| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the clogging of a filter 41 of an air cleaner 4 by causing air to reversely flow by reverse rotation of a compressor 51, removing dust from the filter 41, and discharging the dust to outside of an intake passage 2 in an engine 1 provided with a supercharger (turbocharger 5, for example).SOLUTION: An opening portion (secondary intake duct 44, for example) communicating with outside of an intake passage 2 in a shorter route than a route of a primary intake duct 42 is provided in a housing 40 of an air cleaner 4, and a valve (valve 45, for example) is provided to open or close this opening portion. A compressor 51 is reversely rotated in response to a stop command (ignition-off) of an engine 1 (step ST104) and the valve for the opening portion is opened (step ST103).SELECTED DRAWING: Figure 3 |
