Mazda Motor Corporation

Kenji Takami

Ken Yoshida

Taketoshi Yamauchi

Jiro Kato

Masayoshi Higashio

Mitsunori Wasada

Ryo Yamamoto

Kensuke Ashikaga

Haruna Yanagida

Kazuaki Tanaka

Katsuya Rokuyama

An exhaust gas recirculation (EGR) passage is connected with an intake passage (a bypass passage bypassing a supercharger) of an engine. The EGR passage includes, in a position close to a connection port to the intake passage, an expanding portion in which a passage cross-sectional area expands and which lowers a flow speed of EGR gas so as to reduce an uneven flow, in the connection port, of the EGR gas flowing into the intake passage.

Air intake device for engine

An intake passage of an engine includes a throttle valve, a supercharger, and a bypass passage connecting an upstream side with a downstream side of the supercharger and opening when the supercharger is not acting. When the supercharger is not acting, the intake passage generates forward flows in which intake air flows from the throttle valve toward the supercharger and bypass-directed flows in which the intake air is reversed due to blockage of forward movement by the supercharger and flows from the supercharger side toward a connection port, of the bypass passage, opening in the intake passage. An evaporated fuel introduction opening leading evaporated fuel produced in a fuel tank to the intake passage opens in a wall surface, on which the bypass-directed flow is generated, in the intake passage.

Evaporated fuel treatment device for engine

Growing community of inventors

Aki-gun, Japan

Kenji Takami