Patents by Inventor Stephanie L. Apewokin

Stephanie L. Apewokin 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 nozzle cooling of diesel exhaust fluid injection systems
    Patent number: 9719392
    Abstract: A system is provided for delivery of diesel exhaust fluid or other reductant to an injector for release into an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally shields the diesel exhaust fluid from the exhaust gas temperatures. A diesel exhaust fluid delivery procedure is also disclosed for nozzle cooling prior to operation of the injector for emissions reduction.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 1, 2017
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Aalok Trivedi, Andrew Myer, Stephanie L. Apewokin, Samuel Johnson, Srivardhan Chandrapati, George L. Muntean, Joshua D. Henry, John Anthis, Omkar Tendolkar
  • SYSTEMS AND TECHNIQUES FOR NOZZLE COOLING OF DIESEL EXHAUST FLUID INJECTION SYSTEMS
    Publication number: 20170175608
    Abstract: A system is provided for delivery of diesel exhaust fluid or other reductant to an injector for release into an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally shields the diesel exhaust fluid from the exhaust gas temperatures. A diesel exhaust fluid delivery procedure is also disclosed for nozzle cooling prior to operation of the injector for emissions reduction.
    Type: Application
    Filed: March 2, 2017
    Publication date: June 22, 2017
    Applicant: Cummins Emission Solutions Inc.
    Inventors: Aalok TRIVEDI, Andrew MYER, Stephanie L. APEWOKIN, Samuel JOHNSON, Srivardhan CHANDRAPATI, George L. MUNTEAN, Joshua D. HENRY, John ANTHIS, Omkar TENDOLKAR
  • Systems and techniques for nozzle cooling of diesel exhaust fluid injection systems
    Patent number: 9617889
    Abstract: A system is provided for delivery of diesel exhaust fluid or other reductant to an injector for release into an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally shields the diesel exhaust fluid from the exhaust gas temperatures. A diesel exhaust fluid delivery procedure is also disclosed for nozzle cooling prior to operation of the injector for emissions reduction.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: April 11, 2017
    Assignee: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: Aalok Trivedi, Andrew Myer, Stephanie L. Apewokin, Samuel Johnson, Srivardhan Chandrapati, George L. Muntean, Joshua D. Henry, John Anthis, Omkar Tendolkar
  • SYSTEMS AND TECHNIQUES FOR NOZZLE COOLING OF DIESEL EXHAUST FLUID INJECTION SYSTEMS
    Publication number: 20160084131
    Abstract: A system is provided for delivery of diesel exhaust fluid or other reductant to an injector for release into an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally shields the diesel exhaust fluid from the exhaust gas temperatures. A diesel exhaust fluid delivery procedure is also disclosed for nozzle cooling prior to operation of the injector for emissions reduction.
    Type: Application
    Filed: December 2, 2015
    Publication date: March 24, 2016
    Applicant: Cummins Emission Solutions Inc.
    Inventors: Aalok TRIVEDI, Andrew MYER, Stephanie L. APEWOKIN, Samuel JOHNSON, Srivardhan CHANDRAPATI, George L. MUNTEAN, Joshua D. HENRY, John ANTHIS, Omkar TENDOLKAR
  • Systems and techniques for nozzle cooling of diesel exhaust fluid injection systems
    Patent number: 9234445
    Abstract: A system is provided for delivery of diesel exhaust fluid or other reductant to an injector for release into an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally shields the diesel exhaust fluid from the exhaust gas temperatures. A diesel exhaust fluid delivery procedure is also disclosed for nozzle cooling prior to operation of the injector for emissions reduction.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: January 12, 2016
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Aalok Trivedi, Andrew Myer, Stephanie L. Apewokin, Samuel Johnson, Srivardhan Chandrapati, George L. Muntean, Joshua D. Henry, John Anthis, Omkar Tendolkar
  • SYSTEMS AND TECHNIQUES FOR NOZZLE COOLING OF DIESEL EXHAUST FLUID INJECTION SYSTEMS
    Publication number: 20140363357
    Abstract: A system is provided for delivery of diesel exhaust fluid or other reductant to an injector for release into an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally shields the diesel exhaust fluid from the exhaust gas temperatures. A diesel exhaust fluid delivery procedure is also disclosed for nozzle cooling prior to operation of the injector for emissions reduction.
    Type: Application
    Filed: June 6, 2013
    Publication date: December 11, 2014
    Applicant: Cummins Emission Solutions Inc.
    Inventors: Aalok Trivedi, Andrew Myer, Stephanie L. Apewokin, Samuel Johnson, Srivardhan Chandrapati, George G. Muntean, Joshua D. Henry, John Anthis, Omkar Tendolkar
  • System, method, and apparatus for delivering highly atomized diesel exhaust fluid to an exhaust aftertreatment system
    Patent number: 8888017
    Abstract: 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: Grant
    Filed: September 23, 2011
    Date of Patent: November 18, 2014
    Assignee: 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
  • SYSTEM, METHOD, AND APPARATUS FOR DELIVERING HIGHLY ATOMIZED DIESEL EXHAUST FLUID TO AN EXHAUST AFTERTREATMENT SYSTEM
    Publication number: 20120160934
    Abstract: 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: Application
    Filed: September 23, 2011
    Publication date: June 28, 2012
    Inventors: Chetan Ponnathpur, Stephanie L. Apewokin, Steve Holl, Jim F. Burke, John Heichelbech, Andrew Myer, Melissa A. Zaczek, Yongquan Chai, Eric Burmester, Nate Garrett