Exhaust gas after-treatment apparatus

Details Exhaust gas after-treatment apparatus Exhaust gas after-treatment apparatus

2005-06-06

2009-12-22

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S286000, C060S297000

Reexamination Certificate

active

07634906

ABSTRACT:
In an exhaust gas after-treatment apparatus (30) including a particulate filter (32) that receives an exhaust gas having passes through a catalyst converter (31) and traps particulates in an exhaust, injectors (6through9) used for a post fuel injection to activate the catalyst converter (31), and a filter control unit (36) that performs post fuel injection control, the filter control unit (36) includes a determination portion that determines whether a post fuel injection operation should be started, and a calculation portion that calculates an integration value of a fuel injection amount after the post fuel injection operation is started in a case where the post fuel injection operation is started in responding to the determination portion. The post fuel injection operation is stopped when the integration value has reached a specified value. It is thus possible to appropriately perform the post fuel injection control to activate the catalyst converter.

REFERENCES:
patent: 6253545 (2001-07-01), Suzuki
patent: 2005/0086933 (2005-04-01), Nieuwstadt et al.
patent: 04-047115 (1992-02-01), None
patent: 2000-345883 (2000-12-01), None
patent: 2002-227672 (2002-08-01), None
patent: 2002-303190 (2002-10-01), None
patent: 2003-027996 (2003-01-01), None
International Search Report No. PCT/JP2005/010727, dated Sep. 22, 2005, 4 pgs.

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