Slip control system for automotive vehicle with means for controlling the lock-up state of a torque converter

摘要

A slip control system for an automotive vehicle includes an automatic power transmission, a torque converter, a lock-up control device for controlling operation of the lock-up device depending upon an input from a traveling state detection device which detects traveling condition including driving operation, an acceleration slip detection device provided as a part of the traveling state detection device for detecting acceleration slip of the driving wheels, a torque reduction device for reducing a torque to be delivered to the drive wheels, an acceleration slip control device for operating the torque reduction device for performing acceleration slip suppressing control when the acceleration slip detecting device detects acceleration slip, and a holding device for inhibiting switching of operational state of the lock- up device by the lock-up control device while the acceleration slip control device is in operative state for performing acceleration slip suppressing control, to maintain the torque converter in the state immediately before initiation of the acceleration slip suppressing control.