Patents by Inventor John Heichelbech
John Heichelbech 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: 10087804Abstract: Urea solution pumps having leakage bypass flowpaths and methods of operating the same are disclosed. Certain embodiments are pump apparatuses including an inlet passage in flow communication with a source of urea solution and a pump chamber, an outlet passage in flow communication with the pump chamber and an exhaust after treatment system, a diaphragm facing the pump chamber and coupled with an actuator, a first housing member coupled with a second housing member form a seal around the pumping chamber, a leak collection chamber surrounding the seal, and a return passage in flow communication with the leak collection chamber and the inlet passage. Urea solution that leaks from the pump chamber past the seal is received by the leak collection chamber and flows through the return passage to the pump inlet passage.Type: GrantFiled: August 22, 2012Date of Patent: October 2, 2018Assignee: Cummins Emission Solutions, Inc.Inventors: George Muntean, Nachiket Pawar, Kundana Inala, Steve Holl, Stephanie Apewokin, Cynthia Gosselin, Andrew Myer, Jim F. Burke, John Heichelbech
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Patent number: 9938875Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet and provide a combined flow of pressurized gas and urea to an outlet, flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position, the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.Type: GrantFiled: July 19, 2016Date of Patent: April 10, 2018Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: Andrew Myer, Chetan Ponnathpur, John Heichelbech, George Muntean, Stephen Holl, James F. Burke, John Anthis, Joydeep Chakrabarti, Brandon Simmons, Niklas Schmidt, Yogesh V. Birari
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Patent number: 9856772Abstract: A reductant system for an aftertreatment system of an internal combustion engine is disclosed. The reductant system includes at least one reductant feed line and a reductant system component such as a dosing module. The feed line is connected to the dosing module with a fluid connector. The fluid connector includes a body made from a first material that has a low heat conductivity and an insert made from a second material that has a greater heat conductivity than that of the first material. The insert extends from the body of the fluid connector into a storage chamber of the dosing module, and conducts heat from heated reductant in the feed line to the reductant stored in the storage chamber.Type: GrantFiled: April 18, 2016Date of Patent: January 2, 2018Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventors: John Heichelbech, James F. Burke, John Anthis, Andrew Myer
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Publication number: 20160326929Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet and provide a combined flow of pressurized gas and urea to an outlet, flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position, the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.Type: ApplicationFiled: July 19, 2016Publication date: November 10, 2016Applicant: Cummins Emission Solutions, Inc.Inventors: Andrew Myer, Chetan Ponnathpur, John Heichelbech, George Muntean, Stephen Holl, James F. Burke, John Anthis, Joydeep Chakrabarti, Brandon Simmons, Niklas Schmidt, Yogesh V. Birari
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Patent number: 9470129Abstract: A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source. A control valve controls the flow of the heat exchange fluid in the heat exchange circuit so that at least one heat exchange cycle includes a circulation period that increases the temperature of the reductant in the doser and storage tank and a termination period where circulation is stopped until reductant temperature in the doser reaches a lower limit.Type: GrantFiled: January 16, 2015Date of Patent: October 18, 2016Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventors: Andrew Myer, John Heichelbech, Stephanie Apewokin, Stephen Holl, James F. Burke
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Patent number: 9422850Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet, and provide a combined flow of pressurized gas and urea to an outlet, a flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.Type: GrantFiled: August 22, 2012Date of Patent: August 23, 2016Assignee: Cummins Emission Solutions, Inc.Inventors: Andrew Myer, Chetan Ponnathpur, John Heichelbech, George Muntean, Stephen Holl, James F. Burke, John Anthis, Joydeep Chakrabarti, Brandon Simmons, Niklas Schmidt, Yogesh V. Birari
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Publication number: 20160230630Abstract: A reductant system for an aftertreatment system of an internal combustion engine is disclosed. The reductant system includes at least one reductant feed line and a reductant system component such as a dosing module. The feed line is connected to the dosing module with a fluid connector. The fluid connector includes a body made from a first material that has a low heat conductivity and an insert made from a second material that has a greater heat conductivity than that of the first material. The insert extends from the body of the fluid connector into a storage chamber of the dosing module, and conducts heat from heated reductant in the feed line to the reductant stored in the storage chamber.Type: ApplicationFiled: April 18, 2016Publication date: August 11, 2016Applicant: Cummins Emission Solutions Inc.Inventors: John Heichelbech, James F. Burke, John Anthis, Andrew Myer
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Patent number: 9341295Abstract: A reductant system for an aftertreatment system of an internal combustion engine is disclosed. The reductant system includes at least one reductant feed line and a reductant system component such as a dosing module. The feed line is connected to the dosing module with a fluid connector. The fluid connector includes a body made from a first material that has a low heat conductivity and an insert made from a second material that has a greater heat conductivity than that of the first material. The insert extends from the body of the fluid connector into a storage chamber of the dosing module, and conducts heat from heated reductant in the feed line to the reductant stored in the storage chamber.Type: GrantFiled: March 27, 2013Date of Patent: May 17, 2016Assignee: Cummins Emission Solutions, Inc.Inventors: John Heichelbech, Jim F. Burke, John Anthis, Andrew Myer
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Patent number: 9255512Abstract: Urea injection system wash cycle methods and systems are disclosed. An exemplary wash cycle method includes operating a urea injection system to provide urea solution to a first inlet of a blending chamber, provide pressurized gas to a second inlet of the blending chamber, and output a combined flow of pressurized gas and urea solution from the blending chamber. A pressure of the combined flow at a location downstream from the first inlet and the second inlet is monitored. A wash cycle is performed based upon the monitored pressure wherein the flow of pressurized gas is turned off and urea solution is provided to the blending chamber. An exemplary system includes a controller configured to control a urea injection system to perform a wash cycle in accordance with the exemplary method.Type: GrantFiled: August 22, 2012Date of Patent: February 9, 2016Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: Wei Huang, Yongquan Chai, Andrew Myer, James F. Burke, Joydeep Chakrabarti, Mugdha Naik, John Anthis, John Heichelbech, Guinness Shrestha
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Patent number: 9089791Abstract: An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a reductant tank. A filter module positioned in the reductant tank filters reductant before it is conveyed to the reductant pump to remove impurities. In order to reduce gas flow to the pump, the filter module may have an outlet port leading to the reductant pump and a venting port positioned above the outlet port such that gas bubbles float to the venting port prior to entry of the reductant into the outlet port. The filter module may be secured to a tank level sensor assembly, and may vent the gas to a gas reservoir above the reductant in the reductant tank. Such a filtration system may operate independently of any return line that conveys reductant back to the reductant tank.Type: GrantFiled: March 14, 2013Date of Patent: July 28, 2015Assignee: CUMMINS IP, INC.Inventors: Andrew Myer, John Heichelbech, George Muntean, Stephen Holl, Jim Burke, John Anthis
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Publication number: 20150128569Abstract: A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source. A control valve controls the flow of the heat exchange fluid in the heat exchange circuit so that at least one heat exchange cycle includes a circulation period that increases the temperature of the reductant in the doser and storage tank and a termination period where circulation is stopped until reductant temperature in the doser reaches a lower limit.Type: ApplicationFiled: January 16, 2015Publication date: May 14, 2015Applicant: Cummins Emission Solutions, Inc.Inventors: Andrew Myer, John Heichelbech, Stephanie Apewokin, Stephen Holl, James F. Burke
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Patent number: 8959903Abstract: A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source. A control valve controls the flow of the heat exchange fluid in the heat exchange circuit so that at least one heat exchange cycle includes a circulation period that increases the temperature of the reductant in the doser and storage tank and a termination period where circulation is stopped until reductant temperature in the doser reaches a lower limit.Type: GrantFiled: March 1, 2013Date of Patent: February 24, 2015Assignee: Cummins Emission Solutions Inc.Inventors: Andrew Myer, John Heichelbech, Stephanie Apewokin, Stephen Holl, James F. Burke
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Publication number: 20150030466Abstract: Urea solution pumps having leakage bypass flowpaths and methods of operating the same are disclosed. Certain embodiments are pump apparatuses including an inlet passage in flow communication with a source of urea solution and a pump chamber, an outlet passage in flow communication with the pump chamber and an exhaust after treatment system, a diaphragm facing the pump chamber and coupled with an actuator, a first housing member coupled with a second housing member form a seal around the pumping chamber, a leak collection chamber surrounding the seal, and a return passage in flow communication with the leak collection chamber and the inlet passage. Urea solution that leaks from the pump chamber past the seal is received by the leak collection chamber and flows through the return passage to the pump inlet passage.Type: ApplicationFiled: August 22, 2012Publication date: January 29, 2015Inventors: George Muntean, Nachiket Pawar, Kundana Inala, Steve Holl, Stephanie Apewokin, Cynthia Gosselin, Andrew Myer, Jim F. Burke, John Heichelbech
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Publication number: 20150027556Abstract: Urea injection system wash cycle methods and systems are disclosed. An exemplary wash cycle method includes operating a urea injection system to provide urea solution to a first inlet of a blending chamber, provide pressurized gas to a second inlet of the blending chamber, and output a combined flow of pressurized gas and urea solution from the blending chamber. A pressure of the combined flow at a location downstream from the first inlet and the second inlet is monitored. A wash cycle is performed based upon the monitored pressure wherein the flow of pressurized gas is turned off and urea solution is provided to the blending chamber. An exemplary system includes a controller configured to control a urea injection system to perform a wash cycle in accordance with the exemplary method.Type: ApplicationFiled: August 22, 2012Publication date: January 29, 2015Applicant: Cummins Emission Solutions, Inc.Inventors: Wei Huang, Yongquan Chai, Andrew Myer, James F. Burke, Joydeep Chakrabarti, Mugdha Naik, John Anthis, John Heichelbech, Guinnes Shrestha
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Publication number: 20150027553Abstract: Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet, and provide a combined flow of pressurized gas and urea to an outlet, a flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.Type: ApplicationFiled: August 22, 2012Publication date: January 29, 2015Inventors: Andrew Myer, Chetan Ponnathpur, John Heichelbech, George Muntean, Stephen Holl, James F. Burke, John Anthis, Joydeep Chakrabarti, Brandon Simmons
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Patent number: 8888017Abstract: A system includes a cylindrical blend chamber having two inlets and one outlet. The outlet is fluidly coupled to a transfer line, and a nozzle is positioned downstream of the transfer line. The nozzle is fluidly coupled to an exhaust stream of an internal combustion engine. The system further includes a first inlet fluidly coupled to a diesel exhaust fluid (DEF) stream, and a second inlet fluidly coupled to an air stream. The DEF stream and the air stream intersect at a divergent angle.Type: GrantFiled: September 23, 2011Date of Patent: November 18, 2014Assignee: Cummins Inc.Inventors: Chetan Ponnathpur, Stephanie L. Apewokin, Steve Holl, Jim F. Burke, John Heichelbech, Andrew Myer, Melissa A. Zaczek, Yongquan Chai, Eric Burmeister, Nate Garrett
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Publication number: 20140290214Abstract: A reductant system for an aftertreatment system of an internal combustion engine is disclosed. The reductant system includes at least one reductant feed line and a reductant system component such as a dosing module. The feed line is connected to the dosing module with a fluid connector. The fluid connector includes a body made from a first material that has a low heat conductivity and an insert made from a second material that has a greater heat conductivity than that of the first material. The insert extends from the body of the fluid connector into a storage chamber of the dosing module, and conducts heat from heated reductant in the feed line to the reductant stored in the storage chamber.Type: ApplicationFiled: March 27, 2013Publication date: October 2, 2014Applicant: Cummins Emission Solutions, Inc.Inventors: John Heichelbech, Jim F. Burke, John Anthis, Andrew Myer
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Publication number: 20140260206Abstract: An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a reductant tank. A filter module positioned in the reductant tank filters reductant before it is conveyed to the reductant pump to remove impurities. In order to reduce gas flow to the pump, the filter module may have an outlet port leading to the reductant pump and a venting port positioned above the outlet port such that gas bubbles float to the venting port prior to entry of the reductant into the outlet port. The filter module may be secured to a tank level sensor assembly, and may vent the gas to a gas reservoir above the reductant in the reductant tank. Such a filtration system may operate independently of any return line that conveys reductant back to the reductant tank.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: CUMMINS IP, INC.Inventors: Andrew Myer, John Heichelbech, George Muntean, Steve Holl, Jim Burke, John Anthis
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Publication number: 20140250873Abstract: A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source. A control valve controls the flow of the heat exchange fluid in the heat exchange circuit so that at least one heat exchange cycle includes a circulation period that increases the temperature of the reductant in the doser and storage tank and a termination period where circulation is stopped until reductant temperature in the doser reaches a lower limit.Type: ApplicationFiled: March 1, 2013Publication date: September 11, 2014Applicant: Cummins Emission Solutions Inc.Inventors: Andrew Myer, John Heichelbech, Stephanie Apewokin, Stephen Holl, James F. Burke
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Publication number: 20120160934Abstract: A system includes a cylindrical blend chamber having two inlets and one outlet. The outlet is fluidly coupled to a transfer line, and a nozzle is positioned downstream of the transfer line. The nozzle is fluidly coupled to an exhaust stream of an internal combustion engine. The system further includes a first inlet fluidly coupled to a diesel exhaust fluid (DEF) stream, and a second inlet fluidly coupled to an air stream. The DEF stream and the air stream intersect at a divergent angle.Type: ApplicationFiled: September 23, 2011Publication date: June 28, 2012Inventors: Chetan Ponnathpur, Stephanie L. Apewokin, Steve Holl, Jim F. Burke, John Heichelbech, Andrew Myer, Melissa A. Zaczek, Yongquan Chai, Eric Burmester, Nate Garrett