公开(公告)号：US5865702A

公开(公告)日：1999-02-02

申请号：US833386

申请日：1997-04-04

申请人： Fumitomo Yokoyama ,  Kazuhisa Ozaki ,  Masahiko Ando ,  Akira Fukatsu ,  Makoto Hijikata ,  Toshiyuki Mae ,  Yoshiaki Hirota ,  Yasuo Hojo ,  Nobuaki Takahashi ,  Kagenori Fukumura ,  Yasunari Nakamura

发明人： Fumitomo Yokoyama ,  Kazuhisa Ozaki ,  Masahiko Ando ,  Akira Fukatsu ,  Makoto Hijikata ,  Toshiyuki Mae ,  Yoshiaki Hirota ,  Yasuo Hojo ,  Nobuaki Takahashi ,  Kagenori Fukumura ,  Yasunari Nakamura

IPC分类号： F16H61/06 ,  F16H59/72 ,  F16H61/02 ,  F16H61/00

CPC分类号： F16H61/0267 ,  F16H59/72

摘要： An oil temperature responsive hydraulic control system for an automatic transmission includes a hydraulic servo for applying/releasing a frictional engagement element; a pressure regulator valve for regulating oil pressure fed to the hydraulic servo; and a signal pressure oil passage for applying a pressure regulating signal pressure to the pressure regulator valve. A control valve is arranged in the signal pressure oil passage for changing the effective diameter of the signal pressure oil passage responsive to change in oil temperature.

摘要翻译： 用于自动变速器的油温响应液压控制系统包括用于施加/释放摩擦接合元件的液压伺服机构; 用于调节供给液压伺服的油压的压力调节阀; 以及用于向压力调节阀施加压力调节信号压力的信号压力油路。 控制阀配置在信号压力油路中，用于响应油温的变化改变信号压力油通道的有效直径。

公开(公告)号：US4974696A

公开(公告)日：1990-12-04

申请号：US250297

申请日：1988-09-28

申请人： Shin Miyajima ,  Takenori Kano ,  Fumitomo Yokoyama ,  Yasunari Nakamura ,  Masaharu Tanaka ,  Koujiro Kuramochi

发明人： Shin Miyajima ,  Takenori Kano ,  Fumitomo Yokoyama ,  Yasunari Nakamura ,  Masaharu Tanaka ,  Koujiro Kuramochi

IPC分类号： B60K17/35 ,  B60K17/346 ,  B60K23/08

CPC分类号： B60K23/0808 ,  B60K17/3462

摘要： A differential motion limiting device, for a power transmission device for four wheel drive vehicle, to regulate differential motion of a center differential device includes a wet-type multi plate clutch and an hydraulic actuator. And a switching valve is attached to an oil passage to the hydraulic actuator. In normal running condition, a switching valve is in connecting condition, and a hydraulic pressure being varied by driving conditions is applied to a hydraulic actuator. Under this condition, the clutch is slippingly engaged by certain engaging force so that torque, per certain ratio, is transmitted to the front and the rear wheels. In high speed condition, such as the maximum speed state like an overdrive, or a vehicle speed more than 100 km/h, sensors detect such state, then the switching valve is switched, and the clutch is released. As a result, lubrication oil is flowed between friction plates and separators of the clutch to release heat therefrom.

摘要翻译： 用于四轮驱动车辆的动力传递装置的用于调节中心差速装置的差速运动的差动运动限制装置包括湿式多板离合器和液压致动器。 并且切换阀附接到通向液压致动器的油路。 在正常运行状态下，切换阀处于连接状态，并且通过驱动条件改变的液压压力被施加到液压致动器。 在这种情况下，离合器通过一定的接合力滑动地接合，使得一定比例的扭矩传递到前轮和后轮。 在高速状态下，例如过速驱动的最大速度状态或超过100km / h的车速，传感器检测到这样的状态，切换阀，离合器被释放。 结果，润滑油在摩擦片和离合器的分离器之间流动，以从其中释放热量。

公开(公告)号：US4909345A

公开(公告)日：1990-03-20

申请号：US250296

申请日：1988-09-28

申请人： Tatsuya Iwatsuki ,  Takenori Kano ,  Fumitomo Yokoyama ,  Yasunari Nakamura ,  Isamu Minemoto ,  Teruo Akashi ,  Masaharu Tanaka ,  Seitoku Kubo

发明人： Tatsuya Iwatsuki ,  Takenori Kano ,  Fumitomo Yokoyama ,  Yasunari Nakamura ,  Isamu Minemoto ,  Teruo Akashi ,  Masaharu Tanaka ,  Seitoku Kubo

IPC分类号： B60K23/08

CPC分类号： B60K23/0808

摘要： A power transmission device for four wheel drive vehicle includes a differential motion limiting device, for limiting differential motion of a center differential device, which is made up by a wet-type frictional clutch and a hydraulic actuator. Under running condition, the frictional clutch is engaged by certain engaging force, and considering frictional coefficient of roads, the clutch is engaged with some slips so that torque distribution to front and rear wheels becomes even (50:50), then torque is distributed from the center differential device to front and rear wheels. The line pressure is applied to the hydraulic actuator through a regulator valve. In normal running condition, the regulator valve reduces the line pressure pre certain ratio, the reduced pressure is applied to the hydraulic actuator. In the case the manual valve being shifted to R range or low speed position, the regulator valve is switched to apply the line pressure directly to the hydraulic actuator. In the case of the manual valve being shifted to a low speed position, then from the low speed port of the manual valve, the line pressure is applied to a modulator valve where the line pressure is modulated, and applied to a back pressure port of a primary regulator valve to boost the line pressure up to certain volume.

摘要翻译： 用于四轮驱动车辆的动力传递装置包括差速运动限制装置，用于限制由湿式摩擦离合器和液压致动器构成的中心差速装置的差速运动。 在运行状态下，摩擦离合器通过一定的接合力接合，考虑到道路的摩擦系数，离合器与一些滑移接合，使前轮和后轮的扭矩分布均匀（50:50），扭矩从 中心差速装置到前轮和后轮。 管路压力通过调节阀施加到液压执行机构。 在正常运行状态下，调节阀将线路压力降低到一定比例，减压被施加到液压执行机构。 在手动阀门被移动到R档位或低档位置的情况下，调节阀被切换以将管路压力直接施加到液压执行器。 在手动阀被转移到低速位置的情况下，然后从手动阀的低速端口将管路压力施加到调节阀，在调节阀处调节管路压力，并将其施加到 一个主要调节阀，以将管线压力提升到一定的体积。