Diagnostic apparatus for continuously variable transmission
    2.
    发明授权
    Diagnostic apparatus for continuously variable transmission 失效
    无级变速器诊断装置

    公开(公告)号:US4698764A

    公开(公告)日:1987-10-06

    申请号:US694280

    申请日:1985-01-24

    摘要: A diagnostic apparatus for a continuously variable transmission the speed ratio and/or the rate of variation in the speed ratio of which are controlled by a shift-regulating device controlled by command signals from a control system. The diagnostic apparatus, which checks if the speed ratio is normally controlled, comprises: a detecting device for detecting an actual speed ratio and/or an actual rate of variation in the speed ratio; a memory storing data for determining normal ranges of the speed ratio and/or normal ranges of the rate of variation in the speed ratio, the normal ranges corresponding to shifting conditions of the transmission which are established by the shift-regulating device according to the command signals; and a judging device for selecting one of the normal ranges of the speed ratio, and/or one of the normal ranges of the rate of variation in the speed ratio, based on the command signals, the judging device checking whether the detected actual speed ratio and/or the detected actual rate of variation in the speed ratio fall within the selected normal ranges.

    摘要翻译: 一种用于无级变速器的诊断装置,其速度比和/或其速比的变化率由通过来自控制系统的命令信号控制的换档调节装置控制。 检查速度比是否正常地被控制的诊断装置包括:用于检测实际速比和/或速比的实际变化率的检测装置; 存储数据,用于确定速度比的正常范围和/或速度比的变化率的正常范围,对应于由换档调节装置根据命令建立的变速器的移动条件的正常范围 信号; 以及判断装置,用于根据命令信号选择速比的正常范围中的一个范围和/或速度比的变化率的正常范围中的一个,判断装置检查检测到的实际速比 和/或检测到的速比的实际变化率落在所选择的正常范围内。

    Spool-type control valve assembly with reduced spool stroke for
hydraulic belt-and-pulley type continuously variable transmission
    5.
    发明授权
    Spool-type control valve assembly with reduced spool stroke for hydraulic belt-and-pulley type continuously variable transmission 失效
    用于液压皮带式和无级变速传动的滑阀行程减少的阀芯式控制阀组件

    公开(公告)号:US4653353A

    公开(公告)日:1987-03-31

    申请号:US684734

    申请日:1984-12-21

    IPC分类号: F16H61/662 B60K41/16

    摘要: A hydraulic control system for a continuously variable transmission having a cylinder for changing the effective diameter of a pulley to control a speed ratio of the transmission. The control system comprises a spool valve assembly communicating with the cylinder to control the supply and discharge flows of a fluid to and from the cylinder. The valve assembly comprises a shift-speed control valve unit for controlling a rate of variation in the speed ratio of the transmission. The shift-speed control valve unit has only two discharge ports associated with the fluid discharge from the cylinder. The shift-speed control valve unit may take the form of a spool valve having a spool axially movable to open and close the ports to permit and restrict the fluid flows through supply and discharge conduits communicating with the ports and the cylinder. The spool may only partially open the corresponding port to permit the fluid flow therethrough for supplying or discharging the fluid. The valve assembly may comprise a shift-direction switching valve unit for changing the direction in which the speed ratio is varied. The switching valve unit has only two discharge ports associated with the fluid discharge from the cylinder.

    摘要翻译: 一种用于无级变速器的液压控制系统,其具有用于改变滑轮的有效直径的气缸,以控制变速器的速比。 控制系统包括与气缸连通的滑阀组件,以控制流体与气缸的供给和排出流。 阀组件包括用于控制变速器的变速比的变化率的换挡速度控制阀单元。 换档速度控制阀单元仅具有与来自气缸的流体排出相关联的两个排出口。 换档速度控制阀单元可以采用滑阀的形式,该滑阀具有可轴向移动以便打开和关闭端口的阀芯,以允许和限制流体流过与端口和气缸连通的供应和排出管道。 阀芯可以仅部分地打开相应的端口,以允许流体流过其中以供给或排出流体。 阀组件可以包括用于改变速度比改变的方向的换档方向切换阀单元。 切换阀单元仅具有与来自气缸的流体排放相关联的两个排出口。

    Apparatus for controlling continuously variable transmission when
accelerating from low speeds
    7.
    发明授权
    Apparatus for controlling continuously variable transmission when accelerating from low speeds 失效
    用于在从低速加速时控制无级变速器的装置

    公开(公告)号:US4622865A

    公开(公告)日:1986-11-18

    申请号:US676197

    申请日:1984-11-15

    摘要: An apparatus for controlling an continuously variable transmission (CVT) used for a power transmission system of a vehicle. The CVT is controlled such that an actual engine speed becomes a desired engine speed. The desired engine speed is set as a function of running parameter such as intake throttle position. When the CVT is controlled in the same way as at the steady state of the vehicle at the acceleration of the vehicle, the acceleration performance is degraded. Thus, according to the present invention, the speed ratio of the CVT is reduced when the acceleration of the vehicle is small, in spite of the requisition of the vehicle acceleration. As a result, satisfactory drivability is attained.

    摘要翻译: PCT No.PCT / JP84 / 00357 Sec。 371日期1984年11月15日 102(e)1984年11月15日日期PCT 1984年7月11日提交。一种用于控制用于车辆动力传递系统的无级变速器(CVT)的装置。 控制CVT使得实际的发动机转速成为期望的发动机转速。 期望的发动机转速被设定为诸如进气节气门位置的运行参数的函数。 当以与车辆的稳定状态相同的方式控制CVT时,加速性能下降。 因此,根据本发明,尽管要求车辆加速度,但是当车辆的加速度小时,CVT的速比降低。 结果,达到令人满意的驾驶性能。

    Accumulator control device for hydraulic control device for automatic
transmission for vehicle with engine load dependent backup control
    8.
    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。

    Hydraulic transmission controller with coupling pressure compensation
    10.
    发明授权
    Hydraulic transmission controller with coupling pressure compensation 失效
    带联轴器压力补偿的液压传动控制器

    公开(公告)号:US4928557A

    公开(公告)日:1990-05-29

    申请号:US275511

    申请日:1988-11-23

    IPC分类号: F16H61/00 F16H61/06

    摘要: A hydraulic control apparatus for controlling a frictional coupling device of an automatic transmission for a motor vehicle includes a shift valve for effecting an engaging action of the coupling device from a first position to a second position, and an accumulator for reducing a change in a hydraulic pressure applied to the coupling device. The control apparatus is adapted to control a control value to regulate a back pressure of the accumulator, based on a parameter associated with an output of an engine, and according to a predetermined relationship between the control value and the parameter, so as to reduce a shifting shock of the transmission. The control apparatus includes a detector for detecting an engaging time of the engaging action of the coupling device. The control apparatus further includes a compensating device for updating the relationship between the control value and the parameter, depending upon the detected engaging time, with respect to a specific value of the parameter at which the engaging action takes place. The compensating device maintains the updated relationship for use for a subsequent engaging action of the coupling device from the first position to the second position.

    摘要翻译: 用于控制用于机动车辆的自动变速器的摩擦联接装置的液压控制装置包括用于实现联接装置从第一位置到第二位置的接合动作的换档阀和用于减小液压变化的蓄能器 施加到联接装置的压力。 控制装置适于基于与发动机的输出相关联的参数,并且根据控制值和参数之间的预定关系来控制控制值来调节蓄能器的背压,以便减少 转移传动的冲击。 控制装置包括用于检测联接装置的接合动作的接合时间的检测器。 控制装置还包括补偿装置,用于根据检测到的接合时间,相对于发生接合动作的参数的特定值来更新控制值和参数之间的关系。 补偿装置维持更新的关系,用于随后联接装置从第一位置到第二位置的接合动作。