CN106460964A - Method for reducing drag torque of friction clutch on demand - Google Patents
Method for reducing drag torque of friction clutch on demand Download PDFInfo
- Publication number
- CN106460964A CN106460964A CN201580028868.5A CN201580028868A CN106460964A CN 106460964 A CN106460964 A CN 106460964A CN 201580028868 A CN201580028868 A CN 201580028868A CN 106460964 A CN106460964 A CN 106460964A
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- friction clutch
- clutch
- trailing moment
- gearratio
- state
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008859 change Effects 0.000 claims abstract description 17
- 238000005299 abrasion Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 27
- 238000003825 pressing Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process 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
-
- 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
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10406—Clutch position
- F16D2500/10412—Transmission line of a vehicle
-
- 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
- F16D2500/104—Clutch
- F16D2500/10443—Clutch type
- F16D2500/1045—Friction clutch
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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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3026—Stroke
-
- 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
- F16D2500/304—Signal inputs from the clutch
- F16D2500/30403—Number of clutch actuations
-
- 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
- F16D2500/304—Signal inputs from the clutch
- F16D2500/30404—Clutch 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
- F16D2500/30—Signal inputs
- F16D2500/304—Signal inputs from the clutch
- F16D2500/3041—Signal inputs from the clutch from the input shaft
- F16D2500/30412—Torque of the input shaft
-
- 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
- F16D2500/304—Signal inputs from the clutch
- F16D2500/3042—Signal inputs from the clutch from the output shaft
- F16D2500/30421—Torque of the output shaft
-
- 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
- F16D2500/305—Signal inputs from the clutch cooling
- F16D2500/3055—Cooling oil properties
- F16D2500/3056—Cooling 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
- F16D2500/502—Relating the clutch
- F16D2500/5023—Determination of the clutch wear
-
- 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
- F16D2500/50287—Torque control
- F16D2500/5029—Reducing drag torque
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
A method for on-demand reduction of the drag torque of a friction clutch of a motor vehicle during a gear ratio change, the friction clutch being automatically manoeuvrable between an open position and a closed position, the friction clutch being in particular wet, wherein a drag torque status is first determined (304) and subsequently it is determined whether the requested gear ratio change can be performed without reducing the drag torque or whether the drag torque needs to be reduced, depending on a gear ratio change requirement (302).
Description
Technical field
The present invention relates to a kind of for changing in gearratio during reduce on demand motor vehicles friction clutch towing
The method of moment, described friction clutch automatically can manipulate between open position and closing position, described friction clutch
Especially wet type.
Background technology
Known a kind of side of the wet friction clutch for controlling motor vehicles from DE 10 2,013 205 107 A1
Method, described friction clutch can manipulate between open position and closing position, and friction clutch has counter, with respect to anti-
Pressing plate and the clutch disk that can clamp between counter and pressing plate that pressing plate is axially movable, are wherein based on clutch characteristics bent
Line traffic control friction clutch, wherein determines clutch trailing moment characteristic curve and by itself and clutch characteristics curve combining,
To obtain the clutch characteristics curve revised.
Content of the invention
The present invention is based on following purposes:Improve the method being initially mentioned, especially should be able to realize fully subtracting of trailing moment
Little.Especially, the quick reduction of trailing moment should be able to be realized.Especially, should it is unnecessary to reduce trailing moment and convey on one's own initiative
Energy.Especially, should avoid disconnecting friction clutch as far as possible.Especially, shift time and gear shifting force should be reduced when gearratio changes,
Or shift time and gear shifting force independently keep constant with temperature impact.Especially, driver comfort should be improved.
Described purpose by a kind of for changing in gearratio during reduce on demand friction clutch trailing moment side
Method is realized, and wherein said friction clutch automatically can manipulate between open position and closing position, described friction clutch
Especially wet type, wherein changes according to gearratio and requires, it is first determined trailing moment state, and it is later determined that, can be
Execute required gearratio change in the case of not reducing trailing moment, or need to reduce trailing moment.
Friction clutch can be a part for friction clutch device.Friction clutch can form single clutch.Rub
Wipe clutch and can form double clutch with another friction clutch.Friction clutch can be single plate clutch.Rub from
Clutch can be multiplate clutch.Friction clutch can have counter, the pressing plate being axially movable with respect to counter and
Can clamp between counter and pressing plate and the clutch disk of power is transmitted with frictional fit.Friction clutch can have input
Part and output par, c.Counter and pressing plate can belong to importation.Clutch disk can belong to output par, c.
The friction clutch of wet type can be following friction clutches, and described friction clutch is loaded by liquid flow.Liquid
Stream can be used particularly for cooling down friction clutch.Liquid can be oil.Liquid can be transmission oil.Trailing moment can rub
Occur in the case of wiping clutch is inc.Trailing moment can be caused by the power transmission depending on liquid.Trailing moment
Can be related to the specific characteristic of liquid, viscosity and/or temperature.Trailing moment can be with the frame mode phase of cooling circuit
Close, especially related to the position of cooling oil pump and version.Trailing moment can be with clutch disk away from counter and/or pressing plate
Distance related.
Friction clutch can be used in the PWTN be arranged on motor vehicles.PWTN can have internal combustion
Machine.PWTN can have speed changer.Speed changer can be manual transmission.Speed changer can manually and/or from
Shift gears dynamicly.Friction clutch can be arranged between internal combustion engine and speed changer in PWTN.Friction clutch defeated
Entering part can be can drive connection with the output shaft of internal combustion engine.The output par, c of friction clutch can be and speed changer
Input shaft can drive connection.Term " importation " and " output par, c " and the power flow directional correlation by internal combustion engine.
Friction clutch can transmit according to manipulating the power starting to realize increasing from the actuated position being fully disconnected, until
Of completely closed actuated position, in the described actuated position being fully disconnected, between importation and output par, c substantially
Do not carry out power transmission, in described of completely closed actuated position, be basically carried out between importation and output par, c
Complete power transmission, is carried out to the power transmission frictional fit wherein between importation and output par, c.On the contrary, energy
Enough power transmission being started from of completely closed actuated position according to manipulation to realize reducing, until the actuated position being fully disconnected,
In described of completely closed actuated position, it is basically carried out complete power transmission between importation and output par, c,
In the described actuated position being fully disconnected, substantially do not carry out power transmission between importation and output par, c.
Friction clutch device can have performs device.Friction clutch can be by mean of performs device and can manipulate
's.Performs device can be hydrostatic performs device.Performs device can be used in partly hydraulically controlling friction clutch.Execution
Device can have hydraulic line.Performs device can have slave cylinder.Performs device can have active cylinder.Active cylinder can
For loading friction clutch.Hydraulic line can be used in the power transmission between active cylinder and slave cylinder.Performs device can
There is motor driver.Driver can be used in loading slave cylinder.Performs device can have transmission mechanism.
Friction clutch device can have control device.Control device can be local controls.Control device energy
It is enough higher level's control device.Control device can be used in controlling or regulates and controls friction clutch device, friction clutch, performs device
And/or the motor driver of performs device.The method according to the invention can be executed by means of control device.Control device can
There is controller for electric consumption.Control device can have storage device.Storage device can have non-volatile electronic memory,
The information that described electronic memory is stored to be electrically eliminated or can be capped.Control device can have electrically erasable can
Program read-only memory (EEPROM).Actuation means can have computing device.
Friction clutch device can have the sensor of the adjustment position for determining friction clutch device.Described biography
Sensor can be position sensor.Described sensor can be used in determining the adjustment position of friction clutch.Described sensor energy
It is enough in the adjustment position determining performs device.Friction clutch device can have the sensing of the moment for determining transmission
Device.Described sensor can be torque sensor.Friction clutch device can have the slippage for determining friction clutch
Sensor.Slippage can be the speed discrepancy between the importation of friction clutch and output par, c.Friction clutch device
Can have the sensor for determining liquid flow.Friction clutch device can have for the determination especially temperature of liquid
Sensor.
Can consider determined by, for example measured trailing moment, clutch temp, coolant temperature, from one
Individual run pause start the energy input in friction clutch, from upper one run pause start clutch control time
Under conditions of the manipulation skew being caused by abrasion of number and/or simulation, determine trailing moment state.
In order to determine trailing moment state, based on clutch that is measuring in the new state of friction clutch or calculating
Device characteristic curve, can determine touch points.Can store in the storage device or clutch characteristics curve can be stored.Clutch is special
Linearity curve relatively can illustrate by rubbing with friction clutch device, friction clutch or performs device adjustment position
The moment of clutch transmission.Clutch characteristics curve can illustrate in the graph, in described chart, draws friction in x-axis
Clutch apparatus, friction clutch or performs device adjustment position, and draw the moment of transmission on the y axis.Touching
Point can describe friction clutch device, friction clutch and/or performs device adjustment position, in described adjustment position
In from the manipulation that starts of actuated position disconnecting, friction clutch starts to transmit moment towards the actuated position of closure.Touch
Touch and a little can describe friction clutch device, friction clutch and/or performs device adjustment position, in described adjustment position
Put the predetermined moment of middle friction clutch transmission.Predetermined moment can be about for example 2 to 3Nm.Herein, term " touches
Touch a little " can not only represent touch points itself but also also illustrate that friction clutch device, friction clutch and/or execution
The adjustment position related to touch points of device.Friction clutch device, friction clutch and/or performs device with touch
Touch a related adjustment position can store in the storage device.
Can determine the stroke between cut-off point and touch points, and stroke value can be stored.Cut-off point can be following
Point, at described point, performs device just starts transmission power or pressure when along disconnection directional control friction clutch.Stroke value
Can be stored in control device.Stroke value can be at least approximate unrelated with abrasion.The value of cut-off point can consider friction from
It is adjusted under conditions of clutch state of wear.In order to adjust the value of cut-off point, can be by stroke value from the touching being related to abrasion
Point value deducts.Determining whether to execute required gearratio change in the case of not reducing trailing moment, or need to subtract
During little trailing moment, it can be considered that required gearratio.Trailing moment state can or be defined as high, or is defined as
Low.Trailing moment state can divide two hierarchically to determine.In order to trailing moment state is defined as high or low, Neng Goukao
Consider default boundary value.High trailing moment state can be associated with high necessary gear shifting force.Low trailing moment state energy
Enough it is associated with low necessary gear shifting force.
When trailing moment state is defined as low and/or when required gearratio is big gear, required transmission
Can directly initiate than change.Big gear can be associated with high necessary gear shifting force.Little gear can be with low necessity
Gear shifting force is associated.When trailing moment state is defined as high and/or requirement gearratio and is little gear, can break first
Open friction clutch, and the gearratio change required by subsequent start-up.Friction clutch can disconnect up to its open position.
With regard to new state or consider state of wear in the case of adjust open position value.The open position of clutch system can lead to
Cross and be in executing agency's (volume compensation guaranteeing in storage container) of ventilation position, by clutch or performs device
Mechanical property (such as backstop or sticking department) and/or limited by (if necessary also have adaptation) alliance of study.
By " can " especially represent the present invention optional feature.Therefore, embodiments of the invention are respectively obtained, described
Embodiment has a corresponding feature or multiple features accordingly.
The method according to the invention is capable of sufficiently reducing trailing moment.It is capable of rapidly reducing drag
Square.Effective energy conveying for reducing trailing moment is dispensable.Disconnect friction clutch only to carry out when needed.?
The shift time of transmission ratio reduces.Driver comfort improves.
Brief description
Below with reference to the accompanying drawings embodiments of the invention are described in detail.Other feature and advantage are drawn from this description.Described
The specific features of embodiment can be the universals of the present invention.The feature with other feature associations of described embodiment also can
Independent feature for the present invention.
Schematically and be exemplarily illustrated:
Fig. 1 illustrates the chart with the clutch characteristics curve in the new state of friction clutch,
Fig. 2 illustrates the chart with the clutch characteristics curve in the state of wear of friction clutch, and
Fig. 3 illustrates the chart of the trailing moment for reducing friction clutch on demand.
Specific embodiment
Fig. 1 illustrates the chart 100 with the clutch characteristics curve 102 in the new state of friction clutch.Rub from
Clutch has counter, the pressing plate being axially movable with respect to counter and can be for frictional fit between counter and pressing plate
Transmission power and the clutch disk that clamps.Friction clutch has importation and output par, c.Counter and pressing plate belong to
Importation.Clutch disk belongs to output par, c.Friction clutch automatically can be grasped by means of performs device and controller for electric consumption
Vertical.Friction clutch is used for being arranged between internal combustion engine and manual transmission in the PWTN of motor vehicles, described changes
Shift transmission has gearratio.Friction clutch is the wet clutch running in oil.
In chart 100, draw control run s and clutch torque M related to control run s.In axle intersection point, behaviour
Stringer journey s=0, and friction clutch is fully disconnected.In described position, one side counter and pressing plate and on the other hand
Clutch disk is spaced apart from each other and is joined so that directly not rubbing between the importation of friction clutch and output par, c
The power transmission closed.Certainly, due to oil present in friction clutch, in the friction clutch being fully disconnected, also due to
Liquid and little trailing moment occurs.Trailing moment is for example temperature dependent with oily viscosity.
From the beginning of the completely open position 104 of friction clutch, under friction clutch passes through with the increase of control run s
Mode of stating manipulates towards closing direction:Pressing plate moves towards counter.After control run 106, at touch points 108
Start the power transmission of the direct frictional fit between the importation of friction clutch and output par, c.Trailing moment also with
Clutch disk is related to the distance of counter and pressing plate.Therefore, directly do not rub between importation and output par, c
In the case of the power transmission of cooperation, increase with control run s, through control run 106, trailing moment is reaching touch points
Had built up before 108.
When friction clutch starts the edge directional control contrary with closing direction from completely open position 104, up to
To ventilation position 110, in described ventilation position, the hydraulic line of performs device is connected with compensating container, so as to realizing
Pressure/volume compensation.
Fig. 2 illustrates the chart 200 with the clutch characteristics curve 202 in the state of wear of friction clutch.In mill
In damage state, due to abrasion it is necessary to through bigger control run s until reach touch points 204.Complete from friction clutch
Open position 206 starts, and due to friction, first passes around following strokes up to cut-off point 208, on described stroke, although manipulating
Stroke s increases, and trailing moment does not improve.The trailing moment reducing and causing due to the spacing of clutch disk and counter and pressing plate
Improve and occur first in control run section 210, described control run section 210 is from the beginning of exceeding cut-off point 208.From exceeding touching
Point 204, starts to carry out the power transmission of direct frictional fit between the importation of friction clutch and output par, c.
In state of wear, the length of control run section 210 corresponds roughly to the length according to the control run 106 in the new state of Fig. 1
Degree.In addition, remaining is specifically referring to Fig. 1 and associated description.
Fig. 3 illustrates the chart 300 of the trailing moment for reducing friction clutch on demand.The performs device of friction clutch
Controlled by means of control device.Carry out in control device by the flow process shown in chart 300.
Determine under conditions of considering the requirement 302 of transmission ratio in the transmission and trailing moment state 304:Can
Execute required gearratio change in the case of not reducing trailing moment, or need to reduce trailing moment.
When the gearratio that trailing moment state 304 is low and required is big gear, within step 306 directly
Start required gearratio change.When the gearratio that trailing moment state 304 is high and/or required is little gear
When, disconnect friction clutch, and the gearratio change required by subsequent start-up first in step 308.
Subsequently, according to trailing moment state 304, or directly execution gearratio change in the step 310, or exist first
Move towards touch points in step 312 and subsequently execution gearratio change.
Reference numerals list:
100 charts
Clutch characteristics curve in 102 new states
104 completely open positions
106 control runs
108 touch points
110 ventilation positions
200 charts
Clutch characteristics curve in 202 state of wear
204 touch points
206 completely open positions
208 cut-off points
210 control run sections
300 charts
302 gearratio changes require
304 trailing moment states
306 steps
308 steps
310 steps
312 steps
Claims (10)
1. a kind of for changing in gearratio during reduce on demand motor vehicles the trailing moment of friction clutch method, its
Described in friction clutch automatically can manipulate between open position and closing position, described friction clutch is especially wet
Formula,
It is characterized in that,
(302) are required according to gearratio change, it is first determined trailing moment state (304), and it is later determined that:Can not subtract
Execute required described gearratio change in the case of little trailing moment, or need to reduce trailing moment.
2. method according to claim 1,
It is characterized in that,
Consider measured trailing moment, clutch temp, coolant temperature, from an operation pause play described rub from
Energy input in clutch, the number of times of clutch control and/or the manipulation being caused by abrasion of simulation from upper runs and pauses
Under conditions of skew, determine described trailing moment state (304).
3. according at least one described method in the claims,
It is characterized in that,
In order to determine trailing moment state (304), based on measuring in the new state of described friction clutch or calculate
Clutch characteristics curve (102) determine touch points (108).
4. method according to claim 3,
It is characterized in that,
Determine the stroke (106) between cut-off point (104) and described touch points (108), and store stroke value.
5. method according to claim 4,
It is characterized in that,
Under conditions of the state of wear considering described friction clutch, adjust the value of described cut-off point (208).
6. according at least one described method in claim 4 to 5,
It is characterized in that,
In order to adjust the value of described cut-off point (208), from the touching point value (204) being related to wear and tear, deduct described stroke value
(106,210).
7. according at least one described method in the claims,
It is characterized in that,
Determining whether to execute required gearratio change in the case of not reducing trailing moment or needing to reduce towing
It is considered to required gearratio during moment.
8. according at least one described method in the claims,
It is characterized in that,
Described trailing moment state (304) is defined as high or low.
9. according at least one described method in claim 7 to 8,
It is characterized in that,
When described trailing moment state (304) being defined as low and/or required gearratio being big gear, directly open
Dynamic required gearratio change.
10. according at least one described method in claim 7 to 9,
It is characterized in that,
When described trailing moment state (304) being defined as high and/or required gearratio being little gear, disconnected first
Open described friction clutch, and the gearratio change required by subsequent start-up.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014210395 | 2014-06-03 | ||
DE102014210395.9 | 2014-06-03 | ||
PCT/DE2015/200314 WO2015185050A1 (en) | 2014-06-03 | 2015-05-18 | Method for reducing, if required, a drag torque of a friction clutch |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106460964A true CN106460964A (en) | 2017-02-22 |
CN106460964B CN106460964B (en) | 2018-12-14 |
Family
ID=53546480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201580028868.5A Active CN106460964B (en) | 2014-06-03 | 2015-05-18 | Method for reducing drag torque of friction clutch on demand |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR102472609B1 (en) |
CN (1) | CN106460964B (en) |
DE (1) | DE112015002627A5 (en) |
WO (1) | WO2015185050A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114254440A (en) * | 2021-12-29 | 2022-03-29 | 武汉科技大学 | Method for optimizing groove-shaped line on surface of friction plate of wet clutch |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112380673B (en) * | 2020-10-22 | 2024-07-09 | 广州汽车集团股份有限公司 | Transmission efficiency optimization method and device for speed changer |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004035262A1 (en) * | 2004-07-21 | 2006-02-16 | Zf Friedrichshafen Ag | Automatic transmission for controlling speed ratios between input shaft and output shaft of clutch of motor vehicle has transmission mechanism mounted on hollow shaft for air regulation to get absolute figure of number of revolutions |
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2015
- 2015-05-18 CN CN201580028868.5A patent/CN106460964B/en active Active
- 2015-05-18 WO PCT/DE2015/200314 patent/WO2015185050A1/en active Application Filing
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DE102004035262A1 (en) * | 2004-07-21 | 2006-02-16 | Zf Friedrichshafen Ag | Automatic transmission for controlling speed ratios between input shaft and output shaft of clutch of motor vehicle has transmission mechanism mounted on hollow shaft for air regulation to get absolute figure of number of revolutions |
DE102007015882A1 (en) * | 2006-04-29 | 2007-10-31 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Motor vehicle`s gear changing method, involves releasing driving movement after oil-cooled clutch is completely opened, and reducing flow of cooling oil of twin clutch system by operating stop valve to reduce drag torque of clutch |
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CN114254440A (en) * | 2021-12-29 | 2022-03-29 | 武汉科技大学 | Method for optimizing groove-shaped line on surface of friction plate of wet clutch |
CN114254440B (en) * | 2021-12-29 | 2024-04-09 | 武汉科技大学 | Optimization method for groove-shaped line of oil groove on surface of friction plate of wet clutch |
Also Published As
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KR20170016343A (en) | 2017-02-13 |
KR102472609B1 (en) | 2022-12-01 |
CN106460964B (en) | 2018-12-14 |
WO2015185050A1 (en) | 2015-12-10 |
DE112015002627A5 (en) | 2017-03-09 |
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