Method and device for operating an internal combustion engine with low nitrogen oxide emissions

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO

5845487

SERIAL NO

08897769

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and an apparatus for operating an internal combustion engine, in particular a motor-vehicle diesel engine, with low nitrogen-oxide emissions, has a first mode of operation which sets an early start of fuel injection and a nitrogen-oxide reducing agent is added to the stream of exhaust gases upstream of a nitrogen-oxide-reducing exhaust-gas catalytic converter, and a second mode of operation which sets a late start of fuel injection. A temperature sensor measures the temperature of the exhaust-gas catalytic converter. The engine is operated in the second mode of operation when the measured temperature of the exhaust-gas catalytic converter lies outside a prescribable temperature range for an effective catalytic nitrogen-oxide reduction to ensure low nitrogen-oxide emissions.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DAIMLERCHRYSLER AGSTUTTGART158

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fraenkle, Gerhard Remshalden, DE 5 100
Marquartdt, Klaus-Juergen Remshalden, DE 1 65

Cited Art Landscape

Patent Info (Count) # Cites Year
 
FUJI JUKOGYO KABUSHIKI KAISHA (1)
* 5050551 System for controlling ignition timing and fuel injection timing of a two-cycle engine 38 1990
 
MAZDA MOTOR CORPORATION (1)
* 5501074 Exhaust gas purifying system 12 1994
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (3)
* 5211010 Exhaust gas purification system for a diesel engine 24 1991
* 5201802 Exhaust gas purification system for an internal combustion engine 127 1992
* 5713199 Device for detecting deterioration of NO.sub.x absorbent 97 1996
 
CATERPILLAR INC. (1)
* 5709080 Leak detection method and apparatus for an exhaust purification system 21 1996
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 2005/0034,450 Exhaust gas purification device of internal combustion engine 1 2004
* 2005/0217,249 Exhaust gas purification device of internal combustion engine 0 2005
* 2005/0204,729 Exhaust gas purification device of internal combustion engine 2 2005
 
PERKINS ENGINES COMPANY LIMITED (1)
7886528 System for controlling exhaust aftertreatment 2 2008
 
Institut Francais du Petrole (1)
* 6508057 Process and device intended for nitrogen oxides elimination in an exhaust line of an internal-combustion engine 27 1999
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (8)
* 7178328 System for controlling the urea supply to SCR catalysts 64 2004
* 2006/0130,458 System for controlling the urea supply to SCR catalysts 14 2004
* 7426825 Method and apparatus for urea injection in an exhaust aftertreatment system 20 2006
* 2008/0022,659 Method and Apparatus for Urea Injection in an Exhaust Aftertreatment System 12 2006
8713917 Method for reducing NH3 release from SCR catalysts during thermal transients 0 2008
* 2009/0056,315 METHOD FOR REDUCING NH3 RELEASE FROM SCR CATALYSTS DURING THERMAL TRANSIENTS 15 2008
* 2011/0005,202 IDENTIFYING AMMONIA SLIP CONDITIONS IN A SELECTIVE CATALYTIC REDUCTION APPLICATION 4 2009
8984867 Nitrogen dioxide generation diagnostic for a diesel after-treatment system 0 2012
 
MACK TRUCKS, INC. (3)
8511065 Engine with emissions control arrangement and method of controlling engine emissions 0 2006
* 2009/0126,345 ENGINE WITH EMISSIONS CONTROL ARRANGEMENT AND METHOD OF CONTROLLING ENGINE EMISSIONS 0 2006
8240134 Engine with exhaust cooling and method 0 2006
 
JOHNSON MATTHEY CATALYSTS (GERMANY) GMBH (1)
* 6209315 Method and device for exhaust gas after-treatment in an internal combustion engine equipped with an SCR catalyst 63 1999
 
EXTENGINE SYSTEMS, INC. (4)
7065958 Emission control system 47 2003
* 2003/0213,234 Emission control system 6 2003
7497076 Emission control system 11 2005
* 2006/0037,309 Emission control system 2 2005
 
Extengine Transport Systems, Inc. (2)
7644579 Emission control system 7 2006
* 2006/0207,243 Emission control system 6 2006
 
NISSAN DIESEL MOTOR CO., LTD. (2)
* 7685810 Engine control apparatus and engine operating method 19 2004
* 2007/0079,601 Engine control apparatus and engine operating method 10 2004
 
FCA US LLC (1)
* 6357226 Control system for lean air-fuel ratio NOx catalyst system 22 1998
 
HONDA MOTOR CO., LTD. (2)
* 7204081 Exhaust gas purifying apparatus and method for internal combustion engine, and engine control unit 23 2003
* 2004/0159,096 Exhaust gas purifying apparatus and method for internal combustion engine, and engine control unit 3 2003
 
HALDOR TOPSOE A/S (1)
* 6550250 Process for the reduction of SCR NOx emissions and apparatus therefor 14 2002
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (8)
6581373 Vehicle with reduced emission of harmful component 7 2001
* 6595307 Hybrid vehicle capable of reducing NOx emissions and method of operating same 11 2001
* 6698188 Emission control apparatus of internal combustion engine 17 2001
* 2002/0069,640 Emission control apparatus of internal combustion engine 3 2001
6959540 Exhaust gas purification device of internal combustion engine 13 2004
7272924 Exhaust gas purification device of internal combustion engine 8 2005
7086222 Exhaust gas purification device of internal combustion engine 8 2005
7086223 Exhaust gas purification device of internal combustion engine 7 2005
 
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (2)
* 7861516 Methods of controlling reductant addition 28 2004
* 2007/0214,777 Methods Of Controlling Reductant Addition 20 2004
 
GENERAL ELECTRIC COMPANY (3)
7736608 Methods and systems for reducing the emissions from combustion gases 2 2007
* 2009/0142,243 Methods and systems for reducing the emissions from combustion gases 2 2007
8728412 Apparatus for a nitrogen purge system 0 2010
 
TENNECO AUTOMOTIVE OPERATING COMPANY INC. (1)
6941746 Mobile diesel selective catalytic reduction systems and methods 35 2003
 
FLEETGUARD, INC. (1)
6922987 System and method for enhancing internal combustion engine aftertreatment applications by superheated fuel injection 12 2003
 
SIEMENS AKTIENGESELLSCHAFT (3)
* 6209313 Method of reducing the Nox content in the exhaust gas of a diesel internal combustion engine 24 1998
* 6247303 Method and device for removing oxidic noxious substances in an oxygen-containing exhaust gas and engine which is operated therewith 16 1999
* 6470676 Method for the catalytic conversion of nitrogen oxides contained in the exhaust gas of an internal combustion engine 15 2001
 
FORD MOTOR COMPANY (1)
6449945 Emission control system 14 2001
 
MITSUBISHI FUSO TRUCK AND BUS CORPORATION (2)
* 6935104 Engine control system 5 2003
* 2004/0194,451 Engine control system 2 2003
 
ENGELHARD CORPORATION (5)
6311484 System for reducing NOx transient emission 46 2000
6446430 System for reducing NOx transient emission 49 2001
6662553 Control system for mobile NOx SCR applications 60 2002
* 7150145 Control system for mobile NOx SCR applications 48 2003
* 2004/0128,982 Control system for mobile NOx SCR applications 12 2003
 
CONTINENTAL AUTOMOTIVE GMBH (2)
* 7380983 Method and device for checking temperature values of a temperature sensor of an internal combustion engine 4 2005
* 2006/0120,430 Method and device for checking temperature values of a temperature sensor of an internal combustion engine 1 2005
 
VOLKSWAGEN AG (3)
* 6408615 Method for controlling an NOx accumulating catalytic converter 9 2000
6499291 Apparatus and method for monitoring NOx storage catalytic converters 15 2001
* 2015/0315,951 METHOD FOR DIAGNOSING AN EXHAUST GAS CATALYTIC CONVERTER, DIAGNOSIS DEVICE AND MOTOR VEHICLE HAVING SUCH A DEVICE 0 2013
 
FORD GLOBAL TECHNOLOGIES, LLC (12)
6928359 High efficiency conversion of nitrogen oxides in an exhaust aftertreatment device at low temperature 13 2001
6742326 High efficiency conversion of nitrogen oxides in an exhaust aftertreatment device at low temperature 28 2001
6698191 High efficiency conversion of nitrogen oxides in an exhaust aftertreatment device at low temperature 17 2001
6421599 Control strategy for an internal combustion engine in a hybrid vehicle 53 2001
7121085 Method and apparatus for controlling hydrocarbon injection into engine exhaust to reduce NOx 10 2001
7110904 Control strategy for an internal combustion engine in a hybrid vehicle 21 2002
* 2003/0033,074 Control strategy for an internal combustion engine in a hybrid vehicle 0 2002
6895747 Diesel aftertreatment systems 14 2002
6862879 Diesel aftertreatment system 7 2002
6834498 Diesel aftertreatment systems 5 2002
7000383 Diesel aftertreatment systems 9 2004
* 2005/0091,969 Diesel aftertreatment systems 1 2004
 
CATERPILLAR INC. (2)
* 6761025 Enhanced ammonia feed control for selective catalytic reduction 25 2002
* 2004/0118,109 ENHANCED AMMONIA FEED CONTROL FOR SELECTIVE CATALYTIC REDUCTION 7 2002
 
FORD GLOBAL TECHNOLOGIES, INC. (11)
6305160 Emission control system 25 1999
6295809 Emission control system with a catalyst 30 1999
6470673 Control of a NOX reductant delivery system 40 2000
6269633 Emission control system 62 2000
6427439 Method and system for NOx reduction 56 2000
6408616 Diesel OBD-II system for detection of degradation of catalyst activity 17 2000
6363713 On-board diagnostics for detecting the operation of diesel emissions control system 6 2000
6293093 Method and system for directly monitoring the efficiency of a conditioning catalyst having negligible oxygen storage capacity 2 2000
6532736 Emission control system with a catalyst 24 2001
6546720 Method and apparatus for controlling the amount of reactant to be added to a substance using a sensor which is responsive to both the reactant and the substance 53 2001
6487852 Method and apparatus for controlling reactant injection into an active lean NOx catalyst 30 2001
 
TNO Automotive (3)
6415602 Control system for mobile NOx SCR applications 103 2000
6742330 Method for determining catalyst cool down temperature 75 2002
6581374 Control system for mobile NOx SCR applications 33 2002
* Cited By Examiner