Patents by Inventor Dana Ray COLDREN

Dana Ray COLDREN 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: 11506162
    Abstract: A fuel system includes a fuel injector having a split check assembly with a control piece, an outlet piece, and a check sleeve. A trapped volume is formed between the control piece and the outlet piece within the check sleeve, to hydraulically couple the control piece to the outlet piece. A starting rate shape clearance fluidly connects the trapped volume to a fuel cavity and is formed between the check sleeve and one of the control piece or outlet piece received therein, and modulates a starting rate shape of fuel injection from the fuel injector. Related methodology is disclosed.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: November 22, 2022
    Assignee: Caterpillar Inc.
    Inventors: Cory Andrew Brown, Sana Mahmood, Dana Ray Coldren, Glenn Brian Cox, Matthew Robert Vanderveen
  • Patent number: 11506163
    Abstract: A fuel injector nozzle assembly includes a two-piece outlet check having a timing control piece and a rate control piece. A nozzle passage is formed between a nozzle body and a two-piece outlet check, and a sac cavity is formed by the rate control piece and the nozzle body and fluidly connects a through-hole in the rate control piece to nozzle outlets. A starting-flow clearance is formed by the rate control piece and the timing control piece, and is opened by moving the timing control piece relative to the rate control piece. Moving the rate control piece relative to the nozzle body opens a main-flow seat. The nozzle assembly provides a slow starting injection rate shape in a common rail or similar fuel system and improved controllability over minimum delivery quantities.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: November 22, 2022
    Assignee: Caterpillar Inc.
    Inventors: Sana Mahmood, Glenn Brian Cox, Dana Ray Coldren
  • Publication number: 20220290641
    Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.
    Type: Application
    Filed: June 3, 2022
    Publication date: September 15, 2022
    Applicant: Caterpillar Inc.
    Inventors: Eric Lee Schroeder, David Todd Montgomery, Dana Ray Coldren, Chad Koci
  • Publication number: 20220243691
    Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 4, 2022
    Applicant: Caterpillar Inc.
    Inventors: Eric Lee Schroeder, David Todd Montgomery, Dana Ray Coldren, Chad Koci
  • Patent number: 11384721
    Abstract: A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: July 12, 2022
    Assignee: Caterpillar Inc.
    Inventors: Eric Lee Schroeder, David Todd Montgomery, Dana Ray Coldren, Chad Koci
  • Publication number: 20220186697
    Abstract: A fuel injector nozzle assembly includes a two-piece outlet check having a timing control piece and a rate control piece. A nozzle passage is formed between a nozzle body and a two-piece outlet check, and a sac cavity is formed by the rate control piece and the nozzle body and fluidly connects a through-hole in the rate control piece to nozzle outlets. A starting-flow clearance is formed by the rate control piece and the timing control piece, and is opened by moving the timing control piece relative to the rate control piece. Moving the rate control piece relative to the nozzle body opens a main-flow seat. The nozzle assembly provides a slow starting injection rate shape in a common rail or similar fuel system and improved controllability over minimum delivery quantities.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 16, 2022
    Applicant: Caterpillar Inc.
    Inventors: Sana Mahmood, Glenn Brian Cox, Dana Ray Coldren
  • Publication number: 20220154673
    Abstract: A fuel system includes a fuel injector having a split check assembly with a control piece, an outlet piece, and a check sleeve. A trapped volume is formed between the control piece and the outlet piece within the check sleeve, to hydraulically couple the control piece to the outlet piece. A starting rate shape clearance fluidly connects the trapped volume to a fuel cavity and is formed between the check sleeve and one of the control piece or outlet piece received therein, and modulates a starting rate shape of fuel injection from the fuel injector. Related methodology is disclosed.
    Type: Application
    Filed: November 17, 2020
    Publication date: May 19, 2022
    Applicant: Caterpillar Inc.
    Inventors: Cory Andrew Brown, Sana Mahmood, Dana Ray Coldren, Glenn Brian Cox, Matthew Robert Vanderveen
  • Publication number: 20220082073
    Abstract: A fuel injector includes an injector housing, an outlet check, an injection control valve assembly, and a valve seat orifice plate integrating a valve seat and various orifices for outlet check control. In the valve seat orifice plate a drain orifice extends between a valve seat surface and a check control chamber formed between a closing hydraulic surface of the outlet check and the valve seat orifice plate. First and second re-pressurization orifices extend between an outer surface of the valve seat orifice plate and the check control chamber.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 17, 2022
    Applicant: Caterpillar Inc.
    Inventors: Cory Andrew Brown, Matthew Robert Vanderveen, Andrew Justin Wallis, Michael Curtis Herr, Dana Ray Coldren
  • Patent number: 11125147
    Abstract: An ignition system for an internal combustion engine includes an igniter having an igniter housing with a combustion prechamber formed therein, and a piston movable within the igniter housing to increase a pressure of an ignition charge of fuel and air within the combustion prechamber to an autoignition threshold. The ignition system includes a hydraulic actuator to apply an actuating force to the piston. Related methodology is disclosed.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: September 21, 2021
    Assignee: Caterpillar Inc.
    Inventors: Scott B. Fiveland, Dana Ray Coldren
  • Patent number: 11118490
    Abstract: Operating a machine system for co-production of electrical power and filtered potable water includes operating an electrical generator by way of rotation of an engine output shaft to produce electrical power, and collecting water condensed from cooled treated exhaust from the engine for delivery to an outgoing water conduit. Operating the machine system further includes supplying electrical power produced by the electrical generator to an in situ electrical load, and to at least one ex situ electrical load such as a power grid. The in situ electrical load is produced by at least one of an exhaust conveyance device, an air conveyance device, or a water conveyance device in a water subsystem.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: September 14, 2021
    Assignee: Caterpillar Inc.
    Inventor: Dana Ray Coldren
  • Publication number: 20210231037
    Abstract: Operating a machine system for co-production of electrical power and filtered potable water includes operating an electrical generator by way of rotation of an engine output shaft to produce electrical power, and collecting water condensed from cooled treated exhaust from the engine for delivery to an outgoing water conduit. Operating the machine system further includes supplying electrical power produced by the electrical generator to an in situ electrical load, and to at least one ex situ electrical load such as a power grid. The in situ electrical load is produced by at least one of an exhaust conveyance device, an air conveyance device, or a water conveyance device in a water subsystem.
    Type: Application
    Filed: January 24, 2020
    Publication date: July 29, 2021
    Applicant: Caterpillar Inc.
    Inventor: Dana Ray Coldren
  • Publication number: 20200392892
    Abstract: An ignition system for an internal combustion engine includes an igniter having an igniter housing with a combustion prechamber formed therein, and a piston movable within the igniter housing to increase a pressure of an ignition charge of fuel and air within the combustion prechamber to an autoignition threshold. The ignition system includes a hydraulic actuator to apply an actuating force to the piston. Related methodology is disclosed.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 17, 2020
    Applicant: Caterpillar Inc.
    Inventors: Scott B. Fiveland, Dana Ray Coldren
  • Patent number: 10041447
    Abstract: A manifold for a pump is configured to connect to a jacket to form a reservoir and to connect to at least one pumping mechanism disposed within the reservoir. The manifold includes a first side including a first side surface configured to face the reservoir and a second side including a second side surface. The manifold also includes a bypass passage, at least one push rod guide bore extending through the first side surface and the second side surface, and a leakage passage fluidly connecting the at least one push rod guide bore to an outlet disposed outside the first side surface. The manifold further includes a discharge passage including at least one inlet disposed in the first side surface, and the at least one inlet is configured to receive fluid pumped by the at least one pumping mechanism.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: August 7, 2018
    Assignee: Caterpillar Inc.
    Inventors: Sunil Jefferey Bean, Joshua Wayne Steffen, Dana Ray Coldren, Cory Andrew Brown, Robert Michael Campion
  • Patent number: 10036383
    Abstract: A pump piston is disclosed. The pump piston may include a body having an actuating end, a pressurizing end opposite the actuating end, and an outer diameter that is greater at the pressurizing end than at the actuating end, wherein the outer diameter varies between the pressurizing end and the actuating end without increasing to form an outer diameter profile.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: July 31, 2018
    Assignee: Caterpillar Inc.
    Inventors: Alan Ray Stockner, Sana Mahmood, Joshua Steffen, Dana Ray Coldren
  • Patent number: 9926922
    Abstract: A barrel assembly for a pumping mechanism includes a first end, a second end opposite the first end, and a plunger bore configured to receive a plunger for sliding within the plunger bore. The barrel assembly also includes at least one inlet passage including at least one inlet extending through the first end and fluidly connected to the plunger bore to communicate fluid from the at least one inlet passage to the plunger bore. The barrel assembly further includes an outlet passage fluidly connected to the plunger bore and configured to receive fluid from the plunger bore, the plunger bore and the outlet passage forming separate openings in the second end of the barrel assembly.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: March 27, 2018
    Assignee: Caterpillar Inc.
    Inventors: Sunil Jefferey Bean, Joshua Wayne Steffen, Dana Ray Coldren, Robert Michael Campion
  • Patent number: 9695758
    Abstract: A fuel system is disclosed that is capable of operating in multiple combustion modes. A method is also disclosed of operating a dual fuel engine in conjunction with the fuel system. The method may include detecting a performance parameter of gaseous fuel in the fuel system. The method may also include selecting a combustion mode from a plurality of combustion modes based on the performance parameter. The method may further include injecting gaseous fuel and liquid fuel into at least one cylinder of the engine according to an injection timing corresponding to the selected combustion mode.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: July 4, 2017
    Assignee: Caterpillar, Inc.
    Inventors: Dana Ray Coldren, Joshua Wayne Steffen, Robert Michael Campion
  • Patent number: 9562497
    Abstract: A fuel injector is disclosed for use in an engine system. The fuel injector may have a body, a first piston slidingly disposed in the body and having a first pressure area, and a second piston slidingly disposed in the body and having a second pressure area. The fuel injector may also have a hydraulic coupling connecting the first and second pressure areas, and a piezo stack connected to move the first piston. The fuel injector may additionally have a valve needle configured to engage and be moved by the second piston. The first pressure area may be larger than the second pressure area.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: February 7, 2017
    Assignee: Caterpillar Inc.
    Inventor: Dana Ray Coldren
  • Publication number: 20160222949
    Abstract: A pumping mechanism includes a barrel assembly having a plunger bore. The plunger bore has a longitudinal axis. The pumping mechanism also includes a plunger configured to slide within the plunger bore parallel to the longitudinal axis. The pumping mechanism further includes a push rod separate from the plunger. The push rod is configured to move away from the plunger to be spaced from the plunger, and the push rod is further configured to move within the plunger bore to push the plunger.
    Type: Application
    Filed: January 30, 2015
    Publication date: August 4, 2016
    Applicant: CATERPILLAR INC.
    Inventors: Joshua Wayne STEFFEN, Dana Ray COLDREN, Alan Ray STOCKNER, Sana MAHMOOD, Robert Michael CAMPION, Sunil Jefferey BEAN
  • Publication number: 20160222961
    Abstract: A barrel assembly for a pumping mechanism includes a first end, a second end opposite the first end, and a plunger bore configured to receive a plunger for sliding within the plunger bore. The barrel assembly also includes at least one inlet passage including at least one inlet extending through the first end and fluidly connected to the plunger bore to communicate fluid from the at least one inlet passage to the plunger bore. The barrel assembly further includes an outlet passage fluidly connected to the plunger bore and configured to receive fluid from the plunger bore, the plunger bore and the outlet passage forming separate openings in the second end of the barrel assembly.
    Type: Application
    Filed: January 30, 2015
    Publication date: August 4, 2016
    Applicant: Caterpillar Inc.
    Inventors: Sunil Jefferey BEAN, Joshua Wayne STEFFEN, Dana Ray COLDREN, Robert Michael CAMPION
  • Publication number: 20160222933
    Abstract: A manifold for a pump is configured to connect to a jacket to form a reservoir and to connect to at least one pumping mechanism disposed within the reservoir. The manifold includes a first side including a first side surface configured to face the reservoir and a second side including a second side surface. The manifold also includes a bypass passage, at least one push rod guide bore extending through the first side surface and the second side surface, and a leakage passage fluidly connecting the at least one push rod guide bore to an outlet disposed outside the first side surface. The manifold further includes a discharge passage including at least one inlet disposed in the first side surface, and the at least one inlet is configured to receive fluid pumped by the at least one pumping mechanism.
    Type: Application
    Filed: January 30, 2015
    Publication date: August 4, 2016
    Applicant: Caterpillar Inc.
    Inventors: Sunil Jefferey BEAN, Joshua Wayne STEFFEN, Dana Ray COLDREN, Cory Andrew BROWN, Robert Michael CAMPION