DE19538615B4 - Hydraulic brake system with pulsation damper - Google Patents
Hydraulic brake system with pulsation damper Download PDFInfo
- Publication number
- DE19538615B4 DE19538615B4 DE1995138615 DE19538615A DE19538615B4 DE 19538615 B4 DE19538615 B4 DE 19538615B4 DE 1995138615 DE1995138615 DE 1995138615 DE 19538615 A DE19538615 A DE 19538615A DE 19538615 B4 DE19538615 B4 DE 19538615B4
- Authority
- DE
- Germany
- Prior art keywords
- brake
- section
- brake system
- membrane
- line
- 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.)
- Expired - Lifetime
Links
- 230000010349 pulsation Effects 0.000 title claims abstract description 7
- 239000012528 membrane Substances 0.000 claims abstract description 46
- 238000002955 isolation Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 15
- 238000010137 moulding (plastic) Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
- F16L55/052—Pneumatic reservoirs
- F16L55/053—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe
-
- 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
- B60T13/16—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 pumps directly, i.e. without interposition of accumulators or 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4068—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/42—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems
- B60T8/4275—Pump-back systems
- B60T8/4291—Pump-back systems having means to reduce or eliminate pedal kick-back
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
- B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
- B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
- B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
- B60T8/4872—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems
Abstract
Hydraulische Bremsanlage mit einer Einrichtung zur Aktivbremsung, mit einem pedalbetätigten Hauptzylinder, der an einen Vorratsbehälter angeschlossen ist, mit mindestens einer Bremsleitung vom Hauptzylinder zu mindestens einer Radbremse, mit einem Trennventil in der Bremsleitung, mit einer Pumpenanordnung, die mit ihrer Saugseite über eine erste Saugleitung an die Bremsleitung zwischen Hauptzylinder und Trennventil und über eine Druckleitung an die Bremsleitung zwischen Trennventil und Radbremse angeschlossen ist, wobei zwischen Hauptzylinder und Saugseite der Pumpenanordnung mindestens ein Pulsationsdämpfer angeordnet ist, welcher eine verformbare Membran aufweist, die einen druckmittelgefüllten Bereich von einer gasgefüllten Kammer trennt, dadurch gekennzeichnet, dass die gasgefüllte Kammer (5, 105, 205, 305, 405) zwei Abschnitte (7, 107, 207, 307, 407; 8, 108, 208, 308, 408) aufweist, deren zweiter Abschnitt (8, 108, 208, 308, 408) von Wänden begrenzt ist, und für die Membran (1, 401) nicht zugänglich ist, wobei ein Gasaustausch zwischen den beiden Abschnitten (7, 107, 207, 307, 407; 8, 108,...hydraulic Brake system with an active braking device, with a pedal-operated master cylinder, the to a storage container is connected to at least one brake line from the master cylinder at least one wheel brake, with a separating valve in the brake pipe, with a pump arrangement, with its suction side over a first suction line to the brake line between master cylinder and Separating valve and over a pressure line to the brake line between isolation valve and wheel brake is connected, between the master cylinder and suction side of the Pump arrangement is arranged at least one pulsation damper, which a deformable membrane having a pressure medium filled area from a gas-filled Chamber separates, characterized in that the gas-filled chamber (5, 105, 205, 305, 405) two sections (7, 107, 207, 307, 407; 8, 108, 208, 308, 408), whose second section (8, 108, 208, 308, 408) of walls is limited, and for the membrane (1, 401) not accessible is, wherein a gas exchange between the two sections (7, 107, 207, 307, 407; 8, 108, ...
Description
Die vorliegende Erfindung betrifft eine hydraulische Bremsanlage gemäß dem Oberbegriff des Anspruchs 1. Eine derartige Bremsanlage ist beispielsweise in der WO 95/11824 A1 beschrieben. Es handelt sich dabei um eine Bremsanlage, die zur Bremsschlupf- und Antriebsschlupfregelung geeignet ist. Bei einer Bremsschlupfregelung arbeitet sie nach dem Rückförderprinzip und ist zur Antriebsschlupfregelung mit einer selbstansaugenden Rückförderpumpe ausgestattet, welche mit ihrer Saugseite an die Bremsleitung zwischen Hauptzylinder und Trennventil anschließt. Während der Antriebsschlupfregelung ist das Trennventil in der Bremsleitung für gewöhnlich geschlossen. Wenn jedoch der Fahrer bei laufender Antriebsschlupfregelung das Bremspedal betätigt, so wird das elektromagnetisch betätigte Trennventil geöffnet. Die Druckspitzen des von der selbstansaugenden Rückförderpumpe geförderten Druckmittels können sich dann bis zum Hauptzylinder, aber auch in die zur Bremsleitung gelegte Saugleitung der Pumpe fortpflanzen. Um diese Druckspitzen abzudämpfen, weist die Bremsanlage in der Bremsleitung zwischen Hauptzylinder und Anschluß der Saugleitung sowie in der Saugleitung selbst jeweils einen Pulsationsdämpfer auf, welcher mit einer eingespannten, verformbaren Membran versehen ist, die eine druckmittelgefüllte, an die jeweilige Leitung angeschlossene Kammer von einer luftgefüllten Kammer trennt. Die luftgefüllte Kammer wird von einem Stützkörper begrenzt, an welchen sich die Membran anlegt, wenn in der druckmittelgefüllten Kammer ein Druck aufgebaut wird. Der Stützkörper begrenzt die luftgefüllte Kammer zur Atmosphäre hin und ist wahlweise luftdicht oder luftdurchlässig gestaltet, so daß ein Luftaustausch mit der Atmosphäre unmöglich oder möglich ist. Wenn der Stützkörper luftdicht ist, dient die luftgefüllte Kammer als Luftfeder zur Rückstellung der Membran und zur Dämpfung von Druckspitzen. Auf Dauer kommt es jedoch zur Permeation der Luft durch die Membran hindurch in die druckmittelgefüllte Kammer, so daß der Luftfedereffekt nachläßt und sich die Membran dauerhaft an den Stützkörper anlegt. Dann ist eine wirksame Dämpfung von Druckspitzen durch die Membran nicht mehr möglich. Wenn andererseits der Stützkörper luftdurchlässig ist, so besteht zwar nicht die Gefahr, daß sich die Membran dauerhaft an den Stützkörper anlegt – ausgetretene Luft wird durch atmosphärische Luft ersetzt –, jedoch entsteht bei einer Beschädigung der Membran eine Leckage von Druckmittel in die Atmosphäre. Die Wahl einer geschlossenen gasgefüllten Kammer ist daher vorzuziehen, da es zwar möglicherweise später im Laufe der Zeit zu einer höheren Geräuschentwicklung kommt, eine sicherheitskritische Situation aber nicht auftreten kann, da bei Beschädigung der Membran das Druckmittel höchstens die dichte Kammer ausfüllen kann.The The present invention relates to a hydraulic brake system according to the preamble of claim 1. Such a brake system is for example in WO 95/11824 A1. It is a brake system, which is suitable for brake slip and traction control. In a brake slip control, it works according to the return flow principle and is for traction control with a self-priming Return pump equipped, which with its suction side to the brake line between Master cylinder and separating valve connects. While the traction control is the isolation valve in the brake line is usually closed. But when the driver with the traction control system running, the brake pedal actuated, so the solenoid-operated isolation valve is opened. The Pressure peaks of funded by the self-priming return pump Pressure medium can then up to the master cylinder, but also in the brake line propagate the suction line of the pump. To these pressure peaks damp, points the brake system in the brake line between the master cylinder and connection of the Suction line and in the suction line itself each have a pulsation damper, which is provided with a clamped, deformable membrane, the one pressure medium filled, Chamber connected to the respective duct from an air-filled chamber separates. The air filled Chamber is bounded by a support body, at which the membrane applies when in the fluid-filled chamber a pressure is built up. The support body limited the air-filled chamber to the atmosphere towards and is either airtight or permeable to air, so that an air exchange with the atmosphere impossible or possible is. When the support body is airtight is, the air filled serves Chamber as air spring to the provision the membrane and for damping of pressure peaks. In the long term, however, it comes to the permeation of the air through the membrane into the pressure medium-filled chamber, so that the air spring effect relaxes and becomes the membrane is permanently applied to the support body. Then there is an effective damping of pressure peaks through the membrane no longer possible. On the other hand, if the Supporting body is permeable to air, so there is no risk that the membrane permanently on the support body creates - leaked Air is through atmospheric Air replaces -, however, it will be damaged the membrane leakage of pressure medium into the atmosphere. The Choice of a closed gas-filled Chamber is therefore preferable as it may be later in the course the time to a higher noise comes, a safety-critical situation but does not occur can, as in case of damage the diaphragm the pressure medium at most fill in the tight chamber can.
Die Aufgabe der vorliegenden Erfindung ist es, eine Bremsanlage der eingangs genannten Art zu schaffen, bei welcher die genannten Ermüdungserscheinungen durch Permeation nicht auftreten.The Object of the present invention is to provide a brake system to create the aforementioned type, in which the said signs of fatigue not occur by permeation.
Diese Aufgabe wird gelöst in Verbindung mit den kennzeichnenden Merkmalen des Anspruchs 1. Wenn man davon ausgeht, daß bei einer dichten Kammer gemäß dem Stand der Technik in der luftgefüllten Kammer derselbe Druck herrscht wie in der druckmittelgefüllten Kammer, was bei vollem Bremsdruck bis zu 200 bar sein können, so entstehen unter der Annahme, daß kein Wärmeaustausch möglich ist, Gastemperaturen von kurzzeitig über 800 Grad Celsius. Bei derart hohen Temperaturen ist der Volumenverlust in der luftdichten Kammer durch Permeation durch die Membran besonders groß. Das Prinzip der vorliegenden Erfindung besteht also darin, derart hohe Temperaturen dadurch zu vermeiden, daß die luftgefüllte Kammer nicht auf das Volumen 0 zusammengedrückt werden kann. Das jenseits der Membran im zweiten Abschnitt der luftgefüllten Kammer befindliche Volumen kann durch die Membran nicht komprimiert werden. Dadurch ist der Druck in der luftgefüllten Kammer je nach Volumenverhältnis der beiden Abschnitte auf einen bestimmten Wert begrenzt. Entsprechend niedriger sind auch die damit verbundenen Gastemperaturen. Hierdurch wird die Permeation durch die Membran deutlich kleiner. Wenn der zweite Abschnitt beispielsweise ein Viertel des Volumens des ersten Abschnitts aufweist, so wird der Druck in der luftgefüllten Kammer auf ca. 5–7 bar begrenzt. Die zuzuordnende Temperatur liegt dann bei etwa 200 Grad Celsius. Je größer der zweite Abschnitt bemessen ist, desto niedriger ist der entstehende Druck in der luftgefüllten Kammer. Wenn der zweite Abschnitt so groß ist, daß nur noch ein Druckanstieg von wenigen Zehntel bar möglich ist, dann käme das annähernd einem Atmosphärenanschluß mit seinem positiven Einfluß auf die Langzeitwirksamkeit des Pulsationsdämpfers gleich. Da der zweite Abschnitt hierzu jedoch nur ein Volumen von höchstens 1 cm3 benötigt, ist ein Ausfall der Bremsanlage auch bei einer Beschädigung der Membran nicht zu befürchten.This object is solved in conjunction with the characterizing features of claim 1. Assuming that in a sealed chamber according to the prior art in the air-filled chamber, the same pressure prevails as in the pressure fluid-filled chamber, which at full brake pressure up to 200 bar may arise, assuming that no heat exchange is possible, gas temperatures of briefly above 800 degrees Celsius. At such high temperatures, the volume loss in the airtight chamber by permeation through the membrane is particularly large. The principle of the present invention is thus to avoid such high temperatures in that the air-filled chamber can not be compressed to the volume 0. The volume located beyond the membrane in the second section of the air-filled chamber can not be compressed by the membrane. As a result, the pressure in the air-filled chamber is limited to a certain value, depending on the volume ratio of the two sections. The associated gas temperatures are correspondingly lower. As a result, the permeation through the membrane is much smaller. For example, if the second section has a quarter of the volume of the first section, the pressure in the air-filled chamber is limited to about 5-7 bar. The assigned temperature is then at about 200 degrees Celsius. The larger the second section is sized, the lower the resulting pressure in the air-filled chamber. If the second section is so large that only a pressure increase of a few tenths of a bar is possible, then the approximately one atmosphere connection with its positive influence on the long-term effectiveness of the Pulsationsdämpfers would be equal. Since the second section, however, requires only a volume of at most 1 cm 3 , a failure of the brake system is not to be feared even if the diaphragm is damaged.
Weitere vorteilhafte Merkmale enthalten die Unteransprüche sowie die nun folgende Beschreibung einiger Ausführungsbeispiele der Erfindung anhand einer Zeichnung.Further advantageous features include the dependent claims and the following Description of some embodiments the invention with reference to a drawing.
Die
Allen
Figuren ist gemeinsam, daß die
Membran jeweils rotationssymmetrisch um die Mittelachse aufgebaut
ist und daß sich
in den Figuren jeweils unter der Membran Druckmittel und oberhalb
der Membran Gas befindet. Im Normalfall wird dieses Gas Luft sein.
Die Membranen der
Die
Membran
Das
den Pulsationsdämpfer
umgebende Gehäuse
In
der dargestellten Grundstellung des Pulsationsdämpfers liegt die Kuppe
Das
Ausführungsbeispiel
gemäß
Die
Befestigung der Membran
Auch
in
In
In
In
diesem Falle ist jedoch die Formgebung der Membran
Die
Art der Befestigung nach
Ebenso können auch andere Kammeraufteilungen und Befestigungsarten untereinander kombiniert werden.As well can also other chamber divisions and types of attachment with each other be combined.
Weitere
Ausführungsformen
der Erfindung sind nicht dargestellt. Es kommen hierfür in Frage beispielsweise
der Ersatz der Einlegebleche
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995138615 DE19538615B4 (en) | 1995-10-17 | 1995-10-17 | Hydraulic brake system with pulsation damper |
PCT/EP1996/004369 WO1997014591A1 (en) | 1995-10-17 | 1996-10-09 | Hydraulic brake system with pulsation damper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995138615 DE19538615B4 (en) | 1995-10-17 | 1995-10-17 | Hydraulic brake system with pulsation damper |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19538615A1 DE19538615A1 (en) | 1997-04-24 |
DE19538615B4 true DE19538615B4 (en) | 2007-11-15 |
Family
ID=7775063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995138615 Expired - Lifetime DE19538615B4 (en) | 1995-10-17 | 1995-10-17 | Hydraulic brake system with pulsation damper |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE19538615B4 (en) |
WO (1) | WO1997014591A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19806724B4 (en) * | 1998-02-18 | 2005-02-17 | Continental Teves Ag & Co. Ohg | Brake system with pulsation damper |
DE19856697C2 (en) | 1998-12-09 | 2001-02-22 | Zahnradfabrik Friedrichshafen | Vibration damper for damping liquid vibrations in a hydraulic system |
DE19910100A1 (en) * | 1999-03-08 | 2000-09-14 | Continental Teves Ag & Co Ohg | Oscillation damper for use in hydraulic braking device for car, has membrane arranged around foam rubber compressible element |
JP4051337B2 (en) * | 2001-06-30 | 2008-02-20 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Piston pump |
DE10215846A1 (en) * | 2002-04-10 | 2003-11-06 | Hydac Technology Gmbh | Hydraulic accumulators, especially membrane accumulators |
DE102005009658B4 (en) * | 2005-02-02 | 2014-05-22 | Continental Teves Ag & Co. Ohg | hydraulic power unit |
FR2903064B1 (en) * | 2006-06-30 | 2009-05-01 | Bosch Gmbh Robert | BRAKE HYDRAULIC CIRCUIT |
DE102018219605A1 (en) * | 2018-07-07 | 2020-01-09 | Robert Bosch Gmbh | Bremssystemdämpfvorrichtung |
DE102019208406A1 (en) | 2019-06-08 | 2020-12-10 | Robert Bosch Gmbh | Brake system damper |
DE102019209892A1 (en) * | 2019-07-04 | 2021-01-07 | Robert Bosch Gmbh | Brake system damper with another space |
DE102019210649A1 (en) * | 2019-07-18 | 2021-01-21 | Robert Bosch Gmbh | Brake system damping device with a passage |
Citations (5)
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---|---|---|---|---|
DE3912935A1 (en) * | 1989-03-21 | 1990-12-06 | Teves Gmbh Alfred | BLOCK-PROTECTED, HYDRAULIC BRAKE SYSTEM |
DE4040277A1 (en) * | 1990-12-17 | 1992-06-25 | Bosch Gmbh Robert | SLIP CONTROL HYDRAULIC BRAKE SYSTEM, ESPECIALLY FOR MOTOR VEHICLES |
EP0539898A1 (en) * | 1991-10-30 | 1993-05-05 | Sumitomo Electric Industries, Limited | Brake fluid pressure control device |
DE4336464A1 (en) * | 1993-10-26 | 1995-04-27 | Bosch Gmbh Robert | Hydraulic brake system |
US5410945A (en) * | 1993-08-17 | 1995-05-02 | Richard Schops | Pressure control device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504424A (en) * | 1948-08-30 | 1950-04-18 | Kraak Abraham | Liquid shock absorber |
US3948288A (en) * | 1974-12-13 | 1976-04-06 | Gardner-Denver Company | Hydraulic accumulator |
FR2319037A1 (en) * | 1975-07-25 | 1977-02-18 | Bosch Gmbh Robert | Hydropneumatic accumulator with two part body - has elastic partition diaphragm gripped between bead on one body half and ring on other half |
US4305428A (en) * | 1979-12-31 | 1981-12-15 | Hydril Company | Surge absorber |
FR2515761A1 (en) * | 1981-10-30 | 1983-05-06 | Milton Roy Dosapro | HYDROPNEUMATIC SHOCK ABSORBER |
JPH089325B2 (en) * | 1987-02-18 | 1996-01-31 | 日本エ−ビ−エス株式会社 | Hydraulic control device for anti-skid device |
JPH05116556A (en) * | 1991-10-30 | 1993-05-14 | Sumitomo Electric Ind Ltd | Controller for brake fluid pressure |
-
1995
- 1995-10-17 DE DE1995138615 patent/DE19538615B4/en not_active Expired - Lifetime
-
1996
- 1996-10-09 WO PCT/EP1996/004369 patent/WO1997014591A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3912935A1 (en) * | 1989-03-21 | 1990-12-06 | Teves Gmbh Alfred | BLOCK-PROTECTED, HYDRAULIC BRAKE SYSTEM |
DE4040277A1 (en) * | 1990-12-17 | 1992-06-25 | Bosch Gmbh Robert | SLIP CONTROL HYDRAULIC BRAKE SYSTEM, ESPECIALLY FOR MOTOR VEHICLES |
EP0539898A1 (en) * | 1991-10-30 | 1993-05-05 | Sumitomo Electric Industries, Limited | Brake fluid pressure control device |
US5410945A (en) * | 1993-08-17 | 1995-05-02 | Richard Schops | Pressure control device |
DE4336464A1 (en) * | 1993-10-26 | 1995-04-27 | Bosch Gmbh Robert | Hydraulic brake system |
WO1995011824A1 (en) * | 1993-10-26 | 1995-05-04 | Robert Bosch Gmbh | Hydraulic braking system |
Also Published As
Publication number | Publication date |
---|---|
WO1997014591A1 (en) | 1997-04-24 |
DE19538615A1 (en) | 1997-04-24 |
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