Patents by Inventor Thomas W. Carlill

Thomas W. Carlill 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).

  • Method and apparatus for controlling emissions from internal combustion engines
    Patent number: 7849834
    Abstract: An internal combustion engine is provided with a control arrangement for influencing exhaust gas pressures and the level of In-Cylinder-Charge-Dilution (ICCD) so as to provide cycles with different emission characteristics. The exhaust gas pressure may be influenced by adjusting a combustion parameter between various cycles. The adjustment of the combustion parameter may, for example, include an adjustment of the injection timing, a change in shot mode, or a change in fuel quantity. By making such adjustments, cycle-to-cycle exhaust gas pressure variations may be introduced so as to influence future combustion events and reduce overall emissions and noise levels.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: December 14, 2010
    Assignee: Perkins Engine Company Limited
    Inventor: Thomas W. Carlill
  • Self-sustaining oxy-exothermal filter regeneration system
    Patent number: 7805931
    Abstract: An exhaust-treatment system is provided having an oxidation catalyst configured to heat exhaust gas flowing through the oxidation catalyst. The system also has a particulate filter configured to receive the heated exhaust gas, and a recirculation loop configured to receive a portion of heated exhaust gas downstream of the oxidation catalyst and deliver the portion of exhaust gas upstream of the oxidation catalyst.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: October 5, 2010
    Assignee: Perkins Engines Company Limited
    Inventor: Thomas W. Carlill
  • Method and apparatus for controlling emissions from internal combustion engines
    Publication number: 20080162019
    Abstract: An internal combustion engine is provided with a control arrangement for influencing exhaust gas pressures and the level of In-Cylinder-Charge-Dilution (ICCD) so as to provide cycles with different emission characteristics. The exhaust gas pressure may be influenced by adjusting a combustion parameter between various cycles. The adjustment of the combustion parameter may, for example, include an adjustment of the injection timing, a change in shot mode, or a change in fuel quantity. By making such adjustments, cycle-to-cycle exhaust gas pressure variations may be introduced so as to influence future combustion events and reduce overall emissions and noise levels.
    Type: Application
    Filed: December 19, 2007
    Publication date: July 3, 2008
    Inventor: Thomas W. Carlill
  • Self-sustaining oxy-exothermal filter regeneration system
    Publication number: 20080098723
    Abstract: An exhaust-treatment system is provided having an oxidation catalyst configured to heat exhaust gas flowing through the oxidation catalyst. The system also has a particulate filter configured to receive the heated exhaust gas, and a recirculation loop configured to receive a portion of heated exhaust gas downstream of the oxidation catalyst and deliver the portion of exhaust gas upstream of the oxidation catalyst.
    Type: Application
    Filed: October 30, 2006
    Publication date: May 1, 2008
    Inventor: Thomas W. Carlill