Accumulator control device for hydraulic control device for automatic
transmission for vehicle with engine load dependent backup control
    3.
    发明授权
    Accumulator control device for hydraulic control device for automatic transmission for vehicle with engine load dependent backup control 失效
    用于车辆自动变速器液压控制装置的蓄能器控制装置,具有发动机负载依赖的备用控制

    公开(公告)号:US4995284A

    公开(公告)日:1991-02-26

    申请号:US388515

    申请日:1989-08-02

    摘要: A hydraulic control device for generating a hydraulic pressure for a back pressure chamber of an accumulator in a speed stage shifting device of an automatic transmission for a vehicle such as an automobile is adapted to generate a hydraulic pressure to be supplied to the back pressure chamber of the accumulator by modulating the so-called line hydraulic pressure according to a balance between the modulated pressure itself and the line hydraulic pressure or more desirably an engine power simulation pressure modulated from the line hydraulic pressure to be lower than the line hydraulic pressure in low engine output operation under an influence of a signal hydraulic pressure controlled by an electromagnetic valve, wherein the signal hydraulic pressure decreases to substantially zero when the electromagnetic valve fails, and the accumulator control valve has a spool element having a first pressure receiving area exposed to the modulated hydraulic pressure to generate a positive feedback effect of decreasing the modulated hydraulic pressure along with increase thereof and a second pressure receiving area so that the accumulator control valve variably operates even when the signal pressure has decreased to zero exposed to the line hydraulic pressure or the engine power simulation pressure to generate an effect of increasing the modulated pressure, the first pressure receiving area having an effective pressure responsive sectional area substantially equal in the magnitude and opposite in the orientation to that of the second pressure receiving area.

    摘要翻译: 一种用于在汽车等车辆用自动变速器的变速级变速装置中产生蓄压器的背压室的液压的液压控制装置,其特征在于,能够产生向所述背压室供给的液压 蓄能器根据调制压力本身和线路液压之间的平衡调节所谓的线路液压,或更理想地是从线路液压调制的发动机功率模拟压力低于低发动机中的液压压力 在由电磁阀控制的信号液压的影响下的输出操作,其中当电磁阀故障时,信号液压降至基本为零,并且蓄能器控制阀具有卷轴元件,其具有暴露于调制的第一受压区域 液压产生正反馈e 降低调制液压以及第二压力接收区域的功能,使得即使当信号压力已经下降到零暴露于线路液压或发动机功率模拟压力以产生效果时,蓄能器控制阀也可变地运行 增加调制压力,第一压力接收区域具有在大小上基本相等的有效的压力响应截面面积,并且在取向方向上与第二压力接收区域的取向相反。

    Fuel vapor treating apparatus
    10.
    发明授权
    Fuel vapor treating apparatus 失效
    燃料蒸气处理装置

    公开(公告)号:US5623911A

    公开(公告)日:1997-04-29

    申请号:US503111

    申请日:1995-07-17

    IPC分类号: F02M25/08 F02M37/04

    CPC分类号: F02M25/0854

    摘要: Disclosed is a fuel vapor treating apparatus, in which fuel vapor evaporated in a fuel tank is not released directly into the atmosphere but is collected and treated. This apparatus is provided with a canister for collecting fuel vapor and a purge line for purging the fuel vapor collected in the canister to an intake passage of an engine. The canister has a first control valve for controlling introduction of fuel vapor thereto. The canister also has a second control valve for controlling the introduction of outside air and the exhaust of gas therefrom. The first control valve communicates with a vapor line extending from the fuel tank and is opened whenever the internal pressure of the fuel tank exceeds a predetermined level to introduce fuel vapor from the fuel tank into the canister. The second control valve is designed to communicate with the atmosphere and is opened whenever fuel is purged through the purge line to the intake passage to introduce outside air into the canister. The second control valve is opened whenever the internal pressure of the canister exceeds a predetermined level to exhaust fuel-free gas left after collection of the fuel. Both the first control valve and the second control valve are diaphragm check valves. The control valves are designed to be readily detached from the canister.

    摘要翻译: 公开了一种燃料蒸气处理装置,其中在燃料箱中蒸发的燃料蒸气不直接释放到大气中,而是被收集和处理。 该装置设置有用于收集燃料蒸气的罐和用于将收集在罐中的燃料蒸汽吹扫到发动机的进气通道的吹扫管线。 罐具有用于控制向其引入燃料蒸气的第一控制阀。 罐还具有用于控制外部空气的引入和从其排出气体的第二控制阀。 第一控制阀与从燃料箱延伸的蒸气管连通,并且每当燃料箱的内部压力超过预定水平时打开,将燃料蒸气从燃料箱引入到罐中。 第二控制阀被设计成与大气连通,并且当燃料通过吹扫管线被清除到进气通道以将外部空气引入到罐中时被打开。 每当罐的内部压力超过预定水平时,第二控制阀就打开,以排出燃料收集之后剩余的无燃料气体。 第一控制阀和第二控制阀都是隔膜止回阀。 控制阀被设计成容易地与罐分离。