Method for regenerating a diesel particulate filter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20060236680A1
SERIAL NO

11284143

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ATTORNEY / AGENT: (SPONSORED)

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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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DONALDSON COMPANY, INC.MINNEAPOLIS, MN661

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Angelo, Theodore G St. Paul, MN 8 110
Zhang, Wenzhong Savage, MN 81 2327

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2005/0198,942 Exhaust gas aftertreatment systems 6 2005
 
Emitech Gesellschaft Fur (1)
* 2006/0080,953 Method for regenerating a particle trap and exhaust system 19 2005
 
DETROIT DIESEL CORPORATION (1)
* 2006/0130,464 Method and system for controlling fuel included within exhaust gases to facilitate regeneration of a particulate filter 1 2004
 
SAFETY TECHNOLOGY SYSTEMS, INC. (1)
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INSTITUT FRANCAIS DU PETROLE (1)
* 6582495 Process for preparing supported zeolitic membranes by temperature-controlled crystallisation 13 2002
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (2)
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EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH (4)
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CLEAN DIESEL TECHNOLOGIES, INC. (1)
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MAZDA MOTOR CORPORATION (1)
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DONALDSON COMPANY, INC. (1)
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TOYOTA JIDOSHA KABUSHIKI KAISHA (2)
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MITSUBISHI HEAVY INDUSTRIES, LTD. (1)
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ISUZU MOTORS LIMITED (2)
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JOHNSON MATTHEY, INC. (1)
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JOHNSON MATTHEY PUBLIC LIMITED COMPANY (5)
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THE REGENTS OF THE UNIVERSITY OF MICHIGAN (1)
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SOUTHWEST RESEARCH INSTITUTE (1)
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FLEETGUARD, INC. (2)
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NISSAN MOTOR CO., LTD. (3)
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ROBERTSHAW CONTROLS COMPANY (1)
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MITSUBISHI FUSO TRUCK AND BUS CORPORATION (1)
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ENGELHARD CORPORATION (2)
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ROBERT BOSCH GMBH (2)
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UMICORE AG & CO. KG (2)
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FORD GLOBAL TECHNOLOGIES, LLC (5)
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CATERPILLAR INC. (2)
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FORD GLOBAL TECHNOLOGIES, INC. (1)
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MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
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MAN TRUCK & BUS AG (1)
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INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, LLC (1)
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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
HALDOR TOPSOE A/S (1)
* 8127535 Method and system for purification of exhaust gas from diesel engines 0 2008
 
DONALDSON COMPANY, INC. (2)
7862640 Low temperature diesel particulate matter reduction system 5 2007
8808418 Low temperature diesel particulate matter reduction system 0 2012
 
TAS DISTRIBUTING CO., INC. (1)
* 2012/0137,658 Temp-A-Start Regeneration System 0 2011
 
DETROIT DIESEL CORPORATION (2)
* 8069656 Method of controlling hydrocarbon accumulation in a particulate filter under certain operating conditions 1 2008
* 2009/0277,158 METHOD OF CONTROLLING HYDROCARBON ACCUMULATION IN A PARTICULATE FILTER UNDER CERTAIN OPERATING CONDITIONS 3 2008
 
CATERPILLAR INC. (4)
8161731 Selective catalytic reduction using controlled catalytic deactivation 0 2008
* 2009/0277,159 Selective Catalytic Reduction Using Controlled Catalytic Deactivation 4 2008
8196392 Exhaust system having regeneration temperature control strategy 1 2008
* 2009/0293,456 Exhaust system having regeneration temperature control strategy 1 2008
 
ELECTRO-MOTIVE DIESEL, INC. (2)
* 8931256 Engine system with passive regeneration of a filter in EGR loop 2 2013
9021785 Engine system for increasing available turbocharger energy 0 2013
 
MAN NUTZFAHRZEUGE AG (2)
* 8404011 Method and device for the regeneration of a particle filter arranged in the exhaust gas tract of an internal combustion engine 1 2009
* 2010/0037,768 METHOD AND DEVICE FOR THE REGENERATION OF A PARTICLE FILTER ARRANGED IN THE EXHAUST GAS TRACT OF AN INTERNAL COMBUSTION ENGINE 0 2009
* Cited By Examiner