DE102014224828A1 - Pressure change damper for a brake force-controlled hydraulic vehicle brake system and brake force-controlled hydraulic vehicle brake system with such a pressure change damper - Google Patents
Pressure change damper for a brake force-controlled hydraulic vehicle brake system and brake force-controlled hydraulic vehicle brake system with such a pressure change damper Download PDFInfo
- Publication number
- DE102014224828A1 DE102014224828A1 DE102014224828.0A DE102014224828A DE102014224828A1 DE 102014224828 A1 DE102014224828 A1 DE 102014224828A1 DE 102014224828 A DE102014224828 A DE 102014224828A DE 102014224828 A1 DE102014224828 A1 DE 102014224828A1
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- Prior art keywords
- damper
- pressure change
- brake system
- vehicle brake
- housing
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Classifications
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- 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
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- 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
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
- B60T13/146—Part of the system directly actuated by booster pressure
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- 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
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- 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- 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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/36—Other control devices or valves characterised by definite functions
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- 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
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
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- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
Abstract
Die Erfindung betrifft einen Druckänderungsdämpfer (11) für eine bremskraftgeregelte hydraulische Fahrzeugbremsanlage mit einem domförmigen Dämpfergehäuse (14), in dem ein schlauchförmiges Dämpferelement (15) aus einem Elastomer angeordnet ist. Die Erfindung schlägt vor, ein offenes Ende des Dämpferelements (15) mit einer ringförmigen Fassung (21) an einem offenen Ende des Dämpfergehäuses (14) zu befestigen und die Fassung (21) umlaufend fluiddicht und druckfest mit dem Dämpfergehäuse (14) zu verschweißen, insbesondere durch Laserschweißen.The invention relates to a pressure change damper (11) for a brake power-controlled hydraulic vehicle brake system having a dome-shaped damper housing (14) in which a tubular damper element (15) made of an elastomer is arranged. The invention proposes to fasten an open end of the damper element (15) with an annular socket (21) to an open end of the damper housing (14) and to weld the socket (21) peripherally in a fluid-tight and pressure-tight manner to the damper housing (14), in particular by laser welding.
Description
Die Erfindung betrifft einen Druckänderungsdämpfer für eine bremskraftgeregelte hydraulische Fahrzeugbremsanlage mit den Merkmalen des Oberbegriffs des Anspruchs 1 sowie eine bremskraftgeregelte, hydraulische Fahrzeugbremsanlage mit einem solchen Druckänderungsdämpfer gemäß Anspruch 9. The invention relates to a pressure change damper for a brake power-controlled hydraulic vehicle brake system having the features of the preamble of claim 1 and to a brake-force-controlled, hydraulic vehicle brake system having such a pressure change damper according to
Bremskraftgeregelt bedeutet, dass Radbremsdrücke in Radbremsen und damit Bremskräfte der Radbremsen einer hydraulischen Fahrzeugbremsanlage vorzugsweise radindividuell regelbar sind beispielsweise zu einer Bremsblockierschutz-, Antriebsschlupf-, oder Fahrdynamikregelung, die umgangssprachlich auch als Schleuderschutzregelung bezeichnet wird, einer automatischen Bremsung oder automatischen Abstandsregelung, für die Abkürzungen wie ABS, ASR, FDR, ESP, ACC gebräuchlich sind. Die Aufzählung ist beispielhaft und nicht abschließend. Solche Bremskraftregelungen sind grundsätzlich bekannt und es soll hier näher auf sie eingegangen werde. Die Bremskraftregelungen erfolgen teilweise bei betätigtem Hauptbremszylinder, in diesem Fall herrscht bereits zu Beginn der Bremskraftregelung ein Bremsdruck in der Fahrzeugbremsanlage, und teilweise bei nicht betätigtem Hauptbremszylinder, in diesem Fall ist die Fahrzeugbremsanlage zu Beginn der Bremskraftregelung drucklos. Brake force control means that wheel brake pressures in wheel brakes and thus braking forces of the wheel brakes of a hydraulic vehicle brake system are preferably wheel-individually controllable, for example, a Bremsblockierschutz-, Antriebsschlupf-, or vehicle dynamics control, which colloquially is also referred to as anti-skid control, automatic braking or automatic distance control, for the abbreviations ABS, ASR, FDR, ESP, ACC are common. The list is exemplary and not exhaustive. Such braking force controls are basically known and it will be discussed here in more detail. The braking force controls take place partially when the master cylinder is actuated, in this case already prevails at the beginning of the braking force control a brake pressure in the vehicle brake system, and partially not actuated master cylinder, in this case, the vehicle brake system is depressurized at the beginning of the braking force control.
Bremskraftgeregelte hydraulische Fahrzeugbremsanlagen weisen normalerweise eine Hydropumpe, meistens in jedem Bremskreis eine Hydropumpe auf, die auch als Rückförderpumpe bezeichnet wird und die oftmals eine Kolbenpumpe ist. Kolbenpumpen verursachen aufgrund ihrer oszillierenden Förderweisen Druckschwingungen in einer Bremsflüssigkeit einer hydraulischen Fahrzeugbremsanlage. Magnetventile zu einer Radbremsdruckregelung verursachen beim Schalten Druckstöße in der Bremsflüssigkeit. Zur Dämpfung solcher Druckänderungen in der Bremsflüssigkeit einer hydraulischen Fahrzeugbremsanlage sind Druckänderungsdämpfer bekannt, die eine Geräuscherzeugung ebenso verringern sollen wie eine Rückwirkung auf einen Hauptbremszylinder. Brake force-controlled hydraulic vehicle brake systems normally have a hydraulic pump, usually in each brake circuit to a hydraulic pump, which is also referred to as a return pump and which is often a piston pump. Piston pumps cause pressure oscillations in a brake fluid of a hydraulic vehicle brake system due to their oscillating modes of delivery. Solenoid valves for a wheel brake pressure control cause pressure surges in the brake fluid during shifting. To dampen such pressure changes in the brake fluid of a hydraulic vehicle brake system pressure change damper are known to reduce noise generation as well as a reaction to a master cylinder.
Stand der TechnikState of the art
Die internationale Patentanmeldung
Offenbarung der ErfindungDisclosure of the invention
Der erfindungsgemäße Druckänderungsdämpfer mit den Merkmalen des Anspruchs 1 ist für eine bremskraftgeregelte hydraulische Fahrzeugbremsanlage vorgesehen. Er weist ein rohrförmiges Dämpfergehäuse auf, in dem ein elastisch verformbares, schlauchförmiges Dämpferelement angeordnet ist. Rohrförmig bedeutet nicht zwingend zylindrisch sondern kann beispielsweise auch mehrkantig und/oder sich verjüngend und/oder aufweitend sein. Insbesondere ist das Dämpfergehäuse domförmig, womit eine einseitig geschlossene Rohrform gemeint ist, wobei ein geschlossenes Ende beispielsweise eben oder kuppelförmig sein kann. Das schlauchförmige Dämpferelement ist ebenfalls vorzugsweise an einem Ende geschlossen und besteht insbesondere aus einem Elastomer wie EPDM. Es verbraucht bei seiner elastischen Verformung Energie wodurch es Druckänderungen eines Fluids, beispielsweise Bremsflüssigkeit, dämpft. Das Dämpferelement wird innen mit einem Fluid beaufschlagt, dessen Druckänderungen gedämpft werden sollen. Ein offenes Ende des Dämpferelements ist an oder in einem offenen Ende des Dämpfergehäuses angeordnet und mittels einer ringförmigen Fassung befestigt, die das offene Ende des Dämpferelements fluiddicht und vorzugsweise auch druckfest mit dem offenen Ende des Dämpfergehäuses verbindetThe pressure change damper according to the invention with the features of claim 1 is provided for a brake power-controlled hydraulic vehicle brake system. It has a tubular damper housing, in which an elastically deformable, tubular damper element is arranged. Tubular means not necessarily cylindrical but may for example be polygonal and / or tapered and / or widening. In particular, the damper housing is dome-shaped, by which is meant a pipe mold closed on one side, wherein a closed end can be, for example, flat or dome-shaped. The tubular damper element is also preferably closed at one end and consists in particular of an elastomer such as EPDM. It consumes energy in its elastic deformation whereby it dampens pressure changes of a fluid such as brake fluid. The damper element is charged internally with a fluid whose pressure changes are to be damped. An open one The end of the damper element is disposed on or in an open end of the damper housing and secured by an annular socket which connects the open end of the damper element fluid-tight and preferably also pressure-resistant with the open end of the damper housing
Die Erfindung hat den Vorteil einer einfachen und preisgünstigen Herstellbarkeit. The invention has the advantage of simple and inexpensive manufacturability.
Die Unteransprüche haben vorteilhafte Ausgestaltungen und Weiterbildungen der im Anspruch 1 angegebenen Erfindung zum Gegenstand. Vorzugsweise sind die Fassung und das Dämpfergehäuse umlaufend fluiddicht miteinander verschweißt (Anspruch 3), insbesondere laserverschweißt, wobei auch andere stoffschlüssige und umlaufend ausgeführte Verbindungen wie beispielsweise Kleben zum fluiddichten und vorzugsweise auch druckfesten Verbinden der Fassung mit dem Dämpfergehäuse möglich sind (Anspruch 2). Das Dämpfergehäuse ist insbesondere als Tiefziehteil aus Metall hergestellt (Anspruch 5). The dependent claims have advantageous refinements and developments of the invention specified in claim 1 to the subject. Preferably, the socket and the damper housing circumferentially fluid-tight welded together (claim 3), in particular laser welded, with other cohesive and circumferentially executed compounds such as bonding for fluid-tight and preferably also pressure-resistant connection of the socket with the damper housing are possible (claim 2). The damper housing is made in particular as a deep-drawn part made of metal (claim 5).
Des Weiteren betrifft die Erfindung eine bremskraftgeregelte hydraulische Fahrzeugbremsanlage mit einem Druckänderungsdämpfer der erläuterten Art gemäß Anspruch 9, wobei der Druckänderungsdämpfer insbesondere an einen Pumpenauslass, d. h. eine Druckseite einer Hydropumpe einer Bremskraftregelung der hydraulischen Fahrzeugbremsanlage angeschlossen ist. Solche Hydropumpen sind wie eingangs beschrieben oftmals Kolbenpumpen, die aufgrund einer oszillierenden Förderweise Druckschwingungen erzeugen, die der erfindungsgemäße Druckänderungsdämpfer dämpft. Furthermore, the invention relates to a brake force-controlled hydraulic vehicle brake system with a pressure change damper of the type described according to
Kurze Beschreibung der ZeichnungShort description of the drawing
Die Erfindung wird nachfolgend anhand einer in der Zeichnung dargestellten Ausführungsform näher erläutert. Es zeigen: The invention will be explained in more detail with reference to an embodiment shown in the drawing. Show it:
Ausführungsform der ErfindungEmbodiment of the invention
Die in
Einen erfindungsgemäßen Druckänderungsdämpfer
Das Dämpferelement
Mittels einer ringförmigen Fassung
Zur Verbindung mit dem Dämpfergehäuse
Auf einer dem Dämpfergehäuse
Die Fassung
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- WO 2011/028376 A2 [0004] WO 2011/028376 A2 [0004]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102014224828.0A DE102014224828A1 (en) | 2014-12-04 | 2014-12-04 | Pressure change damper for a brake force-controlled hydraulic vehicle brake system and brake force-controlled hydraulic vehicle brake system with such a pressure change damper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102014224828.0A DE102014224828A1 (en) | 2014-12-04 | 2014-12-04 | Pressure change damper for a brake force-controlled hydraulic vehicle brake system and brake force-controlled hydraulic vehicle brake system with such a pressure change damper |
Publications (1)
Publication Number | Publication Date |
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DE102014224828A1 true DE102014224828A1 (en) | 2016-06-09 |
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DE102014224828.0A Pending DE102014224828A1 (en) | 2014-12-04 | 2014-12-04 | Pressure change damper for a brake force-controlled hydraulic vehicle brake system and brake force-controlled hydraulic vehicle brake system with such a pressure change damper |
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DE (1) | DE102014224828A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020022331A1 (en) * | 2018-07-23 | 2020-01-30 | 株式会社アドヴィックス | Hydraulic damper |
JP2020050264A (en) * | 2018-09-28 | 2020-04-02 | 株式会社アドヴィックス | Liquid pressure damper |
WO2021198344A1 (en) * | 2020-04-03 | 2021-10-07 | Volkswagen Aktiengesellschaft | Hydraulic arrangement in a brake system of a motor vehicle, and motor vehicle |
WO2022008111A1 (en) * | 2020-07-07 | 2022-01-13 | Robert Bosch Gmbh | Vehicle brake system pressure damper |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011028376A2 (en) | 2009-08-24 | 2011-03-10 | Kelsey-Hayes Company | Attenuator for a vehicle braking system |
-
2014
- 2014-12-04 DE DE102014224828.0A patent/DE102014224828A1/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011028376A2 (en) | 2009-08-24 | 2011-03-10 | Kelsey-Hayes Company | Attenuator for a vehicle braking system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020022331A1 (en) * | 2018-07-23 | 2020-01-30 | 株式会社アドヴィックス | Hydraulic damper |
JP2020050264A (en) * | 2018-09-28 | 2020-04-02 | 株式会社アドヴィックス | Liquid pressure damper |
JP7259245B2 (en) | 2018-09-28 | 2023-04-18 | 株式会社アドヴィックス | hydraulic damper |
WO2021198344A1 (en) * | 2020-04-03 | 2021-10-07 | Volkswagen Aktiengesellschaft | Hydraulic arrangement in a brake system of a motor vehicle, and motor vehicle |
WO2022008111A1 (en) * | 2020-07-07 | 2022-01-13 | Robert Bosch Gmbh | Vehicle brake system pressure damper |
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