CN101270788B - Method and apparatus for monitoring thermal load of vehicle clutch - Google Patents

Method and apparatus for monitoring thermal load of vehicle clutch Download PDF

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Publication number
CN101270788B
CN101270788B CN2008100865542A CN200810086554A CN101270788B CN 101270788 B CN101270788 B CN 101270788B CN 2008100865542 A CN2008100865542 A CN 2008100865542A CN 200810086554 A CN200810086554 A CN 200810086554A CN 101270788 B CN101270788 B CN 101270788B
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CN
China
Prior art keywords
clutch
friction
threshold value
friction energy
value
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
Application number
CN2008100865542A
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Chinese (zh)
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CN101270788A (en
Inventor
T·卢克曼
T·布兰德斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
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Volkswagen AG
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Publication date
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Publication of CN101270788A publication Critical patent/CN101270788A/en
Application granted granted Critical
Publication of CN101270788B publication Critical patent/CN101270788B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F16D2500/30405—Estimated 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
    • F16D2500/30406—Clutch slip
    • 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
    • F16D2500/306—Signal inputs from the engine
    • F16D2500/3065—Torque of the engine
    • 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
    • F16D2500/306—Signal inputs from the engine
    • F16D2500/3067—Speed of the engine
    • 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
    • F16D2500/3081—Signal inputs from the transmission from the input shaft
    • F16D2500/30816—Speed 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
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/502—Relating the clutch
    • F16D2500/50296—Limit 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
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402—Actuator parameters
    • F16D2500/7041—Position
    • 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
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70422—Clutch parameters
    • F16D2500/70424—Outputting a clutch engaged-disengaged signal
    • 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
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/71—Actions
    • F16D2500/7105—Inhibit control automatically

Abstract

The invention discloses a method for monitoring a thermal load of a clutch a car, specifically for avoiding a thermal shock of the clutch, preferably a double clutch of double clutch transmission, wherein comprising calculating and/or determining a thermal load of the clutch. A controller is provided for controlling the clutch. Therefore, the shortage is overcame to confirm and/or calculate the speed and/or the torque of an engine and/or the rotation speed of a transmission input shaft, and thereby determining the friction power of the clutch; the friction power is integrated over a certain time interval. When the integrated friction power is currently matched and reaches the determined frictional energy threshold value, that is, during danger of a thermal overloading of the clutch, the clutch is at least partially disconnected.

Description

The method and apparatus that is used for monitoring thermal load of vehicle clutch
Technical field
The present invention relates to a kind of method that is used for monitoring thermal load of vehicle clutch, in particular for avoiding the thermal shock of clutch, the double clutch that for example is used for dual-clutch transmission wherein calculates and/or the heat load of definite clutch, has the controller that is used for solenoidoperated cluthes.The invention still further relates to the device that is used for monitoring thermal load of vehicle clutch in addition, in particular for avoiding the thermal shock of clutch, the double clutch that for example is used for dual-clutch transmission, wherein can calculate and/or the heat load of definite clutch, has the controller that is used for solenoidoperated cluthes, according to the method described above operation.
Background technique
Known in the prior art diverse ways and device are used to monitor clutch, are the heat load of automobile clutch.The double clutch of for example known automotive transmission, especially dual-clutch transmission is correspondingly controlled (DE 10218186A1), wherein at first by thermosensor determine each clutch, the heat load of the clutch that especially in starting process, loads.Then during the starting process when surpassing the heat load of this clutch, also control second clutch like this, make this clutch additionally, closed at least in part, be used to bear torque, first clutch is partly disconnected.Especially determine the heat load rate at each clutch friction face place by means of temperature transducer at this.
Known method and device in addition, for example (DE 10350936A1) realizes identification in advance for the driver when the clutch thermal overload.Especially here determine actual clutch temp by means of temperature transducer, wherein also determine heat transmission and/or the transmission of heat relevant by friction energy with the cooling effect that on clutch plate, exists with rotating speed by means of the temperature model that is fit to.Under the thermal overload situation, i.e. then sound ground, vision ground and also mechanically warn the driver when surpassing given limiting value, but essential driver itself operates, and is used to prevent excess load.
But method known in the prior art or device can't constitute best.On the one hand present known method and apparatus need increase regulate expenditure needs sensor power that increase and highstrung in other words, for example uses thermoelement.The temperature model that here uses also is not best on the other hand because in always can only calculating or determine mostly around the clutch environment in sometime true temperature and trace back to correspondingly relevant therewith process based on this.Therefore " temperature model " that uses at present can't enough accurately not be to constitute best in other words.
Summary of the invention
Therefore the objective of the invention is, constitute like this and improve method known in the prior art and device known in the prior art, make the monitoring that improves the clutch heat load or determine, especially avoid possible thermal shock for clutch.
The technological scheme that realizes purpose of the present invention is a kind of monitoring thermal load of vehicle clutch that is used for, promptly be used to avoid the method for the thermal shock of clutch, wherein calculate and/or the heat load of definite clutch, with be provided with the controller that is used for solenoidoperated cluthes, wherein determine and/or rotating speed and/or the torque of motor and/or the rotating speed of transmission input shaft of calculation engine, determine the friction horsepower of clutch thus, with friction horsepower a definite time interval upper integral, it is characterized in that, the said method step is implemented each clutch in two clutches of the double clutch of a dual clutch transmission, the friction horsepower of the integration of each clutch is mated currently, promptly in certain time interval, always recomputate the friction horsepower of integration, i.e. friction energy of Jia Ruing, promptly determine actual effectively friction horsepower integral value by the part numerical value of in certain time interval, determining respectively, promptly later the part numerical value of a new integration being added in certain time interval for each effective friction horsepower integral value is on the old friction horsepower integral value and simultaneously will known the earliest in time part numerical value to deduct from the friction horsepower integral value or get rid of the earliest partial integration simply at this moment, redefine actual effectively friction horsepower integral value thus, promptly wherein when surpassing certain friction energy threshold value, open corresponding clutch and the clutch that closed pair is answered when being lower than certain friction energy threshold value, wherein by the corresponding value that switching element manually is identified for corresponding friction energy threshold value is set at the friction energy that adds on the regular hour interval.
The technological scheme of existing purpose of the present invention is a kind of monitoring thermal load of vehicle clutch that is used for, promptly be used to avoid the device of the thermal shock of clutch, wherein can calculate and/or the heat load of definite clutch, be provided with the controller that is used for solenoidoperated cluthes, this device is according to method operation of the present invention, it is characterized in that, realize that one is used for determining that circuit and this circuit of friction energy have comparing element, open corresponding clutch and the clutch that closed pair is answered when being lower than certain friction energy threshold value when surpassing certain friction energy threshold value thus, wherein by the corresponding value that switching element manually is identified for corresponding friction energy threshold value is set.
Description of drawings
Describe the preferred embodiment of the invention in detail by means of accompanying drawing below.In the accompanying drawing
Fig. 1 illustrates according to of the present invention with schematic representation and is used for determining that friction horsepower is used to determine join the procedure of the energy of clutch in other words,
It is poor that Fig. 2 illustrates monitoring clutch driving plate temperature inside with schematic representation.
Embodiment
Fig. 1 and 2 at first illustrates a kind of method of heat load of the clutch that does not specifically illustrate that is used to monitor the automobile that does not specifically illustrate here.
Fig. 1 and 2 especially illustrates the corresponding circuitry processes of the device of operation according to the method.These methods are particularly useful for avoiding the clutch thermal shock, and for example they realize the double clutch of dual-clutch transmission.In the heat load of this calculating and/or definite clutch, wherein have a controller that does not specifically illustrate equally here, be used for control and want controlled clutch, be used for when heat load surpasses a threshold value cut-off clutch in time.
Now avoid above-mentioned defective thus, with reference to Fig. 1, determine and/or the rotating speed of the torque of the rotating speed of calculation engine and/or motor and/or transmission input shaft (this point can be for example by correspondingly being arranged on the sensor on each and realizing) by means of controller, determine the friction horsepower of clutch thus, a definite time interval upper integral, the friction horsepower of integration is mated currently and when reaching a definite friction energy threshold value friction horsepower, also cut-off clutch at least in part when thermal shock when promptly having clutch thermal overload hidden danger.
Here Fig. 1 at first illustrates clutch K1 and the K2 that friction horsepower joins the double clutch of automobile with schematic representation.For example per 10 milliseconds are calculated in controller.Here the circuit of Shi Xianing has corresponding difference and comparing element.Realize monitoring enduringly or definite friction energy that adds at the model shown in Fig. 1.Principle is for self-protection cut-off clutch K1 and K2, to prevent the clutch thermal shock thus and do not damage clutch when surpassing spendable limiting value.It is contemplated that also manually given corresponding numerical value is schematically realized by the switch of independent expression as right part in Fig. 1.
As shown in Figure 1, integration is transported to the friction horsepower of clutch K1 and K2, promptly always recomputates the friction energy of fixed adding after determining the time lag.Determine each actual effectively friction horsepower integral value by each part numerical value of determining later in the time lag of determining for this reason.This means, later add to the part numerical value of a new integration on " old " friction horsepower integral value and simultaneously will known the earliest in time part numerical value from the friction horsepower integral value, deduct or get rid of the earliest partial integration simply in a definite time lag (for example 10ms) for each effective friction horsepower integral value, redefine thus or actual definite actual effectively friction horsepower integral value, the i.e. friction energy that on a definite time interval, adds.This point left one side of something in Fig. 1 illustrates, there the integration by " integrating unit " expression always the time by determining, promptly for example per 10 milliseconds (10ms) calculate by controller and always get rid of the earliest partial integration.The result is, always obtains the friction horsepower integral value of an actual match, and it joins friction energy among each clutch K1 and the K2 corresponding to (on each time lag).If numerical value is positioned at more than the corresponding friction energy threshold value, here by " activation threshold K1 " or " activation threshold K2 " expression, then correspondingly cut-off clutch K1 or K2.If this numerical value is positioned at each below the friction energy threshold value, " the deexcitation threshold k 1 " shown in here being positioned at or below " deexcitation threshold k 2 " then can correspondingly closed again clutch.These corresponding numerical value also can be transported to corresponding circuit block, make controller automatically solenoidoperated cluthes K1 and K2 thus.
As shown in Figure 1, can have additional switching element separately, be used for manually importing preset value.If but adjust these switching elements like this, make them be in " donor's preliminary election K1 or K2 ", then consider the corresponding control command that has discharged according to the effective friction energy value of reality.
Fig. 2 illustrates according to selectable method of the present invention, is used for determining possible " thermal shock " of clutch, in particular for the heat load of monitoring clutch.As shown in Figure 2, calculate clutch K1 or K2, i.e. the actual temperature value T of each driving plate of clutch K1 or K2 (roof pressure sheet) hereto here here respectively for each clutch K1 and K2 AP1RAnd T AP1LAnd T AP2LAnd T AP2R
Then by this temperature value by following in the difference component computes temperature difference shown in the circuit diagram of Fig. 2, i.e. difference.When surpassing spendable limiting value, carry out relative measures, especially surpass " activation threshold K1 ", promptly when surpassing the threshold value of determining correspondingly cut-off clutch K1 or when being lower than, when being lower than " deexcitation threshold k 1 " or " deexcitation threshold k 2 " closed again clutch K1 or K2.As Fig. 2 also illustrates, also can correspondingly imagine preset value (similar) manually with Fig. 1.
Importantly, especially can determine between clutch driving plate outer surface temperature variation, promptly on the driving plate thickness, i.e. numerical value T on each material thickness AP1ROr T AP1LBetween temperature variation.Here, promptly, also can disconnect again or closed clutch according to this numerical value in the temperature variation on the driving plate thickness and when the classification lifting/lowering surpasses the threshold value of determining as definite a kind of " temperature gradient ".Also can additionally accurately determine thus can calculate/determine corresponding numerical value thus better in the mutual temperature variation in the driving plate material of corresponding clutch plate of clutch.
By realizing corresponding advantages and avoid above-mentioned defective according to the device of method of the present invention and operation according to the method.

Claims (2)

1. the method that is used for monitoring thermal load of vehicle clutch, wherein calculate and/or the heat load of definite clutch, with be provided with the controller that is used for solenoidoperated cluthes, wherein determine rotating speed and the torque of motor and the rotating speed of transmission input shaft with calculation engine, determine the friction horsepower of clutch thus, with friction horsepower a definite time interval upper integral, it is characterized in that, the said method step is implemented each clutch in two clutches of the double clutch of a dual clutch transmission, wherein make each clutch (K1, the friction horsepower of integration K2) mates currently, wherein in certain time interval, always recomputate the friction horsepower of integration, i.e. friction energy of Jia Ruing, promptly determine actual effectively friction horsepower integral value by the part numerical value of in certain time interval, determining respectively, wherein when surpassing certain friction energy threshold value, open corresponding clutch (K1, K2) and the clutch (K1 that closed pair is answered when being lower than certain friction energy threshold value, K2), wherein by the corresponding value that switching element manually is identified for corresponding friction energy threshold value is set respectively.
2. the device that is used for monitoring thermal load of vehicle clutch, operation in accordance with the method for claim 1, it is characterized in that, be provided with one and be used for determining that circuit and this circuit of friction energy have comparing element, open corresponding clutch and the clutch that closed pair is answered when being lower than certain friction energy threshold value when surpassing certain friction energy threshold value thus.
CN2008100865542A 2007-03-20 2008-03-20 Method and apparatus for monitoring thermal load of vehicle clutch Expired - Fee Related CN101270788B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007013113A DE102007013113A1 (en) 2007-03-20 2007-03-20 Clutch thermal loading monitoring method for motor vehicle, involves adapting integrated friction power, and partially opening clutch during reaching of determined frictional energy threshold value i.e. during danger of thermal overloading
DE102007013113.7 2007-03-20

Publications (2)

Publication Number Publication Date
CN101270788A CN101270788A (en) 2008-09-24
CN101270788B true CN101270788B (en) 2011-05-11

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CN2008100865542A Expired - Fee Related CN101270788B (en) 2007-03-20 2008-03-20 Method and apparatus for monitoring thermal load of vehicle clutch

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DE (1) DE102007013113A1 (en)

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DE112010002990B4 (en) 2009-07-20 2019-12-19 Schaeffler Technologies AG & Co. KG Method for controlling a friction clutch
US8700352B2 (en) * 2011-05-10 2014-04-15 GM Global Technology Operations LLC Method for determining clutch interface temperatures in dry dual clutch transmissions
US8914186B2 (en) * 2012-04-20 2014-12-16 GM Global Technology Operations LLC Dual-clutch transmission thermal management
CN103472757B (en) * 2013-09-30 2016-01-20 北京汽车股份有限公司 A kind of control method of vehicle control device, device and vehicle
CN105156645B (en) * 2015-07-24 2017-07-18 安徽江淮汽车集团股份有限公司 The clutch temp control method and system of wet dual-clutch automatic transmission
CN106895141A (en) * 2015-12-21 2017-06-27 南京农业大学 A kind of double-clutch speed changer control mode
US9771079B2 (en) * 2016-01-11 2017-09-26 Cnh Industrial America Llc Systems and method for control of a power take-off clutch
DE102016211962A1 (en) * 2016-06-30 2018-01-04 Zf Friedrichshafen Ag Method for monitoring a friction clutch having at least two adjacent clutch plates
FR3065696B1 (en) * 2017-04-26 2020-10-23 Peugeot Citroen Automobiles Sa THERMAL PROTECTION PROCESS OF A CLUTCH DEVICE OF A VEHICLE, IN PARTICULAR AUTOMOTIVE
CN113339495B (en) * 2021-06-16 2022-09-02 宁波上中下自动变速器有限公司 Gearbox hydraulic system, control method and vehicle
CN114934962B (en) * 2022-04-22 2024-04-16 潍柴动力股份有限公司 Method and device for determining risk of clutch damage and vehicle
CN115076256A (en) * 2022-06-21 2022-09-20 中国第一汽车股份有限公司 Clutch overheating prevention protection method and device and vehicle

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DE102007013113A1 (en) 2008-09-25

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