US Patent No: 6,615,577

Number of patents in Portfolio can not be more than 2000

Method and system for controlling a regeneration cycle of an emission control device

ALSO PUBLISHED AS: 20020189235

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Abstract

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A system and method for optimizing the regeneration cycle of an emission control device, such as a lean NO.sub.x trap, is disclosed wherein the device is filled to a predetermined fraction of its existing capacity and is then completely emptied during a device purge. As device capacity is substantially reduced, as indicated by the actual fill time becoming equal to or less than a predetermined minimum fill time, a device desulfation event is performed to attempt to restore device capacity. A programmed computer controls the fill and purge times based on the amplitude of the voltage of a switching-type oxygen sensor and the time response of the sensor. The frequency of the purge, which ideally is directly related to the device capacity depletion rate, is controlled so that the device is not filled beyond the storage capacity limit.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FORD GLOBAL TECHNOLOGIES, LLCDEARBORN, MI5590

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asik, Joseph Richard Bloomfield Hills, MI 14 208
Meyer, Garth Michael Dearborn, MI 22 146

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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5,209,061 Exhaust gas purification system for an internal combustion engine 81 1992
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5,402,641 Exhaust gas purification apparatus for an internal combustion engine 127 1993
5,433,074 Exhaust gas purification device for an engine 82 1993
5,412,945 Exhaust purification device of an internal combustion engine 87 1993
5,423,181 Exhaust gas purification device of an engine 69 1993
5,377,484 Device for detecting deterioration of a catalytic converter for an engine 85 1993
5,437,153 Exhaust purification device of internal combustion engine 129 1994
5,450,722 Exhaust purification device of internal combustion engine 68 1994
5,448,887 Exhaust gas purification device for an engine 80 1994
5,473,890 Exhaust purification device of internal combustion engine 108 1994
5,483,795 Exhaust purification device of internal combustion engine 100 1994
5,472,673 Exhaust gas purification device for an engine 103 1994
5,551,231 Engine exhaust gas purification device 97 1994
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5,746,052 Exhaust gas purification device for an engine 86 1995
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5,713,199 Device for detecting deterioration of NO.sub.x absorbent 97 1996
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6,233,925 Exhaust discharge control device for internal combustion engine 37 1999
 
FORD GLOBAL TECHNOLOGIES, INC. (20)
5,359,852 Air fuel ratio feedback control 41 1993
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5,722,236 Adaptive exhaust temperature estimation and control 100 1996
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HONDA GIKEN KOGYO KABUSHIKI KAISHA (10)
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5,803,048 System and method for controlling air-fuel ratio in internal combustion engine 64 1995
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6,012,428 Method for controlling air-fuel ratio in internal combustion engine 67 1997
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NISSAN MOTOR CO., LTD. (8)
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HITACHI, LTD. (6)
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5,802,843 Method and apparatus for diagnosing engine exhaust gas purification system 72 1995
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5,867,983 Control system for internal combustion engine with enhancement of purification performance of catalytic converter 32 1996
5,813,387 Change gear control device using acceleration and gear ratio as parameters for automatic transmission in a motor vehicle and the method therefor 21 1996
5,979,404 Output torque control apparatus and method for an internal combustion engine 26 1997
 
ROBERT BOSCH GMBH (6)
5,267,439 Method and arrangement for checking the aging condition of a catalyzer 64 1991
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6,216,451 Method of diagnosing an NOx storage catalytic converter during operation of an internal combustion engine 32 1999
6,161,428 Method and apparatus for evaluating the conversion capability of a catalytic converter 27 1999
 
Nippondenso Co., Ltd. (5)
4,251,989 Air-fuel ratio control system 95 1979
4,677,955 Method and apparatus for discriminating operativeness/inoperativeness of an air-fuel ratio sensor 26 1985
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NGK INSULATORS, LTD. (4)
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CONTINENTAL AUTOMOTIVE GMBH (3)
5,862,661 Method for monitoring catalytic converter efficiency 27 1997
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6,145,302 Method for monitoring a catalytic converter 47 1998
 
DENSO CORPORATION (3)
6,073,440 System for detecting deterioration of catalyst for purifying exhaust gas 41 1997
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6,244,046 Engine exhaust purification system and method having NOx occluding and reducing catalyst 48 1999
 
ENGELHARD CORPORATION (3)
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6,105,365 Apparatus, method, and system for concentrating adsorbable pollutants and abatement thereof 96 1997
 
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CONTINENTAL AUTOMOTIVE SYSTEMS, INC. (2)
5,842,339 Method for monitoring the performance of a catalytic converter 47 1997
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5,595,060 Apparatus and method for internal-combustion engine control 118 1995
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VOLKSWAGEN AG (2)
6,164,064 Method and arrangement for desulfurization of NOx reservoir catalysts 30 1998
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ANR PIPELINE COMPANY (1)
6,189,523 Method and system for controlling an air-to-fuel ratio in a non-stoichiometric power governed gaseous-fueled stationary internal combustion engine 37 1999
 
BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT (1)
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5,771,686 Method and apparatus for operating a diesel engine 106 1996
 
DAIMLER-BENZ AKTIENGESELLSCHAFT (1)
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ENVIRONTEST SYSTEMS CORP. (1)
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EPIQ SENSOR-NITE N.V. (1)
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FREIGHTLINER LLC (1)
6,092,021 Fuel use efficiency system for a vehicle for assisting the driver to improve fuel economy 106 1997
 
GAS TECHNOLOGY INSTITUTE (1)
5,554,269 No.sub.x sensor using electrochemical reactions and differential pulse voltammetry (DPV) 32 1995
 
HITACHI AMERICA, LTD. (1)
5,426,934 Engine and emission monitoring and control system utilizing gas sensors 90 1993
 
HONDA MOTOR CO., LTD. (1)
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HYUNDAI MOTOR COMPANY (1)
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ISUZU MOTORS LIMITED (1)
5,410,873 Apparatus for diminishing nitrogen oxides 94 1993
 
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO (1)
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Kohler Co. (1)
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Nippon Shokubai Kagaku Kogyo Co., Ltd. (1)
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TJB Engineering, Inc. (1)
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Other [Check patent profile for assignment information] (2)
4,186,296 Vehicle energy conservation indicating device and process for use 19 1977
5,569,848 System, method and apparatus for monitoring tire inflation pressure in a vehicle tire and wheel assembly 80 1995

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
DETROIT DIESEL CORPORATION (6)
7,441,403 Method and system for determining temperature set points in systems having particulate filters with regeneration capabilities 3 2004
7,210,286 Method and system for controlling fuel included within exhaust gases to facilitate regeneration of a particulate filter 8 2004
7,461,504 Method and system for controlling temperatures of exhaust gases emitted from internal combustion engine to facilitate regeneration of a particulate filter 2 2004
7,434,388 Method and system for regeneration of a particulate filter 0 2004
7,076,945 Method and system for controlling temperatures of exhaust gases emitted from an internal combustion engine to facilitate regeneration of a particulate filter 7 2004
7,322,183 Method and system for controlling temperatures of exhaust gases emitted from an internal combustion engine to facilitate regeneration of a particulate filter 1 2006
 
CUMMINS, INC. (4)
7,707,826 System for controlling triggering of adsorber regeneration 7 2006
7,654,076 System for controlling absorber regeneration 2 2006
7,654,079 Diesel oxidation catalyst filter heating system 3 2006
7,594,392 System for controlling adsorber regeneration 4 2006
 
FORD GLOBAL TECHNOLOGIES, LLC (3)
6,666,201 System and method for diagnosing EGR performance using NOx sensor 5 2002
7,263,433 Computer device to calculate emission control device functionality 5 2003
7,181,905 Lean-burn engine exhaust air-fuel and temperature management strategy for improved catalyst durability 4 2003
 
PEUGEOT CITROEN AUTOMOBILES SA (3)
7,343,737 System for purging sulfate from a NOx trap 0 2004
7,581,388 System for purging sulfate from a NOx trap for a motor vehicle engine 0 2004
7,716,923 System for assisting regeneration of pollution management means in an exhaust line 0 2005
 
EISAI R&D MANAGEMENT CO., LTD. (1)
7,533,523 Optimized desulfation trigger control for an adsorber 4 2006
 
HYUNDAI MOTOR COMPANY (1)
7,587,891 Method for regenerating NOx absorbing catalyst 0 2006
 
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI (1)
7,430,856 Pressure detection mechanism for exhaust emission control device of internal combustion engine 3 2004
 
PH2 Solutions, Inc. (1)
7,010,416 Systems and methods for resetting vehicle emission system error indicators 3 2004

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