公开(公告)号：EP0655036A1

公开(公告)日：1995-05-31

申请号：EP94918603.0

申请日：1994-06-21

申请人： HYUNDAI MOTOR COMPANY

发明人： JANG, Jae Duk, San 1-1 ,  LIM, Ki Been, San 1-1 ,  LIM, Do Ki, San 1-1

IPC分类号： F16H61

CPC分类号： F16H61/0206 ,  F16H61/0021 ,  F16H61/04 ,  F16H61/08 ,  F16H61/14 ,  F16H61/143 ,  F16H2061/0255 ,  F16H2061/0444 ,  F16H2061/0485 ,  Y10T74/19274 ,  Y10T477/6935 ,  Y10T477/693635 ,  Y10T477/69387

摘要： A hydraulic control system for 4-speed automatic transmission which is controlled by torque control hydraulic pressure and drive hydraulic pressure in regular succession and can provide a skip shift comprises a fluid pump (32), a pressure regulator valve (34) for regulating the line pressure generated at the fluid pump (32), a plurality of frictional elements (108, 62, 120, 84, 94, 100, 126) actuated by drive hydraulic pressure or reverse hydraulic pressure in accordance with the position of a valve spool of a manual valve (58), a first transmission control portion (D) having at least two valves (78, 86, 98) for supplying hydraulic pressure to at least one of the frictional elements, and a second transmission control portion (E) for selecting at least one of the frictional elements.