Patents by Inventor Rodrigo L. Sanchez

Rodrigo L. Sanchez 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 controlling the speed of an engine
    Patent number: 6345602
    Abstract: The present invention provides a method and apparatus for controlling the speed of an engine. The engine has an associated turbo charger and a throttle. The method includes the steps of determining a load characteristic of the engine, determining a change in said load characteristic, and controlling the engine in response to said load change.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: February 12, 2002
    Assignee: Caterpillar Inc.
    Inventors: James B. Maddock, Fred Mehdian, Anthony E. Sloan, Rodrigo L. Sanchez, Darryl D. Baldwin
  • Method and apparatus for determining a fuel command for a fuel system
    Patent number: 6021755
    Abstract: The present invention provides a method and apparatus for determining a fuel command for an fuel system. The present invention provides a method for determining a fuel command for an engine. The method includes determining a desired and actual engine speed, comparing the desired and actual engine speeds, and controlling the air/fuel mixture flow into the intake manifold of the fuel system in response to the comparison. The inlet pressure and temperature within the manifold are then determined. A fuel command is determined in response to the manifold air pressure and temperature. The fuel command is then modified in response to the comparison of the desired and actual engine speeds.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: February 8, 2000
    Assignee: Caterpillar Inc.
    Inventors: James B. Maddock, Fred Mehdian, Rodrigo L. Sanchez