Mazda Motor Corporation

Masakazu Kikuchi

Tsunehiro Mori

Yasunori Kanda

Koichi Hirata

Shuji Takuma

Yuta Takamura

Akira Sumitani

Motohiro Ariki

Yukiyoshi Fukuda

Masahiro Koizumi

Yasuhiro Sudou

Kouji Kubo

Kazuo Toyoda

Tetsuya Hanzawa

Chizuki Nakamura

Kazuya Nishimori

An engine cover covers an engine; and an intake pipe through which the air is introduced into the engine. An intake silencer is provided adjacent to the intake pipe and suppresses air pressure fluctuations of air in the intake pipe to reduce intake sound. A portion of the intake silencer is covered with the engine cover, and a remaining portion is exposed with respect to the engine cover. An advantage is that secondary noise generated by the intake silencer and a temperature increase of air suctioned into the engine are simultaneously suppressed.

Engine intake system

An engine piston structure includes: a piston (); a connecting rod () having a small end part () coupled to the piston (), and having a large end part () coupled to a crankshaft; a piston pin () through which the piston () and the small end part () of the connecting rod () are coupled together and which has a hollow cross section; and at least one dynamic vibration absorber () provided inside the piston pin () to reduce resonance of the piston (), the piston pin (), and the small end part () of the connecting rod () in combination with respect to the large end part () of the connecting rod () during a combustion stroke.

Piston structure for engine

Growing community of inventors

Aki-gun, Japan

Masakazu Kikuchi