GENERAL CONTROLLER OF SPEED CHANGE AND LOCK UP OF AUTOMATIC TRANSMISSION FOR VEHICLE

摘要

PURPOSE: To prevent surely engine stall at the time of sudden braking in the case of a general controller for the speed shift and lock up of a vehicle automatic transmission to make lock up control pressure and speed shift control pressure by means of a hydraulic control unit that copossesses a hydraulic source. CONSTITUTION: This controller is provided with a general control means (j) for lock up and speed shift that outputs to a lock up control actuator (g) a control command to release a lock up clutch (c) or to continue the release at the time of sudden braking operation detection and at the same time outputs to a speed shift control actuator (h) a control command to prohibit speed change operation at a speed shift mechanism (b).