Method for warm-up catalyst of exhaust gas treatment device

Details Method for warm-up catalyst of exhaust gas treatment device Method for warm-up catalyst of exhaust gas treatment device

2005-08-30

2005-08-30

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S278000, C060S280000, C060S285000, C060S286000

Reexamination Certificate

active

06935100

ABSTRACT:
A method of controlling an internal combustion engine for warm-up of catalyst of an exhaust gas treatment device is disclosed. The method comprises generating a warm-up demand for heating the catalyst subject to constraint on stable combustion. Based on the warm-up demand, a reduction in excess air ratio is determined. A desired value in excess air ratio is modified by the reduction to provide a modified desired value in excess air ratio. Based on the reduction, a desired value in EGR rate is modified to provide a modified desired value in EGR rate. Based on the modified desired value in EGR rate, an EGR command signal is determined.

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patent: 1 167 727 (2002-01-01), None
patent: 2000-18024 (2000-01-01), None
Patent Abstracts of Japan, vol. 2000, No. 04, Aug. 31, 2000, JP 2000-018024.

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