FLOW RATE CONTROLLER OF INTERNAL COMBUSTION ENGINE

摘要

A flow control equipment in a flow control valve for an internal combustion engine. When the flow control valve is operated in a closing direction upon the occurrence of an abnormal state in the flow control valve such as sticking, resonance frequency vibration is applied to the valve so that a sliding resistance force of a screw mechanism can be lowered and the valve can be closed. To prevent problems with the flow control valve such as out-of-control, a setting time is added to a drive period according to variation in motor torque. Because the flow control valve can be closed with reliability and out-of-control of the flow control valve can be prevented, an incorrect operation of he engine can be avoided.