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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DONALDSON COMPANY, INC.MINNEAPOLIS, MN621

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Angelo, Theodore G St. Paul, MN 8 104
Zhang, Wenzhong Savage, MN 80 2118

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
 
Institut Francais du Petrole (1)
* 6,582,495 Process for preparing supported zeolitic membranes by temperature-controlled crystallisation 12 2002
 
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)
* 5,741,989 Lower leg for crash test dummy 11 1996
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (2)
* 7,021,047 Diesel exhaust aftertreatment device regeneration system 14 2004
* 2006/0272,317 Exhaust treatment diagnostic using a temperature sensor 3 2005
 
EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH (4)
* 6,534,021 Heat-resistant and regeneratable filter body with flow paths and process for producing the filter body 36 1998
* 7,128,772 Filter assembly, process for producing the filter assembly and filter body having the filter assembly 10 2004
* 7,055,314 System having open particulate filter and heating element, for cleaning exhaust gases from mobile internal combustion engines 18 2004
* 2005/0232,830 High-temperature-resistant coated fiber layer and particulate trap with the coated fiber layer 20 2005
 
CLEAN DIESEL TECHNOLOGY INC (CDTI) (1)
* 2005/0132,674 Particulate matter reducing apparatus 6 2004
 
MAZDA MOTOR CORPORATION (1)
* 2007/0012,031 FUEL CONTROL FOR DIESEL ENGINE HAVING PARTICULATE FILTER 5 2006
 
Donaldson Company, Inc. (1)
* 6,673,136 Air filtration arrangements having fluted media constructions and methods 175 2001
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (2)
* 5,746,989 Method for purifying exhaust gas of a diesel engine 138 1996
* 6,546,721 Exhaust gas purification device 26 2001
 
MITSUBISHI HEAVY INDUSTRIES, LTD. (1)
* 6,023,930 Black smoke eliminating device for internal combustion engine and exhaust gas cleaning system including the device 19 1999
 
Texaco Inc. (2)
* 4,372,111 Method for cyclic rejuvenation of an exhaust gas filter and apparatus 29 1980
* 4,416,674 Filter for treating a particle-carrying gaseous stream 21 1982
 
ISUZU MOTORS LIMITED (2)
* 6,484,495 Device for purifying exhaust gas of diesel engines 16 2001
* 6,742,331 Device for purifying exhaust gas of diesel engines 25 2002
 
JOHNSON MATTHEY, INC. (1)
* 4,902,487 Treatment of diesel exhaust gases 176 1988
 
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (4)
* 6,294,141 Emission control 61 1997
* 6,863,874 Process and apparatus for treating combustion exhaust gas 37 2001
* 2006/0185,352 Exhaust system for a lean-burn ic engine 5 2003
* 7,111,453 Emissions control 9 2005
 
THE REGENTS OF THE UNIVERSITY OF MICHIGAN (1)
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SOUTHWEST RESEARCH INSTITUTE (1)
* 6,293,096 Multiple stage aftertreatment system 60 1999
 
FLEETGUARD, INC. (2)
* 6,669,913 Combination catalytic converter and filter 27 2000
* 6,582,490 Pre-form for exhaust aftertreatment control filter 39 2001
 
DAIMLERCHRYSLER AG (1)
* 6,805,849 System for NOx reduction in exhaust gases 51 2001
 
NISSAN MOTOR CO., LTD. (3)
* 5,207,990 Exhaust gas purifying device for internal combustion engine 39 1991
* 6,916,450 Exhaust gas purifying system and method 28 2001
* 7,007,462 Combustion control apparatus for internal combustion engine 10 2004
 
ROBERTSHAW CONTROLS COMPANY (1)
* 4,449,362 Exhaust system for an internal combustion engine, burn-off unit and methods therefor 29 1981
 
MITSUBISHI FUSO TRUCK AND BUS CORPORATION (1)
* 7,000,384 Exhaust emission control device of engine 9 2003
 
ENGELHARD CORPORATION (2)
* 5,996,337 Dynamic calorimetric sensor system 36 1998
* 7,078,004 Diesel oxidation catalyst 33 2003
 
ROBERT BOSCH GMBH (2)
* 5,372,111 Fuel injection pump with speed governor 0 1992
* 2004/0013,579 Device for treating exhaust gases 9 2003
 
UMICORE AG & CO. KG (2)
* 5,157,007 Catalyst for purification of exhaust gases of diesel engines and method of use 87 1991
* 2002/0170,433 Process and device for removing soot particles from diesel engine exhaust gas 5 2002
 
FORD GLOBAL TECHNOLOGIES, LLC (5)
* 6,813,882 System and method for removing NOx from an emission control device 48 2002
* 6,766,641 Temperature control via computing device 39 2003
* 6,983,589 Diesel aftertreatment systems 37 2003
* 6,973,776 Exhaust gas aftertreatment systems 20 2003
* 6,990,800 Diesel aftertreatment systems 9 2003
 
CATERPILLAR INC. (2)
* 5,522,218 Combustion exhaust purification system and method 117 1994
* 6,862,881 Method and apparatus for controlling regeneration of a particulate filter 15 2003
 
FORD GLOBAL TECHNOLOGIES, INC. (1)
* 6,199,375 Lean catalyst and particulate filter control system and method 29 1999
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 4,652,286 Exhaust gas filter 118 1985
 
MAN TRUCK & BUS AG (1)
* 6,119,448 Method for metering a reducing agent into NO.sub.x -containing exhaust gas of an internal combustion engine 83 1998
 
INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, LLC (1)
* 7,082,753 System and methods for improved emission control of internal combustion engines using pulsed fuel flow 66 2003
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
HALDOR TOPSOE A/S (1)
* 8,127,535 Method and system for purification of exhaust gas from diesel engines 0 2008
 
Donaldson Company, Inc. (2)
7,862,640 Low temperature diesel particulate matter reduction system 5 2007
8,808,418 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)
* 8,069,656 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)
8,161,731 Selective catalytic reduction using controlled catalytic deactivation 0 2008
* 2009/0277,159 Selective Catalytic Reduction Using Controlled Catalytic Deactivation 4 2008
8,196,392 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)
* 8,931,256 Engine system with passive regeneration of a filter in EGR loop 1 2013
9,021,785 Engine system for increasing available turbocharger energy 0 2013
 
MAN NUTZFAHRZEUGE AG (2)
* 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
* 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