| 摘要 |
PURPOSE:To eliminate acceleration slipping of driving wheels in an early time by selecting a sub-throttle control constant according to a detected result of a gear position at the time of generating traction, and controlling a sub-throttle valve by a sub-throttle target opening calculated therefrom. CONSTITUTION:A main throttle valve 46 which interlocks to an acceleration pedal 45, and a sub-throttle valve 48 driven by a step motor 47 are provided inside the intake passage 44 of an engine 41. Drive torque is decreased by controlling opening, of the sub-throttle valve 48, namely the engine output, by a controller 49, so as to eliminate slipping of wheels at the time of slipping the wheels by acceleration. In this case, wheel speed sensors 7, 8, and a gear position sensor 43 are provided. A throttle control constant is selected according to the detected gear position, and a throttle target opening is calculated based on the control constant, driven wheel speed and the acceleration thereof so as to control the opening of the sub-throttle valve 48. |
