| 摘要 |
PURPOSE:To prevent the generation of the uncomfortableness due to the reduction of the engine revolution in the transition period by detecting the change of the operation state of a vehicle from the operation state where the control by the first control means is unnecessary to the operation state where the control is necessary, stopping the first control means for a prescribed time and carrying out slip control so that the number of engine revolution becomes equal to an aimed value. CONSTITUTION:Each signal of a car speed sensor 21, throttle sensor 22, shift stage sensor 23, engine revolution speed sensor 24, and a turbine revolution sensor 25 is inputted into a CPU 20, and the control for a lock-up clutch 7 is carried out by calculating and outputting the duty ratio D of a duty solenoid valve 19 on the basis of these signals. In the slip rate control region in the transition from the converter region to the lock-up operation region, the initial stage in which the slip control shifts from ON to OFF, the duty ratio is feedback-controlled so that the engine revolution speed converges to an aimed value. |
