CONTROL DEVICE FOR EXHAUST GAS RECIRCULATION VALVE

摘要

A control device for an exhaust gas recirculation valve, having an exhaust gas circulation path (20) for interconnecting an intake path (3) of an engine (1) and an exhaust gas path (10) and introducing a part of exhaust gas into the intake path (3), an EGR valve (30) installed in the exhaust gas circulation path (20), and a control unit (50) for controlling the engine (1) and the EGR valve (30). The control unit (50) has an abnormality detection function for detecting an abnormality of the EGR valve (30), and also has a forcible valve open/close function for forcibly opening and closing, based on the abnormality detection by abnormality detection function, the EGR valve (30) independent of normal open/close operation.