Patents by Inventor William N. Groves

William N. Groves 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).

  • Exhaust gas recirculation type internal combustion engines and method of operating same
    Patent number: 4393853
    Abstract: A multi-cylinder internal combustion engine is disclosed in which a portion of the exhaust gas is selectively added to each cylinder. The exhaust gas is caused to swirl along the inside wall of the cylinder. Air or a fuel/air mixture is caused to swirl in a central zone in the cylinder in the same direction of swirl as the direction of swirl of the exhaust gas thereby providing a stratified exhaust gas recirculation design.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: July 19, 1983
    Assignee: Research Corporation
    Inventor: William N. Groves