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

1975-12-01

1978-05-09

Lazarus, Ronald H.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123127, 123140MC, 261DIG74, 123124B, F02B 3300

Patent

active

040881008

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 one 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 electromagnetic 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.

REFERENCES:
patent: 2657913 (1953-11-01), Raymor
patent: 3759232 (1973-09-01), Wahl
patent: 3827237 (1974-08-01), Linden
patent: 3890946 (1975-06-01), Wahl

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