| 摘要 |
PURPOSE:To prevent slippage at the time of accelerating by greatly reducing an engine output on detecting the slippage of driving wheels and after that, controlling a throttle opening so as to get a torque matched to a road surface or a slip condition. CONSTITUTION:In a traction controller 15, the difference between a driving wheel speed detected by wheel speed sensors 11, 12 and a reference speed Vphi is calculated as a slip quantity DV. When the slip quantity DV gets smaller than a specified value Vth, a correction torque TP calculated by multiplying the slip quantity DV by a coefficient Kp and a correction torque TS calculated by integration are subtracted from a reference torque TG calculated from the acceleration on a driven wheel speed DV which is detected by wheel speed sensors 13, 14, to calculate a target torque. By increasing the specified value Vth in accordance with the acceleration of the driven wheel speed VB, the judgement of slippage is relaxed at the time of driving on a rough road such as a gravel road to improve an accelerating property. |
