System for assisting regeneration of pollution management...

Details System for assisting regeneration of pollution management... System for assisting regeneration of pollution management...

2005-06-21

2010-06-29

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...

C060S284000, C060S285000, C060S286000

Reexamination Certificate

active

07743607

ABSTRACT:
The invention concerns a system for assisting regeneration of pollution management means (1) associated with oxidation catalyst forming means (2) implementing an oxygen storage capacity (OSC) function, and integrated in an exhaust line of a motor vehicle diesel engine (4), wherein the engine is associated with common ramp means (7) supplying fuel to the cylinders thereof. The invention is characterized in that it comprises means (8) for determining the frequency of the pollution management means regeneration and for comparing same to predetermined threshold values (10), to control the engine (4) in a first lean mixture regeneration operating mode (11) for frequencies less than the threshold values or in a second regeneration operating mode implementing engine operating sequences alternating rich mixture and lean mixture operating phases (12) for frequencies more than the threshold values.

REFERENCES:
patent: 2003/0230079 (2003-12-01), Kuboshima et al.
patent: 2004/0083715 (2004-05-01), Le Leux et al.
patent: 2004/0118110 (2004-06-01), Kondo et al.
patent: 1072763 (2001-01-01), None
patent: 2771449 (1999-05-01), None

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