Electronic fuel control system for internal combustion engine

Details Electronic fuel control system for internal combustion engine Electronic fuel control system for internal combustion engine

F - Mech Eng,Light,Heat,Weapons

02

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354/24, 341/38.1

F02D 28/00 (2006.01) F02D 41/14 (2006.01) F02D 41/26 (2006.01) F02P 5/15 (2006.01)

Patent

CA 1127267

ELECTRONIC FUEL CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE Abstract of the Disclosure A signal corresponding to an oxygen concentration in an exhaust gas of an internal combustion engine, as detected by an O2 sensor, is applied to a control logic circuit after analog conversion. A duty ratio of a pulse signal for keeping the optimum air-fuel ratio corresponding to the running state of the engine is calculated by use of the detection signal and in accordance with a program stored in a ROM in advance. The control pulse having the duty ratio is used for the switching control of a solenoid valve regulating the air-fuel ratio of the mixture generated by the carburettor.

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