Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2011-04-26
2011-04-26
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...
C060S274000, C060S276000, C060S286000, C060S290000, C060S297000
Reexamination Certificate
active
07930880
ABSTRACT:
A method for triggering a new regeneration event in a soot-trapping particulates filter disposed in an exhaust gas stream of an internal combustion engine, comprising the steps of determining instantaneous engine speed and engine load; determining instantaneous mass fractions for wet soot and for dry soot in the exhaust gas stream for the instantaneous engine speed and load; determining instantaneous concentrations of wet and dry soot particles in the exhaust gas; determining the rates of accumulation of wet soot and dry soot in the particulates filter; determining the total amounts of wet soot and dry soot accumulated in said soot-trapping device during all engine operation conditions since the latest previous regeneration event; and triggering the new regeneration event when the total amount of wet soot and dry soot exceeds a permissible value.
REFERENCES:
patent: 6735941 (2004-05-01), Saito et al.
patent: 7231761 (2007-06-01), Okugawa
patent: 2006/0042237 (2006-03-01), Nonoyama et al.
patent: 2006/0059901 (2006-03-01), Saito et al.
patent: 2006/0225409 (2006-10-01), Kuboshima et al.
patent: 2003254042 (2003-09-01), None
Harris Thomas M.
Simopoulos George N.
Sugiarto Tanto
Williams John D.
Delphi Technologies Inc.
Denion Thomas E
Shanske Jason
Twomey Thomas N.
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