Patents by Inventor Mugdha Naik
Mugdha Naik 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: 10094259Abstract: 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: September 9, 2016Date of Patent: October 9, 2018Assignee: Cummins Emission Solutions Inc.Inventors: Mugdha Naik, Yongquan Chai, Shu Zhang, Xin Jin, Srivardhan Chandrapati, James Houghtell, Deepu J. Chandy
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Patent number: 9689291Abstract: According to one embodiment, a diesel exhaust fluid purging system includes a metering valve with a supply port and a delivery port. The purging system also includes a pump assembly that is fluidly connected to the supply port of the metering valve. The pump assembly includes a pump and a single supply line that is fluidly connectable with a diesel exhaust fluid source. The purging system further includes an injection assembly that is fluidly connected to the delivery port of the metering valve. The injection assembly includes an air supply line that is fluidly connectable with an air supply source. Additionally, the purging system includes a controller in electrical communication with the metering valve, the pump assembly, and the injection assembly. The controller is configured to purge the pump assembly of residual diesel exhaust fluid using air from the air supply line.Type: GrantFiled: March 14, 2014Date of Patent: June 27, 2017Assignee: Cummins IP, Inc.Inventors: Shu Zhang, Srivardhan Chandrapati, Mugdha Naik, Srinivasa V. Rajagopalan, Wei Huang, George Muntean, Andrew Myer
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Publication number: 20160376964Abstract: 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: September 9, 2016Publication date: December 29, 2016Applicant: Cummins Emission Solutions Inc.Inventors: Mugdha NAIK, Yongquan CHAI, Shu ZHANG, Xin JIN, Srivardhan CHANDRAPATI, James HOUGHTELL, Deepu J. CHANDY
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Patent number: 9458746Abstract: 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: October 4, 2016Assignee: CUMMINS EMISSION SOLUTIONS INC.Inventors: Mugdha Naik, Yongquan Chai, Shu Zhang, Xin Jin, Srivardhan Chandrapati, James Houghtell, Deepu J. Chandy
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Patent number: 9441518Abstract: An example system includes a diaphragm pump having a suction port and a discharge port, a urea suction line fluidly coupling a urea supply to the suction port, and a urea discharge line fluidly coupled to the discharge port. A recirculation line fluidly couples the urea discharge line to the urea suction line, and has a flow regulator operationally coupled thereto. A controller is configured to interpret a prime loss condition of the diaphragm pump, and to provide a flow regulator command in response to the prime loss condition.Type: GrantFiled: August 8, 2014Date of Patent: September 13, 2016Assignee: Cummins Emission Solutions, Inc.Inventors: Srivardhan Chandrapati, Andrew Morgan Myer, Mugdha Naik, Shu Zhang, Xin Jin, Srinivasa Varadan Rajagopalan, John K. Heichelbech, Stephen M. Holl
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Publication number: 20160040575Abstract: According to one embodiment, a diesel exhaust fluid purging system includes a metering valve with a supply port and a delivery port. The purging system also includes a pump assembly that is fluidly connected to the supply port of the metering valve. The pump assembly includes a pump and a single supply line that is fluidly connectable with a diesel exhaust fluid source. The purging system further includes an injection assembly that is fluidly connected to the delivery port of the metering valve. The injection assembly includes an air supply line that is fluidly connectable with an air supply source. Additionally, the purging system includes a controller in electrical communication with the metering valve, the pump assembly, and the injection assembly. The controller is configured to purge the pump assembly of residual diesel exhaust fluid using air from the air supply line.Type: ApplicationFiled: March 14, 2014Publication date: February 11, 2016Applicant: Cummins IP, Inc.Inventors: Shu ZHANG, Srivardhan Chandrapati, Mugdha Naik, Srinivasa V. Rajagopalan, Wei Huang, George Muntean, 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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Publication number: 20150047727Abstract: An example system includes a diaphragm pump having a suction port and a discharge port, a urea suction line fluidly coupling a urea supply to the suction port, and a urea discharge line fluidly coupled to the discharge port. A recirculation line fluidly couples the urea discharge line to the urea suction line, and has a flow regulator operationally coupled thereto. A controller is configured to interpret a prime loss condition of the diaphragm pump, and to provide a flow regulator command in response to the prime loss condition.Type: ApplicationFiled: August 8, 2014Publication date: February 19, 2015Applicant: Cummins Emission Solutions, Inc.Inventors: Srivardhan CHANDRAPATI, Andrew Morgan Myer, Mugdha Naik, Shu Zhang, Xin Jin, Srinivasa Varadan Rajagopalan, John K. HEICHELBECH, Stephen M. Holl
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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: 20140245722Abstract: 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 4, 2014Applicant: Cummins Emission Solutions Inc,Inventors: Mugdha Naik, Yongquan Chai, Shu Zhang, Xin Jin, Srivardhan Chandrapati, James Houghtell, Deepu J. Chandy