Patents by Inventor David Townson

David Townson 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).

  • Methods and systems for an exhaust gas aftertreatment system
    Patent number: 11339702
    Abstract: Systems and methods are described for performing a diagnostic on an exhaust gas aftertreatment system. A gas entry parameter into a portion of an exhaust system of an engine is determined. In response to determining that the gas entry parameter is less than the predetermined threshold, a level of NH3 in the exhaust gas is determined. In response to determining that the level of NH3 is above a threshold value, degradation of a particulate filter of the exhaust gas aftertreatment system is indicated.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: May 24, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: David Townson, Jim Bromham
  • METHODS AND SYSTEMS FOR AN EXHAUST GAS AFTERTREATMENT SYSTEM
    Publication number: 20220082045
    Abstract: Systems and methods are described for performing a diagnostic on an exhaust gas aftertreatment system. A gas entry parameter into a portion of an exhaust system of an engine is determined. In response to determining that the gas entry parameter is less than the predetermined threshold, a level of NH3 in the exhaust gas is determined. In response to determining that the level of NH3 is above a threshold value, degradation of a particulate filter of the exhaust gas aftertreatment system is indicated.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 17, 2022
    Inventors: David Townson, Jim Bromham