Patents Assigned to Liebherr Machines Bulle SA
  • Patent number: 10988837
    Abstract: The present application relates to a method for producing at least one component for a hydraulic displacement unit, wherein the method is characterized by the steps: prefabrication of a blank component for the at least one component, wherein at least one defined surface region of the blank component is fabricated intentionally with oversize, surface-hardening of the blank component, and final forming of the component from the hardened blank component by removal of the excessive material at the at least one defined surface region fabricated with oversize.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: April 27, 2021
    Assignee: Liebherr Machines Bulle SA
    Inventors: Jose Bapst, Carsten Kollmeyer, Erwin Feusi, Gabriel Meckl
  • Patent number: 10960459
    Abstract: The present invention relates to a method of manufacturing a drum of an axial piston machine by machining a cylindrical round metal, with the machining comprising a forging and with at least one structural element of the drum being produced or prefabricated by the forging.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: March 30, 2021
    Assignee: Liebherr Machines Bulle SA
    Inventor: Lennard Geissler
  • Patent number: 10837467
    Abstract: The present invention relates to a hydraulic apparatus, in particular to a hydraulic valve or to a hydraulic regulator, having a housing, at least one piston axially displaceably supported in a housing bore, and a respective at least one compression spring acting on the at least one piston, wherein at least one externally accessible regulating screw is adjustable within the housing bore to set the preload of the compression spring in the axial direction, wherein the adjustment distance of the at least one regulating screw is divided into at least two adjustment ranges and the torque to be applied for the adjustment of the regulating screw is larger in a second adjustment range than in a first adjustment range.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: November 17, 2020
    Assignee: LIEBHERR MACHINES BULLE SA
    Inventors: Lennard Geissler, Patrick Wohlhauser
  • Patent number: 10662857
    Abstract: The present invention relates to a liquid-cooled internal combustion engine comprising an engine block, which includes a plurality of cylinders, and cylinder heads closing the cylinders, wherein each cylinder is surrounded by a respective cooling liner and each cylinder head has provided therein at least one separate cooling chamber connected to the cooling liner of the associated cylinder via at least one transition channel, wherein the transition channels of at least two cylinders are interconnected via a pressure compensation chamber.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: May 26, 2020
    Assignees: Liebherr Machines Bulle SA, Deere & Company
    Inventors: Domenico Palmisani, Raghavendra Hedge, Zhi Li, Michael Sullivan
  • Patent number: 10260412
    Abstract: The present disclosure relates to a four-stroke reciprocating piston engine in a V configuration having 20 cylinders, having a counter-clockwise direction of rotation, having an ignition timing control which fires the cylinders A1 to A10 and B1 to B10 in at least one of the following firing sequences, wherein the direction of rotation and the cylinder numbering are defined in accordance with DIN ISO 1204: a) A1-B3-A4-B9-A8-B5-A2-B1-A5-B4-A10-B8-A7-B2-A3-B6-A9-B10-A6-B7 b) A1-B3-A4-B9-A8-B6-A2-B1-A5-B4-A10-B8-A7-B2-A3-B5-A9-B10-A6-B7 c) A1-B2-A5-B8-A9-B4-A3-B1-A7-B6-A10-B9-A6-B3-A2-B7-A8-B10-A4-B5 d) A1-B2-A5-B8-A9-B4-A3-B1-A7-B5-A10-B9-A6-B3-A2-B7-A8-B10-A4-B6 e) A1-B2-A6-B8-A9-B4-A3-B1-A7-B6-A10-B9-A5-B3-A2-B7-A8-B10-A4-B5 f) A1-B2-A6-B8-A9-B4-A3-B1-A7-B5-A10-B9-A5-B3-A2-B7-A8-B10-A4-B6 g) A1-B3-A4-B9-A8-B5-A2-B1-A6-B4-A10-B8-A7-B2-A3-B6-A9-B10-A5-B7 h) A1-B3-A4-B9-A8-B6-A2-B1-A6-B4-A10-B8-A7-B2-A3-B5-A9-B10-A5-B7 i) A1-B2-A4-B8-A2-B6-A8-B10-A6-B7-A10-B9-A7-B3-A9-B5-A3-B1-A5-B4 j) A1-B4-A3-B9-A7-
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: April 16, 2019
    Assignee: Liebherr Machines Bulle SA
    Inventor: Christoph Henninger
  • Patent number: 10227912
    Abstract: A gas engine includes a mixing unit for mixing two gas components, which are fed to one or more combustion chambers of the gas engine, in particular for mixing fuel gas and charge air, as well as two compressors. By way of the compressors, the two gas components are separately compressed before the two gas components are fed to the mixing unit. Both compressors are driven by a turbine arranged in the exhaust gas system of the gas engine.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: March 12, 2019
    Assignee: Liebherr-Machines Bulle SA
    Inventor: Thomas Gebhardt
  • Patent number: 10082074
    Abstract: The present disclosure relates to a four-stroke reciprocating piston engine in a V configuration having 16 cylinders, having a counter-clockwise direction of rotation, having an ignition timing control which fires the cylinders A1 to A8 and B1 to B8 in one of the following firing sequences, wherein the direction of rotation and the cylinder numbering are defined in accordance with DIN ISO 1204: a) A1-B2-A5-B4-A7-B8-A3-A8-B5-A6-B7-A2-B3-A4-B1-B6 b) A1-B2-A5-A2-B3-A4-B1-A8-B5-A6-B7-B4-A7-B8-A3-B6 c) A1-B4-A3-B2-A7-B6-A5-B8-B3-A8-B7-A4-B5-A2-B1-A6 d) A1-B4-A3-B2-B5-A2-B1-A6-B3-A8-B7-A4-A7-B6-A5-B8 e) A1-B2-A6-B4-A8-A4-B1-A7-B6-A5-B8-A2-B3-B7-A3-B5 f) A1-B2-A6-B4-A8-B7-A3-A7-B6-A5-B8-A2-B3-A4-B1-B5 g) A1-B2-A6-A2-B3-A4-B1-A7-B6-A5-B8-B4-A8-B7-A3-B5 h) A1-B4-A3-B2-A8-B5-A6-B7-B3-A7-B8-A4-B6-A2-B1-A5 i) A1-B4-B8-A4-B6-A2-B1-A5-B3-A7-A3-B2-A8-B5-A6-B7 j) A1-B4-A3-B2-B6-A2-B1-A5-B3-A7-B8-A4-A8-B5-A6-B7 k) A1-B2-A6-B5-A8-A5-B1-A7-B6-A4-B8-A2-B3-B7-A3-B4 l) A1-B2-A6-B5-A8-B7-A3-A7-B6-A4-B8-A2-B3-A5-B1-B4
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: September 25, 2018
    Assignee: Liebherr-Machines Bulle SA
    Inventors: Christoph Henninger, Iulian Vasile, Simon Heintz, Martin Stadelmann
  • Patent number: 9850842
    Abstract: A controller for a common-rail injection system includes a plurality of fuel injectors, a common fuel supply line for the fuel injectors, a high-pressure pump for supplying the common fuel supply line with fuel, and a pressure sensor for determining the pressure in the common fuel supply line. A determination unit evaluates data of the pressure sensor and, from the pressure drop caused by an injection in the common fuel supply line, determines the fuel quantity actually injected during this injection or a value derived therefrom. An adaption unit uses the results of the determination unit in order to adapt the actuation of the fuel injectors. The determination unit carries out at least one test injection, and the actually injected fuel quantity or a value derived therefrom is effected by way of the test injection or injections.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: December 26, 2017
    Assignee: Liebherr Machines Bulle SA
    Inventors: Konrad Christ, Francois Masson, Richard Pirkl
  • Patent number: 9765670
    Abstract: An engine exhaust system comprising an exhaust pipe routing an exhaust flow through a bend, and being in fluid communication with a catalyst downstream of the bend. An injector mounted to the exterior of the exhaust pipe, the injector with a tip disposed within the exhaust pipe at the bend, for injecting liquid reductant into the exhaust pipe. A shield member mounted in the exhaust pipe, the shield member comprising a generally tubular or frustoconical structure having a proximal and a distal end, the proximal end being disposed such that the injection tip is inside the shield member, the distal end being disposed towards a centerline of the exhaust pipe. A vane mounted in relation to the shield member, the vane being arranged to direct a proportion of exhaust flow from upstream of the bend in a substantially arcuate path into the proximal end of the shield member.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: September 19, 2017
    Assignee: Liebherr Machines Bulle SA
    Inventors: Duncan J Arrowsmith, Diego Simón Davila, Brian G Bates, Nicolas Belle, Nicolas Talavera, Regis Vonarb
  • Patent number: 9593774
    Abstract: A piston for an axial machine includes a piston body having a cavity that is closed in a pressure-tight way. The cavity is divided into a plurality of chambers, arranged one beside the other in cross-section.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: March 14, 2017
    Assignee: Liebherr Machines Bulle SA
    Inventors: Mario Baeriswyl, Erwin Feusi
  • Publication number: 20160208679
    Abstract: A gas engine includes a mixing unit for mixing two gas components, which are fed to one or more combustion chambers of the gas engine, in particular for mixing fuel gas and charge air, as well as two compressors. By way of the compressors, the two gas components are separately compressed before the two gas components are fed to the mixing unit. Both compressors are driven by a turbine arranged in the exhaust gas system of the gas engine.
    Type: Application
    Filed: July 3, 2014
    Publication date: July 21, 2016
    Applicant: LIEBHERR-MACHINES BULLE SA
    Inventor: TBD Gebhardt
  • Patent number: 9334823
    Abstract: A controller for an injection system having a plurality of fuel injectors includes a map controller. From a desired injection value, the map controller generates a control value for actuating a fuel injector with reference to a specified map. A determination unit determines the actual injection value for at least one injection made, and an adaption unit uses results from the determination unit in order to adapt actuation of the fuel injectors. The adaption unit determines an adaption value for injector actuation from the at least one actual injection value. In engine operation, the adaption unit receives the control values generated by the map controller as input. From this input, the adaption unit generates adapted actuation values as output by applying a mathematical function to the control values generated by the map controller. The at least one adaption value is included in the first mathematical function as parameter.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: May 10, 2016
    Assignee: Liebherr Machines Bulle SA
    Inventors: Konrad Christ, Francois Masson, Richard Pirkl
  • Patent number: 8939128
    Abstract: The present invention shows a high-pressure injector having the following assemblies: an injector unit (1), a drive unit (2) for driving the injector unit (1), preferably a high-pressure storage unit (3) for supplying the injector unit (1) with fuel, and a high-pressure connection (4). Provision is made in this respect that the high-pressure injector has a housing (5) in which a plurality of the named assemblies are arranged behind one another in the longitudinal direction of the injector, wherein the housing (5) completely envelops at least one of the named assemblies, in particular the drive unit (2) and/or the high-pressure storage unit (3). The high-pressure injector with the injector unit can be used in all types of internal combustion engines, preferably in diesel engines.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: January 27, 2015
    Assignee: Liebherr Machines Bulle SA
    Inventors: Richard Pirkl, Edgar Bignion, Wolfram Klemp
  • Publication number: 20140311457
    Abstract: A controller for an injection system having a plurality of fuel injectors includes a map controller. From a desired injection value, the map controller generates a control value for actuating a fuel injector with reference to a specified map. A determination unit determines the actual injection value for at least one injection made, and an adaption unit uses results from the determination unit in order to adapt actuation of the fuel injectors. The adaption unit determines an adaption value for injector actuation from the at least one actual injection value. In engine operation, the adaption unit receives the control values generated by the map controller as input. From this input, the adaption unit generates adapted actuation values as output by applying a mathematical function to the control values generated by the map controller. The at least one adaption value is included in the first mathematical function as parameter.
    Type: Application
    Filed: April 18, 2014
    Publication date: October 23, 2014
    Applicant: Liebherr Machines Bulle SA
    Inventors: Konrad CHRIST, Francois MASSON, Richard PIRKL
  • Publication number: 20140311453
    Abstract: A controller for a common-rail injection system includes a plurality of fuel injectors, a common fuel supply line for the fuel injectors, a high-pressure pump for supplying the common fuel supply line with fuel, and a pressure sensor for determining the pressure in the common fuel supply line. A determination unit evaluates data of the pressure sensor and, from the pressure drop caused by an injection in the common fuel supply line, determines the fuel quantity actually injected during this injection or a value derived therefrom. An adaption unit uses the results of the determination unit in order to adapt the actuation of the fuel injectors. The determination unit carries out at least one test injection, and the actually injected fuel quantity or a value derived therefrom is effected by way of the test injection or injections.
    Type: Application
    Filed: April 18, 2014
    Publication date: October 23, 2014
    Applicant: Liebherr Machines Bulle SA
    Inventors: Konrad CHRIST, Francois MASSON, Richard PIRKL
  • Publication number: 20140305388
    Abstract: A drive system has an internal combustion machine that drives a hydraulic system and/or that includes a controller actuating the internal combustion machine such that, with transient load moment, the internal combustion machine operates at a constant set speed. The drive system includes a flywheel accumulator that is connected with the output shaft of the internal combustion machine via a step-up gear unit.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 16, 2014
    Applicant: Liebherr Machines Bulle SA
    Inventors: Benoît GAY, Michael DEEKEN, Marcus QUASTHOFF, Bouzid SEBA, Damien DUJON
  • Publication number: 20140283681
    Abstract: A piston for an axial machine includes a piston body having a cavity that is closed in a pressure-tight way. The cavity is divided into a plurality of chambers, arranged one beside the other in cross-section.
    Type: Application
    Filed: March 24, 2014
    Publication date: September 25, 2014
    Applicant: LIEBHERR MACHINES BULLE SA
    Inventors: Mario BAERISWYL, Erwin FEUSI
  • Publication number: 20140170031
    Abstract: An exhaust gas treatment system for the purpose of reducing the harmful substances present in the exhaust gas of combustion engines, particularly diesel engines, has a gas- and liquid-tight housing with at least one inlet and at least one outlet. Gas guide elements are arranged in the housing, and the housing encloses at least one chamber in which is contained a catalyst material and/or a particle filter material. The gas guide elements have spark-catching and/or spark-extinguishing elements.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 19, 2014
    Applicant: Liebherr Machines Bulle SA
    Inventors: Regis VONARB, Thorben Philipp, Yves HOHL, Phillip Federle
  • Patent number: D805557
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: December 19, 2017
    Assignee: Liebherr-Machines Bulle SA
    Inventors: Van No Lanevongsa, Marko Del Aguila, Lorenz Jonas
  • Patent number: D914061
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: March 23, 2021
    Assignee: Liebherr Machines Bulle SA
    Inventors: Marko Del Aguila, Didier Angeloz, Jonas Lorenz