Internal combustion engine having a secondary air pump

Details Internal combustion engine having a secondary air pump Internal combustion engine having a secondary air pump

2007-04-18

2011-10-11

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...

C060S289000, C060S299000, C060S304000

Reexamination Certificate

active

08033105

ABSTRACT:
An internal combustion engine includes an exhaust-gas system with n>1 exhaust-gas flow configurations, wherein n is an integer. The exhaust-gas flow configurations are at least partly separated from one another and each of the exhaust-gas flow configurations includes at least one catalytic converter. The internal combustion engine includes a secondary air supply system with at least one secondary air pump and at least one secondary air valve. The at least one secondary air pump is connected, via the at least one secondary air valve, to at most n−1 of the exhaust-gas flow configurations upstream of the at least one catalytic converter of the at most n−1 of the exhaust-gas flow configurations. The remaining ones of the exhaust-gas flow configurations are separated from the secondary air supply system.

REFERENCES:
patent: 4056933 (1977-11-01), Nohira et al.
patent: 4215542 (1980-08-01), Kobayashi et al.
patent: 6041593 (2000-03-01), Karlsson et al.
patent: 2005/0244285 (2005-11-01), Koyama
patent: 26 17 245 (1977-07-01), None
patent: 100 65 963 (2002-07-01), None
patent: 0 983 424 (2003-05-01), None
Kind, English Abstract of DE 10 065 963 A1; Jul. 4, 2002.

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