Patents by Inventor Peter Bobretzky

Peter Bobretzky 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).

  • Method for controlling a coolant pump of an internal combustion engine
    Patent number: 6216645
    Abstract: In an electrically driven coolant pump with an electromotor-pump unit an electronic control unit, generates a pulse-width modulated control signal for the pump depending on at least one engine operating parameter. In order to recognize irregularities and malfunctions in the pump's operation in due time, the control unit is connected with an error detector for the recognition of abnormal control signals and pump operating conditions and with a speed controlling device for the pump speed, with the error detector having an emergency device for the coolant pump.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: April 17, 2001
    Assignee: TCG Unitech Aktiengesellschaft
    Inventors: Peter Bobretzky, Harald Pastleitner