WO2007137548A1 - Flow element for a hydraulic system - Google Patents
Flow element for a hydraulic system Download PDFInfo
- Publication number
- WO2007137548A1 WO2007137548A1 PCT/DE2007/000808 DE2007000808W WO2007137548A1 WO 2007137548 A1 WO2007137548 A1 WO 2007137548A1 DE 2007000808 W DE2007000808 W DE 2007000808W WO 2007137548 A1 WO2007137548 A1 WO 2007137548A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow element
- pressure chamber
- element according
- cylinder
- flow
- Prior art date
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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/001—Servomotor systems with fluidic control
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
-
- 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
- F15B21/006—Compensation or avoidance of ambient pressure variation
-
- 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
- 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
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/21—Accumulator cushioning means using springs
-
- 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
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/315—Accumulator separating means having flexible separating means
- F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
-
- 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
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/41—Liquid ports
- F15B2201/413—Liquid ports having multiple liquid ports
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
Definitions
- the present invention relates to a flow element for a hydraulic system and a hydraulic system.
- DE 10106958 discloses a hydraulic system, in particular for motor vehicles, comprising a slave cylinder, a master cylinder, a pressure medium line connecting the latter, and a pressure limiting valve integrated into the hydraulic system and switching in dependence on a pressure medium pressure having at least two connections to the inlet and outlet of pressure medium and at least one inlet and outlet connecting channel, in which the channel is closed by means of an elastic body.
- a pressure medium pressure having at least two connections to the inlet and outlet of pressure medium and at least one inlet and outlet connecting channel, in which the channel is closed by means of an elastic body.
- Such a component is also referred to as Kribbelfilter.
- An object of the present invention is therefore to provide a flow element of the type mentioned, which causes a lower component cost based on the amount and complexity of the individual components and thus lower costs. Furthermore, the assembly effort within the hydraulic system should be lower.
- a flow element for a hydraulic system with a master cylinder and a slave cylinder and a pressure line connecting them characterized in that the flow element comprises a pressure relief valve and a damping filter in a common housing.
- the damping filter comprises a pressure accumulator.
- the damping filter is preferably connected via a throttle to the pressure line. Due to the design of the throttle, the damping can be adjusted frequency-specific.
- the pressure accumulator of the damping filter comprises a membrane which delimits a damping filter pressure chamber resiliently against the environment.
- the pressure relief valve preferably comprises one non-return valve for the two flow directions, wherein the non-return valves each open at a specific opening pressure for the flow direction.
- the check valves preferably include hose collars, which are more preferably part of a collar assembly.
- the hose cuffs can thereby be manufactured and assembled as a component, which simplifies manufacturing and assembly.
- the sleeve assembly is integrally connected to a membrane disk of the membrane, which further simplifies manufacturing and assembly.
- the damping filter pressure chamber is connected via a groove in an insert part which separates the damping filter pressure chamber from a slave cylinder-side or master cylinder-side pressure chamber to the slave cylinder-side or master cylinder-side pressure chamber.
- the membrane comprises a spring washer, which is arranged on the outside of the membrane disk.
- the flow element comprises a rotationally symmetrical flow divider which separates the slave cylinder side pressure chamber from the master cylinder side pressure chamber.
- the rotationally symmetrical flow divider is arranged in a substantially rotationally symmetrical housing.
- the flow divider preferably comprises an inner cylinder member and a concentrically arranged outer cylinder member. This arrangement allows a particularly space-saving design.
- the inner cylinder element and the outer cylinder element preferably each carry hose collars, which form check valves with bores introduced into the cylinder elements.
- the damping filter pressure chamber is preferably connected via a channel with the master cylinder side or slave cylinder side pressure chamber. Due to the length and the diameter of the channel, the attenuation can be varied frequency-specific.
- a hydraulic system in particular for motor vehicles comprising a master cylinder, a slave cylinder and a pressure line connecting them, wherein in the pressure line an inventive flow element is arranged
- Fig. 1 is a schematic representation of a hydraulic system based on an embodiment of a clutch release device
- FIG. 2 shows a section through a first embodiment of an inventive flow element.
- FIG. 3 shows a section according to A-A in Fig. 2.
- FIG. 4 shows a section through a second embodiment of an inventive flow element.
- Fig. 1 shows a schematic representation of a possible embodiment of a hydraulic system 1 with a pressure relief valve (Kribbelfilter) 2 and a damping filter 6 based on a clutch release device 3 with a master cylinder 4 and a slave cylinder 5.
- the clutch release 3 actuates the clutch 8 hydraulically by acting on the master cylinder 4 by means of an actuator 9, which may be a foot pedal, an actuator, such as an electric actuator, or the like.
- an actuator 9 which may be a foot pedal, an actuator, such as an electric actuator, or the like.
- pressure is built up in the master cylinder 4 by means of a mechanical transmission 10, which builds up a pressure in the slave cylinder 5 via the pressure line 7 and via the pressure limiting valve 2 and the damping filter 6 arranged therein.
- the slave cylinder 5 can - as in the example shown - be arranged concentrically around the transmission input shaft 11 and axially on a - not supported - gear housing and the necessary disengaging force via a release bearing 14 on the clutch 8, or at the release elements such as a plate spring, muster. Further embodiments may provide a slave cylinder 5, which actuates a release mechanism via a disengaging mechanism and is arranged outside the clutch bell, wherein the latter acts on the disengagement mechanism axially by means of a piston arranged in hydraulic connection with the master cylinder in the slave cylinder housing. To apply the disengagement of the slave cylinder 5 is fixed to the housing respectively on the gear housing, which is not shown here, or attached to another housing-fixed component.
- the transmission input shaft 11 transmits, with the clutch 8, the torque of the internal combustion engine 12 to a not-shown gear and then to the drive wheels of a motor vehicle.
- the pressure limiting valve 2 and the damping filter 6 are arranged in the pressure line 7 for damping vibrations which are introduced by the crankshaft 13 and the clutch 8 via the slave cylinder 5 into the hydraulic system 1.
- the pressure relief valve (Kribbelfilter) 2 is flowed through by the hydraulic fluid flowing through the pressure line 7, the damping filter 6 is essentially a resilient pressure accumulator, so that only small amounts of hydraulic fluid flow into the accumulator or flow out and the damping filter 6 is not even flowed through.
- the flow element 15 comprises a master cylinder-side pressure chamber 17, which is connected to the master cylinder side of the pressure line 7, and a slave cylinder-side pressure chamber 18, which is connected to the slave cylinder side of the pressure line 7.
- the housing 16 comprises a master cylinder side hydraulic coupling 19 and a slave cylinder side hydraulic coupling 20.
- a flow divider 21 is arranged, which comprises a first flow channel 22 and a second flow channel 23.
- the first flow channel 22 is directly connected to the slave cylinder side pressure chamber 18 and connected via a first check valve 24 with an annular space 25 which is connected to the master cylinder-side pressure chamber 17.
- the first check valve 24 is formed by bores 26, in the present embodiment, there are two holes 26 which cooperate with a first tube sleeve 27. If the pressure in the slave cylinder-side pressure chamber 18 is higher than the pressure in the master cylinder-side pressure chamber 17, then the first hose collar 27 lifts off from the bores 26 so that hydraulic fluid can flow through the bores 26 from the slave cylinder-side pressure chamber 18 into the master cylinder-side pressure chamber 17.
- the second flow channel 23 is connected via an inlet bore 28 directly to the annulus 25. Holes 29, in the present embodiment, two holes 29, with a second tube sleeve 30, a second check valve 31, which works in the reverse direction as the first check valve 24, so at a geberzylinder physicallyen pressure chamber 17 higher pressure relative to the slave cylinder side pressure chamber 18 hydraulic fluid passes and in reverse direction locks.
- the first hose cuff 27 and the second hose cuff 30 are combined to form a sleeve assembly 32.
- the pressure relief valve 2 thus includes a respective check valve 24, 31 for the two flow directions.
- the check valves 24, 31 each open at a specific for the flow direction of the opening pressure.
- the flow element 15 further comprises the damping filter 6.
- the membrane disc 35 includes an outer annular portion 48 which is pressed by the spring washer 34 in the radial direction against the housing 16 and is thus clamped between the spring washer 34 and housing 16.
- the membrane disk 35 passes via a cylindrical part 36 and a connection part 37 in the sleeve assembly 32 and forms with this an integrally molded component.
- a membrane pressure chamber 38 Between the membrane 33 and the housing 16 there is a membrane pressure chamber 38. In the area of the master cylinder-side pressure chamber 17, the membrane pressure chamber 38 is enlarged towards the cylinder-side pressure chamber 17 to a damping filter pressure chamber 39.
- the damping filter pressure chamber 39 receives an insert 40, which separates the master cylinder-side pressure chamber 17 from the diaphragm pressure chamber 38.
- the master cylinder-side pressure chamber 17 and the membrane pressure chamber 38 are connected to each other via an inserting groove 41 introduced into the insert 40.
- hydraulic fluid flows into the diaphragm pressure chamber 38 through the inserting groove 41 and pressurizes the diaphragm 33.
- the membrane is then deformed in the direction of an arrow 42, wherein substantially the radially inner region of the membrane is deformed against the force of the spring washer 34. In this way, the diaphragm pressure chamber 38 increases against spring force.
- the slave cylinder-side pressure chamber 18 is enclosed by a slave-cylinder-side connecting piece 43, which has a disk-shaped part 44.
- the slave-cylinder-side fitting 43 pushes the flow divider 21 against the housing 16, wherein the first flow channel 22 and the second flow channel 23 are sealed with a seal 45 against each other and against the housing.
- the disc-shaped part 44 is fixed by a snap ring 46 in the housing 16 in axiaier direction.
- a cylindrical projection 47 of the slave-cylinder-side connecting piece 43 presses the sleeve assembly 32 onto the flow dividers 21 and fixes them there.
- Fig. 4 shows a section through a second embodiment of a flow element according to the invention 49.
- This embodiment also combines the functions of a pressure relief valve 2 and a damping filter 6 in a common housing, which is here provided with the reference numeral 50.
- the housing 50 comprises a housing pot 51 as a first housing component and a housing cover 52 as a second housing part.
- the housing cover 52 receives, as explained below, the components which assume the function of the damping filter 6, between the housing pot 51 and the housing cover 52, as shown below, the components are accommodated, which take over the function of the pressure limiting valve 2.
- the housing pot 51 and the housing cover 52 include a cylindrical valve space 53. In the cylindrical valve chamber 53, a flow divider 54 is arranged.
- This comprises an inner cylinder member 55 and an outer cylinder member 56.
- the inner cylinder member 55 is provided on the housing cover 52 side facing away with a bottom plate 57
- the inner cylinder member 55 and the outer cylinder member 56 are on the housing cover 52 side facing with a connecting ring 58 interconnected.
- the outer cylindrical member 56 proceeds on the side facing away from the housing cover 52 in a radially outer ring 59.
- the flow divider 54 thus has a meander-shaped structure, wherein the inner cylindrical member 55, the outer cylindrical member 56, the bottom plate 57, the connecting ring 58 and the outer ring 59 in one piece z.
- B. can be designed as an injection molded part. Alternatively, these can also be multi-piece z. B.
- first gap 60 belongs together with the space formed between the inner cylinder member 55 and the outer cylinder member 56 to a master cylinder-side pressure chamber 63.
- the second gap 62 belongs together with an outer annular space 65, the is limited by the outer cylinder member 56 and the outer ring 59, to a slave cylinder side pressure chamber 64.
- an inner annular space 66 is included.
- the master cylinder-side pressure chamber 63 is provided with a geberzylinder- side hydraulic coupling, not shown in Fig. 4.
- the slave cylinder-side pressure chamber 64 is provided with a non-illustrated in Fig. 4 slave cylinder hydraulic clutch. These can be configured similarly to the master cylinder-side coupling 19 in FIG. 3 and the slave cylinder-side hydraulic coupling 20 in FIG. 3 and serve, as shown in the previous embodiment, the insertion of the flow element 49 into the pressure line 7.
- the flow element 49 occurs at the point of the flow element 15 in Fig. 1, different reference numerals for the embodiments of Figures 2 and 3 or 4 have been chosen here only easier distinguishability of the two embodiments.
- the master cylinder-side pressure chamber 63 and the slave cylinder-side pressure chamber 64 are connected to each other via check valves.
- a first check valve 67 opens when the pressure in the master cylinder side pressure chamber 63 is greater than that in the slave cylinder side pressure chamber 64
- a second check valve 68 opens when the pressure in the slave cylinder side pressure chamber 64 is higher than in the master cylinder side pressure chamber 63.
- the first check valve 67 thus allows hydraulic fluid to flow through when the pressure in the master cylinder-side pressure chamber 63 is higher than in the slave cylinder-side pressure chamber 64 and otherwise locks, the second check valve 68 operates correspondingly reversed.
- the first check valve 67 is formed by a first tube sleeve 69, which surrounds the outer cylinder element 56 radially on the outside and thereby covers one or more first valve bore 70.
- the second check valve 68 is formed by a second hose sleeve 71, which surrounds the inner cylinder element 55 radially outward and covers one or more second valve bores 72.
- the first tube sleeve 69 is fixed by a securing ring 86 in the axial direction
- the second tube sleeve 71 is fixed by a securing ring 87 in the axial direction
- a circumferential annular groove 73 is radially outwardly mounted, in which a sealing ring 74 is arranged to seal the encoder cylinder-side pressure chamber 63 in front of the slave cylinder-side pressure chamber 64.
- the seal may be, for example, an elastomer seal with base leakage and swelling ring or an O-ring, alternatively, there may be a pressed connection here, which simultaneously fulfills the sealing function.
- the housing cover 52 includes an axially extending cylindrical portion 75, in which a channel 76 is introduced, which connects the slave cylinder-side pressure chamber 64 with a damping filter pressure chamber 77.
- the damping filter pressure chamber 77 is closed to the outside by a diaphragm 78, the pressure on the slave cylinder side pressure chamber 64 to the outside, this is indicated by an arrow 79, can buckle against the force applied by the diaphragm spring force.
- the diaphragm 78 comprises a diaphragm plate 80, which is substantially disc-shaped, and is supported on a housing-side ring 82 with an outer support ring 81, which is arranged on the outer circumference of the diaphragm plate 80 on the side facing away from the housing pot 51.
- the housing-side ring 82 may be, for example, a snap ring, which is arranged in an annular groove.
- the membrane 78 On the side facing the housing pot 51, and thus the side facing away from the outer support ring 81, the membrane 78 comprises a peripheral abutment lip 83 with which it is supported on the bottom 84 of the housing cover 52.
- the housing cover 52 comprises a housing cover cylinder 85 which, together with a bottom 84, forms a cup-shaped region for receiving the membrane 78.
- Both the housing pot 51, as well as the housing cover 52 and the flow divider 54 may be made as rotationally symmetrical parts.
- the connection between the housing pot 51 and housing cover 52 may, for. B. be designed as a welded joint, but may also be a clip connection or a screw connection.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Vehicle Body Suspensions (AREA)
- Details Of Valves (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112007001156.4T DE112007001156B4 (en) | 2006-06-01 | 2007-05-07 | Flow element for a hydraulic system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006025589 | 2006-06-01 | ||
DE102006025589.5 | 2006-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007137548A1 true WO2007137548A1 (en) | 2007-12-06 |
Family
ID=38267543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2007/000808 WO2007137548A1 (en) | 2006-06-01 | 2007-05-07 | Flow element for a hydraulic system |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR20090013747A (en) |
CN (1) | CN101460745A (en) |
DE (1) | DE112007001156B4 (en) |
WO (1) | WO2007137548A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009036438A1 (en) | 2008-08-28 | 2010-03-04 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Absorption filter for filtering pressure oscillations in hydraulic system for actuation of clutch of motor vehicle, has hose that is partially pulled over thorn, where hose rests against side of wall of hole and side of thorn |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014215926B3 (en) * | 2014-08-12 | 2015-06-18 | Schaeffler Technologies AG & Co. KG | Hydrostatic clutch actuator with overflow |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2167812A (en) * | 1984-11-24 | 1986-06-04 | Teves Gmbh Alfred | Device for controlling the pressure in an auxiliary-pressure supply system of a brake unit |
DE3609534C1 (en) * | 1986-03-21 | 1987-04-09 | Integral Hydraulik Co | Hydraulic accumulator |
EP0417443A1 (en) * | 1989-09-15 | 1991-03-20 | Robert Bosch Gmbh | Apparatus for preventing the blocking of the wheels of a vehicle |
DE4342167A1 (en) * | 1993-12-10 | 1995-06-14 | Bosch Gmbh Robert | Hydraulic braking system with drive slip control |
US5779328A (en) * | 1995-12-30 | 1998-07-14 | Robert Bosch Gmbh | Method for monitoring a brake system |
DE10106958A1 (en) | 2000-02-29 | 2001-08-30 | Luk Lamellen & Kupplungsbau | Hydraulic system, esp for vehicles, comprises a delivery cylinder, a receiver cylinder, a connecting pressure medium line, and a pressure limiting valve. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4444841C2 (en) * | 1994-12-16 | 1997-06-12 | Pacoma Gmbh | Hydraulic actuating device with a master cylinder and a slave cylinder |
DE10059382A1 (en) * | 1999-12-10 | 2001-06-13 | Luk Lamellen & Kupplungsbau | Hydraulic system, in particular, for motor vehicles comprises a pressure limiting valve with a closure element which at least over a part of its axial displacement is damped by means of a damping arrangement |
EP1496280B1 (en) * | 2003-07-09 | 2007-07-11 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Method for reducing judder vibrations in a friction clutch |
-
2007
- 2007-05-07 WO PCT/DE2007/000808 patent/WO2007137548A1/en active Application Filing
- 2007-05-07 DE DE112007001156.4T patent/DE112007001156B4/en not_active Expired - Fee Related
- 2007-05-07 KR KR1020087019185A patent/KR20090013747A/en not_active Application Discontinuation
- 2007-05-07 CN CNA2007800202533A patent/CN101460745A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2167812A (en) * | 1984-11-24 | 1986-06-04 | Teves Gmbh Alfred | Device for controlling the pressure in an auxiliary-pressure supply system of a brake unit |
DE3609534C1 (en) * | 1986-03-21 | 1987-04-09 | Integral Hydraulik Co | Hydraulic accumulator |
EP0417443A1 (en) * | 1989-09-15 | 1991-03-20 | Robert Bosch Gmbh | Apparatus for preventing the blocking of the wheels of a vehicle |
DE4342167A1 (en) * | 1993-12-10 | 1995-06-14 | Bosch Gmbh Robert | Hydraulic braking system with drive slip control |
US5779328A (en) * | 1995-12-30 | 1998-07-14 | Robert Bosch Gmbh | Method for monitoring a brake system |
DE10106958A1 (en) | 2000-02-29 | 2001-08-30 | Luk Lamellen & Kupplungsbau | Hydraulic system, esp for vehicles, comprises a delivery cylinder, a receiver cylinder, a connecting pressure medium line, and a pressure limiting valve. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009036438A1 (en) | 2008-08-28 | 2010-03-04 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Absorption filter for filtering pressure oscillations in hydraulic system for actuation of clutch of motor vehicle, has hose that is partially pulled over thorn, where hose rests against side of wall of hole and side of thorn |
Also Published As
Publication number | Publication date |
---|---|
DE112007001156B4 (en) | 2016-03-31 |
CN101460745A (en) | 2009-06-17 |
KR20090013747A (en) | 2009-02-05 |
DE112007001156A5 (en) | 2009-02-12 |
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