Control system for regulating air/fuel ratio

Details Control system for regulating air/fuel ratio Control system for regulating air/fuel ratio

F - Mech Eng,Light,Heat,Weapons

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341/38.13

F02M 51/00 (2006.01) F02D 35/00 (2006.01) F02D 41/14 (2006.01) G05D 11/13 (2006.01)

Patent

CA 1118076

?-BWL ABSTRACT In a system including a carburetor for regulating the air/fuel ratio fed to an internal combustion engine, a sensor is positioned in the exhaust pipe to provide a control signal indicating the amount of some exhaust gas constituent, such as oxygen. A control circuit is provided to regulate the position of a carburetor component, to change the air/fuel ratio as a function of the control signal derived from the exhaust gas sensor. This carburetor component is continually displaced, either toward a richer or leaner mixture condition, thus in effect integrating the signal from the exhaust gas sensor which ultimately regulates the air/fuel ratio. Operation of the control circuit is modified as a function of the engine speed and the engine temperature.

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