| 摘要 |
PROBLEM TO BE SOLVED: To prevent impairment of smooth control even in case of cooling where flow resistance of working oil is high by correcting a target value of hydraulic pressure given to a hydraulic clutch to become lower in accordance with oil temperature at the time when oil temperature is lower than a specified value by detecting oil temperature of working oil. SOLUTION: A torque distribution ratio T1 is computed by a torque distribution ratio computing means 41 from turning quantity KG given by steering angle×car speed and driving force torque XGF of an axle. In the meantime, a torque limit coefficient EN2 corresponding to current oil temperature MTMP is found from a torque limit coefficient map 43 given by a straight proportional expression so that it becomes 0 at the time when oil temperature is -30 deg.C and 1.0 in a region of more than 30 deg.C. Thereafter, a corrected torque distribution ratio TOBJ suitable for a current driving status is provided by multiplying the torque distribution ratio T1 with the torque limit coefficient EN2. At the time of cooling, it is possible to carry out control with in a range of discharge capacity of a hydraulic pump at the time.
|
