WO2012000477A1 - Geberzylinder - Google Patents
Geberzylinder Download PDFInfo
- Publication number
- WO2012000477A1 WO2012000477A1 PCT/DE2011/001266 DE2011001266W WO2012000477A1 WO 2012000477 A1 WO2012000477 A1 WO 2012000477A1 DE 2011001266 W DE2011001266 W DE 2011001266W WO 2012000477 A1 WO2012000477 A1 WO 2012000477A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder
- master cylinder
- housing
- air
- pressure medium
- 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
- 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
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/06—Details
- F15B7/08—Input units; Master units
-
- 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
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. 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
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/28—Valves specially adapted therefor
- B60T11/30—Bleed valves for hydraulic brake systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
- B60T17/222—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems by filling or bleeding of hydraulic systems
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
-
- 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
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D2025/081—Hydraulic devices that initiate movement of pistons in secondary cylinders for actuating clutches, i.e. primary cylinders
-
- 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
- F16D2048/0224—Details of conduits, connectors or the adaptors therefor specially adapted for clutch control
Definitions
- the invention relates to a master cylinder for a hydraulic system, in particular for motor vehicles, with a cylinder housing, a pressure medium can be filled pressure chamber which is bounded on one side by a cylinder housing axially displaceable piston and on the other side of a housing bottom of the cylinder housing , Wherein the housing bottom side, a radially outwardly directed A n gleichteil for receiving a connection with a slave cylinder producing pressure medium line is provided, and a primary side of the master cylinder via a compensation opening / sniffer bore to compensate for pressure medium and / or air with a secondary side of the master cylinder is connectable.
- master cylinder hydraulic release systems are provided with a slightly inclined mounting position. That is, the secondary side in the cylinder housing of the Geberz ylinders existing compensation or Schnüffelbohronne are spatially seen above the primary side arranged in the cylinder housing and by means of a pressure line with a slave cylinder in communication pressure chamber.
- This mounting position used in, for example, the Geberz operating according to the plunger principle is due to the E property of the air to rise upwards.
- the air present inside the distributor cylinder passes through the sniffer grooves connecting the primary side with the secondary side to the higher-lying scupper bores and flows through the latter into the secondary space.
- a master cylinder in an obliquely upward installation position that is, in an orientation in which the equalizing or sniffer bores are located below the primary-side pressure space, has insufficient self-venting functionality due to the above-described property of the air.
- venting tests on transparent master cylinders which were mounted at an angle of 27.3 °, showed that almost ten times as many actuations of the disengagement system were needed to achieve the desired disengagement distance compared to a 10 ° downwards installation to reach.
- a large part (86%) of the introduced air is pressed into the liquid and it only seems to be a stiff system. After a rest period, a large part of this air will outgas again and thus again reduce the Ausschweg.
- the object of the invention is to provide a master cylinder, the märseite also has a sufficient self-venting functionality in a mounting position with respect to the secondary side higher Pri.
- a pressure medium can be filled pressure chamber, which is limited on one side by a cylinder in the cylinder ve rschiebbar axially displaceable Kol and limited on the other side by a housing bottom of the cylinder housing ,
- two feeds are provided in the cylinder housing depending on the coupling state, one communicating with the pressure chamber and the other with a cavity located in the piston.
- the cavity is bounded by a closure element fixed to the piston.
- the feeds are provided in the pressure medium connection to the slave cylinder producing connecting part, each feed opens into a se paraten area of serving as an air storage space.
- a nose arranged on the closure element engages in a rotationally fixing manner in a notch located on the piston in such a way that a gap forming the sniffer bore is present.
- an inside of the cylinder housing i n is provided approximately parallel to the housing bottom W, which has a passage opening for the from the connection part between the housing bottom and the W and flowing pressure medium.
- the passage opening is attached to the highest point of the pressure chamber in the wall.
- FIG. 1 shows a schematic sectional view of a master cylinder according to the invention according to a first embodiment
- FIG. 1a shows a detail according to FIG. 1 when disengaging
- FIG. 1b shows a detail according to FIG. 1 during engagement
- Figure 2 is a schematic representation of a master cylinder according to the prior
- Figure 3 is a schematic representation of a master cylinder according to the prior
- FIG. 3 a shows a detail according to FIG. 3
- FIG. 4 shows a schematic representation of a master cylinder according to the invention according to a second embodiment
- a master cylinder 1 m is used with a cylinder housing 2 in an upwardly inclined mounting position, that is, the primary side 1A is located higher than the secondary side 1B.
- a piston 3 m by means of a piston rod 4 axially displaceable, which limits on the primary side 1A of the master cylinder 1 with a pressure medium filled with a pressure chamber 5.
- seals 6 are provided, which seal the primary side 1A relative to the secondary side 1 B of the master cylinder 1.
- a radially outwardly directed connection part 2.2 At the axial height ei nes housing odens 2.1 of the cylinder housing 2 is a radially outwardly directed connection part 2.2.
- a compound m is made with a slave cylinder, not shown here.
- a space 9 is provided within the connection part 2.2 of the cylinder housing 2, which has two areas 9.1, 9.2.
- two junctions for two feeds 10, 1 1 are provided on the plug 8.
- the inlet 10 leads into the lower area h 9.1 and ends at the highest point of the pressure chamber 5.
- In the upper B ereich 9.2 m opens the inlet 1 1, which continues in a belonging to the cylinder housing 2 pipe 2. 3, which with a Cavity 3.1 of the piston 3 is connected.
- the cavity 3.1 is bounded on the pressure chamber side by a closure element 12, which is arranged at the end of the piston 3.
- the piston 3 has a notch 3.2, in which a nose 12.1 located on the closure element 12 engages egg and thus fixes the piston 3 to the closure element 12 in the rotational direction.
- the nose 12.1 does not reach all the way to the bottom of the notch 3.2.
- the resulting resulting gap forms a sniffer bore 3.3.
- At the lowest point of the closure element 12 is an opening 12.3.
- the direction of the air transport when engaging or when disengaging the clutch is shown by the arrows I, II.
- the arrow I indicates the direction of air transport when engaging and the arrow II the direction when disengaging.
- the air is transported with the pressure medium via the pipe 2.3 in the cavity 3.1 of the piston 3 when it is engaged, so sam mel the air in the region of the sniffer bore 3.3.
- the closure element 12 forms a barrier to the air. After passing over the primary seal 6, the air can pass through the sniffer bore 3.3 from the primary side 1A to the secondary side 1B.
- One possible embodiment variant envisages a blocking of the inlet 10 in the coupling-in direction so as to convey the complete air transported into the master cylinder 1 into the cavity 3.1 of the piston 3.
- FIG. 1a shows a detail according to FIG. 1, which shows in an enlarged view the direction of movement of the fluid and air flow during disengagement.
- a valve body 13 which has a pin 13.1.
- the pin 13.1 is guided in the Zyündergeophen 2 and secured against rotation in front of the inlet 10 is arranged.
- the master cylinder 1 thus has a device which transports the air from its highest point to the lower-lying sniffer bore 3.3.
- Di ese device consists of the two inlets 10, 11 and the two air chambers forming areas 9,1, 9.2 of the space 9 in cooperation with the closure element 12.
- the volume flows are reduced in the individual inlets and thereby minimizes the risk of turbulence, the speed of flow through the donor cylinder can occur at an angle at a higher flow.
- FIGS. 4 and 4a A further embodiment of a master cylinder 1 according to the invention is shown in FIGS. 4 and 4a.
- FIG. 2 shows a schematic representation of a master cylinder according to the prior art with a slightly inclined mounting position, ie. H. the primary side 1A is located slightly lower than the secondary side 1 B. An optimal self-ventilation is ensured at an angle of about + 5 °.
- a master cylinder 1 of the prior art is shown in an upwardly inclined mounting position, d. H. the primary side 1A is located higher than the secondary side 1B.
- an orientation with an angle of about -30 ° is assumed.
- a master cylinder 1 in an obliquely upwardly directed ge installation position, d. H. in an orientation in which the compensation or sniffer holes are located below the primary-side pressure chamber has an unfavorable self-venting.
- FIG. 3a shows an enlarged schematic representation of a detail of Figure 3, which illustrates the disadvantage of this standard design of the master cylinder 1: Due to the upward (primary side) inclined mounting position, an air volume 14 has formed within the cylinder housing 2 on the housing bottom 2.1, which can not be transported in the direction of the sniffer bore, not shown here, since the pressure medium 15 flowing through the connection part 2.2 does not or hardly detects the pent-up air.
- the master cylinder 1 according to the invention is in an upwardly inclined installation position which corresponds to the orientation of the master cylinder shown in FIG.
- the cylinder housing 2 has, on the connector part side, a wall 2.4 which extends at a distance from and extends approximately parallel to the housing bottom 2.1 of the cylinder housing 2 and has a passage opening 2.5 at its highest point.
- Figure 4a shows how the pressure medium 15 flow between housing bottom 2.1 and 2.4 along wall and can transport through the passage opening 2.5 with the air in the direction of the sniffer holes not shown.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112011104072T DE112011104072A5 (de) | 2010-06-29 | 2011-06-16 | Geberzylinder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010025583.1 | 2010-06-29 | ||
| DE102010025583 | 2010-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012000477A1 true WO2012000477A1 (de) | 2012-01-05 |
Family
ID=44629791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2011/001266 Ceased WO2012000477A1 (de) | 2010-06-29 | 2011-06-16 | Geberzylinder |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE112011104072A5 (de) |
| WO (1) | WO2012000477A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662171B (zh) * | 2014-08-11 | 2020-02-28 | 舍弗勒技术股份两合公司 | 双离合器操纵装置 |
| DE102015211372A1 (de) | 2015-06-19 | 2016-12-22 | Schaeffler Technologies AG & Co. KG | Adaptive Entlüftungsvorrichtung für ein hydraulisches System und ein hydraulisches System |
| DE102016219461B4 (de) * | 2016-10-07 | 2019-01-03 | Schaeffler Technologies AG & Co. KG | Hydrostatischer Aktor mit axial verlagerbarem Druckzylinder und Kraftfahrzeugbaugruppe mit einem solchen hydrostatischen Aktor |
| DE102017217845A1 (de) | 2017-10-06 | 2019-04-11 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Schwingungsentkopplungssystem |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1868540U (de) * | 1961-10-17 | 1963-03-07 | Automotive Prod Co Ltd | Stroemungsmittel-hauptzylinder, insbesondere fuer hydraulische druckbremsanlagen. |
| DE19820578A1 (de) * | 1998-05-08 | 1999-11-11 | Mannesmann Sachs Ag | Hydraulische Betätigungseinrichtung |
| EP1602543A1 (de) * | 2004-06-04 | 2005-12-07 | ZF Friedrichshafen AG | Hydraulikzylinder |
-
2011
- 2011-06-16 WO PCT/DE2011/001266 patent/WO2012000477A1/de not_active Ceased
- 2011-06-16 DE DE112011104072T patent/DE112011104072A5/de not_active Withdrawn
- 2011-06-16 DE DE102011104370A patent/DE102011104370A1/de not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1868540U (de) * | 1961-10-17 | 1963-03-07 | Automotive Prod Co Ltd | Stroemungsmittel-hauptzylinder, insbesondere fuer hydraulische druckbremsanlagen. |
| DE19820578A1 (de) * | 1998-05-08 | 1999-11-11 | Mannesmann Sachs Ag | Hydraulische Betätigungseinrichtung |
| EP1602543A1 (de) * | 2004-06-04 | 2005-12-07 | ZF Friedrichshafen AG | Hydraulikzylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112011104072A5 (de) | 2013-09-05 |
| DE102011104370A1 (de) | 2011-12-29 |
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