Patents by Inventor David R. KOSMALSKI

David R. KOSMALSKI 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).

  • Positive crankcase ventilation system diagnostic systems and methods
    Patent number: 10008049
    Abstract: A fault diagnostic system of a vehicle includes a noise module that determines a noise value based on a plurality of differences between samples of a pressure signal generated by a pressure sensor located in a positive crankcase ventilation (PCV) system of an engine. A signal module determines a signal value based on the samples of the pressure signal generated by the pressure sensor located in the PCV system of the engine. A diagnostic value module determines a diagnostic value based on one of: (i) a product of the noise value and the signal value; and (ii) a sum based on the noise value and the signal value. A fault module selectively diagnoses a fault in the PCV system based on the diagnostic value and generates a malfunction indicator within a passenger cabin of the vehicle in response to the diagnosis of the fault in the PCV system.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: June 26, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Wenbo Wang, Layne K. Wiggins, David R. Kosmalski
  • POSITIVE CRANKCASE VENTILATION SYSTEM DIAGNOSTIC SYSTEMS AND METHODS
    Publication number: 20170256103
    Abstract: A fault diagnostic system of a vehicle includes a noise module that determines a noise value based on a plurality of differences between samples of a pressure signal generated by a pressure sensor located in a positive crankcase ventilation (PCV) system of an engine. A signal module determines a signal value based on the samples of the pressure signal generated by the pressure sensor located in the PCV system of the engine. A diagnostic value module determines a diagnostic value based on one of: (i) a product of the noise value and the signal value; and (ii) a sum based on the noise value and the signal value. A fault module selectively diagnoses a fault in the PCV system based on the diagnostic value and generates a malfunction indicator within a passenger cabin of the vehicle in response to the diagnosis of the fault in the PCV system.
    Type: Application
    Filed: March 3, 2016
    Publication date: September 7, 2017
    Inventors: Wenbo WANG, Layne K. WIGGINS, David R. KOSMALSKI