Patents by Inventor John W. DeGeorge
John W. DeGeorge 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: 10458302Abstract: An exhaust aftertreatment system may include a reductant tank, a gaseous ammonia source, an injector, first conduit and a second conduit. The injector may receive the liquid reductant from the reductant tank and the gaseous ammonia from the gaseous ammonia source and inject the liquid reductant into a stream of exhaust gas in a first mode, inject the gaseous ammonia into the stream of exhaust gas in a second mode, and both the liquid reductant and the gaseous ammonia into the stream of exhaust gas in a third mode. The first conduit may communicate liquid reductant from the reductant tank to the injector. The second conduit may communicate gaseous ammonia from the gaseous ammonia source to the injector.Type: GrantFiled: August 19, 2016Date of Patent: October 29, 2019Assignees: Tenneco Automotive Operating Company Inc., Tenneco GmbHInventors: Mark Devito, Ryan A. Floyd, Adam J. Kotrba, Padmanabha R. Ettireddy, Michael C. Bradford, Bradley Fingland, John W. Degeorge, Philipp Kreutziger, Manuel Kluck, Michael Flockert, Mathias Hund, Eric A. Hein
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Publication number: 20180238217Abstract: An exhaust aftertreatment system may include a reductant tank, a gaseous ammonia source, an injector, first conduit and a second conduit. The injector may receive the liquid reductant from the reductant tank and the gaseous ammonia from the gaseous ammonia source and inject the liquid reductant into a stream of exhaust gas in a first mode, inject the gaseous ammonia into the stream of exhaust gas in a second mode, and both the liquid reductant and the gaseous ammonia into the stream of exhaust gas in a third mode. The first conduit may communicate liquid reductant from the reductant tank to the injector. The second conduit may communicate gaseous ammonia from the gaseous ammonia source to the injector.Type: ApplicationFiled: August 19, 2016Publication date: August 23, 2018Applicants: Tenneco Automotive Operating Company Inc., Tenneco GmbHInventors: Mark DEVITO, Ryan A. FLOYD, Adam J. KOTRBA, Padmanabha R. ETTIREDDY, Michael C. BRADFORD, Bradley FINGLAND, John W. DEGEORGE, Philipp KREUTZIGER, Manuel KLUCK, Michael FLOCKERT, Mathias HUND, Eric A. HEIN
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Patent number: 9702284Abstract: An exhaust aftertreatment system may include an oxidation catalyst, a soot sensor, a filter and a control module. The oxidation catalyst may be disposed in an exhaust gas passageway and may receive exhaust gas discharged from an engine. The soot sensor may be at least partially disposed in the exhaust gas passageway downstream of the oxidation catalyst. The filter may be disposed in the exhaust gas passageway downstream of the soot sensor. The control module may be in communication with the soot sensor and may determine a face-plugging condition of the oxidation catalyst based on data received from the soot sensor.Type: GrantFiled: January 15, 2015Date of Patent: July 11, 2017Assignee: Tenneco Automotive Operating Company Inc.Inventor: John W. DeGeorge
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Patent number: 9702291Abstract: An exhaust aftertreatment system may include a reductant tank, a reactor system, a storage tank, a first conduit and a second conduit. The reactor system may receive reductant from the reductant tank and may output a gas comprising ammonia. The storage tank may receive gas comprising ammonia from the reactor system and may store a volume of gas comprising ammonia. The first conduit may communicate gas comprising ammonia from the reactor system to a stream of exhaust gas. The first conduit may bypass the storage tank. The second conduit may communicate gas comprising ammonia from the storage tank to the stream of exhaust gas.Type: GrantFiled: November 3, 2015Date of Patent: July 11, 2017Assignee: Tenneco Automotive Operating Company Inc.Inventors: Padmanabha R. Ettireddy, Bradley Fingland, Adam J. Kotrba, John W. Degeorge, Michael C. Bradford
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Publication number: 20170122169Abstract: An exhaust aftertreatment system may include a reductant tank, a reactor system, a storage tank, a first conduit and a second conduit. The reactor system may receive reductant from the reductant tank and may output a gas comprising ammonia. The storage tank may receive gas comprising ammonia from the reactor system and may store a volume of gas comprising ammonia. The first conduit may communicate gas comprising ammonia from the reactor system to a stream of exhaust gas. The first conduit may bypass the storage tank. The second conduit may communicate gas comprising ammonia from the storage tank to the stream of exhaust gas.Type: ApplicationFiled: November 3, 2015Publication date: May 4, 2017Inventors: Padmanabha R. ETTIREDDY, Bradley FINGLAND, Adam J. KOTRBA, John W. DEGEORGE, Michael C. BRADFORD
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Publication number: 20160208666Abstract: An exhaust aftertreatment system may include an oxidation catalyst, a soot sensor, a filter and a control module. The oxidation catalyst may be disposed in an exhaust gas passageway and may receive exhaust gas discharged from an engine. The soot sensor may be at least partially disposed in the exhaust gas passageway downstream of the oxidation catalyst. The filter may be disposed in the exhaust gas passageway downstream of the soot sensor. The control module may be in communication with the soot sensor and may determine a face-plugging condition of the oxidation catalyst based on data received from the soot sensor.Type: ApplicationFiled: January 15, 2015Publication date: July 21, 2016Inventor: John W. DeGeorge
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Patent number: 9371767Abstract: An aftertreatment system for treating exhaust gas discharged from a combustion engine may include a particulate filter, a reductant-injection system, an ammonia sensor and a control module. The particulate filter may be configured to filter exhaust gas discharged from the combustion engine. The reductant-injection system may be configured to inject a reductant into a stream of the exhaust gas upstream of the particulate filter. The ammonia sensor may be configured to sense a concentration of ammonia in the stream of exhaust gas downstream of the particulate filter. The control module may be in communication with the ammonia sensor and may determine a soot load of the particulate filter based on data received from the ammonia sensor.Type: GrantFiled: September 20, 2013Date of Patent: June 21, 2016Assignee: Tenneco Automotive Operating Company Inc.Inventors: John W. DeGeorge, Timothy P. Gardner
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Patent number: 9108157Abstract: An exhaust after-treatment system including an exhaust passage having at least a first portion and a second portion. An exhaust treatment component may be positioned within the exhaust passage between the first and second portions, and an insulating blanket insulates each of the first portion, second portion, and the exhaust treatment component. Temperature sensors may be positioned at the first portion, the second portion, the exhaust treatment component, wherein each sensor monitors the temperature at its location. A controller may have access to temperature data associated with an insulated exhaust after-treatment system, and the controller compares the monitored temperatures to the temperature data to determine whether a difference exceeding a predetermined threshold exists. If the difference exceeds a predetermined threshold, the controller outputs an error signal identifying particular portions of the exhaust system that are no longer insulated.Type: GrantFiled: January 14, 2014Date of Patent: August 18, 2015Assignee: Tenneco Automotive Operating Company Inc.Inventors: Michael Golin, John W. DeGeorge
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Publication number: 20150196877Abstract: An exhaust after-treatment system including an exhaust passage having at least a first portion and a second portion. An exhaust treatment component may be positioned within the exhaust passage between the first and second portions, and an insulating blanket insulates each of the first portion, second portion, and the exhaust treatment component. Temperature sensors may be positioned at the first portion, the second portion, the exhaust treatment component, wherein each sensor monitors the temperature at its location. A controller may have access to temperature data associated with an insulated exhaust after-treatment system, and the controller compares the monitored temperatures to the temperature data to determine whether a difference exceeding a predetermined threshold exists. If the difference exceeds a predetermined threshold, the controller outputs an error signal identifying particular portions of the exhaust system that are no longer insulated.Type: ApplicationFiled: January 14, 2014Publication date: July 16, 2015Applicant: Tenneco Automotive Operating Company Inc.Inventors: Michael Golin, John W. DeGeorge
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Patent number: 9046021Abstract: A system and method for controlling the regeneration of an exhaust gas particulate filter. When regeneration is initiated, an outlet temperature of an exhaust gas oxidation catalyst and an outlet temperature of the exhaust gas particulate filter are detected. As part of a closed loop non-linear temperature targeting regime, the maximum of the outlet temperature of the exhaust gas oxidation catalyst and the outlet temperature of the exhaust gas particulate filter is set as a reference temperature. A regeneration temperature target is initialized and indexed based on a profile time and the reference temperature. As part of a closed loop fuel control regime at least one hydrocarbon dosing value is determined based on an exhaust mass flow, the reference temperature, and the regeneration temperature target.Type: GrantFiled: June 5, 2013Date of Patent: June 2, 2015Assignee: Tenneco Automotive Operating Company Inc.Inventor: John W. DeGeorge
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Publication number: 20150086426Abstract: An aftertreatment system for treating exhaust gas discharged from a combustion engine may include a particulate filter, a reductant-injection system, an ammonia sensor and a control module. The particulate filter may be configured to filter exhaust gas discharged from the combustion engine. The reductant-injection system may be configured to inject a reductant into a stream of the exhaust gas upstream of the particulate filter. The ammonia sensor may be configured to sense a concentration of ammonia in the stream of exhaust gas downstream of the particulate filter. The control module may be in communication with the ammonia sensor and may determine a soot load of the particulate filter based on data received from the ammonia sensor.Type: ApplicationFiled: September 20, 2013Publication date: March 26, 2015Applicant: Tenneco Automotive Operating Company Inc.Inventors: John W. DeGeorge, Timothy P. Gardner
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Publication number: 20140364301Abstract: A system and method for controlling the regeneration of an exhaust gas particulate filter. When regeneration is initiated, an outlet temperature of an exhaust gas oxidation catalyst and an outlet temperature of the exhaust gas particulate filter are detected. As part of a closed loop non-linear temperature targeting regime, the maximum of the outlet temperature of the exhaust gas oxidation catalyst and the outlet temperature of the exhaust gas particulate filter is set as a reference temperature. A regeneration temperature target is initialized and indexed based on a profile time and the reference temperature. As part of a closed loop fuel control regime at least one hydrocarbon dosing value is determined based on an exhaust mass flow, the reference temperature, and the regeneration temperature target.Type: ApplicationFiled: June 5, 2013Publication date: December 11, 2014Inventor: John W. DeGeorge
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Publication number: 20140260190Abstract: An engine exhaust treatment and fuel efficiency improvement system includes a NOx module that determines a quantity of NOx emitted from an engine. A selective catalytic reduction (SCR) efficiency module determines a SCR efficiency to reduce the determined NOx quantity below a predetermined threshold. A reagent dosing module determines a quantity of reagent required to reduce the NOx quantity below the predetermined threshold. An injection optimization module determines whether an increase in system operating efficiency may be obtained by changing an injected reagent quantity and an engine operating parameter in cooperation with each other while maintaining the NOx quantity below the threshold, the system being operable to change the reagent injection quantity and engine operating parameter to increase system efficiency.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicant: TENNECO AUTOMOTIVE OPERATING COMPANY INC.Inventor: John W. DeGeorge
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Patent number: 7854683Abstract: A system for controlling a torque converter clutch in a vehicle powertrain includes a controller having an input for receiving powertrain operating parameter information. The controller is configured to determine a torque converter speed ratio based on the powertrain operating parameter information and to compare the speed ratio to a specified speed ratio limit. The controller is further configured to determine a target torque converter slip when the speed ratio exceeds or meets or exceeds the specified speed ratio limit; to compare the target slip with a desired slip value based on an vehicle noise, vibration or harshness (NVH) limit; and to control torque transmission of the torque converter clutch based on comparison of the target slip and the desired slip value. A method for controlling a torque converter clutch is also provided.Type: GrantFiled: June 8, 2006Date of Patent: December 21, 2010Assignee: Chrysler Group LLCInventors: John W. DeGeorge, Javed A. Dada, Harish Sivasubramanian, Gary K. Lowe, Gary Binienda, Peter Hartman
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Patent number: 7415872Abstract: In a method for characterizing a road surface beneath a moving vehicle whose powertrain includes a torque converter coupling the engine to a driven wheel, a set of successive values for the torque converter's slip error rate is generated using filtered values for engine speed and torque converter turbine speed. The road surface characteristic is identified based on the set of slip error rate values, as through a comparison of the set with a plurality of case statements, wherein each case statement corresponds with a different road characteristic and/or general surface type. Weighted average values are calculated based on subsets of the values within the set, for use in identifying transitions from one type of surface to another, or one surface characteristic to another. Indicated slip error rates generated in response to changes in an engine torque demand request are also identified to avoid a false indication.Type: GrantFiled: October 9, 2006Date of Patent: August 26, 2008Assignee: Chrysler LLCInventors: John W. DeGeorge, Gary K. Lowe
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Publication number: 20080110249Abstract: In a method for characterizing a road surface beneath a moving vehicle whose powertrain includes a torque converter coupling the engine to a driven wheel, a set of successive values for the torque converter's slip error rate is generated using filtered values for engine speed and torque converter turbine speed. The road surface characteristic is identified based on the set of slip error rate values, as through a comparison of the set with a plurality of case statements, wherein each case statement corresponds with a different road characteristic and/or general surface type. Weighted average values are calculated based on subsets of the values within the set, for use in identifying transitions from one type of surface to another, or one surface characteristic to another. Indicated slip error rates generated in response to changes in an engine torque demand request are also identified to avoid a false indication.Type: ApplicationFiled: October 9, 2006Publication date: May 15, 2008Inventors: John W. DeGeorge, Gary K. Lowe
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Publication number: 20070287594Abstract: A system for controlling a torque converter clutch in a vehicle powertrain includes a controller having an input for receiving powertrain operating parameter information. The controller is configured to determine a torque converter speed ratio based on the powertrain operating parameter information and to compare the speed ratio to a specified speed ratio limit. The controller is further configured to determine a target torque converter slip when the speed ratio exceeds or meets or exceeds the specified speed ratio limit; to compare the target slip with a desired slip value based on an vehicle noise, vibration or harshness (NVH) limit; and to control torque transmission of the torque converter clutch based on comparison of the target slip and the desired slip value. A method for controlling a torque converter clutch is also provided.Type: ApplicationFiled: June 8, 2006Publication date: December 13, 2007Inventors: John W. DeGeorge, Javed A. Dada, Harish Sivasubramanian, Gary K. Lowe, Gary Binienda, Peter Hartman
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Patent number: 6135087Abstract: A spark control method for a vehicle engine is provided for enhancing engine performance and fuel economy prior to a fully warm state. The spark control method is based on coolant temperature and engine speed while accounting for an engine position and time from the start-to-run transfer. More particularly, the methodology of the present invention initially determines if the desired spark advance is before top dead center and if the throttle is open. If so, the methodology loads engine speed and coolant temperature to the engine control unit and interpolates a spark advance multiplier value. Thereafter, the current engine position pulse is loaded and an engine position pulse multiplier is interpolated and applied to the spark advance multiplier value. Next, the time since the start-to-run transfer is loaded and a time since start-to-run transfer multiplier is interpolated and applied to the spark advance multiplier value.Type: GrantFiled: December 15, 1998Date of Patent: October 24, 2000Assignee: Chrysler CorporationInventors: John W. DeGeorge, Robert T. Forgiel, Howard W. Krausman
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Patent number: 6003493Abstract: A method of reducing vehicle component loading variations on an internal combustion engine in a motor vehicle includes the step of receiving a request to actuate a vehicle component and modifying a spark timing sequence for each spark plug of the internal combustion engine. The method also includes the step of actuating said vehicle component. The method further includes opposing a vehicle component torque generated by said actuation of said vehicle component with an adjustment of the internal combustion engine torque by reverting said modification of said spark timing sequence of each spark plug of the internal combustion engine.Type: GrantFiled: October 7, 1998Date of Patent: December 21, 1999Assignee: Chrysler CorporationInventors: John W. DeGeorge, Howard W. Krausman, Adam E. Pachana, Gang Chen
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Patent number: 5806485Abstract: A method of air conditioning compensation is disclosed for a motor vehicle having an air conditioning (AC) system with a compressor, an automatic idle speed (AIS) compensation mechanism having an AIS position and an engine control mechanism. The method includes the steps of comparing a head pressure on the compressor to a predetermined continuous curve of relative AIS position and identifying a first point on the curve of relative AIS position associated with the head pressure. The method also includes the steps of identifying a second point and a third point on the curve of relative AIS position that the first point is between and weighting the second point with respect to the first point and weighting the third point with respect to the first point.Type: GrantFiled: August 29, 1997Date of Patent: September 15, 1998Assignee: Chrysler CorporationInventor: John W. DeGeorge