초록 ▼

A flow controller 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 res

A flow controller 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 being out-of-control, a setting time is added to a drive period according to the variation in the motor torque. Because the flow control valve can be reliably closed, and an out-of-control condition of the flow control valve can be prevented, an incorrect operation of the engine can be avoided.

대표청구항 ▼

[ We claim:] [1.] Flow control equipment for an engine, comprising a valve opening calculating means for calculating control parameters of fluid used in engine control, a flow control valve driven by a stepping motor for adjusting a controlled variable in accordance with an output signal correspondi

[ We claim:] [1.] Flow control equipment for an engine, comprising a valve opening calculating means for calculating control parameters of fluid used in engine control, a flow control valve driven by a stepping motor for adjusting a controlled variable in accordance with an output signal corresponding to the control parameters of said valve opening calculating means, and means for applying a control frequency signal different from a predetermined normal control frequency signal to said flow control valve when operation of said flow control valve is shifted.