Patents by Inventor Jan Biebrach

Jan Biebrach 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).

  • Flow estimation based on anode pressure response in fuel cell system
    Patent number: 8701468
    Abstract: A method for determining the flow of an anode gas out of an anode sub-system. The method includes providing pressure measurements at predetermined sample times over a predetermined sample period and using the pressure measurements to calculate a slope of a line defining a change of the pressure from the beginning of the time period to the end of the time period. The slope of the pressure line is then used in a flow equation to determine the amount of gas that flows out of the anode sub-system, which can be through a valve or by system leaks.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: April 22, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Daniel C. Di Fiore, Jan Biebrach
  • FLOW ESTIMATION BASED ON ANODE PRESSURE RESPONSE IN FUEL CELL SYSTEM
    Publication number: 20120156575
    Abstract: A method for determining the flow of an anode gas out of an anode sub-system. The method includes providing pressure measurements at predetermined sample times over a predetermined sample period and using the pressure measurements to calculate a slope of a line defining a change of the pressure from the beginning of the time period to the end of the time period. The slope of the pressure line is then used in a flow equation to determine the amount of gas that flows out of the anode sub-system, which can be through a valve or by system leaks.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 21, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Daniel C. Di Fiore, Jan Biebrach