Toyota Jidosha Kabushiki Kaisha

Souichi Matushita

Shinya Hirota

Toshiaki Tanaka

Takamitsu Asanuma

Kazuhiro Itoh

Koichiro Nakatani

Koichi Kimura

Tatsuo Kobayashi

Kotaro Hayashi

Toshimi Kashiwagura

Shizuo Abe

Fumiaki Hattori

Yoshihiro Nomura

Yukihiro Tsukasaki

Taketoshi Fujikawa

A device for purifying the exhaust gas of an internal combustion engine is disclosed. The device includes a particulate filter arranged in the exhaust system, which carries a catalyst for absorbing and reducing NO. The catalyst absorbs NOwhen the air-fuel ratio in the surrounding atmosphere thereof is lean and releases the absorbed NOto purify NOby reduction when the air-fuel ratio is stoichiometric or rich. The device further includes a catalytic apparatus for purifying NOarranged in the exhaust system upstream of the particulate filter, which has an oxidation function.

Device for purifying the exhaust gas of an internal combustion engine

A direct fuel injection-type spark-ignition internal combustion engine is disclosed. The engine comprises a spark plug, a fuel injector and a cavity formed on the top surface of the piston. The cavity has a bottom wall, a spark plug side wall and a fuel injector side wall. The fuel injector injects fuel toward the bottom wall of the cavity in stratified charge combustion. The fuel mainly proceeds toward the spark plug side wall of the cavity along the bottom wall, is deflected by the spark plug side wall and is led to the vicinity of the spark plug. In the engine, the fuel injector side wall of the cavity is provided with a deflecting portion. If a part of the injected fuel proceeds toward the fuel injector side wall along the bottom wall of the cavity, that part of the fuel is led to the vicinity of the spark plug by the deflecting portion.

Direct fuel injection-type spark-ignition internal combustion engine

Growing community of inventors

Numazu, Japan

Souichi Matushita