Method for regenerating a diesel particulate filter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7861521
APP PUB NO 20090235649A1
SERIAL NO

12370411

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

. 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.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
DONALDSON COMPANY, INC.MINNEAPOLIS, MN649

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Angelo, Theodore G St. Paul, US 8 107
Zhang, Wenzhong Savage, US 81 2241

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
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (1)
7021047 Diesel exhaust aftertreatment device regeneration system 14 2004
 
EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH (4)
6534021 Heat-resistant and regeneratable filter body with flow paths and process for producing the filter body 36 1998
7128772 Filter assembly, process for producing the filter assembly and filter body having the filter assembly 10 2004
7055314 System having open particulate filter and heating element, for cleaning exhaust gases from mobile internal combustion engines 19 2004
2005/0232,830 High-temperature-resistant coated fiber layer and particulate trap with the coated fiber layer 21 2005
 
CLEAN DIESEL TECHNOLOGIES, INC. (1)
2005/0132,674 Particulate matter reducing apparatus 13 2004
 
MAZDA MOTOR CORPORATION (1)
2007/0012,031 FUEL CONTROL FOR DIESEL ENGINE HAVING PARTICULATE FILTER 5 2006
 
Donaldson Company, Inc. (1)
6673136 Air filtration arrangements having fluted media constructions and methods 181 2001
 
MITSUBISHI HEAVY INDUSTRIES, LTD. (1)
6023930 Black smoke eliminating device for internal combustion engine and exhaust gas cleaning system including the device 19 1999
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (6)
5746989 Method for purifying exhaust gas of a diesel engine 140 1996
* 6032461 Exhaust emission control apparatus for internal combustion engine 53 1998
6546721 Exhaust gas purification device 26 2001
* 7159391 Method for restricting excessive temperature rise of filter in internal combustion engine 15 2004
* 7484359 Exhaust purifying apparatus for internal combustion engine 1 2005
* 7347043 Exhaust gas purifier for internal combustion engine 7 2006
 
Texaco Inc. (2)
4372111 Method for cyclic rejuvenation of an exhaust gas filter and apparatus 29 1980
4416674 Filter for treating a particle-carrying gaseous stream 21 1982
 
JOHNSON MATTHEY, INC. (1)
4902487 Treatment of diesel exhaust gases 183 1988
 
ISUZU MOTORS LIMITED (2)
6484495 Device for purifying exhaust gas of diesel engines 16 2001
6742331 Device for purifying exhaust gas of diesel engines 25 2002
 
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (4)
6294141 Emission control 64 1997
6863874 Process and apparatus for treating combustion exhaust gas 38 2001
2006/0185,352 Exhaust system for a lean-burn ic engine 5 2003
7111453 Emissions control 10 2005
 
THE REGENTS OF THE UNIVERSITY OF MICHIGAN (1)
4686827 Filtration system for diesel engine exhaust-II 44 1986
 
SOUTHWEST RESEARCH INSTITUTE (1)
6293096 Multiple stage aftertreatment system 67 1999
 
FLEETGUARD, INC. (2)
6669913 Combination catalytic converter and filter 27 2000
6582490 Pre-form for exhaust aftertreatment control filter 40 2001
 
DAIMLERCHRYSLER AG (1)
6805849 System for NOx reduction in exhaust gases 54 2001
 
NISSAN MOTOR CO., LTD. (3)
5207990 Exhaust gas purifying device for internal combustion engine 39 1991
6916450 Exhaust gas purifying system and method 28 2001
7007462 Combustion control apparatus for internal combustion engine 10 2004
 
Robertshaw Controls Company (1)
4449362 Exhaust system for an internal combustion engine, burn-off unit and methods therefor 29 1981
 
MITSUBISHI FUSO TRUCK AND BUS CORPORATION (1)
7000384 Exhaust emission control device of engine 10 2003
 
ENGELHARD CORPORATION (2)
5996337 Dynamic calorimetric sensor system 37 1998
7078004 Diesel oxidation catalyst 35 2003
 
ROBERT BOSCH GMBH (1)
2004/0013,579 Device for treating exhaust gases 9 2003
 
UMICORE AG & CO. KG (2)
5157007 Catalyst for purification of exhaust gases of diesel engines and method of use 101 1991
2002/0170,433 Process and device for removing soot particles from diesel engine exhaust gas 5 2002
 
FORD GLOBAL TECHNOLOGIES, LLC (5)
6813882 System and method for removing NOx from an emission control device 49 2002
6766641 Temperature control via computing device 39 2003
6983589 Diesel aftertreatment systems 38 2003
6973776 Exhaust gas aftertreatment systems 20 2003
6990800 Diesel aftertreatment systems 9 2003
 
CATERPILLAR INC. (2)
5522218 Combustion exhaust purification system and method 120 1994
6862881 Method and apparatus for controlling regeneration of a particulate filter 15 2003
 
FORD GLOBAL TECHNOLOGIES, INC. (1)
6199375 Lean catalyst and particulate filter control system and method 30 1999
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
4652286 Exhaust gas filter 120 1985
 
MAN TRUCK & BUS AG (1)
6119448 Method for metering a reducing agent into NO.sub.x -containing exhaust gas of an internal combustion engine 84 1998
 
INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, LLC (1)
7082753 System and methods for improved emission control of internal combustion engines using pulsed fuel flow 67 2003
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Donaldson Company, Inc. (2)
8783022 Retrofit aftertreatment system for treating diesel exhaust 0 2010
* 2011/0047,986 Retrofit Aftertreatment System for Treating Diesel Exhaust 4 2010
 
WESTPORT POWER INC. (2)
* 8631647 System and method for regenerating an engine exhaust after-treatment device 0 2011
* 2011/0173,953 System And Method For Regenerating An Engine Exhaust After-Treatment Device 3 2011
* Cited By Examiner

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Jul 4, 2018
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 4, 2022
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00