CN105840686A - Method for calculating surface temperature of wet double clutch - Google Patents

Method for calculating surface temperature of wet double clutch Download PDF

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Publication number
CN105840686A
CN105840686A CN201610285802.0A CN201610285802A CN105840686A CN 105840686 A CN105840686 A CN 105840686A CN 201610285802 A CN201610285802 A CN 201610285802A CN 105840686 A CN105840686 A CN 105840686A
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clutch
oil
temperature
cooling
surface temperature
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CN105840686B (en
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熊杰
张广辉
周达
赵彬
曹龙
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FAW Group Corp
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FAW Group Corp
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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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling
    • 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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/74—Features relating to lubrication

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The invention discloses a method for calculating the surface temperature of a wet double clutch. The wet double clutch consists of an inner clutch and an outer clutch, according to the mechanical structure of the wet double clutch, the surface temperatures of the inner clutch and the outer clutch are calculated, respectively. The method comprises the following steps of calculating the heating powers of the inner clutch and the outer clutch according to a rotational speed difference between an engine and a driven disc of the inner clutch, a rotational speed difference between the engine and a driven disc of the outer clutch, the transmission torque of the inner clutch and the transmission torque of the outer clutch; calculating the cooling powers of the inner clutch and the outer clutch according to the surface temperature of the inner clutch, the temperature of an oil pan, the flow rate of cooling oil and the oil temperature of an oil outlet of the inner clutch; calculating the temperature change rates of the inner clutch and the outer clutch from the heating powers and the cooling powers of the inner clutch and the outer clutch; conducting integrating on the temperature change rates, and calculating the current surface temperatures of the inner clutch and the outer clutch. According to the method for calculating the surface temperature of the wet double clutch, the surface temperature of the automatic wet double clutch can be accurately calculated through the oil temperature of the oil pan.

Description

Wet-type dual-clutch surface temperature calculates method
Technical field
The invention belongs to automatic wet-type dual-clutch transmission and control technical field, relate to a kind of for wet The method that formula double clutch surface temperature calculates.
Background technology
Double clutch is divided into dry clutch and the big class of wet clutch two, and dry clutch is only by air-cooled Heat radiation, ratio of heat capacities is relatively low, and clutch can not be in sliding state of rubbing for a long time, and wet clutch quilt Being immersed in transmission oil cooling, thermal capacity is higher, can be chronically at sliding state of rubbing, and transmission moment of torsion Capacity is relatively big, so being more suitable for configuring double-clutch automatic transmission.
When wet clutch hot soak condition, the easily infringement coefficient of friction of clutch, increasing Add clutch disc wear extent and reduce the capacity etc. of torsion pass, if temperature is too high and has exceeded wet type clutch Device ability to bear, then be easy to the phenomenons such as clutch ablation occur.In order to prevent clutch temp too high, Clutch temp must be monitored in real time.Wet clutch temperature with produce heat number and the time have Close, because clutch separation is the shortest with binding time, separate frequently and easily lead to clutch with combination Local temperature is too high, so obtaining clutch surface temperature in time and take corresponding measure, to protection Clutch is very important.
The number of applying for a patent CN 103459876 A patent discloses one and utilizes clutch pressure to predict The method of clutch temp.The number of applying for a patent CN 103967963 A patent discloses a kind of utilization god Through network algorithm, the method calculating clutch temp based on clutch pressure.The number of applying for a patent CN 104501997 A patents disclose one and mainly utilize temperature sensor, auxiliary to utilize temperature model to examine The method surveying clutch temp.The open one of the number of applying for a patent CN 104698864 A patent utilizes to be looked into Heat compensating factor that table obtains and the method that clutch specific heat capacity calculates clutch temp.Apply for a patent Number CN 104049650 A patent uses FUZZY ALGORITHMS FOR CONTROL, based on clutch pressure, speed discrepancy and Clutch temperature at outlet calculates the method for clutch temp.But, the technology disclosed in these patents Scheme, can not to calculate accurately in real time the surface temperature of clutch by utilizing oil sump oil temperature data Degree.
Two clutches of wet-type dual-clutch are nested together, and cooling oil first flows through internal clutch Enter back into outer clutch, finally flowed out to oil sump by outer clutch.Because internal clutch and outer clutch The heat radiation power of device is different, so the temperature of inside and outside clutch must be calculated respectively.And existing skill In the clutch temp control method of art, do not calculate the temperature of inside and outside clutch respectively, thus Can accurately not calculate the temperature of wet clutch, thus wet clutch can not be effectively protected.
Therefore, how in real time to calculate accurately the surface temperature of wet-type dual-clutch with protection wet type double from Clutch becomes problem urgently to be resolved hurrily.
Summary of the invention
For solving above-mentioned technical problem, the present invention provide one can calculate the most accurately wet type double from Clutch surface temperature, the wet-type dual-clutch surface temperature playing an important role protection clutch calculates Method.
The technical scheme that embodiments of the invention provide is as follows:
The present invention provides a kind of wet-type dual-clutch surface temperature to calculate method, including: according to electromotor Speed discrepancy W with internal clutch clutch plateIN, the speed discrepancy of electromotor and outer clutch driven plate WOUT, internal clutch transmission moment of torsion MINWith outer clutch transmission torque MOUTCalculate internal clutch Heating power PIN_CltHeatHeating power P with outer clutchOUT_CltHeat；According to a upper cycle Inner clutch surface temperature TIN_Clt, oil sump oil temperature TSumpCount with internal clutch cooling oil flow Q Calculate the cooling power P of internal clutchIN_CltCool, according to outer clutch surface temperature of the upper cycle TOUT_Clt, internal clutch outlet oil temperature TIN_OilOuter clutch is calculated with outer clutch cooling oil flow Q The cooling power P of deviceOUT_CltCool；According to oil sump oil temperature TSump, a upper cycle internal clutch goes out Mouth oil temperature TIN_OilWith the cooling power that internal clutch cooling oil flow Q calculates internal clutch cooling oil PIN-OilCool；Oil temperature T is exported according to internal clutchIN_Oil, outer clutch outlet of upper cycle oil temperature TOUT_OilWith the cooling power that outer clutch cooling oil flow Q calculates outer clutch cooling oil POUT-OilCool；The heating power P of internal clutchIN_CltHeat, the heating power of outer clutch POUT_CltHeatHeating coefficient divided by inside and outside clutch obtains the value added of inner clutch surface temperature ΔTIN_CltInc, the value added Δ T of outer clutch surface temperatureOUT_CltInc, the cooling power of internal clutch PIN_CltCool, the cooling power P of outer clutchOUT_CltCoolCooling ratio, outer divided by internal clutch The cooling ratio of clutch obtains the decreasing value Δ T of inner clutch surface temperatureIN_CltDwn, outer clutch The decreasing value Δ T of surface temperatureOUT_CltDwn, inner clutch surface temperature increase Δ TIN_CltInc, outer Clutch surface temperature increase Δ TOUT_CltIncDeduct inner clutch surface temperature decreasing value ΔTIN_CltDwn, outer clutch surface temperature decreasing value Δ TOUT_CltDwnObtain inner clutch surface temperature Changing value and outer clutch surface temperature change value, inner clutch surface temperature change value, outer clutch Surface temperature changing value is multiplied by sampling period Tcl and obtains the rate of temperature change Δ T of internal clutchIN_Clt, outer The rate of temperature change Δ T of clutchOUT_Clt；The heating power P of internal clutchIN_CltHeatDivided by interior clutch The heating power of device cooling oil obtains the temperature increase Δ T of internal clutch cooling oilIN_OilInc；Interior clutch The cooling power P of device cooling oilIN-OilCoolCooling power divided by internal clutch cooling oil obtains interior clutch Device cooling oil temperature degree decreasing value Δ TIN_OilDwn；Internal clutch cooling oil temperature degree value added Δ TIN_OilIncSubtract Remove internal clutch cooling oil temperature degree decreasing value Δ TIN_OilDwnObtain internal clutch temperature change value；In from Clutch temperature change value is multiplied by sampling period Tcl and obtains internal clutch cooling oil temperature degree rate of change ΔTIN_Oil；In like manner, outer clutch cooling oil temperature degree value added Δ T is obtainedOUT_CltInc, temperature decreasing value ΔTOUT_CltDwnAnd rate of temperature change Δ TOUT_Oil；To internal clutch cooling oil temperature degree rate of change and outward from Clutch cooling oil temperature degree rate of change is integrated obtaining oil temperature T at internal clutch oil-outIN_Oil、 ΔTOUT_Oil, inner clutch surface rate of temperature change and outer clutch surface rate of temperature change are amassed Get surface temperature T of internal clutchIN_CltSurface temperature T with outer clutchOUT_Clt。
Further, the heating merit of described internal clutch is calculated according to following formula (1) and (2) Rate PIN_CltHeatHeating power P with outer clutchOUT_CltHeat:
PIN_CltHeat=WIN×MIN (1)
POUT_CltHeat=WOUT×MOUT (2)。
Further, the cooling merit of described internal clutch is calculated according to following formula (3) and (4) Rate PIN_CltCoolCooling power P with described outer clutchOUT_CltCool:
PIN_CltCoolt=(TIN_Clt-TSump)×Q (3)
POUT_CltCool=(TOUT_Clt-TIN_Oil)×Q (4)。
Further, described internal clutch cooling oil is calculated according to following formula (5) and (6) Cooling power PIN-OilCoolCooling power P with described outer clutchOUT_CltCool:
PIN_OilCool=(TIN_Oil-TSump)×Q (5)
POUT_OilCool=(TOUT_Oil-TIN_Oil)×Q (6)。
Further, the rate of temperature change of internal clutch is calculated according to following formula (7)-(8) ΔTIN_CltRate of temperature change Δ T with outer clutchOUT_CltAnd count according to formula (9)-(10) Calculate the rate of temperature change Δ T of the cooling oil of internal clutchIN_OilBecome with the temperature of the cooling oil of outer clutch Rate Δ TOUT_Oil:
ΔTIN_Clt=(Δ TIN_CltInc-ΔTIN_CltDwn)×Tcl (6)
ΔTOUT_Clt=(Δ TOUT_CltInc-ΔTOUT_CltDwn)×Tcl (7)
ΔTIN_Oil=(Δ TIN_OilInc-ΔTIN_OilDwn)×Tcl (8)
ΔTOUT_Oil=(Δ TOUT_OilInc-ΔTOUT_OilDwn)×Tcl (10)。
Further, described internal clutch and outer clutch are calculated according to following formula (11)-(14) Surface temperature T of deviceIN_Clt、TOUT_CltCooling oil temperature degree T with internal clutch and outer clutchIN_Oil、 TOUT-Oil:
TIN_Clt=∫ Δ TIN_Cltdt (9)
TOUT_Clt=∫ Δ TOUT_Cltdt (10)
TIN_Oil=∫ Δ TIN_Oildt (11)
TOUT_Oil=∫ Δ TOUT_Oildt (14)。
Further, described oil sump oil temperature TSumpRecorded by temperature sensor.
Further, described sampling period Tcl is 0.01 second.
Having the beneficial effect that of wet-type dual-clutch of the present invention
1, the present invention is utilized can to calculate wet clutch surface temperature the most accurately, according to calculating The clutch surface temperature obtained is to control the cooling flow of clutch, thus plays protection clutch Effect.
2, by known wet-type dual-clutch signal, double clutch surface temperature is calculated exactly Oil temperature with double clutch, it is not necessary to additionally increase sensor, thus saved cost.
Accompanying drawing explanation
Fig. 1 is the flow chart of the surface temperature calculating method of the wet-type dual-clutch of the present invention.
Fig. 2 is the structure diagram of the wet-type dual-clutch of the present invention.
Fig. 3 is the cooling oil flow circuit diagram of the wet-type dual-clutch of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described.
Fig. 1 is the flow chart of the surface temperature calculating method of the wet-type dual-clutch of the present invention.Fig. 2 is The structure diagram of the wet-type dual-clutch of the present invention.Fig. 3 is the cooling of the wet-type dual-clutch of the present invention Oil flow circuit diagram.
First, referring to figs. 2 and 3, the wet-type dual-clutch of the present invention is simply introduced.
As in figure 2 it is shown, the wet-type dual-clutch of the present invention includes mutually being enclosed within one in terms of frame for movement The internal clutch 5 risen and outer clutch 6.Outer clutch driven plate 62 and the first transmission input shaft 1 Being connected, internal clutch clutch plate 51 is connected with the second transmission input shaft 2, the master of inside and outside clutch Moving plate 51,61 is all connected on engine flywheel (not shown).
As it is shown on figure 3, the wet-type dual-clutch cooling oil of the present invention flows out first by internal clutch from fuel tank Oil inlet passage 7 enters internal clutch 5, cools down internal clutch 5, owing to internal clutch 5 is high Speed rotates, and cooling is oily in internal clutch oil-out 3 is dumped into outer clutch 6, external clutch 6 Cooling down, due to outer clutch 6 also at high speed rotating, cooling oil is through outer clutch oil-out 4 quilt Throw away double clutch 6, after flow back into oil sump through oil pipe.
It follows that the surface temperature calculating method of the wet-type dual-clutch of the present invention is introduced.As Shown in Fig. 1, the surface temperature of the wet-type dual-clutch of the present invention calculates method and includes:
Step 101: obtain relevant parameter
Utilize temperature sensor (not shown) to measure and obtain oil sump oil temperature Tsump, clutch cooling oil Flow Q is used as preset parameter.These preset parameters are known conditions, come according to these preset parameters Calculating inside and outside clutch surface temperature and the oil temperature of wet-type dual-clutch, concrete calculating is with reference to following Step 102-106.
Step 102: calculate the heating power P of internal clutchIN_CltHeatHeating power with outer clutch POUT_CltHeat
Double clutch cooling oil is introduced into internal clutch 5, the most again by interior clutch after oil sump flows out Device oil-out 3 enters outer clutch 6, so, oil sump oil temperature can be cooled down as internal clutch The entrance temperature of oil, cools down the entrance temperature of oil using the temperature at outlet of internal clutch as outer clutch Degree.By electromotor and double clutch clutch plate speed discrepancy WIN、WOUTAnd clutch transmission torque MIN、 MOUT, calculate internal clutch heating power P according to general formulae P=W × MIN_CltHeatWith outer clutch Device heating power POUT_CltHeat, wherein, W represents rotating speed difference, and M represents the torsion that clutch transmits Square, concrete calculating sees formula (1) (2).
PIN_CltHeat=WIN×MIN (1)
POUT_CltHeat=WOUT×MOUT (2)
Step 103: calculate the cooling power P of internal clutchIN_CltCoolCooling power with outer clutch POUT_CltCool
According to upper cycle inner clutch surface temperature TIN_Clt, oil sump oil temperature TSumpWith interior clutch Device cooling oil flow Q calculates the cooling power P of internal clutchIN_CltCool, according to outside the upper cycle Clutch surface temperature TOUT_Clt, internal clutch outlet oil temperature TIN_OilWith outer clutch cooling oil flow Q calculates the cooling power of outer clutch, and concrete calculating sees following formula (3) and (4):
PIN_CltCoolt=(TIN_Clt-TSump)×Q (3)
POUT_CltCool=(TOUT_Clt-TIN_Oil)×Q (4)
Step 104: calculate the cooling power P of internal clutch cooling oilIN-OilCoolCool down with outer clutch The cooling power P of oilOUT-OilCool
When calculating double clutch (inside and outside clutch) surface temperature, it is to be appreciated that in double clutch Cooling oil temperature degree, at the cooling oil calculated while double clutch surface temperature in clutch to be calculated Temperature, Computing Principle is the same with calculating double clutch surface temperature.
Specifically, according to oil sump oil temperature TSump, upper cycle internal clutch outlet oil temperature TIN_Oil With the cooling power P that internal clutch cooling oil flow Q calculates internal clutch cooling oilIN-OilCool；Root Oil temperature T is exported according to internal clutchIN_Oil, outer clutch outlet of upper cycle oil temperature TOUT_OilWith outward from Clutch cooling oil flow Q calculates the cooling power P of outer clutch cooling oilOUT-OilCool, specifically count Calculation sees following formula (5) and (6):
PIN_OilCool=(TIN_Oil-TSump)×Q (5)
POUT_OilCool=(TOUT_Oil-TIN_Oil)×Q (6)。
Step 105: calculate the rate of temperature change Δ T of inside and outside clutchIN_Clt、ΔTOUT_CltAnd interior, Outer clutch cooling oil temperature degree rate of change Δ TIN_Oil、ΔTOUT_Oil
The heating power P of internal clutchIN_CltHeat, the heating power P of outer clutchOUT_CltHeatDivided by The heating coefficient of inside and outside clutch obtains the value added Δ T of inner clutch surface temperatureIN_CltInc, outward from The value added Δ T of clutch surface temperatureOUT_CltInc, the cooling power P of internal clutchIN_CltCool, outward from The cooling power P of clutchOUT_CltCoolCooling ratio, the cooling system of outer clutch divided by internal clutch Number obtains the decreasing value Δ T of inner clutch surface temperatureIN_CltDwn, the reduction of outer clutch surface temperature Value Δ TOUT_CltDwn, inner clutch surface temperature increase Δ TIN_CltInc, outer clutch surface temperature Value added Δ TOUT_CltIncDeduct inner clutch surface temperature decreasing value Δ TIN_CltDwn, outer clutch table Surface temperature decreasing value Δ TOUT_CltDwnObtain inner clutch surface temperature change value and outer clutch surface Temperature change value, inner clutch surface temperature change value, outer clutch surface temperature change value are multiplied by and adopt Sample cycle T cl obtains the rate of temperature change Δ T of internal clutchIN_Clt, the rate of temperature change of outer clutch ΔTOUT_Clt, concrete calculating sees following formula (7)-(8).
The heating power P of internal clutchIN_CltHeatHeating power divided by internal clutch cooling oil obtains The temperature increase Δ T of internal clutch cooling oilIN_OilInc；The cooling power of internal clutch cooling oil PIN-OilCoolCooling power divided by internal clutch cooling oil obtains internal clutch cooling oil temperature degree decreasing value ΔTIN_OilDwn；Internal clutch cooling oil temperature degree value added Δ TIN_OilIncDeduct internal clutch cooling oil temperature Degree decreasing value Δ TIN_OilDwnObtain internal clutch temperature change value；Internal clutch temperature change value is multiplied by Sampling period Tcl obtains internal clutch cooling oil temperature degree rate of change Δ TIN_Oil；In like manner, outer clutch is obtained Device cooling oil temperature degree value added Δ TOUT_CltInc, temperature decreasing value Δ TOUT_CltDwnAnd rate of temperature change ΔTOUT_Oil, concrete calculating sees following formula (9)-(10).
ΔTIN_Clt=(Δ TIN_CltInc-ΔTIN_CltDwn)×Tcl (7)
ΔTOUT_Clt=(Δ TOUT_CltInc-ΔTOUT_CltDwn)×Tcl (8)
ΔTIN_Oil=(Δ TIN_OilInc-ΔTIN_OilDwn)×Tcl (9)
ΔTOUT_Oil=(Δ TOUT_OilInc-ΔTOUT_OilDwn)×Tcl (10)
Typically, sampling period Tcl is 0.01 second.Additionally, in the present invention, internal clutch is with outer The heating coefficient of clutch and cooling ratio determine according to the model of clutch, for prior art, this Place omits and it is discussed in detail.
Step 106: calculate surface temperature T of inside and outside clutchIN_Clt、TOUT_CltWith inside and outside clutch Device cooling oil temperature degree TIN_Oil、TOUT_Oil
Above-mentioned steps 105 calculates rate of temperature change, rate of temperature change has been quadratured, just Inside and outside clutch surface temperature and inside and outside clutch cooling oil temperature degree can be obtained.Specifically, right Internal clutch cooling oil temperature degree rate of change and outer clutch cooling oil temperature degree rate of change are integrated obtaining Oil temperature T at internal clutch oil-outIN_Oil、ΔTOUT_Oil, to inner clutch surface rate of temperature change and Outer clutch surface rate of temperature change is integrated obtaining surface temperature T of internal clutchIN_CltWith outward from Surface temperature T of clutchOUT_Clt, inside and outside clutch can be calculated by following formula (11)-(14) Surface temperature T of deviceIN_Clt、TOUT_CltCooling oil temperature degree T with inside and outside clutchIN_Oil、TOUT_Oil:
TIN_Clt=∫ Δ TIN_Cltdt (11)
TOUT_Clt=∫ Δ TOUT_Cltdt (12)
TIN_Oil=∫ Δ TIN_Oildt (13)
TOUT_Oil=∫ Δ TOUT_Oildt (14)
In summary, the surface temperature utilizing the wet-type dual-clutch of the present invention calculates method can be real-time Calculate wet clutch surface temperature accurately, control according to calculated clutch surface temperature The cooling flow of clutch, thus play the effect of protection clutch, it is possible to double by known wet type Clutch engagement signal, calculates the oil temperature of double clutch surface temperature and double clutch exactly, it is not necessary to Additionally increase sensor, thus save cost.
Although an embodiment of the present invention has been shown and described, those of ordinary skill in the art is permissible Understand: can these embodiments be carried out multiple in the case of without departing from the principle of the present invention and objective Changing, revise, replace and modification, the scope of the present invention is limited by claim and equivalent thereof.

Claims (8)

1. a wet-type dual-clutch surface temperature calculates method, it is characterised in that including:
Speed discrepancy W according to electromotor Yu internal clutch clutch plateIN, electromotor driven with outer clutch The speed discrepancy W of dishOUT, internal clutch transmission moment of torsion MINWith outer clutch transmission torque MOUTCount Calculate the heating power P of internal clutchIN_CltHeatHeating power P with outer clutchOUT_CltHeat；
According to upper cycle inner clutch surface temperature TIN_Clt, oil sump oil temperature TSumpWith interior clutch Device cooling oil flow Q calculates the cooling power P of internal clutchIN_CltCool, according to outside the upper cycle Clutch surface temperature TOUT_Clt, internal clutch outlet oil temperature TIN_OilWith outer clutch cooling oil flow Q calculates the cooling power P of outer clutchOUT_CltCool；
According to oil sump oil temperature TSump, upper cycle internal clutch outlet oil temperature TIN_OilWith interior clutch Device cooling oil flow Q calculates the cooling power P of internal clutch cooling oilIN-OilCool；According to interior clutch Device outlet oil temperature TIN_Oil, outer clutch outlet of upper cycle oil temperature TOUT_OilCool down with outer clutch Oil flow Q calculates the cooling power P of outer clutch cooling oilOUT-OilCool；
The heating power P of internal clutchIN_CltHeat, the heating power P of outer clutchOUT_CltHeatDivided by The heating coefficient Cof of inside and outside clutchIN_Heat、CofOUT_HeatObtain inner clutch surface temperature Value added Δ TIN_CltInc, the value added Δ T of outer clutch surface temperatureOUT_CltInc, internal clutch cold But power PIN_CltCool, the cooling power P of outer clutchOUT_CltCoolCooling system divided by internal clutch Number CofIN_Cool, the cooling ratio Cof of outer clutchOUT_CoolObtain subtracting of inner clutch surface temperature Little value Δ TIN_CltDwn, the decreasing value Δ T of outer clutch surface temperatureOUT_CltDwn, inner clutch surface Temperature increase Δ TIN_CltInc, outer clutch surface temperature increase Δ TOUT_CltIncDeduct internal clutch Surface temperature decreasing value Δ TIN_CltDwn, outer clutch surface temperature decreasing value Δ TOUT_CltDwnIn obtaining Clutch surface temperature change value and outer clutch surface temperature change value, inner clutch surface temperature becomes Change value, outer clutch surface temperature change value are multiplied by sampling period Tcl and obtain the temperature change of internal clutch Rate Δ TIN_Clt, the rate of temperature change Δ T of outer clutchOUT_Clt；
The heating power P of internal clutchIN_CltHeatHeating power divided by internal clutch cooling oil obtains The temperature increase Δ T of internal clutch cooling oilIN_OilInc；The cooling power of internal clutch cooling oil PIN-OilCoolCooling power divided by internal clutch cooling oil obtains internal clutch cooling oil temperature degree decreasing value ΔTIN_OilDwn；Internal clutch cooling oil temperature degree value added Δ TIN_OilIncDeduct internal clutch cooling oil temperature Degree decreasing value Δ TIN_OilDwnObtain internal clutch temperature change value；Internal clutch temperature change value is multiplied by Sampling period Tcl obtains internal clutch cooling oil temperature degree rate of change Δ TIN_Oil；In like manner, outer clutch is obtained Device cooling oil temperature degree value added Δ TOUT_CltInc, temperature decreasing value Δ TOUT_CltDwnAnd rate of temperature change ΔTOUT_Oil；
Internal clutch cooling oil temperature degree rate of change and outer clutch cooling oil temperature degree rate of change are amassed Get oil temperature T at internal clutch oil-outIN_Oil、ΔTOUT_Oil, inner clutch surface temperature is become Rate and outer clutch surface rate of temperature change are integrated obtaining surface temperature T of internal clutchIN_Clt Surface temperature T with outer clutchOUT_Clt。
Wet-type dual-clutch surface temperature the most according to claim 1 calculates method, and its feature exists In, the heating power P of described internal clutch is calculated according to following formula (1) and (2)IN_CltHeat Heating power P with outer clutchOUT_CltHeat:
PIN_CltHeat=WIN×MIN (1)
POUT_CltHeat=WOUT×MOUT (2)。
Wet-type dual-clutch surface temperature the most according to claim 1 calculates method, and its feature exists In, the cooling power P of described internal clutch is calculated according to following formula (3) and (4)IN_CltCool Cooling power P with described outer clutchOUT_CltCool:
PIN_CltCoolt=(TIN_Clt-TSump)×Q (3)
POUT_CltCool=(TOUT_Clt-TIN_Oil)×Q (4)。
Wet-type dual-clutch surface temperature the most according to claim 1 calculates method, and its feature exists In, the cooling power of described internal clutch cooling oil is calculated according to following formula (5) and (6) PIN-OilCoolCooling power P with described outer clutchOUT_CltCool:
PIN_OilCool=(TIN_Oil-TSump)×Q (5)
POUT_OilCool=(TOUT_Oil-TIN_Oil)×Q (6)。
Wet-type dual-clutch surface temperature the most according to claim 1 calculates method, and its feature exists In, the rate of temperature change Δ T of internal clutch is calculated according to following formula (7)-(8)IN_CltOutward The rate of temperature change Δ T of clutchOUT_CltAnd calculate internal clutch according to formula (9)-(10) Cooling oil rate of temperature change Δ TIN_OilRate of temperature change with the cooling oil of outer clutch ΔTOUT_Oil:
ΔTIN_Clt=(Δ TIN_CltInc-ΔTIN_CltDwn)×Tcl (6)
ΔTOUT_Clt=(Δ TOUT_CltInc-ΔTOUT_CltDwn)×Tcl (7)
ΔTIN_Oil=(Δ TIN_OilInc-ΔTIN_OilDwn)×Tcl (8)
ΔTOUT_Oil=(Δ TOUT_OilInc-ΔTOUT_OilDwn)×Tcl (10)。
Wet-type dual-clutch surface temperature the most according to claim 1 calculates method, and its feature exists In, the surface temperature of described internal clutch and outer clutch is calculated according to following formula (11)-(14) Degree TIN_Clt、TOUT_CltCooling oil temperature degree T with internal clutch and outer clutchIN_Oil、TOUT-Oil:
TIN_Clt=∫ Δ TIN_Cltdt (9)
TOUT_Clt=∫ Δ TOUT_Cltdt (10)
TIN_Oil=∫ Δ TIN_Oildt (11)
TOUT_Oil=∫ Δ TOUT_Oildt (14)。
Wet-type dual-clutch surface temperature the most according to claim 1 calculates method, and its feature exists In, described oil sump oil temperature TSumpRecorded by temperature sensor.
Wet-type dual-clutch surface temperature the most according to claim 1 calculates method, and its feature exists In, described sampling period Tcl is 0.01 second.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106678213A (en) * 2016-11-10 2017-05-17 广州汽车集团股份有限公司 Temperature real-time monitoring method and device for wet double clutch transmission
CN108343733A (en) * 2018-02-13 2018-07-31 重庆长安汽车股份有限公司 A kind of the clutch temp control method and system of wet type DCT
CN108361360A (en) * 2018-02-13 2018-08-03 重庆长安汽车股份有限公司 A kind of determination method and device of the clutch surface temperature of wet type DCT
CN110206828A (en) * 2019-05-23 2019-09-06 中国第一汽车股份有限公司 A kind of hybrid power car clutch coordinating flow quantity control method and system
CN110702404A (en) * 2019-08-29 2020-01-17 中国第一汽车股份有限公司 Method, device and equipment for measuring temperature of clutch and storage medium
CN110953263A (en) * 2019-12-04 2020-04-03 珠海华粤传动科技有限公司 Control method and device based on surface temperature of wet-type double clutch
CN113661341A (en) * 2019-03-29 2021-11-16 麦格纳动力系有限两合公司 Method for controlling a clutch unit
CN115163821A (en) * 2022-06-29 2022-10-11 江苏汇智高端工程机械创新中心有限公司 Micro-motion control method and system for mechanical gearbox of port

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CN106678213A (en) * 2016-11-10 2017-05-17 广州汽车集团股份有限公司 Temperature real-time monitoring method and device for wet double clutch transmission
CN106678213B (en) * 2016-11-10 2019-08-02 广州汽车集团股份有限公司 Temperature method of real-time and device for wet dual clutch transmission
CN108343733A (en) * 2018-02-13 2018-07-31 重庆长安汽车股份有限公司 A kind of the clutch temp control method and system of wet type DCT
CN108361360A (en) * 2018-02-13 2018-08-03 重庆长安汽车股份有限公司 A kind of determination method and device of the clutch surface temperature of wet type DCT
CN113661341A (en) * 2019-03-29 2021-11-16 麦格纳动力系有限两合公司 Method for controlling a clutch unit
US11746837B2 (en) 2019-03-29 2023-09-05 Magna powertrain gmbh & co kg Method for controlling a clutch unit
CN113661341B (en) * 2019-03-29 2023-09-15 麦格纳动力系有限两合公司 Method for controlling a clutch unit
CN110206828A (en) * 2019-05-23 2019-09-06 中国第一汽车股份有限公司 A kind of hybrid power car clutch coordinating flow quantity control method and system
CN110702404A (en) * 2019-08-29 2020-01-17 中国第一汽车股份有限公司 Method, device and equipment for measuring temperature of clutch and storage medium
CN110953263A (en) * 2019-12-04 2020-04-03 珠海华粤传动科技有限公司 Control method and device based on surface temperature of wet-type double clutch
CN110953263B (en) * 2019-12-04 2021-08-31 珠海华粤传动科技有限公司 Control method and device based on surface temperature of wet-type double clutch
CN115163821A (en) * 2022-06-29 2022-10-11 江苏汇智高端工程机械创新中心有限公司 Micro-motion control method and system for mechanical gearbox of port

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