Patents by Inventor David N. Benton

David N. Benton 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 for determining oxygen storage capacity time of a catalytic converter
    Patent number: 6694243
    Abstract: An on-board catalyst diagnostic for monitoring the conversion efficiencies of a catalytic converter by measuring the oxygen storage capacity (OSC) of the converter. The measurement of the OSC indicates the degree of health of the converter. Under the same engine running conditions, the greater the OSC measurement, the healthier the converter. A modeled OSC is compared to the real OSC to determine a normalized OSC. The normalized OSC is compared to a predetermined threshold value in order to determine the health of the converter. The modeled OSC takes into consideration variables which will affect the value of the OSC.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: February 17, 2004
    Assignee: General Motors Corporation
    Inventors: Guojun Shi, Sharanjit Singh, Minghui Kao, David N. Benton, David W. Dempsey
  • Method and apparatus for determining oxygen storage capacity time of a catalytic converter
    Publication number: 20020120386
    Abstract: An on-board catalyst diagnostic for monitoring the conversion efficiencies of a catalytic converter by measuring the oxygen storage capacity (OSC) of the converter. The measurement of the OSC indicates the degree of health of the converter. Under the same engine running conditions, the greater the OSC measurement, the healthier the converter. A modeled OSC is compared to the real OSC to determine a normalized OSC. The normalized OSC is compared to a predetermined threshold value in order to determine the health of the converter. The modeled OSC takes into consideration variables which will affect the value of the OSC.
    Type: Application
    Filed: February 27, 2001
    Publication date: August 29, 2002
    Inventors: Guojun Shi, Sharanjit Singh, Minghui Kao, David N. Benton, David W. Dempsey