Patents by Inventor Mathew J. Seiberlich

Mathew J. Seiberlich 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).

  • Control of a variable geometry turbocharger by sensing exhaust pressure
    Patent number: 6418719
    Abstract: There is provided a system and method for using an engine's exhaust back pressure to control a variable geometry turbocharger. The control system determines a desired exhaust back pressure based on engine speed and engine load. The desired exhaust back pressure is compared with a measured exhaust back pressure to determine the difference between the measured and desired exhaust back pressures. The difference value is used to determine the duty cycle. In an alternate embodiment, the exhaust gas pressure is used to adjust the duty cycle determined by other operating parameters. A base duty cycle is determined from the engine speed and the engine load. The difference between the measured and desired exhaust back pressures is used to determine an exhaust pressure control duty cycle. The base duty cycle is then adjusted by the exhaust pressure control duty cycle to give a turbocharger duty cycle.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: July 16, 2002
    Assignee: International Engine Intellectual Property Company, L.L.C.
    Inventors: Wesley J. Terry, Mathew J. Seiberlich, Brian J. Murphy
  • Control of a variable geometry turbocharger by sensing exhaust pressure
    Publication number: 20010032465
    Abstract: There is provided a system and method for using an engine's exhaust back pressure to control a variable geometry turbocharger. The control system determines a desired exhaust back pressure based on engine speed and engine load. The desired exhaust back pressure is compared with a measured exhaust back pressure to determine the difference between the measured and desired exhaust back pressures. The difference value is used to determine the duty cycle. In an alternate embodiment, the exhaust gas pressure is used to adjust the duty cycle determined by other operating parameters. A base duty cycle is determined from the engine speed and the engine load. The difference between the measured and desired exhaust back pressures is used to determine an exhaust pressure control duty cycle. The base duty cycle is then adjusted by the exhaust pressure control duty cycle to give a turbocharger duty cycle.
    Type: Application
    Filed: January 19, 2001
    Publication date: October 25, 2001
    Inventors: Wesley J. Terry, Mathew J. Seiberlich, Brian J. Murphy