的微处理器(17)。 微处理器被编程为:根据车辆的运行状态计算所需的管路压力(PREQ),根据所需管路压力(PREQ)计算目标管路压力(PREQ *),目标管路压力(PREQ *) 通过线路压力校正的安全系数(S1)进行修正,并计算所需线路压力(PREQ)和实际线路压力(PL)之间的线路压力差(DELTAPERR),并根据实际压力差值(DELTAPFB)添加反馈控制量 线压力与目标管路压力的关系,以计算命令行压力(PL *),根据命令行压力(PL *)控制管路压力阀。