Patents by Inventor Paul Douglas Free
Paul Douglas Free 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: 11156144Abstract: A controller for a dosing module including a pump, an inlet manifold coupled to the pump, a nozzle, an outlet manifold coupled to the nozzle, a first branch coupled to the inlet manifold and the outlet manifold and having a first flow restrictor and a first valve, a second branch coupled to the inlet manifold and the outlet manifold and having a second flow restrictor and a second valve, and a sensor coupled to the inlet manifold and the outlet manifold, includes an input/output interface and a processing circuit. The input/output interface is configured to electronically communicate with the first valve and the second valve. The processing circuit configured to selectively cause the first valve to be in a first valve first position, in which the first valve facilitates fluid communication from the inlet manifold to the outlet manifold through the first branch, and a first valve second position.Type: GrantFiled: December 20, 2019Date of Patent: October 26, 2021Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventors: Taren DeHart, Vaibhav J. Lawand, Stephen M. Holl, Paul Douglas Free, Nassim Khaled, Colin L. Norris
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Patent number: 11047281Abstract: The present disclosure provides a method of treating a diesel exhaust system that includes heating a reagent to a temperature such that at least a portion of the reagent is heated to a gaseous phase, injecting the reagent into a diesel exhaust stream upstream of a catalyst, and reacting the diesel exhaust with the heated reagent over the catalyst to convert NOx into N2 and H2O. The heating modulates a mass flow rate of the reagent by converting a state of matter of the reagent at least partially to the gaseous phase prior to or after being injected, and the heated reagent in the gaseous form reduces deposit formations within the diesel exhaust system.Type: GrantFiled: June 15, 2018Date of Patent: June 29, 2021Assignee: Watlow Electric Manufacturing CompanyInventors: Mark Denis Everly, Paul Douglas Free, Jeffrey R. Diestelmeier, Andrew D. Selvy
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Publication number: 20200123952Abstract: A controller for a dosing module including a pump, an inlet manifold coupled to the pump, a nozzle, an outlet manifold coupled to the nozzle, a first branch coupled to the inlet manifold and the outlet manifold and having a first flow restrictor and a first valve, a second branch coupled to the inlet manifold and the outlet manifold and having a second flow restrictor and a second valve, and a sensor coupled to the inlet manifold and the outlet manifold, includes an input/output interface and a processing circuit. The input/output interface is configured to electronically communicate with the first valve and the second valve. The processing circuit configured to selectively cause the first valve to be in a first valve first position, in which the first valve facilitates fluid communication from the inlet manifold to the outlet manifold through the first branch, and a first valve second position.Type: ApplicationFiled: December 20, 2019Publication date: April 23, 2020Applicant: Cummins Emission Solutions Inc.Inventors: Taren DeHart, Vaibhav J. Lawand, Stephen M. Holl, Paul Douglas Free, Nassim Khaled, Colin L. Norris
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Patent number: 10544721Abstract: A dosing module includes an inlet manifold, an outlet manifold, a first branch, and a second branch. The inlet manifold is configured to selectively receive reductant from a pump. The outlet manifold is configured to selectively provide the reductant to a nozzle. The first branch is coupled to the inlet manifold and the outlet manifold. The first branch is configured to selectively provide the reductant from the inlet manifold to the outlet manifold. The first branch includes a first flow restrictor configured to restrict the reductant as the reductant is provided to the outlet manifold. The second branch is coupled to the inlet manifold and the outlet manifold. The second branch is configured to selectively provide the reductant from the inlet manifold to the outlet manifold separately from the first branch. The second branch includes a second flow restrictor that is configured to restrict the reductant.Type: GrantFiled: December 11, 2017Date of Patent: January 28, 2020Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventors: Taren DeHart, Vaibhav J. Lawand, Stephen M. Holl, Paul Douglas Free, Nassim Khaled, Colin L. Norris
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Patent number: 10480377Abstract: A system and method are disclosed for improving the performance of an aftertreatment system by elevating its temperature above an activation temperature. According to at least one aspect of the present disclosure, the method includes injecting a quantity of a fuel into certain fueled cylinders of a plurality of combustion cylinders of an internal combustion engine, the plurality of combustion cylinders further including non-fueled cylinders. Exhaust from the fueled cylinders is directed through the aftertreatment system while uncombusted gas from the non-fueled cylinders is directed away from the aftertreatment system. In certain embodiments, the uncombusted gas may be directed into an intake manifold in fluid communication with the plurality of combustion cylinders through an orifice. The system includes an engine having exhaust valves to control flow of the exhaust and uncombusted gas and a controller configured to perform the operations of the method.Type: GrantFiled: February 14, 2017Date of Patent: November 19, 2019Assignee: Cummins Inc.Inventors: Paul Douglas Free, Jennifer Kay Light-Holets, Vaibhav Daramwar, David A. Brush
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Publication number: 20190178130Abstract: A dosing module includes an inlet manifold, an outlet manifold, a first branch, and a second branch. The inlet manifold is configured to selectively receive reductant from a pump. The outlet manifold is configured to selectively provide the reductant to a nozzle. The first branch is coupled to the inlet manifold and the outlet manifold. The first branch is configured to selectively provide the reductant from the inlet manifold to the outlet manifold. The first branch includes a first flow restrictor configured to restrict the reductant as the reductant is provided to the outlet manifold. The second branch is coupled to the inlet manifold and the outlet manifold. The second branch is configured to selectively provide the reductant from the inlet manifold to the outlet manifold separately from the first branch. The second branch includes a second flow restrictor that is configured to restrict the reductant.Type: ApplicationFiled: December 11, 2017Publication date: June 13, 2019Applicant: Cummins Emission Solutions Inc.Inventors: Taren DeHart, Vaibhav J. Lawand, Stephen M. Holl, Paul Douglas Free, Nassim Khaled, Colin L. Norris
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Publication number: 20180363527Abstract: The present disclosure provides a method of treating a diesel exhaust system that includes heating a reagent to a temperature such that at least a portion of the reagent is heated to a gaseous phase, injecting the reagent into a diesel exhaust stream upstream of a catalyst, and reacting the diesel exhaust with the heated reagent over the catalyst to convert NOx into N2 and H2O. The heating modulates a mass flow rate of the reagent by converting a state of matter of the reagent at least partially to the gaseous phase prior to or after being injected, and the heated reagent in the gaseous form reduces deposit formations within the diesel exhaust system.Type: ApplicationFiled: June 15, 2018Publication date: December 20, 2018Applicant: Watlow Electric Manufacturing CompanyInventors: Mark Denis Everly, Paul Douglas Free, Jeffrey R. Diestelmeier, Andrew D. Selvy
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Patent number: 10119496Abstract: A combustion engine and a method of operating the combustion engine are disclosed. The method comprises supplying a charge gas to the combustion chamber through an intake port; discharging a cryogenic fuel in a liquid state from a fuel injector in fluid communication with the combustion chamber; closing an intake valve to close the combustion chamber; and actuating a piston during a compression cycle to compress the charge gas and the cryogenic fuel. At least a portion of the cryogenic fuel evaporates in the closed combustion chamber.Type: GrantFiled: April 14, 2015Date of Patent: November 6, 2018Assignee: CUMMINS INC.Inventors: Lester L. Peters, Paul Douglas Free, John Robert Pendray
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Patent number: 9915191Abstract: An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.Type: GrantFiled: February 9, 2017Date of Patent: March 13, 2018Assignee: CUMMINS INC.Inventors: Paul Douglas Free, Jason Robert Griffin, Alex Edward Priestley, Stephen Sunadh Gidla, Peter Vinson Woon, Joseph Scot Roederer
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Publication number: 20170152791Abstract: An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.Type: ApplicationFiled: February 9, 2017Publication date: June 1, 2017Inventors: Paul Douglas Free, Jason Robert Griffin, Alex Edward Priestley, Stephen Sunadh Gidla, Peter Vinson Woon, Joseph Scot Roederer
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Publication number: 20170152781Abstract: A system and method are disclosed for improving the performance of an aftertreatment system by elevating its temperature above an activation temperature. According to at least one aspect of the present disclosure, the method includes injecting a quantity of a fuel into certain fueled cylinders of a plurality of combustion cylinders of an internal combustion engine, the plurality of combustion cylinders further including non-fueled cylinders. Exhaust from the fueled cylinders is directed through the aftertreatment system while uncombusted gas from the non-fueled cylinders is directed away from the aftertreatment system. In certain embodiments, the uncombusted gas may be directed into an intake manifold in fluid communication with the plurality of combustion cylinders through an orifice. The system includes an engine having exhaust valves to control flow of the exhaust and uncombusted gas and a controller configured to perform the operations of the method.Type: ApplicationFiled: February 14, 2017Publication date: June 1, 2017Inventors: Paul Douglas Free, Jennifer Kay Light- Holets, Vaibhav Daramwar, David A. Brush
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Patent number: 9650925Abstract: A system and method of providing supplementary oil flow to an oil circuit of an internal combustion engine is described. The primary oil supply is from a mechanical oil pump. The supplementary oil supply is provided using a control system, one or more sensors, and an electrical oil pump. The system is beneficial in circumstances where the mechanical oil pump provides insufficient oil flow, including during engine shutdown.Type: GrantFiled: July 25, 2012Date of Patent: May 16, 2017Assignee: Cummins Intellectual Property, Inc.Inventors: Paul Douglas Free, Kavana Rao, Michael F. Mattern
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Patent number: 9644590Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.Type: GrantFiled: January 31, 2014Date of Patent: May 9, 2017Assignee: CUMMINS INC.Inventors: Paul Peavler, Donald J. Benson, Paul Douglas Free, Jeffrey C. Huang, Eric Benham, C. Edward Morris, Jr.
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Patent number: 9605630Abstract: An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.Type: GrantFiled: September 18, 2014Date of Patent: March 28, 2017Assignee: CUMMINS INC.Inventors: Paul Douglas Free, Jason Robert Griffin, Alex Edward Priestley, Stephen Sunadh Gidla, Peter Vinson Woon, Joseph Scot Roederer
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Publication number: 20150292441Abstract: A combustion engine and a method of operating the combustion engine are disclosed. The method comprises supplying a charge gas to the combustion chamber through an intake port; discharging a cryogenic fuel in a liquid state from a fuel injector in fluid communication with the combustion chamber; closing an intake valve to close the combustion chamber; and actuating a piston during a compression cycle to compress the charge gas and the cryogenic fuel. At least a portion of the cryogenic fuel evaporates in the closed combustion chamber.Type: ApplicationFiled: April 14, 2015Publication date: October 15, 2015Inventors: Lester L. Peters, Paul Douglas Free, John Robert Pendray
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Publication number: 20150219054Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.Type: ApplicationFiled: January 31, 2014Publication date: August 6, 2015Applicant: Cummins IncInventors: Paul Peavler, Donald J. Benson, Paul Douglas Free, Jeffrey C. Huang, Eric Benham, C. Edward Morris, JR.
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Publication number: 20150000627Abstract: An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.Type: ApplicationFiled: September 18, 2014Publication date: January 1, 2015Inventors: Paul Douglas Free, Jason Robert Griffin, Alex Edward Priestley, Stephen Sunadh Gidla, Peter Vinson Woon, Joseph Scot Roederer
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Patent number: 8844492Abstract: An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.Type: GrantFiled: March 1, 2013Date of Patent: September 30, 2014Assignee: Cummins Inc.Inventors: Paul Douglas Free, Jason Robert Griffin, Alex Edward Priestley, Stephen Sunadh Gidla, Peter Vinson Woon, Joseph Scot Roederer
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Publication number: 20140245983Abstract: An intake manifold is provided that controls swirl on entry to a combustion chamber. Each intake manifold includes a fin or rib portion positioned to reduce or eliminate swirl induced by the configuration of the intake manifold, particularly when used in a large engine having a left bank and a right bank of combustion chambers. By controlling swirl induced by the intake manifold, swirl consistency is improved between engine cylinders and between the left bank and the right bank, improving the consistency of power output and reducing emissions, particularly particulate emissions, also called smoke.Type: ApplicationFiled: March 1, 2013Publication date: September 4, 2014Applicant: CUMMINS INC.Inventors: Paul Douglas FREE, Jason Robert GRIFFIN, Alex Edward PRIESTLEY, Stephen Sunadh GIDLA, Peter Vinson WOON, Joseph Scot ROEDERER
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Publication number: 20140032085Abstract: A system and method of providing supplementary oil flow to an oil circuit of an internal combustion engine is described. The primary oil supply is from a mechanical oil pump. The supplementary oil supply is provided using a control system, one or more sensors, and an electrical oil pump. The system is beneficial in circumstances where the mechanical oil pump provides insufficient oil flow, including during engine shutdown.Type: ApplicationFiled: July 25, 2012Publication date: January 30, 2014Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.Inventors: Paul Douglas FREE, Kavana RAO, Michael F. MATTERN