LOW-PRESSURE LOOP EGR DEVICES

摘要

Low-pressure EGR devices (47, 89) are provided with an electronic control unit (controller) (55) that controls an EGR valve (51) in such a manner that an EGR passage (49) closes when an off signal from a key switch (57) is inputted as a stop warning signal for warning that a supercharged engine (1) will stop, and then controls a nozzle actuator (27) in such a manner as to rotate a plurality of variable nozzles (25) in the narrowing direction.