Air fuel mixture control apparatus for internal combustion engin

Details Air fuel mixture control apparatus for internal combustion engin Air fuel mixture control apparatus for internal combustion engin

1977-07-25

1979-10-16

Jordan, Charles T.

Internal-combustion engines

Noncompression

F02B 300

Patent

active

041709691

ABSTRACT:
In a closed loop air fuel mixture control system in which an exhaust gas sensor is provided to control the mixture ratio, a detector is provided to detect an operating condition of the engine to change the control from the closed mode to an open control mode when the exhaust gas sensor begins to fail under the sensed operating condition.

REFERENCES:
patent: 3916170 (1975-10-01), Norimatsu et al.
patent: 3919983 (1975-11-01), Wahl et al.
patent: 3938075 (1976-02-01), Reddy
patent: 3938479 (1976-02-01), Oberstadt
patent: 3949551 (1976-04-01), Eichler et al.

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