Patents by Inventor Cary A. Henry

Cary A. Henry 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).

  • Publication number: 20190301339
    Abstract: The systems and methods described herein beneficially provide an exit gas having a third, relatively low, NO/NO2 ratio that closely approximates the NO/NO2 ratio found in the exhaust of various internal combustion engines. The systems and methods described herein receive a feed gas having a first, relatively high NO/NO2 ratio. The feed gas is apportioned into a first feed gas portion that is passed through a non-thermal plasma generation system to provide an intermediate gas having a second, relatively very low, NO/NO2 ratio and a second feed gas portion having the first NO/NO2 ratio. The intermediate gas and the second feed gas portion are combined to provide the exist gas having the third, relatively low, NO/NO2 ratio. The systems and methods described herein beneficially provide an exit gas having a variable NO/NO2 ratio to simulate exhaust from a variety of internal combustion engines.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 3, 2019
    Inventors: Cary A. HENRY, Scott T. EAKLE
  • Patent number: 10408333
    Abstract: Methods and systems are provided for regulating the temperature of rear axle lubrication oil. In one example, a rear axle coolant system may include a coolant loop with a plurality of valves and sensors, regulating the coolant flow in heat exchange relationship with an exhaust gas heat recovery and storage system to deliver warm coolant to a rear axle heat exchanger to warm the rear axle lubrication oil. The method may regulate the components of the rear axle coolant system through a controller, receiving sensor input from the components of the coolant system.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: September 10, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Cary Cole, Sunil Katragadda, Phillip Bonkoski, David Karl Bidner, Michael Levin, Colby Jason Buckman, Danrich Henry Demitroff, Amey Y. Karnik, Furqan Shaikh
  • Patent number: 10378411
    Abstract: The present disclosure is directed at a dosing method and apparatus for treatment of reductant urea solutions with water soluble organometallic catalyst precursors which convert to active catalyst compounds in diesel exhaust gas systems. The active catalysts then promote hydrolysis of isocyanic acid into ammonia and/or decomposition of relatively high molecular weight deposits which deposits may otherwise reduce selective catalytic reduction efficiency.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: August 13, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Cary A. Henry, Ryan C. Hartley
  • Patent number: 10233809
    Abstract: A method to process exhaust gas expelled from at least one cylinder of a plurality of cylinders of an internal combustion engine, the method comprising providing an internal combustion engine, wherein the engine comprises a steam hydrocarbon reformer including a steam reformation catalyst, treating exhaust gas of the engine containing hydrocarbon and water by reacting the hydrocarbon and water in the presence of the steam reformation catalyst in the steam hydrocarbon reformer to provide treated exhaust gas. The treated exhaust gas includes carbon monoxide gas and hydrogen gas produced from the reaction, and mixing the treated exhaust gas, including the carbon monoxide gas and hydrogen gas produced in the steam hydrocarbon reformer with air to provide the mixture of air and treated exhaust gas introduced into the cylinders of the engine.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: March 19, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Cary A. Henry
  • Publication number: 20190048772
    Abstract: Technologies for producing an exhaust gas stream with controlled hydrocarbon species are disclosed. In some embodiments the technologies include an apparatus for producing an exhaust gas stream. The apparatus may include a burner for combusting primary fuel and produce an exhaust gas stream, and an exhaust pipe coupled to the burner to receive the exhaust gas stream. One or more supplemental fuel inlets may be coupled to the exhaust gas pipe for the addition of supplemental fuel to the exhaust gas stream. In embodiments, the speciation and total concentration of hydrocarbon compounds in the exhaust gas stream may be adjusted by controlling the relative amount of supplemental fuel added to the exhaust gas stream. Methods for producing an exhaust gas stream are also disclosed.
    Type: Application
    Filed: August 10, 2017
    Publication date: February 14, 2019
    Inventors: Cary A. HENRY, Cynthia Chaffin WEBB, Scott T. EAKLE
  • Patent number: 10190543
    Abstract: A method of providing internal EGR to an engine having at least one dedicated EGR cylinder. The main (non dedicated) cylinders are operated with internal EGR, in addition to external EGR from the dedicated EGR cylinder. The dedicated EGR cylinder has separate valve control so that it need not be operated with internal EGR, thereby allowing it to be operated at a richer air-to-fuel ratio.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: January 29, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Cary A Henry
  • Patent number: 10161283
    Abstract: A method of detecting urea-derived deposits in the exhaust line of an internal combustion engine having an SCR (selective catalyst reduction) aftertreatment system. A radio frequency (RF) transmitter is placed upstream of the SCR system's urea injector, and an RF receiver is placed downstream of the mixer. The transmitter and receiver are used to acquire baseline RF data representing a clean condition exhaust line without deposits. During subsequent operation of the engine, the transmitter and receiver are used to acquire subsequent RF data, which is compared to the baseline data after being corrected for temperature differences. If the comparison indicates the presence of one or more deposits, an alert signal is generated.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: December 25, 2018
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Scott Eakle, Cary Henry, Phillip Weber
  • Publication number: 20180334943
    Abstract: A method of detecting urea-derived deposits in the exhaust line of an internal combustion engine having an SCR (selective catalyst reduction) aftertreatment system. A radio frequency (RF) transmitter is placed upstream of the SCR system's urea injector, and an RF receiver is placed downstream of the mixer. The transmitter and receiver are used to acquire baseline RF data representing a clean condition exhaust line without deposits. During subsequent operation of the engine, the transmitter and receiver are used to acquire subsequent RF data, which is compared to the baseline data after being corrected for temperature differences. If the comparison indicates the presence of one or more deposits, an alert signal is generated.
    Type: Application
    Filed: May 16, 2017
    Publication date: November 22, 2018
    Inventors: Scott Eakle, Cary Henry, Phillip Weber
  • Patent number: 10125726
    Abstract: A method of operating an internal combustion engine having a plurality of cylinders, the method comprising: operating the engine with at least one of the cylinders of the engine as a dedicated exhaust gas recirculation (EGR) cylinder; mixing exhaust gas expelled from the dedicate EGR cylinder with air in an intake system to provide a mixture of exhaust gas and air; providing a first hydrocarbon fuel and a second hydrocarbon fuel; introducing a charge comprising the first hydrocarbon fuel, the second hydrocarbon fuel and the mixture of exhaust gas and air to the dedicated EGR cylinder; igniting the charge in the dedicated EGR cylinder; expelling exhaust gas from the dedicated EGR cylinder; and recirculating the exhaust gas to the intake system of the engine.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: November 13, 2018
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Cary A. Henry
  • Patent number: 10119500
    Abstract: A method of providing recirculated exhaust to an internal combustion engine. The engine has an EGR (exhaust gas recirculation loop) which may be a high pressure loop, a low pressure loop, or a dedicated cylinder loop. A catalyzed heat exchanger on the EGR loop has a steam reformation catalyst and a heat exchanger. The heat exchanger uses hot exhaust gas from the main exhaust line to heat the catalyst. A methane fuel source adds methane to the recirculated exhaust stream before it enters the catalyst, and the catalytic reaction increases the amount of hydrogen and carbon monoxide in the recirculated exhaust.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: November 6, 2018
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Cary A. Henry
  • Patent number: 9951702
    Abstract: An exhaust gas recirculation (EGR) system for an internal combustion engine having dedicated EGR and operating at a net stoichiometric air-fuel ratio. In such engines, one or more cylinders is operable as a dedicated EGR cylinder, such that all of the exhaust produced by the dedicated EGR cylinder(s) may be directed back to the intake manifold. Because the engine's exhaust is net stoichiometric, its exhaust aftertreatment system has a three-way catalyst. An EGR loop is configured to recirculate EGR from the dedicated EGR cylinder(s) to the engine's intake manifold. A diversion line, modulated with a valve, connects the EGR loop to the exhaust aftertreatment system, thereby allowing adjustment of the relative amounts of EGR to be recirculated and to be provided to the exhaust system.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: April 24, 2018
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Cary A. Henry, Terrence F. Alger, Jess W. Gingrich
  • Publication number: 20180094612
    Abstract: A method of providing recirculated exhaust to an internal combustion engine. The engine has an EGR (exhaust gas recirculation loop) which may be a high pressure loop, a low pressure loop, or a dedicated cylinder loop. A catalyzed heat exchanger on the EGR loop has a steam reformation catalyst and a heat exchanger. The heat exchanger uses hot exhaust gas from the main exhaust line to heat the catalyst. A methane fuel source adds methane to the recirculated exhaust stream before it enters the catalyst, and the catalytic reaction increases the amount of hydrogen and carbon monoxide in the recirculated exhaust.
    Type: Application
    Filed: October 3, 2016
    Publication date: April 5, 2018
    Inventor: Cary A. Henry
  • Publication number: 20180073472
    Abstract: A method of providing internal EGR to an engine having at least one dedicated EGR cylinder. The main (non dedicated) cylinders are operated with internal EGR, in addition to external EGR from the dedicated EGR cylinder. The dedicated EGR cylinder has separate valve control so that it need not be operated with internal EGR, thereby allowing it to be operated at a richer air-to-fuel ratio.
    Type: Application
    Filed: November 15, 2017
    Publication date: March 15, 2018
    Inventor: Cary A Henry
  • Patent number: 9797349
    Abstract: The present disclosure relates to an apparatus and method for increasing the level of hydrogen produced in an exhaust gas recirculation pathway within an internal combustion engine. A hydrocarbon water gas shift reformer is positioned in series with a water gas shift reformer within the exhaust gas recirculation pathway to improve the yield of hydrogen and to improve the relative efficiency of both catalytic procedures.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: October 24, 2017
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Cary A. Henry
  • Patent number: 9771850
    Abstract: Reductant delivery systems are disclosed that include a dry reductant source and a liquid reductant source which are operable to selectively provide gaseous reductant and liquid reductant to an exhaust aftertreatment system for treatment and reduction of NOx emissions. The gaseous reductant is provided to the exhaust aftertreatment system for treatment of NOx emissions under a first temperature condition associated with the exhaust system and the liquid reductant for treatment of NOx emissions under a second temperature condition associated with the exhaust system.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: September 26, 2017
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Cary Henry, Steven J. Kolhouse
  • Patent number: 9726091
    Abstract: Active control of one or more exhaust gas recirculation loops is provided to manage and EGR fraction in the charge flow to produce desired operating conditions and/or provide diagnostics in response to at least one of an oxygen concentration and a NOx concentration in the charge flow and in the exhaust flow.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: August 8, 2017
    Assignee: Cummins Inc.
    Inventors: Michael J. Ruth, Michael J. Cunningham, Cary A. Henry
  • Patent number: 9556779
    Abstract: Solid storage media stores a reductant in a reductant source that is released from the solid storage media in a gaseous form into an exhaust system. A leak detection and/or leak mitigation system, method and apparatus is disclosed for the gaseous reductant.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: January 31, 2017
    Assignee: Cummins Inc.
    Inventors: Michael J. Ruth, Cary Henry
  • Patent number: 9512762
    Abstract: An exhaust gas recirculation (EGR) system for an internal combustion engine having dedicated EGR and operating at a lean air-fuel ratio. In such engines, one or more cylinders is operable as a dedicated EGR cylinder, such that all of the exhaust produced by the dedicated EGR cylinder(s) may be recirculated to the engine's main (non dedicated) cylinders. Because the engine is lean burn, its exhaust aftertreatment system has a NOx-reducing device. An EGR loop is configured to recirculate EGR from the dedicated EGR cylinder(s) to the engine's intake manifold. A diversion line connects the EGR loop to the exhaust aftertreatment system, thereby delivering EGR as syngas for the NOx-reducing device. The syngas is used either directly as a reductant or to a catalyst that reduces the syngas to ammonia for use as a reductant.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: December 6, 2016
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Charles E. Roberts, Jr., Cary A. Henry
  • Publication number: 20160341089
    Abstract: Reductant delivery systems are disclosed that include a dry reductant source and a liquid reductant source which are operable to selectively provide gaseous reductant and liquid reductant to an exhaust aftertreatment system for treatment and reduction of NOx emissions. The gaseous reductant is provided to the exhaust aftertreatment system for treatment of NOx emissions under a first temperature condition associated with the exhaust system and the liquid reductant for treatment of NOx emissions under a second temperature condition associated with the exhaust system.
    Type: Application
    Filed: August 8, 2016
    Publication date: November 24, 2016
    Applicant: Cummins Emission Solutions Inc.
    Inventors: Cary HENRY, Steven J. KOLHOUSE
  • Publication number: 20160341157
    Abstract: The present disclosure relates to an apparatus and method for increasing the level of hydrogen produced in an exhaust gas recirculation pathway within an internal combustion engine. A hydrocarbon water gas shift reformer is positioned in series with a water gas shift reformer within the exhaust gas recirculation pathway to improve the yield of hydrogen and to improve the relative efficiency of both catalytic procedures.
    Type: Application
    Filed: May 21, 2015
    Publication date: November 24, 2016
    Inventor: Cary A. HENRY