Patents by Inventor Alison A. Chambers

Alison A. Chambers 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).

  • Pre-injection exhaust flow modifier
    Patent number: 8677738
    Abstract: An exhaust gas treatment system for reducing emissions from an engine includes an exhaust conduit adapted to supply an exhaust stream from the engine to an exhaust treatment device. The conduit includes an aperture. An injector injects a reagent through the aperture and into the exhaust stream. A flow modifier is positioned within the exhaust conduit upstream of the injector. The flow modifier includes a diverter for increasing the velocity of the exhaust gas at a predetermined location within the conduit relative to the injected reagent.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: March 25, 2014
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Ryan A. Floyd, Stephen M. Thomas, Joseph G. Ralph, James J. Reynolds, III, Jeremy Popovich, Manoj K. Sampath, Michael Wenk, Alison Chambers
  • Pre-Injection Exhaust Flow Modifier
    Publication number: 20130061577
    Abstract: An exhaust gas treatment system for reducing emissions from an engine includes an exhaust conduit adapted to supply an exhaust stream from the engine to an exhaust treatment device. The conduit includes an aperture. An injector injects a reagent through the aperture and into the exhaust stream. A flow modifier is positioned within the exhaust conduit upstream of the injector. The flow modifier includes a diverter for increasing the velocity of the exhaust gas at a predetermined location within the conduit relative to the injected reagent.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 14, 2013
    Inventors: Ryan A. Floyd, Stephen M. Thomas, Joseph G. Ralph, James J. Reynolds, III, Jeremy Popovich, Manoj K. Sampath, Michael Wenk, Alison Chambers
  • Method and apparatus for injecting atomized fluids
    Patent number: 8047452
    Abstract: Methods and apparatus for injecting reagent, such as an aqueous urea solution, into an exhaust stream in order to reduce emissions from an engine exhaust. The present teachings can use a whirl plate having a plurality of whirl slots surrounding an exit orifice of an injector, which produce a high velocity rotating flow in the whirl chamber. When the rotating flow of reagent is passed through the exit orifice into an exhaust stream, atomization occurs from a combination of centrifugal force and shearing of the reagent by air as it jets into the exhaust stream.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: November 1, 2011
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Scott M. Martin, Stephen M. Thomas, Alison A. Chambers, Theodore J. Tarabulski, P. Robert Santangeli, R. Gifford Broderick
  • METHOD AND APPARATUS FOR INJECTING ATOMIZED FLUIDS
    Publication number: 20090179087
    Abstract: Methods and apparatus for injecting reagent, such as an aqueous urea solution, into an exhaust stream in order to reduce emissions from an engine exhaust. The present teachings can use a whirl plate having a plurality of whirl slots surrounding an exit orifice of an injector, which produce a high velocity rotating flow in the whirl chamber. When the rotating flow of reagent is passed through the exit orifice into an exhaust stream, atomization occurs from a combination of centrifugal force and shearing of the reagent by air as it jets into the exhaust stream.
    Type: Application
    Filed: November 21, 2008
    Publication date: July 16, 2009
    Inventors: Scott M. Martin, Stephen M. Thomas, Alison A. Chambers, Theodore J. Tarabulski, P. Robert Santangeli, R. Gifford Broderick