Patents by Inventor Christopher Alan Sharp

Christopher Alan Sharp 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).

  • Patent number: 8001769
    Abstract: An emissions control system is disclosed. The emissions control system may have a power source that creates a flow of exhaust and a filtering device that receives the flow of exhaust. A first sensor may be located at or upstream of the filtering device, the first sensor being configured to measure a first temperature, and an SCR catalyst may be located downstream of the filtering device. The emissions control system may also have an injector configured to inject a reduction agent into the flow of exhaust in the presence of the SCR catalyst. The emissions control system may further have a controller in communication with the first sensor. The controller may be configured to predict a change in an ability of the SCR catalyst to store reduction agent using a measured change in the first temperature and adjust the injector according to the predicted change in the storage ability of the SCR catalyst.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: August 23, 2011
    Assignee: Caterpillar Inc.
    Inventors: Zhiyong Wei, Theodore M. Kostek, Christopher Alan Sharp
  • Patent number: 7992380
    Abstract: An emissions control system is disclosed. The emissions control system may have a power source that creates a flow of exhaust, an SCR catalyst situated to receive the flow of exhaust, and an injector configured to inject a reduction agent into the flow of exhaust in the presence of the SCR catalyst. The emissions control system may further have a controller configured to calculate a spatially dependent surface coverage of the reduction agent on the SCR catalyst and substantially stop injection of the reduction agent when the spatially dependent surface coverage of the reduction agent exceeds a maximum surface coverage of the reduction agent at one or more spatial locations.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: August 9, 2011
    Assignee: Caterpillar Inc.
    Inventors: Zhiyong Wei, Christopher Alan Sharp
  • Publication number: 20090049827
    Abstract: An emissions control system is disclosed. The emissions control system may have a power source that creates a flow of exhaust, an SCR catalyst situated to receive the flow of exhaust, and an injector configured to inject a reduction agent into the flow of exhaust in the presence of the SCR catalyst. The emissions control system may further have a controller configured to calculate a spatially dependent surface coverage of the reduction agent on the SCR catalyst and substantially stop injection of the reduction agent when the spatially dependent surface coverage of the reduction agent exceeds a maximum surface coverage of the reduction agent at one or more spatial locations.
    Type: Application
    Filed: August 22, 2008
    Publication date: February 26, 2009
    Inventors: Zhiyong WEI, Christopher Alan Sharp
  • Publication number: 20090049828
    Abstract: An emissions control system is disclosed. The emissions control system may have a power source that creates a flow of exhaust and a filtering device that receives the flow of exhaust. A first sensor may be located at or upstream of the filtering device, the first sensor being configured to measure a first temperature, and an SCR catalyst may be located downstream of the filtering device. The emissions control system may also have an injector configured to inject a reduction agent into the flow of exhaust in the presence of the SCR catalyst. The emissions control system may further have a controller in communication with the first sensor. The controller may be configured to predict a change in an ability of the SCR catalyst to store reduction agent using a measured change in the first temperature and adjust the injector according to the predicted change in the storage ability of the SCR catalyst.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 26, 2009
    Inventors: Zhiyong Wei, Theodore M. Kostek, Christopher Alan Sharp
  • Patent number: 7357900
    Abstract: An emission control system for reducing NOx in the exhaust of a diesel engine. A partial oxidation system receives diesel fuel from the engine's fuel tank and partially oxidizes the diesel fuel into hydrogen. The hydrogen is then introduced into the main exhaust line and the hydrogen-enhanced exhaust is delivered to a hydrogen selective catalytic reduction unit, which uses the hydrogen to convert the NOx to nitrogen.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: April 15, 2008
    Assignee: Southwest Research Institute
    Inventors: Gordon James Johnston Bartley, Christopher Alan Sharp
  • Patent number: 7163668
    Abstract: An emission control system for reducing NOx in the exhaust of a diesel engine. A partial oxidation system receives diesel fuel from the engine's fuel tank and partially oxidizes the diesel fuel into hydrogen. The hydrogen is then introduced into the main exhaust line and the hydrogen-enhanced exhaust is delivered to a hydrogen selective catalytic reduction unit, which uses the hydrogen to convert the NOx to nitrogen.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: January 16, 2007
    Assignee: Southwest Research Institute
    Inventors: Gordon James Johnston Bartley, Christopher Alan Sharp
  • Patent number: 7135153
    Abstract: An emission control system for reducing NOx in the exhaust of a diesel engine. A partial oxidation system receives diesel fuel from the engine's fuel tank and partially oxidizes the diesel fuel into hydrogen. The hydrogen is then introduced into the main exhaust line and the hydrogen-enhanced exhaust is delivered to a hydrogen selective catalytic reduction unit, which uses the hydrogen to convert the NOx to nitrogen.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: November 14, 2006
    Assignee: Southwest Research Institute
    Inventors: Gordon James Johnston Bartley, Christopher Alan Sharp
  • Publication number: 20040170548
    Abstract: An emission control system for reducing NOx in the exhaust of a diesel engine. A partial oxidation system receives diesel fuel from the engine's fuel tank and partially oxidizes the diesel fuel into hydrogen. The hydrogen is then introduced into the main exhaust line and the hydrogen-enhanced exhaust is delivered to a hydrogen selective catalytic reduction unit, which uses the hydrogen to convert the NOx to nitrogen.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 2, 2004
    Applicant: Southwest Research Institute
    Inventors: Gordon James Johnston Bartley, Christopher Alan Sharp
  • Publication number: 20040018132
    Abstract: An emission control system for reducing NOx in the exhaust of a diesel engine. A partial oxidation system receives diesel fuel from the engine's fuel tank and partially oxidizes the diesel fuel into hydrogen. The hydrogen is then introduced into the main exhaust line and the hydrogen-enhanced exhaust is delivered to a hydrogen selective catalytic reduction unit, which uses the hydrogen to convert the NOx to nitrogen.
    Type: Application
    Filed: March 7, 2002
    Publication date: January 29, 2004
    Inventors: Gordon James Johnston Bartley, Christopher Alan Sharp
  • Patent number: 6001500
    Abstract: The present invention provides a method of manufacturing a cylindrical fuel cell comprising: providing an anode comprising a substantially solid cylindrical porous conductive matrix, said anode having an anode outer surface; intimately contacting a first proton exchange catalyst with said anode; conforming around and in intimate contact with said anode outer surface an inner polymer electrolyte membrane comprising a membrane outer surface and a membrane inner surface, wherein said membrane inner surface defines a tubular compartment and ionically communicates with said first proton exchange catalyst; providing a source of hydrogen gas in fluid communication with said first proton exchange catalyst; and, disposing around and in ionic communication with said membrane outer surface a cathode comprising a catalytically effective amount of a second proton exchange catalyst.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: December 14, 1999
    Inventors: Edward Albert Bass, Patrick Martin Merritt, Christopher Alan Sharp, Craig Marshall Wall, John Campbell