公开(公告)号：US5150297A

公开(公告)日：1992-09-22

申请号：US583921

申请日：1990-09-17

申请人： John A. Daubenmier ,  Paul A. Baltusis ,  Ronald T. Cowan ,  Joseph E. El-Khoury ,  Roy S. Williams

发明人： John A. Daubenmier ,  Paul A. Baltusis ,  Ronald T. Cowan ,  Joseph E. El-Khoury ,  Roy S. Williams

IPC分类号： F16H61/04 ,  F16H61/08 ,  F16H61/14

CPC分类号： F16H61/0437 ,  F16H2061/0444 ,  F16H2061/0448 ,  F16H61/08 ,  F16H61/14 ,  Y10T477/69387

摘要： An electronic control system for a multiple ratio automotive transmission having pressure operated clutch and brake servos for controlling ratio changes, solenoid operated valves for triggering operation of shift valves in a valve circuit that communicates with the servos, a microprocessor for developing control signals in response to input variables that measure engine torque, engine speed, vehicle speed and a driver-actuated range selector, the shift valves responding to the control signals in accordance with a control strategy that effects controlled response of the shift valves to meet varying road speed, engine torque and road conditions with high quality shift performance.

公开(公告)号：US5383825A

公开(公告)日：1995-01-24

申请号：US66847

申请日：1993-05-25

申请人： Joseph E. El-Khoury ,  Frank W. Timte ,  Gerard P. Kuchta ,  Edmond R. League

发明人： Joseph E. El-Khoury ,  Frank W. Timte ,  Gerard P. Kuchta ,  Edmond R. League

IPC分类号： F16H59/14 ,  F16H59/38 ,  F16H59/44 ,  F16H59/78 ,  F16H61/04 ,  F16H61/06 ,  F16H61/08

CPC分类号： F16H61/061 ,  F16H2059/385 ,  F16H2061/0444 ,  F16H59/14 ,  F16H59/44 ,  F16H59/78 ,  Y10T477/693742 ,  Y10T477/693746 ,  Y10T477/693762

摘要： An automatic transmission mechanism having multiple ratio gearing and clutch and brake elements operated by fluid pressure operated servos for changing speed ratio in the transmission and a controller for actuating and releasing the clutches and brakes in response to operating demands determined by sensed variables such as vehicle speed, engine torque, manual valve position, transmission turbine speed, and engine temperature, and means for achieving improved control of a synchronous downshift event by electronically regulating the exhaust pressure from an off-going friction element of the clutch and brake structure, thus controlling the torque-carrying capacity of that off-going element during the downshift interval.

摘要翻译： 一种自动变速机构，具有多个比率传动装置，并且由流体压力操作的伺服机构操作的离合器和制动元件用于变速器中的变速比，以及控制器，用于响应于由感测变量确定的操作要求来致动和释放离合器和制动器， 发动机扭矩，手动阀位置，变速器涡轮机转速和发动机温度，以及用于通过电子调节来自离合器和制动结构的离开摩擦元件的排气压力来实现同步降档事件的改进控制的装置，从而控制 在降档间隔期间该离开元件的转矩承载能力。