Patents by Inventor Michael Christopher Luckham
Michael Christopher Luckham has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8887495Abstract: An ash filter for a reciprocating piston internal combustion engine is disclosed. The ash filter includes a substrate, such as a honeycomb monolith substrate or a plurality of particulate substrates, and a matrix of a zeolite material disposed on the respective substrate or substrates, the matrix of the zeolite material configured to remove ash from an exhaust gas flow from a reciprocating piston internal combustion engine. An exhaust treatment system for a reciprocating piston internal combustion engine is disclosed. The exhaust treatment system includes an ash filter comprising a matrix of a first zeolite and configured to receive an exhaust gas flow from an engine; and an exhaust treatment device, the exhaust treatment device comprising a matrix of a second zeolite and configured to receive the exhaust gas flow from the ash filter.Type: GrantFiled: July 14, 2009Date of Patent: November 18, 2014Assignee: GM Global Technology Operations LLCInventors: Shouxian Ren, David B. Brown, Michael Christopher Luckham
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Patent number: 8409515Abstract: An emission treatment system for a vehicle having an internal combustion engine is described. The emission treatment system has an HC-SCR catalyst including a non-Pt group metal dispersed in a ceramic matrix configured to receive an exhaust gas flow from an engine. The system also has an oxidation catalyst comprising a Pt group metal configured to receive the exhaust gas flow from the HC-SCR catalyst. The system also has a U-SCR catalyst and a diesel particulate filter, one of the U-SCR catalyst or the DPF configured to receive the exhaust gas flow from the oxidation catalyst and the other one of the U-SCR catalyst or the diesel particulate filter configured to receive the exhaust gas flow from the respective one.Type: GrantFiled: July 14, 2009Date of Patent: April 2, 2013Assignee: GM Global Technology Operations LLCInventors: Shouxian Ren, Michael Christopher Luckham, David B. Brown
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Patent number: 8146351Abstract: An exhaust control system includes a temperature sensor, a temperature estimation module, and an exhaust condition adjustment module. The temperature sensor measures an outlet temperature of an exhaust gas downstream from an emission reduction device. The temperature estimation module estimates a highest temperature of the emission reduction device. The exhaust condition adjustment module controls operation of the exhaust control system based on the highest temperature of the emission reduction device.Type: GrantFiled: June 5, 2009Date of Patent: April 3, 2012Inventors: Jianwen Li, Michael Christopher Luckham, Paul Jasinkiewicz, Rebecca J Darr, Rahul Mital
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Patent number: 8047046Abstract: A sensor diagnostic system comprises first, second, and third dosing agent sensors and a control module. The first, second, and third dosing agent sensors indicate whether a dosing agent is present at first, second, and third volumetric levels of a dosing agent tank, respectively. The second volumetric level is greater than the first volumetric level and the third volumetric level is greater than the second volumetric level. The control module selectively diagnoses a sensor fault in at least one of the first, second, and third dosing agent sensors based on the indications of the first, second, and third dosing agent sensors.Type: GrantFiled: February 5, 2009Date of Patent: November 1, 2011Inventors: Cheryl J Stark, James M Dixon, Scott R Gordon, Michael Christopher Luckham
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Patent number: 8043394Abstract: A particulate matter (PM) filter assembly includes a PM filter that filters PM from an exhaust stream and that includes an entry face facing a first direction of flow of the exhaust stream, and a swirl element disposed in the exhaust stream and that includes a blade that directs a portion of the exhaust stream in a second direction of flow that is different than the first direction of flow. The blade directs the portion of the exhaust stream to distribute the exhaust stream over a frontal area of the entry face of the PM filter. A related method of filtering particulate matter from an exhaust stream is also provided.Type: GrantFiled: October 15, 2008Date of Patent: October 25, 2011Inventors: Rahul Mital, David B. Brown, Jianwen Li, Michael Christopher Luckham, Kevin B. Fuqua, Kasser A. Jaffri, Linda Garcia
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Publication number: 20110011067Abstract: An ash filter for a reciprocating piston internal combustion engine is disclosed. The ash filter includes a substrate, such as a honeycomb monolith substrate or a plurality of particulate substrates, and a matrix of a zeolite material disposed on the respective substrate or substrates, the matrix of the zeolite material configured to remove ash from an exhaust gas flow from a reciprocating piston internal combustion engine. An exhaust treatment system for a reciprocating piston internal combustion engine is disclosed. The exhaust treatment system includes an ash filter comprising a matrix of a first zeolite and configured to receive an exhaust gas flow from an engine; and an exhaust treatment device, the exhaust treatment device comprising a matrix of a second zeolite and configured to receive the exhaust gas flow from the ash filter.Type: ApplicationFiled: July 14, 2009Publication date: January 20, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Shouxian Ren, David B. Brown, Michael Christopher Luckham
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Publication number: 20110011068Abstract: An emission treatment system for a vehicle having an internal combustion engine is disclosed. The emission treatment system has an HC-SCR catalyst including a non-Pt group metal dispersed in a ceramic matrix configured to receive an exhaust gas flow from an engine. The system also has an oxidation catalyst comprising a Pt group metal configured to receive the exhaust gas flow from the HC-SCR catalyst. The system also has a U-SCR catalyst and a diesel particulate filter, one of the U-SCR catalyst or the DPF configured to receive the exhaust gas flow from the oxidation catalyst and the other one of the U-SCR catalyst or the diesel particulate filter configured to receive the exhaust gas flow from the respective one.Type: ApplicationFiled: July 14, 2009Publication date: January 20, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Shouxian Ren, Michael Christopher Luckham, David B. Brown
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Publication number: 20100307139Abstract: An exhaust control system includes a temperature sensor, a temperature estimation module, and an exhaust condition adjustment module. The temperature sensor measures an outlet temperature of an exhaust gas downstream from an emission reduction device. The temperature estimation module estimates a highest temperature of the emission reduction device. The exhaust condition adjustment module controls operation of the exhaust control system based on the highest temperature of the emission reduction device.Type: ApplicationFiled: June 5, 2009Publication date: December 9, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jianwen Li, Michael Christopher Luckham, Paul Jasinkiewicz, Rebecca J Darr, Rahul Mital
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Publication number: 20090282816Abstract: An engine system includes a diesel engine having an exhaust manifold connected to the diesel engine. An exhaust passage is connected to the exhaust manifold and a diesel particulate filter is disposed in the exhaust passage. An air intake passage is provided for supplying fresh air to the diesel engine. A bypass passage is connected between the air intake passage and the exhaust passage in a location downstream of the diesel particulate filter. The bypass passage includes a bypass control valve for opening and closing the bypass passage during a diesel particulate filter regeneration cycle when the vehicle is at low speed or idle.Type: ApplicationFiled: May 19, 2008Publication date: November 19, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jianwen Li, Rahul Mital, Michael Christopher Luckham, Sameer Bhargava
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Publication number: 20090235653Abstract: A particulate matter (PM) filter assembly includes a PM filter that filters PM from an exhaust stream and that includes an entry face facing a first direction of flow of the exhaust stream, and a swirl element disposed in the exhaust stream and that includes a blade that directs a portion of the exhaust stream in a second direction of flow that is different than the first direction of flow. The blade directs the portion of the exhaust stream to distribute the exhaust stream over a frontal area of the entry face of the PM filter. A related method of filtering particulate matter from an exhaust stream is also provided.Type: ApplicationFiled: October 15, 2008Publication date: September 24, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INCInventors: Rahul Mital, David B. Brown, Jianwen Li, Michael Christopher Luckham, Kevin B. Fuqua, Kasser A. Jaffri, Linda Garcia
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Publication number: 20090199616Abstract: A sensor diagnostic system comprises first, second, and third dosing agent sensors and a control module. The first, second, and third dosing agent sensors indicate whether a dosing agent is present at first, second, and third volumetric levels of a dosing agent tank, respectively. The second volumetric level is greater than the first volumetric level and the third volumetric level is greater than the second volumetric level. The control module selectively diagnoses a sensor fault in at least one of the first, second, and third dosing agent sensors based on the indications of the first, second, and third dosing agent sensors.Type: ApplicationFiled: February 5, 2009Publication date: August 13, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Cheryl J. Stark, James M. Dixon, Scott R. Gordon, Michael Christopher Luckham