WO2014180480A1 - Sensorsystem mit integrierter führung und verdrehsicherung im crs - Google Patents
Sensorsystem mit integrierter führung und verdrehsicherung im crs Download PDFInfo
- Publication number
- WO2014180480A1 WO2014180480A1 PCT/DE2014/200203 DE2014200203W WO2014180480A1 WO 2014180480 A1 WO2014180480 A1 WO 2014180480A1 DE 2014200203 W DE2014200203 W DE 2014200203W WO 2014180480 A1 WO2014180480 A1 WO 2014180480A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- target
- piston
- clutch release
- clutch
- sensor
- Prior art date
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
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
- F16D25/083—Actuators 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/18—Sensors; Details or arrangements thereof
Definitions
- the invention relates to a clutch release of the hydraulic type, for a clutch, such as a dry or wet running clutch, for example.
- a clutch such as a dry or wet running clutch, for example.
- a dual clutch of a car or a truck with a designed to reduce a pressure chamber piston in which hydraulic fluid is compressible, the piston force-transmitting is operatively associated with a release bearing, further wherein a Wegmesssystem is provided, which is designed to sense the axial position of the piston, wherein there is further provided by a Wegmesssensor to be sensed target, at least axial forces from the piston receiving and axially along the Wegmesssensor is arranged along.
- the invention is in the field of disengagement systems, in particular central clutch release (CSC, i.e. concentric slave cylinder) housings. It is used in the sensing of the Ausenburgweges.
- CSC central clutch release
- PLCD permanent magnetic linear contactless displacement sensor systems using magnetic targets
- a standard PLCD must be divided into a receiver coil part and an electronic part because of the high temperatures in this range.
- the CSC ie the central clutch release device must then have an anti-rotation, so that the magnet is always exactly below or directly next to the sensitive element is guided, i. that the rotational association between the magnet and the sensor remains unchanged.
- PLCD displacement sensors consist essentially of a special core made of soft magnetic material, which is wound over its entire length by a coil, such as a primary coil and at the ends each have a further, preferably short evaluation coil.
- a permanent magnet approximated to the sensor leads to a local magnetic saturation and thus to a virtual division of the core. If the primary coil is occupied with a suitable alternating current, a voltage dependent on the position of the saturated region is induced in the evaluation coils. Thus, the length of the virtual parts of the core and thus the position of the saturated region can be determined.
- the supply of the sensor with a suitable alternating current and the processing, evaluation and conversion of the signals is often done by an external electronic module or by electronics integrated in the sensor.
- At the output of the electronic circuit is a linearly dependent on the location of the magnet signal, z. B. at a current interface of 4 to 20 mA or a voltage interface of 0 to 5 V or 10 V available.
- the magnet To prevent measurement errors, the magnet must be accurate and repeatable, i. especially free of play, are guided to Wegmesssensor. This usually requires a rotation lock. Also previously expensive magnetic guide slide are necessary. This often entails high costs. Even the use of a magnet as a target is relatively expensive.
- a displacement measuring system for clutch release systems with a movable component assignable magnetic element is disclosed, which is provided with a sensor electronics having sensor system which is arranged on a fixed component in the form of a housing of the piston-cylinder system.
- the sensor system is in operative connection with the magnetic element and the sensor electronics of the sensor system is arranged in a recess integrated in the housing.
- an inner ring of a release bearing is fixed, wherein a sensor for detecting the axial position of the annular piston is fixed relative to the housing stationary on the housing, and wherein the sensor is associated with an axially displaceable and guided magnetic body, with one on the inner ring fastened annular body for driving with the piston at its axial displacements is connected axially free of play, wherein the magnetic body is displaceable over its displacement constant distance to the sensor on the housing and engages with a guide shoe in a circumferential groove of the annular body axially backlash but radially movable.
- the displacement sensor is geometrically adapted to the non-rotatably mounted by the piston target that a rotation of the target is excluded relative to the displacement sensor via a positive connection.
- a sensor is provided with a plunger coil and target inserted therein, with the target attached to the plunger and at the same time serving to prevent rotation.
- the target is arranged and / or designed for immersion in the distance measuring sensor.
- a diving coil-like configuration can then be easily realized.
- a striking of the target in the interior of the displacement sensor ensures positive locking and then efficiently prevents a rotation of the target / piston to the displacement sensor.
- outside diameter of the target is adapted to a sensing space enclosed by the distance measuring sensor, on the one hand immersion of the target in the interior of the distance measuring sensor can be achieved / made possible and on the other hand the desired security against rotation can be achieved cost-effectively with mechanically loadable means.
- An advantageous embodiment is also characterized in that the displacement sensor has a coil which is present on a core having a central passage, whose inner diameter defines the outer diameter of the Sensierraumes.
- a non-contact path measuring system can then be realized, the cost of such a system is kept low, because on the one hand, the assembly is easy and on the other hand, the individual components can be made low.
- the core is constructed of or comprises a material suitable for a sliding bearing.
- Bronzelegleiteren eg. Using copper, white metal alloys, aluminum alloys, lead, plastic, such as particularly preferably PTFE, or ceramic have been found to be particularly suitable.
- Expensive magnetic materials can be dispensed with if the target comprises or is made up of a non-magnetic material.
- the target consists of an iron-containing material, is constructed as a steel sheet or transformer sheet, comprises ⁇ -metal, amorphous metal or nano-crystalline metal and / or crystalline ferrite.
- ⁇ -metal soft magnetic nickel-iron alloys are recommended, especially those having a high magnetic permeability of ⁇ ⁇ in the range of about 50,000 to 140,000. In this way, a precise measurement can be expected.
- the assembly of the individual components is simplified if the target is positively, positively and / or materially secured to a linkage, which is directly or indirectly, for example, with the interposition of a separate driver, axially and rotationally fixed to a bearing inner ring of the release bearing.
- the distance measuring sensor is connected to an evaluation electronics.
- a plunger coil for sensing has a number of advantages, such as the use of a plunger coil for sensing. that expensive magnets can be replaced by low-cost targets, that the target can be guided in the coil and thus at the same time forms a security against rotation, etc ..
- a very complex concept of the magnetic guide, as it was previously used, can be achieved by a sliding bearing of the coil on the target or of the target on the coil can be avoided.
- the distance measuring sensor defines with its plastic material an inner diameter within which the target is guided as free of play as possible. The tolerances in the system can be increased, thereby improving the guidance accuracy. Tilting, twisting, and / or a shift in the concentricity of the target within the distance measuring sensor then has no influence on the measuring accuracy.
- the sensor system can be used even at very high temperatures, with only the coil wire insulation is to be regarded as limiting, since it begins to melt at certain temperatures. Goods were expected to be hen temperatures especially high magnetic costs can be expected, this can now be ruled out. Also can be dispensed with the frequently used rare earth magnets, even in tense space situation, which minimizes the cost.
- the target in the bobbin is feasible.
- a target end can be designed so that a direct connection to the release bearing is possible, in particular under backlash in the axial direction.
- the shape of the target end then has no influence on the measurement, in particular if it is arranged axially outside the measuring coil. In this way, in a CRS, a Linearwegress be made.
- the highly accurate guidance of the magnet relative to the sensor chip can be omitted.
- the target material does not have to be made of high-quality magnetic material, but can consist of so-called transformer sheet metal.
- a bobbin of the displacement sensor and the target simultaneously form the anti-rotation. In this way, an LVDT (Linear Variable Differential Transformer) can be replaced. Also Vercardverhindernde dowel pins are no longer necessary.
- FIG. 1 shows a clutch release mechanism 1 according to the invention.
- the clutch release 1 is a hydrostatic clutch release (CSC) and intended for use on a clutch unit, such as a dual clutch.
- the clutch may be a dry-running clutch or a wet-running clutch. It can be used on cars or trucks.
- a seal 6 is present, which seals a pressure chamber 7.
- the pressure chamber 7 is supplied with hydraulic fluid, such as oil. The oil can be placed under reduction of the pressure chamber 7 under pressure. If the pressure in the pressure chamber 7 has been increased, displacement of the piston / annular piston 2 in the direction of the longitudinal axis 4, of a flange region 8 of the guide sleeve 3 and a sealing element 9 arranged there, is forced away.
- a bearing inner ring 1 1 of a release bearing designed as a roller bearing 12 is mounted at least axially fixed with the interposition of one or more other components. Normally, the bearing inner ring 1 1 is also non-rotatably mounted on the piston 2.
- a linkage 13 has a driver 14 and a coupling piece 15.
- the driver 14 and the coupling piece 15 are positively, positively and / or materially connected to each other, in the present embodiment, these two components form an integral (one-piece) and one-piece molded element.
- the driver 14 is positively, positively and / or materially connected to the bearing inner ring 1 1 connectable.
- a target 16 is attached.
- the target 16 can penetrate into a sensing space 17 of a displacement sensor 18.
- the target 16 is constructed of sheet steel, transformer sheet or other non-magnetic material.
- ⁇ -metal, amorphous metal or nano-crystalline metal has been found to be advantageous.
- Soft magnetic nickel-iron alloys with a high magnetic permeability of 70,000 to 120,000, in particular 100,000 are advantageous here.
- the displacement sensor 18 has a material suitable for sliding bearings as a core 19.
- the core 19 acts as a guide for the target 16.
- the core 19 is surrounded by wire windings forming a coil 20.
- the distance measuring sensor 18 is part of a position measuring system.
- a spring 21 serves as a biasing element and may be formed as a helical spring, in particular as a compression coil spring. List of numbers of clutch release
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112014002362.0T DE112014002362B4 (de) | 2013-05-10 | 2014-05-09 | Sensorsystem mit integrierter Führung und Verdrehsicherung in einem Kupplungsausrücker der hydraulischen Art |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013208598 | 2013-05-10 | ||
DE102013208598.2 | 2013-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014180480A1 true WO2014180480A1 (de) | 2014-11-13 |
Family
ID=50896136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2014/200203 WO2014180480A1 (de) | 2013-05-10 | 2014-05-09 | Sensorsystem mit integrierter führung und verdrehsicherung im crs |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102014208695A1 (de) |
WO (1) | WO2014180480A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113710910A (zh) * | 2019-04-16 | 2021-11-26 | 克诺尔商用车制动系统有限公司 | 位置检测单元、具有位置检测单元的离合器调节器和具有位置检测单元的车辆离合器 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016002823A1 (de) * | 2016-03-05 | 2017-09-07 | Wabco Gmbh | Sensoreinrichtung für einen Kupplungszentralausrücker, Kupplungszentralausrücker sowie Verfahren zum Betreiben der Sensoreinrichtung |
DE102016223608A1 (de) * | 2016-11-29 | 2018-05-30 | Schaeffler Technologies AG & Co. KG | Kolben-Zylinder-Anordnung, insbesondere für eine Kupplungsbetätigungseinrichtung eines Fahrzeuges |
DE102017117279B3 (de) * | 2017-07-31 | 2018-07-26 | Schaeffler Technologies AG & Co. KG | Sensorintegration für einen Kupplungsausrücker |
DE102017125849B4 (de) * | 2017-11-06 | 2019-07-04 | Schaeffler Technologies AG & Co. KG | Verfahren zur Ansteuerung eines Kupplungsbetätigungssystems und ein Kupplungsbetätigungssystem |
DE102018113397B3 (de) | 2018-06-06 | 2019-09-05 | Schaeffler Technologies AG & Co. KG | Nehmerzylinder für eine hydraulische Kupplungsbetätigung; Betätigungseinrichtung sowie Kupplungssystem |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003019026A1 (en) * | 2001-08-23 | 2003-03-06 | Kongsberg Automotive Asa | Clutch device |
DE10349173A1 (de) * | 2003-10-22 | 2005-05-19 | Zf Friedrichshafen Ag | Betätigungseinrichtung für eine Kupplung |
DE202006014024U1 (de) | 2006-09-08 | 2006-11-09 | Fte Automotive Gmbh | Zentralausrücker für eine hydraulische Kupplungsbetätigung |
DE102008057644A1 (de) | 2007-12-03 | 2009-06-04 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Wegmesssystem für Kupplungsausrücksysteme |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10018677A1 (de) * | 2000-04-14 | 2001-10-18 | Mannesmann Sachs Ag | Kupplungssystem mit einer Reibungskupplung und einer zugehörigen Betätigungseinrichtung |
DE102005053408B4 (de) * | 2004-11-19 | 2020-10-08 | Zf Friedrichshafen Ag | Betätigungseinrichtung |
DE102005049056B4 (de) * | 2005-10-13 | 2007-10-25 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Kupplungsbetätigungsvorrichtung |
CN2878124Y (zh) * | 2005-12-12 | 2007-03-14 | 瑞立集团瑞安汽车零部件有限公司 | 汽车离合器助力器 |
-
2014
- 2014-05-09 DE DE102014208695.7A patent/DE102014208695A1/de not_active Withdrawn
- 2014-05-09 WO PCT/DE2014/200203 patent/WO2014180480A1/de active Application Filing
- 2014-05-09 DE DE112014002362.0T patent/DE112014002362B4/de active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003019026A1 (en) * | 2001-08-23 | 2003-03-06 | Kongsberg Automotive Asa | Clutch device |
DE10349173A1 (de) * | 2003-10-22 | 2005-05-19 | Zf Friedrichshafen Ag | Betätigungseinrichtung für eine Kupplung |
DE202006014024U1 (de) | 2006-09-08 | 2006-11-09 | Fte Automotive Gmbh | Zentralausrücker für eine hydraulische Kupplungsbetätigung |
DE102008057644A1 (de) | 2007-12-03 | 2009-06-04 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Wegmesssystem für Kupplungsausrücksysteme |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113710910A (zh) * | 2019-04-16 | 2021-11-26 | 克诺尔商用车制动系统有限公司 | 位置检测单元、具有位置检测单元的离合器调节器和具有位置检测单元的车辆离合器 |
CN113710910B (zh) * | 2019-04-16 | 2024-02-23 | 克诺尔商用车制动系统有限公司 | 位置检测单元、具有位置检测单元的离合器调节器和具有位置检测单元的车辆离合器 |
Also Published As
Publication number | Publication date |
---|---|
DE112014002362A5 (de) | 2016-01-14 |
DE102014208695A1 (de) | 2014-11-13 |
DE112014002362B4 (de) | 2019-02-07 |
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