Control system for an automotive driving system including an engine throttle valve and a stepless transmission

摘要

An automotive driving control system comprises a stepless transmission provided between the engine and the driving wheels, a transmission control for controlling the transmission ratio of the stepless transmission, a throttle valve driver for driving the throttle valve of the engine, an accelerator position sensor for detecting the amount of depression of the accelerator pedal, and a control for controlling the transmission control and the throttle valve driver. The control controls the transmission control and the throttle valve driver to respectively control the opening degree of the throttle valve and the transmission ratio of the stepless transmission so that engine output corresponding to the amount of depression of the accelerator pedal is obtained. There is further provided an acceleration requirement detector for detecting an acceleration requirement by way of change in the amount of depression of the accelerator pedal, the rate of change of the same (i.e., depressing speed of the accelerator pedal), or the amount or the rate of change in state of the vehicle due to the operation of the accelerator pedal such as negative pressure in the intake passage. Said control is arranged to control said transmission control and/or said throttle valve driver so that engine output is made maximum when the acceleration requirement is larger than a predetermined value.