Means for preventing exhaust emission from being deteriorated in

Details Means for preventing exhaust emission from being deteriorated in Means for preventing exhaust emission from being deteriorated in

1993-08-16

1995-03-28

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60276, 60277, 60289, 60290, F01N 322

Patent

active

054005914

ABSTRACT:
In case of trouble of a secondary air supply system, supply of an additional amount of fuel to an intake system and supply of secondary air to an exhaust system at the time of a particular engine operating condition such as an idling condition are stopped for regulating an air-fuel ratio closer to a stoichiometric value.

REFERENCES:
patent: 5060474 (1991-10-01), Aramaki
patent: 5119631 (1992-06-01), Kayanuma
patent: 5140810 (1992-08-01), Kuroda

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