Patents by Inventor Kenneth G. Macklem

Kenneth G. Macklem 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).

  • Patent number: 5119781
    Abstract: A method is described for controlling the injection of fuel in a direct injected, multi-cylinder internal combustion engine, to smooth transients in engine output torque associated with a deceleration fuel cut-off mode of engine operation. This is accomplished by detecting engine operating conditions that call for the initiation of a transition associated with the decelaration fuel cut-off engine operating mode. In response to the detected operating conditions, a transitional period is initiated, during which the injection of fuel into a varying portion of engine cylinders is then interrupted. When the transitional period is associated with entry into the deceleration fuel cut-off mode, the injection of fuel to a progressively increasing number of cylinders is interrupted. When the transitional period is associated with recovery from the deceleration fuel cut-off mode, the injection of fuel to a progressively decreasing number of engine cylinders is interrupted.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: June 9, 1992
    Assignee: General Motors Corporation
    Inventors: Douglas E. Trombley, Kenneth J. Buslepp, Paul E. Reinke, Steven D. Stiles, Kenneth G. Macklem