CN105452697A - Method for positioning piston - Google Patents
Method for positioning piston Download PDFInfo
- Publication number
- CN105452697A CN105452697A CN201480044301.2A CN201480044301A CN105452697A CN 105452697 A CN105452697 A CN 105452697A CN 201480044301 A CN201480044301 A CN 201480044301A CN 105452697 A CN105452697 A CN 105452697A
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder
- vehicle
- opening
- fluid
- 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.)
- Granted
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
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
-
- 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
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
-
- 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
- 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
-
- 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
- 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 slave cylinders for actuating clutches, i.e. master 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
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
-
- 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
- F16D2300/08—Details or arrangements of sealings not provided for in group F16D3/84
-
- 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
- F16D2500/50—Problem to be solved by the control system
- F16D2500/502—Relating the clutch
- F16D2500/50245—Calibration or recalibration of the clutch touch-point
- F16D2500/50251—During operation
- F16D2500/50263—During standing still
-
- 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
- F16D28/00—Electrically-actuated clutches
Abstract
The invention relates to a method for controlling an actuating system of an automated clutch in a motor vehicle. The control of the actuating system is accomplished by means of a control unit. The actuating system comprises a piston, a cylinder, and a sealing ring arranged on the piston or on the cylinder in a circumferential direction. The purpose of the method is to position the piston in the cylinder in an axial direction. The cylinder and/or the piston has an opening in the respective lateral surface of the cylinder and/or of the piston, over which opening the sealing ring can travel during a piston movement in the axial direction in both directions. The method is characterised in that, during a specified standstill situation of the vehicle, the piston is moved to a parking position in the cylinder, which parking position is selected in the cylinder in such a way that the sealing ring is positioned without overlap with the opening.
Description
Technical field
The present invention relates to a kind of method with the feature of preamble according to claim 1.
Using scope of the present invention and application purpose are hydrostatic actuators, are particularly useful for the actuator of clutch operating.
Background technique
German publication thing DE102012204635A1 discloses a kind of control apparatus with following function.DE19734038A1 discloses a kind of method of the through-flow circulation with through-flow openings in a kind of clutch brake and position for understanding through-flow openings.
By the present invention, be not in the vehicle of operation, have hydrostatic clutch system dual-clutch transmission clutch clutch actuation device in the location of piston in active cylinder is described.Hydrostatic clutch system is configured to have clutch actuation device, as this such as in FIG, in DE102010047800A1 and as described in DE102010047801A1.Clutch actuation device is so-called hydrostatic clutch actuator HCA (HydrostaticClutchActuator).This hydrostatic actuator is understood as and there is hydrostatic transmission section, such as with the actuator of the pressure piping of fluid, such as hydraulic fluid.Pressure in pressure piping is measured by pressure transducer.If should move connected element by hydraulic actuator, then hydraulic fluid moves in transmission section or pressure piping, and this is caused by the piston in active cylinder, and described active cylinder makes the piston movement in the slave cylinder be coupled by hydraulic fluid.If element should keep its position, the hydraulic fluid so transmitted in section pauses, and make the hydrostatic state that there is hydraulic fluid, described hydrostatic state gives actuator its title.
If clutch system rests in open mode (parking spot), namely under the through-flow groove in piston is in primary external Sealing, described primary external Sealing is placed on the inwall of cylinder, and there is negative temperature gradient, namely temperature such as drops to-30 DEG C from 80 DEG C, then occur freezing of seal geometry.This represents at the high temperature such as occurred in running state, and Sealing is elastic bendable and is arranged in groove partly.Thus, in this region of Sealing, form the type of " garland shape ".Be cooled to low temperature downwards by system, described state is frozen.If now operation system and piston axially move, so through-flow groove crosses Sealing, until for Sealing, there is close along ring circumferential direction, the smooth surface of piston, and overlapping not with through-flow groove.From this point, piston-cylinder-seal system should seal, but because Sealing is no longer very resilient at low temperatures, described Sealing no longer can to adapt to close, the smooth surface of piston with at high temperature identical degree.Therefore, because garland shape occurs gap between Sealing and piston face, therefore described gap causes the pressure leaking and then no longer can set up expectation.
In the scope of the document, term through flow hole, through-flow groove, through-flow openings and opening synonymously use substantially.Through flow hole is arranged in cylinder usually used as through-flow openings, and through-flow groove is arranged in piston usually used as through-flow openings.
Summary of the invention
The object of the invention is, propose a kind of scheme: by cause due to the stop position of seal radial in through-flow openings, namely overlapping in Sealing and through-flow openings, namely directly contact fluid leakage elimination.
Described object is realized by the method with feature according to claim 1.
Namely described object is realized by method described below:
A kind of method of the actuator for the automatic clutch in controller motor vehicle is proposed according to the present invention, wherein the control of actuator is undertaken by control apparatus, and the seal ring that actuator has piston and cylinder and arranges on piston or on cylinder along ring circumferential direction.According to the present invention, the method is set to in axial direction being located in cylinder by piston at this, wherein cylinder and/or piston have opening in the corresponding surface of cylinder and/or piston, described opening piston in axial direction in the two directions motion time can be crossed by seal ring.Propose at this according to the present invention, under the vehicle stop state preset of vehicle, piston movement is on the stop position in cylinder, and wherein stop position is chosen in cylinder, locates with making seal ring and piston zero lap.
Corresponding surface is the surface of the surface of piston and/or the inside of cylinder at this.Zero lap represents that seal ring and opening are not in direct contact with one another in stop position.
According to method of the present invention, therefore there is following advantage, piston is stopped during the vehicle stop state of vehicle in a region of cylinder, in this region, seal ring------when it is fixed on cylinder is completely surrounded by the smooth surface of piston and---when it is fixed on piston---is surrounded by the surface of the inside of cylinder completely, namely seal ring and opening do not have any contact, and described seal ring may adversely be deformed in described opening.
In an especially preferred mode of execution, propose at this, stop position is chosen to, and makes not occur between the fluid surrounded by piston in opening and cylinder body amass that flowing connects.
Another preferred embodiment in, propose at this, control apparatus has the flame-out tracking time starting from vehicle.After tracking time, control apparatus just turns off.
Another preferred embodiment in, this propose, the endurance of tracking time is predeterminable.
Another preferred embodiment in, propose at this, endurance of tracking time presets according to the fluid temperature (F.T.) of the fluid by piston and cylinder encirclement.Substitution fluid temperature, also can according to carrying out thermometry to which assembly or the temperature that calculates is determined, the temperature of consider actuator or clutch system or actuator or clutch system component.In order to determine tracking time, also can consider fluid or an assembly in described assembly cooling rate.
In another embodiment, propose at this, the endurance of tracking time is 30 minutes to the maximum.
In another especially preferred mode of execution, propose at this, during tracking time, piston is positioned to, and makes to there is flowing between the fluid surrounded by piston in opening and cylinder body amass and connects.
Another preferred embodiment in, this propose, when vehicle unlocks, piston is positioned to, make between the fluid surrounded by piston in opening and cylinder body amass exist flowing connection.
In the mode of execution of another alternative, propose at this, when activating the igniting of vehicle, piston is positioned to, and makes to there is flowing between the fluid surrounded by piston in opening and cylinder body amass and connects.
In the mode of execution of another alternative, propose at this, in the time period between unlock vehicle and the igniting activating vehicle, piston is positioned to, and makes to there is flowing between the fluid surrounded by piston in opening and cylinder body amass and connects.
In another especially preferred mode of execution, propose at this, when between the burn period of vehicle and when there is not tracking time at the same time, provide the vehicle stop state preset of vehicle.
Another preferred embodiment in, this propose, when additionally vehicle is unlocked, provide default vehicle stop state.
Accompanying drawing explanation
Other advantages of the present invention and favourable design proposal are accompanying drawing below and its theme described.
Accompanying drawing is shown specifically:
Fig. 1 illustrates the structure of the signal of hydrostatic clutch system,
Fig. 2 illustrates the sectional drawing of hydrostatic clutch actuator,
Fig. 3 illustrate piston according to stop position of the present invention: the primary external Sealing stopped on " through-flow groove closedown " position.
Embodiment
In FIG with prior art known, the hydraulic pressure that schematically illustrates, hydrostatic clutch actuator (HCA) schematically to illustrate the structure of the clutch system 1 of hydraulic pressure for example.Described schematic diagram only illustrates the structure for a clutch in two clutches of operating dual clutch device speed changer, carries out like the class of operation of second clutch.The clutch system 1 of hydraulic pressure comprises control apparatus 2 on master end 15, and described control apparatus controls actuator 3.When actuator 3 and piston 19 change position to the right along actuator path in cylinder 4, change the volume of cylinder 4, in cylinder 4, build pressure P thus, described pressure is passed to the slave end 16 of the clutch system 1 of hydraulic pressure via hydraulic pipe line 9 via pressure medium 7.Hydraulic pipe line 9 about its length and form fit in the constructional aspect of vehicle.On slave end 16, the pressure P of the pressure medium 7 in cylinder 4 ' causes change in displacement, and described change in displacement is delivered on clutch 8, to operate on it.Pressure P in cylinder 4 on the master end 15 of the clutch system 1 of hydraulic pressure can be determined by means of first sensor 5.First sensor 5 is preferably pressure transducer.Determined by means of the second sensor 6 by the distance along actuator path of actuator 3 process.
Schematic diagram in Fig. 1 in figs. 2 and 3-especially about having the cylinder-piston in combination 4,19,100 of opening 18,140-illustrate in greater detail.In FIG, opening is arranged in cylinder 4 as through flow hole 18, and in figs 2 and 3, opening illustrates as the through-flow groove 140 in piston 100.
Piston 100 rests on flow passing position in software engineering unlike so far, namely not in " through-flow groove is opened " state, do not make Sealing 110 overlapping with through-flow groove 140 and then be not formed into more or less in through-flow groove, but rest in " through-flow groove closedown " position (Fig. 3) according to the present invention, make Sealing 110 and through-flow groove 140 is not overlapping and then Sealing 110 only abuts on smooth piston face, and then do not contact with through-flow groove 140.
Flow passing position, i.e. " through-flow openings is opened " state have following object, can compensate the pressure change caused due to temperature change in active cylinder by means of compensation vessel 17.Now in order to prevent such as after longer road running not only towards the direction of higher temperature (after heat) but also occur low pressure or superpressure when cooling, should can realize variable (such as at the most 15 minutes) tracking time of control apparatus 2 after flame-out.
In the described time, piston 100 must remain on flow passing position, just to move in " through-flow openings closedown " position under namely remaining on " through-flow openings is opened " state after the described time.In addition in order to avoid the less desirable moment on clutch when engine start, should move to before engine start on flow passing position in software engineering, namely move in " through-flow openings is opened " state.This can carry out as in other system now from the following moment, in the described moment, is unblanked by vehicle, but the latest when " starting igniting " (terminal (Klemme) 15).
Reliably, by means of pressure transducer 5, the pressure still existed is monitored.
---also referred to as being stop position---there is on piston 100 through-flow groove 140 if the hydrostatic actuator for clutch operating is in parking spot, to compensate the volume compensation such as caused by temperature fluctuation in hydraulic section.Due to the elasticity of seal ring 110, seal ring 110 enters in through-flow groove 140 when its long period is radially on through-flow groove 140 at high temperature.By being cooled to low temperature, described seal ring is lost its elasticity and is become inflexibility.If piston 100 moves axially now to build pressure and crosses through-flow groove 140, so pressure can be built from surface is closed.Due to the elasticity obviously reduced, shape that is compulsory, that formed at high temperature in parking spot before seal ring maintains.Thus, the sealing function on closed surface is damaged and causes leakage.
Now, pass through software change, the through flow hole 18 of Sealing 110 not for another example so far on such through-flow groove 140 in piston 100 or in cylinder 4 is stopped, but piston 100 or cylinder 4 smooth outer surface on stop, and Sealing 110 does not directly contact with through-flow openings 18,140, as this obtains in " through-flow openings closedown " position.In addition in order to realize volume compensation, as long as vehicle is unblanked, but the latest when activating igniting, one side is by the tracking time integral of control apparatus and another aspect provides the instruction moved in " through-flow openings is opened " position.
Reference numerals list:
The clutch system of 1 hydraulic pressure
2 control apparatuss
3 actuators
4,4 ' cylinder
5 first sensors
6 second sensors
7 pressure mediums
8 clutches
9 hydraulic pipe lines
15 master ends
16 slave ends
17 compensation vessels
18 through-flow openings
19 pistons
100 pistons
110 primary external Sealings
120 secondary external Sealings
130 primary inner Sealings
140 through-flow openings
Claims (12)
1. the method for the actuator (3) of the automatic clutch (1) in controller motor vehicle, the control of wherein said actuator (3) is undertaken by control apparatus (2), and wherein said actuator (3) has piston (19, 100) and cylinder (4) and along ring circumferential direction at described piston (19, 100) seal ring (110) that is upper or that above arrange at described cylinder (4), with by described piston (19, 100) be in axial direction positioned in described cylinder (4), wherein said cylinder (4) and/or described piston (19, 100) cylinder (4) and/or piston (19, 100) in corresponding surface, there is opening (18, 140), described opening can be crossed by described seal ring (110) when piston in axial direction moves in the two directions, it is characterized in that, under the vehicle stop state preset of vehicle, described piston (19, 100) move on the stop position in described cylinder (4), wherein said stop position is chosen in described cylinder (4), make described seal ring (110) and described opening (18, 140) location, zero lap ground.
2. method according to claim 1, it is characterized in that, described stop position is chosen to, and makes at described opening (18,140) and cylinder body amass in the fluid (7) surrounded by described piston (19,100) between do not exist flowing connect.
3. the method according to any one of the claims, is characterized in that, described control apparatus (2) has the flame-out tracking time starting from described vehicle.
4. the method according to any one of the claims, is characterized in that, the endurance of described tracking time to preset.
5. the method according to any one of the claims, is characterized in that, carrys out the endurance of default described tracking time according to the fluid temperature (F.T.) of the fluid (7) surrounded by piston (19,100) and cylinder (4).
6. the method according to any one of the claims 1 to 5, is characterized in that, the endurance of described tracking time is at most 30 minutes.
7. the method according to any one of the claims, it is characterized in that, during described tracking time, described piston (19,100) be positioned to, make between the fluid (7) surrounded by described piston (19,100) in described opening (18,140) and described cylinder body amass, to there is flowing to connect.
8. the method according to any one of the claims, it is characterized in that, when unlocking described vehicle, described piston (19,100) be positioned to, make between the fluid (7) surrounded by described piston (19,100) in described opening (18,140) and described cylinder body amass, to there is flowing to connect.
9. the method according to any one of the claims 1 to 7, it is characterized in that, when activating the igniting of described vehicle, described piston (19,100) be positioned to, make between the fluid (7) surrounded by described piston (19,100) in described opening (18,140) and described cylinder body amass, to there is flowing to connect.
10. the method according to any one of the claims 1 to 7, unlocking in the time period between described vehicle and the igniting activating described vehicle, described piston (19,100) be positioned to, make at described opening (18,140) and described cylinder body amass in the fluid (7) surrounded by described piston (19,100) between exist flowing connect.
11. methods according to any one of the claims, is characterized in that, flame-out and during there is not described tracking time, provide the vehicle stop state preset of described vehicle at described vehicle simultaneously.
12. methods according to claim 11, is characterized in that, when additionally described vehicle is unlocked, provide described default vehicle stop state.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013215798 | 2013-08-09 | ||
| DE102013215798.3 | 2013-08-09 | ||
| PCT/DE2014/200320 WO2015018408A2 (en) | 2013-08-09 | 2014-07-14 | Method for positioning a piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105452697A true CN105452697A (en) | 2016-03-30 |
| CN105452697B CN105452697B (en) | 2017-12-08 |
Family
ID=51483183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480044301.2A Active CN105452697B (en) | 2013-08-09 | 2014-07-14 | Method for positioning piston |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105452697B (en) |
| DE (2) | DE112014003663B4 (en) |
| WO (1) | WO2015018408A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015212645A1 (en) * | 2015-07-07 | 2017-01-12 | Schaeffler Technologies AG & Co. KG | Clutch actuator for a motor vehicle with one-piece stator housing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19857707A1 (en) * | 1997-12-23 | 1999-06-24 | Luk Getriebe Systeme Gmbh | Clutch for vehicle transmission |
| EP1614577A1 (en) * | 2004-07-08 | 2006-01-11 | Luk Lamellen und Kupplungsbau GmbH | Method of operation of a hydraulic system for actuation of a clutch of a motor vehicle |
| DE102005029570A1 (en) * | 2004-07-08 | 2006-02-09 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Method for operating of hydraulic clutch in motor vehicle is such that piston of master cylinder in unloaded position of clutch is pushed into pressure chamber into standby position far enough for snifting orifice to be closed |
| DE102006047299A1 (en) * | 2005-10-29 | 2007-05-03 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Master cylinder for hydraulic system e.g. for clutch shifting device in drive chain of motor vehicle, has piston which can axially moveable is arranged in housing whereby throttle element is arranged on secondary side of master cylinder |
| DE102006058976A1 (en) * | 2005-12-23 | 2007-07-05 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Master cylinder e.g. for motor vehicle hydraulics, forms pressure-equalizing connection between primary and secondary pressure chambers when pressure in primary chamber is less than that in secondary chamber |
| CN201306398Y (en) * | 2008-10-24 | 2009-09-09 | 无锡英特帕普威孚液压有限责任公司 | Shaft type pneumatic clutch power takeoff |
| CN102256848A (en) * | 2008-12-16 | 2011-11-23 | 古斯塔夫马根维特有限两合公司 | Master cylinder |
| CN102834636A (en) * | 2010-04-08 | 2012-12-19 | 舍弗勒技术股份两合公司 | Control device and method for controlling |
| DE102011055645A1 (en) * | 2011-11-23 | 2013-05-23 | Gustav Magenwirth Gmbh & Co. Kg | master cylinder |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19734038A1 (en) | 1996-08-16 | 1998-02-19 | Luk Getriebe Systeme Gmbh | Motor vehicle drive method |
| EP0922167A4 (en) * | 1996-08-30 | 2004-04-14 | Kelsey Hayes Co | Electrically actuated hydraulic power cylinder |
| DE19960334A1 (en) * | 1999-01-08 | 2000-07-13 | Luk Lamellen & Kupplungsbau | Motor vehicle safety and control device has means for the automatic activation of a coupling in the drive train of a motor vehicle if required control signals are not received |
| RU2553618C2 (en) * | 2009-10-29 | 2015-06-20 | Шеффлер Текнолоджиз Аг Унд Ко.Кг | Hydrostatic drive |
| KR101798250B1 (en) | 2009-10-29 | 2017-11-15 | 섀플러 테크놀로지스 아게 운트 코. 카게 | Hydrostatic actuator |
| DE102010053543A1 (en) * | 2009-12-17 | 2011-06-22 | Schaeffler Technologies GmbH & Co. KG, 91074 | Master cylinder |
| DE102012204635A1 (en) | 2011-04-07 | 2012-10-11 | Schaeffler Technologies AG & Co. KG | Method for operating drivetrain of motor vehicle, involves deleting operating data volatile memory and resetting controller by test equipment in successive activation phase of controller |
-
2014
- 2014-07-14 CN CN201480044301.2A patent/CN105452697B/en active Active
- 2014-07-14 WO PCT/DE2014/200320 patent/WO2015018408A2/en active Application Filing
- 2014-07-14 DE DE112014003663.3T patent/DE112014003663B4/en active Active
- 2014-07-14 DE DE102014213621.0A patent/DE102014213621A1/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19857707A1 (en) * | 1997-12-23 | 1999-06-24 | Luk Getriebe Systeme Gmbh | Clutch for vehicle transmission |
| EP1614577A1 (en) * | 2004-07-08 | 2006-01-11 | Luk Lamellen und Kupplungsbau GmbH | Method of operation of a hydraulic system for actuation of a clutch of a motor vehicle |
| DE102005029570A1 (en) * | 2004-07-08 | 2006-02-09 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Method for operating of hydraulic clutch in motor vehicle is such that piston of master cylinder in unloaded position of clutch is pushed into pressure chamber into standby position far enough for snifting orifice to be closed |
| DE102006047299A1 (en) * | 2005-10-29 | 2007-05-03 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Master cylinder for hydraulic system e.g. for clutch shifting device in drive chain of motor vehicle, has piston which can axially moveable is arranged in housing whereby throttle element is arranged on secondary side of master cylinder |
| DE102006058976A1 (en) * | 2005-12-23 | 2007-07-05 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Master cylinder e.g. for motor vehicle hydraulics, forms pressure-equalizing connection between primary and secondary pressure chambers when pressure in primary chamber is less than that in secondary chamber |
| CN201306398Y (en) * | 2008-10-24 | 2009-09-09 | 无锡英特帕普威孚液压有限责任公司 | Shaft type pneumatic clutch power takeoff |
| CN102256848A (en) * | 2008-12-16 | 2011-11-23 | 古斯塔夫马根维特有限两合公司 | Master cylinder |
| CN102834636A (en) * | 2010-04-08 | 2012-12-19 | 舍弗勒技术股份两合公司 | Control device and method for controlling |
| DE102011055645A1 (en) * | 2011-11-23 | 2013-05-23 | Gustav Magenwirth Gmbh & Co. Kg | master cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105452697B (en) | 2017-12-08 |
| DE112014003663B4 (en) | 2020-09-24 |
| DE112014003663A5 (en) | 2016-07-28 |
| WO2015018408A2 (en) | 2015-02-12 |
| WO2015018408A3 (en) | 2015-10-01 |
| DE102014213621A1 (en) | 2015-02-12 |
| WO2015018408A9 (en) | 2015-11-19 |
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