Patents by Inventor Hans-Joachim Sellner

Hans-Joachim Sellner 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).

  • Patent number: 4981124
    Abstract: Method for improving the operation of a knock-controlled internal combustion engine of the type having a fault recognition system for detecting failed knock sensors comprising the steps of incrementally shifting ignition timing in response to an appropriate output signal from the fault recognizer (assuming a failed knock sensor). The preferred method provides for monitoring engine RPM exceeding a threshold value, whereby the fault recognizer is activated thereby causing the ignition timing to be incrementally shifted (retarded) with an added safety margin to a preset anti-block value. Upon sudden reactivation of a failed knock sensor, the fault recognizer is deactivated and the ignition timing is incrementally shifting to the optimum knock-control value as controlled by the knock sensor. That is, the active knock sensor overrides the preset value, but the ignition timing override occurs incrementally. For RPM below the threshold value the ignition timing is incrementally set back to knock-free settings.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: January 1, 1991
    Inventors: Hans-Joachim Sellner, Friedrich Frye