Other

Toyota Jidosha Kabushiki Kaisha

Yasuhiro Ohtsubo

Hiroki Matsuoka

Tomihisa Oda

Daisuke Shibata

Naofumi Magarida

Kotaro Hayashi

Tomoyuki Ono

Takekazu Ito

Taro Aoyama

Souichi Matsushita

Shinobu Ishiyama

Masaaki Kobayashi

Jun Tahara

Tatsumasa Sugiyama

Yasuo Harada

Yukihiro Tsukasaki

Keiichi Mizuguchi

Masakuni Yokoyama

Mamoru Oki

Akihiro Negami

Hideyuki Kusatugu

An internal combustion is capable of switching, during engine operation, between a low-temperature combustion state in which an intake air with a high EGR rate is burned to operate the engine, and a normal combustion state in which an intake air with a low EGR rate is burned to operate the engine. In the internal combustion engine, a pilot injection is executed in addition to a main fuel injection, and furthermore the execution of the pilot injection is restricted during the engine operation with a combustion state switched to the low-temperature combustion state.

Internal combustion engine and control method of the same

A NOx catalyst in the exhaust passage of an internal combustion engine is capable of lean burn and adapted to release and reduce absorbed NOx by a reducing agent. Reducing agent supplier is provided in the exhaust passage on the upstream side of the NOx catalyst. A load detector detects the load of an internal combustion engine. Reducing agent addition controller controls the reducing agent addition period and the reducing agent addition interval based on the load of the internal combustion engine, whereby sufficient reducing agent is supplied to the NOx catalyst side independently of the operating condition.

Exhaust emission control device of internal combustion engine

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Toyota, Japan

Yasuhiro Ohtsubo