Patents by Inventor Thomas Allan Huls

Thomas Allan Huls 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 system for estimating fuel vapor pressure
    Patent number: 5878727
    Abstract: A method for estimating fuel vapor pressure includes determining (102) an amount of fuel present in a fuel tank, pumping (104) a vapor mixture from the fuel tank until a predetermined gauge pressure is obtained, and measuring (108) the time necessary to reach the predetermined gauge pressure. Fuel vapor pressure is than directly quantified (108) based on the measured time and the detected fill level. Thus, an estimate of the fuel vapor pressure can be obtained without requiring information regarding fuel temperature, or addition of any dedicated sensor circuitry to a conventional on-board vapor management/leak detection system.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: March 9, 1999
    Assignee: Ford Global Technologies, Inc.
    Inventor: Thomas Allan Huls