Patents by Inventor James Wallace Harris

James Wallace Harris 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).

  • Patent number: 8430068
    Abstract: A cooling system is disclosed. The cooling system may have a heat source, a heat exchanger, and a coolant pump located between the heat exchanger and the heat source to direct coolant from the heat exchanger to the heat source. The cooling system may also have a valve located between the heat source and the heat exchanger. The valve may be movable to vary a rate of coolant flow through the heat exchanger and around the heat exchanger to the coolant pump. The cooling system may further have a sensor located at an inlet of the heat source to generate a signal indicative of coolant temperature at the inlet, and a controller in communication with the valve and the sensor. The controller may be configured to move the valve based on the temperature of the coolant at only the inlet of the heat source.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: April 30, 2013
    Inventors: James Wallace Harris, Michael Patrick Ramm, Jeffery Lynn Prewett
  • Patent number: 7634985
    Abstract: A method of controlling a common rail fuel system for an engine is disclosed. The method includes delivering fuel to a fuel injector fluidly coupled to a common rail. The common rail is fluidly coupled to a fuel tank through a pump. The method also includes sending a signal to the fuel injector to deliver a first quantity of fuel to the engine. The first quantity being indicative of a desired power from the engine. The method further includes detecting a fuel transfer pressure upstream of the pump, and derating the engine as a function of the detected fuel transfer pressure. The derating includes decreasing the first quantity of fuel.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: December 22, 2009
    Assignee: Caterpillar Inc.
    Inventors: Troy A. Parker, James Wallace Harris, Mitchel Ryan Deckard
  • Publication number: 20090143958
    Abstract: A method of controlling a common rail fuel system for an engine is disclosed. The method includes delivering fuel to a fuel injector fluidly coupled to a common rail. The common rail is fluidly coupled to a fuel tank through a pump. The method also includes sending a signal to the fuel injector to deliver a first quantity of fuel to the engine. The first quantity being indicative of a desired power from the engine. The method further includes detecting a fuel transfer pressure upstream of the pump, and derating the engine as a function of the detected fuel transfer pressure. The derating includes decreasing the first quantity of fuel.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 4, 2009
    Inventors: Troy A. Parker, James Wallace Harris, Mitchel Ryan Deckard
  • Publication number: 20080295785
    Abstract: A cooling system is disclosed. The cooling system may have a heat source, a heat exchanger, and a coolant pump located between the heat exchanger and the heat source to direct coolant from the heat exchanger to the heat source. The cooling system may also have a valve located between the heat source and the heat exchanger. The valve may be movable to vary a rate of coolant flow through the heat exchanger and around the heat exchanger to the coolant pump. The cooling system may further have a sensor located at an inlet of the heat source to generate a signal indicative of coolant temperature at the inlet, and a controller in communication with the valve and the sensor. The controller may be configured to move the valve based on the temperature of the coolant at only the inlet of the heat source.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 4, 2008
    Inventors: James Wallace Harris, Michael Patrick Ramm, Jeffery Lynn Prewett
  • Publication number: 20080264374
    Abstract: A starter control system for a combustion engine is disclosed. The starter control system may have a first starter and a second starter each coupled to independently initiate cranking of the combustion engine, and a sensor to generate a first signal indicative of an operational condition. The starter control system may further include a controller communicatively coupled to the first and second starters and the sensor. The controller may be configured to determine a status of the first starter and a status of the second starter based on the first signal, and command one of the first and second starters to crank the combustion engine to an ignition speed based the status of the first starter and the status of the second starter in response to a request to start the engine.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventor: James Wallace Harris