WO2013156269A1 - Aktorsystem zur hydraulischen kupplungsbetätigung - Google Patents
Aktorsystem zur hydraulischen kupplungsbetätigung Download PDFInfo
- Publication number
- WO2013156269A1 WO2013156269A1 PCT/EP2013/056281 EP2013056281W WO2013156269A1 WO 2013156269 A1 WO2013156269 A1 WO 2013156269A1 EP 2013056281 W EP2013056281 W EP 2013056281W WO 2013156269 A1 WO2013156269 A1 WO 2013156269A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- master piston
- connection opening
- actuator
- clutch
- hydraulic fluid
- 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
- F16D25/12—Details not specific to one of the before-mentioned types
- F16D25/14—Fluid pressure 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
- 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
-
- 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
- F15B7/10—Compensation of the liquid content in a system
-
- 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
- F16D29/00—Clutches and systems of clutches involving both fluid and magnetic actuation
- F16D29/005—Clutches and systems of clutches involving both fluid and magnetic actuation with a fluid pressure piston driven by an electric motor
-
- 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
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/064—Control of electrically or electromagnetically actuated clutches
-
- 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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3026—Stroke
Definitions
- the invention relates to an actuator system for the hydraulic actuation of a clutch in a drive train of a motor vehicle.
- the invention relates to a control of a hydrostatic actuator of the actuator system.
- An actuator system for a hydraulic actuation of a clutch comprises a
- hydrostatic actuator as it is known for example from DE 10 2010 047 800 A1 or DE 10 2010 047 801 A1.
- Such an actuator operates a master piston in a master cylinder to exchange a hydraulic fluid with a slave cylinder by means of a pressure line.
- the slave cylinder includes a slave piston that operates the clutch.
- two clutches are provided in the drive train, which act on different transmission shafts, in each case only one of the clutches is closed.
- the clutch then transmits power in the drive train when the pressure in the slave cylinder is sufficiently high.
- a position of the master piston is coupled to the position of the clutch, but this coupling is subject to a number of factors.
- the clutch system in particular the hydraulic fluid, can be heated during operation, as a result of which it expands or a pressure of the hydraulic fluid increases.
- a cooling of the coupling system can lead to a reduced volume or pressure of the fluid.
- a connection opening between the supply reservoir and the master cylinder is provided, which is released in a so-called sniffer position of the master piston.
- the invention has for its object to provide a method and a system that allow to adjust working conditions of a hydraulic actuator system with improved precision as quickly as possible.
- the invention solves this problem by means of a method and an actuator system with the features of the independent claims. Subclaims give preferred embodiments again.
- An actuator system for the hydraulic actuation of a clutch comprises a master cylinder with a master piston, a reservoir for receiving hydraulic fluid, a connection opening between the reservoir and the master cylinder, wherein an opening degree of the connection opening is dependent on a position of the master piston, and a hydrostatic actuator for controlling a Position of the master piston.
- a control device for controlling the hydrostatic actuator is provided such that a movement speed of the master piston is high, while the connection opening is wide open, and low, while the connection opening is little opened.
- a position of the master piston is detected and the actuator is controlled at different speeds as a function of the position or the degree of opening.
- the movement speed of the master piston can in principle be arbitrary.
- the movement speed can be higher with a closed connection opening than with a partially opened connection opening.
- a snooping process can be carried out in this way. be feasible.
- the actuator system can thus be calibrated faster in order to enable a precise engagement and disengagement by means of the clutch and thus a precise and harmonious gear change operation of a connected transmission.
- the maximum movement speed increases monotonically in the region of the only partially opened connection opening with increasing opening degree. As a result, it can be ensured in a further improved manner that the pressure equalization intended by the snooping process takes place both quickly and precisely defined. Different dependencies of the speed of movement from the degree of opening are possible.
- the dependence is linear. Accelerations of the hydrostatic actuator or the master piston can be kept low in this way. The actuator can also be easily controlled so. In another embodiment, the dependence is constant on one or more portions of the region. When using several sections, a staircase course of the movement speed can be realized, which can also be easily implemented. In particular, the hydrostatic author can easily be controlled for movement at different, predetermined speeds.
- the movement speed of the master piston is controlled in the region of the only partially open connection opening as a function of a temperature in the region of the hydraulic fluid.
- the temperature used can be the direct temperature of the hydraulic fluid or a temperature on the basis of which the temperature of the hydraulic fluid can be approached with sufficient accuracy, for example an ambient temperature in the region of the slave cylinder, for example a clutch temperature.
- the movement speed of only one of the sections described above or of several or all sections can be controlled as a function of the temperature. The higher the temperature, the higher the speed can be.
- the open position can be adaptable.
- the master piston is moved into an open position, in which the connection partially open, determines that a pressure of the hydraulic fluid decreases more slowly than predetermined to an ambient pressure, and the open position adjusted so that the opening degree is increased.
- the master piston can only be moved on one side of the open position to actuate the clutch.
- the open position of the master piston can be calibrated to a value that on the one hand allows a sufficiently rapid pressure equalization between the reservoir and the master cylinder, but on the other hand avoids unnecessary movement of the master piston and in the case of another, for example, thermal reasons increased pressure the hydraulic fluid of a displacement of that position in which the connection opening is released, counteracts.
- a closed position ("closing point") of the master piston on which the communication port is being closed may be determined based on a pressure waveform of the hydraulic fluid when the master piston is moved in the direction of decreasing opening degree. Subsequently, the master piston can only be moved on one side of the specific closed position to actuate the clutch. This can prevent that an unacceptably high pressure build-up occurs when closing the connection opening before the closed position. In one embodiment, this merely has to be checked for whether the pressure of the hydraulic fluid is above a predetermined threshold value while the master piston is beyond an uncertainty range in which the actual closed position lies. This may allow the use of an advantageously simple pressure sensor for the pressure of the hydraulic fluid.
- Figure 1 is an actuator system for the hydraulic actuation of a clutch
- Figure 3 shows a relationship between the position of a master piston and a
- FIG. 4 shows an enlarged detail of the relationship shown in FIG.
- the clutch 105 is provided for the controlled closing or interrupting of a power flow in a drive train, in particular of a motor vehicle.
- a plurality of clutches 105 are provided in the drive train, wherein at any one time maximum one of the clutches is completely closed.
- the actuator system 100 includes a master cylinder 1 10, in which a master piston 1 15 is received, a slave cylinder 120, in which a slave piston 125 is received, a pressure line 130 for fluidly connecting the cylinder 1 10 and 120, and a trailer tank 135, by means of a connection opening 140 in the master cylinder 1 10 in dependence on a position of the master piston 1 15 fluid can be connected to the master cylinder 1 10.
- the master cylinder 1 10 the pressure line 130 and the slave cylinder 120 is a hydraulic fluid 145.
- the follow-up tank 135 is not sealed against an environment pressure tight, so that the hydraulic fluid 145 in the reservoir 135 ambient pressure, generally a surrounding air pressure has ,
- Hydraulic fluid 145 can be increased by moving the master piston 1 15 to the Kupp- ment 105 to close or produce a traction by the clutch 105 in the drive train.
- a reverse arrangement in which the clutch 105 is closed by spring force when the pressure of the hydraulic fluid 145 decreases, is alternatively also possible.
- the master piston 1 15 can be moved by means of a hydrostatic actuator 150 by the position of the master piston 1 15 in the master cylinder 1 10 is moved by the actuator 150.
- the actuator 150 preferably comprises a spindle drive 155 for converting a rotational into a translatory position, a drive motor 160 for providing the rotational position and a control device 165, which may also be provided separately from the actuator 150.
- the control device 165 is connected to a first sensor 170 for determining a temperature in the region of the hydraulic fluid 145 and / or a second sensor 175 for determining a pressure of the hydraulic fluid 145 in the region of the pressure line 130.
- the actuator 150 is actuated to move the master piston 15 in the master cylinder 110 such that the communication opening 140 is closed and via the position of the master piston 15 to open or closing required pressure of the hydraulic fluid 145 is provided. If the master piston 15 is in a position in which the pressure of the hydraulic fluid 145 is low during normal operation, then the master piston 15 in FIG. 1 can be moved further to the left in order to at least partially open the connection opening 140 in the context of a so-called sniffing operation release and allow an exchange of hydraulic fluid 145 between the master cylinder 1 10 and the reservoir 135.
- the snooping operation may be required when a temperature of the hydraulic fluid 145 has changed since a previous snooping operation.
- the actuator system 100 is recalibrated hydraulically or mechanically in order to establish a predetermined relationship between the position of the actuator 150 and the position of the clutch 105.
- FIG. 2 shows relationships 200 between a position and a maximum movement speed of the master piston 15 of the actuator system 100 from FIG. 1.
- a section of the master cylinder 110 is functionally represented with the master piston 15 and the connection opening 140.
- the right area above is a relationship between the position of the master piston 1 15 in the vertical direction and the time in horizontal Direction shown.
- three alternative heats of movement speeds of the master piston 1 15 in the master cylinder 1 10 are shown. Broken lines facilitate associations between sections of the three representations.
- the upper edge of the master piston 15 in FIG. 2 is in a zero position 205, in which the slave cylinder 120 is subjected to a minimal pressure.
- the master piston 1 15 is moved from the zero position 205 in FIG. 2 upwards.
- the master piston 1 15 moves down to a closed position 210, in which the connection opening 140 is just completely closed.
- the master piston 1 15 is then moved further into an open position 215, in which the connecting opening 140 to the back-up container 135 is sufficiently released.
- the open position 215 is shown without limiting the generality with a maximum possible opening degree of the connection opening 140.
- the open position 215 may also be defined above with reference to the illustration of FIG.
- the open position 215 may also be variably definable to allow an optimized snooping operation.
- the master piston 1 15 is controlled in its movement speed as a function of its position in the master cylinder 1 10.
- a curve 220 explains the relationship between the speed of movement and the position of the master piston.
- the snooping is prepared by the master piston 1 15 is moved from the zero position 205 in the closed position 210.
- the master piston 15 is moved further in the direction of the open position 215, so that the connection opening 140 is partially opened and then an opening degree of the connection opening 140 rises.
- a third temporal portion 235 of the master piston 1 15 is held in the open position 215.
- a section 240 the connection opening 140 is closed again by means of the master piston 15 until the master piston 1 15 has reached the closed position 210.
- the movement in section 240 preferably corresponds to the time-reversed process in section 230.
- a fifth temporal section 245 the master piston 1 15 is moved from the closed position 210 back to the neutral position 205.
- This section corresponds to the time reversed section 225. While the moving speed of the master piston 15 in the portion 225 when the communicating hole 140 is relatively wide open is large, the moving speed in the portion 230 when the communicating hole 140 is opened relatively small is smaller.
- the speed of movement may also be controlled based on a temperature of the temperature sensor of FIG. 1. If the temperature is high, the speed of movement may be higher than if the temperature is low to account for a temperature-dependent viscosity of the hydraulic fluid 145.
- Three alternative, exemplary speed curves 250, 255 and 260 illustrate a speed control of the master piston 15, which depends on the degree of opening of the partially released connection opening 140. Outside the sections 230 and 240, respectively, where the connection opening 140 is either completely open or completely closed, a suitable speed of the master piston 140 can be effected in a known manner.
- Section 230 below that in section 225, wherein the movement speed in section 230 is constant.
- the movement speed of the master piston 15 in the section 230 increases linearly with increasing opening degree of the connection opening 140.
- the speed of the master piston 1 15 at the open position 215 may be as large as the speed in section 225 or below.
- the speed of the master piston 15 in the section 230 is controlled in several sections at respectively constant speeds, depending on the opening degree of the connection opening 140. This results in the shown, stepped velocity curve 260. In this case, successively two, three or more constant speeds of the master piston 1 15 can be controlled.
- the master piston 15 in section 230 is preferably moved at a speed which, as shown, corresponds to the respective course in the section 230 in reverse chronological order.
- FIG. 3 shows a relationship 300 between the position of the master piston 15 and a pressure of the hydraulic fluid 145 of the actuator system of FIG. 1. In the vertical direction, a pressure of the hydraulic fluid 145 and in the horizontal direction, a position of the master piston 1 15 is shown.
- the relationship shown is exemplary and the indicated scale values are exemplary.
- a first course 305 corresponds to a movement of the master piston 15 in the positive direction, ie to the right in FIG. 3, while a second course 310 corresponds to a movement of the master piston 15 in the negative direction, that is to the left in FIG.
- the different courses 305, 310 result during a clutch actuation from a hysteresis effect due to friction in the real actuator system 100 from FIG. 1.
- a touch point 315 In a position of about 10 mm of the master piston 1 15 is a touch point 315 at which an actuation of the clutch 105 starts or ends, so a power circuit is interrupted by the clutch 105 upon actuation of the hydrostatic actuator 150 or closed at decreasing operation becomes.
- the touch point 315 In order to control the opening or closing of the clutch 105 accurately, it is necessary to know the touch point 315 with respect to the position of the master piston 1 15 as accurately as possible.
- the hydraulic fluid 145 warms up after the communication port 140 has been closed during a snooping operation, the paths 305 and 310 shift to the left. Such a shift may also have other reasons why the shift alone may not be compensable based on the temperature of the hydraulic fluid 145. Instead, the displacement can be eliminated by the hydraulic fluid 145 is freed from positive or negative pressure when the master piston 1 15 is moved to the sniffer position in section 230 in Figure 2.
- FIG. 4 shows an enlarged detail of the relationship shown in FIG.
- the closed position 210 is assumed in the position -1, 0 mm. However, the closed position 210 lies within an insecure zone 405, since an increased pressure in the region of the closed position 210, for example, leads to a deformation of a seal at the connection opening 140 may lead, so that the actual closed position 210 in the operation of the actuator system 100 in their position with respect to the master cylinder 1 10 may vary.
- the opening position 215 can be adjusted on the basis of a temperature of the hydraulic fluid 145, so that the open position 215 corresponds to a smaller opening degree with hot hydraulic fluid 145 than with cold hydraulic fluid 145.
- the pressure sensor 175 from FIG. 1 can also be used to adapt the closed position 210 accordingly.
- the closed position 210 may be adjusted if the master piston 15 is below or in FIG. 4 to the left of the illustrated uncertainty zone 405 and a predetermined threshold value 410 for the pressure is exceeded.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380020386.6A CN104246262B (zh) | 2012-04-16 | 2013-03-25 | 用于液压地操纵离合器的致动系统 |
JP2015506160A JP6223422B2 (ja) | 2012-04-16 | 2013-03-25 | クラッチを液圧式に操作するアクチュエータシステム、及び、そのシステムを制御する方法 |
DE112013002049.1T DE112013002049A5 (de) | 2012-04-16 | 2013-03-25 | Aktorsystem zur hydraulischen Kupplungsbetätigung |
US14/394,809 US9618058B2 (en) | 2012-04-16 | 2013-03-25 | Actuator system for hydraulic actuation |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012206195.9 | 2012-04-16 | ||
DE102012206195 | 2012-04-16 | ||
DE102012214223.1 | 2012-08-10 | ||
DE102012214223 | 2012-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013156269A1 true WO2013156269A1 (de) | 2013-10-24 |
Family
ID=48040194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/056281 WO2013156269A1 (de) | 2012-04-16 | 2013-03-25 | Aktorsystem zur hydraulischen kupplungsbetätigung |
Country Status (5)
Country | Link |
---|---|
US (1) | US9618058B2 (de) |
JP (1) | JP6223422B2 (de) |
CN (1) | CN104246262B (de) |
DE (2) | DE102013205237A1 (de) |
WO (1) | WO2013156269A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015131889A1 (de) * | 2014-03-03 | 2015-09-11 | Schaeffler Technologies AG & Co. KG | Hydrostatisches system und hydrostataktor mit diesem |
JP2016537584A (ja) * | 2013-11-14 | 2016-12-01 | シェフラー テクノロジーズ アー・ゲー ウント コー. カー・ゲーSchaeffler Technologies AG & Co. KG | ピストン−シリンダユニット及び該ユニットの作動方法 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013225999A1 (de) | 2013-12-16 | 2015-06-18 | Schaeffler Technologies AG & Co. KG | Hydrostatisch betätigtes Doppelkupplungssystem |
EP3084252A1 (de) * | 2013-12-17 | 2016-10-26 | Schaeffler Technologies AG & Co. KG | Hydrostatische aktuatoranordnung und verfahren zur montage einer derartigen aktuatoranordnung |
CN105899833B (zh) * | 2014-01-23 | 2018-09-21 | 舍弗勒技术股份两合公司 | 静液压操纵的离合器系统 |
DE102015201590A1 (de) | 2014-02-24 | 2015-08-27 | Schaeffler Technologies AG & Co. KG | Hydrostatisch betätigtes Kupplungssystem |
EP2927528B1 (de) * | 2014-03-31 | 2020-05-06 | Schaeffler Technologies GmbH & Co. KG | Kupplungspedalblock |
KR102532020B1 (ko) * | 2015-02-02 | 2023-05-12 | 섀플러 테크놀로지스 아게 운트 코. 카게 | 특히 차량을 위한 정유압 클러치 액추에이터의 보호 방법 |
DE102015210101A1 (de) | 2015-06-02 | 2016-12-08 | Schaeffler Technologies AG & Co. KG | Kupplungsbetätigungssystem |
CN106321684B (zh) * | 2015-06-26 | 2018-11-20 | 上海汽车集团股份有限公司 | 离合器控制系统、离合器系统、汽车及其电子控制单元 |
DE102016205876A1 (de) * | 2016-04-08 | 2017-10-12 | Schaeffler Technologies AG & Co. KG | Verfahren zum Begrenzen eines Drucks in einer hydrostatischen Betätigungseinrichtung |
KR101776528B1 (ko) * | 2016-10-10 | 2017-09-07 | 현대자동차주식회사 | 하이브리드 차량의 엔진 클러치 유압 리필 시 제어 방법 |
CN110337551B (zh) * | 2017-03-03 | 2020-11-17 | Gkn汽车有限公司 | 用于运行传动系的方法和装置 |
KR102406173B1 (ko) * | 2017-05-22 | 2022-06-07 | 현대자동차주식회사 | 엔진 클러치 제어 장치 및 방법 |
FR3069594B1 (fr) * | 2017-07-31 | 2019-08-23 | Valeo Embrayages | Actionneur d'embrayage |
DE102018128474A1 (de) | 2017-12-11 | 2019-06-13 | Schaeffler Technologies AG & Co. KG | Verfahren zur Einstellung einer Volumenausgleichsdauer in einem hydraulischen Kupplungsbetätigungssystem, vorzugsweise für ein Fahrzeug |
DE102019109977B4 (de) | 2018-05-15 | 2024-03-28 | Schaeffler Technologies AG & Co. KG | Verfahren zur Referenzierung eines Endanschlages eines hydrostatischen Kupplungsaktors |
DE102018008943A1 (de) * | 2018-11-14 | 2020-05-14 | Fte Automotive Gmbh | Verfahren zum Entlüften einer Vorrichtung für die hydraulische Betätigung wenigstens einer Reibkupplung und/oder wenigstens eines Getriebestellglieds |
CN109667849A (zh) * | 2018-12-29 | 2019-04-23 | 联合汽车电子有限公司 | 一种电液式自动离合器执行机构 |
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KR20030038698A (ko) * | 2001-06-13 | 2003-05-16 | 룩라멜렌운트쿠플룽스바우베타일리궁스카게 | 클러치 작동 장치 및 클러치 파라미터를 검출하는 방법 |
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WO2011124197A1 (de) * | 2010-04-08 | 2011-10-13 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zum steuern einer automatisierten kupplung |
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2013
- 2013-03-25 JP JP2015506160A patent/JP6223422B2/ja active Active
- 2013-03-25 WO PCT/EP2013/056281 patent/WO2013156269A1/de active Application Filing
- 2013-03-25 CN CN201380020386.6A patent/CN104246262B/zh active Active
- 2013-03-25 DE DE102013205237A patent/DE102013205237A1/de not_active Withdrawn
- 2013-03-25 US US14/394,809 patent/US9618058B2/en active Active
- 2013-03-25 DE DE112013002049.1T patent/DE112013002049A5/de active Pending
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DE19823772A1 (de) * | 1997-06-04 | 1998-12-10 | Luk Getriebe Systeme Gmbh | Verfahren zum Betreiben einer automatisierten Kupplung sowie zum Überprüfen eines Temperatursensors |
DE19857707A1 (de) * | 1997-12-23 | 1999-06-24 | Luk Getriebe Systeme Gmbh | Kraftfahrzeug |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016537584A (ja) * | 2013-11-14 | 2016-12-01 | シェフラー テクノロジーズ アー・ゲー ウント コー. カー・ゲーSchaeffler Technologies AG & Co. KG | ピストン−シリンダユニット及び該ユニットの作動方法 |
WO2015131889A1 (de) * | 2014-03-03 | 2015-09-11 | Schaeffler Technologies AG & Co. KG | Hydrostatisches system und hydrostataktor mit diesem |
Also Published As
Publication number | Publication date |
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CN104246262A (zh) | 2014-12-24 |
DE112013002049A5 (de) | 2015-01-15 |
CN104246262B (zh) | 2017-05-24 |
JP6223422B2 (ja) | 2017-11-01 |
US9618058B2 (en) | 2017-04-11 |
JP2015514198A (ja) | 2015-05-18 |
DE102013205237A1 (de) | 2013-10-17 |
US20150096864A1 (en) | 2015-04-09 |
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