Patents by Inventor Julie Marie Faas

Julie Marie Faas 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).

  • System and method for ammonia production
    Patent number: 7767181
    Abstract: A method of ammonia production for a selective catalytic reduction system includes producing a first exhaust flow and a second exhaust flow. The first exhaust flow has a higher NOx concentration than the second exhaust flow. The method also includes directing a portion of the second exhaust flow to a reformer. The method further includes combining the portion of the second exhaust flow directed to the reformer with the first exhaust flow upstream of an ammonia-producing catalyst.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: August 3, 2010
    Assignee: Caterpillar Inc
    Inventors: Ronald Silver, Julie Marie Faas, Paul Worn Park, Christie Susan Ragle
  • Dual path exhaust emission control system
    Patent number: 7673446
    Abstract: An exhaust emission control system for an internal combustion engine is disclosed. The exhaust emission control system has a first passageway and a second passageway disposed to receive exhaust in parallel. The exhaust emission control system also has a valve arrangement configured to regulate the flow of exhaust to the first and second passageways, and at least one sensor configured to sense a parameter indicative of a constituent of the exhaust. The at least one sensor generates a signal corresponding to the sensed parameter. The exhaust emission control system also has a controller in communication with the valve and the at least one sensor. The controller is configured to affect operation of the valve in response to the signal.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: March 9, 2010
    Assignee: Caterpillar Inc.
    Inventors: Svetlana Mikhailovna Zemskova, Julie Marie Faas, Christie Susan Ragle, Matthew Owen Stefanick, Ronald Graham Silver
  • Dual path exhaust emission control system
    Publication number: 20080178579
    Abstract: An exhaust emission control system for an internal combustion engine is disclosed. The exhaust emission control system has a first passageway and a second passageway disposed to receive exhaust in parallel. The exhaust emission control system also has a valve arrangement configured to regulate the flow of exhaust to the first and second passageways, and at least one sensor configured to sense a parameter indicative of a constituent of the exhaust. The at least one sensor generates a signal corresponding to the sensed parameter. The exhaust emission control system also has a controller in communication with the valve and the at least one sensor. The controller is configured to affect operation of the valve in response to the signal.
    Type: Application
    Filed: January 29, 2007
    Publication date: July 31, 2008
    Inventors: Svetlana Mikhailovna Zemskova, Julie Marie Faas, Christie Susan Ragle, Matthew Owen Stefanick, Ronald Graham Silver
  • System and method for ammonia production
    Publication number: 20080003163
    Abstract: A method of ammonia production for a selective catalytic reduction system includes producing a first exhaust flow and a second exhaust flow. The first exhaust flow has a higher NOx concentration than the second exhaust flow. The method also includes directing a portion of the second exhaust flow to a reformer. The method further includes combining the portion of the second exhaust flow directed to the reformer with the first exhaust flow upstream of an ammonia-producing catalyst.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 3, 2008
    Inventors: Ronald Silver, Julie Marie Faas, Paul Worn Park, Christie Susan Ragle