Patents by Inventor Guopeng Hu

Guopeng Hu 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).

  • Vapor purge system integrity diagnosis for a hybrid vehicle
    Patent number: 8336526
    Abstract: A method for testing a vapor purge system (VPS), and the vehicle having the VPS, including a controller for measuring a VPS pressure, closing a first valve coupling a VPS carbon canister and the environment, decreasing VPS pressure if it is greater than a threshold, and monitoring VPS pressure for a time period when the engine is at rest and the vehicle is operating. The pressure is decreased by opening a second valve coupling the fuel tank and the engine while the engine is running, and closing the second valve when the pressure is below the threshold. Another method for testing a VPS includes closing a first valve, closing a second valve, measuring the VPS pressure to provide a reference pressure with an associated profile, and monitoring VPS pressure compared to the profile for a time period.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: December 25, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Douglas Raymond Martin, Ann Irene Sipes, Robert Roy Jentz, Aed Mohammad Dudar, Mark W. Peters, Guopeng Hu