Patents by Inventor Deepu J. Chandy

Deepu J. Chandy 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).

  • Systems and techniques for heating urea injection systems
    Patent number: 10094259
    Abstract: 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: Grant
    Filed: September 9, 2016
    Date of Patent: October 9, 2018
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Mugdha Naik, Yongquan Chai, Shu Zhang, Xin Jin, Srivardhan Chandrapati, James Houghtell, Deepu J. Chandy
  • Systems and techniques for heating urea injection systems
    Patent number: 9458746
    Abstract: 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: Grant
    Filed: March 1, 2013
    Date of Patent: October 4, 2016
    Assignee: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: Mugdha Naik, Yongquan Chai, Shu Zhang, Xin Jin, Srivardhan Chandrapati, James Houghtell, Deepu J. Chandy
  • SYSTEMS AND TECHNIQUES FOR HEATING UREA INJECTION SYSTEMS
    Publication number: 20140245722
    Abstract: 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: Application
    Filed: March 1, 2013
    Publication date: September 4, 2014
    Applicant: Cummins Emission Solutions Inc,
    Inventors: Mugdha Naik, Yongquan Chai, Shu Zhang, Xin Jin, Srivardhan Chandrapati, James Houghtell, Deepu J. Chandy