Air/fuel ratio control system in internal combustion engine

Details Air/fuel ratio control system in internal combustion engine Air/fuel ratio control system in internal combustion engine

F - Mech Eng,Light,Heat,Weapons

02

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123/67, 341/38.1

F02M 1/10 (2006.01) F02D 35/00 (2006.01) F02M 23/04 (2006.01)

Patent

CA 1044093

ABSTRACT The system is associated with an engine equipped with a carburetor and includes a fuel supply conduit and/or air supply conduit each opening at its end into an intake pipe at a location downstream of the throttle valve, an electromagnetic valve for each conduit arranged to control a fluid flow through each conduit, an exhaust gas sensor disposed in the exhaust system, and a control circuit which operates the electro- magnetic valve such that the feed rate of fuel or air through each conduit is varied to compensate for any deviation indicated by a signal from the sensor of the air/fuel ratio of an air-fuel mixture consumed in the combustion chamber from a predetermined ratio.

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