Patent ID: 6009988
Filing Date: 2000-01-04
Classification: B60W,F16H,Y10T

Abstract:
A lock-up control device for controlling engaging force in a lock-up clutch so as to change an amount of torque transmitted to the lock-up clutch, said lock-up control device comprising:input shaft torque estimation means for producing input shaft torque applied to an input shaft of a transmission;engine torque estimation means for producing engine torque based on engine speed and throttle opening;weighted mean engine torque calculation means for if an amount of variations in the engine torque or the throttle opening is greater than a predetermined value, producing weighted mean engine torque by the input shaft torque and the engine torque in accordance with a weight coefficient, which is calculated based on the amount of variations; andcontrol means for controlling the engaging force in the lock-up clutch based on the weighted mean engine torque.