Patents by Inventor Donald W. Stanton
Donald W. Stanton 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: 9038373Abstract: A system includes an engine, an exhaust conduit for the engine, a first SCR catalyst fluidly coupled to the exhaust conduit, and a second SCR catalyst fluidly coupled to the exhaust conduit at a position downstream of the first SCR catalyst. The system further includes an ammonia sensor positioned between the first and second SCR catalysts. A reductant doser is positioned upstream of the first SCR catalyst. The system includes a controller that determines an amount of NH3 present from the NH3 sensor, and computes an actuator response function from at least one operating condition of the first SCR catalyst. The actuator response function includes a reductant injector response as a function of the amount of NH3, and the actuator response function includes a response discontinuity. The controller further determines a reductant injection amount from the amount of NH3 and the actuator response function, and provides a reductant injector command.Type: GrantFiled: March 18, 2011Date of Patent: May 26, 2015Assignee: Cummins Inc.Inventors: Mert Geveci, Andrew W. Osburn, Donald W. Stanton
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Patent number: 8813690Abstract: A technique for engine control to account for fuel effects including providing an internal combustion engine and a controller to regulate operation thereof, the engine being operable to combust a fuel to produce an exhaust gas; establishing a plurality of fuel property inputs; establishing a plurality of engine performance inputs; generating engine control information as a function of the fuel property inputs and the engine performance inputs; and accessing the engine control information with the controller to regulate at least one engine operating parameter.Type: GrantFiled: November 1, 2010Date of Patent: August 26, 2014Assignee: Cummins Inc.Inventors: Shankar Kumar, Timothy R. Frazier, Donald W. Stanton, Yi Xu, Bruce G. Bunting, Leslie R. Wolf
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Patent number: 8677970Abstract: A piston and an engine are provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of combustion chamber features. More particularly, configuration parameters for a piston crown and a piston bowl located within the piston crown are provided. The piston bowl configuration results in a combustion process that yields decreased heat transfer to a cylinder head of the internal combustion engine as well as reduced NOx emissions.Type: GrantFiled: March 16, 2012Date of Patent: March 25, 2014Assignee: Cummins Intellectual Property, Inc.Inventors: Rishikesh Venugopal, Donald W. Stanton, Bhargav Ranganath, Thomas Geyer
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Publication number: 20120234285Abstract: A piston and an engine are provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of combustion chamber features. More particularly, configuration parameters for a piston crown and a piston bowl located within the piston crown are provided. The piston bowl configuration results in a combustion process that yields decreased heat transfer to a cylinder head of the internal combustion engine as well as reduced NOx emissions.Type: ApplicationFiled: March 16, 2012Publication date: September 20, 2012Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.Inventors: Rishikesh VENUGOPAL, Donald W. STANTON, Bhargav RANGANATH, Thomas GEYER
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Publication number: 20110265452Abstract: A system includes an engine, an exhaust conduit for the engine, a first SCR catalyst fluidly coupled to the exhaust conduit, and a second SCR catalyst fluidly coupled to the exhaust conduit at a position downstream of the first SCR catalyst. The system further includes an ammonia sensor positioned between the first and second SCR catalysts. A reductant doser is positioned upstream of the first SCR catalyst. The system includes a controller that determines an amount of NH3 present from the NH3 sensor, and computes an actuator response function from at least one operating condition of the first SCR catalyst. The actuator response function includes a reductant injector response as a function of the amount of NH3, and the actuator response function includes a response discontinuity. The controller further determines a reductant injection amount from the amount of NH3 and the actuator response function, and provides a reductant injector command.Type: ApplicationFiled: March 18, 2011Publication date: November 3, 2011Inventors: Mert Geveci, Andrew W. Osburn, Donald W. Stanton
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Publication number: 20110265773Abstract: A diesel fuel composition is disclosed, as well as a method for reducing NOx and smoke emissions from a diesel engine at minimum fuel consumption which comprises adding to the diesel engine at least one diesel fuel or blending component for a diesel fuel which has a combination of a low T50 in the range of from 190° C. to 280° C., a high cetane number in the range of from 31 to 60, and optionally a high distillation curve slope in the range of from 58° C. to 140° C., which combination is effective to afford a combination of the lowest NOx and smoke emissions at the lowest fuel consumption at independent engine control values for the diesel engine that are optimum to afford production of a combination of the lowest NOx and smoke emissions at the lowest fuel consumption, whereby the NOx and smoke emissions from the diesel engine are reduced by at least 10% and 15%, respectively.Type: ApplicationFiled: October 29, 2010Publication date: November 3, 2011Applicant: BP Corporation North America Inc.Inventors: Yi Xu, Leslie R. Wolf, Shankar Kumar, Donald W. Stanton, Timothy R. Frazier, Bruce G. Bunting
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Publication number: 20110160982Abstract: A technique for engine control to account for fuel effects including providing an internal combustion engine and a controller to regulate operation thereof, the engine being operable to combust a fuel to produce an exhaust gas; establishing a plurality of fuel property inputs; establishing a plurality of engine performance inputs; generating engine control information as a function of the fuel property inputs and the engine performance inputs; and accessing the engine control information with the controller to regulate at least one engine operating parameter.Type: ApplicationFiled: November 1, 2010Publication date: June 30, 2011Inventors: Shankar Kumar, Timothy R. Frazier, Donald W. Stanton, Yi Xu, Bruce G. Bunting, Leslie R. Wolf
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Patent number: 7210448Abstract: An engine is provided which includes various precise configuration parameters, including dimensions, shape and/or relative positioning of the combustion chamber features, resulting in a combustion process minimizing NOx emissions and particulates. The combustion chamber includes one or more of the following: a spray angle relative to an inner bowl floor angle; a vertical distance from the tip of the piston bowl to the injection orifices; a number of injection orifices; a swirl ratio; a vertical distance from the injection orifices to an inner face of the cylinder head; a radius of curvature of an outer bowl section; chamfer with dimensional parameters; and a transition radius.Type: GrantFiled: September 16, 2005Date of Patent: May 1, 2007Assignee: Cummins, Inc.Inventors: Donald W. Stanton, Randall L. Zehr, Wayne A. Eckerle, Francois Ntone
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Patent number: 7008177Abstract: A fluid pump including provisions for cooling and/or flushing in the vicinity of a static seal. In one embodiment, the invention includes an open channel fluid passageway defined on a generally flat surface of a pump housing. A centrifugal rotor with a generally flat backplate rotates proximate a surface of the housing. The fluid passageways are adapted and configured to have a pathway that includes a directional component parallel to the direction of rotation, such that fluid drag from the rotating backplate induces flow within the passageway. The passages of the exit can be positioned such that flow exiting the passageway is at least partly tangential to the seal and/or the seal housing.Type: GrantFiled: November 10, 2003Date of Patent: March 7, 2006Assignee: Cummins Inc.Inventors: Timothy D. Britt, Randall J. Stafford, Donald W. Stanton
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Patent number: 6966294Abstract: An engine is provided which includes various precise configuration parameters, including dimensions, shape and/or relative positioning of the combustion chamber features, resulting in a combustion process minimizing NOx emissions and particulates. The combustion chamber includes a spray angle relative to an inner bowl floor angle that maximizes the amount of fuel in contact with the inner bowl, in combination with one or more of the following: a vertical distance from the tip of the piston bowl to the injection orifices; a number of injection orifices; a swirl ratio; a vertical distance from the injection orifices to an inner face of the cylinder head; a distance from the piston top surface to the cylinder head; a radius of curvature of an outer bowl section; a radius of curvature at an edge of the piston bowl; a ratio of the piston bowl diameter to the cylinder diameter; and the cylinder diameter.Type: GrantFiled: April 1, 2004Date of Patent: November 22, 2005Assignee: Cummins Inc.Inventors: Wayne A. Eckerle, Donald W. Stanton, Francois Ntone
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Publication number: 20040182358Abstract: An engine is provided which includes various precise configuration parameters, including dimensions, shape and/or relative positioning of the combustion chamber features, resulting in a combustion process minimizing NOx emissions and particulates. The combustion chamber includes a spray angle relative to an inner bowl floor angle that maximizes the amount of fuel in contact with the inner bowl, in combination with one or more of the following: a vertical distance from the tip of the piston bowl to the injection orifices; a number of injection orifices; a swirl ratio; a vertical distance from the injection orifices to an inner face of the cylinder head; a distance from the piston top surface to the cylinder head; a radius of curvature of an outer bowl section; a radius of curvature at an edge of the piston bowl; a ratio of the piston bowl diameter to the cylinder diameter; and the cylinder diameter.Type: ApplicationFiled: April 1, 2004Publication date: September 23, 2004Applicant: Cummins Inc.Inventors: Wayne A. Eckerle, Donald W. Stanton, Francois Ntone
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Publication number: 20040136826Abstract: A fluid pump including provisions for cooling and/or flushing in the vicinity of a static seal. In one embodiment, the invention includes an open channel fluid passageway defined on a generally flat surface of a pump housing. A centrifugal rotor with a generally flat backplate rotates proximate a surface of the housing. The fluid passageways are adapted and configured to have a pathway that includes a directional component parallel to the direction of rotation, such that fluid drag from the rotating backplate induces flow within the passageway. The passages of the exit can be positioned such that flow exiting the passageway is at least partly tangential to the seal and/or the seal housing.Type: ApplicationFiled: November 10, 2003Publication date: July 15, 2004Inventors: Timothy D. Britt, Randall J. Stafford, Donald W. Stanton
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Patent number: 6732703Abstract: An engine is provided which includes various precise configuration parameters, including dimensions, shape and/or relative positioning of the combustion chamber features, resulting in a combustion process minimizing NOx emissions and particulates. The combustion chamber includes a spray angle relative to an inner bowl floor angle that maximizes the amount of fuel in contact with the inner bowl, in combination with one or more of the following: a vertical distance from the tip of the piston bowl to the injection orifices; a number of injection orifices; a swirl ratio; a vertical distance from the injection orifices to an inner face of the cylinder head; a distance from the piston top surface to the cylinder head; a radius of curvature of an outer bowl section; a radius of curvature at an edge of the piston bowl; a ratio of the piston bowl diameter to the cylinder diameter; and the cylinder diameter.Type: GrantFiled: June 11, 2002Date of Patent: May 11, 2004Assignee: Cummins Inc.Inventors: Wayne A. Eckerle, Donald W. Stanton, Francois Ntone
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Publication number: 20030226538Abstract: An engine is provided which includes various precise configuration parameters, including dimensions, shape and/or relative positioning of the combustion chamber features, resulting in a combustion process minimizing NOx emissions and particulates. The combustion chamber includes a spray angle relative to an inner bowl floor angle that maximizes the amount of fuel in contact with the inner bowl, in combination with one or more of the following: a vertical distance from the tip of the piston bowl to the injection orifices; a number of injection orifices; a swirl ratio; a vertical distance from the injection orifices to an inner face of the cylinder head; a distance from the piston top surface to the cylinder head; a radius of curvature of an outer bowl section; a radius of curvature at an edge of the piston bowl; a ratio of the piston bowl diameter to the cylinder diameter; and the cylinder diameter.Type: ApplicationFiled: June 11, 2002Publication date: December 11, 2003Applicant: Cummins Inc.Inventors: Wayne A. Eckerle, Donald W. Stanton, Francois Ntone
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Patent number: RE46806Abstract: A piston and an engine are provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of combustion chamber features. More particularly, configuration parameters for a piston crown and a piston bowl located within the piston crown are provided. The piston bowl configuration results in a combustion process that yields decreased heat transfer to a cylinder head of the internal combustion engine as well as reduced NOx emissions.Type: GrantFiled: March 25, 2016Date of Patent: April 24, 2018Assignee: Cummins Intellectual Property, Inc.Inventors: Rishikesh Venugopal, Donald W. Stanton, Bhargav Ranganath, Thomas Bodin