Patents by Inventor Kasser A. Jaffri

Kasser A. Jaffri 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).

  • Lean kick catalyst monitoring system
    Patent number: 8661787
    Abstract: A method and system for monitoring a three-way catalyst cooled by a coolant and treating internal combustion engine exhaust by oxidizing HC and CO and reducing NOx is provided to prevent false-fail monitoring. An initial lean kick excursion of fuel-air ratio Phi is provided prior to the first reducing step or interval of the first cycle.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: March 4, 2014
    Assignee: Brunswick Corporation
    Inventors: Andrew J. Przybyl, William R. Robertson, Mark A. Frank, Kasser A. Jaffri, Ronald L. Hall
  • Particulate matter filter assembly with a flow device
    Patent number: 8043394
    Abstract: A particulate matter (PM) filter assembly includes a PM filter that filters PM from an exhaust stream and that includes an entry face facing a first direction of flow of the exhaust stream, and a swirl element disposed in the exhaust stream and that includes a blade that directs a portion of the exhaust stream in a second direction of flow that is different than the first direction of flow. The blade directs the portion of the exhaust stream to distribute the exhaust stream over a frontal area of the entry face of the PM filter. A related method of filtering particulate matter from an exhaust stream is also provided.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: October 25, 2011
    Inventors: Rahul Mital, David B. Brown, Jianwen Li, Michael Christopher Luckham, Kevin B. Fuqua, Kasser A. Jaffri, Linda Garcia
  • Mixing apparatus for an exhaust after-treatment system
    Patent number: 7908845
    Abstract: A mixing apparatus mountable within a generally cylindrical passage defined by an exhaust gas conduit of an exhaust gas after-treatment system is provided. The passage includes an outer region and an inner region operable to convey an exhaust stream and a liquid stream, such as a urea stream. The mixing apparatus includes a retainer ring operable to retain the mixing apparatus within the passage. A first plurality of fins extends from the retainer ring and is operable to impart a rotational velocity component in a first direction to the exhaust stream and urea stream in the outer region of the passage. A second plurality of fins extends from the retainer ring and is operable to impart a rotational velocity component in a second direction, opposite the first direction, to the exhaust stream and urea stream in the inner region of the passage.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: March 22, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: David B. Brown, Rahul Mital, Kasser A. Jaffri, Kevin B. Fuqua
  • PARTICULATE MATTER FILTER ASSEMBLY WITH A FLOW DEVICE
    Publication number: 20090235653
    Abstract: A particulate matter (PM) filter assembly includes a PM filter that filters PM from an exhaust stream and that includes an entry face facing a first direction of flow of the exhaust stream, and a swirl element disposed in the exhaust stream and that includes a blade that directs a portion of the exhaust stream in a second direction of flow that is different than the first direction of flow. The blade directs the portion of the exhaust stream to distribute the exhaust stream over a frontal area of the entry face of the PM filter. A related method of filtering particulate matter from an exhaust stream is also provided.
    Type: Application
    Filed: October 15, 2008
    Publication date: September 24, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC
    Inventors: Rahul Mital, David B. Brown, Jianwen Li, Michael Christopher Luckham, Kevin B. Fuqua, Kasser A. Jaffri, Linda Garcia
  • Mixing Apparatus for an Exhaust After-Treatment System
    Publication number: 20080250776
    Abstract: A mixing apparatus mountable within a generally cylindrical passage defined by an exhaust gas conduit of an exhaust gas after-treatment system is provided. The passage includes an outer region and an inner region operable to convey an exhaust stream and a liquid stream, such as a urea stream. The mixing apparatus includes a retainer ring operable to retain the mixing apparatus within the passage. A first plurality of fins extends from the retainer ring and is operable to impart a rotational velocity component in a first direction to the exhaust stream and urea stream in the outer region of the passage. A second plurality of fins extends from the retainer ring and is operable to impart a rotational velocity component in a second direction, opposite the first direction, to the exhaust stream and urea stream in the inner region of the passage.
    Type: Application
    Filed: April 16, 2007
    Publication date: October 16, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: David B. Brown, Rahul Mital, Kasser A. Jaffri, Kevin B. Fuqua