Oxygen pumping device for control of the air fuel ratio

Details Oxygen pumping device for control of the air fuel ratio Oxygen pumping device for control of the air fuel ratio

1987-02-20

1989-06-27

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

204 1T, 204406, F02D 4114

Patent

active

048419346

ABSTRACT:
A method of controlling the air fuel ratio of an internal combustion engine includes positioning a two cell oxygen pumping device in the exhaust gas of the engine. A pumping current is applied to a pumping cell and an EMF is sensed across a sensor cell. The sensed EMF is compared to reference voltage and an error signal is generated. The air fuel ratio is changed in response to the error signal so as to reduce the absolute magnitude of the error signal.

REFERENCES:
patent: 4169440 (1979-10-01), Taplin et al.
patent: 4272329 (1981-06-01), Hetrick et al.
patent: 4272330 (1981-06-01), Hetrick
patent: 4272331 (1981-06-01), Hetrick
patent: 4499880 (1985-02-01), Miki et al.
patent: 4615787 (1986-10-01), Yamada et al.
"Honda LEAN-BURN Concept", Apr. 25, 1986 at Luxemburg International Conference.

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