| 摘要 |
PURPOSE:To prevent an oversteering condition in an early stage by setting limited value of acceleration from oversterring characteristic in response to the frictional coefficient on a road surface based on longitudinal acceleration and decreasing driving force when the detected lateral acceleration exceeds the limited value. CONSTITUTION:An acceleration speed sensor 21 which detects longitudinal acceleration Gx and lateral acceleration Gy of a four-wheel drive is provided, and the output signal thereof together with the output signals of a wheel speed sensor 11 and a throttle sensor 37 are inputted into a control unit 40. A characteristic map in which oversteering characteristics are set as characteristic lines in response to frictional coefficient mu on road surface based on longitudinal acceleration Gx, and the lateral acceleration Gy is stored in the memory area 40A of a memory circuit in the control unit 40, and a limited value of the lateral acceleration in which the four-wheel drive is under the oversteering condition is set based on the longitudinal acceleration, and when the lateral acceleration exceeds the limited valve during turning acceleration, a driving force control processing which decreases the driving force is performed. |
