| 摘要 |
PURPOSE:To improve the start accelerating property by detecting the friction coefficient between a tire and the road surface and the slip ratio during deceleration, estimating and storing the road surface condition based on the detection values, and controlling the driving torque in response to the road surface condition stored at the time of restart. CONSTITUTION:The slip ratio is detected by a slip ratio detecting means 14 based on the rotating speed of a driving wheel 11 detected by a wheel speed sensor 12 and the vehicle acceleration detected by an acceleration sensor 13, the road surface condition is calculated by a road surface condition calculating means 15 based on this slip ratio and the vehicle acceleration. This road surface condition is stored in a memory means 16 as a numerical value. At the time of restart after the vehicle is stopped, the driving force is calculated by a driving force control means 17 based on the road surface condition immediately before the stop. An actuator 18 is driven according to this calculation result, one of a throttle valve, a transmission, an ignition coil and an injector is controlled, the torque of the driving wheel is reduced, and the occurrence of a slip is suppressed. |
