Patents by Inventor James J. Fier

James J. Fier 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 for controlling regeneration of exhaust gas aftertreatment components
    Patent number: 7543446
    Abstract: A system and method are provided for controlling regeneration of exhaust gas aftertreatment components coupled to an internal combustion engine. For example, the particulate load of a particulate filter is monitored and a road speed of the vehicle is determined. If the particulate load is greater than a particulate load threshold and the road speed is greater than a road speed threshold, regeneration of the particulate filter is initiated. As another example, the sulfur oxide load (SOx) of a NOx catalyst is also monitored, and if the SOx load is greater than a SOx threshold while the particulate filter is being regenerated, regeneration of the particulate filter is terminated and SOx regeneration of the NOx catalyst is initiated.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: June 9, 2009
    Assignee: Cummins, Inc.
    Inventors: Michael J. Ruth, Stewart D. Sullivan, Lyle E. Kocher, Michael J. Cunningham, Neal W. Currier, James J. Fier, Samuel C. Geckler
  • SYSTEM FOR CONTROLLING REGENERATION OF EXHAUST GAS AFTERTREATMENT COMPONENTS
    Publication number: 20080173011
    Abstract: A system and method are provided for controlling regeneration of exhaust gas aftertreatment components coupled to an internal combustion engine. For example, the particulate load of a particulate filter is monitored and a road speed of the vehicle is determined. If the particulate load is greater than a particulate load threshold and the road speed is greater than a road speed threshold, regeneration of the particulate filter is initiated. As another example, the sulfur oxide load (SOx) of a NOx catalyst is also monitored, and if the SOx load is greater than a SOx threshold while the particulate filter is being regenerated, regeneration of the particulate filter is terminated and SOx regeneration of the NOx catalyst is initiated.
    Type: Application
    Filed: December 17, 2007
    Publication date: July 24, 2008
    Inventors: Michael J. Ruth, Stewart D. Sullivan, Lyle E. Kocher, Michael J. Cunningham, Neal W. Currier, James J. Fier, Samuel C. Geckler