Patents by Inventor David L. Zwetz, II

David L. Zwetz, II 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: 7509221
    Abstract: A method of setting up a genset system for operation includes selecting one of a plurality of different sensors to monitor an operating parameter of a genset system, and coupling the selected sensor with a data processor of the genset system. The method further includes configuring the data processor for processing inputs from the selected sensor, for example an optional replacement sensor, by entering custom sensor calibration data for the selected sensor and recording the custom sensor calibration data on at least one computer writable medium of a control system for the genset system. A genset system includes a combustion engine, a generator, a set of standard sensors, and a control system. The control system includes a data processor configured to receive and process inputs from custom sensors, and includes a computer writable medium for storing custom sensor calibration data.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: March 24, 2009
    Assignee: Caterpillar Inc.
    Inventors: Keith R. Folken, Michael A. Dvorsky, James D. McBurney, Julie Boley, Stephen C. Nofsinger, David L. Zwetz, II, Andrew W. Black
  • Patent number: 7000590
    Abstract: A engine control system and a method of controlling a torque output of an internal combustion engine is disclosed. The engine control system comprises a torque receiving device operably connected to the engine, a sensor to sense an engine parameter, and an electronic device operably connected to the sensor. The electronic sensor is operable to determine a second engine speed from sensed engine parameters, a droop speed, and a selected one of a plurality of torque maps requiring a minimum amount of fuel. The electronic sensor is also operable to transmit a signal indicative of the second engine speed to a fuel system to control the amount of fuel delivered to the engine.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: February 21, 2006
    Inventors: Douglas J. Carlton, Kevin B. Hagenauer, Christopher J. Wichael, David L. Zwetz, II
  • Patent number: 6853891
    Abstract: Apparatuses and methods for controlling the engine speed of an engine. A throttle receives an operator input indicative of a desired engine speed. A first sensor is coupled with the throttle, and transmits a throttle signal indicative of a position of the throttle. A minimum speed governor is coupled with the first sensor to receive the throttle signal. The minimum speed governor determines a rate of change of the throttle signal, and transmits a minimum engine speed signal indicative of a desired minimum engine speed of the engine as a function of the rate of change of the throttle signal.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: February 8, 2005
    Assignee: Caterpillar Inc.
    Inventors: Gregory S. Hasler, David L. Zwetz, II
  • Patent number: D715798
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: October 21, 2014
    Assignee: Caterpillar Inc.
    Inventors: Victoria A. De La Cruz, Douglas J. Carlton, Scott D. Larson, David L. Zwetz, II, Richard E. Randell
  • Patent number: D716298
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: October 28, 2014
    Assignee: Caterpillar Inc.
    Inventors: Victoria A. De La Cruz, Douglas J. Carlton, Scott D. Larson, David L. Zwetz, II, Michael S. Hemry