Patents by Inventor Charles J Van Horn

Charles J Van Horn 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 AND APPARATUS TO DETECT A MODE-GEAR MISMATCH DURING OPERATION OF AN ELECTRO-MECHANICAL TRANSMISSION
    Publication number: 20090075773
    Abstract: A method for operating the powertrain includes monitoring operator inputs, monitoring a transmission output, and terminating an engine operating mode when a time-rate change in the transmission output exceeds a threshold absent a change in the monitored operator inputs.
    Type: Application
    Filed: September 13, 2007
    Publication date: March 19, 2009
    Inventors: Ryan D. Martini, Charles J. Van Horn, Peter E. Wu, Andrew M. Zettel, Sam Almasri, Jy-Jen F. Sah
  • METHOD AND APPARATUS TO MONITOR AN OUTPUT SPEED SENSOR DURING OPERATION OF AN ELECTRO-MECHANICAL TRANSMISSION
    Publication number: 20090076679
    Abstract: There is provided a method to monitor a sensing system adapted to monitor an output of an electro-mechanical transmission. This includes monitoring rotational speed of a wheel operatively connected to a driveline operatively connected to the output of the electro-mechanical transmission. A first expected output of the transmission is determined based upon the output of the first sensor. A second expected output of the transmission is determined based upon a rotational speed of a torque-generative device operatively connected to the transmission. The first and second expected outputs and an output of the sensing system adapted to monitor the output of the electro-mechanical transmission are compared.
    Type: Application
    Filed: September 13, 2007
    Publication date: March 19, 2009
    Inventors: Ryan D. Martini, Charles J. Van Horn, Peter E. Wu, Andrew M. Zettel, Rezaul Karim, Jeffrey R. Dec, Sailaja Paladugu