| 摘要 |
PURPOSE:To maintain responsiveness to suppress a shift up slip while suppressing the heat load of valves. CONSTITUTION:In a traction control device for vehicle in which an engine traction control and a brake traction control can be performed, a rear wheel ABS hydraulic system 30, a front wheel ABS hydraulic system 50, and a rear wheel TCS hydraulic system 70 are provided in a braking system 20 and, when a brake traction control is executed, a control valve 86 and a cut valve 71 are closed and a brake hydraulic pressure is controlled through pressure boosting valves 33 and 39 and pressure reducing valves 34 and 40. Also, when a vehicle travels on a low frictional road surface, if it is shifted up while the engine traction control only is executed, a motor 29 is turned on, valves 86 and 71 are closed, and the rear wheel TCS hydraulic system 70 is switched over to a state capable of supplying hydraulic pressure.
|
