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WO2013091932A1 - Pressure pulsation damper for a vehicle brake system - Google Patents

Pressure pulsation damper for a vehicle brake system Download PDF

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Publication number
WO2013091932A1
WO2013091932A1 PCT/EP2012/070863 EP2012070863W WO2013091932A1 WO 2013091932 A1 WO2013091932 A1 WO 2013091932A1 EP 2012070863 W EP2012070863 W EP 2012070863W WO 2013091932 A1 WO2013091932 A1 WO 2013091932A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure pulsation
pulsation damper
vehicle brake
brake system
damper according
Prior art date
Application number
PCT/EP2012/070863
Other languages
German (de)
French (fr)
Inventor
Oliver Gaertner
Daniel Gosse
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 CN201280062798.1A priority Critical patent/CN104010898B/en
Publication of WO2013091932A1 publication Critical patent/WO2013091932A1/en

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Classifications

    • 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
    • B60T8/36—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 including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
    • 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

Definitions

  • the invention relates to a Druckpulsationsdampfer for a vehicle brake system.
  • pressure pulsation steamers are used to dampen the pressure pulsations in the associated hydraulic unit itself as well as in the rest of the vehicle brake system arising during the compression of the brake fluid by means of pump elements.
  • Such Druckpulsationsdampfer is known for example from DE 103 05 310 B4.
  • a pressure pulsation damper for a vehicle brake system in which the pressure pulsation damper is designed as a retrofittable or separately retrofittable unit on the vehicle brake system.
  • the pressure pulsation damper according to the invention provides a reduction in the pressure pulsations induced by pump elements on vehicle brake systems.
  • the pressure pulsation damper leads to a more uniform pressure build-up and an improved controllability of the wheel slip of associated wheels.
  • the control electronics used on the vehicle brake system can remain the same.
  • the pressure pulsation damper according to the invention is therefore particularly suitable for increasing the comfort of the driver due to a reduced vibration on the brake pedal in existing vehicle brake systems.
  • the pressure pulsation damper according to the invention allows a comfort increase in additional functions, such as an automatic Brakes, automatic distance control or similar.
  • the invention also subsequent optimization is also possible in vehicles with brake systems that allow recuperation of the braking energy. In particular, a particularly quiet loading of a
  • Recuperation advantageously a regenerative and hydraulically generated braking torque can be coupled.
  • a pressure pulsation damper according to the invention With the pressure pulsation damper according to the invention, the number of required hardware variants of vehicle brake systems can be greatly reduced. It is sufficient if a pressure pulsation damper according to the invention is arranged as a retrofittable or separately retrofittable structural unit on a vehicle brake system. In this case, various types and embodiments of such retrofittable or separately upgradable pressure pulsation dampers can be provided in a simple manner. Vehicle manufacturers can thus represent different comfort characteristics by means of one and the same hydraulic unit. For example, a vehicle brake system without a separately mounted pressure pulsation damper, one with pressure pulsation dampers on one axle, and one with pressure pulsation dampers on all four wheels may be provided. Furthermore, advantageously, a pressure pulsation damper can be arranged on a line between a master brake cylinder of the vehicle brake system and the hydraulic unit.
  • This advantage of optional improvement of a vehicle brake system can be used for both low cost and high quality systems.
  • the separately upgradable pressure pulsation damper according to the invention furthermore leads, as a common part for various vehicle brake systems, to a high ratio potential for the vehicle manufacturer on account of the so-called piece-count effect.
  • an inlet leading into a damping chamber and an outlet leading out of the damping chamber are provided, and a throttle device is provided between the damping chamber and the outlet.
  • the damping chamber and the throttle device are thus in series connected.
  • the damper chamber downstream of the throttle device leads to a pressure increase in a pressure increase in the damping chamber. This pressure increase can be used to increase the volume in the damping chamber while compressing a print energy absorbing element. Compared to an unthrottled system, the volume flow on the
  • the outlet is advantageously designed with a line connection to the master cylinder of the vehicle brake system.
  • a line can be coupled directly to such a pressure pulsation damper so that it forms a part or section of this line in a space-saving manner.
  • the pressure pulsation damper is therefore particularly suitable for being intermediately coupled or interposed between a conventional hydraulic unit and a brake line connected thereto conventionally.
  • the inlet is preferably designed with a line connection to the hydraulic unit of the vehicle brake system.
  • the throttle device is particularly preferably designed with a variable throttling effect.
  • the variable throttle effect can be designed by means of a diaphragm whose permeable opening area is variable.
  • a small, permanently open passage area and a passage area which can be varied with respect to its area are connected in parallel.
  • the passage surface, which is permanently open independently of the differential pressure, is advantageously provided on a spring-elastic main body itself.
  • this passage area can advantageously be formed as a depression on a support for the base body movably mounted there.
  • the pulsation-reducing effect is given in particular in the range of smaller volume flows, while in the region of large volumetric flows at the small, permanently open passage area with constant flow
  • Cross-sectional area makes it possible in this area large volume flows, which is also an area of high hydraulic power requirement, to reduce this power loss in an advantageous manner.
  • the variable throttle effect is advantageously variable as a function of the differential pressure at the throttle device.
  • the differential pressure arises in a damming of the flowing through the pressure pulsation damper volume flow upstream of the throttle device.
  • the flow-through cross-sectional area of the throttle device increases as a function of the increasing flow.
  • the throttle device is further preferably designed with a disk-shaped throttle element, which can release an annular throttle gap when varying the throttle effect.
  • a throttle element allows for the variability of the back pressure a wide margin
  • an elastic body As a damping element, an elastic body is particularly advantageous.
  • the elastic body absorbs potential energy as it is deformed and, upon recovery, converts it back into kinetic energy, which is returned to the flowing medium.
  • a brake fluid is preferably provided by a tubular body which is movable.
  • the tubular body can be particularly advantageously integrated as a line section in a line of the vehicle brake system. He thus creates a space-saving and at the same time a very flexible in various vehicle types usable improvement of the pressure situation of the vehicle brake system.
  • the function of the damping element is based on a tubular shape, which strives to expand as the pressure in the interior of the tube shape increases. If a medium flows through the inner cavity and if this volume flow is non-uniform, this results in an increase in pressure in the downstream throttle element. This pressure increase in turn leads to a volume absorption of the damping element harboring area.
  • the body is advantageously surrounded by a rigid housing, with one or more subdivided gas volumes between the body and the housing.
  • the gas volume is compressible. It creates an elasticity that contributes specifically to the desired damping effect.
  • the gas volume usually has a higher compressibility than the body itself. The gas volume is thus compressed when pressure is increased in the damping chamber as the first. When this is done completely, the body moves to the um- giving, rigid housing against attack. Only then is the body itself significantly compressed.
  • the gas volume can also be filled with a foam. With the housing, the elastic deformation of the elastic body is thus limited. At the same time, the volume of the gas-filled cavity is defined. It is thus to realize a stepped damping in the damping chamber.
  • the housing also serves to prevent the elastic body from being overstressed and to ensure the tightness of the brake system even in the event of a failure of the sealing function of the body itself.
  • FIG. 1 is a hydraulic circuit diagram of an arrangement of a Druckpulsationsdämpfers invention to a vehicle brake system
  • FIG. 2 shows a longitudinal section of a first embodiment of a pressure pulsation damper according to the invention
  • Fig. 3 is a longitudinal section of a second embodiment of a Druckpulsationsdämpfers invention
  • FIG. 4 shows a perspective view of a hydraulic unit of a vehicle brake system with four pressure pulsation dampers according to FIG. 2 or 3.
  • FIG. 1 shows an arrangement 10 of a vehicle brake system, in which a piston pump 14 is arranged on an inflow line 12.
  • the piston pump 14 is designed with two pump elements, not shown, which are driven by a drive motor 16 by means of an eccentric. During operation, the pump elements promote a brake fluid through the inflow line, wherein the fluid flow pulses due to the pump piston acting alternately on the pump elements.
  • the piston pump 14 is arranged in a hydraulic unit 44 shown in greater detail in FIG. 4 and conveys the pulsating fluid flow into an outflow line 18.
  • a pressure pulsation damper 20 is arranged on the outflow line 18.
  • the pressure pulsation damper 20 serves to smooth the pulsating flow and has a damping chamber 22 for this purpose, a throttle device 24 is connected downstream.
  • the throttle device 24 is designed with variable throttle effect.
  • Fig. 2 shows such a pressure pulsation damper 20 in detail.
  • This pressure pulsation damper 20 is designed as a separate or separately mountable structural unit and comprises a housing 26 for this purpose.
  • the damping chamber 22 In the housing 26 there is the damping chamber 22, into which an inlet and an outlet lead out.
  • the inlet is designed as a line connection 28 to the hydraulic unit 44 and is designed for this purpose with a threaded connector which can be screwed directly into the hydraulic unit 44 (see also FIG. 4).
  • the outlet is configured with a conduit port 30 to a wheel brake cylinder (not shown) of the vehicle brake system, which is designed as a threaded bore. Between the line connection 28 and the line connection 30 is connected to the
  • a line section 32 is formed in which a tubular, elastic body 34 is located.
  • the body 34 is surrounded by a gas-filled cavity 36 in the form of a hollow cylinder, which in turn adjoins the housing 26 from the inside.
  • the interior of the body 34 forms the damping chamber 22, wherein the body 34 can expand into the cavity 36 until it comes to rest against the inside of the housing 26.
  • the throttle device 24 is designed in the embodiment of FIG. 2 with a diaphragm 38 having a constant large passage opening for the brake fluid.
  • a housing 26 is likewise provided with a line connection 28 and a line connection 30 in the form of a screw thread.
  • the throttle chamber 22 In the housing 26 is the throttle chamber 22, which in turn is surrounded by a tubular body 34 and a surrounding cavity 36.
  • the damping chamber 22 of this embodiment of FIG. 3 is a throttle device 24 downstream, which is designed with an annular throttle element 40.
  • the annular throttle element 40 is supported by a holding element 42 and designed so flexible that it increases with increasing pressure in the Move damper chamber 22 and can release an increasingly opening annular gap to produce a variable throttle effect.
  • the hydraulic unit 44 comprises a block-shaped, made of aluminum hydraulic part 46, in which line bores and valves and the above-mentioned piston pump 14 are located. On the hydraulic part 46, therefore, the above-mentioned drive motor 16 is also mounted. On the hydraulic part 46, a control unit part 48 is placed, in which in particular solenoid coils and a control board are located.
  • the four pressure pulsation dampers 20 are screwed to the hydraulic part 46 as a respective unit that can be equipped separately, with their respective line connection 28 acting as an inlet.
  • the threaded connector of the conduit connection 28 is screwed into an associated threaded bore (not shown) on the hydraulic part 46, which may alternatively serve to connect a brake line.
  • two Druckpulsationsdämpfer 20 are provided, which are each arranged individually in a line leading to a master cylinder. These two pressure pulsation dampers 20 are arranged on the side facing the drive motor 16 side of the hydraulic part 46 at an associated connection position 50.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

According to the invention, a pressure pulsation damper (20) for a vehicle brake system is characterized in that it is formed as a structural unit that can be fitted separately on the vehicle brake system.

Description

Beschreibung Titel  Description title
Druckpulsationsdampfer für eine Fahrzeugbremsanlage Stand der Technik  Druckpulsationsdampfer for a vehicle brake system prior art
Die Erfindung betrifft einen Druckpulsationsdampfer für eine Fahrzeugbremsanlage. The invention relates to a Druckpulsationsdampfer for a vehicle brake system.
Bei bekannten Fahrzeugbremsanlagen werden Druckpulsationsdampfer verwendet, um die bei der Verdichtung der Bremsflüssigkeit mittels Pumpenelementen entstehenden Druckpulsationen im zugehörigen Hydraulikaggregat selbst sowie in der restlichen Fahrzeugbremsanlage zu dämpfen. Ein derartiger Druckpulsationsdampfer ist beispielsweise aus DE 103 05 310 B4 bekannt. In known vehicle brake systems, pressure pulsation steamers are used to dampen the pressure pulsations in the associated hydraulic unit itself as well as in the rest of the vehicle brake system arising during the compression of the brake fluid by means of pump elements. Such Druckpulsationsdampfer is known for example from DE 103 05 310 B4.
Offenbarung der Erfindung Disclosure of the invention
Erfindungsgemäß ist ein Druckpulsationsdämpfer für eine Fahrzeugbremsanlage geschaffen, bei dem der Druckpulsationsdämpfer als eine an der Fahrzeugbremsanlage nachrüstbare bzw. separat rüstbare Baueinheit gestaltet ist. According to the invention, a pressure pulsation damper for a vehicle brake system is provided in which the pressure pulsation damper is designed as a retrofittable or separately retrofittable unit on the vehicle brake system.
Der erfindungsgemäße Druckpulsationsdämpfer schafft als Baueinheit eine Verringerung der durch Pumpenelemente an Fahrzeugbremsanlagen induzierten Druckpulsationen. Dabei führt der Druckpulsationsdämpfer zu einem gleichmäßigeren Druckaufbau und einer verbesserten Regelbarkeit des Radschlupfes zugehöriger Räder. Die an der Fahrzeugbremsanlage verwendete Regelungselektronik kann dabei gleich bleiben. Der erfindungsgemäße Druckpulsationsdämpfer eignet sich daher insbesondere für die Komfortsteigerung für den Fahrer aufgrund einer reduzierten Vibration am Bremspedal bei bestehenden Fahrzeugbremsanlagen. Ferner ermöglicht der erfindungsgemäße Druckpulsationsdämpfer eine Komfortsteigerung bei Zusatzfunktionen, wie einem automatischen Bremsen, einer automatischen Abstandsregelung oder ähnlichem. Die erfindungsgemäße, auch nachträgliche Optimierung ist ferner bei Fahrzeugen mit Bremssystemen möglich, die ein Rekuperieren der Bremsenergie ermöglichen. Dabei ist insbesondere ein besonders leises Laden eines As a structural unit, the pressure pulsation damper according to the invention provides a reduction in the pressure pulsations induced by pump elements on vehicle brake systems. In this case, the pressure pulsation damper leads to a more uniform pressure build-up and an improved controllability of the wheel slip of associated wheels. The control electronics used on the vehicle brake system can remain the same. The pressure pulsation damper according to the invention is therefore particularly suitable for increasing the comfort of the driver due to a reduced vibration on the brake pedal in existing vehicle brake systems. Furthermore, the pressure pulsation damper according to the invention allows a comfort increase in additional functions, such as an automatic Brakes, automatic distance control or similar. The invention, also subsequent optimization is also possible in vehicles with brake systems that allow recuperation of the braking energy. In particular, a particularly quiet loading of a
Rekuperationsspeichers sowie ein sehr leiser Druckaufbau bei teil- oder vollelektronischen Bremssystemen möglich. Dadurch kann auch während der Recuperation memory and a very quiet pressure build-up in partially or fully electronic braking systems possible. This can also be done during the
Rekuperation vorteilhaft ein generatorisch und hydraulisch erzeugtes Bremsmoment gekoppelt werden. Recuperation advantageously a regenerative and hydraulically generated braking torque can be coupled.
Mit dem erfindungsgemäßen Druckpulsationsdämpfer kann die Zahl erforderlicher Hardware-Varianten von Fahrzeugbremssystemen stark verringert werden. Es reicht aus, wenn an einem Fahrzeugbremssystem ein erfindungsgemäßer Druckpulsationsdämpfer als nachträglich bzw. separat rüstbare Baueinheit angeordnet wird. Dabei können in einfacher Weise verschiedene Typen und Ausführungsformen solcher nachrüstbarer bzw. separat rüstbarer Druckpulsationsdämpfer zur Verfügung gestellt werden. Fahrzeughersteller können so verschiedene Komfort-Ausprägungen mittels ein und desselben Hydraulikaggregats darstellen. Es kann beispielsweise eine Fahrzeugbremsanlage ohne separat angebrachtem Druckpulsationsdämpfer, eine mit Druckpulsationsdämpfern an einer Achse und eine mit Druckpulsationsdämpfern an allen vier Rädern vorgesehen werden. Ferner kann vorteilhaft ein Druckpulsationsdämpfer an einer Leitung zwischen einem Hauptbremszylinder des Fahrzeugbremssystems und dem Hydraulikaggregat angeordnet werden. With the pressure pulsation damper according to the invention, the number of required hardware variants of vehicle brake systems can be greatly reduced. It is sufficient if a pressure pulsation damper according to the invention is arranged as a retrofittable or separately retrofittable structural unit on a vehicle brake system. In this case, various types and embodiments of such retrofittable or separately upgradable pressure pulsation dampers can be provided in a simple manner. Vehicle manufacturers can thus represent different comfort characteristics by means of one and the same hydraulic unit. For example, a vehicle brake system without a separately mounted pressure pulsation damper, one with pressure pulsation dampers on one axle, and one with pressure pulsation dampers on all four wheels may be provided. Furthermore, advantageously, a pressure pulsation damper can be arranged on a line between a master brake cylinder of the vehicle brake system and the hydraulic unit.
Dieser Vorteil einer wahlweisen Verbesserung eines Fahrzeugbremssystems kann sowohl für kostengünstige als auch besonders hochwertige Systeme zum Einsatz kommen. This advantage of optional improvement of a vehicle brake system can be used for both low cost and high quality systems.
Der erfindungsgemäße separat rüstbare Druckpulsationsdämpfer führt ferner als Gleichteil für verschiedene Fahrzeugbremsanlagen aufgrund des so genannten Stückzahleffekts zu einem großen Ratiopotential für den Fahrzeughersteller. The separately upgradable pressure pulsation damper according to the invention furthermore leads, as a common part for various vehicle brake systems, to a high ratio potential for the vehicle manufacturer on account of the so-called piece-count effect.
Vorzugsweise sind ein in eine Dämpfungskammer hineinführender Einlass und ein aus der Dämpfungskammer herausführender Auslass vorgesehen und zwischen der Dämpfungskammer und dem Auslass ist eine Drosseleinrichtung vorgesehen. Die Dämpfungskammer und die Drosseleinrichtung sind also in Reihe geschaltet. Die der Dämpfungskammer nachgeschaltete Drosseleinrichtung führt bei einer Druckpulsation zu einer Druckerhöhung in der Dämpfungskammer. Diese Druckerhöhung kann zu einer Volumenaufnahme in der Dämpfungskammer unter Kompression eines druckenergieaufnehmenden Elements genutzt werden. Im Vergleich zu einem ungedrosselten System wird dabei der Volumenstrom amPreferably, an inlet leading into a damping chamber and an outlet leading out of the damping chamber are provided, and a throttle device is provided between the damping chamber and the outlet. The damping chamber and the throttle device are thus in series connected. The damper chamber downstream of the throttle device leads to a pressure increase in a pressure increase in the damping chamber. This pressure increase can be used to increase the volume in the damping chamber while compressing a print energy absorbing element. Compared to an unthrottled system, the volume flow on the
Auslass des Druckpulsationsdämpfers gleichförmiger, da ein Teil der Pulsation gepuffert wird. Outlet of Druckpulsationsdämpfers uniform, since a part of the pulsation is buffered.
Der Auslass ist vorteilhaft mit einem Leitungsanschluss zum Hauptbremszylinder der Fahrzeugbremsanlage gestaltet. An dem derartigen Druckpulsationsdämpfer kann unmittelbar eine Leitung angekoppelt werden, so dass dieser bauraumsparend einen Teil bzw. Abschnitt dieser Leitung bildet. Der Druckpulsationsdämpfer eignet sich daher besonders dazu, zwischen einem herkömmlichen Hydraulikaggregat und einer daran herkömmlich angeschlossenen Bremsleitung zwischen- gekoppelt bzw. zwischengeschaltet zu werden. The outlet is advantageously designed with a line connection to the master cylinder of the vehicle brake system. A line can be coupled directly to such a pressure pulsation damper so that it forms a part or section of this line in a space-saving manner. The pressure pulsation damper is therefore particularly suitable for being intermediately coupled or interposed between a conventional hydraulic unit and a brake line connected thereto conventionally.
Entsprechend ist der Einlass bevorzugt mit einem Leitungsanschluss zum Hydraulikaggregat der Fahrzeugbremsanlage gestaltet. Die Drosseleinrichtung ist besonders bevorzugt mit einer variablen Drosselwirkung gestaltet. Die variable Drosselwirkung kann mittels einer Blende gestaltet sein, deren durchlässige Öffnungsfläche veränderbar ist. Besonders bevorzugt ist eine kleine permanent offene Durchlassfläche und eine hinsichtlich ihrer Fläche veränderbare Durchlassfläche parallel geschaltet. Die unabhängig vom Diffe- renzdruck permanent offenen Durchlassfläche ist vorteilhaft an einem federelastischen Grundkörper selbst vorgesehen. Ferner kann diese Durchlassfläche vorteilhaft als Vertiefung an einem Auflager für den dort beweglich gelagerten Grundkörper ausgebildet sein. Die pulsationsmindernde Wirkung ist insbesondere im Bereich kleinerer Volumenströme gegeben, während im Bereich großer Vo- lumenströme an der kleinen permanent offenen Durchlassfläche mit konstantemAccordingly, the inlet is preferably designed with a line connection to the hydraulic unit of the vehicle brake system. The throttle device is particularly preferably designed with a variable throttling effect. The variable throttle effect can be designed by means of a diaphragm whose permeable opening area is variable. Particularly preferably, a small, permanently open passage area and a passage area which can be varied with respect to its area are connected in parallel. The passage surface, which is permanently open independently of the differential pressure, is advantageously provided on a spring-elastic main body itself. Furthermore, this passage area can advantageously be formed as a depression on a support for the base body movably mounted there. The pulsation-reducing effect is given in particular in the range of smaller volume flows, while in the region of large volumetric flows at the small, permanently open passage area with constant flow
Strömungsquerschnitt viel hydraulische Leistung abfällt. Die variable Flow cross-section much hydraulic power drops. The variable
Querschnittsfläche ermöglicht es in diesem Bereich großer Volumenströme, der zugleich ein Bereich hoher hydraulischer Leistungsanforderung ist, diese Verlustleistung in vorteilhafter Weise zu reduzieren. Die variable Drosselwirkung ist vorteilhaft in Abhängigkeit des Differenzdruckes an der Drosseleinrichtung veränderbar. Der Differenzdruck entsteht bei einem Aufstauen des durch den Druckpulsationsdämpfer strömenden Volumenstroms vor der Drosseleinrichtung. Die durchströmbare Querschnittsfläche der Drossel- einrichtung vergrößert sich in Abhängigkeit des steigenden Durchflusses. Cross-sectional area makes it possible in this area large volume flows, which is also an area of high hydraulic power requirement, to reduce this power loss in an advantageous manner. The variable throttle effect is advantageously variable as a function of the differential pressure at the throttle device. The differential pressure arises in a damming of the flowing through the pressure pulsation damper volume flow upstream of the throttle device. The flow-through cross-sectional area of the throttle device increases as a function of the increasing flow.
Die Drosseleinrichtung ist ferner bevorzugt mit einem scheibenförmigen Drosselelement gestaltet, welches bei einem Variieren der Drosselwirkung einen ringförmigen Drosselspalt freigeben kann. Das derartige Drosselelement ermöglicht hinsichtlich der Variabilität des Gegendrucks einen breiten Spielraum The throttle device is further preferably designed with a disk-shaped throttle element, which can release an annular throttle gap when varying the throttle effect. Such a throttle element allows for the variability of the back pressure a wide margin
Als Dämpfungselement ist besonders vorteilhaft ein elastischer Körper vorgesehen. Der elastische Körper nimmt bei seiner Verformung potentielle Energie auf und wandelt sie bei Rückformung in kinetische Energie zurück, welche auf das strömende Medium zurückgegeben wird. As a damping element, an elastic body is particularly advantageous. The elastic body absorbs potential energy as it is deformed and, upon recovery, converts it back into kinetic energy, which is returned to the flowing medium.
Als Dämpfungselement ist bevorzugt ein von Bremsfluid durch ström barer, rohr- förmiger Körper vorgesehen. Der rohrformige Körper kann besonders vorteilhaft als Leitungsabschnitt in einer Leitung der Fahrzeugbremsanlage integriert wer- den. Er schafft somit eine bauraumsparende und zugleich eine bei verschiedenen Fahrzeugtypen sehr flexibel verwendbare Verbesserung der Drucksituation der Fahrzeugbremsanlage. Die Funktion des Dämpfungselements beruht auf einer schlauchförmigen Form, die bestrebt ist sich bei Steigerung des Drucks im Innenraum der Schlauchform auszudehnen. Durchströmt ein Medium den inne- ren Hohlraum und ist dieser Volumenstrom ungleichförmig, so resultiert dies in dem nachgeschalteten Drosselelement in einer Druckerhöhung. Diese Druckerhöhung wiederum führt zu einer Volumenaufnahme des das Dämpfungselement beherbergenden Bereichs. Der Körper ist vorteilhaft von einem starren Gehäuse umgeben, wobei sich zwischen dem Körper und dem Gehäuse ein oder mehrere unterteilte Gasvolumen befinden. Das Gasvolumen ist kompressibel. Es schafft eine Elastizität, die gezielt zu der gewünschten Dämpfungswirkung beiträgt. Ferner weist das Gasvolumen in der Regel eine höhere Kompressibilität als der Körper selbst auf. Das Gasvolumen wird also bei Druckerhöhung in der Dämpfungskammer als erstes komprimiert. Wenn dies vollständig geschehen ist, fährt der Körper an dem um- gebenden, starren Gehäuse gegen Anschlag. Erst dann wird der Körper selbst nennenswert komprimiert. Das Gasvolumen kann auch mit einem Schaum gefüllt sein. Mit dem Gehäuse ist die elastische Verformung des elastischen Körpers also begrenzt. Zugleich ist das Volumen des mit Gas gefüllten Hohlraums definiert. Es ist somit eine gestufte Dämpfung in der Dämpfungskammer zu realisieren. In Kombination mit der genannten variablen Drossel ergibt sich insgesamt ein besonders breiter Dämpfungsbereich, wie er mit bekannten Druckpulsationsdämp- fern bisher nicht erreichbar war. Das Gehäuse dient ferner dazu zu verhindern, dass der elastische Körper überbeansprucht wird, und die Dichtheit des Bremssystems auch im Falle eines Versagens der Dichtungsfunktion des Körpers selbst sicherzustellen. As the damping element, a brake fluid is preferably provided by a tubular body which is movable. The tubular body can be particularly advantageously integrated as a line section in a line of the vehicle brake system. He thus creates a space-saving and at the same time a very flexible in various vehicle types usable improvement of the pressure situation of the vehicle brake system. The function of the damping element is based on a tubular shape, which strives to expand as the pressure in the interior of the tube shape increases. If a medium flows through the inner cavity and if this volume flow is non-uniform, this results in an increase in pressure in the downstream throttle element. This pressure increase in turn leads to a volume absorption of the damping element harboring area. The body is advantageously surrounded by a rigid housing, with one or more subdivided gas volumes between the body and the housing. The gas volume is compressible. It creates an elasticity that contributes specifically to the desired damping effect. Furthermore, the gas volume usually has a higher compressibility than the body itself. The gas volume is thus compressed when pressure is increased in the damping chamber as the first. When this is done completely, the body moves to the um- giving, rigid housing against attack. Only then is the body itself significantly compressed. The gas volume can also be filled with a foam. With the housing, the elastic deformation of the elastic body is thus limited. At the same time, the volume of the gas-filled cavity is defined. It is thus to realize a stepped damping in the damping chamber. Overall, in combination with the variable throttle mentioned, a particularly broad damping range results, which was previously not achievable with known pressure pulsation dampers. The housing also serves to prevent the elastic body from being overstressed and to ensure the tightness of the brake system even in the event of a failure of the sealing function of the body itself.
Nachfolgend wird ein Ausführungsbeispiel der erfindungsgemäßen Lösung anhand der beigefügten schematischen Zeichnungen näher erläutert. Es zeigt: An exemplary embodiment of the solution according to the invention will be explained in more detail below with reference to the attached schematic drawings. It shows:
Fig. 1 einen hydraulischen Schaltplan einer Anordnung eines erfindungsgemäßen Druckpulsationsdämpfers an einer Fahrzeugbremsanlage,1 is a hydraulic circuit diagram of an arrangement of a Druckpulsationsdämpfers invention to a vehicle brake system,
Fig. 2 einen Längsschnitt eines ersten Ausführungsbeispiels eines erfindungsgemäßen Druckpulsationsdämpfers, 2 shows a longitudinal section of a first embodiment of a pressure pulsation damper according to the invention,
Fig. 3 einen Längsschnitt eines zweiten Ausführungsbeispiels eines erfindungsgemäßen Druckpulsationsdämpfers und  Fig. 3 is a longitudinal section of a second embodiment of a Druckpulsationsdämpfers invention and
Fig. 4 eine perspektivische Ansicht eines Hydraulikaggregats einer Fahrzeugbremsanlage mit vier Druckpulsationsdämpfern nach Fig. 2 oder 3.  4 shows a perspective view of a hydraulic unit of a vehicle brake system with four pressure pulsation dampers according to FIG. 2 or 3.
In Fig. 1 ist eine Anordnung 10 einer Fahrzeugbremsanlage dargestellt, bei der an einer Zuströmleitung 12 eine Kolbenpumpe 14 angeordnet ist. Die Kolbenpumpe 14 ist mit zwei nicht näher dargestellten Pumpenelementen gestaltet, die von einem Antriebsmotor 16 mittels eines Exzenters angetrieben sind. Die Pumpenelemente fördern im Betrieb ein Bremsfluid durch die Zuströmleitung, wobei die Fluidströmung aufgrund der an den Pumpenelementen alternierend wirkenden Pumpenkolben pulsiert. Die Kolbenpumpe 14 ist in einem in Fig. 4 näher dargestellten Hydraulikaggregat 44 angeordnet und fördert den pulsierenden Fluidstrom in eine Abströmleitung 18. An der Abströmleitung 18 ist ein Druckpul- sationsdämpfer 20 angeordnet. Der Druckpulsationsdämpfer 20 dient zum Glätten der pulsierenden Strömung und weist dazu eine Dämpfungskammer 22 auf, der eine Drosseleinrichtung 24 nachgeschaltet ist. Die Drosseleinrichtung 24 ist dabei mit variabler Drosselwirkung gestaltet. 1 shows an arrangement 10 of a vehicle brake system, in which a piston pump 14 is arranged on an inflow line 12. The piston pump 14 is designed with two pump elements, not shown, which are driven by a drive motor 16 by means of an eccentric. During operation, the pump elements promote a brake fluid through the inflow line, wherein the fluid flow pulses due to the pump piston acting alternately on the pump elements. The piston pump 14 is arranged in a hydraulic unit 44 shown in greater detail in FIG. 4 and conveys the pulsating fluid flow into an outflow line 18. A pressure pulsation damper 20 is arranged on the outflow line 18. The pressure pulsation damper 20 serves to smooth the pulsating flow and has a damping chamber 22 for this purpose, a throttle device 24 is connected downstream. The throttle device 24 is designed with variable throttle effect.
Die Fig. 2 zeigt einen solchen Druckpulsationsdämpfer 20 im Detail. Dieser Druckpulsationsdämpfer 20 ist als separate bzw. getrennt montierbare Baueinheit gestaltet und umfasst dazu ein Gehäuse 26. In dem Gehäuse 26 befindet sich die Dämpfungskammer 22, in die ein Einlass hinein- und ein Auslass hinausführt. Der Einlass ist als Leitungsanschluss 28 zum Hydraulikaggregat 44 gestaltet und ist dazu mit einem Gewindestutzen gestaltet, der direkt in das Hydraulik- aggregat 44 verschraubbar ist (siehe auch Fig. 4). In ähnlicher Weise ist der Auslass mit einem Leitungsanschluss 30 zu einem Radbremszylinder (nicht dargestellt) der Fahrzeugbremsanlage gestaltet, der als eine Gewindebohrung gestaltet ist. Zwischen dem Leitungsanschluss 28 und dem Leitungsanschluss 30 ist mit demFig. 2 shows such a pressure pulsation damper 20 in detail. This pressure pulsation damper 20 is designed as a separate or separately mountable structural unit and comprises a housing 26 for this purpose. In the housing 26 there is the damping chamber 22, into which an inlet and an outlet lead out. The inlet is designed as a line connection 28 to the hydraulic unit 44 and is designed for this purpose with a threaded connector which can be screwed directly into the hydraulic unit 44 (see also FIG. 4). Similarly, the outlet is configured with a conduit port 30 to a wheel brake cylinder (not shown) of the vehicle brake system, which is designed as a threaded bore. Between the line connection 28 and the line connection 30 is connected to the
Gehäuse 26 ein Leitungsabschnitt 32 gebildet, in dem sich ein rohrförmiger, elastischer Körper 34 befindet. Der Körper 34 ist von einem mit Gas gefüllten Hohlraum 36 in Form eines Hohlzylinders umgeben, der seinerseits von innen an das Gehäuse 26 grenzt. Das Innere des Körpers 34 bildet die Dämpfungskammer 22, wobei der Körper 34 sich in den Hohlraum 36 hinein ausdehnen kann, bis er an der Innenseite des Gehäuses 26 zum Anliegen kommt. Housing 26, a line section 32 is formed in which a tubular, elastic body 34 is located. The body 34 is surrounded by a gas-filled cavity 36 in the form of a hollow cylinder, which in turn adjoins the housing 26 from the inside. The interior of the body 34 forms the damping chamber 22, wherein the body 34 can expand into the cavity 36 until it comes to rest against the inside of the housing 26.
In Strömungsrichtung hinter der Dämpfungskammer 22 ist bei dem Ausführungsbeispiel gemäß Fig. 2 die Drosseleinrichtung 24 mit einer Blende 38 gestaltet, die eine konstant große Durchtrittsöffnung für das Bremsfluid aufweist. In the flow direction behind the damping chamber 22, the throttle device 24 is designed in the embodiment of FIG. 2 with a diaphragm 38 having a constant large passage opening for the brake fluid.
Bei dem Ausführungsbeispiel gemäß Fig. 3 eines Druckpulsationsdämpfers 20 ist ebenfalls eine Gehäuse 26 mit einem Leitungsanschluss 28 und einem Leitungsanschluss 30 in Form eines Schraubgewindes vorgesehen. In dem Gehäuse 26 befindet sich die Drosselkammer 22, die wiederum mit einem rohrförmigen Körper 34 und einem diesen umgebenden Hohlraum 36 umgeben ist. Der Dämpfungskammer 22 dieses Ausführungsbeispiels gemäß Fig. 3 ist eine Drosseleinrichtung 24 nachgeschaltet, die mit einem ringförmigen Drosselelement 40 gestaltet ist. Das ringförmige Drosselelement 40 ist mit einem Halteelement 42 ab- gestützt und derart flexibel gestaltet, dass es sich bei steigendem Druck in der Dämpfungskammer 22 bewegen und zum Erzeugen einer variablen Drosselwirkung einen sich zunehmend öffnenden Ringspalt freigeben kann. In the embodiment according to FIG. 3 of a pressure pulsation damper 20, a housing 26 is likewise provided with a line connection 28 and a line connection 30 in the form of a screw thread. In the housing 26 is the throttle chamber 22, which in turn is surrounded by a tubular body 34 and a surrounding cavity 36. The damping chamber 22 of this embodiment of FIG. 3 is a throttle device 24 downstream, which is designed with an annular throttle element 40. The annular throttle element 40 is supported by a holding element 42 and designed so flexible that it increases with increasing pressure in the Move damper chamber 22 and can release an increasingly opening annular gap to produce a variable throttle effect.
In Fig. 4 ist die Anbringung von vier Druckpulsationsdampfern 20 gemäß den Fig. 2 oder 3 an einem Hydraulikaggregat 44 einer weiter nicht veranschaulichten Fahrzeugbremsanlage eines Personenkraftwagens dargestellt. Das Hydraulikaggregat 44 umfasst einen blockförmigen, aus Aluminium hergestellten Hydraulikteil 46, in dem sich Leitungsbohrungen und Ventile sowie die oben genannte Kolbenpumpe 14 befinden. An dem Hydraulikteil 46 ist daher auch der oben erwähnte Antriebsmotor 16 angebracht. Auf dem Hydraulikteil 46 ist ein Steuergeräteteil 48 aufgesetzt, in dem sich insbesondere Magnetspulen sowie eine Steuerungsplatine befinden. 4, the attachment of four Druckpulsationsdampfern 20 shown in FIGS. 2 or 3 to a hydraulic unit 44 of a not further illustrated vehicle brake system of a passenger car. The hydraulic unit 44 comprises a block-shaped, made of aluminum hydraulic part 46, in which line bores and valves and the above-mentioned piston pump 14 are located. On the hydraulic part 46, therefore, the above-mentioned drive motor 16 is also mounted. On the hydraulic part 46, a control unit part 48 is placed, in which in particular solenoid coils and a control board are located.
Die vier Druckpulsationsdämpfer 20 sind als jeweils separat rüstbare Baueinheit mit jeweils ihrem als Einlass wirkenden Leitungsanschluss 28 an dem Hydraulikteil 46 angeschraubt. Dabei ist der Gewindestutzen des Leitungsanschlusses 28 in eine zugehörige Gewindebohrung (nicht dargestellt) am Hydraulikteil 46 eingeschraubt, die alternativ zum Anschließen einer Bremsleitung dienen kann. The four pressure pulsation dampers 20 are screwed to the hydraulic part 46 as a respective unit that can be equipped separately, with their respective line connection 28 acting as an inlet. In this case, the threaded connector of the conduit connection 28 is screwed into an associated threaded bore (not shown) on the hydraulic part 46, which may alternatively serve to connect a brake line.
Bei einer nicht dargestellten Variante dieses Hydraulikaggregats 44 sind zwei Druckpulsationsdämpfer 20 vorgesehen, welche einzeln je in einer zu einem Hauptbremszylinder führenden Leitung angeordnet sind. Diese beiden Druckpulsationsdämpfer 20 sind dazu an der zum Antriebsmotor 16 gewandten Seite des Hydraulikteils 46 an einer zugehörigen Anschlussposition 50 angeordnet. In a variant of this hydraulic unit 44, not shown, two Druckpulsationsdämpfer 20 are provided, which are each arranged individually in a line leading to a master cylinder. These two pressure pulsation dampers 20 are arranged on the side facing the drive motor 16 side of the hydraulic part 46 at an associated connection position 50.

Claims

Ansprüche claims
1 . Druckpulsationsdampfer (20) für eine Fahrzeugbremsanlage 1 . Pressure pulsation steam generator (20) for a vehicle brake system
dadurch gekennzeichnet, dass der Druckpulsationsdampfer (20) als eine an der Fahrzeugbremsanlage separat rüstbare Baueinheit gestaltet ist.  characterized in that the Druckpulsationsdampfer (20) is designed as a separately upgradable to the vehicle brake system assembly.
2. Druckpulsationsdampfer nach Anspruch 1 , 2. pressure pulsation steamer according to claim 1,
dadurch gekennzeichnet, dass ein in eine Dämpfungskammer (22) hineinführender Einlass (28) und ein aus der Dämpfungskammer (22) herausführender Auslass (30) vorgesehen sind und zwischen der Dämpfungskammer (22) und dem Auslass (30) eine Drosseleinrichtung (24) vorgesehen ist.  characterized in that an inlet (28) leading into a damping chamber (22) and an outlet (30) leading out of the damping chamber (22) are provided, and a throttle device (24) is provided between the damping chamber (22) and the outlet (30) is.
3. Druckpulsationsdämpfer nach Anspruch 2, 3. pressure pulsation damper according to claim 2,
dadurch gekennzeichnet, dass der Auslass (30) mit einem Leitungsanschluss zu einem Radbremszylinder oder zu einem Hauptbremszylinder der Fahrzeugbremsanlage gestaltet ist.  characterized in that the outlet (30) is designed with a line connection to a wheel brake cylinder or to a master cylinder of the vehicle brake system.
4. Druckpulsationsdämpfer nach Anspruch 2 oder 3, 4. pressure pulsation damper according to claim 2 or 3,
dadurch gekennzeichnet, dass der Einlass (28) mit einem Leitungsanschluss zu einem Hydraulikaggregat der Fahrzeugbremsanlage gestaltet ist.  characterized in that the inlet (28) is designed with a line connection to a hydraulic unit of the vehicle brake system.
5. Druckpulsationsdämpfer nach einem der Ansprüche 1 bis 4, 5. pressure pulsation damper according to one of claims 1 to 4,
dadurch gekennzeichnet, dass die Drosseleinrichtung (24) mit einer variablen Drosselwirkung gestaltet ist.  characterized in that the throttle device (24) is designed with a variable throttle effect.
6. Druckpulsationsdämpfer nach Anspruch 5, 6. pressure pulsation damper according to claim 5,
dadurch gekennzeichnet, dass die variable Drosselwirkung in Abhängigkeit des Volumenstroms durch den Druckpulsationsdämpfer (20) veränderbar ist.  characterized in that the variable throttle effect in dependence of the volume flow through the pressure pulsation damper (20) is variable.
7. Druckpulsationsdämpfer nach Anspruch 5 oder 6, 7. pressure pulsation damper according to claim 5 or 6,
dadurch gekennzeichnet, dass die Drosseleinrichtung mit einem ringförmigen oder scheibenförmigen Drosselelement (40) gestaltet ist, welches bei einem Variieren der Drosselwirkung einen ringförmigen Drosselspalt freigeben kann. characterized in that the throttle device is designed with an annular or disc-shaped throttle element (40), which at a varying of the throttle effect can release an annular throttle gap.
8. Druckpulsationsdämpfer nach einem der Ansprüche 1 bis 7, 8. pressure pulsation damper according to one of claims 1 to 7,
dadurch gekennzeichnet, dass als Dämpfungselement ein elastischer Körper (34) vorgesehen ist.  characterized in that a resilient body (34) is provided as the damping element.
9. Druckpulsationsdämpfer nach einem der Ansprüche 1 bis 8, 9. pressure pulsation damper according to one of claims 1 to 8,
dadurch gekennzeichnet, dass als Dämpfungselement ein von Bremsfluid durchströmbarer, rohrförmiger Körper (34) vorgesehen ist.  characterized in that as a damping element through which a flow of brake fluid, tubular body (34) is provided.
10. Druckpulsationsdämpfer nach Anspruch 8 oder 9, 10. pressure pulsation damper according to claim 8 or 9,
dadurch gekennzeichnet, dass der Körper (34) von einem starren Gehäuse (26) umgeben ist und sich zwischen dem Körper (34) und dem Gehäuse (26) ein Gasvolumen befindet.  characterized in that the body (34) is surrounded by a rigid housing (26) and there is a volume of gas between the body (34) and the housing (26).
PCT/EP2012/070863 2011-12-20 2012-10-22 Pressure pulsation damper for a vehicle brake system WO2013091932A1 (en)

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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102179491B1 (en) * 2014-04-15 2020-11-16 주식회사 만도 Pulse reducing apparatus of hydraulic piston pump
DE102014209414A1 (en) * 2014-05-19 2015-11-19 Robert Bosch Gmbh Slip-adjustable vehicle brake system
DE102014209682A1 (en) 2014-05-21 2015-11-26 Robert Bosch Gmbh damping device
CN104930294B (en) * 2015-04-23 2017-03-22 广东电网有限责任公司电力科学研究院 Damping pipe fitting for pulse monitoring
DE102015220294A1 (en) 2015-10-19 2017-04-20 Robert Bosch Gmbh Damping device, in particular for damping pressure pulsations in a brake circuit of a slip-controllable vehicle brake system
DE102017213322A1 (en) * 2017-08-02 2019-02-07 Robert Bosch Gmbh Damper device of a hydraulic unit of a vehicle brake device with a damper chamber
DE102018219605A1 (en) * 2018-07-07 2020-01-09 Robert Bosch Gmbh Bremssystemdämpfvorrichtung
JP7226175B2 (en) * 2019-07-31 2023-02-21 トヨタ自動車株式会社 Piping and brake system
DE102019212350A1 (en) * 2019-08-19 2021-04-01 Robert Bosch Gmbh Brake system damping device with a passage in a separating element
DE102020104034A1 (en) 2020-02-17 2021-08-19 Mann+Hummel Gmbh Acoustic component and air duct with an acoustic component
DE102020208282A1 (en) * 2020-07-02 2022-01-05 Robert Bosch Gesellschaft mit beschränkter Haftung Hydraulic damping device, in particular for damping delivery flow pulsations and pressure pulses in a pressure medium flow within a brake circuit of a brake control system of a motor vehicle and electronically slip-controllable brake system for a motor vehicle with such a hydraulic damping device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2643860A1 (en) * 1976-09-29 1978-03-30 Bosch Gmbh Robert HYDRAULIC SYSTEM
DE3924085A1 (en) * 1989-05-06 1991-01-24 Teves Gmbh Alfred Controlled-slip braking system esp. for motor vehicle - has noise-abating elastomer tubing with defined vol. expansion and throughflow length within pump housing
DE4128386A1 (en) * 1991-08-27 1993-03-04 Bosch Gmbh Robert Vehicular hydraulic braking system with wheel-slip control arrangement - has unpressurised passive brake fluid reservoirs connected on master cylinder side to wheel brake supply lines
DE4213524A1 (en) * 1992-04-24 1993-10-28 Bosch Gmbh Robert Hydraulic brake and wheel slip control for vehicle - has reflection dampers in pipe lines to counteract pump pressure waves
DE19642792A1 (en) * 1996-10-17 1998-04-23 Bosch Gmbh Robert Hydraulic vehicle brake fluid pressure damper
DE4336464B4 (en) * 1993-10-26 2005-11-17 Robert Bosch Gmbh Hydraulic brake system
DE10305310B4 (en) 2003-02-10 2005-11-24 Robert Bosch Gmbh Device for damping pressure pulsations

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923282C2 (en) * 1989-07-14 1998-04-30 Bosch Gmbh Robert Device for damping pressure vibrations
DE4134427A1 (en) * 1991-10-18 1993-04-22 Teves Gmbh Alfred BLOCK-PROTECTED HYDRAULIC BRAKE SYSTEM
JP2008179270A (en) * 2007-01-25 2008-08-07 Toyota Motor Corp Brake pedal reaction force generator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2643860A1 (en) * 1976-09-29 1978-03-30 Bosch Gmbh Robert HYDRAULIC SYSTEM
DE3924085A1 (en) * 1989-05-06 1991-01-24 Teves Gmbh Alfred Controlled-slip braking system esp. for motor vehicle - has noise-abating elastomer tubing with defined vol. expansion and throughflow length within pump housing
DE4128386A1 (en) * 1991-08-27 1993-03-04 Bosch Gmbh Robert Vehicular hydraulic braking system with wheel-slip control arrangement - has unpressurised passive brake fluid reservoirs connected on master cylinder side to wheel brake supply lines
DE4213524A1 (en) * 1992-04-24 1993-10-28 Bosch Gmbh Robert Hydraulic brake and wheel slip control for vehicle - has reflection dampers in pipe lines to counteract pump pressure waves
DE4336464B4 (en) * 1993-10-26 2005-11-17 Robert Bosch Gmbh Hydraulic brake system
DE19642792A1 (en) * 1996-10-17 1998-04-23 Bosch Gmbh Robert Hydraulic vehicle brake fluid pressure damper
DE10305310B4 (en) 2003-02-10 2005-11-24 Robert Bosch Gmbh Device for damping pressure pulsations

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