Patents by Inventor David Trumpy

David Trumpy 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).

  • COMPRESSION RATIO MODE SELECTION LOGIC FOR AN INTERNAL COMBUSTION ENGINE HAVING DISCRETE VARIABLE COMPRESSION RATIO CONTROL MECHANISM
    Publication number: 20050273245
    Abstract: A method and system for operating an internal combustion engine. The internal combustion engine is operable in a plurality of compression ratio operating modes. The method includes determining a relationship between a base engine threshold load where the high compression and low compression provide substantially the same engine fuel consumption and engine speed. The determined nominal relationship is modified by a factor, such factor being a function of a condition under which such engine is operating, to obtain a modified relationship. The modified relationship is a function of engine speed and the condition has an effect on knock generation in such engine. The modified relationship and engine speed are used in selecting one of the plurality of compression ratio operating modes for the engine.
    Type: Application
    Filed: June 3, 2004
    Publication date: December 8, 2005
    Inventors: Yin Chen, Woong-chul Yang, William Dutcher, David Trumpy, In Yoo, Chris Glugla, Diana Brehob