Patents by Inventor Joydeep Chakrabarti
Joydeep Chakrabarti 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).
-
Patent number: 10605138Abstract: An exemplary embodiment includes a blending chamber having a urea inlet, a blending chamber gas inlet, and a blending chamber outlet. A urea source provides a pressurized urea solution to the urea inlet at a urea injection pressure, and a pressurized gas source transmits pressurized gas to the blending chamber gas inlet via a passageway. The passageway is configured to decrease pressure of the pressurized gas transmitted along its length from a first pressure of gas received from the pressurized gas source to a second pressure of gas provided to the blending chamber gas inlet. The first pressure of gas received from the pressurized gas source is greater than the urea injection pressure and the second pressure of gas provided to the blending chamber gas inlet is less than the urea injection pressure.Type: GrantFiled: February 13, 2018Date of Patent: March 31, 2020Assignee: Cummins Emission Solutions Inc.Inventors: George L. Muntean, Steve Holl, Joydeep Chakrabarti, John Anthis, Joshua D. Henry, Samuel Johnson, Andrew Myer, John K. Heichelbech
-
Publication number: 20180171851Abstract: An exemplary embodiment includes a blending chamber having a urea inlet, a blending chamber gas inlet, and a blending chamber outlet. A urea source provides a pressurized urea solution to the urea inlet at a urea injection pressure, and a pressurized gas source transmits pressurized gas to the blending chamber gas inlet via a passageway. The passageway is configured to decrease pressure of the pressurized gas transmitted along its length from a first pressure of gas received from the pressurized gas source to a second pressure of gas provided to the blending chamber gas inlet. The first pressure of gas received from the pressurized gas source is greater than the urea injection pressure and the second pressure of gas provided to the blending chamber gas inlet is less than the urea infection pressure.Type: ApplicationFiled: February 13, 2018Publication date: June 21, 2018Applicant: Cummins Emission Solutions, Inc.Inventors: George L. Muntean, Steve Holl, Joydeep Chakrabarti, John Anthis, Joshua D. Henry, Samuel Johnson, Andrew Myer
-
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
-
Patent number: 9926822Abstract: An exemplary embodiment includes a blending chamber having a urea inlet, a blending chamber gas inlet, and a blending chamber outlet. A urea source provides a pressurized urea solution to the urea inlet at a urea injection pressure, and a pressurized gas source transmits pressurized gas to the blending chamber gas inlet via a passageway. The passageway is configured to decrease pressure of the pressurized gas transmitted along its length from a first pressure of gas received from the pressurized gas source to a second pressure of gas provided to the blending chamber gas inlet. The first pressure of gas received from the pressurized gas source is greater than the urea injection pressure and the second pressure of gas provided to the blending chamber gas inlet is less than the urea injection pressure.Type: GrantFiled: August 16, 2013Date of Patent: March 27, 2018Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: George L. Muntean, Steve Holl, Joydeep Chakrabarti, John Anthis, Joshua D. Henry, Samuel Johnson, Andrew Myer
-
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
-
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
-
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
-
Publication number: 20150049574Abstract: An exemplary embodiment includes a blending chamber having a urea inlet, a blending chamber gas inlet, and a blending chamber outlet. A urea source provides a pressurized urea solution to the urea inlet at a urea injection pressure, and a pressurized gas source transmits pressurized gas to the blending chamber gas inlet via a passageway. The passageway is configured to decrease pressure of the pressurized gas transmitted along its length from a first pressure of gas received from the pressurized gas source to a second pressure of gas provided to the blending chamber gas inlet. The first pressure of gas received from the pressurized gas source is greater than the urea injection pressure and the second pressure of gas provided to the blending chamber gas inlet is less than the urea injection pressure.Type: ApplicationFiled: August 16, 2013Publication date: February 19, 2015Inventors: George L. Muntean, Steve Holl, Joydeep Chakrabarti, John Anthis, Joshua D. Henry, Samuel Johnson, Andrew Myer
-
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
-
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
-
Patent number: RE48525Abstract: An exemplary embodiment includes a blending chamber having a urea inlet, a blending chamber gas inlet, and a blending chamber outlet. A urea source provides a pressurized urea solution to the urea inlet at a urea injection pressure, and a pressurized gas source transmits pressurized gas to the blending chamber gas inlet via a passageway. The passageway is configured to decrease pressure of the pressurized gas transmitted along its length from a first pressure of gas received from the pressurized gas source to a second pressure of gas provided to the blending chamber gas inlet. The first pressure of gas received from the pressurized gas source is greater than the urea injection pressure and the second pressure of gas provided to the blending chamber gas inlet is less than the urea injection pressure.Type: GrantFiled: September 18, 2019Date of Patent: April 20, 2021Assignee: Cummins Emission Solutions Inc.Inventors: George L. Muntean, Steve Holl, Joydeep Chakrabarti, John Anthis, Joshua D. Henry, Samuel Johnson, Andrew Myer, John K. Heichelbech