Filter regeneration control

Details Filter regeneration control Filter regeneration control

2006-06-27

2006-06-27

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S278000, C060S297000, C060S311000

Reexamination Certificate

active

07065959

ABSTRACT:
A regeneration control device, which regenerates a filter (13) for trapping particulate matter in exhaust gas from an engine (1), is disclosed. The filter (13) supports a catalyst which oxidizes unburnt components in the exhaust gas. The regeneration control device has a temperature sensor (14) which detects a filter inlet exhaust gas temperature (Tdpf_in_mea); and a microcomputer (22). The microcomputer (22) is programmed to compute a filter outlet exhaust gas temperature (Tdpf_out_cal), not including temperature rise due to oxidation reaction of unburnt components based on the detected inlet exhaust gas temperature; compute the filter bed temperature (Tbed_cal) based on the detected inlet exhaust gas temperature and computed outlet exhaust gas temperature; compute a temperature rise (ΔThc1) due to oxidation reaction of unburnt components; correct the bed temperature based on the computed temperature rise (ΔThc1).

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U.S. Appl. No. 10/942,010, filed Sep. 16, 2004, Otake et al.

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