| 摘要 |
<p>PURPOSE:To perform constantly appropriate torque distribution by selecting one control system to execute control out of plural control systems according to the road surface state when torque required for torque distribution change cannot be obtained by the enlargement of engine output. CONSTITUTION:A torque distribution control means 16 having plural control systems for setting a torque distribution ratio to four wheels is provided to control a torque distribution changing means 10 and an engine output changing means 15 on the basis of these control systems according to the operating state. As plural control systems, there are provided a longitudinal distribution control system 17 for changing the torque distribution of longitudinal wheels according to the vehicle operating state, and a lateral distribution control system 18 for changing the torque distribution of lateral wheels. There is also provided a control system selecting means 19. Accordingly, when torque required for torque distribution change performed by plural control systems cannot be obtained by engine output change performed by an output changing means 15, the control system selecting means 19 selects the control system to execute control out of plural control systems according to the value of the friction coefficient of the road surface detected by a friction coefficient detecting means 20.</p> |
