Mazda Motor Corporation

Mazda Motor Corporat Ion

Toshihiko Hirata

Hidesaku Ebesu

Ryotaro Nishida

Mitsunori Wasada

Shuhei Tsujita

Tatsuya Koga

Jiro Kato

Keita Sakamoto

A bottom surface of a surge tank has such a shape that, in a vehicle-mounted state, the bottom surface is positioned below a lower surface at an upstream end of each of a plurality of independent passages and comes closer to the lower surface at the upstream end of each of the plurality of independent passages in a vertical direction farther away from a connected portion between the surge tank and a third passage in a cylinder array direction.

Air intake passage structure for multi-cylinder engine

An air intake passage () has a third passage () that connects an intercooler () and a bottom portion of a surge tank () such that the intercooler () is positioned below the surge tank (). A pair of wall portions () configured to catch moisture is formed in a section from an upstream end portion of the third passage () to a connected portion between said third passage () and the surge tank ().

Air intake passage structure for engine

An engine includes fuel system components provided on a cylinder head, a purge control valve that controls an amount of evaporated fuel purged to a portion of an intake passage on a downstream side of a throttle valve, and intake pipes that form the portion of the intake passage on the downstream side of the throttle valve and extend in a cylinder array direction, in which the purge control valve is disposed in front of the intake pipes and the fuel system components are disposed on an opposite side of the purge control valve across the intake pipes in vehicle front view or vehicle side view.

Engine

The present disclosure aims to stabilize, in an engine with a supercharger, a detection result of an intake air temperature sensor interposed between the supercharger and an intercooler. A gas outlet of a supercharger and a gas inlet of an intercooler are connected together via a second passage. The second passage includes, in its middle position, a narrow region with a smaller cross-sectional area than the part of the second passage extending from an upstream end of the second passage to the middle position. The narrow region is provided with the intake air temperature sensor configured to detect the gas temperature in the narrow region.

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Hiroshima, Japan

Toshihiko Hirata