Patents by Inventor Mark D. Kushion

Mark D. Kushion 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).

  • Active deadtime control for improved torque ripple performance in electric machines
    Patent number: 6914399
    Abstract: A method for implementing active deadtime control of an inverter associated with an electric motor is disclosed. In an exemplary embodiment, the method includes receiving a command voltage signal indicative of a desired load to be driven by the motor. Based upon the value of the command voltage signal, a determined value of deadtime is applied to switching circuitry in the inverter, wherein the value of deadtime relates to an amount of time in which the switching of a device in the switching circuitry is delayed so as to prevent a short circuit condition within the inverter.
    Type: Grant
    Filed: October 14, 2002
    Date of Patent: July 5, 2005
    Assignee: Delphi Technologies
    Inventors: Mark D. Kushion, Dennis B. Skellenger
  • Active deadtime control for improved torque ripple performance in electric machines
    Publication number: 20040007999
    Abstract: A method for implementing active deadtime control of an inverter associated with an electric motor is disclosed. In an exemplary embodiment, the method includes receiving a command voltage signal indicative of a desired load to be driven by the motor. Based upon the value of the command voltage signal, a determined value of deadtime is applied to switching circuitry in the inverter, wherein the value of deadtime relates to an amount of time in which the switching of a device in the switching circuitry is delayed so as to prevent a short circuit condition within the inverter.
    Type: Application
    Filed: October 14, 2002
    Publication date: January 15, 2004
    Inventors: Mark D. Kushion, Dennis B. Skellenger
  • Integrated fueling control
    Patent number: 5596972
    Abstract: Integrated control of internal combustion engine fueling including control of fuel injectors and control of purge valve position to vary the rate at which fuel vapor trapped in a canister is purged to an engine intake manifold, determines the mass of purge vapor reaching the intake manifold, estimates the mass of purge vapor reaching each engine cylinder, and adjusts the engine cylinder fuel injection mass in response thereto to provide an accurate overall cylinder fueling insensitive to the purge rate, allowing the purge control operations to be aggressively driven while ambitious cylinder air/fuel ratio standards are maintained. Feedforward purge control proactively adjusts purge control commands in response to desired cylinder purge mass and to purge vapor flow dynamics and feedback purge control trims the purge control commands in response to a difference between the desired cylinder purge mass and estimated cylinder purge mass.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: January 28, 1997
    Assignee: General Motors Corporation
    Inventors: Myrna C. Sultan, Charles H. Folkerts, Gregory P. Matthews, Mark D. Kushion