Air-fuel ratio control system for an internal combustion engine

Details Air-fuel ratio control system for an internal combustion engine Air-fuel ratio control system for an internal combustion engine

1976-09-02

1978-11-07

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having sensor or indicator of malfunction, unsafeness, or...

60285, 123119EC, 123119LR, F02B 7510

Patent

active

041239016

ABSTRACT:
Under normal running condition of an internal combustion engine with a thermal reactor, the engine is fed with a relatively rich air-fuel mixture for regulating the concentration of unburned combustible compounds, such as hydrocarbons (HC) and carbon monoxide (CO) in the exhaust gases emitted therefrom, in a manner that the thermal reactor effectively functions, and under high speed heavy load condition of the engine wherein the exhaust gas temperature becomes remarkably high, the engine is alternately fed with a relatively rich mixture and a relatively lean mixture in accordance with the operating cycles of the engine for not only achieving the improved fuel economy but also protecting the thermal reactor from heat damage.

REFERENCES:
patent: 3732696 (1973-05-01), Masaki
patent: 3827237 (1974-08-01), Linder
patent: 3921612 (1975-11-01), Aono
patent: 3982393 (1976-09-01), Masaki
patent: 3986352 (1976-10-01), Casey

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