TRACTION CONTROLLING METHOD FOR VEHICLE

摘要

PURPOSE:To release a driver from a abnormal or tardy feeling by determining the speed changing timing of an automatic transmission on the basis of the pedalling amount of an accelerator pedal and the speed of driven wheel. CONSTITUTION:All rotational frequency Ne, vehicle speed EVv corresponding to said rotational frequency, reference speed Vr and threshold value Vs of an engine are input to a control logic circuit 13 and the output of a sensor 15 representing the pedalling amount (a) of an accelerator pedal 14 is also input to same. A throttle driving mechanism 16 is driven on the basis of these input signals to control a throttle and the engine output in the start and acceleration of a vehicle. On the other hand, the respective actuators such as a clutch actuator 17 for turning on and off a clutch, select actuator 18 and shift actuator 19 are constituted hydraulically to be operated in a control logic circuit 3 through a plurality of switch valves and flow path change-over valves 20a-20n, so that a transmission can be changed over to first-fifth speed and any gear positions of N and R.