Honda Motor Co., Ltd.

Masatatsu Enami

Takeshi Honda

Mikio Hara

Yasushi Matsuura

Akihiro Katsuura

Takayuki Namai

Shinji Wakamoto

Osamu Watanabe

An intake manifoldincludes: a surge tankthat is connected on an upstream side thereof to a throttle valve; multiple branch pipesthat are arranged side by side in a longitudinal direction of the surge tankand respectively connected to cylinders; and a PCV chamberthat is provided upstream of a central part in the longitudinal direction of the surge tank. The intake manifold includes: a blowby gas introduction portthat is designed to introduce blowby gas into the PCV chamber; and a blowby gas exhaust portthat is designed to discharge the blowby gas from the PCV chamberinto the surge tank, and the blowby gas exhaust portis located at a position higher than the blowby gas introduction port

Intake manifold for engine

An intake manifoldincludes: a blowby gas introduction portthat is configured to introduce blowby gas into a PCV chamber; a blowby gas exhaust portthat is configured to discharge the blowby gas from the PCV chamberinto a surge tank; and a drain holethat is configured to discharge water contained in the blowby gas, from the PCV chamberinto the surge tank. A bottom wallof the surge tankincludes protruding partsthat protrude upward, the blowby gas exhaust portis located upstream of the most upstream side protruding partlocated on the most upstream side, and the drain holeis located downstream of the most upstream side protruding part.

An intake apparatus for an internal combustion engine includes a plurality of branch pipes connected at downstream ends thereof to an engine main body, an intake chamber to which upstream ends of the branch pipes are connected, and a common intake air introducing part connected to the center of the intake chamber in a cylinder arrangement direction. The intake chamber includes a projecting part projecting toward the engine main body relative to the common intake air introducing part. An EGR introducing passage is connected to the center of the projecting part in the cylinder arrangement direction. A downstream end of the EGR introducing passage is directed toward a wall of the projecting part on the common intake air introducing part side.

Growing community of inventors

Wako, Japan

Masatatsu Enami