Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2005-07-05
2005-07-05
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...
C060S295000, C060S274000, C060S301000, C060S311000, C423S213200, C423S213500
Reexamination Certificate
active
06912847
ABSTRACT:
The invention provides low temperature NO2trap compositions useful for adsorbing NO2from a gas stream at lower temperatures, and releasing the NO2at higher temperatures. The low temperature trap compositions are useful for incorporation into a diesel exhaust system equipped with a soot filter. The NO2from the diesel exhaust can be stored when the exhaust temperature is cool, e.g., during startup and at times of low load, and released when the exhaust is at higher temperatures. The released NO2serves as an effective oxidant for the combustion of soot deposited on the soot filter. These temperatures are significantly lower than those required for the combustion of soot using O2as an oxidant. The methods of the invention thereby provide a method for regenerating the soot filter within operating temperature ranges typical of diesel engine exhaust systems.
REFERENCES:
patent: 4902487 (1990-02-01), Cooper et al.
patent: 5682740 (1997-11-01), Kawamura
patent: 5727385 (1998-03-01), Hepburn
patent: 5746989 (1998-05-01), Murachi et al.
patent: 5874057 (1999-02-01), Deeba et al.
patent: 5968861 (1999-10-01), Feeley et al.
patent: 5992142 (1999-11-01), Pott
patent: 6038854 (2000-03-01), Penetrante et al.
patent: 6051040 (2000-04-01), Peter-Hoblyn
patent: 6074976 (2000-06-01), Tabata et al.
patent: 6080377 (2000-06-01), Deeba et al.
patent: 6087295 (2000-07-01), Kharas et al.
patent: 6093378 (2000-07-01), Deeba et al.
patent: 6146602 (2000-11-01), Narula et al.
patent: 6167696 (2001-01-01), Maaseidvaag et al.
patent: 6182443 (2001-02-01), Jarvis et al.
patent: 6233927 (2001-05-01), Hirota et al.
patent: 6314722 (2001-11-01), Matros et al.
patent: 6367246 (2002-04-01), Hirota et al.
patent: 0 758 713 (1997-02-01), None
patent: 1 055 806 (2000-11-01), None
patent: 1 072 763 (2002-01-01), None
patent: 05 168857 (1993-07-01), None
patent: 06 079137 (1994-03-01), None
patent: 08338229 (1996-12-01), None
patent: WO 01/12320 (2001-02-01), None
Engelhard Corporation
Negin Richard A.
Tran Binh Q.
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