Patents by Inventor Christopher P. Murphy

Christopher P. Murphy 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).

  • Brake booster vacuum prediction algorithm and method of use therefor
    Patent number: 7152933
    Abstract: An algorithm residing in, for example the ECM of a motor vehicle, which predicts brake booster vacuum for vehicles using vacuum for brake pedal assist. The predicted brake booster vacuum is compared to a calibrated brake booster vacuum threshold to determine if adequate brake booster vacuum is available to meet vehicle braking requirements, whereupon engine operation can be modified, as necessary, to improve intake manifold vacuum such that brake booster vacuum requirements for vehicle braking are better satisfied.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: December 26, 2006
    Assignee: General Motors Corporation
    Inventors: James F. Collins, Robert L. Nisonger, Christopher P. Murphy
  • Brake booster vacuum prediction algorithm and method of use therefor
    Patent number: 7040719
    Abstract: An algorithm residing in, for example the ECM of a motor vehicle, which predicts brake booster vacuum for vehicles using vacuum for brake pedal assist. The predicted brake booster vacuum is compared to a calibrated brake booster vacuum threshold to determine if adequate brake booster vacuum is available to meet vehicle braking requirements, whereupon engine operation can be modified, as necessary, to improve intake manifold vacuum such that brake booster vacuum requirements for vehicle braking are better satisfied.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: May 9, 2006
    Assignee: General Motors Corporation
    Inventors: James F. Collins, Robert L. Nisonger, Christopher P. Murphy