Patents by Inventor Peter Pospichal

Peter Pospichal 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).

  • Virtual compressor operational parameter measurement and surge detection in a fuel cell system
    Patent number: 7771883
    Abstract: A fuel cell system that employs surge prevention by electronically mapping the compressor for discharge pressure versus mass airflow. In one embodiment, the fuel cell system employs a mass flow meter that measures the airflow to the compressor. A controller receives a signal from the mass flow meter indicative of the flow rate of the charge airflow to the compressor, and determines the outlet pressure and temperature of the compressor from the compressor speed and the measured airflow. This gives the compressor map location at which the compressor is operating. In another embodiment, the fuel cell system employs a pressure sensor that measures the output pressure of the compressor, and provides a pressure signal to the controller. The controller determines the mass airflow to the compressor to determine the compressor map location.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: August 10, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Peter Pospichal, Joseph D. Rainville
  • Virtual compressor operational parameter measurement and surge detection in a fuel cell system
    Publication number: 20050164057
    Abstract: A fuel cell system that employs surge prevention by electronically mapping the compressor for discharge pressure versus mass airflow. In one embodiment, the fuel cell system employs a mass flow meter that measures the airflow to the compressor. A controller receives a signal from the mass flow meter indicative of the flow rate of the charge airflow to the compressor, and determines the outlet pressure and temperature of the compressor from the compressor speed and the measured airflow. This gives the compressor map location at which the compressor is operating. In another embodiment, the fuel cell system employs a pressure sensor that measures the output pressure of the compressor, and provides a pressure signal to the controller. The controller determines the mass airflow to the compressor to determine the compressor map location.
    Type: Application
    Filed: January 27, 2004
    Publication date: July 28, 2005
    Inventors: Peter Pospichal, Joseph Rainville