Patents by Inventor Frédéric F. Jacquelin

Frédéric F. Jacquelin 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).

  • Indirect variable valve actuation for an internal combustion engine
    Patent number: 7137381
    Abstract: A reciprocating piston-type internal combustion engine includes an engine cylinder, an intake port, an intake runner providing a passage through which intake gas enters the cylinder through the intake port, an intake valve for opening and closing the intake port, and a first flap located in the intake runner upstream from the intake valve, arranged in series with the intake valve, and having first and second positional states that vary during each engine cycle. The first state opens the intake runner passage to permit intake gas to enter the cylinder through the intake port. The second state at least partially closes the intake runner passage to control the flow of gas exiting or entering the cylinder through the intake port.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: November 21, 2006
    Assignee: Ricardo, Inc.
    Inventors: Russell J. Wakeman, Frédéric F. Jacquelin