Methods for estimating particulate load in a particulate...

Details Methods for estimating particulate load in a particulate... Methods for estimating particulate load in a particulate...

2008-11-26

2011-12-06

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...

C060S286000

Reexamination Certificate

active

08069658

ABSTRACT:
A method for regenerating a particulate filter may comprise calculating a first estimated soot load of a particulate filter based on a pressure drop of an exhaust gas flowing through the particulate filter, and calculating a second estimated soot load of the particulate filter based on a mass balance of soot in the particulate filter. The method may further comprise calculating a hybrid estimated soot load based on the first estimated soot load and the second estimated soot load, wherein calculating the hybrid estimated soot load comprises applying at least one gate so as to weight a relative contribution of each of the first estimated soot load and the second estimated soot load to the hybrid estimated soot load, and causing regeneration of the particulate filter when the hybrid estimated soot load is greater than or equal to a threshold value.

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