Method for reducing the exhaust emissions from an engine system

Details Method for reducing the exhaust emissions from an engine system Method for reducing the exhaust emissions from an engine system

2006-09-12

2006-09-12

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, C060S285000

Reexamination Certificate

active

07104044

ABSTRACT:
The invention relates to a method for reducing the exhaust emissions during the cold start of an internal combustion engine (3). According to the method, a starter motor (4) is operated in parallel with the internal combustion engine (3) until the operating temperature of an exhaust gas catalytic converter (1) is reached, to thereby relieve the power demand on the internal combustion engine and thereby to minimize the production of pollutants. The heating of catalytic converter (1) can preferably be accelerated by retarded spark timing, by a delayed shift in automatic transmission (6) and/or by an electrical heater coupled to catalytic converter (1).

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