Nissan Motor Company Limited

Shuya Nambu

Kenji Masaki

Hidehiro Minami

Ryoichi Nakagawa

Yukio Miyamori

A multi cylinder torch ignition internal combustion engine including a main combustion chamber and an auxiliary combustion chamber for each is cylinder designed for proper air-fuel ratios of mixtures for both types of combustion chambers. In order to effectively prevent uneven distribution of air-fuel mixture in each of the engine cylinders irrespective of complicated configuration of the intake manifold of the engine, an intake valve is provided in each of the main combustion chambers and the auxiliary combustion chambers. The latter communicate with the main combustion chambers and have an ignition plug therein. An independent intake passageway is between each intake valve and the intake manifold, and a fuel injection device is disposed in each of the intake passageways. By this arrangement, a proper air-fuel mixture ratio can be individually maintained in the main combustion chamber and the auxiliary combustion chamber.

Fuel feed control system of internal combustion engine

A device which modulates intake manifold vacuum with venturi vacuum to actuate an exhaust gas recirculation control valve.

Exhaust gas recirculation control device

Exhaust gas is passed through a thermal reactor at high exhaust gas temperature and flow rate, and through a catalytic converter at low values of these parameters. Alternatively, exhaust gas may be passed through the thermal reactor at high values of the parameters, and through both the thermal reactor and the catalytic converter at low values.

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Yokohama, Japan

Shuya Nambu