Patents Assigned to Caterpillar Inc
  • Publication number: 20180328240
    Abstract: An early exhaust valve opening (EEVO) module increases a no-load engine speed so an engine can smoothly transition to driving a load when necessary. The EEVO module includes a drive piston engaging an injector rocker and a driven piston engaging an exhaust rocker. The pistons are fluidly connected by a activation fluid passage so that the drive piston compresses air in the passage when an injector cam rotates the injector rocker and causes movement of the driven gear and the exhaust rocker to open an exhaust valve to release exhaust energy during a piston expansion stroke to limit the energy transferred to a crankshaft. A low pressure timing valve may drain pressurized fluid from the passage during an initial portion of the movement of the drive piston so driven piston does not move to open the exhaust valve until a desired amount of energy has been transferred to the crankshaft.
    Type: Application
    Filed: May 12, 2017
    Publication date: November 15, 2018
    Applicant: Caterpillar Inc.
    Inventors: Craig Phillip Hittle, David Andrew Pierpont
  • Publication number: 20180326935
    Abstract: A radiator guard assembly for a machine includes an aperture plate. The radiator guard assembly also includes a first side sheet extending perpendicularly with respect to the aperture plate. The radiator guard assembly further includes a second side sheet extending perpendicularly with respect to the aperture plate. The second side sheet is spaced apart from the first side sheet. The radiator guard assembly includes a mounting structure coupled to each of the first and second side sheets. The mounting structure includes a base member coupled to the respective side sheet. The mounting structure also includes a first plate extending from the base member. The first plate defines a first aperture. The mounting structure further includes a second plate extending from the base member. The second plate is parallel to first plate. Further, the second plate defines a second aperture that is coaxial with the first aperture.
    Type: Application
    Filed: May 11, 2017
    Publication date: November 15, 2018
    Applicant: Caterpillar Inc.
    Inventors: Kevin Michael Miller, Rob Alan Sensabaugh, Vinayak Ramanath Ugru, Robert Stephen Comer
  • Patent number: 10128706
    Abstract: A rotary electric machine includes a stator having an open slot configuration and a plurality of stator poles with a coil positioned about each stator pole. Each coil has a plurality of electrically conductive wires defining a group of wires and the group of wires is wrapped generally around a stator pole to define a plurality of turns. At least a portion of the group of wires is twisted, and the portion of the group of wires has between approximately 1 and 5 twists per turn. A method of fabricating a stator assembly is also disclosed.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: November 13, 2018
    Assignee: Caterpillar Inc.
    Inventor: Rodwan T. Adra
  • Patent number: 10125471
    Abstract: A scarifier board comprises a rectangular attachment portion defining a width, a height and a thickness and the attachment portion includes a front face and a back face, and a first plurality of mounting apertures extend through the front face and the back face. The board also includes a working portion defining a plurality of anti-rotation grooves and a plurality of working zones therebetween having a wear resistant material, and the working portion includes a strip of wear resistant material disposed immediately below the attachment portion.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: November 13, 2018
    Assignee: Caterpillar Inc.
    Inventors: Thomas Marshall Congdon, David Bruno Parzynski, Jr.
  • Patent number: 10125863
    Abstract: A hydraulic circuit supplies pressurized hydraulic fluid to and from a torque converter that is operatively associated with a lockup clutch. The torque converter is disposed upstream of an outlet regulator that maintains a predetermined pressure in the torque converter. Power transmission in a powertrain can be directed through the torque converter during a hydrodynamic mode and can be directed through the lockup clutch during lockup mode. To switch between the hydrodynamic mode and the lockup mode, the hydraulic circuit includes a diverter valve to selectively direct pressurized hydraulic fluid between the torque converter and the lockup clutch. When operating in the lockup mode, the diverter valve further diverts hydraulic fluid discharged for the torque converter to bypass the outlet regulator disposed downstream of the torque converter.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: November 13, 2018
    Assignee: Caterpillar Inc.
    Inventors: James Boston, Eric J. Manning, Benjamin D. Nauman
  • Patent number: 10124811
    Abstract: A machine may include an engine, a traction device, a continuously variable transmission (CVT) connecting the engine to the traction device, an operator input device outputting engine output command signals input by an operator, an engine speed sensor monitoring an engine output speed, and an electronic control module (ECM). The ECM controls a machine output of the machine by executing a transmission output control routine using transmission output parameters as feedback when transmission output parameter sensor signals are reliable. The ECM controls the machine output by executing a target engine speed control routine using an engine output speed sensor signals as feedback when the transmission output parameter sensor signals are nor reliable. In the target engine speed control routine, the ECM determines a CVT transmission ratio that will cause the CVT to apply a load to the engine that will cause the engine to run at the target engine speed.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: November 13, 2018
    Assignee: Caterpillar Inc.
    Inventor: Brian Lister
  • Patent number: 10125470
    Abstract: An electric drive machine includes a power module configured to provide power including a battery and an engine coupled to a folding heat exchange device. The electric drive machine may also include a drive module configured with one or more motors and positioned over a track roller frame. The electric drive machine may also include a ripping module configured with one or more ripping devices to rip encountered material. The electric drive machine may also include a hydraulic module with one or more devices in a region to cut or rip the encountered material.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: November 13, 2018
    Assignee: Caterpillar Inc.
    Inventors: Matt Brauer, Jacob Carl Wyss
  • Publication number: 20180319445
    Abstract: A track chain member comprises a shoe member, and a first rail member extending from the shoe member, wherein the first rail member defines a track chain traveling direction and a lateral direction generally perpendicular to track chain traveling direction, a first support surface extending generally in both the track chain traveling direction and the lateral direction defining an outer lateral extremity, and a first crest shaped member disposed laterally adjacent the outer lateral extremity of the first support surface.
    Type: Application
    Filed: April 3, 2018
    Publication date: November 8, 2018
    Applicant: Caterpillar Inc.
    Inventors: Gustavo Acosta, David Jennings Hakes, Benoit Abello, Benjamin Isaac Jones, Udo Nott
  • Publication number: 20180319447
    Abstract: A pin retention device comprises a fastener defining a longitudinal axis, a first end and a second end along the longitudinal axis, a head at the first end and a threaded portion at the second end, a tubular spacer defining a thru-hole configured to receive the fastener, and a nut defining a threaded hold configured to mate with the threaded portion of the fastener.
    Type: Application
    Filed: April 3, 2018
    Publication date: November 8, 2018
    Applicant: Caterpillar Inc.
    Inventor: Jose Gerardo De La Torre
  • Publication number: 20180320337
    Abstract: A slewing assist system for a machine having an upper body structure supported on an undercarriage structure includes a central rotation member. The central rotation member is rotatably coupled to undercarriage structure. A slip member is concentrically coupled to central rotation member and allows a relative rotational motion. At least one pin is coupled to slip member and engages slip member in expanded position such that central rotation member and slip member rotate together. A lever arm is fixedly coupled to slip member. A first end and a second end of an actuating element are coupled to lever arm and upper structure, respectively. The slewing assist system provides additional slewing assist to upper body structure by engaging slip member and central rotation member through pin. The slewing assist system assists in a first and a second rotational direction by extending and retracting second end of actuating element, respectively.
    Type: Application
    Filed: May 4, 2017
    Publication date: November 8, 2018
    Applicant: Caterpillar Inc.
    Inventor: Stephen Platt Rutherford
  • Publication number: 20180320244
    Abstract: A method for production of a track bushing for an undercarriage assembly is provided. The method includes carburizing a base material of the track bushing in less than 100 minutes and to a depth of less than 1000 microns. The base material is medium carbon steel. The method includes hardening the base material. The method includes tempering the base material.
    Type: Application
    Filed: May 5, 2017
    Publication date: November 8, 2018
    Applicant: Caterpillar Inc.
    Inventors: Chandrasen Rameshlal Rathod, Tao Lin
  • Publication number: 20180319446
    Abstract: A track chain assembly comprises a plurality of interlocking track chain members wherein each track chain member defines a track chain traveling direction, a lateral direction perpendicular to the track chain traveling direction, and includes a shoe member defining a shoe width along the lateral direction; and a first track pad member defining a first track pad maximum width along the lateral direction, and a second track pad member defining a second maximum track pad width along the lateral direction, wherein a ratio of either track pad maximum widths to the shoe member width ranges from 1:4 to 3:4.
    Type: Application
    Filed: April 3, 2018
    Publication date: November 8, 2018
    Applicant: Caterpillar Inc.
    Inventors: Gustavo Acosta, David Jennings Hakes, Benoit Abello, Benjamin Isaac Jones, Udo Nott
  • Publication number: 20180320340
    Abstract: A machine orientation display may be displayed by an operator display device in an operator station of a machine. The machine orientation display may include a field area, a horizontal reference displayed on the field area, a machine orientation indicator displayed on the field area and positioned and oriented relative to the horizontal reference to graphically indicate a machine orientation of the machine relative to a work surface on which the machine is disposed. The machine orientation display may further include an implement orientation indicator displayed on the field area and positioned and oriented relative to the horizontal reference and the machine orientation indicator to graphically indicate an implement orientation of an implement of the machine. The implement is movable relative to a machine body of the machine and to the work surface.
    Type: Application
    Filed: May 5, 2017
    Publication date: November 8, 2018
    Applicant: Caterpillar Inc.
    Inventor: Timothy A. Evans
  • Publication number: 20180319448
    Abstract: A track chain member comprises a shoe member defining a track chain traveling direction and a lateral direction perpendicular to the track chain traveling direction and a first rib defining a first concave radial portion.
    Type: Application
    Filed: April 3, 2018
    Publication date: November 8, 2018
    Applicant: Caterpillar Inc.
    Inventors: Gustavo Acosta, David Jennings Hakes, Benoit Abello, Benjamin Isaac Jones
  • Publication number: 20180319449
    Abstract: A track chain member comprising a shoe member defining a track chain traveling direction and a lateral direction, the shoe member further defining a first lateral end, a second lateral end, and a ground engaging surface spanning from the one end to the other end; wherein the shoe member further defines a first side void proximate the first lateral end, a second side void proximate the second lateral end, and the first side void terminates a first predetermined distance from the first lateral end and the second side void terminates a second predetermined distance from the second lateral end.
    Type: Application
    Filed: April 3, 2018
    Publication date: November 8, 2018
    Applicant: Caterpillar Inc.
    Inventors: Gustavo Acosta, David Jennings Hakes, Benoit Abello, Benjamin Isaac Jones
  • Patent number: 10119482
    Abstract: A method to ignite a fuel in an engine of an engine system is disclosed. The method includes introducing a mixture of air and a compound into a main combustion chamber of the engine. The compound includes a peroxide group. Next, the method includes controlling, by a controller, one or more parameters of the engine system to attain a temperature in the main combustion chamber within a temperature range. The compound decomposes into a radical within the temperature range. The method further includes injecting, by an injector, the fuel into the main combustion chamber upon the decomposition of the compound into the radical, causing an interaction of the fuel with the radical, thereby igniting the fuel.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: November 6, 2018
    Assignee: Caterpillar Inc.
    Inventor: Charlie Chang-Won Kim
  • Patent number: 10119252
    Abstract: A tool adapter for attaching a tool to a work implement using a retaining mechanism that includes a body that defines a pocket that defines an abutment or reinforcement surface. The body may include a nose portion that is configured to facilitate the attachment of a tool, a first leg, a second leg, a throat portion that connects the legs and nose portion together, wherein at least one leg defines an aperture that is configured to receive a retaining mechanism. The first and second legs and the throat portion also define a slot that includes a closed end and an open end that defines a direction of assembly onto a work implement and the minimum distance measured from the abutment surface to the throat measured in the direction of assembly is less than the minimum distance from the aperture to the throat measured in the direction of assembly.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: November 6, 2018
    Assignee: Caterpillar Inc.
    Inventor: Patrick Simon Campomanes
  • Patent number: 10119455
    Abstract: A method for thermostat failure detection in an engine cooling system is provided. The engine cooling system includes a coolant pump and a thermostat for providing a coolant flow between an engine and a radiator. The method includes determining one or more engine parameters. Further, a pressure difference between a coolant pump inlet pressure and a coolant pump outlet pressure is determined corresponding to the one or more engine parameters. The thermostat failure is detected when the determined pressure difference is outside a predefined range of pressure change defined corresponding to the determined one or more engine parameters.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: November 6, 2018
    Assignee: Caterpillar Inc.
    Inventor: Jeffrey Joseph Speichinger
  • Patent number: 10119456
    Abstract: A ducted combustion system includes a combustion chamber and a fuel injector in fluid connection with the combustion chamber, which includes an orifice opening from an injector tip of the fuel injector, the orifice injecting fuel into the combustion chamber as a fuel jet, the fuel jet flowing, within the combustion chamber, in a fuel flow direction. The system includes at least one duct disposed within the combustion chamber, the at least one duct being disposed such that the fuel jet, at least partially, enters one of the at least one ducts upon being injected into the combustion chamber. The at least one duct may be configured for having a flow field air stream within the duct, prior to entrance of the fuel jet, the flow field air stream having a flow direction that is substantially similar to the fuel flow direction.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: November 6, 2018
    Assignee: Caterpillar Inc.
    Inventor: Russell P. Fitzgerald
  • Patent number: D833380
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: November 13, 2018
    Assignee: Caterpillar Inc.
    Inventor: Kevin Martin