WO2002001076A2 - Accumulateur d'energie hydraulique avec soufflet en metal - Google Patents

Accumulateur d'energie hydraulique avec soufflet en metal Download PDF

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Publication number
WO2002001076A2
WO2002001076A2 PCT/DE2001/002269 DE0102269W WO0201076A2 WO 2002001076 A2 WO2002001076 A2 WO 2002001076A2 DE 0102269 W DE0102269 W DE 0102269W WO 0201076 A2 WO0201076 A2 WO 0201076A2
Authority
WO
WIPO (PCT)
Prior art keywords
bellows
hydraulic
sensor system
hydraulic energy
end wall
Prior art date
Application number
PCT/DE2001/002269
Other languages
German (de)
English (en)
Other versions
WO2002001076A3 (fr
Inventor
Heinz Siegel
Harald Ott
Horst Beling
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP01984061A priority Critical patent/EP1297263B1/fr
Priority to DE50103556T priority patent/DE50103556D1/de
Publication of WO2002001076A2 publication Critical patent/WO2002001076A2/fr
Publication of WO2002001076A3 publication Critical patent/WO2002001076A3/fr

Links

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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/22—Liquid port constructions
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/027—Installations or systems with accumulators having accumulator charging devices
    • F15B1/033—Installations or systems with accumulators having accumulator charging devices with electrical control 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/103—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means the separating means being bellows
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/21—Accumulator cushioning means using springs
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3153—Accumulator separating means having flexible separating means the flexible separating means being bellows
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports
    • F15B2201/411—Liquid ports having valve 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/415—Gas ports
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/50—Monitoring, detection and testing means for accumulators
    • F15B2201/515—Position detection for separating means

Definitions

  • the invention relates to a hydraulic energy accumulator with a housing which has an installation space for a metallic bellows according to the preamble of claim 1.
  • a hydraulic energy accumulator is known with a housing which is cylindrical on the inside and has an axially displaceable piston which is sealed relative to the housing by means of a sealing ring and which separates a hydraulic chamber from a gas chamber. Gas is under pressure in the gas space, so that the gas forms a cushion which can be elastically compressed when hydraulic pressure medium is poured into the hydraulic space.
  • the piston therefore forms a kind of movable wall.
  • the hydraulic chamber is delimited by a wall, through which a plunger extends, which is aligned in the longitudinal axis of the piston, is sealingly guided within the wall and, on the one hand, projects into the hydraulic chamber and, on the other hand, protrudes from the housing.
  • a switch In alignment with the plunger, a switch is arranged in a stationary manner on the wall of the hydraulic energy store with the aid of a holding bracket.
  • the plunger is used to actuate the switch shortly before the piston has emptied the hydraulic space and is able to strike the wall through which the plunger is guided.
  • the switch is a type of sensor system that can be used to detect that the hydraulic chamber is almost drained.
  • the description of the document DE 3048651 AI also indicates that the movable wall can be elastic and can be a bubble, for example.
  • a further hydraulic energy storage device is known with a movable wall, a plunger that can be actuated by the movable wall and a switch, and between the plunger and the switch an arrangement of a pivoted lever mechanism which then actuates the switch via a control cam that can be pivoted by it.
  • the switch gives a signal for an indicator lamp and / or the switching on of a pump drive motor.
  • the movable wall is formed by a part of an elastic bladder or a displaceable piston.
  • the publication DE 1525776 AI also indicates that either a potentiometer or a photo cell with a relay can be provided.
  • a further hydraulic energy accumulator is known from the publication EP 0980981 A1, which is optionally designed as a so-called high-pressure accumulator or a so-called medium-pressure accumulator and, within an installation space surrounded by a housing, has a bellows made of metal for variable limitation of a hydraulic space.
  • the elasticity of the bellows alone serves to store energy. Including a gas cushion in the metallic bellows game in the form of the so-called high-pressure accumulator.
  • the hydraulic energy store is intended, for example, for use in a slip-controlled hydraulic motor vehicle brake system, the gas tightness of the metal from which the bellows is made being advantageous for years for keeping cushion gas away from the pressure fluid by means of which the hydraulic vehicle brake system is operated.
  • leakage results in gas serving the energy storage getting into the hydraulic pressure medium of the respective vehicle brake system and at least jeopardizing the operational safety of a vehicle if the vehicle brake system is designed in such a way that in the event of failure of the hydraulic energy store or a pump supplying it With the help of muscle strength and braking using a master brake cylinder.
  • a master brake cylinder has only a limited pumping capacity, so that in the case of gas bubbles within the hydraulic vehicle brake system, the elasticity of the brake brake does not generate sufficient brake pressure.
  • the hydraulic energy accumulator with the characterizing features of claim 1 has the advantage that a leak in the metallic bellows caused by material fatigue can be recognized indirectly by a movement of the movable end wall of the bellows. This takes place in that, as a result of the construction of the metallic bellows according to the invention, a pressure in the gas is normally always somewhat lower than the pressure prevailing in the hydraulic chamber. When a leak occurs, this has the consequence that the pressure difference provided causes hydraulic pressure medium to flow into the gas space, so that the end wall of the bellows moves and finally actuates the sensor system.
  • the measures listed in the dependent claims allow advantageous developments and improvements of the hydraulic energy store specified in claim 1.
  • the hydraulic energy accumulator according to the invention with the characterizing features of claim 2 has the advantage that a desired pressure difference between the hydraulic space and the gas space is achieved using a thin-walled bellows, in which the same
  • the characterized features of claim 3 result in a space-saving and therefore also inexpensive combination with a hydraulic unit of a hydraulic vehicle brake system. It is of particular advantage here that the sensors, which are intended to detect the alignment of the end wall of the bellows within the housing, are inserted with their electrical connections directly into an electronic evaluation and control circuit, and in this way the laying of special sensor connection cables, which cause costs and possibly become unusable due to cable breaks.
  • FIG. 1 shows a first exemplary embodiment in longitudinal section in a filled state
  • FIG. 2 shows a single part of the exemplary embodiment according to FIG. 1
  • FIG. 3 shows the exemplary embodiment according to FIG. 1 in another operating state, likewise in longitudinal section
  • FIG. 4 shows a modification of first embodiment with respect to the sensor 5
  • FIG. 6 a fourth embodiment for the sensor system.
  • the first exemplary embodiment of the hydraulic energy store 2 according to the invention according to FIGS. 1 to 3 has a housing 3, which surrounds an installation space 4 for a metallic bellows 5, and a sensor system 6.
  • the housing 3 is simplified and shown as a hollow cylinder and has a peripheral wall 7, a first end wall 8 and a second end wall 9. In this case, the designer is free to choose where he makes the housing 3 divisible so that the installation space 4 is accessible for installing the metallic bellows 5.
  • the metallic bellows 5 has a first fixed end 10 and a second movable end 11 and with this end
  • an end wall 12 is connected in a gas-tight manner.
  • the folds 13 typical of the bellows 5 are located between the first fixed end 10 and the second movable end 11.
  • the folds 13 can be produced, for example, according to the prior art by partially expanding a thin-walled one
  • the end wall 12 is fastened in a gas-tight manner, for example by means of a weld seam 14 to the second movable end 11 of the bellows 5.
  • the first fixed end 10 of the bellows 5 is welded to the first end wall 8 in a gas-tight manner, for example by means of a weld seam 15 within the installation space 4.
  • a cavity 16 delimited by the bellows 5 between the first end wall 8 of the housing 3 and the end wall 12 of the bellows 5 is intended to be filled with a gas which can be compressed for the purpose of energy storage. Because that Filling such bellows with the gas used to store energy is part of the prior art, for example a gas filling support has been omitted here.
  • the installation space 4 has a length dimension A.
  • the metallic bellows 5 together with its end wall 12, as long as it is outside the installation space 4 has a length which is, for example, 10% is longer than a length dimension A.
  • This has the desired effect when installing in the installation space 4 that if there is atmospheric pressure in the installation space 4 and also in the cavity 16 of the bellows, the end wall 12 of the bellows 5 either inside on the second end wall 9 or when an elastic sealing ring 17 is installed in the end wall 9 rests with a minimum force on this elastic sealing ring 17. Because this elastic sealing ring 17 is the same.
  • the bellows 5 consists of a metallic material, usually of a resilient material such as steel or spring-hard brass, a compression of the bellows 5 in the longitudinal direction during installation has a subsequent pressing of the end wall 12 on the elastic sealing ring 17 or at omitted sealing ring on the surface of the second end wall 9 result.
  • a hydraulic connection opening 18 of the hydraulic energy accumulator 2 is in the exemplary embodiment according to FIG. 1 in an imaginary longitudinal axis of the metallic bellows 5 arranged. So that, as shown in FIG. 3, when the end wall 12 of the bellows is close enough to the second end wall 9 of the housing 3, the sensor system 6 can be actuated, there is a between the end wall 12 of the bellows 5 and the sensor system 6 plunger 19 mounted longitudinally displaceably, which extends through the hydraulic connection opening 18.
  • the sensor system 6 is designed in the form of a switch which can be removed from the prior art and has a movable contact 20 and a fixed contact 21.
  • the contacts 20 and 21 can be arranged in a microswitch housing 22, which is known in the art Can be fastened in a manner to a circuit board 23.
  • the circuit board 23 is the carrier of an evaluation and control circuit of a hydraulic vehicle brake system, which is not shown in detail, and which is also used, for example, for brake slip control.
  • a hydraulic vehicle brake system which is not shown in detail, and which is also used, for example, for brake slip control.
  • Such a hydraulic vehicle brake system has a hydraulic block 24, in which electrically controllable valves and, for example, also a piston pump (not shown) are installed.
  • the housing 3 of the hydraulic energy accumulator 2, projecting from the second end wall 9 in the direction of the hydraulic block 24, has a screw-in connector 25 by means of which the hydraulic energy accumulator 2 is fastened to the hydraulic block 24. So that the tappet 19 can be moved to actuate the sensor system 6 when it is struck by the end wall 12 of the bellows 5, the hydraulic block 24 has a guide bore 26, relative to which the tappet 19 can be displaced longitudinally. So no through this guide bore 26 Pressure medium escapes, an elastic sealing ring 27 is installed, which surrounds the plunger 19 in a sealing manner.
  • the plunger 19 can have a collar 28 which is loaded in the direction towards the end wall 12 of the bellows 5 by means of a helical spring 29. So that this helical spring 29 can exert this load, a helical washer 30 is associated with the helical spring 29 and is permanently installed in the hydraulic block 24. So that the plunger 19 can extend to the sensor system 6, the support disk 30 is designed as an annular disk.
  • FIG. 1 shows the hydraulic energy store 2 as a filled and pressurized gas cushion in the cavity 16 is pressed together by filling hydraulic pressure medium (not shown) into the installation cavity 4.
  • hydraulic pressure medium not shown
  • a pressure in the hydraulic pressure medium is a higher pressure than the gas pressure within the cavity 16 of the bellows 5.
  • the bellows 5 or one of the weld seams 14 If there is a leak, that is to say any leakage, there is a pressure difference in the leak in the sense of a pressure drop from the hydraulic pressure medium to the gas cushion.
  • a spring 35 is shown within the bellows 5. It is installed, for example, in order to support the migration of its end wall 12 in the direction of the second end wall 9 of the housing 3 if there is a leak in the bellows 5.
  • the spring 35 is manufactured in such a way that it has a predetermined length in the non-installed state, as a result of which the spring 35 has a prestress in the installed state.
  • the prestressing of the spring 35 which takes place in this way, gives the possibility of designing the bellows 5 with thinner walls, as a result of which the stress on the material of the bellows 5 becomes smaller with the same longitudinal compression. This counteracts an unwanted failure of the bellows 5 as a result of material fatigue.
  • a plunger 19a can be connected to a soft magnetic coil core 37 and along the path of movement of the coil core 37, for example, provide two coils 38, 39 of a so-called differential transformer 40.
  • a cheaper ohmic potentiometer 41 can be used instead of the expensive differential transformer 40.
  • At least one permanent magnet 43 and one Hall effect sensor 44 is made available as a sensor 6c according to FIG. 6.
  • the at least one permanent magnet 43 is in turn attached to a plunger 19a so that it can be secured by means of the The plunger 19a can be moved relative to the stationary Hall effect sensor 44 so that when it moves relative to the Hall effect sensor 44 it emits a sensor signal.
  • At least one permanent magnet is given as the minimum solution because such a relatively simple sensor system can be used to replace, for example, a microswitch with only a single movable contact 20 and a single immovable contact 21.
  • the principle of leak detection for a bellows is not dependent on whether, according to the exemplary embodiments shown, a gas cushion is arranged within a bellows 5. Rather, as can be seen from FIG. 2 of the document DE 19833410 A1 mentioned in the description of the description, the cavity 16 enclosed by the bellows 5 can be the cavity in which hydraulic pressure medium is to be stored under pressure.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

On connaît l'accumulateur d'énergie hydraulique doté d'un carter comprenant un logement pour un soufflet métallique, qui comporte une extrémité immobile et une extrémité mobile avec une face frontale disposée de manière étanche contre le soufflet, et qui sépare un agent de pression hydraulique du gaz enfermé sous pression. L'avantage que présente ce soufflet métallique est son étanchéité au gaz, dans la mesure où il ne présente pas de fuite au fil du temps. Selon l'invention, ledit soufflet métallique est conçu de façon telle que, vu son élasticité longitudinale, il présente une pression plus faible dans le gaz que dans l'agent de pression hydraulique, et qu'un système de capteurs (6) indique un étirement longitudinal du soufflet métallique (5) lorsque l'agent de pression hydraulique pénètre dans l'espace contenant le gaz à travers une fuite du soufflet métallique. Selon ladite invention, en cas de fuite dans le soufflet métallique, l'accumulateur d'énergie hydraulique (2) et son système de capteurs (6) la signalent . L'indication d'une fuite sert ainsi en même temps à signaler que l'installation de freinage d'un véhicule doté de cet équipement n'est plus fiable.
PCT/DE2001/002269 2000-06-24 2001-06-22 Accumulateur d'energie hydraulique avec soufflet en metal WO2002001076A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01984061A EP1297263B1 (fr) 2000-06-24 2001-06-22 Accumulateur d'energie hydraulique avec soufflet en metal
DE50103556T DE50103556D1 (de) 2000-06-24 2001-06-22 Hydraulikenergiespeicher mit einem aus metall bestehenden faltenbalg

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10030937A DE10030937A1 (de) 2000-06-24 2000-06-24 Hydraulikenergiespeicher mit einem aus Metall bestehenden Faltenbalg
DE10030937.2 2000-06-24

Publications (2)

Publication Number Publication Date
WO2002001076A2 true WO2002001076A2 (fr) 2002-01-03
WO2002001076A3 WO2002001076A3 (fr) 2002-07-18

Family

ID=7646746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/002269 WO2002001076A2 (fr) 2000-06-24 2001-06-22 Accumulateur d'energie hydraulique avec soufflet en metal

Country Status (3)

Country Link
EP (1) EP1297263B1 (fr)
DE (2) DE10030937A1 (fr)
WO (1) WO2002001076A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10207598A1 (de) * 2001-02-23 2002-11-07 Continental Teves Ag & Co Ohg Druckmittelspeicher
DE10119357C2 (de) * 2001-04-20 2003-11-27 Bosch Gmbh Robert Hydraulikenergiespeicher mit einem Faltenbalg mit prüfbarer Endlagendichtung
DE10236391B3 (de) * 2002-08-08 2004-04-08 Robert Bosch Gmbh Verfahren zur Prüfung eines Druckmittelspeichers
DE10242248A1 (de) * 2002-09-12 2004-03-25 Robert Bosch Gmbh Verfahren zur Speicherüberwachungs in einem Speicherladensystem
DE10305001B9 (de) * 2003-02-07 2013-09-12 Carl Freudenberg Kg Metallbalgdruckspeicher für hydraulische Systeme

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1525776A1 (de) 1965-05-11 1972-04-13 Mercier Jacques H Druckbehaelter
DE3048651A1 (de) 1980-12-23 1982-07-15 Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach "druckbehaelter, insbesondere hydropneumatischer speicher"
EP0980981A1 (fr) 1998-08-17 2000-02-23 Continental Teves AG & Co. oHG Accumulateur de pression à fluide
DE19833410A1 (de) 1998-07-24 2000-02-24 Lucas Ind Plc Hydraulische Ansteuereinheit für eine Kraftfahrzeugbremsanlage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933557C2 (de) * 1979-08-18 1982-11-04 Robert Bosch Gmbh, 7000 Stuttgart Meßumformer zur berührungslosen Weg- oder Geschwindigkeitsmessung
DE3133111A1 (de) * 1981-08-21 1983-04-14 Robert Bosch Gmbh, 7000 Stuttgart Druckbeschaffungseinrichtung
US4691739A (en) * 1986-09-02 1987-09-08 United Aircraft Products, Inc. Bootstrap reservoir
JPH02186102A (ja) * 1989-01-10 1990-07-20 Nakamura Koki Kk ピストン型アキュムレータのピストン位置検知装置
IT1283462B1 (it) * 1996-07-19 1998-04-21 Abb Adda S P A Dispositivo oleopneumatico per il comando di interruttori elettrici
DE19906800A1 (de) * 1998-11-25 2000-05-31 Continental Teves Ag & Co Ohg Druckmittelspeicher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1525776A1 (de) 1965-05-11 1972-04-13 Mercier Jacques H Druckbehaelter
DE3048651A1 (de) 1980-12-23 1982-07-15 Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach "druckbehaelter, insbesondere hydropneumatischer speicher"
DE19833410A1 (de) 1998-07-24 2000-02-24 Lucas Ind Plc Hydraulische Ansteuereinheit für eine Kraftfahrzeugbremsanlage
EP0980981A1 (fr) 1998-08-17 2000-02-23 Continental Teves AG & Co. oHG Accumulateur de pression à fluide

Also Published As

Publication number Publication date
EP1297263A2 (fr) 2003-04-02
WO2002001076A3 (fr) 2002-07-18
DE10030937A1 (de) 2002-01-03
EP1297263B1 (fr) 2004-09-08
DE50103556D1 (de) 2004-10-14

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