Method and apparatus for rapid exhaust catalyst light-off

Details Method and apparatus for rapid exhaust catalyst light-off Method and apparatus for rapid exhaust catalyst light-off

2006-10-10

2006-10-10

Tran, Binh Q. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S289000, C060S291000, C060S292000, C060S293000, C060S303000, C123S00100A, C123S003000

Reexamination Certificate

active

07117668

ABSTRACT:
An internal combustion engine is supplied with reformate from a hydrocarbon reformer at engine start-up and during engine warm-up. The reformate fuel mixture is fuel-lean at start-up to ensure that all the fuel is burned while the exhaust converter is thermally non-functional. Shortly after start-up, the mixture is changed to be fuel-rich, providing unburned reformate fuel in the exhaust stream. During start-up and warm-up, the output of an air pump is controllably divided between the reformer (primary air) and the engine exhaust system (secondary air). Unburned reformate from the engine and secondary air from the air pump ignite and thereby rapidly heat the converter. Gasoline or diesel fueling of the engine by fuel injection is preferably delayed until the engine and the converter both reach operating temperatures, whereupon the engine is fueled by fuel injection and further reforming is terminated.

REFERENCES:
patent: 3828736 (1974-08-01), Koch
patent: 3915125 (1975-10-01), Henkel et al.
patent: 4125090 (1978-11-01), Masunaga et al.
patent: 4299089 (1981-11-01), Takeda
patent: 5357908 (1994-10-01), Sung et al.
patent: 5943859 (1999-08-01), Kawamura
patent: 6041593 (2000-03-01), Karlsson et al.
patent: 6044643 (2000-04-01), Ittner et al.
patent: 6230494 (2001-05-01), Botti et al.
patent: 6526950 (2003-03-01), Ito et al.
patent: 6609582 (2003-08-01), Botti et al.
patent: 6997142 (2006-02-01), Wakao et al.
patent: 102 12 021 (2003-10-01), None
patent: 1 275 839 (2003-01-01), None
patent: 1 300 558 (2003-04-01), None
patent: 99/04145 (1999-01-01), None
European Search Report dated Jun. 15, 2005.

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