Patent ID: 9670881
Date: 2017-06-06
CPC Classifications: F02B,F02M,F04D,Y02T

Claim:
1. A supercharger-equipped internal combustion engine, comprising: a supercharger which includes a centrifugal compressor provided with an intake passage and having an impeller section for housing a compressor impeller; an exhaust gas recirculation passage which includes an exhaust gas recirculation introduction section connected with the intake passage and through which recirculated exhaust gas flows; a blow-by gas passage which includes a blow-by gas introduction section connected with the intake passage and through which blow-by gas flows; and a gas guide member which extends to an inside of an inlet section of the centrifugal compressor or a section immediately before the inlet section or the impeller section of the centrifugal compressor, wherein the recirculated exhaust gas and the blow-by gas are introduced to an intake system in such a manner as to flow into the centrifugal compressor via the exhaust gas recirculation introduction section and the blow-by gas introduction section, and wherein the gas guide member guides the recirculated exhaust gas and the blow-by gas toward the centrifugal compressor so that the recirculated exhaust gas and the blow-by gas are not mixed with each other until the recirculated exhaust gas and the blow-by gas enter into the impeller section of the centrifugal compressor and so that the recirculated exhaust gas and the blow-by gas are suctioned into the impeller section from different sections in a circumferential direction of the compressor impeller.