Patents by Inventor Craig Savonen

Craig Savonen 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).

  • Electronic controlled engine exhaust treatment system to reduce NOx emissions
    Patent number: 6422219
    Abstract: A system and method is provided for treating engine exhaust gases produced by an internal combustion engine. The internal combustion engine has an exhaust gas recirculation circuit which diverts engine exhaust gas from an engine exhaust gas manifold to an engine air intake manifold. An exhaust gas recirculation valve is further provided for controlling the amount of engine exhaust gas diverted toward the engine air intake manifold. Additionally, a small meter pump is provided to create a pressure differential sufficient to introduce a finely tunable and controllable amount of engine exhaust gas into the engine air intake manifold.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: July 23, 2002
    Assignee: Detroit Diesel Corporation
    Inventors: Craig Savonen, Phillip F. Rimnac, Richard M. Avery, Jr.