Patents by Inventor John E. Preble

John E. Preble 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).

  • Engine control system and method for initiating a diesel particulate filter regeneration
    Patent number: 9010094
    Abstract: An engine command override may occur when a diesel particulate filter (DPF) requires regeneration. The need for regeneration may be indicated by regeneration level. The engine may be operated in a normal mode when the DPF regeneration level is below a regeneration level threshold, wherein the engine command is based on the throttle input. Additionally, the engine may be operated in an override mode when the DPF regeneration level is above a regeneration level threshold and the engine is operating in the idle state, wherein the engine command is based on a predetermined throttle regeneration setting.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: April 21, 2015
    Assignee: Caterpillar Inc.
    Inventors: Kevin A. O'Neil, Arick M. Bakken, Andrew P. Bachle, John E. Preble, Jr.
  • ENGINE CONTROL SYSTEM AND METHOD FOR INITIATING A DIESEL PARTICULATE FILTER REGENERATION
    Publication number: 20130227933
    Abstract: An engine command override may occur when a diesel particulate filter (DPF) requires regeneration. The need for regeneration may be indicated by regeneration level. The engine may be operated in a normal mode when the DPF regeneration level is below a regeneration level threshold, wherein the engine command is based on the throttle input. Additionally, the engine may be operated in an override mode when the DPF regeneration level is above a regeneration level threshold and the engine is operating in the idle state, wherein the engine command is based on a predetermined throttle regeneration setting.
    Type: Application
    Filed: January 29, 2013
    Publication date: September 5, 2013
    Applicant: CATERPILLAR INC.
    Inventors: Kevin A. O'Neil, Arick M. Bakken, Andrew P. Bachle, John E. Preble, JR.
  • Cooling system for a machine
    Patent number: 7426909
    Abstract: A cooling system for a machine is provided. The machine has an operator compartment, a front end, and an engine cooled by a first heat exchanger and mounted within an engine compartment. The engine compartment is positioned behind the operator compartment in relation to the front end. A fan is mounted within the engine compartment and has an inlet and a first and a second outlet. A second heat exchanger is fluidically coupled to the fan and the engine and mounted within the engine compartment. A first fluid flow path extends from ambient to the inlet. A second fluid flow path extends from the first outlet to ambient and extends through the second heat exchanger. A third fluid flow path extends from the second outlet to ambient and extends through the first heat exchanger, and is thermally isolated from the second fluid flow path.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: September 23, 2008
    Assignee: Caterpillar S.A.R.L.
    Inventors: William J. Keane, Andy J. Stough, Robert Miller, John E. Preble, Allen J. Meek, Darryl W. Smith