EP1083338A2 - Agencement pour l'actionnement hydraulique d'un organe mobile d'un véhicule - Google Patents

Agencement pour l'actionnement hydraulique d'un organe mobile d'un véhicule Download PDF

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Publication number
EP1083338A2
EP1083338A2 EP00890274A EP00890274A EP1083338A2 EP 1083338 A2 EP1083338 A2 EP 1083338A2 EP 00890274 A EP00890274 A EP 00890274A EP 00890274 A EP00890274 A EP 00890274A EP 1083338 A2 EP1083338 A2 EP 1083338A2
Authority
EP
European Patent Office
Prior art keywords
working cylinder
pressure
valve
vehicle
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00890274A
Other languages
German (de)
English (en)
Other versions
EP1083338A3 (fr
Inventor
Gerhard Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoerbiger Hydraulik GmbH
Original Assignee
Hoerbiger Hydraulik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoerbiger Hydraulik GmbH filed Critical Hoerbiger Hydraulik GmbH
Publication of EP1083338A2 publication Critical patent/EP1083338A2/fr
Publication of EP1083338A3 publication Critical patent/EP1083338A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1476—Special return means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41581—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5159—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members

Definitions

  • the invention relates to an arrangement for the hydraulic actuation of a movable Component on a vehicle, such as a boot lid, a cover flap or the like, with at least one double-acting hydraulic working cylinder, which is articulated on the one hand on the vehicle and on the other hand on the movable component is, one of his workrooms with a passive pressure accumulator and the other work space is connected to a hydraulic pump, and wherein between Pump and working cylinder branches a line to the tank, into which one Pressure relief valve is used, as well as a method for hydraulic actuation of a movable component on a vehicle, for example a boot lid, a cover flap or the like, by acting on a work space double-acting hydraulic working cylinder, on the one hand on the vehicle and on the other hand is articulated on the movable component by a passive pressure accumulator, and by acting on the opposite working space of the working cylinder by a hydraulic pump.
  • a movable Component on a vehicle such as a boot lid,
  • the passive pressure accumulator is on the piston side Working space of the working cylinder connected and when the connection is blocked between the pump and the rod-side work area causes the loading the pressure accumulator extends the working cylinder and thus opens it, for example a tailgate of a vehicle. To close the tailgate becomes the connection between the pump and the rod-side working area of the working cylinder opened so that the working cylinder retracts and at the same time again the passive pressure accumulator is tensioned.
  • a disadvantage of the control system described is that when opening the tailgate has the full force of the pressure accumulator and thus at least in some areas the opening movement causes very high forces if an object or body part of a person gets into the swivel path of the tailgate. Also at If the tailgate hits a solid obstacle, the high forces of the Pressure accumulator too great risk of damage to the vehicle or the obstacle.
  • a controllable proportional pressure valve is used to adjust the height of a vehicle suspension used in JP 06040233.
  • This proportional pressure valve is however arranged in a line which is between the pump and an electrical actuatable shut-off valve goes out and leads to the tank while the working cylinder is only behind this shut-off valve.
  • the cylinder is on the Pump opposite side only from the weight of the vehicle acted upon and after closing the shut-off valve after the height adjustment process If the proportional pressure valve is inoperative, none can Take over safety functions or allow emergency operation.
  • the press force regulation according to JP 4238993 has a very similar structure, in which the maximum pressing force is set by means of a proportional pressure valve can be while no safety and emergency functionality can be realized. This also applies to the speed regulation in the Remote control for a crane according to DE 29 52 963.
  • the object of the present invention is therefore an arrangement and also to improve the method of the type described above in such a way that the described Disadvantages are avoided and that in particular on simple and safe way the risk of injury to persons or the risk of damage can be reduced for vehicle or other objects.
  • This object is achieved in that between the pump and working cylinder inserted a check valve blocking towards the pump is, and a line between this check valve and the working cylinder branches to the tank, in which an electrically controllable proportional pressure valve is used as a pressure relief valve.
  • the proportional pressure valve is on Component in which the pressure up to which it locks or from which it locks is proportional the driving current. It is therefore easy to use suitable Power supply to the proportional pressure valve, its passage pressure is always slight higher or lower - for the retracting or extending movement of the working cylinder - be kept as it corresponds to the pressure of the pressure accumulator.
  • the proportional pressure valve as a normally closed valve executed.
  • control electronics are provided, in which a program for alternating energization of the proportional pressure valve in adaptation to changing conditions in the pressure accumulator and / or in the Kinematics of the component moved over the working cylinder is stored. So that in the lowest possible excess force in every phase of the movement of the tailgate or the like for movement and thus the optimal passive protection against trapping and damage be guaranteed.
  • a working cylinder 1 is provided, which has one end, preferably the floor, on the vehicle and at the other end, i.e. the piston rod 2 is struck on the moving part.
  • the working cylinder 1 can also be mounted fixed relative to the vehicle could.
  • a passive pressure accumulator 4 with the lowest possible temperature dependence through its spring 5 is with the piston-side working space 3 of the working cylinder 1st connected via a line in which a nozzle 6 is used as a throttle element is.
  • the rod-side working space 7 of the working cylinder 1 is via the pump 8 supplied with hydraulic medium from the tank 9, being in the connecting line between pump 8 and cylinder 1 also a nozzle 10 as a throttle element and a check valve 11 blocking in the direction of the pump 8 are inserted.
  • the Check valve 11 causes the working cylinder 1 when the system is not actuated due to the always occurring leakage of the pump 8 in the direction of the extension the piston rod 2, which is the direction of the Opening the tailgate or the like is, can hike.
  • an electrically controllable proportional pressure valve 13 used, which has different threshold values depending on the level of current supply and thus the pressure level in the rod-side working space 7 of the working cylinder 1 determined.
  • the proportional pressure valve 13 is controlled such that the associated pass threshold is just slightly lower lies as the pressure in the pressure accumulator 4. This therefore just generates the counter pressure, so that the opening process takes place.
  • an electronic Control the energization of the proportional pressure valve 13 varies in this way that changes in the pressure level of the pressure accumulator 4 forces during the extension process as well as different forces the changing geometrical relationships in the motion sequence are taken into account can be.
  • the electronic control controls for example, depending on the cover angle -
  • the determined via displacement, angle or inclination transducer or from their Signals in the control electronics is calculated - with the proportional pressure valve 13 the current that is connected to the pressure of the pressure accumulator 4 force required to open and / or close the cover flap or the like. causes, but there is no excess force like this with conventional Systems designed for the maximum necessary pressure in a large
  • the range of the swivel or displacement path is the case.
  • the corresponding control curve can preferably be determined empirically and stored in the control electronics become. This ensures optimal passive protection against trapping, and also the different pressure profiles for opening and closing - for example due to the support of the closing movement by the weight of the cover flap or the like - can be taken into account.
  • the conventional actuation arrangements necessary pressure relief valves can be omitted.
  • the pump 8 is actuated and also the proportional pressure valve 13 controlled only with such a high current that the pressure in the rod-side Working space 7 just above the pressure determined by the pressure accumulator lies in the piston-side working space 3.
  • a typical control curve becomes a higher one at the beginning of the opening movement Provide power to the proportional pressure valve 13 so that the extension and Overcoming the initial resistance is accomplished with a higher force.
  • the kinematics and leverage ratios are also rather disadvantageous at the beginning, so that a higher force is required.
  • the pressure and the force generated by it are only set to a value that is just sufficient for the opening movement to be able to carry out or continue in the respective phase. Unnecessary and damage in the event of obstacles in the path of the cover flap Excessive force or injuries are avoided. Once the cover flap is in motion and also the kinematics and leverage are more favorable are, the pressure and thus the actuating force is reduced, the Proportional pressure valve 13 less energized.
  • the proportional pressure valve 13 is advantageously closed when de-energized Valve executed, whereby the hold function even in the event of a power failure of the working cylinder 1 guaranteed and unintentional opening of the tailgate or the like is prevented.
  • an element preferably a nozzle, to regulate the volume flow of the hydraulic medium and thus also the Speed of the or each working cylinder 1 may be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
  • Vehicle Body Suspensions (AREA)
EP00890274A 1999-09-10 2000-09-06 Agencement pour l'actionnement hydraulique d'un organe mobile d'un véhicule Withdrawn EP1083338A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT155299 1999-09-10
AT0155299A AT408475B (de) 1999-09-10 1999-09-10 Anordnung zur hydraulischen betätigung eines beweglichen bauteils an einem fahrzeug

Publications (2)

Publication Number Publication Date
EP1083338A2 true EP1083338A2 (fr) 2001-03-14
EP1083338A3 EP1083338A3 (fr) 2003-09-24

Family

ID=3515860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890274A Withdrawn EP1083338A3 (fr) 1999-09-10 2000-09-06 Agencement pour l'actionnement hydraulique d'un organe mobile d'un véhicule

Country Status (3)

Country Link
US (1) US6385969B1 (fr)
EP (1) EP1083338A3 (fr)
AT (1) AT408475B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008061751A1 (fr) * 2006-11-23 2008-05-29 Ixetic Bad Homburg Gmbh Dispositif à ressort à gaz
WO2008061748A1 (fr) * 2006-11-23 2008-05-29 Ixetic Bad Homburg Gmbh Dispositif à ressort à gaz
EP2524997A1 (fr) * 2011-05-18 2012-11-21 Liebherr-Hydraulikbagger GmbH Outil de travail, en particulier machine d'excavation ou machine de transvasement de matériel

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7062567B2 (en) * 2000-11-06 2006-06-13 Endeavors Technology, Inc. Intelligent network streaming and execution system for conventionally coded applications
DE10119340A1 (de) * 2001-04-20 2002-10-31 Stabilus Gmbh Betätigungssystem für eine Klappe o. dergleichen
FR2896011B1 (fr) * 2006-01-12 2011-12-09 Heuliez Dispositif de manoeuvre hydraulique d'un ouvrant de vehicule
DE102006032599A1 (de) * 2006-07-14 2008-02-07 Deere & Company, Moline Hydraulische Anordnung
US9151018B2 (en) * 2011-09-30 2015-10-06 Caterpillar Inc. Closed-loop hydraulic system having energy recovery
CN111197602B (zh) * 2020-01-14 2022-05-13 宝鸡石油机械有限责任公司 一种海底基盘液压系统及系统的节能控制方法
DE102024200630B4 (de) * 2024-01-24 2025-09-04 Hawe Hydraulik Se Hydrauliksystem und Fahrgast-Rückhaltesystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952963A1 (en) 1978-07-13 1980-11-27 H Ayano Device for remote control of hydraulic cranes
US4727791A (en) 1985-07-10 1988-03-01 Diesel Kiki Co., Ltd. Apparatus for controlling a hydraulic single acting cylinder
JPH0640233A (ja) 1992-07-23 1994-02-15 Tokico Ltd サスペンション制御装置
DE19740029A1 (de) 1997-09-11 1999-04-15 Stabilus Gmbh Aktives Stellsystem

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099368A (en) * 1935-04-05 1937-11-16 Siam Device for the automatic control of camber flaps and the like for airplanes
DE1800424B1 (de) * 1968-10-01 1970-02-26 Waldenmaier J E H Kraftkolbenantrieb fuer Armaturen
JPS5312033B2 (fr) * 1972-11-14 1978-04-26
DE2357583C3 (de) * 1973-11-19 1979-04-12 Braas & Co Gmbh, 6000 Frankfurt Einspritzeinheit einer Kunststoff-Spritzgießmaschine
DE4140409A1 (de) * 1991-12-07 1993-06-09 Robert Bosch Gmbh, 7000 Stuttgart, De Elektrohydraulische steuereinrichtung
US5921604A (en) * 1996-05-16 1999-07-13 Applied Power Inc. Hydraulic door operating system
FR2766526B1 (fr) * 1997-07-28 2000-09-29 Hydroperfect Int Dispositif a deux vitesses pour un verin hydraulique ou un moteur hydraulique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952963A1 (en) 1978-07-13 1980-11-27 H Ayano Device for remote control of hydraulic cranes
US4727791A (en) 1985-07-10 1988-03-01 Diesel Kiki Co., Ltd. Apparatus for controlling a hydraulic single acting cylinder
JPH0640233A (ja) 1992-07-23 1994-02-15 Tokico Ltd サスペンション制御装置
DE19740029A1 (de) 1997-09-11 1999-04-15 Stabilus Gmbh Aktives Stellsystem

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008061751A1 (fr) * 2006-11-23 2008-05-29 Ixetic Bad Homburg Gmbh Dispositif à ressort à gaz
WO2008061748A1 (fr) * 2006-11-23 2008-05-29 Ixetic Bad Homburg Gmbh Dispositif à ressort à gaz
EP2524997A1 (fr) * 2011-05-18 2012-11-21 Liebherr-Hydraulikbagger GmbH Outil de travail, en particulier machine d'excavation ou machine de transvasement de matériel

Also Published As

Publication number Publication date
ATA155299A (de) 2001-04-15
EP1083338A3 (fr) 2003-09-24
AT408475B (de) 2001-12-27
US6385969B1 (en) 2002-05-14

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