Patent ID: 8326503
Filing Date: 2012-12-04
Classification: F16H,Y10T

Abstract:
1. A control device for a lock-up clutch of a vehicle, the vehicle having a motive power source, an automatic transmission, a hydraulic power transmission device disposed between the motive power source and the automatic transmission, and a lock-up clutch directly connecting an input side and an output side of the hydraulic power transmission device, the control device comprising: a deceleration lock-up control performing engagement control of the lock-up clutch during vehicle deceleration; a lock-up smooth off control gradually disengaging the lock-up clutch upon completion of the deceleration lock-up control; a lock-up smooth off initial pressure learning control learning a disengagement initial pressure of the lock-up smooth off control; and a deceleration lock-up differential pressure learning control reflecting a learning value of a disengagement initial pressure of the lock-up smooth off control in a deceleration lock-up differential pressure during the deceleration lock-up control are executed, and in a case wherein the deceleration lock-up differential pressure learning control is entered, the disengagement initial pressure of the lock-up smooth off control is corrected.