Patents by Inventor Hermann Palm

Hermann Palm 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).

  • Arrangement for monitoring rotational speed sensor
    Patent number: 5197326
    Abstract: An arrangement for monitoring a rotational speed sensor of an internal combustion engine having a starter and a rotational speed sensor which supplies an output signal in dependence on a rotational speed, has a unit for measuring a vehicle electrical system voltage, and a control device in which an output signal of the rotational speed sensor is related to a vehicle electrical system voltage and an error operation of the rotational speed sensor is monitored. The measuring unit and the control device are formed so that for error recognition a course of the vehicle electrical system voltage is evaluated during a starting process of the internal combustion engine, and an error recognition is released only when a typical course of a starting process for the vehicle electrical system voltage is recognized and simultaneously no output signal of the rotational speed sensor is recognized.
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: March 30, 1993
    Assignee: Robert Bosch GmbH
    Inventor: Hermann Palm