Patents by Inventor Raymond Geraint Evans

Raymond Geraint Evans 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).

  • Fuel control system for limiting turbocharger speed
    Patent number: 8061137
    Abstract: A method is provided for operating a turbocharger. The method includes sensing a parameter indicative of a speed of a turbocharger and a parameter indicative of an engine speed. The method also includes determining a first desired engine speed based on the speed of the turbocharger, the engine speed, and a maximum desired speed of the turbocharger. The method further includes regulating a flow of fuel to an engine based on the first desired engine speed.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: November 22, 2011
    Assignee: Caterpillar Inc.
    Inventor: Raymond Geraint Evans
  • Transition wiring system for multiple traction generators
    Patent number: 7847497
    Abstract: A transition wiring system is provided. The transition wiring system may include one or more traction motors, a first generator, and a second generator. The transition wiring system may also include a first device, a second device, and a third device, each device configured to block reverse current flow. The transition wiring system may further include a single transition contactor disposed between the first generator and the second generator. The first generator and the second generator are configured to be selectively operable in-series and in-parallel.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: December 7, 2010
    Assignee: Caterpillar Inc
    Inventors: Raymond Geraint Evans, Walter Earle Earleson
  • Fuel control system for limiting turbocharger speed
    Publication number: 20090293476
    Abstract: A method is provided for operating a turbocharger. The method includes sensing a parameter indicative of a speed of a turbocharger and a parameter indicative of an engine speed. The method also includes determining a first desired engine speed based on the speed of the turbocharger, the engine speed, and a maximum desired speed of the turbocharger. The method further includes regulating a flow of fuel to an engine based on the first desired engine speed.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 3, 2009
    Inventor: Raymond Geraint Evans
  • Transition wiring system for multiple traction generators
    Publication number: 20090179601
    Abstract: A transition wiring system is provided. The transition wiring system may include one or more traction motors, a first generator, and a second generator. The transition wiring system may also include a first device, a second device, and a third device, each device configured to block reverse current flow. The transition wiring system may further include a single transition contactor disposed between the first generator and the second generator. The first generator and the second generator are configured to be selectively operable in-series and in-parallel.
    Type: Application
    Filed: January 15, 2008
    Publication date: July 16, 2009
    Inventors: Raymond Geraint Evans, Walter Earle Earleson