Patents by Inventor Daniel R. Hashbarger

Daniel R. Hashbarger 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).

  • Particulate filter diagnostics
    Patent number: 8707807
    Abstract: A system includes an internal combustion engine producing an exhaust stream, a particulate filtering device that treats the exhaust stream, a particulate sensor operatively coupled to the exhaust stream at a position downstream of the particulate filtering device, and a temperature sensor operatively coupled to the exhaust stream. The system includes a controller that interprets a particulate sensor particulate stability condition, interprets a particulate sensor input value and a particulate sensor temperature, compensates the particulate sensor input value in response to the particulate sensor temperature, and filters the compensated particulate sensor input value. The controller determines a soot accumulation value in response to the filtered compensated particulate sensor input value, interprets a diagnostic enable condition, and determines a particulate filter diagnostic value in response to the active diagnostic enable condition and the soot accumulation value.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: April 29, 2014
    Assignee: Cummins Inc.
    Inventors: Pranati Yadav, Phanindra Garimella, Joan M. Wills, Daniel R. Hashbarger, Ross C. Berryhill, Dean H. Dringenburg
  • PARTICULATE FILTER DIAGNOSTICS
    Publication number: 20120125081
    Abstract: A system includes an internal combustion engine producing an exhaust stream, a particulate filtering device that treats the exhaust stream, a particulate sensor operatively coupled to the exhaust stream at a position downstream of the particulate filtering device, and a temperature sensor operatively coupled to the exhaust stream. The system includes a controller that interprets a particulate sensor particulate stability condition, interprets a particulate sensor input value and a particulate sensor temperature, compensates the particulate sensor input value in response to the particulate sensor temperature, and filters the compensated particulate sensor input value. The controller determines a soot accumulation value in response to the filtered compensated particulate sensor input value, interprets a diagnostic enable condition, and determines a particulate filter diagnostic value in response to the active diagnostic enable condition and the soot accumulation value.
    Type: Application
    Filed: June 22, 2011
    Publication date: May 24, 2012
    Inventors: Pranati Yadav, Phanindra Garimella, Joan M. Wills, Daniel R. Hashbarger, Ross C. Berryhill, Dean H. Dringenburg