CN102213278B - Method for controlling an automated clutch - Google Patents
Method for controlling an automated clutch Download PDFInfo
- Publication number
- CN102213278B CN102213278B CN201110090271.7A CN201110090271A CN102213278B CN 102213278 B CN102213278 B CN 102213278B CN 201110090271 A CN201110090271 A CN 201110090271A CN 102213278 B CN102213278 B CN 102213278B
- Authority
- CN
- China
- Prior art keywords
- hydrostatic
- actuator
- clutch
- pressure
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 63
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 238000011156 evaluation Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
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- 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
- F16D48/066—Control of fluid pressure, e.g. using an accumulator
-
- 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
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1021—Electrical type
- F16D2500/1023—Electric motor
- F16D2500/1024—Electric motor combined with hydraulic actuation
-
- 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
- F16D2500/3024—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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/308—Signal inputs from the transmission
- F16D2500/30802—Transmission oil properties
- F16D2500/30803—Oil temperature
-
- 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
- F16D2500/501—Relating the actuator
- F16D2500/5016—Shifting operation, i.e. volume compensation of the master cylinder due to wear, temperature changes or leaks in the cylinder
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention relates to a method for controlling an automated clutch which is operated by means of a hydrostatic clutch operating system having a hydrostatic actuator which is operated with a hydrostatic fluid, the state of which changes during operation. The invention is characterized in that: at least one thermodynamic state quantity of the hydrostatic fluid is measured and used to prevent the formation of vapor bubbles or the occurrence of cavitation in the hydrostatic actuator.
Description
Technical field
The present invention relates to the method for auto-control clutch, this automated clutch is by oneThe hydrostatic clutch actuation system with hydrostatic actuator operates, and this hydrostatic actuator is with quietHydraulic fluid work, the state of this hydrostatic fluid changes at work.
Background technology
By German laid-open document DE19700935A1 known a kind of driving for operating motor vehicleThe device of the clutch in system. By German laid-open document DE102009009145A1 known onePlant the clutch system with hydrostatic clutch release system, wherein detect the spy that opens who connects separatelyProperty deviation, its mode is to measure the pressure of clutch release system according to the service speed of output cylinder pistonForce characteristic. The evaluation of the pressure condition relevant to the operational stroke of clutch can be by a pressure sensingDevice is realized, and this pressure sensor is combined in clutch release system, for example, exporting cylinder or connecingReceive in cylinder or in catheter pressure.
Summary of the invention
Task of the present invention is the service life of improving automated clutch, and this clutch is quiet by being provided withThe hydrostatic clutch actuation system of hydraulic actuator operates, and the pressure of this actuator is detected.
This task is by solving for the method for auto-control clutch, this automated clutchOperate by a hydrostatic clutch actuation system with hydrostatic actuator, this hydrostatic causesMoving device hydrostatic fluid operating, the state of this hydrostatic fluid changes at work, its solutionBe: measure at least one thermodynamic state amount of hydrostatic fluid and stop at hydrostatic with itThe formation of steam bubble or the appearance of cavitation in actuator. For cavitation-be also called suction (Holsog)-quiltBe interpreted as the formation of steam bubble in flowing liquid and unexpected condensation subsequently. Cavitation is by fluid middling speedThe variation of degree causes. Thermodynamic state amount is also referred to as thermokinetic parameters, and it is thermodynamic systemFeature, for example pressure, temperature, volume and entropy. In scope of the present invention, especially detect and use quietThe pressure of hydraulic fluid. But also can detect and use the temperature of hydrostatic fluid.
A preferred embodiment of the method is characterised in that: in the outlet side inspection of clutch actuation systemSurvey at least one thermodynamic state amount of hydrostatic fluid. Hydrostatic actuator for example comprises an outputCylinder, this output cylinder by hydrostatic conduit or hydraulic pipe-also referred to as catheter pressure-with one connectReceive cylinder and form connection. Be provided with the actuator side of output cylinder also referred to as outlet side. Be provided with similarly reception cylinderActuator side be called as receiver side. In scope of the present invention, find: the outlet side pair of actuatorEspecially dangerous in cavitation. Determined by the power of slippaging of clutch at receiver side pressure, so that occur hereLittle cavitation.
Another preferred embodiment of the method is characterised in that: the outlet side of gaging clutch operating systemThe pressure of upper hydrostatic fluid and with it stop formation or the cavitation of steam bubble in hydrostatic actuatorAppearance. This pressure is preferably detected by a pressure sensor, and this pressure sensor is installed in defeatedGo out on cylinder or on the outlet side end of the catheter pressure that output cylinder is connected with reception cylinder.
Another preferred embodiment of the method is characterised in that: an outlet side pressure sensor of usePressure signal is controlled hydrostatic actuator like this, to make not form steam bubble in hydrostatic actuatorOr there is not cavitation. The motion of hydrostatic actuator basis detects according to a further aspect in the inventionPressure conforms with destination and changes, for example, change by an electronic servo drive. In these feelingsUnder condition, especially change speed and/or the direction of motion of hydrostatic actuator. Can detect in conversion hydrostatic streamThe temperature of body, for example, detect by a temperature sensor. Can calculate hydrostatic by temperature signalThe viscosity of fluid. Can estimate thus the pressure of hydrostatic fluid.
Another preferred embodiment of the method is characterised in that: under clutch is opened situation, detect phaseDuring to little pressure, the operational movement of hydrostatic actuator is slowed down. The actuator pressure example detectingAs with a reference value or the comparison of a low pressure limit value. Once lower than this reference value or low pressure limit value,Can make definitely operational movement slack-off. Avoid in an advantageous manner stopping of actuator, therefore mayThe aspiration procedure needing can not interrupted in undesirable mode.
Another preferred embodiment of the method is characterised in that: at least one thermodynamics of hydrostatic fluidQuantity of state is processed in actuator control apparatus. When lower than low pressure limit value, for example, can reduceThe large actuator velocity allowing. Actuator control apparatus for example comprises an actuator controller, at itIn for example combine the position control of an actuator. Actuator controller in traditional system for exampleCarry out monitoring function.
Another preferred embodiment of the method is characterised in that: at least one thermodynamics of hydrostatic fluidQuantity of state is processed in drive system control device. Drive system control device for example comprises that one is drivenMoving system controller, can depend on state by it the variation of pressure signal is responded, to makeDriving comfort can or only not be affected tinily. In drive system control device, for example can pass throughThe adaptation of the predetermined value of actuator position is used thermodynamic state amount.
Another preferred embodiment of the method is characterised in that: detect the viscosity of hydrostatic fluid, its sideFormula is to carry out the pressure of evaluation hydrostatic fluid according to the speed of actuator and/or the direction of motion. For viscosity-also claim viscosity-the be understood to internal friction in gas and liquid. In the insignificant situation of viscosityDownforce is substantially only relevant to the slippage power relevant with the stroke of slippaging of clutch. Only on receiver sideOr the friction of slippaging in system can cause little deviation relatively with the direction of motion. Therefore pressure approxOnly relevant to actuator range. But along with the increase of fluid viscosity has also produced one with velocity correlationComponent. By the evaluation deducibility of the velocity-dependent that sends pressure being gone out to the viscosity of hydrostatic fluid,This evaluation preferably carries out in a region of clutch characteristics curve, in this region, only exists and pushes awayThe little stroke correlation of making a concerted effort, for example, when in the situation that clutch is opened.
Another preferred embodiment of the method is characterised in that: in the time determining the viscosity significantly increasing,Extend the suction duration. When determine the viscosity that hydrostatic fluid significantly increases by pressure signal,Can utilize this information to extend the suction duration, extend the duration that SS is opened. CauseEven if this also can ensure in the case of the anxious corresponding high fluid viscosity of low temperature: required volume occursCompensation. This evaluation is preferably in drive system control device and carries out.
Another preferred embodiment of the method is characterised in that: clutch is by hydrostatic actuator andIndividual output cylinder and a reception cylinder directly operate. " directly " mean: the hydrostatic of actuatorDirectly act on clutch pressure, especially middle connection lever actuater. Clutch preferably makesLaminated type clutch, especially double clutch.
Other advantage of the present invention, feature and details can be by obtaining in the following description, in this explanationDescribe with reference to the accompanying drawings each embodiment in detail.
Brief description of the drawings
In unique accompanying drawing, represent simplifiedly a clutch for operation automation slip clutchDevice operating system.
Detailed description of the invention
In Fig. 1, represent simplifiedly for an automated clutch 10, the especially two clutches of automationThe clutch actuation system 1 of device 10. This clutch actuation system 1 is in the drive system of an automobileConfiguration is given and is made to the clutch 10 of slip clutch and comprises an output cylinder 4, and this output cylinder is logicalCross a hydraulic pipe 5 that is also referred to as catheter pressure and be connected with a reception cylinder 6, a receptionPiston 7 can, receiving reciprocally motion in cylinder 6, receive piston by an operating mechanism and be preferably inDirect control clutch in the middle situation that connects a bearing.
Output cylinder 4 is connected with a compensation vessel 12 by a connecting hole, and one sends piston 14Can reciprocally motion in output cylinder 4. Output cylinder 4, hydraulic pipe 5, receives cylinder 6, receives piston7 and send piston 14 be a part for a hydrostatic actuator 19, this actuator can pass through an electricityMoving servo drive 20 drives, and this servo drive is also referred to as actuator drive. WatchTake drive unit and comprise an actuator motor 22, this motor is by an actuator transmission device24 are coupled with transmission piston 14. The driving of actuator motor 22 rotatablely moves by actuator transmissionDevice 24 converts the lengthwise movement or the translational motion that send piston 14 to.
Liquid in the hydraulic pressure or the hydrostatic section that comprise output cylinder 4, hydraulic pipe 5 and reception cylinder 6Pressure detects by a pressure sensor 30, and this pressure sensor is installed on hydraulic pipe 5.Pressure sensor 30 will provide pressure signal, and this pressure signal is also referred to as actuator pressure signal.
The pressure signal that represents pressure sensor 30 by arrow 41 and 45 in Fig. 1 is at an actuatorIn control device 40 by evaluation. Actuator control apparatus 40 comprises an actuator controller, its exampleAs the position adjustments for clutch 10 and monitoring. Represented by other arrow 42 and 43: in order to enterOne step is processed the pressure signal of mensuration is continued to send to drive system control device.
In hydrostatic clutch actuator because the hydraulic fluid viscosity strongly increasing when the low temperature can be ledCause: the fluid pressure on outlet side has very little steam pressure lower than the steam pressure of liquid and formationSteam bubble and occur cavitation. This problem is because the little pressure receiving in cylinder strengthens, this little pressure asCaused by little clutch engagement force. The power of slippaging of the clutch especially opening on laminated type clutch veryLittle. Therefore the method according to this invention is particularly preferably applied on the laminated type clutch of direct control.
The pressure signal detecting by pressure sensor 30 is as passed through shown in arrow 41,42 and 43,45Ground in the time of the control of clutch actuator 19 by actuator control device 40 and drive system control device50 use in this wise,, when clutch 10 opens while there is low pressure in situation, make actuator velocity decline.The processing of actuator pressure signal can be a local actuator control that belongs to actuator control apparatus 40The decline of the actuator velocity of carrying out in instrument and allow by maximum is changed. In drive system or drivingIn the included transmission control instrument of system control device 50, for example come like this actuator signal to ringShould, be able to adaptation with the given position predetermined value that makes actuator 19.
Should note in the case causing such situation, wherein can not stop the formation of steam bubble.This is for example such situation: after an aspiration procedure, will cause the obviously cooling of hydrostatic fluid.The volume that makes thus to move into the hydrostatic fluid in actuator 19 dwindles, so that in the time aspirating next time is onlyThe volume of disappearance can cause the formation of cavitation. Because necessary suction is unescapable, pass through pressureSensor 30 only causes the reduction of actuator velocity to the identification of crossing low-pressure, but does not cause actuator 19Stop.
The pressure compensation meeting the requirements by actuator 19 is called as suction, wherein exports cylinder piston 14Be pulled back to resting position, to be released into the connecting hole of compensation vessel 12. Can by release connection holeRealize the pressure compensation between output cylinder 4 and compensation vessel 12.
The viscosity of destination mensuration hydrostatic fluid, its mode will be conformed with according to a further aspect in the inventionTo come hydrostatic evaluation according to actuator velocity and the direction of motion. This pressure base in the time that viscosity can be ignoredOnly relevant to the slippage power relevant with the stroke of slippaging of clutch 10 in basis. But along with the increasing of fluid viscosityLarge also produced one with the component of velocity correlation. By the evaluation to the velocity-dependent that sends pressureDeducibility goes out the viscosity of hydrostatic fluid, and this evaluation is preferably in a region of clutch characteristics curveIn carry out, in this region, there is the little stroke correlation of power of slippaging, the feelings of for example opening when clutchUnder condition.
When determine significantly the increasing of fluid viscosity by pressure signal, also can utilize this information to changeBecome suction time, change in other words the duration that connecting hole is opened, this connecting hole is also referred to as to be taken outSucker. Therefore in the time of low temperature and corresponding high fluid viscosity, also can ensure the generation of cubage compensation. But because ofOnly can in drive system control device 50, determine for this, therefore need to make pressure information and possible passContinue to send to drive system control device 50 or corresponding drive system control in the information underspeedingInstrument.
Claims (10)
1. for the method for auto-control clutch (10), this clutch activates by having hydrostaticThe hydrostatic clutch actuation system (1) of device (19) operates, and this hydrostatic actuator is by quiet liquidPower fluid operating, the state of this hydrostatic fluid changes at work, it is characterized in that: detectAt least one thermodynamic state amount of this hydrostatic fluid, next by this at least one thermodynamic state amountStop and in this hydrostatic actuator (19), form steam bubble or occur cavitation.
2. according to the method for claim 1, it is characterized in that: in described clutch actuation system (1)Outlet side detect described at least one thermodynamic state amount of described hydrostatic fluid.
3. according to the method for claim 1, it is characterized in that: detect described clutch actuation system (1)Outlet side on the pressure of hydrostatic fluid, stop at described hydrostatic actuator with this pressure(19) in, form steam bubble or occur cavitation.
4. according to the method for claim 3, it is characterized in that: use outlet side pressure sensor (30)Pressure signal control so described hydrostatic actuator (19), make at described hydrostatic actuator(19) in, do not form steam bubble or do not occur cavitation.
5. according to the method for any one in claim 1 to 4, it is characterized in that: when at described clutch(10) while detecting relatively little pressure in situation about opening, described hydrostatic actuator (19)Operational movement is slowed down.
6. according to the method for any one in claim 1 to 4, it is characterized in that: described hydrostatic fluidDescribed at least one thermodynamic state amount processed in actuator control apparatus (40).
7. according to the method for any one in claim 1 to 4, it is characterized in that: described hydrostatic fluidDescribed at least one thermodynamic state amount processed in drive system control device (50).
8. according to the method for any one in claim 1 to 4, it is characterized in that: detect described hydrostaticThe viscosity of fluid, its mode is to described according to the speed of described actuator (19) and/or the direction of motionThe pressure of hydrostatic fluid is analyzed.
9. method according to Claim 8, is characterized in that: in the time determining the viscosity significantly increasing,Extend the suction duration.
10. according to the method for any one in claim 1 to 4, it is characterized in that: described clutch (10)Receive cylinder (6) directly by described hydrostatic actuator (19) and an output cylinder (4) with oneGround operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010014197.6 | 2010-04-08 | ||
| DE102010014197 | 2010-04-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102213278A CN102213278A (en) | 2011-10-12 |
| CN102213278B true CN102213278B (en) | 2016-05-04 |
Family
ID=44744727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110090271.7A Expired - Fee Related CN102213278B (en) | 2010-04-08 | 2011-04-08 | Method for controlling an automated clutch |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102213278B (en) |
| DE (1) | DE102011014573A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343928A (en) * | 2013-07-31 | 2015-02-11 | 中国科学院理化技术研究所 | Hydraulic transmission device based on liquid metal |
| DE102019215971A1 (en) * | 2019-10-17 | 2021-04-22 | Robert Bosch Gmbh | Hydrostatic arrangement |
| CN113294455B (en) * | 2021-04-27 | 2023-01-03 | 浙江吉利控股集团有限公司 | Electro-hydraulic actuator for clutch and control method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2317933A (en) * | 1996-08-16 | 1998-04-08 | Luk Getriebe Systeme Gmbh | An automatic clutch control device with fluid volume compensation means |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19700935A1 (en) | 1996-01-31 | 1997-08-07 | Luk Getriebe Systeme Gmbh | Operating apparatus for constituents of power train in motor vehicle |
| JP5023372B2 (en) * | 2000-11-22 | 2012-09-12 | シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト | Clutch device |
| CN100350167C (en) * | 2002-09-19 | 2007-11-21 | 卢克摩擦片和离合器两合公司 | Apparatus and method for avoiding reference position move |
| EP1612445A1 (en) * | 2004-06-30 | 2006-01-04 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Method for controlling the compensation of the hydraulic stroke |
| WO2008077370A1 (en) * | 2006-12-22 | 2008-07-03 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Torque converter with multiple functions with a lever spring, and method for controlling the hydraulic pressure and flow |
| DE102009009145B4 (en) | 2008-03-03 | 2018-10-04 | Schaeffler Technologies AG & Co. KG | coupling system |
-
2011
- 2011-03-21 DE DE201110014573 patent/DE102011014573A1/en not_active Ceased
- 2011-04-08 CN CN201110090271.7A patent/CN102213278B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2317933A (en) * | 1996-08-16 | 1998-04-08 | Luk Getriebe Systeme Gmbh | An automatic clutch control device with fluid volume compensation means |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102213278A (en) | 2011-10-12 |
| DE102011014573A1 (en) | 2011-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: German Herzogenaurach Applicant after: SCHAEFFLER TECHNOLOGIES AG & CO.KG Address before: German Herzogenaurach Applicant before: Schaeffler Technologies GmbH |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 |