WO2012000479A1 - Hydraulisches element - Google Patents
Hydraulisches element Download PDFInfo
- Publication number
- WO2012000479A1 WO2012000479A1 PCT/DE2011/001268 DE2011001268W WO2012000479A1 WO 2012000479 A1 WO2012000479 A1 WO 2012000479A1 DE 2011001268 W DE2011001268 W DE 2011001268W WO 2012000479 A1 WO2012000479 A1 WO 2012000479A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic
- valve body
- slave cylinder
- sealing element
- pressure
- 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.)
- Ceased
Links
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0215—Control by fluid pressure for damping of pulsations within the fluid system
Definitions
- the present invention relates to a hydraulic element, in particular for arrangement in a pressure line between a master cylinder and a slave cylinder of a hydraulic clutch actuation with the features of the preamble of claim 1.
- WO 2009/036729 A1 discloses a hydraulic element, in particular for arrangement in a pressure line between a master cylinder and a slave cylinder of a hydraulic clutch actuator, with a housing which has a master cylinder-side hydraulic connection and a slave cylinder-side hydraulic connection and which receives a valve arrangement with a valve body , known.
- This hydraulic element is in particular a Kribbelfliter or a Ventilkribbelfilter and serves to pressure oscillations, which are transmitted from an internal combustion engine, in particular from the crankshaft, via components of the vehicle clutch to the slave cylinder and lead to vibrations in the hydraulic system to damp.
- the hydraulic element on two valve body in particular a valve cup and a tubular region encompassing this, which are mounted in a floating manner in the housing and can be moved relative to each other against the force of a spring.
- the gap There is a functional gap between the valve cup and the tubular area. So that the pressure oscillations can not migrate over this gap to the master cylinder, the gap must be sufficiently small. Therefore, the manufacturing tolerances in this area must be made very small.
- the object is achieved according to the invention with a hydraulic element having the features of claim 1.
- Preferred embodiments of the invention are specified in the subclaims.
- the hydraulic element according to the invention in particular for arrangement in a pressure line between a master cylinder and a slave cylinder of a hydraulic clutch actuation comprises a housing having a master cylinder side hydraulic port and a slave cylinder side hydraulic port and which receives a valve assembly with a valve body, wherein the valve body has a bendable sealing element , By the bending of which an opening arranged in the valve body for the passage of hydraulic fluid is pressure-dependent Apparent or closable.
- the hydraulic element is in particular a Kribbelfilter, which is arranged in a hydraulic clutch system. Due to the fact that the valve body has a bendable sealing element, through the bend of which an opening arranged in the valve body can be opened or closed in a pressure-dependent manner, the hydraulic element can unfold its effect with a particularly simple construction. Depending on the arrangement, the sealing element can release the opening in the valve body, for example by means of a master cylinder-side overpressure, but close it again in the event of a slave-cylinder-side overpressure. An elaborate and highly accurate construction of valve body and / or sealing element can be avoided, the hydraulic element can be made very compact and inexpensive.
- the sealing element can develop the action of a check valve.
- the sealing element takes over the action of a check valve from the slave cylinder side of the housing towards the encoder cylinder side of the housing.
- An overpressure causes here that the sealing element securely closes the opening.
- a fluid can flow through the opening in a reverse direction, ie from the encoder cylinder side side to the slave cylinder side of the housing by the sealing element is bent by a pressure exerted by the fluid pressure to the slave cylinder side side and thus releases the opening.
- the sealing element is sufficiently flexible to be bent by the opening in order to release it, for example, in the case of a master cylinder-side overpressure and to allow the fluid to flow through.
- the sealing element should have sufficient stability in order not to be bent into the opening at a slave-cylinder-side overpressure, but to close the opening.
- the hydraulic element is so inexpensive, robust and can be produced in compact dimensions.
- the hydraulic element for example, when engaging at higher flow rates significantly lower pressure drops than comparable known from the prior art hydraulic elements.
- the sealing element, the opening is arranged on the slave cylinder side covering.
- Sealing element formed as a valve body at least partially encompassing hose, wherein the hose is made in particular of an elastic material.
- the sealing element such as the hose
- the sealing element on the valve body is positively fixed, in particular by the overlapping of a bead of the valve body, fixed. As a result, a particularly secure hold of the sealing element on the valve body is possible.
- a channel is provided in the valve body, which connects the slave cylinder side of the opening with its encoder cylinder side side. It is particularly advantageous if the channel is pressure-dependently closed by the sealing element. In this way, the flexible sealing element can seal all areas relevant to the function of the hydraulic element. Furthermore, it is possible that the sealing element opens in its function as a check valve, for example via a spring channel, so that the pressure drop after opening the valve with increasing flow rate remains almost constant.
- the channel has a width varying in the axial direction. In particular, the width of the channel at low Abhub the valve body is small and increases only continuously towards larger Abh Claus. This ensures that the stability of the opening process is increased by the valve body.
- the valve body adjacent to the opening has a groove for forming a leakage between the master cylinder side and slave cylinder side.
- the groove thus ensures a desired small leakage between the side of the donor and the slave cylinder.
- the groove has only a small cross-section.
- the invention further relates to a hydraulic power transmission system, in particular a hydraulic clutch actuator for a motor vehicle, comprising a master cylinder which is hydraulically connected via a hydraulic pressure line to a slave cylinder 4, wherein in the pressure line, an inventive hydraulic element is arranged.
- Fig. 1 is a schematic representation of a hydraulic system for actuating a
- Fig. 2 shows an embodiment of a hydraulic element according to the prior
- Fig. 3 shows an embodiment of the hydraulic element of Fig. 1 in longitudinal section.
- Fig. 1 shows as an example of a hydraulic power transmission system, a hydraulic clutch actuator 1 for a motor vehicle.
- the hydraulic clutch actuation 1 um- summarizes in a conventional manner a master cylinder 2, which is hydraulically connected via a hydraulic pressure line 3 with a slave cylinder 4.
- the slave cylinder 4 may for example be designed as lever cylinder-shaped slave cylinder, as so-called Gottitzer, wherein in an annular cylinder housing an annular slave cylinder piston 5 is mounted.
- the annular cylinder housing 4 and the annular Nehmerzy- linderkolben 5 include a turn annular pressure chamber 16 a.
- a plate spring 7 is actuated via a release bearing 6 in a conventional manner.
- the plate spring 7 is used to actuate a vehicle clutch 17. This includes a pressure plate 8, a counter-pressure plate 9 and a clutch disc 10.
- the plate spring 7 is biased so that it presses a pressure plate 8 in the biasing direction 8 on a counter-pressure plate 9 while a clutch disc 0, the rotatably connected to a transmission input shaft is clamped between pressure plate 8 and counter pressure plate 9.
- the pressure plate 8 and the counter-pressure plate 9 are rotatably connected to a crankshaft of an internal combustion engine, not shown here.
- the master cylinder 2 comprises a master cylinder piston 11, which is actuated by means of a clutch pedal 12 via a push rod 13.
- a housing of the master cylinder 2 and the transmitter cylinder pistons 11 arranged movably therein enclose a pressure chamber 15.
- a follow-up container 14 is in a pressureless system, while the master cylinder piston 1 is its most pulled out of the master cylinder 2 position, hydraulically connected to the pressure chamber 15.
- a hydraulic element 18 is arranged in the pressure line 3.
- the hydraulic element 18 is preferably a damping filter or a so-called Kribbelfilter, so a differential pressure valve, with which in particular low-frequency vibrations attenuate without additional travel losses, whereby unpleasant pedal vibrations are prevented.
- the hydraulic clutch actuation according to FIG. 1 is known per se. Instead of one
- the hydraulic element according to the invention can be used in a clutch arrangement for a dual-clutch transmission.
- the hydraulic element according to the invention can be used in any hydraulic system, such as in a brake system.
- FIG. 2 shows an exemplary hydraulic element 18 according to the prior art, which is preferably arranged in a hydraulic clutch actuator 1 according to FIG.
- a hydraulic element 18 acting as Kribbelfilter comprises a substantially rotationally symmetrical housing 19 which on one side a hydraulic connector 20 for connection of the hydraulic element 18 with a hydraulic sleeve 23 of the pressure line 3 according to FIG.
- the plug 20 forms a slave cylinder side hydraulic connection.
- a socket assembly 21 is received as a coupling assembly with a socket 22 for a plug-in connection in the housing 19.
- the sleeve 22 forms a master cylinder side hydraulic connection.
- a valve assembly 23 is arranged in the housing 19, a valve assembly 23 is arranged.
- the valve assembly 23 includes a valve cup 24 in which a tubular portion 25 is disposed.
- the valve cup 24 as well as the tubular portion 25 is cantilevered in the housing 19 and against the force of a spring 26 relative to each other displaceable.
- An improved compared to the prior art Kribbelfilter 18, which is inexpensive and compact in construction and has an improved functionality, is shown in Figure 3, wherein corresponding components are provided with the same reference numerals.
- Essentially rotationally symmetrical housing 19 which on one side a hydraulic connector 20 for connecting the hydraulic Elennents 18 with a hydraulic sleeve 22 of the pressure line 3 according to FIG. 1 comprises.
- the plug 20 forms a slave cylinder side hydraulic connection.
- a socket assembly 21 is received as a coupling assembly with a socket 22 for a plug-in connection in the housing 19.
- the sleeve 22 forms a master cylinder side hydraulic connection.
- the plug 20 may include, for example, an O-ring 27, which is arranged in a groove 28 surrounding the plug 20.
- plug 20 and socket 22 may also be interchanged with each other or both terminals may be formed as a plug 20 or socket 22, respectively.
- the plug 20 and the socket 22 of the socket assembly 21 may belong to a similar hydraulic connector.
- the plug 20 of a hydraulic element 8 could be connected to the bush 22 of another hydraulic element 18. But it can also be provided different types of hydraulic connectors.
- valve assembly 29 In the housing 19, a valve assembly 29 is arranged.
- the valve arrangement 29 comprises an axially displaceable in the housing 19 valve body 30.
- the valve body 30 is arranged secured against rotation to the housing 19.
- On the master cylinder side of the valve body 30 is biased by a spring 26, wherein the spring 26 is supported on a preferably pressed in the housing 19 Einpresskonus 31.
- the valve body 30 At its slave cylinder end, the valve body 30 comprises a bendable sealing element 32nd
- the sealing element 32 is arranged in such a way that, as a result of the bending of the latter, an opening 33 arranged in the valve body 30 is obviously or can be closed in a pressure-dependent manner. This can be realized in various ways. Particularly advantageous covers the sealing element 32 arranged in the valve body 30 opening 33 slave cylinder side. The important tet that an opening 33 disposed in the valve body 30, which releases an internal fluidic connection between the plug 20 and the socket assembly 21, is covered by the flexible sealing element 32 and thus closed.
- the flexible sealing element 32 is bendable such that it is at a encoder cylinder side overpressure, when a certain pressure threshold on the side of the master cylinder 2 is overcome, bends in the slave cylinder side direction or is pressed by the opening 33 and so the opening 33 releases. Now, fluid can flow from the master cylinder 2 to the slave cylinder 4.
- the sealing element 32 is pressed against the valve body 30 and thus seals the opening 33.
- the sealing element 32 has the function of a check valve.
- the bendable, or flexible sealing element 32 for example, as an elastic hose, be formed, which surrounds the valve body 30 at least partially, in particular on the slave cylinder end, or pushed onto this and fixed here.
- a fixing can be realized in various ways. Particularly advantageous here can be a cohesive fixing, such as by gluing or welding, or a positive fixing, such as by the provision of a arranged on the valve body 30 bead 38, which surrounds the sealing element 32, or a combination thereof can be realized.
- At least one channel 35 is provided in the valve body 30, which connects the slave cylinder side side of the opening 33 with its encoder cylinder side side.
- the channel 35 may equally be sealed by the flexible sealing element 32.
- the valve body 30 in the housing 19 is axially displaceable and in particular biased by the spring 26.
- the sealing element 32 is thus pressed by the spring 26 via the lying in the housing 19 valve body 30 to a sealing seat 34 of the housing 19. In this case, the sealing element 32 rests on its outer edge, so that the effective area in the closed and open state is almost the same. Unstable conditions due to surface jumps are thus prevented.
- valve body 30 lifts with sealing element 32 from the sealing seat 34 and fluid can through the housing 19 located in the channel 35 and the valve body 30 located opening 33 to the master cylinder 2 flow.
- the sealing member 32 is formed of an elastic material such as a hose
- the valve body 30 beats damped on the sealing seat 34.
- the Kribbelfilter 18 works very gently.
- the noise is significantly reduced.
- the width of the channel 35 in the circumferential direction may have a varying width. In the region of the sealing seat 34, only a small cross section is released. The more the valve body 30 is pressed on, the wider the channel 35. In particular in combination with a small spring rate of the spring 26, it can be achieved in this way that the pressure drop remains constant as a function of the volume flow.
- a groove 37 in particular with a small cross-section, for a small leakage between the side of the master cylinder 2 and the slave cylinder. 4 provides.
- a groove 37 is also advantageous because during the initial filling on the assembly line by means of vacuum, the air must be sucked over the Kribbelfilter 18 from the slave side to the donor side. With a vacuum pressure filling, the slave cylinder 4 can thus be evacuated via this groove 37.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112011102182.8T DE112011102182B4 (de) | 2010-06-29 | 2011-06-16 | Hydraulisches Element |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010025442 | 2010-06-29 | ||
| DE102010025442.8 | 2010-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012000479A1 true WO2012000479A1 (de) | 2012-01-05 |
Family
ID=44558440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2011/001268 Ceased WO2012000479A1 (de) | 2010-06-29 | 2011-06-16 | Hydraulisches element |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE112011102182B4 (de) |
| WO (1) | WO2012000479A1 (de) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015021973A1 (de) * | 2013-08-16 | 2015-02-19 | Schaeffler Technologies Gmbh & Co. Kg | Ventilanordnung für ein kupplungssystem |
| WO2015131894A1 (de) * | 2014-03-06 | 2015-09-11 | Schaeffler Technologies AG & Co. KG | Kribbeleinheit für ein kribbelfilter |
| FR3027359A1 (fr) * | 2014-10-17 | 2016-04-22 | Peugeot Citroen Automobiles Sa | Commande hydraulique d'un embrayage a module d'attenuation de vibrations a une pedale de debrayage et de reduction de debit du fluide hydraulique limitant la vitesse de remontee de la pedale |
| DE102015206292A1 (de) | 2015-04-09 | 2016-10-13 | Schaeffler Technologies AG & Co. KG | Differenzdruckventil zum Dämpfen von niederfrequenten Schwingungen in der Hydraulikleitung eines Kupplungsbetätigungssystems |
| WO2017050329A1 (de) * | 2015-09-25 | 2017-03-30 | Schaeffler Technologies AG & Co. KG | Kupplungsgeber mit hochdruckraum im kolben, (doppel-)kupplung mit kupplungsgeber und antriebstrang |
| DE102016211545A1 (de) * | 2016-06-28 | 2017-12-28 | Schaeffler Technologies AG & Co. KG | Dämpfungsvorrichtung mit Schwingungsdämpfeinheit und geclipstem Einsatzelement |
| DE102017122527A1 (de) | 2017-09-28 | 2019-03-28 | Schaeffler Technologies AG & Co. KG | Kribbelfilter |
| US10292421B2 (en) | 2013-12-20 | 2019-05-21 | Philip Morris Products S.A. | Smoking article filter including degradable filter component |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015207793B4 (de) * | 2015-04-28 | 2019-08-01 | Schaeffler Technologies AG & Co. KG | Drosseleinheit zum Drosseln von Fluid in einer hydraulischen Strecke einer hydraulisch betätigbaren Kupplung |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10106958A1 (de) * | 2000-02-29 | 2001-08-30 | Luk Lamellen & Kupplungsbau | Hydraulisches System |
| WO2003095846A1 (de) * | 2002-05-14 | 2003-11-20 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulisches system |
| WO2009036729A1 (de) | 2007-09-20 | 2009-03-26 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulisches element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005048593B4 (de) * | 2005-10-11 | 2012-04-05 | Woco Industrietechnik Gmbh | Kunststoffleitung, insbesondere hydraulische Kupplungsdruck-Übertragungsleitung für ein Kraftfahrzeug |
-
2011
- 2011-06-16 DE DE112011102182.8T patent/DE112011102182B4/de active Active
- 2011-06-16 DE DE102011104409A patent/DE102011104409A1/de not_active Withdrawn
- 2011-06-16 WO PCT/DE2011/001268 patent/WO2012000479A1/de not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10106958A1 (de) * | 2000-02-29 | 2001-08-30 | Luk Lamellen & Kupplungsbau | Hydraulisches System |
| WO2003095846A1 (de) * | 2002-05-14 | 2003-11-20 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulisches system |
| WO2009036729A1 (de) | 2007-09-20 | 2009-03-26 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulisches element |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105452698B (zh) * | 2013-08-16 | 2017-11-24 | 舍弗勒技术股份两合公司 | 用于离合器系统的阀组件 |
| CN105452698A (zh) * | 2013-08-16 | 2016-03-30 | 舍弗勒技术股份两合公司 | 用于离合器系统的阀组件 |
| WO2015021973A1 (de) * | 2013-08-16 | 2015-02-19 | Schaeffler Technologies Gmbh & Co. Kg | Ventilanordnung für ein kupplungssystem |
| US10292421B2 (en) | 2013-12-20 | 2019-05-21 | Philip Morris Products S.A. | Smoking article filter including degradable filter component |
| WO2015131894A1 (de) * | 2014-03-06 | 2015-09-11 | Schaeffler Technologies AG & Co. KG | Kribbeleinheit für ein kribbelfilter |
| FR3027359A1 (fr) * | 2014-10-17 | 2016-04-22 | Peugeot Citroen Automobiles Sa | Commande hydraulique d'un embrayage a module d'attenuation de vibrations a une pedale de debrayage et de reduction de debit du fluide hydraulique limitant la vitesse de remontee de la pedale |
| DE102015206292A1 (de) | 2015-04-09 | 2016-10-13 | Schaeffler Technologies AG & Co. KG | Differenzdruckventil zum Dämpfen von niederfrequenten Schwingungen in der Hydraulikleitung eines Kupplungsbetätigungssystems |
| WO2017050329A1 (de) * | 2015-09-25 | 2017-03-30 | Schaeffler Technologies AG & Co. KG | Kupplungsgeber mit hochdruckraum im kolben, (doppel-)kupplung mit kupplungsgeber und antriebstrang |
| CN108026984A (zh) * | 2015-09-25 | 2018-05-11 | 舍弗勒技术股份两合公司 | 具有在活塞中的高压室的离合器主动装置、具有离合器主动装置的(双)离合器和驱动系 |
| CN108026984B (zh) * | 2015-09-25 | 2020-06-16 | 舍弗勒技术股份两合公司 | 具有在活塞中的高压室的离合器主动装置、具有离合器主动装置的(双)离合器和驱动系 |
| DE102016211545A1 (de) * | 2016-06-28 | 2017-12-28 | Schaeffler Technologies AG & Co. KG | Dämpfungsvorrichtung mit Schwingungsdämpfeinheit und geclipstem Einsatzelement |
| DE102016211545B4 (de) | 2016-06-28 | 2021-08-12 | Schaeffler Technologies AG & Co. KG | Dämpfungsvorrichtung mit Schwingungsdämpfeinheit und geclipstem Einsatzelement |
| DE102017122527A1 (de) | 2017-09-28 | 2019-03-28 | Schaeffler Technologies AG & Co. KG | Kribbelfilter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011104409A1 (de) | 2012-01-19 |
| DE112011102182B4 (de) | 2020-09-03 |
| DE112011102182A5 (de) | 2013-04-04 |
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