US Patent Application No: 2006/0236,680

Number of patents in Portfolio can not be more than 2000

Method for regenerating a diesel particulate filter

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Abstract

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A method is disclosed for regenerating a diesel particulate filter without excessively increasing NO.sub.2 emissions. The system includes a fuel delivery device, an oxidation catalyst, and a diesel particulate filter. During a first operational mode, the fuel injection device injects a relatively smaller amount of fuel into the exhaust stream to reduce the capacity of the oxidation catalyst to oxidize NO in the exhaust stream to NO.sub.2. At a determined time, a second operational mode is initiated where a relatively larger amount of fuel is injected into the exhaust stream and is oxidized within the oxidation catalyst, thereby raising the exhaust temperature sufficiently to combust substantially all of the soot trapped on the diesel particulate filter.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DONALDSON COMPANY, INC.MINNEAPOLIS, MN783

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Angelo, Theodore G West St. Paul, MN 11 77
Zhang, Wenzhong Savage, MN 108 1223

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
CATERPILLAR INC. (2)
8,161,731 Selective catalytic reduction using controlled catalytic deactivation 0 2008
8,196,392 Exhaust system having regeneration temperature control strategy 0 2008
 
DETROIT DIESEL CORPORATION (1)
8,069,656 Method of controlling hydrocarbon accumulation in a particulate filter under certain operating conditions 1 2008
 
Donaldson Company, Inc. (1)
7,862,640 Low temperature diesel particulate matter reduction system 4 2007
 
HALDOR TOPSOE A/S (1)
8,127,535 Method and system for purification of exhaust gas from diesel engines 0 2008
 
MAN NUTZFAHRZEUGE AG (1)
8,404,011 Method and device for the regeneration of a particle filter arranged in the exhaust gas tract of an internal combustion engine 0 2009

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