| 摘要 |
PURPOSE:To always obtain appropriate reducing function of driving force at generating slip regardless of atmospheric pressure by correcting a control quantity of an engine output control means so as to gradually enlarge accompanied with a fall of atmospheric pressure. CONSTITUTION:When a slip condition is detected from difference of rotating speed of driving wheels (a right front wheel 3 and a left front wheel 4) and driven wheels (a right rear wheel 5 and a left rear wheel 6), a traction control unit 33 respectively outputs control signals for reducing the slip to a brake control unit 31 and an engine output control unit 32. Hereby, prescribed brake force is applied on the driving wheels 3, 4, engine output is lowered by a prescribed quantity, the driving force transmitted from the respective driving wheels 3, 4 to the road surface side is reduced, and the slip is prevented. In the above- stated constitution, when the atmospheric pressure falls, the reducing control quantity of engine output by the engine output control unit 32 is further corrected on the increase side. |
