Hitachi, Ltd.

Nissan Motor Company Limited

Toru Nakagawa

Tadao Osawa

Masamitsu Okumura

Tokihiko Sakuma

Takashige Kohno

Takashi Mihashi

An air-fuel ratio control device for an internal combustion engine equipped with a plurality of variable venturi type carburetors each having a slow system, in which the flow rate of air supplied to the slow systems of the carburetors is controlled depending on the engine operation parameters including, for example, the temperature of intake air, temperature of engine oil and atmospheric pressure to improve the rate of atomization of fuel, thereby improving the idling performance of the engine and therefore improving the fuel consumption of the engine.

Air-fuel ratio control device for internal combustion engines

A carburetor having an altitude effects compensation mechanism comprising means disposed in the fuel passage from the float chamber of the carburetor to the Venturi for limiting the rate of fuel flow, a bellows adapted to be displaced by responding to changes in atmospheric pressure, and means for transmitting a displacement of the bellows to the limiting means. The bellows is immersed in the fuel in the float chamber.

Carburetor having an altitude-effects compensation mechanism and a

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Mito, Japan

Toru Nakagawa