Automatic transmission
    3.
    发明授权
    Automatic transmission 失效
    自动变速器

    公开(公告)号:US5460577A

    公开(公告)日:1995-10-24

    申请号:US51737

    申请日:1993-04-23

    摘要: In an automatic transmission according to the present invention, a coast brake cutoff valve is arranged between a range-pressure-producing manual valve and shift valves and, when changed over, selectively feeds oil to hydraulic engine brake servomotors. An engine brake solenoid valve is on/off controlled by a shifting output signal from a CPU, whereby the coast brake cutoff valve is selectively changed over. A lockout valve is arranged between the coast brake cutoff valve and the manual valve and is connected to one of shifting solenoid valves. The automatic transmission can therefore be operated without trouble even when an electrical problem occurs in the shifting solenoid valves and/or the engine brake solenoid valve.

    摘要翻译: 在根据本发明的自动变速器中,在制压手动阀和换档阀之间布置有惯性制动器截止阀,当切换时,选择性地将油输送到液压发动机制动伺服电动机。 发动机制动电磁阀通过来自CPU的变速输出信号进行开/关控制,从而选择性地切换惯性制动器截止阀。 一个闭锁阀配置在惯性制动器截止阀和手动阀之间,并连接到换档电磁阀之一。 因此即使在换档电磁阀和/或发动机制动电磁阀中发生电气问题的情况下,也能够无故障地进行自动变速器的动作。

    Shift control system for vehicular automatic transmission
    4.
    发明授权
    Shift control system for vehicular automatic transmission 失效
    车辆自动变速箱换档控制系统

    公开(公告)号:US5501642A

    公开(公告)日:1996-03-26

    申请号:US335846

    申请日:1995-02-21

    摘要: In order to control the engine output timing always properly irrespective of the aging of an automatic transmission, the present invention provides a shift control system for a vehicular automatic transmission, which system comprises: release end detecting means for detecting the release end of a frictional engagement element for a higher gear stage, at a shifting time from higher to lower gear stages; synchronism detecting means for detecting the synchronism between an engine R.P.M. and a rotating element in the automatic transmission at the lower gear stage; and engine output control means for controlling the output of the engine. The aforementioned engine output control means starts the rise control of the engine output, when the release end of the frictional engagement element for the higher gear stage is detected by the release end detecting means, and ends the rise control of the aforementioned engine output when the synchronism between the engine R.P.M. and the rotating element in the automatic transmission at the lower gear stage is detected by the synchronism detecting means.

    摘要翻译: PCT No.PCT / JP94 / 00383 Sec。 371日期1995年2月21日 102(e)日期1995年2月21日PCT 1994年3月9日PCT公布。 出版物WO94 / 21484 日期1994年9月29日。为了始终适当地控制发动机输出定时,与自动变速器的老化无关,本发明提供了一种用于车辆自动变速器的变速控制系统,该系统包括:释放端检测装置, 用于较高档位的摩擦接合元件的释放端,从高档到低档级的换档时间; 同步检测装置,用于检测发动机R.P.M. 以及在低档级的自动变速器中的旋转元件; 以及用于控制发动机的输出的发动机输出控制装置。 上述发动机输出控制装置,当通过释放端检测装置检测到用于较高档位的摩擦接合元件的释放端时,开始发动机输出的上升控制,并且当上述发动机输出的上升控制 发动机RPM之间的同步 并且由同步检测装置检测在低档级的自动变速器中的旋转元件。

    First and second hysteresis zones for shift and lock-up control system
in an automatic transmission
    6.
    发明授权
    First and second hysteresis zones for shift and lock-up control system in an automatic transmission 失效
    第一和第二滞后区,用于自动变速器中的换档和锁定控制系统

    公开(公告)号:US5683327A

    公开(公告)日:1997-11-04

    申请号:US563385

    申请日:1995-11-28

    摘要: A control system for an automatic transmission including a fluid transmission unit and a lockup clutch arranged in the fluid transmission unit. A running state sensor(s) detects the running state of the vehicle and outputs signals to an electronic control unit for deciding a shift and outputting a shift signal and for deciding lockup clutch ON/OFF and outputting a lockup ON/OFF signal. A hydraulic control unit selectively actuates a plurality of solenoid valves, in response to the output signals from the electronic control unit, to selectively apply/release a plurality of frictional engagement elements, to establish a new gear stage, and the lockup clutch. The electronic control unit (ECU) has stored in memory therein, a lockup diagram having a first hysteresis region defined by a lockup OFF line and a first lockup ON line, and a second hysteresis region defined by a second lockup ON line formed in the first hysteresis region and the first lockup ON line. The ECU compares the output signals of the running state sensor(s) against the lockup diagram to decide lockup clutch OFF, if the running state is in a region below the lockup OFF line, lockup clutch ON, if the running state is over the first lockup ON line, and lockup clutch ON if the running state is in the second hysteresis region. The ECU also outputs a lockup signal to a predetermined one of the solenoid valves to apply/release the lockup clutch in accordance with the results of the comparison.

    摘要翻译: 一种用于自动变速器的控制系统,包括设置在流体传动单元中的流体传动单元和锁止离合器。 运行状态传感器检测车辆的运行状态,并将信号输出到电子控制单元,用于确定换档并输出换档信号,并且用于决定锁止离合器的ON / OFF并输出锁定ON / OFF信号。 液压控制单元响应于来自电子控制单元的输出信号选择性地致动多个电磁阀,以选择性地施加/释放多个摩擦接合元件,以建立新的齿轮级和锁止离合器。 电子控制单元(ECU)已经存储在其中,具有由锁定OFF线和第一锁定ON线限定的第一滞后区的锁定图以及由在第一个中形成的第二锁定在线上限定的第二滞后区 滞后区域和第一个锁定ON线。 ECU将运行状态传感器的输出信号与锁定图进行比较,以确定锁止离合器OFF,如果运行状态处于锁定OFF线以下的区域,锁止离合器ON,如果运行状态超过第一 锁定ON线,并且如果运行状态处于第二滞后区域,则锁止离合器接通。 ECU还向预定的一个电磁阀输出锁定信号,以根据比较结果施加/释放锁止离合器。

    Automatic transmission
    7.
    发明授权
    Automatic transmission 失效
    自动变速器

    公开(公告)号:US5505670A

    公开(公告)日:1996-04-09

    申请号:US272216

    申请日:1994-07-08

    IPC分类号: F16H59/24 F16H59/44 F16H61/14

    摘要: A lockup clutch of an automatic transmission is controlled so that no shock is produced while the vehicle is running within a predetermined gear stage. The automatic transmission includes a fluid coupling; a lockup clutch provided in the fluid coupling; a shift selector for selecting a range; a vehicle speed sensor for detecting vehicle speed, and a throttle opening sensor for detecting throttle opening. A control unit determines a gear stage in accordance with the selected range, the vehicle speed and the throttle opening, decides a shift, produces a shifting output signal, decides ON or OFF for the lockup clutch in accordance with the selected range, the vehicle speed and the throttle opening, and produces a lockup ON/OFF output signal. An oil pressure circuit actuates solenoid valves in response to the shifting output signal and the lockup ON/OFF output signal of the control unit. The solenoid valves, in turn, control engagement and release of frictional engagement elements to achieve the decided gear stage and control engagement and release of the lockup clutch. The control unit includes, stored in memory, a lockup diagram set with an ON/OFF hysteresis area; a comparator for deciding whether or not the vehicle speed and the throttle opening, at the time of a shifting output signal is produced, are within the ON/OFF hysteresis area of the lockup diagram; and a lockup output signal generator for turning the lockup output ON if the vehicle speed and the throttle opening are within the ON/OFF hysteresis area when the shifting output signal is produced.

    摘要翻译: 控制自动变速器的锁止离合器,使得在车辆在预定档位期间行驶时不产生冲击。 自动变速器包括流体联轴器; 锁定离合器,设置在所述流体联接器中; 用于选择范围的换档选择器; 用于检测车速的车速传感器和用于检测节气门开度的节气门开度传感器。 控制单元根据所选择的范围,车速和节气门开度确定变速级,决定换挡,产生变速输出信号,根据所选择的范围,对锁止离合器进行判定ON或OFF,车速 和节气门开度,并产生锁定ON / OFF输出信号。 油压回路根据变速输出信号和控制单元的锁定ON / OFF输出信号来启动电磁阀。 电磁阀进而控制摩擦接合元件的接合和释放,以实现确定的齿轮级并控制锁止离合器的接合和释放。 控制单元包括存储在存储器中的用ON / OFF滞后区域设置的锁定图; 用于判定在产生移位输出信号时的车速和节气门开度是否在锁定图的ON / OFF滞后区域内的比较器; 以及锁定输出信号发生器,用于当产生换档输出信号时车速和节气门开度在ON / OFF滞后区域内时,转动锁定输出。

    Continuously variable transmission
    8.
    发明授权
    Continuously variable transmission 失效
    连续可变传动

    公开(公告)号:US5846152A

    公开(公告)日:1998-12-08

    申请号:US755474

    申请日:1996-11-22

    IPC分类号: F16H9/26 F16H37/02 F16H37/08

    CPC分类号: F16H37/0846 F16H2037/088

    摘要: A transmission unit includes a belt type continuously variable transmission (CVT) having a first pulley arranged on a first shaft with a stationary sheave, a movable sheave and a hydraulic actuator for the movable sheave. The second pulley of the CVT is mounted on a second shaft and also has a stationary sheave, a movable sheave and a hydraulic actuator. A belt is mounted around the first and second pulleys. The transmission unit further includes a synchronous transmission for connecting a first rotary member arranged on the first shaft and a second rotary member arranged on the second shaft at a constant speed ratio, an output gear for transmitting power to the wheels and a planetary gear unit. The planetary gear unit is mounted on the second shaft and includes at least first, second and third rotary elements. The first rotary element is connected to the second rotary member, the second rotary element to the second pulley, and the third rotary element to the output gear. The first shaft is connected through the CVT to the second rotary element and through the synchronous transmission to the first rotary element. The hydraulic actuators are arranged on opposite sides of the belt.

    摘要翻译: 传动单元包括带式无级变速器(CVT),其具有布置在具有固定滑轮的第一轴上的第一滑轮,可动滑轮和用于可动滑轮的液压致动器。 CVT的第二滑轮安装在第二轴上,并且还具有固定滑轮,可动滑轮和液压致动器。 皮带安装在第一和第二滑轮周围。 传动单元还包括用于连接布置在第一轴上的第一旋转构件和以恒定速比配置在第二轴上的第二旋转构件的同步变速器,用于向车轮传递动力的输出齿轮和行星齿轮单元。 行星齿轮单元安装在第二轴上并且包括至少第一,第二和第三旋转元件。 第一旋转元件连接到第二旋转构件,第二旋转元件连接到第二滑轮,并且第三旋转元件连接到输出齿轮。 第一轴通过CVT连接到第二旋转元件,并通过同步传动装置连接到第一旋转元件。 液压致动器布置在带的相对侧上。

    Continuously variable transmission
    9.
    发明授权
    Continuously variable transmission 失效
    连续可变传动

    公开(公告)号:US5833571A

    公开(公告)日:1998-11-10

    申请号:US766349

    申请日:1996-12-13

    摘要: A continuously variable transmission is switchable between the low and high modes by changing engagement between two clutches. A sensor shoe which moves in association with a movable sheave of a primary pulley is provided with an indent and a protrusion formed at different locations on the sensor shoe. In addition, indents are formed on a spool of a low-high control valve. An interlock rod is provided between the sensor shoe and the low-high control valve. In a predetermined pulley-ratio region in the low and high modes, for example, on a low pulley-ratio side, as the movable sheave moves to the O/D side a base end of the interlock rod rides on the upper surface of the sensor shoe while its opposite end is engaged within one of the indents, thus mechanically locking the low-high control valve. In this way, switching between the low and high modes due to selective engagement of the low and high clutches can be inhibited.

    摘要翻译: 通过改变两个离合器之间的接合,无级变速器可在低模和高速之间切换。 与主滑轮的可动滑轮相关联地移动的传感器靴设置有在传感器靴上的不同位置处形成的凹部和突起。 此外,凹口形成在低压控制阀的阀芯上。 传感器靴和低压控制阀之间设有互锁杆。 在低模式和高模式中的预定滑轮比区域中,例如,在低滑轮比侧,当可动滑轮移动到O / D侧时,互锁杆的基端部位于 传感器鞋,而其相对端接合在一个凹口内,因此机械地锁定低高度的控制阀。 以这种方式,可以抑制由于低和高离合器的选择性接合而导致的低模式和高模式之间的切换。