CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE HAVING SUPERCHARGER

摘要

Disclosed is a control device that is applied in an internal combustion engine (1) equipped with: a turbo-supercharger (6) in which a movable vane mechanism (17) capable of altering the amount of restriction on the flow passage of intake air delivered from a compressor wheel (12) by changing the position of vanes (18, 54) has been disposed in a compressor (6a), a low pressure EGR passage (7) that connects to an exhaust passage (4) and a section upstream of the compressor (6a) in an intake passage (3), and a low pressure EGR valve (8) that opens and closes the EGR passage (7), wherein the control device assesses whether or not the vane (18) is fixed, and in cases in which the control device has assessed that the vane (18) is fixed, the operating mode of the internal combustion engine (1) is switched to a safe operating mode in which the engine output of the internal combustion engine (1) is restricted, while the low pressure EGR valve (8) is opened in a manner such that the amount of exhaust gas recirculated to the intake passage (3) via the low pressure EGR passage (7) increases.