CN107429760A - Hydraulic assembly for a hydraulically actuated friction clutch and method for actuating a hydraulically actuated friction clutch - Google Patents
Hydraulic assembly for a hydraulically actuated friction clutch and method for actuating a hydraulically actuated friction clutch Download PDFInfo
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- CN107429760A CN107429760A CN201680015937.3A CN201680015937A CN107429760A CN 107429760 A CN107429760 A CN 107429760A CN 201680015937 A CN201680015937 A CN 201680015937A CN 107429760 A CN107429760 A CN 107429760A
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- China
- Prior art keywords
- pressure
- hydraulic
- switch unit
- volume flow
- clutch
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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
- 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
- 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
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
- F16D2048/0275—Two valves arranged in parallel, e.g. one for coarse and the other for fine control during supplying or draining fluid from the actuation cylinder
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention relates to a hydraulic assembly for a hydraulically actuated friction clutch, having at least the following components: -a volumetric flow source for providing a required hydraulic volume; a hydraulic supply line, which is connected to a volume flow source; a hydraulic clutch cylinder which can be supplied by a volume flow source via a hydraulic supply line. The hydraulic assembly is characterized in that it further comprises at least the following components: a switching unit having an input, a first closable output and a second closable output, the switching unit being connected by the input by means of a hydraulic input line to a volume flow source; -a pressure converter for converting a smaller input pressure to a higher output pressure; a hydraulic direct line, by means of which the first output of the switching unit and the hydraulic clutch cylinder are connected in communication; a hydraulic first switching line, by means of which the second output of the switching unit is connected in communication with the pressure converter on the input side; a second hydraulic conversion line, by means of which the pressure converter is connected on the output side in communication with the clutch cylinder. The invention also relates to a method for actuating a hydraulically actuated friction clutch. With the hydraulic assembly proposed here, a cost-effective low-pressure volume flow source can be used for the entire hydraulic actuation range of the friction clutch.
Description
Technical field
The present invention relates to a kind of hydraulic package for hydraulic operation formula friction clutch, and a kind of friction clutch,
Particularly for motor vehicle drivetrain, and a kind of method for manipulating hydraulic operation formula friction clutch.Such as according to type,
A kind of such hydraulic package is illustrated in also undocumented DE 10 2,013 222 434.
Background technology
The present invention relates to a kind of hydraulic package of the underground for clutch actuator, the hydraulic package is used in
The setting in the volume flow source of the friction clutch with two different rigid scopes becomes easy and made with being used to save
Cause this possibility.Have found, the typical clutch indicatrix on clutch process has two rigid stages.
In first stage, pressure is low and as the volume flow of supply friction clutch only slightly rises.Pressed in friction clutch
During process through ventilation stroke when be such case；Because and pressing force relatively long in this trip is small, because pressing
There is not yet contact between plate and corresponding frictional disk or (relatively soft) friction facings spring assembly is compressed.Second
In stage, pressure passes through supplied volume flow and increased much better thanly.Pressed during the pressing process of friction clutch in structure
It is such case during pressure, during the pressing, stroke is limited in due to elasticity and caused in deformation and therefore phase
To small, and during the pressing, pressing force is set to reach its maximum.Therefore, for dynamics, volume flow source is necessary
Relatively large volume flow under relatively small pressure is provided and is used for the first stage, and is provided obvious under significantly higher pressure
Smaller size smaller stream is used for second stage.Both requirements cause, and set the current over dimensioning in volume flow source.
The content of the invention
Based on this, the task of the present invention is：Overcome at least in part from it is known in the art the shortcomings that.From rights to independence
Profit requires to draw the favourable embodiment party for according to feature of the invention, illustrating the independent claims in the dependent claims
Formula.The feature of claim can by it is all it is technically significant in a manner of combine, wherein, to this it is also contemplated that from
The explanation of specification afterwards and the feature from accompanying drawing, supplement configuration of the invention include the feature.
The present invention relates to a kind of hydraulic package for hydraulic operation formula friction clutch, the hydraulic package at least has
Following part：
The volume flow source of-hydraulic pressure volume being used for required by providing；
The intake line of-hydraulic pressure, the intake line of the hydraulic pressure are connected onto volume flow source；
The clutch cylinder of-hydraulic pressure, the clutch cylinder of the hydraulic pressure can be by the intake line of the hydraulic pressure by volume flow source
Supply.Hydraulic package is primarily characterized in, in addition at least following part：
- switch unit, it is exported with input, with the first output end that can be closed and with can close second
End, wherein, switch unit is communicatively connected by input by means of the intake line of hydraulic pressure with volume flow source；
- pressure transducer, for less input pressure to be converted into higher output pressure；
The direct pipeline of-hydraulic pressure, first output end and hydraulic pressure of switch unit are made by the direct pipeline of the hydraulic pressure
Clutch cylinder communicatively connects；
First conversion pipeline of-hydraulic pressure, the second output end of switch unit is made by the first conversion pipeline of the hydraulic pressure
Communicatively it is connected in input side with pressure transducer；With
- hydraulic pressure second conversion pipeline, by the hydraulic pressure second conversion pipeline make pressure transducer outlet side with
Clutch cylinder communicatively connects.
Preferably, hydraulic package is provided for hydraulic operation formula friction clutch, in the friction clutch, clutch
Indicatrix has two rigid stages.By the clutch cylinder of hydraulic pressure provide for friction clutch required pressing force and
Required pressing stroke.Therefore, the clutch cylinder of hydraulic pressure is situated between by volume flow source, such as pump and hydraulic medium reservoir with hydraulic pressure
Matter, such as oil or brake fluid correspondingly supply.Here, setting the intake line of hydraulic pressure, the input pipe of the hydraulic pressure can be passed through
It route volume flow source and clutch cylinder is supplied with hydraulic medium.But here, the intake line of hydraulic pressure indirectly with clutch cylinder
Connection, and the conversion pipeline that by switch unit and then the direct pipeline of hydraulic pressure has pressure transducer in other words is connected to
Between.Switch unit between volume flow source and the clutch cylinder of hydraulic pressure in this way, so that do not have the feelings of other pressure conversion
The connection connection by means of the first output end by switch unit of direct pipeline can be transferred under condition.Therefore, volume flow source is set
Put for producing corresponding (maximum) pressure and for providing volume flow correspondingly required in clutch cylinder.It is preferred that
Ground, first switching position is transferred to during the first stage from the description above.During this period, it preferably is off passing through pressure
Another hydraulic connecting of converter.
By means of switch unit can be transferred to by means of pressure transducer by the second output end of switch unit, borrow
Help convert the connection connection that pipeline carries out pressure conversion.Preferably, institute is transferred to during second stage from the description above
State the second switching position.Also can the multistage pressure transducer set by the relatively large volume flow with relatively small pressure (in proportion
Ground) it is converted into the smaller size smaller stream with larger pressure.Thus, pressure transducer provides need for second stage exactly
It is required that.In addition, volume flow source can be run under the pressure of relatively small (maximum), and its provide in addition relatively large volume flow for
Use.Herein, it is preferable that close the first output end of switch unit.From the second output end of switch unit, the first conversion
Pipeline is communicatively connected in input side with pressure transducer, i.e. with low-pressure side.Towards the clutch cylinder of hydraulic pressure, second conversion tube
Road is communicatively connected in outlet side with pressure transducer, i.e. with high-pressure side.
It is transferred to thus, it is possible to the hydraulic package by being proposed at this straight between volume flow source and the clutch cylinder of hydraulic pressure
Connect and be indirectly connected between volume flow source and the clutch cylinder of hydraulic pressure in succession.That is, in the case where being directly connected to, cylinder pressure
Power is roughly equivalent to source pressure (deducting line loss and part loss that may be present).This cylinder pressure must be provided with sufficient
It is enough in the first stage from the description above.In the case where being indirectly connected with, in the input pressure substantially phase of pressure transducer
When in source pressure (deducting line loss and part loss that may be present).Output pressure is for example corresponding on input piston
First pressure face and second pressure face on output end piston between the proportionate relationship of inverse proportion (deduct that may be present
Friction loss).Thus the volume flow reduced in the second conversion pipeline is produced.Thus, present cylinder pressure is roughly equivalent to press
The output pressure (deducting pipeline loss and part loss that may be present) being correspondingly converted of power converter.It is it is to be noted, that every
Individual illustrated pipeline herein can be made up of multiple parallel sections (section) pipeline respectively.In addition, also can be another in centre connection
Outer element, such as such as choke valve, filter shake device and/or other flow elements.
The off-load of clutch cylinder is carried out by the negative volume flow in Volume Source, and the Volume Source is suitably referred to as now
Volume falling portion (Volumensenke).This compared with the engaging process discussed above of pump for example by means of having opposite
On direction it is volume flow, rotate backward realization.The power opposite with the pressure of hydraulic pressure is for example by means of at least one pressing plate
On facings spring assembly, leaf spring and/or opposite spring effect in clutch cylinder on clutch cylinder.The power is preferably borrowed
Help piston rod will be in reverse in clutch cylinder direction of engagement orientation, pressure i.e. in opposite direction be applied to pressure transducer
Outlet side on.The pressure by means of inverted running the so reduced conversion of pressure transducer continue until switch unit.
Switch unit is retained in the second output end open position, is activation so as to convert pipeline.Switch unit is retained in the position
In until volume from pressure transducer flow back untill.Now, switch unit is so changed：First output end is opened and the second output
End is closed, so as to back take the residual volume from clutch cylinder in hydraulic medium reservoir on direct stroke to, preferably
Carried out by means of the pump in volume flow source.
Preferably, pump is so run so that it to clutch cylinder off-load in order to not need (such as by pump shaft) outside
, for example electric driving energy, and passively driven.Pump is worked as hydraulic motor by flowing mechanism.In order to modulate
The stalling characteristic wanted, pump can be by the driving energy of outside, such as pump shafts and by means of motor brake.
According to an Advantageous embodiments of hydraulic package, switch unit has two position three way directional control valve.
Here, two position three way directional control valve has switching piston and part discussed above, i.e. input, the first output end
With the second output end.Here, in the first position of switching piston, input is communicatively connected with the first output end, and second
Output end is closed.Here, in the second place of switching piston, input is communicatively connected with the second output end, and first is defeated
Go out end to close.In the embodiment that this is proposed, structure is extremely simple, because switch unit only have to include (at least) one
The individual two position three way directional control valve with the first output end and with the second output end, and only by making two position three way directional control valve
Switching piston movement with regard to can be transferred to only by direct pipeline or only by conversion pipeline connection connect.
According to another Advantageous embodiments of hydraulic package, switch unit has the first switching valve with the first output end
With the second switching valve with the second output end, wherein, the first switching valve and the second switching valve are respectively bi-bit bi-pass reversal valve.
Bi-bit bi-pass reversal valve has switching piston and the first sub- input discussed above and above institute respectively herein
The first output end illustrated the second sub- input and the second output end in other words.Here, in the first position of switching piston, build
The connection connection stood between sub- input and corresponding output end, also, in the second place of switching piston, in the connection
It is disconnected.In the embodiment that this is proposed, realization is particularly rapidly changed, wherein, switch unit from the first output end to the
Two output ends and the overlap coefficient from the second output end to the transfer characteristic of the first output end independent of corresponding switching piston.
This, it is possible to, two connections run or had begun to carry out an opening with opening, and another connection also opens or gone back
It is not fully closed.Thus it can reach the switching characteristic of optimization.
According to another Advantageous embodiments of hydraulic package, switch unit can be switched in a manner of Stress control, wherein, it is excellent
Selection of land, switch unit is with the pressure load for Stress control in the opposite direction by least one spring element pretension.
In a preferred embodiment, Stress control is applied to switching list by least one control piper being branched off
In member.Preferably, at least one control piper is branched off from institute's intake line, because always being deposited in intake line
For the required conclusive pressure of switching position.Here, switch unit is delivered to by least one control piper
On power it is proportional with corresponding loine pressure and therefore can be readily used for Stress control and control can be converted into.
In this Advantageous embodiments, using the change of pressure, preferably in the explanation more than from the first stage
The change for the pressure being transitioned into when in second stage, to control switch unit.In a previously given limit duty pressure feelings
Under condition, interrupt and being directly connected to and opening by converting being indirectly connected with for pipeline by direct pipeline.Here, limit duty pressure
It is roughly equivalent to the operating pressure of the greatest hope in volume flow source.It is particularly preferred that limit duty pressure is slightly lower than greatest hope
Operating pressure, wherein, the operating pressure of greatest hope is applied to the operation of pressure transducer.
For an alternate embodiments, switch unit is controlled to electric-type, wherein, use a pressure sensing arbitrarily arranged
Device or multiple pressure sensors are used for detectable limit duty pressure.Here, it is preferred that can electric-type, for example electromagnetically to manipulate switching single
Member.
In control piper from the case that intake line is branched off, in hydraulic package inverted running, that is, make clutch
Device cylinder separate when, due to the second output end at least start to open at and towards (first) conversion pipeline effect needed for pressure, from
And the second output end stays open.This pressure so keeps so high for a long time, until pressure transducer fully or
At least sufficiently enough back moved to for safe operation in starting position.Then just reach capacity duty pressure, in institute
State under limit duty pressure, the second output end close and the first output end open, so as to hydraulic medium by direct pipeline directly
And then more quickly toward being back to volume flow source or say toward being back to hydraulic medium reservoir.Herein, it is pointed out that volume flow
Source is in other words in this running status lower volume stream falling portion energy (complete) passively by the spring system or bullet of clutch cylinder
Spring element actuation, and/or the clutch to be manipulated can be by hydraulic mediums for example by means of the pump mechanical device liquid in volume flow source
Actuate to pressure.
In a preferred embodiment, switch unit is by means of at least one spring element pretension, so as to which switch unit exists
It is maintained in first position maintained above in the limit duty pressure reached in other words below the limit duty pressure reached
In two positions.Such as in the case of two position three way directional control valve, it is preferable that switching piston is maintained at first by spring element
In position, so as to the closing of the second output end and the first output end is opened.Only when reaching a predetermined limit duty pressure
When, overcome the power of spring element and switching piston is brought into the second place, so as to which the second output end is opened, the first output end
Close.Spring element is, for example, pressure type spring or pull-type spring.
According to another Advantageous embodiments of the hydraulic package with two bi-bit bi-pass reversal valves, the first of switch unit
Output end can be opened by the first spring element, and the second output end can be closed by means of second spring element.
In the Advantageous embodiments that this has the first switching valve and the second switching valve, as long as being also not up to limiting value pressure
Power, then each switching valve by means of a spring element pretension and then be maintained in open position in other words in the position of closing
In putting.Here, the rigidity of spring element can each closing property matches in other words with the opening characteristic of corresponding switching valve.Cause
This, the desired transfer characteristic of switch unit can be realized in the case of no other adjusting means.
According to another aspect of the invention, it is proposed that a kind of friction clutch with rotation axis, the friction clutch
For enabling driven shaft and customer to be connected with releasing, the friction clutch at least has with lower component：
- at least one friction group, the friction group have at least one pressing plate and at least one corresponding frictional disk,
Torque can be transmitted by the friction group in the state of being pressed；
- at least one hydraulic package according to embodiment from the description above, wherein, the clutch cylinder of the hydraulic pressure
It is provided for pressing at least one friction group.
Friction clutch is provided for, torque is delivered on customer in a manner of it can release from a driven shaft and
Vice versa.This is generally realized by least one friction group, and the friction group has being axially movable, generally and driven shaft
Without the pressing plate rotated against, the pressing plate can be pressed to at least one relative frictional disk.It is and corresponding due to pressing force
Coefficient of friction, which is multiplied, draws the frictional force on rubbing surface, and the frictional force is multiplied with the mean radius of rubbing surface to be drawn and can transmit
Torque.In order to reliably interrupt or fully reduce torque transmission, ventilation stroke is set, pressing plate will pass through the ventilation
Stroke at least separates spacing with corresponding frictional disk.For the major part for stroke of divulging information, on the clutch cylinder of hydraulic pressure
Required pressure is relatively small, because only have to overcome returning place force, such as leaf spring, friction facings spring or dish herein in engagement
The returning place force of shape spring.This corresponds to the first stage discussed above.For the engagement stroke in pressing or ventilation row
The remainder of journey, the stroke being related to is relatively small, but pressing force is significantly higher for the trip, so as to transmit foot
Enough big torques.The use in the favourable volume flow source of relative cost can be realized by the hydraulic package proposed at this, wherein, together
When equipment aspect cost it is small.Required volume flow source is preferably according to providing big volume flow in the case where pressure is relatively small
And set.Such volume flow source is not only cost advantages, and saves installing space in addition and consume relatively little of energy
Amount.Remaining add ons such as switch unit and pressure transducer (preferably) are also without additional energy source.Therefore, can be used
Such volume flow source, the volume flow source can be run under each state of activation according to setting.
It is particularly preferred that friction clutch is double clutch, in the double clutch, two friction groups are set, it is described
Friction group is separate, and either preferably alternateing ground can unclamp or connect in torque transmission.
According to another aspect of the invention, it is proposed that a kind of drivetrain, the drivetrain includes the driving list with driven shaft
Member and friction clutch from the description above, wherein, in order to transmit torque, driven shaft can by means of friction clutch with least
One customer connects in which can release.
Drivetrain is provided for, and releasably, can be connected and be transmitted by driver element, such as energy conversion with can turning off
Turn that machine, preferably explosive motor or motor are provided and exported by its driven shaft, at least one customer
Square.Generator of the exemplary customer at least one driving wheel of motor vehicle and/or for providing electric energy.In order to be directed to
Property and/or torque is transmitted with different gearratio by means of manual transmission or cut-out is transmitted, use is discussed above
Friction clutch is particularly advantageous, because high torque can be transmitted, and volume flow source only have to produce small pressure.
Conversely, it can also realize by the reception of the introduced inertia energy of such as driving wheel.Then at least one driving wheel is formed
Driver element, wherein, its inertia energy can be delivered to by generator by means of friction clutch by the drivetrain of relative set
It is upper to be used to recycle, be used for electricity storage braking energy.In addition, in a preferred embodiment, multiple driver elements are set,
The driver element in series or can be connected in parallel and mutually run decoupledly in other words by means of friction clutch, Huo Zheke
There is provided its torque with releasing respectively for utilizing.Such as hybrid drive is made up of motor and explosive motor,
But be also multicylinder engine, in the multicylinder engine, single cylinder (cylinder group) can be connected.
According to another aspect of the invention, it is proposed that a kind of motor vehicle, the motor vehicle has at least one driving wheel, described
Driving wheel can be driven by means of drivetrain from the description above.
Most of motor vehicles have pre-driver device, also, preferably driver element such as explosive motor or electricity at present
Motivation is arranged in before driver's cabin and arranged transverse to main travel direction.Exactly in the case where being arranged so as to, installing space is special
It is not small, therefore particularly advantageously, use the friction clutch of small physical dimension.Similarly, in two-wheeled vehicle using rubbing
Clutch is wiped, for the two-wheeled vehicle, the power significantly improved is needed in the case where installing space keeps constant.
The problem intensifies in the car according to the car grade of Europe classification.Made in small rank motor vehicle car
Equipment is not obviously reduced compared with compared with the car of cart rank.But available installation is empty in small rank motor vehicle
Between it is significantly smaller.Drivetrain discussed above has the friction clutch of especially small physical dimension.Meanwhile equipment aspect provides
Pressure it is relatively small, so as to using small physical dimension commanding apparatus.Therefore the system for generally realizing small physical dimension.
Car carries out vehicle classification according to such as size, price, weight, power, wherein, this definition is always according to market
Demand and in change in.Corresponded to according to the compact car of Europe classification and the vehicle of minicar rank on American market secondary tight
Gather car (subcompact car) rank, on English market corresponding to super mini car (supermini car) rank or
Say city car (City Car) rank.The example of minicar rank is the up of popular company！Or the Twingo of RJ Reynolds Tobacco Holdings ,Inc..It is small
The example of type car rank is the Mito of Alpha Luo Miou companies, the Polo of popular company, the Fiesta or thunder of Ford
The Clio of promise company.
According to another aspect of the invention, it is proposed that a kind of method for manipulating hydraulic operation formula friction clutch, described
Hydraulic operation formula friction clutch, which has, to be carried at least with the hydraulic package of lower component：
The volume flow source of-hydraulic pressure volume being used for required by providing；
The clutch cylinder of-hydraulic pressure, the clutch cylinder can be supplied by the intake line of the hydraulic pressure by volume flow source；
- pressure transducer, for less input pressure to be converted into higher output pressure；
- switch unit, between volume flow source and the clutch cylinder of hydraulic pressure be directly connected to in volume flow source and
By being changed between being indirectly connected with of pressure transducer between the clutch cylinder of hydraulic pressure.Methods described herein mainly have with
Lower step；
- ask for pressure in the clutch cylinder in hydraulic pressure, switch unit, pipeline and/or volume flow source；
- relatively more striked pressure and predetermined limit duty pressure；
- when striked pressure is less than predetermined limit duty pressure, it is transferred to by means of switch unit described straight
Connect in succession；
- when striked pressure is higher than predetermined limit duty pressure, by means of switch unit be transferred to it is described between
Connect in succession.
It is provided for that hydraulic operation formula friction clutch, institute can be manipulated using volume flow source in the method that this is proposed
Volume flow source is stated to be provided for producing relatively small pressure and for providing big volume flow.Therefore, on the one hand, pressure is set to turn
Change device and on the other hand switch unit is set.Pressure transducer turns to the large volume circulation with small pressure with larger pressure
The smaller size smaller stream of power.When manipulating friction clutch, occur two stages as mentioned above, i.e., on the one hand by logical
During being in fashion journey and another aspect is during pressing process.When by ventilation stroke, it is necessary to apply relatively large hydraulic pressure volume,
So as to across relatively large stroke.Here, it is not necessary to big pressing force.Therefore it provides the volume of large volume stream and small pressure
Stream source is suitable for the first stage.That is, for this stage, herein preferably used in volume flow source can be directly connected to, also
To say, volume flow source by a pipeline or multiple parallel pipelines in the case of not such element in addition directly
Connection, the element in addition reduce volume flow or increase pressure.Conversely, for second stage, for pressing will across row
Cheng Xianzhu is smaller, but required pressing force is significantly larger.Therefore, pressure transducer is connected between, by means of the pressure
Small pressure and large volume circulation can be turned to elevated pressures and smaller size smaller stream by power converter.In the second stage, volume flow
Source and then the clutch cylinder connection for indirectly, i.e. passing through pressure transducer and hydraulic pressure.
In the method, it is currently proposed, the replacing between being directly connected to and being indirectly connected with is carried out by means of switch unit,
The switch unit is transferred to according to limit duty pressure and is directly connected to or is indirectly connected with.Preferably, limit duty pressure is a tool
Body value, changed when by the occurrence between being directly connected to and being indirectly connected with.Alternatively, or additionally, limiting value
Pressure may include transitional region.For example, in the case where unclamping friction clutch, switched back into advance from high pressing force
To being directly connected to, more quickly separated therefore to realize.Here, limit duty pressure can be higher than can be as caused by volume flow source most
Big pressure.Such as pressing when, on the contrary, limit duty pressure preferably smaller than can as caused by volume flow source maximum pressure, so as to
It is used to manipulate pressure transducer with enough storage levels.Alternatively, or additionally, limit duty pressure can be corresponding preferable
Limit duty pressure nearby there is certain gap, to avoid prematurely (unnecessarily) toggling.
Preferably, methods described it is pure hydraulically by means of unique switching valve implement, the switching valve also can by from
The static pressure load of the system of hydraulic pressure correspondingly switches.Such as the switching piston of switching valve is maintained at by means of spring element
The static pressure for the control piper being branched off in one position and from the pipe section on volume flow source is loaded to opposite
Pressuring direction.If static pressure load is gone in corresponding another location more than the pretightning force of spring element, switching piston.
Alternatively, two separated switching valves are set, and the switching valve is alternately maintained in open position and closed position respectively.It is excellent
Selection of land, its switching piston are distinguished discretely by corresponding spring element pretension, and also by the pipeline area on volume flow source
The static pressure load for the control piper that section is branched off presses round about.Thus switch speed or switching characteristic are independent
In the overlap coefficient of switching piston .For an alternative embodiment, control to electric-type
Switch unit, wherein, using a pressure sensor arbitrarily arranged or multiple pressure sensors, for detection limits
Pressure.Here, it is preferred that can electric-type, for example electromagnetically manipulate switch unit.
In the case where control piper is branched off by intake line, in hydraulic package inverted running, i.e., in order that from
Clutch cylinder separate when, due to the second output end at least start to open at and towards (first) conversion pipeline effect needed for pressure,
To stay open the second output end.The pressure so keeps so high for a long time, until pressure transducer fully or
Person is at least sufficiently enough back moved in starting position for safe operation.Then just pressure is reached the limit values (from top)
Power, in the case of the limit duty pressure, the second output end close and the first output end open, so as to hydraulic medium pass through it is straight
Adapter road is directly and then more quickly toward being back to volume flow source or say toward being back to hydraulic medium reservoir.Here, will
Point out, this running status lower volume stream source in other words volume flow falling portion can (complete) passively by the spring of clutch cylinder
System or spring element actuate, and/or the clutch to be manipulated can be by hydraulic medium for example by means of the pump in volume flow source
Mechanical device hydraulically actuates.
According to another Advantageous embodiments, by means of implementing institute according to the hydraulic package of embodiment from the description above
State method.
It can not only implement but also can be stored in as computer program by means of computer program in the method that this is proposed
Computer program product Shangdi is implemented on (modular) calculator, and the calculator has at least one processor, necessity
When at least one memory cell, if necessary at least one working storage (as long as be related to switch unit with pressure correlation
Control).Here, at least one pressure sensor is arranged on a pipeline of hydraulic package, is preferably at least arranged on input pipe
Lu Shang.It is used to judge, i.e. for example using at least one striked and by means of computer programs process real-time pressure signal
For with limiting value pressure ratio compared with and export the corresponding control signal for switch unit.Preferably, calculator is integrated electricity
Road or microprocessor, computer program is stored in a manner of enforceable is integrated in institute by means of corresponding circuit structure in other words
State on integrated circuit or microprocessor.
Brief description of the drawings
Hereinafter, above institute is explained in detail with reference to accompanying drawing that is affiliated, showing preferred configuration under the technical background of correlation
The invention of explanation.The present invention is not limited by purely diagrammatical accompanying drawing in any way, wherein, it can thus be seen that the accompanying drawing is not
It is accurate in size and be not suitable for limit dimension scale relation.Accompanying drawing is shown：
Fig. 1：Hydraulic package with two position three way directional control valve；
Fig. 2：Hydraulic package with two switching valves；
Fig. 3：In a motor vehicle, have friction clutch drivetrain；With
Fig. 4：For manipulating hydraulic operation formula friction clutch, illustrative methods diagrams.
Embodiment
Figure 1 illustrates schematical hydraulic package 1, its have can by friction clutch 2 that clutch cylinder 5 manipulates,
With (first) switch unit 6, wherein, (first) switch unit 6 is configured to two position three way directional control valve 15 herein.Clutch cylinder 5
Including pressing piston 35, the pressing piston in friction clutch side around the manipulation bearing 34 that rotation axis 18 rotates by can incite somebody to action
Pressing plate 26 presses to corresponding frictional disk 27, therefore to be transmitted by means of the friction group 25 that can be rotated around rotation axis 18
Torque.Required pressing force is produced by volume flow source 3 (the volume flow source is supplied by hydraulic medium reservoir 46 herein) herein
It is raw, and directly through direct pipeline 12 or indirectly by the first conversion pipeline 13, pressure transducer 11 and second turn
Change pipeline 14 and supply clutch cylinder 5.(the first) switch unit 6 has an input 8, volume flow source 3 by the input by
Communicatively connected in intake line 4.Here, two position three way directional control valve 15 is shown under a state, in this condition, by means of
Direct induction element 36 opens the first output end 9 and closes the second output end 10.In the state of being not shown here, indirect guiding element
Part 37 closes the first output end 9 and opens the second output end 10.Here, direct induction element 36 and indirect induction element 37 are only
For simplifiedly showing the function of (first) switch unit 6 and in preferred configuration by switching piston and output end 9 and 10
Suitably-arranged realize.Here, the first output end 9 is communicatively connected with direct pipeline 12.Second output end 10 and the first conversion
Pipeline 13 communicatively connects.Here, (first) switch unit 6 is pre- tightly by means of the first spring force 39 of the first spring element 19
It is maintained in direct guide position.First pressure load direction 47, the first pressure load direction are shown in a reverse direction
It is applied to by the first control piper 38 being branched off from intake line 4 on (first) switch unit 6.Now, if defeated
Enter the pressure in pipeline 4 and be increased beyond a predetermined limiting value, then indirect induction element 37 is transferred in the position of connection.
Then, from intake line 4 to the pressure increase in pressure transducer 11, so as to produce enough pressing for friction clutch 2
Pressure.
Figure 2 illustrates hydraulic package 1 and similar configuration in Fig. 1, wherein, the second switch unit 7 is set here,
Second switch unit includes the first switching valve 16 and the second switching valve 17.Here, the first switching valve 16 includes directly guiding
The closing element 44 of element 36 and first, and the second switching valve 17 includes the indirect closing element 45 of induction element 37 and second.Second
Spring element 20 makes direct induction element 36 be maintained in the position of connection by means of second spring power 42.3rd spring element 21
Also the second closing element 45 is made to be maintained in the position of connection.Respectively in contrast, the He of second pressure load direction 48 is set
3rd pressure load direction 49, the second pressure load direction and the 3rd pressure load direction respectively by intake line 4 by
In the second control piper 40 being branched off, the 3rd control piper 41 supplies in other words.In shown switching position, input
End 8 is communicatively connected with the first output end 9, and the second output end 10 is closed.That is, the pressure in control piper 40 and 41 is born
Carry and be less than corresponding spring force 42 in other words 43.Here, spring force 42 and 43 need not be equal, so as to realize that such switching is special
Property, in the switching characteristic, such as (in short time) opens two output ends 9 and 10.
Schematically show drivetrain 28 in figure 3, it include driver element 29 (being shown in this as explosive motor),
Driven shaft 22, friction clutch 2 and the left driving wheel 23 and right driving wheel 24 that carry out torque transmission ground connection.Drivetrain 28 is herein
It is arranged in motor vehicle 30, wherein, driver element 29 is arranged in driver's cabin 31 with its engine axis 33 transverse to longitudinal axis 32
Front.
Figure 4 illustrates the diagram of the method for manipulating hydraulic operation formula friction clutch.Here, in order to more preferable geographical
Solution, methods described is described according to a kind of mark of the above-mentioned detailed description according to embodiment, such as described mark for example in Fig. 1 and
Shown in Fig. 2.Diagram is illustrated by the closing process of friction clutch 2 first.Here, volume flow source 3 is in operation and really
Predetermined positive volume flow under predetermined positive (low) pressure is protected, i.e., from volume flow source 3 towards clutch
The volume flow in the direction of cylinder 5.In the first switching position 50, the direct pipe be transferred between volume flow source 3 and clutch cylinder 5
Road.Thus, low pressure is acted on for system.Performed by means of corresponding measurement apparatus relative to predetermined limiting value
The pressure value of pressure compares 52.If measured pressure below limit duty pressure, keeps periods of low pressure 53, keeps tool
There is the first switching position 50 of direct pipeline.If measured pressure more than limit duty pressure, is transferred to high pressure phase 54,
In the high pressure phase, it is transferred between volume flow source 3 and clutch cylinder 5 by the indirect pipeline of pressure transducer 11.By
This, acts on high pressure for system.In addition, performing pressure value by means of measurement apparatus compares 52, wherein, according to measured
Pressure be switched in periods of low pressure 53 or high pressure phase 54.Then, such as by determining that closing presure detects a closed form
State 55 (clutch engagement), and volume flow source 3 is transferred in the state of the stopping of volume flow 56.Here, now, by means of pressure
Value, which compares 52, makes pressure keep constant, as long as friction clutch 2 will remain closed.
Now, in order to open friction clutch 2, volume flow source 3 is run using negative volume flow as volume flow falling portion.
Here, always further cut down pressure now, wherein, now, after less than limit duty pressure, in the second switching position 51
High pressure phase 54 be switched in the periods of low pressure 53 in the first switching position 50.As long as the second output end 10 is opened, then
High pressure phase 54 is present in intake line 4, so as to control switch unit 6,7 simultaneously by the pressure in intake line 4
And therefore the second output end 10 stays open.Only when pressure transducer 11 is located in (return) starting position, then
Pressure in one conversion pipeline 13 declines and then the pressure in intake line 4 also declines.Be achieved in periods of low pressure 53 and then
First output end 9 is opened and the second output end 10 is closed.
By the hydraulic package proposed at this, can for the whole hydraulic operation scope of friction clutch use into
This favourable low pressure volume stream source.
Reference numerals list
1 hydraulic package
2 friction clutches
3 volume flow sources
4 intake lines
5 clutch cylinders
6 first switch units
7 second switch units
8 inputs
9 first output ends
10 second output ends
11 pressure transducers
12 direct pipelines
13 first conversion pipelines
14 second conversion pipelines
15 two position three way directional control valves
16 first switching valves
17 second switching valves
18 rotation axis
19 first spring elements
20 second spring elements
21 the 3rd spring elements
22 driven shafts
23 left driving wheels
24 right driving wheels
25 friction groups
26 pressing plate
27 frictional disks
28 drivetrains
29 driver elements
30 motor vehicles
31 driver's cabins
32 longitudinal axis
33 engine axis
34 manipulate bearing
35 pressing pistons
36 direct induction elements
37 indirect induction elements
38 first control pipers
39 first spring forces
40 second control pipers
41 the 3rd control pipers
42 second spring power
43 the 3rd spring forces
44 first closing elements
45 second closing elements
46 hydraulic medium reservoirs
47 first pressure load directions
48 second pressure load directions
49 the 3rd pressure load directions
50 first switching positions
51 second switching positions
52 pressure values compare
53 periods of low pressure
54 high pressure phases
55 closure states
56 volume flows stop
Claims (10)
1. for the hydraulic package (1) of hydraulic operation formula friction clutch (2), the hydraulic package has at least following portion
Part：
The volume flow source (3) of-hydraulic pressure volume being used for required by providing；
The intake line (4) of-hydraulic pressure, the intake line linking of the hydraulic pressure are arrived on the volume flow source (3)；
The clutch cylinder (5) of-hydraulic pressure, the clutch cylinder of the hydraulic pressure can be by the intake line (4) of the hydraulic pressure by the body
Product stream source (3) supply,
Characterized in that, also include at least following part：
- switch unit (6,7), its with input (8), with the first output end (9) that can be closed and with can close
Two output ends (10), wherein, intake line of the switch unit (6,7) by the input (8) by means of the hydraulic pressure
(4) communicatively it is connected with the volume flow source (3)；
- pressure transducer (11), for less input pressure to be converted into higher output pressure；
The direct pipeline (12) of-hydraulic pressure, the described first defeated of the switch unit (6,7) is made by the direct pipeline of the hydraulic pressure
The clutch cylinder (5) for going out end (9) and the hydraulic pressure communicatively connects；
First conversion pipeline (13) of-hydraulic pressure, the institute of the switch unit (6,7) is made by the first conversion pipeline of the hydraulic pressure
The second output end (10) is stated communicatively to be connected in input side with the pressure transducer (11)；With
Second conversion pipeline (14) of-hydraulic pressure, the pressure transducer (11) is set to exist by the second conversion pipeline of the hydraulic pressure
Outlet side is communicatively connected with the clutch cylinder (5).
2. hydraulic package (1) according to claim 1, wherein, the switch unit (6) has two position three way directional control valve
(15)。
3. hydraulic package (1) according to claim 1, wherein, the switch unit (7) has with the described first output
First switching valve (16) of (9) and the second switching valve (17) with second output end (10) are held, wherein, described first cuts
It is respectively bi-bit bi-pass reversal valve to change valve (16) and second switching valve (17).
4. the hydraulic package (1) according to any one of the preceding claims, wherein, the switch unit (6,7) can be with pressure
The mode of power control switches, wherein it is preferred to, the switch unit (6,7) and the pressure load side for the Stress control
To (47,48,49) on the contrary by least one first spring element (19,20,21) pretension.
5. the hydraulic package (1) according to claim 3 and 4, wherein, first output end of the switch unit (7)
(9) can be opened by means of second spring element (20), also, second output end (10) can be by means of the 3rd spring element
(21) close.
6. the friction clutch (2) with rotation axis (18), the friction clutch is used to make a driven shaft (22) and consumption
Device (23,24) connects in which can release, and the friction clutch has at least with lower component：
- at least one friction group (25), the friction group have at least one pressing plate (26) and at least one corresponding friction
Disk (27), torque can be transmitted by the friction group in the state of being pressed；
- at least one hydraulic package (1) according to any one of the preceding claims, wherein, the clutch of the hydraulic pressure
Cylinder (5) is provided for pressing at least one friction group (25).
7. drivetrain (28), the drivetrain have：Driver element (29) with a driven shaft (22)；With according to claim
Friction clutch (2) described in 6, wherein, in order to transmit torque, the driven shaft (22) can be by means of the friction clutch
(2) connected with releasing with least one customer (23,24).
8. motor vehicle (30), the motor vehicle has at least one driving wheel (23,24), and the driving wheel can be by means of according to power
Profit requires drivetrain (28) driving described in 7.
9. the method for manipulating hydraulic operation formula friction clutch (2), the hydraulic operation formula friction clutch, which has, to be carried
At least with the hydraulic package (1) of lower component：
The volume flow source (3) of-hydraulic pressure volume being used for required by providing；
The clutch cylinder (5) of-hydraulic pressure, the clutch cylinder of the hydraulic pressure can be by the intake line (4) of hydraulic pressure by the volume flow
Source (3) supplies；
- pressure transducer (11), for less input pressure to be converted into higher output pressure；
- switch unit (6,7), for being directly connected between the volume flow source (3) and the clutch cylinder (5) of the hydraulic pressure
With between the volume flow source (3) and the clutch cylinder (5) of the hydraulic pressure by between the pressure transducer (11) in succession
Switched between connecing；
Methods described has at least following steps：
- ask for the clutch cylinder (5) in the hydraulic pressure, the switch unit (6,7), pipeline (4,12,13,14) and/or described
Pressure in volume flow source (3)；
- compare striked pressure and a predetermined limit duty pressure；
- when striked pressure is less than the predetermined limit duty pressure, it is transferred to by means of the switch unit (6,7)
Described is directly connected to；
- when striked pressure is higher than the predetermined limit duty pressure, it is transferred to by means of the switch unit (6,7)
Described is indirectly connected with.
10. the method according to claim 11, wherein, the hydraulic package (1), wherein, the hydraulic package (1) is set
For the hydraulic package according to any one of above claim 1 to 5.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015204673.7A DE102015204673B3 (en) | 2015-03-16 | 2015-03-16 | Hydraulic arrangement for a hydraulically actuated friction clutch and method for actuating a hydraulically actuated friction clutch |
| DE102015204673.7 | 2015-03-16 | ||
| PCT/DE2016/200132 WO2016146121A1 (en) | 2015-03-16 | 2016-03-10 | Hydraulic arrangement for a hydraulically actuated friction clutch, and method for actuating a hydraulically actuated friction clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107429760A true CN107429760A (en) | 2017-12-01 |
| CN107429760B CN107429760B (en) | 2020-06-09 |
Family
ID=55701650
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680015937.3A Active CN107429760B (en) | 2015-03-16 | 2016-03-10 | Hydraulic assembly for a hydraulically actuated friction clutch and method for actuating a hydraulically actuated friction clutch |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN107429760B (en) |
| DE (1) | DE102015204673B3 (en) |
| WO (1) | WO2016146121A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058319A (en) * | 2018-09-14 | 2018-12-21 | 中国船舶重工集团公司第七0三研究所 | Ladder hydraulic adjustment device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017117621B3 (en) | 2017-08-03 | 2019-01-10 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for operating a hydraulic system with a low-pressure pump and two pressure transformation accumulators |
| DE102020119162A1 (en) | 2020-07-21 | 2022-01-27 | Schaeffler Technologies AG & Co. KG | Hydraulic System and Procedures |
| DE102020119161B4 (en) | 2020-07-21 | 2022-03-17 | Schaeffler Technologies AG & Co. KG | Hydraulic system and method of operating a hydraulic system |
| DE102021104960B4 (en) | 2021-03-02 | 2024-03-21 | Schaeffler Technologies AG & Co. KG | Hydraulic system and method for operating a hydraulic system |
| DE102021120717B3 (en) | 2021-08-10 | 2023-01-05 | Schaeffler Technologies AG & Co. KG | Hydraulic arrangement, friction clutch and method for operating a friction clutch |
| DE102021120716B4 (en) | 2021-08-10 | 2024-08-29 | Schaeffler Technologies AG & Co. KG | Hydraulic arrangement, friction clutch and method for operating a friction clutch |
| DE102022209440A1 (en) | 2022-09-09 | 2024-03-14 | Zf Friedrichshafen Ag | Electric axle drive for a motor vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107429760B (en) | 2020-06-09 |
| WO2016146121A1 (en) | 2016-09-22 |
| DE102015204673B3 (en) | 2016-07-21 |
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