Air injection control for preheated catalysts

Details Air injection control for preheated catalysts Air injection control for preheated catalysts

1993-12-27

1995-02-21

Lazarus, Ira S.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60284, 60289, 60300, F01N 320

Patent

active

053904885

ABSTRACT:
When a preheater elevates internal combustion engine exhaust gas treatment means temperature above a threshold temperature and prior to and during engine cranking, supplemental air is provided to an internal combustion engine exhaust gas path at a controlled rate responsive to parameters indicating excess engine emission levels during an engine startup period.

REFERENCES:
patent: H1113 (1992-12-01), Yoshizaki
patent: 3779015 (1973-12-01), Maruoka
patent: 3823555 (1974-07-01), Cole
patent: 4406120 (1983-09-01), Irish
patent: 5177961 (1993-01-01), Whittenberger
patent: 5257501 (1993-11-01), Wataya

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