Patents by Inventor Brett A. Dunn

Brett A. Dunn 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).

  • Spark knock detection system for an internal combustion engine
    Patent number: 5483936
    Abstract: A spark knock detection system is disclosed which has a vibration detector connected in proximity to the engine for converting a vibration into an electrical output signal representative of the vibration. A sampler which is connected to the vibration detector samples the electrical output signal and converts the electrical output signal into a numerical data pattern corresponding to the electrical output signal. A feature extractor which is connected to the sampler converts the numerical data pattern into frequency domain signal portions which have a magnitude. A classifier which is connected to the feature extractor receives the frequency domain signal portions. The classifier has predetermined coefficients for classifying the frequency domain signal portions to indicate the presence of spark knock.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: January 16, 1996
    Inventors: Scott M. Kerstein, Stephen C. Simmons, Brett A. Dunn, Duane M. Grider