Nissan Motor Company Limited

Renault S.a.s.

Yuta Kanashima

Takayuki Hamamoto

Takanobu Sugiyama

Ryo Uchida

Hidehiro Fujita

The intake air cooling deviceA constitutes a heat exchange device that performs heat exchange of the intake air of the internal combustion engine. The intake air cooling deviceA includes the heat exchange partA configured to perform heat exchange between the cooling liquid W that is introduced thereto and the intake air that is passing therethrough, and the intake air control valveconfigured to perform control of the intake air that passes through the heat exchange partA. The cooling liquid introduction portof the heat exchange partA and the intake air control valveare provided at positions opposing each other with respect to the heat exchange partA.

Heat exchange device

In an in-line four-cylinder internal combustion engine, exhaust ports () of cylinders #2 and #3 merge together inside a cylinder head and become open as one flat collective exhaust port (). An exhaust manifold () includes separate individual exhaust pipes () for cylinders #1 and #4 and a collective exhaust pipe () for cylinders #2 and #4. Tip ends of these three exhaust pipes are connected to a catalytic converter (). An equivalent diameter of the collective exhaust port () is larger than equivalent diameters of the exhaust ports () before merging. A short diameter of the collective exhaust port () is smaller than or equal to the equivalent diameters of the exhaust ports ().

Growing community of inventors

Kanagawa, Japan

Yuta Kanashima