Throttle valve controller for internal combustion engine

摘要

A throttle valve controller for use with an internal combustion engine has construction advantageous in terms of cost and enables, by a fail-safe function, "abnormal-state auxiliary driving" by the operation of an accelerator pedal in a case where an abnormality such as a failure has occurred in the actuator driving system. The risk of occurrence of a serious accident such as self-speeding of the vehicle is thereby eliminated substantially completely. A flexing driving force transmission mechanism or a fluid driving force transmission mechanism is provided at a driving force connection between a member displaced with the accelerator pedal operation and an opening/closing drive member of a throttle valve. The flexing driving force transmission mechanism absorbs the difference between the opening of the throttle valve controlled with the actuator and the opening to which the throttle valve is to be set by the accelerator pedal operation.