Method and system for detecting the rotation rate of the output shaft of a torque converter

摘要: A vehicle automatic transmission includes a torque converter which has rotational power output member, and also gear mechanism. This mechanism includes; friction engaging mechanism; first second input members; clutch selectively engages the member to member; member. When is rotating via clutch, enabled provide its speed stage, while, when stage other than in cooperation with engagement operation of The detected, disengaged engaged, by taking it as being system disclosed for performing method.