Patents by Inventor James Dosdall

James Dosdall 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 to estimate variable valve performance degradation
    Patent number: 7171929
    Abstract: A system comprising of an engine having a first group of cylinders and a second group of cylinders, a first variable valve system in said first group, a second variable valve system in said second group, and a controller for determining degradation of operation of at least one of said first and second variable valve systems, said controller determining said degradation in response to controller errors of said valves and differences between operation of said first and second valve systems.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: February 6, 2007
    Assignee: Ford Global Technologies, LLC
    Inventors: James Dosdall, Steve Magner, Mrdjan Jankovic
  • Method to estimate variable valve performance degradation
    Publication number: 20060169232
    Abstract: A system comprising of an engine having a first group of cylinders and a second group of cylinders, a first variable valve system in said first group, a second variable valve system in said second group, and a controller for determining degradation of operation of at least one of said first and second variable valve systems, said controller determining said degradation in response to controller errors of said valves and differences between operation of said first and second valve systems.
    Type: Application
    Filed: February 2, 2005
    Publication date: August 3, 2006
    Inventors: James Dosdall, Steve Magner, Mrdjan Jankovic