Air-fuel ratio control adjusting system in an internal combustio

Details Air-fuel ratio control adjusting system in an internal combustio Air-fuel ratio control adjusting system in an internal combustio

1975-12-03

1978-02-28

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60285, 60290, 60293, F02B 7510

Patent

active

040758346

ABSTRACT:
Secondary air is fed into the engine exhaust gas passageway at a position upstream of an oxygen sensor to cause the electric air-fuel ratio control device and the air-fuel mixture generator to provide an air-fuel mixture having an air-fuel ratio lower than a set desired air-fuel ratio during idle and slow speed running of the engine.

REFERENCES:
patent: 3738109 (1973-06-01), Tatsutomi
patent: 3745768 (1973-07-01), Zechnall
patent: 3751915 (1973-08-01), Ranft
patent: 3832848 (1974-09-01), Scholl
patent: 3885540 (1975-05-01), Stadler
patent: 4007718 (1977-02-01), Laprade

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