STARTING AND SLIPPING CONTROL OF CLOSED LOOP FOR MOTOR VEHICLES HAVING AUTOMATIC GEAR BOX

摘要

The automatic clutch controller receives inputs from an engine speed sensor (13) and a transmission input speed sensor (31) to develop a clutch actuation signal to control a clutch actuator (27) between disengaged and fully engaged positions. Throttle setting is used to distinguish between a launch mode corresp. to normal vehicle start and a creep mode when a reference speed is determined from throttle setting and engine speed. An integral error function and a differential engine speed function are combined to adjust clutch engagement to vehicle loading. The controller includes a prefilter (68) and a compensator (70) to reduce the need to cater for individual vehicles or vehicle models.