Fluid pressure control device for an automatic transmission in a vehicle
    32.
    发明授权
    Fluid pressure control device for an automatic transmission in a vehicle 失效
    用于车辆中自动变速器的流体压力控制装置

    公开(公告)号:US5379874A

    公开(公告)日:1995-01-10

    申请号:US60993

    申请日:1993-05-14

    CPC classification number: F16H61/0276 F16H2061/004

    Abstract: A fluid pressure control device is equipped with a valve body which has an input port connected to a hydraulic fluid source, an output port which is connected to a pressure chamber of a clutch of an automatic transmission, and a discharge port. It further includes a solenoid valve which is incorporated in the valve body and has a valve spool designed to selectively connect the output port to the input port or the discharge port. A discharge passage extends from the discharge port of the valve body, the discharge passage having a discharge port which is positioned at a higher level than the liquid level of the oil pan of the automatic transmission. Finally, a reed valve acts to close the discharge port of the discharge passage to maintain fluid at the aforementioned higher level, and allows the discharge of the hydraulic fluid only through the discharge port.

    Abstract translation: 液压控制装置配备有具有连接到液压流体源的输入端口的阀体,连接到自动变速器的离合器的压力室的输出口和排出口。 它还包括一个电磁阀,该电磁阀装在阀体中,并具有一个阀芯,设计用于将输出端口选择性地连接到输入口或排出口。 排出通道从阀体的排出口延伸,排出通道具有位于比自动变速器的油盘的液位高的高度的排出口。 最后,簧片阀用于关闭排出通道的排放口,以将流体维持在上述较高水平,并允许液压流体仅通过排放口排出。

    Operation control method for a frictional engagement element
    33.
    发明授权
    Operation control method for a frictional engagement element 失效
    摩擦接合元件的操作控制方法

    公开(公告)号:US4943920A

    公开(公告)日:1990-07-24

    申请号:US182101

    申请日:1988-04-15

    Abstract: An operation control method for a frictional engagement element which includes engaging means and piston means for urging the engaging means to engage, the operation of the piston means being controlled by means of pressurized oil supplied through a hydraulic control device for producing an oil pressure of the level corresponding to the quantity of electricity supplied thereto. The relationship between the quantity of electricity supplied to the hydraulic control device and the stroke speed of the piston means is previously stored. An ineffective stroke amount of the piston means is detected from the sum total of the products of drive periods, based on the quantities of electricity supplied to the hydraulic control device while the piston means travels through an ineffective stroke section, and stroke speeds corresponding individually to the quantities of electricity. The stored value of the ineffective stroke amount of the piston means is updated to store the detected ineffective stroke amount. When the piston means is moved through the ineffective stroke section, the period for the electric power supply to the hydraulic control device is monitored in accordance with the updated ineffective stroke amount, and the arrival of the piston means at the position just short of the engagement start position is detected.

    Abstract translation: 一种用于摩擦接合元件的操作控制方法,包括接合装置和用于推动接合装置接合的活塞装置,活塞装置的操作由通过液压控制装置供应的加压油控制,以产生油压 对应于供给的电量的电平。 预先存储供给到液压控制装置的电量与活塞装置的冲程速度之间的关系。 基于在活塞装置行驶通过无效行程部分时提供给液压控制装置的电量,根据驱动周期的乘积的总和来检测活塞装置的无效冲程量,以及单独地对应于 电量。 活塞装置的无效冲程量的存储值被更新以存储检测到的无效冲程量。 当活塞装置移动通过无效冲程部分时,根据更新的无效冲程量和活塞装置到达接合处的位置来监视对液压控制装置的电力供给的周期 检测到起始位置。

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