Exhaust gas purifying method and apparatus for internal...

Details Exhaust gas purifying method and apparatus for internal... Exhaust gas purifying method and apparatus for internal...

2005-03-15

2005-03-15

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, C060S276000, C060S285000, C060S295000, C060S311000

Reexamination Certificate

active

06865885

ABSTRACT:
An exhaust gas purifying method for an internal combustion engine, including determining an amount of particulates in an exhaust gas which is accumulated in a particulate filter disposed within an exhaust passage of the engine, determining whether the particulate filter is at an adequate state for regeneration, and executing regeneration of the particulate filter by controlling oxygen concentration in the exhaust gas depending on the amount of the trapped particulates when it is determined that the particulate filter is at the adequate state and the amount of the accumulated particulates exceeds a first preset value. An exhaust gas purifying apparatus corresponding to the method.

REFERENCES:
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patent: 5746989 (1998-05-01), Murachi et al.
patent: 5974791 (1999-11-01), Hirota et al.
patent: 6490857 (2002-12-01), Sasaki
patent: 6588204 (2003-07-01), Hirota et al.
patent: 6644022 (2003-11-01), Hirota et al.
patent: 2000-161044 (2000-06-01), None
patent: WO 02086301 (2002-10-01), None
Patent Abstract of Japan; vol. 006, No. 106, May 10, 1983, JP 58-028580, Feb. 19, 1983.

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