Diesel exhaust system variable backpressure muffler

Details Diesel exhaust system variable backpressure muffler Diesel exhaust system variable backpressure muffler

2008-03-04

2008-03-04

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...

C060S274000, C060S287000, C060S292000, C060S295000, C060S322000, C060S324000, C181S237000, C181S254000

Reexamination Certificate

active

11382772

ABSTRACT:
The invention concerns diesel particulate filter regeneration in an exhaust system of a vehicle having a diesel engine. The particulate filter regeneration is selectively accomplished by actuating a particulate filter backpressure valve located downstream of the diesel particulate filter. Exhaust noise is attenuated for both normal driving and regeneration modes of operation by directing the exhaust flow through different flow paths in a muffler downstream of the diesel particulate filter.

REFERENCES:
patent: 4264344 (1981-04-01), Ludecke et al.
patent: 4677823 (1987-07-01), Hardy
patent: 4916897 (1990-04-01), Hayashi et al.
patent: 5357755 (1994-10-01), Gillingham et al.
patent: 6588203 (2003-07-01), Hirota et al.
patent: 6739579 (2004-05-01), Rim

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