Patents by Inventor Chris Lee Stewart

Chris Lee Stewart 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).

  • Mixed mode fuel injector and injection system
    Patent number: 6978760
    Abstract: A fuel injector includes a homogenous charge nozzle outlet set and a conventional nozzle outlet set that are controlled respectively by first and second three way needle control valves. Each fuel injector includes first and second concentric needle valve members. One of the needle valve members moves to an open position for a homogenous charge injection event, while the other needle valve member moves to an open position for a conventional injection event. The fuel injector has the ability to operate in a homogenous charge mode with a homogenous charge spray pattern, a conventional mode with a conventional spray pattern or a mixed mode.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: December 27, 2005
    Assignee: Caterpillar Inc
    Inventors: Chris Lee Stewart, Ye Tian, Lifeng Wang, Scott F. Shafer