Method of prediction of NOx mass flow in exhaust

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7155331
SERIAL NO

11012075

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Methods for estimating the mass flow rate of NOx in an exhaust stream by correlating the level of NOx to an engine parameter. The level of NOx can be estimated as a function of engine power, of intake pressure, of exhaust temperature, as a function of the percentage of O.sub.2 in the exhaust stream, or as a combination of any of these. Once the level of NOx is approximately known, the exhaust system of the engine system can be modified to improve the removal efficiency of NOx and exhaust particulate matter from the exhaust stream. These methods for estimating the NOx mass flow rate can be used for an exhaust configuration that includes a lean NOx catalyst (LNC), a selective catalytic reduction (SCR) catalyst, or a lean NOx trap (LNT). A particulate filter can be present in the exhaust configuration.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DONALDSON COMPANY, INC.MINNEAPOLIS, MN682

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Angelo, Theodore G St. Paul, MN 8 114
Zhang, Wenzhong Savage, MN 81 2384

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
6164063 Apparatus and method for emissions containment and reduction 79 1999
 
KAWASAKI JUKOGYO KABUSHIKI KAISHA (1)
6718772 Method of thermal NOx reduction in catalytic combustion systems 38 2001
 
TELEDYNE MONITOR LABS, INC. (1)
5486336 NOX sensor assembly 24 1993
 
HITACHI, LTD. (2)
2002/0050,135 Apparatus for purifying and controlling exhaust gases 4 2001
2002/0184,877 Engine exhaust purifying apparatus 8 2002
 
HONDA GIKEN KOGYO KABUSHIKI KAISHA (1)
5946906 Exhaust gas purification system of internal combustion engine 48 1997
 
ENGELHARD CORPORATION (1)
6125629 Staged reductant injection for improved NO.sub.x reduction 142 1998
 
ROBERT BOSCH GMBH (1)
* 5606856 Arrangement for an after treatment of exhaust gases from an internal combustion engine 39 1995
 
BARRACK TECHNOLOGY LIMITED (1)
5219227 Method and apparatus for determining burned gas temperature, trapped mass and NO.sub.x emissions in an internal combustion engine 10 1990
 
DONALDSON COMPANY, INC. (2)
4851015 Muffler apparatus with filter trap and method of use 88 1987
5355973 Muffler with catalytic converter arrangement; and method 45 1992
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
6345498 Exhaust gas purifier for internal combustion engine 20 1999
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (4)
5577382 Exhaust purification device of internal combustion engine 89 1995
6205773 Exhaust gas purification device for an internal combustion engine 42 1999
6634345 Internal combustion engine and method for controlling the internal combustion engine 9 2001
6619035 Exhaust emission control device of internal combustion engine 11 2002
 
FORD GLOBAL TECHNOLOGIES, LLC (1)
6679051 Diesel engine system for use with emission control device 17 2002
 
FORD GLOBAL TECHNOLOGIES, INC. (2)
6499293 Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine 10 2000
6470675 System and method controlling engine based on predicated engine operating conditions 4 2001
 
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (1)
* 6948308 Combatting air pollution 9 2003
 
TNO Automotive (1)
6415602 Control system for mobile NOx SCR applications 107 2000
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (5)
7987663 Methods for reducing emissions from diesel engines 5 2007
* 2009/0139,215 METHODS FOR REDUCING EMISSIONS FROM DIESEL ENGINES 0 2007
8056322 System and method for supplying oxygenate reductants to an emission treatment system 4 2008
* 2009/0173,061 OPTIMIZED REDUCTION OF NOx EMISSIONS FROM DIESEL ENGINES 6 2008
* 2009/0173,058 SYSTEM AND METHOD FOR THE ON-BOARD PRODUCTION OF REDUCTANTS 1 2008
 
Other [Check patent profile for assignment information] (1)
* 2015/0252,712 DIESEL EXHAUST FLUID SYSTEMS 1 2015
 
ROBERT BOSCH GMBH (1)
* 2010/0236,225 EXHAUST POSTTREATMENT ARRANGEMENT WITH REDUCING AGENT RESERVOIR, AND METHOD FOR POSTTREATMENT OF EXHAUST GASES 2 2008
 
HONDA MOTOR CO., LTD. (2)
* 8620561 Control for internal combustion engine provided with cylinder halting mechanism 0 2008
* 2009/0118,975 CONTROL FOR INTERNAL COMBUSTION ENGINE PROVIDED WITH CYLINDER HALTING MECHANISM 18 2008
 
VOLKSWAGEN AG (1)
* 2008/0041,041 Method for Exhaust-Gas Treatment for Diesel Engines or the Like, and Apparatus for Implementing This Method 1 2006
 
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
 
CUMMINS INC. (1)
9644520 Control system for determining biofuel content 0 2013
 
CATERPILLAR INC. (5)
8209956 SCR emissions control system 3 2007
* 2009/0031,710 SCR emissions control system 6 2007
8001769 Control of SCR system having a filtering device 6 2007
* 2009/0049,828 Control of SCR system having a filtering device 4 2007
7992380 Emission control system implementing reduction agent injection 1 2008
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (7)
* 7926263 Regeneration system and method for exhaust aftertreatment devices 7 2007
* 2009/0158,715 REGENERATION SYSTEM AND METHOD FOR EXHAUST AFTERTREATMENT DEVICES 15 2007
* 8108154 emission estimation systems and methods 2 2008
* 2010/0145,628 NOx EMISSION ESTIMATION SYSTEMS AND METHODS 1 2008
8984870 Low temperature NOx storage system for lean exhaust aftertreatment 0 2011
* 9551249 Aftertreatment system for internal combustion engines 0 2015
* 2015/0218,988 AFTERTREATMENT SYSTEM FOR INTERNAL COMBUSTION ENGINES 0 2015
* Cited By Examiner

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