DE10305000A1 - Metallic bellows pressure accumulator for a hydraulic system, e.g. a motor vehicle braking system, has a pressure sensor and evaluation unit for early detection of its faulty operation - Google Patents
Metallic bellows pressure accumulator for a hydraulic system, e.g. a motor vehicle braking system, has a pressure sensor and evaluation unit for early detection of its faulty operation Download PDFInfo
- Publication number
- DE10305000A1 DE10305000A1 DE2003105000 DE10305000A DE10305000A1 DE 10305000 A1 DE10305000 A1 DE 10305000A1 DE 2003105000 DE2003105000 DE 2003105000 DE 10305000 A DE10305000 A DE 10305000A DE 10305000 A1 DE10305000 A1 DE 10305000A1
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- Prior art keywords
- metal bellows
- pressure
- pressure accumulator
- accumulator according
- passage
- Prior art date
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Links
- 238000001514 detection method Methods 0.000 title abstract description 3
- 238000011156 evaluation Methods 0.000 title 1
- 239000002184 metal Substances 0.000 claims description 58
- 239000012530 fluid Substances 0.000 claims description 17
- 230000007257 malfunction Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 20
- 238000010586 diagram Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F15B1/10—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/06—Applications or arrangements of reservoirs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
-
- 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
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
-
- 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
- F15B2201/30—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
- F15B2201/51—Pressure detection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
Technisches Gebiettechnical area
Die Verwendung von Metallbalgdruckspeichern findet dann statt, wenn eine Gasdiffusion zwischen den Kammern des Druckbehälters verhindert werden soll. Insofern sind die Metallbalgdruckspeicher den als Druckspeicher häufig verwendeten Membranspeichern überlegen. Die bei den Membranspeichern vorhandene elastische Membran kann ein Eindiffundieren von Gasen in die Hydraulikflüssigkeit nicht mit Sicherheit völlig verhindern. Die dann in der Hydraulikflüssigkeit sich bildenden Gasblasen können das Bremssystem erheblich beeinflussen.The use of metal bellows accumulators takes place when gas diffusion between the chambers of the pressure vessel should be prevented. In this respect, the metal bellows pressure accumulator often as a pressure accumulator consider the membrane memories used. The elastic membrane present in the membrane accumulators can be a Diffusion of gases into the hydraulic fluid is not certain completely prevent. The gas bubbles that then form in the hydraulic fluid can do this Influence braking system significantly.
Es werden deshalb Metallbalgdruckspeicher für Hydrauliksysteme verwendet, die insbesondere bei Bremssystemen für Kraftfahrzeuge Einsatz finden. Die Druckbehälter der Speicher sind mit zwei Kammern versehen und zwar mit einer Kammer für das Druckgas und einer Kammer für das hydraulische Fluid. Die Kammern sind durch den Metallbalg und einen daran angebrachten Boden voneinander getrennt. Der Druckbehälter ist mit einer Befüllöffnung für das Druckgas und mit einem Durchlass für das Fluid versehen.Therefore, there are metal bellows accumulators for hydraulic systems used, which are used in particular in brake systems for motor vehicles. The pressure vessels the memory are provided with two chambers, namely one chamber for the Compressed gas and a chamber for the hydraulic fluid. The chambers are through the metal bellows and a floor attached to it separated. The pressure vessel is with a filling opening for the compressed gas and with a passage for that Provide fluid.
Die Metallbalgdruckspeicher verhindern zwar eine Gasdiffusion, jedoch hat der Metallbalg eine eingeschränkte Elastizität bzw. Festigkeit. Der Metallbalg kann nur Druckdifferenzen von wenigen bar ertragen und ist deshalb vor Überlastungen zu schützen. Hierfür sind verschiedene Möglichkeiten in Gebrauch.The metal bellows accumulators prevent a gas diffusion, but the metal bellows has a limited elasticity or strength. The metal bellows can only withstand pressure differences of a few bar and is therefore against overloads to protect. Therefor are different options in use.
Durch die WO 97/46823 ist Metallbalgdruckspeicher bekannt geworden, bei dem im Fluiddurchlass ein Ventil vorgesehen ist, das bei einer vorgegebenen Endstellung des Metallbalgbodens ein Ausströmen der hydraulischen Flüssigkeit aus dem Flüssigkeitsraum unterbindet. Bei geschlossenem Ventil bleibt selbst dann, wenn das angeschlossene Hydrauliksystem druckluftlos werden sollte, im Ölraum des Speichers ein Druck aufrecht erhalten, der dem Druck im Gasraum entspricht. Nicht erkannt werden bei dieser Lösung jedoch eventuell kleinere Beschädigungen am Ventil bzw. am Metallbalg.Through WO 97/46823 is metal bellows pressure accumulator become known in which a valve is provided in the fluid passage is that at a predetermined end position of the metal bellows base an outflow the hydraulic fluid from the liquid space in derogation. With the valve closed, even if that connected hydraulic system should be pressureless in the oil space of the Storage maintains a pressure equal to the pressure in the gas space equivalent. However, smaller solutions may not be recognized with this solution damage on the valve or on the metal bellows.
Darstellung der Erfindungpresentation the invention
Der Erfindung liegt die Aufgabe zugrunde, einen Metallbalgdruckspeicher so auszubilden, dass mögliche Beschädigungen desselben frühzeitig erkannt und behoben werden können, so dass ein Ausfall des Metallbalgdruckspeicher vermieden wird.The invention is based on the object to design a metal bellows accumulator in such a way that possible damage the same early can be recognized and corrected, so that failure of the metal bellows accumulator is avoided.
Die Lösung der gestellten Aufgabe wird mit den Merkmalen des Anspruchs 1 erreicht. Die Unteransprüche 2 bis 9 stellen vorteilhafte Weiterbildungen des Erfindungsgedankens dar.The solution to the task is achieved with the features of claim 1. The sub-claims 2 to 9 represent advantageous developments of the inventive concept.
Bei einem Metallbalgdruckspeicher für hydraulische Systeme, wie Bremssysteme in Kraftfahrzeugen und dergl. mit einem Druckbehälter mit zwei Kammern, einer Kammer für das Druckgas und einer Kammer für das hydraulische Fluid, wobei die Kammern durch den Metallbalg und einen daran angebrachten Boden voneinander getrennt sind und der Druckbehälter mit einer Befüllöffnung für das Druckgas und mit einem Durchlass für das Fluid versehen ist, wird die Lösung der gestellten Aufgabe erfindungsgemäß dadurch erreicht, dass der Metallbalgdruckspeicher mit Mitteln zur Erkennung von Fehlfunktionen versehen ist. Die Fehlfunktionen können am Metallbalg oder am Durchlass für das Fluid auftreten. Als Mittel für die Erkennung der Fehlfunktionen wird der Metallbalgdruckspeicher mit Messwertaufnehmern ausgestattet, welche mit einem Rechner verbunden werden. Die aufgenommenen Messwerte werden im Rechner verarbeitet und mit den Werten eines unbeschädigten Druckspeichers verglichen. Bei Abweichungen von den vorgegebenen Werten liegt eine Fehlfunktion vor. Da die Fehlfunktionen sowohl am Metallbalg als auch am Durchlass vorhanden sein können, ist es zweckmäßig, wenn mehrere Messwertaufnehmer eingesetzt werden, um alle möglichen Fehlfunktionen zu ermitteln. Denkbar ist aber auch, einzelne Teile des Metallbalgdruckspeichers so auszubilden, dass eine Beschädigung eher unwahrscheinlich ist und nur einen Messwertaufnehmer einzusetzen ist, dessen Messwert auf das Teil des Metallbalgdruckspeichers gerichtet ist, dass einer möglichen Beschädigung und damit Fehlfunktion unterliegen kann.With a metal bellows accumulator for hydraulic Systems such as braking systems in motor vehicles and the like. With one pressure vessel with two chambers, one chamber for the compressed gas and a chamber for the hydraulic fluid, the chambers through the metal bellows and an attached floor are separated from each other and the pressure vessel with a filling opening for the compressed gas and with a passage for the fluid is provided, will solve the task according to the invention achieved that the bellows accumulator with means for detection is malfunctioning. The malfunctions can occur on Metal bellows or at the passage for the fluid occur. As a means of detecting malfunctions the metal bellows accumulator is equipped with sensors, which are connected to a computer. The recorded measured values are processed in the computer and with the values of an undamaged pressure accumulator compared. If there are deviations from the specified values, there is a Malfunction before. Since the malfunctions both on the metal bellows and can also be present at the culvert, it is useful if multiple sensors are used to cover all possible Identify malfunctions. Individual parts are also conceivable of the metal bellows accumulator so that damage is unlikely and only one sensor is to be used, whose measured value is directed to the part of the metal bellows accumulator that one potential damage and may be subject to malfunction.
Um eine Fehlfunktion am Durchlassventil für das Fluid zu ermitteln, wird als Messwertaufnehmer ein Druckaufnehmer eingesetzt, welcher den Fluiddruck über der Zeit misst. Aus der Druckkurve während des Hubvorgangs beim Öffnen des Durchlasses bzw. beim Schließen des Durchlasses, können auf eine Beschädigung an der Durchlassöffnung Rückschlüsse gezogen werden. So findet beim Öffnen der Durchlassöffnung eines unbeschädigten Verschlusses eine scharfe Auslenkung der Druckkurve statt. Bei einer beschädigten Dichtung ist diese Abwinkelung der Druckkurve nicht vorhanden. Die Druckkurve zeigt vielmehr einen bogenförmigen Verlauf. Auch beim Schließverhalten können Abweichungen im Verlauf der Druckkurven bei einer unbeschädigten und einer beschädigten Durchlassöffnung ermittelt werden. Bei einer beschädigten Dichtung ist die Schließzeit der Dichtung deutlich länger als die bei einer unbeschädigten Dichtung. Es ist folglich möglich, durch den Einsatz eines Druckaufnehmers in der Fluidleitung und die Messung des Drucks im Zeitablauf mit Aufzeichnung der entstehenden Druckkurven eine Beschädigung an der Durchlassöffnung, eventuell an dem Ventilstößel, rechtzeitig zu erkennen und Abhilfe zu schaffen. Am veränderten Öffnungs- und Schließverhalten wird die defekte Dichtung erkannt.To a malfunction in the passage valve for the Determining fluid becomes a pressure sensor used, which measures the fluid pressure over time. From the Pressure curve during the lifting process when opening of the passage or when closing the passage, can on a damage at the passage opening Conclusions drawn become. So takes place when opening the passage opening an undamaged Lock a sharp deflection of the pressure curve instead. At a damaged This bend in the pressure curve does not exist in the seal. The Rather, the pressure curve shows an arcuate course. Even when it comes to locking can Deviations in the course of the pressure curves for an undamaged and one damaged Port be determined. If the seal is damaged, the closing time is Seal significantly longer than that of an undamaged Poetry. It is therefore possible to go through the use of a pressure sensor in the fluid line and the measurement of pressure over time with recording of the resulting pressure curves damage at the passage opening, possibly on the valve lifter, in time to recognize and remedy. The changed opening and closing behavior causes the defective one Seal recognized.
Die Erkennung des Fehlverhaltens des Metallbalgs wird ebenfalls durch eine Druckmessung unter Einbeziehung einer Temperaturmessung des Druckgases durchgeführt. Hierfür ist der Metallbalgdruckspeicher mit einem Temperaturfühler für die Messung der Temperatur des Druckgases versehen. Die durch eine Temperaturabsenkung eintretende Absenkung des Ladedrucks wird als Messwert zur Erkennung des Fehlverhaltens des Metallbalgs benutzt.Detecting the malpractice of the Me tall bellows is also carried out by a pressure measurement including a temperature measurement of the compressed gas. For this purpose, the metal bellows accumulator is provided with a temperature sensor for measuring the temperature of the compressed gas. The drop in the boost pressure that occurs as a result of a drop in temperature is used as a measured value for detecting the malfunction of the metal bellows.
Kurzbeschreibung der ZeichnungSummary the drawing
Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels wird die Erfindung nachstehend näher erläutert.Based on an embodiment shown in the drawing the invention will become more apparent below explained.
Es zeigt:It shows:
Der in der
Über
die Pumpe
Die Erkennung des Fehlverhaltens
der Dichtung
Die
Eine Beschädigung an der Dichtung
Wird der Metallbalgdruckspeicher
Sobald der Metallbalg einer plastischen Volumenänderung unterworfen wurde, kann er nur noch eine begrenzte Anzahl von Vollhüben durchführen.Once the metal bellows is a plastic one volume change has been subjected, it can only carry out a limited number of full strokes.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003105000 DE10305000B4 (en) | 2003-02-07 | 2003-02-07 | Metal bellows accumulator for hydraulic systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003105000 DE10305000B4 (en) | 2003-02-07 | 2003-02-07 | Metal bellows accumulator for hydraulic systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE10305000A1 true DE10305000A1 (en) | 2004-08-26 |
| DE10305000B4 DE10305000B4 (en) | 2005-02-03 |
Family
ID=32747606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2003105000 Expired - Lifetime DE10305000B4 (en) | 2003-02-07 | 2003-02-07 | Metal bellows accumulator for hydraulic systems |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10305000B4 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007080673A1 (en) * | 2006-01-12 | 2007-07-19 | Nok Corporation | Metallic bellows type accumulator |
| WO2007083471A1 (en) * | 2006-01-19 | 2007-07-26 | Nok Corporation | Metal bellows accumulator |
| WO2007124882A1 (en) * | 2006-04-27 | 2007-11-08 | Bosch Rexroth Ag | Hydraulic fluid reservoir with integrated high- and low-pressure chamber |
| EP2196681A4 (en) * | 2007-10-10 | 2012-10-10 | Nok Corp | ACCUMULATOR |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997046823A1 (en) * | 1996-06-05 | 1997-12-11 | Haim Loran | A novel accumulator |
| DE19906800A1 (en) * | 1998-11-25 | 2000-05-31 | Continental Teves Ag & Co Ohg | Pressure fluid accumulator |
| DE10139811A1 (en) * | 2000-10-11 | 2002-06-27 | Continental Teves Ag & Co Ohg | Method for filling a pressure medium reservoir and device for carrying out the method |
| DE10131658A1 (en) * | 2001-06-29 | 2003-01-16 | Continental Teves Ag & Co Ohg | Brake fluid store for use in motor vehicle brake system has closing off valve with double sealing points to reduce chance of leakage causing harm to chamber separating metallic bellows arrangement |
-
2003
- 2003-02-07 DE DE2003105000 patent/DE10305000B4/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997046823A1 (en) * | 1996-06-05 | 1997-12-11 | Haim Loran | A novel accumulator |
| DE19906800A1 (en) * | 1998-11-25 | 2000-05-31 | Continental Teves Ag & Co Ohg | Pressure fluid accumulator |
| DE10139811A1 (en) * | 2000-10-11 | 2002-06-27 | Continental Teves Ag & Co Ohg | Method for filling a pressure medium reservoir and device for carrying out the method |
| DE10131658A1 (en) * | 2001-06-29 | 2003-01-16 | Continental Teves Ag & Co Ohg | Brake fluid store for use in motor vehicle brake system has closing off valve with double sealing points to reduce chance of leakage causing harm to chamber separating metallic bellows arrangement |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007080673A1 (en) * | 2006-01-12 | 2007-07-19 | Nok Corporation | Metallic bellows type accumulator |
| WO2007083471A1 (en) * | 2006-01-19 | 2007-07-26 | Nok Corporation | Metal bellows accumulator |
| JP2007192290A (en) * | 2006-01-19 | 2007-08-02 | Nok Corp | Metal bellows type accumulator |
| US7628175B2 (en) | 2006-01-19 | 2009-12-08 | Nok Corporation | Metal bellows accumulator |
| WO2007124882A1 (en) * | 2006-04-27 | 2007-11-08 | Bosch Rexroth Ag | Hydraulic fluid reservoir with integrated high- and low-pressure chamber |
| EP2196681A4 (en) * | 2007-10-10 | 2012-10-10 | Nok Corp | ACCUMULATOR |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10305000B4 (en) | 2005-02-03 |
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