| 摘要 |
PURPOSE: To improve fuel consumption by way of increasing a proportion to make lock-up in a connected state by controlling the connecting condition of a lock-up clutch at the time of cutting out and connecting a speed changing clutch by way of minutely dividing it by a gear ratio of a transmission, car speed, the number of rotation of a transmission input shaft, etc. CONSTITUTION: An engine 1, a torque converter 2 with a lock-up clutch and a clutch for speed changing and a transmission 3 are sequentially connected, and a shift lever 4 is connected to the transmission 3. Additionally, a lock-up solenoid 5, a clutch solenoid 6 for speed changing, etc., are connected to a computer 11, and output signals from the computer 11 are respectively output to them. Thereafter, when the connection condition of the lock-up clutch at the time of cutting out the speed changing clutch and connecting it is set, for example, as lower than 10km/h for car speed and lower than 1300rpm for the input number of rotationer minute of the transmission, etc., the lock-up clutch is cut out for the prevention of engine stop. Additionally, at the time when the car speed exceeds 10km/h, a gear position of the transmission 3 is judged, and it is controlled by dividing a gear ratio large and small. |
