Nissan Motor Company Limited

Shyushi Koseki

Ken-ichi Koizumi

A jacket conduit which surrounds the exhaust gas at a portion equipped with an engine exhaust gas component sensor and is spaced from the exhaust gas conduit to define an air chamber on same and is formed with an air inlet opening which opens from the atmosphere into the air chamber for admitting atmospheric air thereinto and a flow control valve for controlling the ramming atmospheric air into the air chamber in accordance with the exhaust gas temperature and preferably one of the atmospheric temperature and the engine coolant temperature.

Temperature control system of an engine exhaust gas component sensor

In an internal combustion engine having a carburetor, a mixture ratio control system by means of which the fuel-to-air ratio of the combustible mixture to be produced in the carburetor is regulated toward a predetermined target value and furthermore the pressure in the fuel delivery circuit of the carburetor is temporarily increased or decreased at an incipient stage during a period of time for which the fuel-to-air ratio of the mixture as detected from the exhaust gases resulting from the mixture is reduced below or increased beyond the predetermined target value.

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Yokosuka, Japan

Shyushi Koseki