Patents Assigned to Liebherr Machines Bulle SA
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Patent number: 12188399Abstract: The invention relates to an engine having prechamber ignition, in particular a gas engine, that comprises a main combustion space in a cylinder of the engine for combusting an air-fuel mixture and a prechamber having an ignition device arranged therein and a fuel injector arranged therein, wherein the prechamber has at least one transfer port that fluidically connects the prechamber to the main combustion space. The engine is characterized in that the fuel injector arranged in the prechamber is the only fuel injector via which fuel can be introduced into the associated main combustion space.Type: GrantFiled: December 20, 2023Date of Patent: January 7, 2025Assignee: Liebherr Machines Bulle SAInventors: Bouzid Seba, Ulrich Weiss, Bakir Puran, Roberto Andreutti
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Patent number: 12115478Abstract: The invention relates to an aerosol separator for separating aerosols in a blow-by gas, which comprises at least one feed opening for feeding a blow-by gas provided with aerosols, an outlet opening for discharging a blow-by gas cleaned of aerosols, at least one outflow opening for releasing aerosols removed from the blow-by gas, and which is arranged between a flow path of the at least one feed opening and the outlet opening, and a plurality of projections for configuring the flow path running from the at least one feed opening to the outflow opening in a meandering manner, in order to decelerate the blow-by gas which enters the feed opening and which is provided with aerosols, in terms of its flow rate. The separator is characterized in that the projections in their end region, around which blow-by gas flows, have a portion with increasing projection width.Type: GrantFiled: June 1, 2023Date of Patent: October 15, 2024Assignees: Liebherr Machines Bulle SA, Deere & CompanyInventors: Zhi Li, Domenico Palmisani, Kyle D. Redfern
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Patent number: 12092015Abstract: The invention relates to an engine having prechamber ignition, in particular a gas engine, that comprises a main combustion space in a cylinder of the engine for combusting an air-fuel mixture and a prechamber having an ignition device arranged therein and a fuel injector arranged therein, wherein the prechamber has at least one transfer port that fluidically connects the prechamber to the main combustion space. The engine is characterized in that the fuel injector arranged in the prechamber is the only fuel injector via which fuel can be introduced into the associated main combustion space.Type: GrantFiled: May 23, 2023Date of Patent: September 17, 2024Assignee: Liebherr Machines Bulle SAInventors: Bouzid Seba, Ulrich Weiss, Bakir Puran, Roberto Andreutti
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Patent number: 12085011Abstract: The disclosure relates to a method for operating a supercharged internal combustion engine having at least one cylinder group with a number n of combustion chambers, wherein, during a first operating state, all n combustion chambers are supplied with combustion air via a primary charge air path and, during a second operating state, only a portion of the n combustion chambers are supplied with combustion air from the primary charge air path and another portion of the n combustion chambers are supplied with combustion air from a separate compressed air reservoir.Type: GrantFiled: November 30, 2022Date of Patent: September 10, 2024Assignee: LIEBHERR MACHINES BULLE SAInventors: Bouzid Seba, Michael-Alexandre Baert, Sandro Silvestrini, Alix Noca
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Patent number: 12078165Abstract: The invention relates to an axial piston machine having a swash plate, a drive shaft having a driving mechanism, one or more driving mechanism pivots displaceable therein and whose piston stroke can be set by the swash plate, a mechanical adjustment unit for changing the pivot angle of the swash plate, and an externally controllable control valve. The control valve has a valve housing having a control displaceable control piston, with the adjustment device being hydraulically actuable by the control valve. An adjustment chamber of the control valve is connectable in dependence on the switched state of the control valve to a high pressure inlet or to a low pressure inlet for the hydraulic pressurization of the adjustment device via a setting pressure connection radially extending through the control piston.Type: GrantFiled: September 30, 2021Date of Patent: September 3, 2024Assignee: Liebherr Machines Bulle SAInventor: Patrick Wohlhauser
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Patent number: 12025312Abstract: The invention relates to an engine having at least two combustion chambers, a shared high-pressure fuel storage tank for holding fuel gas available as pressurized gas, and means for direct injection of the fuel gas from the high-pressure fuel storage tank into the combustion chambers, wherein it is possible to provide the fuel gas in the high-pressure fuel storage tank from a primary tank, wherein it is possible to withdraw the fuel gas from the primary tank and/or to generate it from a fuel withdrawn from the primary tank along a conversion path, and a gas buffer storage tank connected to the high-pressure fuel storage tank discharges fuel gas from the high-pressure fuel storage tank into the gas buffer storage tank, and the gas buffer storage tank is further connected via a separate fuel gas path to the air intake section of the gas combustion engine.Type: GrantFiled: March 15, 2023Date of Patent: July 2, 2024Assignee: LIEBHERR MACHINES BULLE SAInventors: Bouzid Seba, Michael-Alexandre Baert, Alix Noca
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Patent number: 12006895Abstract: The invention relates to a system for supplying a gaseous fuel that comprises a low temperature tank for receiving the fuel in its liquid aggregate state achieved by cooling and comprises a rail that is fluidically connected to at least one injector device for discharging gaseous fuel into a combustion space. The system is characterized in that it has a pressure store that is configured to receive gaseous fuel and that is fluidically connectable to both the low temperature tank and the rail to buffer fuel coming from the low temperature tank and to supply it to the rail.Type: GrantFiled: June 12, 2023Date of Patent: June 11, 2024Assignee: LIEBHERR MACHINES BULLE SAInventors: Bouzid Seba, Ulrich Weiss
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Patent number: 12006862Abstract: The disclosure relates to a fuel supply device for supplying a fuel to an internal combustion engine comprising: a fuel store for storing a primary fuel; and at least two parallel fuel supply paths that are connected to the fuel store, on the one hand, and to the internal combustion engine, on the other hand, wherein the primary fuel can be supplied from the fuel store to the internal combustion engine by means of the first fuel supply path for the purpose of combustion, and the second fuel supply path has at least one reforming device that reforms the primary fuel supplied from the fuel tank into a secondary fuel, and to supply at least a portion of the produced secondary fuel to the internal combustion engine for the purpose of combustion.Type: GrantFiled: February 22, 2022Date of Patent: June 11, 2024Assignee: LIEBHERR MACHINES BULLE SAInventors: Bouzid Seba, Ulrich Weiss, Pierre Gobin
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Patent number: 11920545Abstract: An internal combustion engine has an intake manifold injection, at least two combustion chambers, at least one central rail for supplying fuel for the intake manifold injection, and at least one air distributor for supplying air to the individual combustion chambers. The central rail is attached to the air distributor, or the central rail and the air distributor are formed as an integral component.Type: GrantFiled: July 11, 2022Date of Patent: March 5, 2024Assignee: Liebherr Machines Bulle SAInventors: Bouzid Seba, Bakir Puran, Olivier Fragnière
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Patent number: 11885284Abstract: The invention relates to a fuel injection device for an internal combustion engine comprising at least one central rail which is in fluid communication with at least one primary fuel tank, characterized in that at least one auxiliary fuel pressure accumulator is provided, the internal volume of which is in communication with the central rail via at least one control valve in order to temporarily provide a simultaneous fuel supply to the central rail from the auxiliary fuel pressure accumulator and the primary fuel tank.Type: GrantFiled: July 11, 2022Date of Patent: January 30, 2024Assignee: Liebherr Machines Bulle SAInventors: Bouzid Seba, Bakir Puran
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Patent number: 11828276Abstract: The present disclosure relates to an adjusting device for adjusting the swash plate of an axial piston machine comprising an adjusting piston, which is connected to the swash plate of the axial piston machine via an adjusting lever, and a regulator for adjusting the adjusting pressure acting on the adjusting piston in dependence on a control force acting on a control piston of the regulator, wherein the adjusting piston is connected to the control piston via a feedback spring. In accordance with the present disclosure the feedback spring is at least partly received in a pot-shaped recess of the control piston.Type: GrantFiled: November 13, 2018Date of Patent: November 28, 2023Assignee: LIEBHERR MACHINES BULLE SAInventor: Patrick Wohlhauser
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Patent number: 11788494Abstract: The invention relates to a system for supplying a gaseous fuel that comprises a low temperature tank for receiving the fuel in its liquid aggregate state achieved by cooling and comprises a rail that is fluidically connected to at least one injector device for discharging gaseous fuel into a combustion space. The system is characterized in that it has a pressure store that is configured to receive gaseous fuel and that is fluidically connectable to both the low temperature tank and the rail to buffer fuel coming from the low temperature tank and to supply it to the rail.Type: GrantFiled: May 28, 2021Date of Patent: October 17, 2023Assignee: LIEBHERR MACHINES BULLE SAInventors: Bouzid Seba, Ulrich Weiss
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Patent number: 11717779Abstract: The invention relates to an aerosol separator for separating aerosols in a blow-by gas, which comprises at least one feed opening for feeding a blow-by gas provided with aerosols, an outlet opening for discharging a blow-by gas cleaned of aerosols, at least one outflow opening for releasing aerosols removed from the blow-by gas, and which is arranged between a flow path of the at least one feed opening and the outlet opening, and a plurality of projections for configuring the flow path running from the at least one feed opening to the outflow opening in a meandering manner, in order to decelerate the blow-by gas which enters the feed opening and which is provided with aerosols, in terms of its flow rate. The separator is characterized in that the projections in their end region, around which blow-by gas flows, have a portion with increasing projection width.Type: GrantFiled: July 14, 2021Date of Patent: August 8, 2023Assignees: Liebherr Machines Bulle SA, Deere & CompanyInventors: Zhi Li, Domenico Palmisani, Kyle D. Redfern
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Patent number: 11698021Abstract: The invention relates to an engine having prechamber ignition, in particular a gas engine, that comprises a main combustion space in a cylinder of the engine for combusting an air-fuel mixture and a prechamber having an ignition device arranged therein and a fuel injector arranged therein, wherein the prechamber has at least one transfer port that fluidically connects the prechamber to the main combustion space. The engine is characterized in that the fuel injector arranged in the prechamber is the only fuel injector via which fuel can be introduced into the associated main combustion space.Type: GrantFiled: March 4, 2022Date of Patent: July 11, 2023Assignee: Liebherr Machines Bulle SAInventors: Bouzid Seba, Ulrich Weiss, Bakir Puran, Roberto Andreutti
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Patent number: 11639691Abstract: The invention relates to a device for supplying a gaseous fuel to an engine that comprises a gas accumulator for receiving highly pressurized gaseous fuel, a gas buffer for receiving medium pressurized gaseous fuel, a gas supply device for delivering a gaseous fuel into an engine combustion space, a first gas line that connects the gas accumulator to the gas buffer and whose gas flow can be regulated via a first valve, a second gas line that connects the gas accumulator to the gas buffer and whose gas flow can be regulated via a second valve, and a third gas line that connects the gas buffer to the gas supply device. The device is further characterized in that a compressor is arranged in the second gas line to increase a pressure of a gaseous fuel flowing from the gas accumulator to the gas buffer.Type: GrantFiled: March 24, 2021Date of Patent: May 2, 2023Assignee: Liebherr Machines Bulle SAInventors: Bakir Puran, Bouzid Seba, Ulrich Weiss
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Patent number: 11428103Abstract: The invention relates to an axial piston machine comprising a drive shaft, a driving gear non-rotatably connected thereto with one or more driving gear pistons accommodated therein, whose piston stroke is adjustable by a swash plate, wherein at least one return spring acts on the swash plate and at least one adjusting piston is supported on the swash plate via an adjusting lever, a first and/or second stop is provided for the adjusting piston to limit the swivel angle of the swash plate, wherein a first stop is formed by the bottom of the blind hole within the connecting plate and/or a second stop is formed by a flat protrusion of the housing in the vicinity of the blind hole.Type: GrantFiled: April 6, 2020Date of Patent: August 30, 2022Assignee: LIEBHERR MACHINES BULLE SAInventors: Didier Angeloz, Marko Del Aguila
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Patent number: 11300038Abstract: The invention relates to an engine having prechamber ignition, in particular a gas engine, that comprises a main combustion space in a cylinder of the engine for combusting an air-fuel mixture and a prechamber having an ignition device arranged therein and a fuel injector arranged therein, wherein the prechamber has at least one transfer port that fluidically connects the prechamber to the main combustion space. The engine is characterized in that the fuel injector arranged in the prechamber is the only fuel injector via which fuel can be introduced into the associated main combustion space.Type: GrantFiled: April 20, 2021Date of Patent: April 12, 2022Assignee: Liebherr Machines Bulle SAInventors: Bouzid Seba, Ulrich Weiss, Bakir Puran, Roberto Andreutti
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Patent number: 11248514Abstract: 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: GrantFiled: April 20, 2020Date of Patent: February 15, 2022Assignees: Liebherr Machines Bulle SA, Deere & CompanyInventors: Domenico Palmisani, Raghavendra Hedge, Zhi Li, Michael Sullivan
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Patent number: 10988837Abstract: 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: GrantFiled: August 21, 2018Date of Patent: April 27, 2021Assignee: Liebherr Machines Bulle SAInventors: Jose Bapst, Carsten Kollmeyer, Erwin Feusi, Gabriel Meckl
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Patent number: D923571Type: GrantFiled: October 4, 2019Date of Patent: June 29, 2021Assignee: LIEBHERR MACHINES BULLE SAInventors: Marko Del Aguila, Didier Angeloz, Jonas Lorenz