Kabushiki Kaisha Toyota Chuo Kenkyusho

Seiichi Kunitomi

Toshiyuki Tanaka

Takafumi Yamauchi

Yasuki Hirota

Kiyoshi Yamazaki

Hiroshi Miyagawa

Norihiko Setoyama

Takashi Kuzuya

Akira Shichi

Haruo Imagawa

Seiji Yamamoto

Shogo Sayama

Naoki Baba

Mitsuaki Ohtomo

Kazuto Ogasawara

Masatoshi Sakai

An internal combustion engine includes a first intake valve, a second intake valve, an accelerator open degree sensor that detects a load state, and an ECUthat controls the valve opening timing of the first and second intake valves and an amount of intake gas introduced to a combustion chamber from the first and second intake valves. When a load of a vehicle increases, the ECU reduces the ratio of the amount of intake gas from, among the two or more intake valves, the second intake valve having a later valve opening timing, whereas when the load decreases, the ECU increases the ratio.

Internal combustion engine

Growing community of inventors

Nagakute, Japan

Seiichi Kunitomi