CN106678213A - Temperature real-time monitoring method and device for wet double clutch transmission - Google Patents
Temperature real-time monitoring method and device for wet double clutch transmission Download PDFInfo
- Publication number
- CN106678213A CN106678213A CN201610997159.4A CN201610997159A CN106678213A CN 106678213 A CN106678213 A CN 106678213A CN 201610997159 A CN201610997159 A CN 201610997159A CN 106678213 A CN106678213 A CN 106678213A
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- clutch
- infinitesimal
- heat
- cooling oil
- temperature
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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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/001—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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/008—Arrangements for monitoring working conditions, e.g. wear, temperature of clutches
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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)
- Mechanical Operated Clutches (AREA)
Abstract
The invention provides a temperature real-time monitoring method and device for a wet double clutch transmission. The method includes the steps that the double clutch infinitesimal initial temperature, the cooling oil initial output temperature, the double clutch cooling oil flow, the double clutch cooling oil input temperature and the double clutch infinitesimal heat input are determined; the double clutch infinitesimal initial temperature, the cooling oil initial output temperature, the double clutch cooling oil flow, the double clutch cooling oil input temperature and the double clutch infinitesimal heat input are applied to a heat model, and the double clutch infinitesimal current temperature and the cooling oil current output temperature are calculated for the heat model; the double clutch current temperature and the double clutch cooling oil current output temperature are determined based on the double clutch infinitesimal current temperature and the cooling oil current output temperature; and control actions are executed according to the determined double clutch current temperature and the double clutch cooling oil current output temperature. In this way, the temperature inside the wet double clutch transmission can be monitored in real time through the method and device.
Description
Technical field
The present invention relates to a kind of modeling with regard to double-clutch speed changer temperature, more particularly to it is a kind of for the double clutch changes of wet type
The temperature method of real-time of fast device and device.
Background technology
The real time temperature of clutch can affect protection, service life and the reliability of clutch.Therefore, monitoring in real time
The temperature of clutch provides the improper failure for avoiding clutch the foundation of control.At present, the field just for dry type from
Clutch structure thermal model has carried out specification, the rarely useful thermal model in wet-type dual-clutch temperature real-time monitoring, but wet
Formula double clutch has in structure obvious difference with dry clutch, the cooler environment and cooling residing for wet-type dual-clutch
Mode is totally different from dry clutch, it is necessary to finite element thermal model of the design suitable for wet-type dual-clutch mechanism.
And the real time temperature of clutch affects protection, service life and the reliability of clutch, real-time monitoring temperature can
To provide the foundation of control and avoid the improper failure of clutch, meanwhile, the temperature calculated in prior art is as whole
The mean temperature of individual clutch, improvement of still needing on the accuracy to temperature sometime.
The content of the invention
It is an object of the invention to provide a kind of temperature method of real-time and device for wet dual clutch transmission,
To solve the above-mentioned technical problem for being unable to real-time monitoring wet-type dual-clutch temperature.
Based on this, the present invention proposes a kind of method of real-time of wet dual clutch transmission temperature, and it includes following
Step：
Determine initial temperature, the initial output temperature of cooling oil of first clutch infinitesimal and second clutch infinitesimal；
Determine the cooling oil flow of double clutch；
Determine the cooling oil input temp of double clutch；
Determine that the heat input of the first clutch infinitesimal and the heat of the second clutch infinitesimal are input into；
By the initial temperature of the first clutch infinitesimal and second clutch infinitesimal, the initial output temperature of cooling oil and double
The cooling oil flow of clutch, cooling oil input temp, the heat input of the first clutch infinitesimal and second clutch are micro-
The heat input of unit is applied to thermal model, and micro- using the thermal model calculating first clutch infinitesimal and second clutch
Current Temperatures, the current output temperature of cooling oil of unit；
It is true based on the Current Temperatures of the first clutch infinitesimal and second clutch infinitesimal, the current output temperature of cooling oil
Determine Current Temperatures, the current output temperature of cooling oil of double clutch of first clutch and second clutch；
Using Jing determine the first clutch and the second clutch Current Temperatures and double clutch it is cold
But the current output temperature of oil is performing control action.
Optionally, the first clutch is located at the outside of the second clutch, and the second clutch most inner side is micro-
Unit cooling oil input temp be the double clutch cooling oil input temp, the first clutch most inner side infinitesimal it is cold
Oily input temp determined by the current output temperature of cooling oil of the second clutch outermost infinitesimal, first clutch
Cooling oil current output temperature of the current output temperature of cooling oil of device outermost infinitesimal as double clutch.
Optionally, the first clutch infinitesimal includes the first friction plate infinitesimal and the first steel disc infinitesimal；
Determine that the heat of the first clutch infinitesimal includes the step of input：
Determine the heat input of first clutch；
The heat input for determining first clutch is assigned to the heat input of hot danger position；
The heat input for determining the hot danger position of first clutch is assigned to the heat input of infinitesimal；
The heat input of the first clutch infinitesimal is assigned to into the first friction plate infinitesimal and the first steel disc infinitesimal
Both sides.
Further, the heat input of the first clutch is obtained by following steps：
Determine the transmitting torque of the first clutch；
The sliding wear power of the first clutch is determined by the transmitting torque of the first clutch；
The heat input of the first clutch is determined by the sliding wear power of the first clutch.
Optionally, the second clutch infinitesimal includes the second friction plate infinitesimal and the second steel disc infinitesimal；
Determine that the heat of the second clutch infinitesimal includes the step of input：
Determine the heat input of second clutch；
The heat input for determining second clutch is assigned to the heat input of hot danger position；
The heat input for determining the hot danger position of second clutch is assigned to the heat input of infinitesimal；
The heat input of the second clutch infinitesimal is assigned to into the second friction plate infinitesimal and the second steel disc infinitesimal
Both sides.
Optionally, the heat input of the second clutch is obtained by following steps：
Determine the transmitting torque of the second clutch；
The sliding wear power of the second clutch is determined by the transmitting torque of the second clutch；
The heat input of the second clutch is determined by the sliding wear power of the second clutch.
Optionally, the Current Temperatures of the first clutch infinitesimal and the current output temperature of cooling oil are that first clutch is micro-
First previous cycle terminate after temperature.
Optionally, the Current Temperatures of the second clutch infinitesimal and the current output temperature of cooling oil are that second clutch is micro-
First previous cycle terminate after temperature.
Further, the Current Temperatures and cooling oil using the thermal model calculating first clutch infinitesimal are currently defeated
Go out temperature, comprise the following steps：
Determine the heat energy variable quantity of the first friction plate infinitesimal；
Determine the heat energy variable quantity of the first steel disc infinitesimal；
Determine the thermal convection current heat-energy transducer variable quantity of the first friction plate infinitesimal and cooling oil；
Determine the thermal convection current heat-energy transducer variable quantity of the first steel disc infinitesimal and cooling oil；
It is determined that the cooling oil heat energy variable quantity for passing through the first clutch infinitesimal；
By the heat energy variable quantity of the first friction plate infinitesimal, the heat energy variable quantity of the first steel disc infinitesimal, the first friction plate
The thermal convection current heat-energy transducer variable quantity of infinitesimal and cooling oil, the thermal convection current heat-energy transducer variable quantity of the first steel disc infinitesimal and cooling oil and
The first relational expression, the second relational expression and the 3rd relational expression are substituted into by the cooling oil heat energy variable quantity of first clutch infinitesimal to calculate
Show that previous cycle terminates temperature, the temperature of the first steel disc infinitesimal, the first clutch infinitesimal of the rear first friction plate infinitesimal
Cooling oil output temperature；
Wherein, first relational expression is equivalent to the first friction plate infinitesimal for the heat input of first clutch infinitesimal
Heat energy variable quantity, the heat energy variable quantity of the first steel disc infinitesimal and the cooling oil heat energy variable quantity that passes through first clutch infinitesimal
Relational expression；Second relational expression is equivalent to for the heat that the heat input of first clutch infinitesimal is assigned to the first friction plate side infinitesimal
The heat energy variable quantity of the first friction plate infinitesimal and the first friction plate infinitesimal and cooling oil thermal convection current heat-energy transducer variable quantity
Relational expression；3rd relational expression is equivalent to institute for the heat that the heat input of first clutch infinitesimal is assigned to the first steel disc side infinitesimal
State the heat energy variable quantity and the first steel disc infinitesimal of the first steel disc infinitesimal and the relational expression of cooling oil thermal convection current heat-energy transducer variable quantity；
The temperature of the first friction plate infinitesimal after being terminated according to previous cycle and the temperature of the first steel disc infinitesimal are determining
The Current Temperatures of one clutch.
Further, the Current Temperatures of the second clutch infinitesimal are calculated using the thermal model, including：
Determine the heat energy variable quantity of the second friction plate infinitesimal；
Determine the heat energy variable quantity of the second steel disc infinitesimal；
Determine the thermal convection current heat-energy transducer variable quantity of the second friction plate infinitesimal and cooling oil；
Determine the thermal convection current heat-energy transducer variable quantity of the second steel disc infinitesimal and cooling oil；
It is determined that the cooling oil heat energy variable quantity for passing through the second clutch；
By the heat energy variable quantity of the second friction plate infinitesimal, the heat energy variable quantity of the second steel disc infinitesimal, the second friction plate
The thermal convection current heat-energy transducer variable quantity of infinitesimal and cooling oil, the thermal convection current heat-energy transducer variable quantity of the second steel disc infinitesimal and cooling oil and
The 4th relational expression, the 5th relational expression and the 6th relational expression are substituted into by the cooling oil heat energy variable quantity of second clutch to calculate
Previous cycle terminate after the temperature of the second friction plate infinitesimal, the temperature of the second steel disc infinitesimal, second clutch infinitesimal it is cold
Oily output temperature；
Wherein, the 4th relational expression is equivalent to the second friction plate infinitesimal for the heat input of second clutch infinitesimal
Heat energy variable quantity, the heat energy variable quantity of the second steel disc infinitesimal and the cooling oil heat energy variable quantity for passing through second clutch relation
Formula；The heat of the infinitesimal that the 5th relational expression is assigned to the second friction plate side for the heat input of second clutch infinitesimal is equivalent to institute
State the heat energy variable quantity and the second friction plate infinitesimal of the second friction plate infinitesimal and the thermal convection current heat-energy transducer variable quantity of cooling oil
Relational expression；The heat of the infinitesimal that the 6th relational expression is assigned to the second steel disc side for the heat input of second clutch infinitesimal is equivalent to
The pass of the thermal convection current heat-energy transducer variable quantity of the heat energy variable quantity of the second steel disc infinitesimal and the second steel disc infinitesimal and cooling oil
It is formula；
The temperature of the second friction plate infinitesimal after being terminated according to previous cycle and the temperature of the second steel disc infinitesimal are determining
The Current Temperatures of two clutches.
Optionally, the use Jing determines the first clutch and the Current Temperatures of the second clutch and double
The current output temperature of cooling oil of clutch is comprised the following steps performing control action：
By the Current Temperatures of the first clutch, the Current Temperatures of the second clutch, the double clutch
The current sliding wear power of the current output temperature of cooling oil, the current sliding wear power of first clutch and second clutch determine it is double from
The current desired cooling oil flow of clutch；
By current desired cooling oil flow, the dbjective state of the flow switch element of hydraulic control system is determined；
Current Temperatures, the Current Temperatures of the second clutch and the double clutch when the first clutch it is cold
When but having one more than threshold value in the current output temperature three of oil, control double clutch enters protected mode.
Based on this, the invention allows for a kind of temperature real-time monitoring device for wet dual clutch transmission, its bag
Include following steps：
First temperature determination module, at the beginning of it determines initial temperature, the cooling oil of first clutch and second clutch infinitesimal
Beginning output temperature；
Cooling oil flow determining module, it determines the cooling oil flow of double clutch；
Second temperature determining module, it determines the cooling oil input temp of double clutch；
Heat is input into determining module, and it determines the heat input of the first clutch infinitesimal, and the second clutch is micro-
The heat input of unit；
Temperature computation module, it is by the first clutch and the initial temperature and cooling oil of the second clutch infinitesimal
The heat input of flow, the cooling oil initial input temperature of double clutch and initial output temperature, the first clutch infinitesimal
Thermal model is applied to the heat input of second clutch infinitesimal, and the first clutch infinitesimal is calculated using the thermal model
With the Current Temperatures of second clutch infinitesimal, the current output temperature of cooling oil；
3rd temperature determination module, its be based on the first clutch infinitesimal and second clutch infinitesimal Current Temperatures,
The current output temperature of cooling oil determine the Current Temperatures of first clutch and second clutch, double clutch cooling oil it is currently defeated
Go out temperature；
Control module：It uses the first clutch that Jing determines and the Current Temperatures of the second clutch and double
The current output temperature of cooling oil of clutch is performing control action.
Optionally, the first clutch is located at the outside of the second clutch, and the second clutch most inner side is micro-
Unit cooling oil input temp be the double clutch cooling oil input temp, the first clutch most inner side infinitesimal it is cold
Oily input temp determined by the current output temperature of cooling oil of the second clutch outermost infinitesimal, first clutch
Cooling oil current output temperature of the current output temperature of cooling oil of device outermost infinitesimal as double clutch.
Optionally, the first clutch infinitesimal includes the first friction plate infinitesimal and the first steel disc infinitesimal,
The heat input determining module includes：
The heat input module of first clutch, determines the heat input of first clutch；
The heat distribution module of first clutch, heat input determines that the heat input of first clutch is assigned to hot danger
The heat input of position；And determine that the heat input of the hot danger position of first clutch is assigned to the heat input of infinitesimal；Finally
The heat input of the first clutch infinitesimal is assigned to into the both sides of the first friction plate infinitesimal and the first steel disc infinitesimal.
Further, the heat input module of the first clutch includes：
First transmitting torque determining module, it determines the transmitting torque of the first clutch；
First sliding wear power determination module, it is determined the first clutch by the transmitting torque of the first clutch
Sliding wear power；
First heat is input into determining module, and it is determined the first clutch by the sliding wear power of the first clutch
Heat input.
Optionally, the second clutch infinitesimal includes the second friction plate infinitesimal and the second steel disc infinitesimal,
The heat input determining module also includes：
The heat input module of second clutch, determines the heat input of second clutch；
The heat distribution module of second clutch, heat input determines that the heat input of second clutch is assigned to hot danger
The heat input of position；And determine that the heat input of the hot danger position of second clutch is assigned to the heat input of infinitesimal；Finally
The heat input of the second clutch infinitesimal is assigned to into the both sides of the second friction plate infinitesimal and the second steel disc infinitesimal.
Further, the heat input module of the second clutch includes：
Second transmitting torque determining module, it determines the transmitting torque of the second clutch；
Second sliding wear power determination module, it is determined the second clutch by the transmitting torque of the second clutch
Sliding wear power；
Heat is input into determining module, and it is determined the heat of the second clutch by the sliding wear power of the second clutch
Amount input.
The real-time monitoring of wet dual clutch transmission temperature is further, and the temperature computation module includes：
First heat energy variable quantity module, its determine respectively the heat energy variable quantity of the first friction plate infinitesimal, described first
The cooling oil heat energy variable quantity of the heat energy variable quantity of steel disc infinitesimal and the first clutch infinitesimal；
First thermal convection current heat-energy transducer variable quantity module, it determines that respectively the first friction plate infinitesimal is hot right with cooling oil
The thermal convection current heat-energy transducer variable quantity of stream heat-energy transducer variable quantity and the first steel disc infinitesimal and cooling oil；
First temperature computation module, it is by the heat energy variable quantity of the first friction plate infinitesimal, the heat of the first steel disc infinitesimal
The heat of the thermal convection current heat-energy transducer variable quantity, the first steel disc infinitesimal and cooling oil of energy variable quantity, the first friction plate infinitesimal and cooling oil
Heat convection energy variable quantity and pass through first clutch infinitesimal cooling oil heat energy variable quantity described in the first temperature computation module
Calculate the temperature of the first friction plate infinitesimal after previous cycle terminates, the temperature of the first steel disc infinitesimal, cooling oil output
Temperature；
Wherein, first relational expression is equivalent to the first friction plate infinitesimal for the heat input of first clutch infinitesimal
Heat energy variable quantity, the heat energy variable quantity of the first steel disc infinitesimal and the cooling oil heat energy variable quantity that passes through first clutch infinitesimal
Relational expression；Second relational expression is equivalent to for the heat that the heat input of first clutch infinitesimal is assigned to the first friction plate side infinitesimal
The heat energy variable quantity of the first friction plate infinitesimal and the first friction plate infinitesimal and cooling oil thermal convection current heat-energy transducer variable quantity
Relational expression；3rd relational expression is equivalent to institute for the heat that the heat input of first clutch infinitesimal is assigned to the first steel disc side infinitesimal
State the heat energy variable quantity and the first steel disc infinitesimal of the first steel disc infinitesimal and the relational expression of cooling oil thermal convection current heat-energy transducer variable quantity；
3rd temperature determination module includes the Current Temperatures determining module of first clutch, and it is tied according to previous cycle
The temperature of the temperature of the first friction plate infinitesimal and the first steel disc infinitesimal is determining the Current Temperatures of first clutch after beam.
Further, the temperature computation module also includes：
Second heat energy variable quantity module, its determine respectively the heat energy variable quantity of the second friction plate infinitesimal, described second
The cooling oil heat energy variable quantity of the heat energy variable quantity of steel disc infinitesimal and the second clutch infinitesimal；
Second thermal convection current heat-energy transducer variable quantity module, it determines that respectively the second friction plate infinitesimal is hot right with cooling oil
The thermal convection current heat-energy transducer variable quantity of stream heat-energy transducer variable quantity and the second steel disc infinitesimal and cooling oil；
Second temperature computing module, it is by the heat energy variable quantity of the second friction plate infinitesimal, the heat of the second steel disc infinitesimal
The heat of the thermal convection current heat-energy transducer variable quantity, the second steel disc infinitesimal and cooling oil of energy variable quantity, the second friction plate infinitesimal and cooling oil
Heat convection energy variable quantity and pass through second clutch cooling oil heat energy variable quantity described in second temperature computing module calculate
Show that previous cycle terminates temperature, the temperature of the second steel disc infinitesimal, the cooling oil output temperature of the rear second friction plate infinitesimal；
Wherein, the 4th relational expression is equivalent to the second friction plate infinitesimal for the heat input of second clutch infinitesimal
Heat energy variable quantity, the heat energy variable quantity of the second steel disc infinitesimal and the cooling oil heat energy variable quantity for passing through second clutch relation
Formula；The heat of the infinitesimal that the 5th relational expression is assigned to the second friction plate side for the heat input of second clutch infinitesimal is equivalent to institute
State the heat energy variable quantity and the second friction plate infinitesimal of the second friction plate infinitesimal and the thermal convection current heat-energy transducer variable quantity of cooling oil
Relational expression；The heat of the infinitesimal that the 6th relational expression is assigned to the second steel disc side for the heat input of second clutch infinitesimal is equivalent to
The pass of the thermal convection current heat-energy transducer variable quantity of the heat energy variable quantity of the second steel disc infinitesimal and the second steel disc infinitesimal and cooling oil
It is formula；
3rd temperature determination module also includes second clutch Current Temperatures determining module, and it is tied according to previous cycle
The temperature of the temperature of the second friction plate infinitesimal and the second steel disc infinitesimal is determining the Current Temperatures of second clutch after beam.
Optionally, the temperature real-time monitoring device also includes Current Temperatures control module, and it uses the described of Jing determinations
The current output temperature of cooling oil of the Current Temperatures and double clutch of first clutch and the second clutch is performing control
Braking is comprised the following steps：
By the Current Temperatures of the first clutch, the Current Temperatures of the second clutch, the double clutch
The current sliding wear power of the current output temperature of cooling oil, the current sliding wear power of first clutch and second clutch determine it is double from
The current desired cooling oil flow of clutch；
By current desired cooling oil flow, the dbjective state of the flow switch element of hydraulic control system is determined；
Current Temperatures, the Current Temperatures of the second clutch and the double clutch when the first clutch it is cold
When but having one more than threshold value in the current output temperature three of oil, control double clutch enters protected mode.
Implement the temperature method of real-time and device for wet dual clutch transmission of the embodiment of the present invention, with such as
Lower beneficial effect：
The Current Temperatures of clutch are mainly calculated the present invention the current output temperature of clutch by thermal model,
Can realize to wet-type dual-clutch internal temperature real-time monitoring, at the same time it can also the current output temperature of clutch is controlled
The input condition of the cooling oil of clutch processed, additionally it is possible to fed back on supervising device according to monitoring result.
Description of the drawings
Fig. 1 is the flow chart according to wet-type dual-clutch temperature method of real-time of the present invention；
Fig. 2 is the structural representation according to wet-type dual-clutch of the present invention.
Description of reference numerals：
1st, first clutch；2nd, second clutch；3rd, cooling oil duct；4th, the first friction plate；5th, the first steel disc；6th, second rub
Pad；7th, the second steel disc；8th, the cooling oil of porch；9th, the cooling oil in exit；10th, the work surface of first clutch；11st,
The work surface of two clutches.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, the temperature method of real-time for wet dual clutch transmission of the present invention, its step is as follows：
①：Start, judge whether first operation；
②：According to the previous circulating temperature shape that first step result selects to carry out initializing state of temperature amount or reading storage
State amount；
③：It is determined that into the cooling oil flow of cooling oil duct 3 between double clutch friction plate and steel disc；
④：Determine the temperature of the cooling oil 8 of wet-type dual-clutch casing box cooling oil temperature and porch；
⑤：Calling model parameter：Including hot relevant parameter and clutch configuration parameter；
⑥：It is determined that being input into from first clutch 1 and the heat of second clutch 2；
⑦：Determine that first clutch 1 and second clutch 2 pay close attention to the hot danger position of the i.e. clutch in position；
⑧：Determine that first clutch 1 and second clutch 2 pay close attention to the hot danger position finite element of the i.e. clutch in position
Process；
⑨：Determine that first clutch 1 and second clutch 2 pay close attention to the hot danger position infinitesimal heat of the i.e. clutch in position
Amount input；
⑩：Determine the state of temperature of infinitesimal using thermal model computing；
Based on the state of temperature of infinitesimal determine first clutch 1 and the internal temperature state of second clutch 2 and it is double from
Clutch exports oil temperature state；
Control action is performed according to the state of temperature of output；
End program terminates this and circulates and enter to circulate next time.
The parameter that the present invention need to be related to is as follows：
Pump speed noil_pump, hydraulic control valve plate electromagnetic valve current state Ivbs(k-1) (alternatively other controllable executions
Element), cooling oil temperature T in casing boxoil；
Clutch housing case cooling oil temperature Toil, porch cooling oil 8 temperature Toil_IN；
Convection transfer rate between the friction plate and cooling oil of double clutch is respectively hoilMC1、hoilMC2, double clutch
Convection transfer rate between steel disc and cooling oil is respectively hoilGC1、hoilGC2, friction plate pyroconductivity λM, steel disc pyroconductivity
λG, friction plate specific heat capacity CM, steel disc specific heat capacity CG, cooling oil specific heat capacity Coil, double clutch friction tablet quality be respectively mMC1、
mMC2, double clutch steel disc quality be respectively mGC1、mGC2, friction plate density pM, steel disc density pG, cooling oil density poil, first
Contact area A of work surface 10 of clutchC1, contact area A of work surface 11 of second clutchC2, the infinitesimal of the first friction plate 4
The perimeter of section Girth of the cooling oil duct 3 and infinitesimal of the first steel disc 5 betweenoilDuctC1, the infinitesimal and the second steel disc of the second friction plate 6
The perimeter of section Girth of cooling oil duct 3 between 7 infinitesimaloilDuctC2, the infinitesimal of the infinitesimal of the first friction plate 4 and the first steel disc 5 it
Between length l of cooling oil duct 3oilDuctC1, the length of cooling oil duct 3 between the infinitesimal of the second friction plate 6 and the infinitesimal of the second steel disc 7
loilDuctC2；
The footprint pressure P of first clutch 1C1, second clutch 2 footprint pressure PC2, first clutch work surface 10
CoefficientoffrictionμC1, second clutch the coefficientoffrictionμ of work surface 11C2, first clutch 1 rotating speed nC1, second clutch 2
Rotating speed nC2, double clutch input shaft rotating speed nEng, first clutch contact area A of work surface 10C1, the work of second clutch
Contact area A of face 11C2；
The work surface number z of first clutch 1C1, the work surface number z of second clutch 2C2；First clutch 1 pays close attention to position
Infinitesimal number N, second clutch 2 pays close attention to position infinitesimal number M, micro- internal radius and external diameter rx_in、rx_out, first clutch 1
Internal diameter and external diameter rC1_in、rC1_out；
Infinitesimal state of temperature T when the friction plate of double clutch starts with steel disc this cycle periodxC1MB(k)、TxC1GB(k)、
TyC2GB(k)、TyC2GBInfinitesimal state of temperature T at the end of (k), the friction plate of double clutch and steel disc this cycle periodxC1MA(k)、
TxC1GA(k)、TyC2GA(k)、TyC2GA(k)；K referred under current state, k-th cycle period.
The state of temperature of the cooling oil 9 in the entrance of cooling oil duct 3 and exit between double clutch infinitesimal inner attrition piece and steel disc：
Txoil_INC1(k)、Txoil_OUTC1(k)、Tyoil_INC2(k)、Tyoil_OUTC2(k)；
Double clutch friction tablet quality m in infinitesimal annulusxM、myM, the steel disc quality of the double clutch in infinitesimal annulus
mxG、myG；
The internal temperature T of first clutch 1C1Iner, the internal temperature T of second clutch 2C2Iner, the output of double clutch
Oil temperature Toil_OUT；
Demand cooling oil flow Lneed, electromagnetic valve switch state Ivbs(k), clutch Thermal protection state FlagCluPct.
The present invention needs the inequality being related to：
There is sliding wear condition：Clutch rotational speed and Clutch input shaft speed discrepancy △ n ＞ threshold values；
Without sliding wear condition：Clutch rotational speed and Clutch input shaft speed discrepancy △ n≤threshold value.
The specific works of the present invention are as follows：
S1, beginning, according to initial operating condition and circular flow condition corresponding module is entered, to determine whether as first fortune
OK：
First service condition：Vehicle is unlocked or car door opening or insertion ignition key or other in response to being satisfied
Actual conditions, is otherwise cyclic process, in vehicle and the power train course of work, program real-time circulation operation always；
Initial temperature state：Wherein, first clutch infinitesimal includes the first friction plate infinitesimal and the first steel disc infinitesimal, second
Clutch infinitesimal includes the second friction plate infinitesimal and the second steel disc infinitesimal；By program assignment or the first clutch infinitesimal for calculating
Initial output temperature (it includes the initial output temperature of the initial output temperature of the first friction plate infinitesimal and the first steel disc infinitesimal
Degree), (it includes the initial output temperature and the second steel disc of the second friction plate infinitesimal to the initial output temperature of second clutch infinitesimal
The initial output temperature of infinitesimal), the initial output temperature of the cooling oil of first clutch infinitesimal and second clutch infinitesimal (cools down
Oil duct output temperature) it is respectively：
TxC1MA(0)、TxC1GA(0)、TyC2MA(0)、TyC2GA(0)、Txoil_OUTC1(0)、Tyoil_OUTC2(0)；
Or previous circulating temperature quantity of state：The first clutch infinitesimal that goes out of previous cycle calculations of controller storage it is initial
Output temperature (it includes the initial output temperature of the initial output temperature of the first friction plate infinitesimal and the first steel disc infinitesimal), second
Clutch infinitesimal initial output temperature (it include the initial output temperature of the second friction plate infinitesimal and the second steel disc infinitesimal just
Beginning output temperature), the initial output temperature of the cooling oil of first clutch infinitesimal and second clutch infinitesimal (i.e. cooling oil duct output
Temperature) it is respectively：
TxC1MA(k-1)、TxC1GA(k-1)、TyC2MA(k-1)、TyC2GA(k-1)、Txoil_OUTC1(k-1)、Tyoil_OUTC2(k-1)。
S2, the cooling oil flow L for determining double clutchcross：
By the cooling oil flow L of cooling oil duct 3 between the friction plate and steel disc of double clutchcross(i.e. double clutch
Cooling oil flow) function L can be passed throughcross=F (noil_pump,Ivbs(k-1),Toil) determine, the function is special by hydraulic control valve plate
Property is determined and is given.
S3, the cooling oil input temp T for determining double clutchoil：
Oil temperature sensor in by being arranged in double-clutch speed changer oil sump can measure that to obtain clutch housing case cold
Oily temperature Toil, the cooling oil 8 of porch be directly drawn from oil sump by oil pump after enter, therefore can will be cold
But oil temperature (i.e. the cooling oil input temp of the double clutch) T of the porch of oil duct 3oil_INThe temperature being equivalent in clutch oil drain pan
The temperature that degree sensor measurement is obtained.
S4, calling model relevant parameter, are that thermal model operation is prepared, and parameter includes hot relevant parameter and clutch characteristics
Parameter：
Hot relevant parameter：Friction plate pyroconductivity λM, steel disc pyroconductivity λG, friction plate specific heat capacity CM, steel disc specific heat capacity
CG, cooling oil specific heat capacity Coil, double clutch friction tablet quality be respectively mMC1、mMC2, double clutch steel disc quality be respectively
mGC1、mGC2, friction plate density pM, steel disc density pG, cooling oil density poil, the convection current between double clutch steel disc and cooling oil changes
Hot coefficient is respectively hoilGC1、hoilGC2, wherein, the convection transfer rate h between clutch steel disc and cooling oiloilGC1、hoilGC2
By formula h=Nu λ cdIt is determined that, Nu is Nu Saier coefficients, and general expression is Nu=BRen·Prm, Re is Reynolds number, Pr
For Prandtl constant, Nu Saier coefficients Nu can be by parameter B, n, m optimization determinations；cdFor equivalent diameter, when have sliding wear condition into
Immediately, double clutch cooling procedure is the cooling of sweeping flat board, and equivalent diameter takes cooling oil sweeping length in cooling oil duct 3, works as nothing
When sliding wear condition is set up, double clutch cooling procedure is forced convertion cooling in pipe, and it is straight that equivalent diameter takes the equivalent of cooling oil duct 3
Footpath；
The characteristic parameter of clutch：Contact area A of work surface 10 of first clutchC1, the work surface 11 of second clutch
Contact area AC2, the perimeter of section of cooling oil duct 3 between first friction plate 4 and the first steel disc 5 of first clutch 1
GirthoilDuctC1, the perimeter of section of cooling oil duct 3 between second friction plate 6 and the second steel disc 7 of second clutch 2
GirthoilDuctC2, length l of cooling oil duct 3 between first friction plate 4 and the first steel disc 5 of first clutch 1oilDuctC1, second
Length l of cooling oil duct 3 between second friction plate 6 and the second steel disc 7 of clutch 2oilDuctC2。
S5, the first heat input q for determining the first clutch 1fC1It is defeated with the heat from the second clutch 2
Enter qfC2：
Q is input into the heat of first clutch 1fC1It is determined that as a example by the (determination process one of the heat of second clutch 2 input
Sample),
First：Determine transmitting torque M of first clutch 1C1：
When there is sliding wear condition to set up, MC1=PC1·μC1·AC1
When setting up without sliding wear condition, MC1Take transmission input shaft input torque；
Secondly：Determine the sliding wear power P of first clutch 1fC1=2 π MC1·|nC1-nEng|/60；
Afterwards：Determine the heat input q of first clutch 1fC1：Wherein dt is cycle period
Finally：Determine the heat input q of first clutch 1fC1Distribution.The heat that the sliding wear of first clutch 1 is finally produced is divided
Be fitted on the first friction plate 4 and the both sides of the first steel disc 5, the input of the heat of first clutch 1 the first friction plate 4 and the first steel disc 5 it
Between the relations of distribution be：qfC1M=1/ (1+s) qfC1, qfC1G=s/ (1+s) qfC1, wherein s is heat distribution coefficient, byIt is determined that；
The heat input q of second clutch 2fC2It is determined that similarly.
The determination of the hot danger position of S6, first clutch 1 and second clutch 2；
First clutch 1 and second clutch 2 pay close attention to the position i.e. heat of first clutch 1 and second clutch 2
Danger position determines.As shown in Fig. 2 be typically due to wet-type dual-clutch be generally individually made up of multiplate clutch, relative to being in
The friction plate and steel disc of the double clutch of midline position, friction plate and steel disc and the double clutch pressure of the double clutch in periphery
In disk and double clutch circumferential cavity there is the heat exchange of the forms such as extra conduction of heat in coolant so that double clutches of periphery
The friction plate of device is relatively low with steel disc temperature compared to the friction plate of centre position double clutch with steel disc temperature, therefore will can be in
The work surface in multi-disc wet clutch centre position exists as the i.e. hot danger position in position, such as first clutch 1 is paid close attention to
10 work surfaces, then can be using the 5th, 6 work surfaces as paying close attention to position；
In addition to the above methods, hot danger position also can be determined by additive method such as CAE simulation analysis statistical result.
S7, clutch are paid close attention to the finite element of position (hot danger position) and are determined；
In view of automatic transmission in operation real time temperature inspection software burden and the friction plate and steel disc of double clutch
Rotary motion row, several micro- annulus units are divided into by the work surface of double clutch along radial direction, and first clutch 1 is radially
It is divided into N parts, second clutch 2 to be radially divided into M parts, N, M value can determine by optimizing, between here is per separate bit cells
Radial span can be by optimized distribution, the infinitesimal that radial span might not be divided into equal.
S8, the infinitesimal heat input for determining double clutch：
By taking first clutch infinitesimal as an example (determination process of the heat input of second clutch infinitesimal is the same)：
Wherein, first clutch infinitesimal includes the first friction plate infinitesimal and the first steel disc infinitesimal；
It is assigned to the heat input q paid close attention on work surface of first clutch 1fC1I=qfC1/zC1；zC1Refer to first from
The friction pair quantity of clutch 1；
It is assigned to the input of infinitesimal heat：qxfC1=qfC1I·(rx_out 3-rx_in 3)/(rC1_out 3-rC1_in 3)；rx_outRepresent the
The infinitesimal radius in the exit of cooling oil duct 3 of one clutch 1, rx_inRepresent first clutch 1 the porch of cooling oil duct 3 it is micro-
First radius, rC1_outRepresent the radius in the exit of cooling oil duct 3 of first clutch 1, rC1_inRepresent the cooling of first clutch 1
The radius of the porch of oil duct 3；
Finally：Determine distribution of the first clutch heat input in infinitesimal.The heat that clutch sliding wear is finally produced is divided
Friction plate and steel disc both sides are fitted on, the heat of first clutch 1 is input between the first friction plate infinitesimal and the first steel disc infinitesimal
The relations of distribution be：qxfC1M=1/ (1+s) qxfC1, qxfC1G=s/ (1+s) qxfC1, wherein s is heat distribution coefficient, byIt is determined that.
S9, determine infinitesimal boundary condition and iterative relation：
Boundary condition：Cooling oil temperature (the i.e. clutch at the oil-passage inlet between front clutch infinitesimal friction plate and steel disc
The cooling oil input temp of device infinitesimal) work as front clutch infinitesimal and near the infinitesimal clutch friction plate and steel disc of inner side with neighbouring
Between oil passage outlet at cooling oil temperature relation：
Txoil_INC1(k)=Tx-1oil_OUTC1(k)；
Tyoil_INC2(k)=Ty-1oil_OUTC2(k)；
In the preferred embodiment, first clutch 1 is located at the outside of second clutch 2, and the most inner side of second clutch 2 is micro-
The cooling oil input temp of unit is the cooling oil input temp of double clutch, and the cooling oil of the most inner side infinitesimal of first clutch 1 is defeated
Enter temperature to be determined by the current output temperature of cooling oil of the outermost infinitesimal of second clutch 2, the outermost infinitesimal of first clutch 1
The current output temperature of cooling oil as double clutch the current output temperature of cooling oil.Wherein, the most inner side of first clutch 1 is micro-
The cooling oil output temperature of unit is determined that it determines that relation is by the outermost cooling oil output temperature of second clutch 2：(tool
Body parameter can be determined by clutch characteristics and parameter optimization) (x=1, y=M)
Txoil_INC1(k)=Average (Tyoil_OUTC2(k),Tyoil_OUTC2(k-1)....Tyoil_OUTC2(k-a))；A is
Gap between one clutch 1 and second clutch 2 is converted to the quantity of infinitesimal；
Iterative relation：The friction plate of double clutch is with steel disc (such as：First friction plate 4 of first clutch 1 and the first steel disc
6, the second friction plate 5 of second clutch 2 and the second steel disc 7), in previous cycle cycle started temperature state and previous circulating cycle
Phase end temp state relation：
TxC1MA(k-1)=TxC1MB(k)；TxC1GA(k-1)=TxC1GB(k)；
TyC2MA(k-1)=TyC2MB(k)；TyC2GA(k-1)=TyC2GB(k)。
S10, the current temperature status that double clutch infinitesimal is determined using thermal model；
(the determination of the state of temperature of the infinitesimal of the hot danger position of second clutch 2 by taking first clutch infinitesimal as an example
Journey is the same)：
Determine the first friction plate heat energy variable quantity of first clutch infinitesimal in current period：
△qxM(k)=mxM·CM·(TxC1MA(k)-TxC1MB(k)) (1)
Determine the first steel disc heat energy variable quantity of first clutch infinitesimal in current period：
△qxG(k)=mxG·CG·(TxC1GA(k)-TxC1GB(k)) (2)
Determine the thermal convection current heat-energy transducer variable quantity of the first friction plate infinitesimal and cooling oil in current period：
Determine the thermal convection current heat-energy transducer variable quantity of the first steel disc infinitesimal and cooling oil in current period：
When there is sliding wear condition to set up, AxIt is defined as clutch face contact area：
AxC1=π (rx_out 2-rx_in 2)；
When setting up without sliding wear condition, AxIt is defined as cooling oil path wetting areas：
AxcrossC1=GirthxoilDuctC1·lxoildcutC1；
Determine in current period by the cooling oil heat energy variable quantity of first clutch infinitesimal：
△qxoilcross=Lcross·ρoil·Coil·dt·[(Txoil_OUTC1(k)+Txoil_OUTC1(k-1))/2-
(Txoil_INC1(k)+Txoil_INC1(k-1))/2]++ρoil·Coil·lxoilDuctC1·AxductSect[(Txoil_OUTC1(k)+Txoil_INC1
(k))/2-(Txoil_OUTC1(k-1)+Txoil_INC1(k-1))/2]
(5)
It is determined that energy relationship in whole heat exchanging process：
I. the heat input of first clutch infinitesimal is eventually converted into the first friction plate infinitesimal, the first steel disc infinitesimal, passes through
The cooling oil heat energy variable quantity of first clutch infinitesimal：
qxfC1(k)=△ qxM(k)+△qxG(k)+△qxoilcross(k) (6)
II. the heat input of first clutch infinitesimal is assigned to the first friction plate infinitesimal side heat flow direction：
qxfC1M(k)=△ qxM(k)+△qxMoil(k) (7)
III. the heat input of first clutch infinitesimal is assigned to the first steel disc infinitesimal side heat flow direction：
qxfC1G(k)=△ qxG(k)+△qxGoil(k) (8)
By above-mentioned (1)~(8) equation, simultaneous is simultaneously solved, after determining that first clutch infinitesimal previous cycle terminates, first
Temperature T of friction plate infinitesimalxC1MA(k), temperature T of the first steel disc infinitesimalxC1GAThe cooling oil of (k), first clutch infinitesimal output
Temperature Txoil_OUTC1(k)；
S11, the state of temperature of infinitesimal based on determined by previous step determine the Current Temperatures of first clutch 1, second
The Current Temperatures of clutch 2 and the current output temperature for exporting cooling oil；
The current temperature status for determining first clutch 1 are
TC1=max (TxC1MA(k),TxC1GA(k)), wherein x=1,2,3....N；
The current temperature status for determining second clutch 2 are
TC2=max (TyC2MA(k),TyC2GA(k)), wherein y=1,2,3.....M；
The current output temperature state of cooling oil for determining double clutch is Toil_OUT=Txoil_OUTC1(k), x=M.
The Current Temperatures T of S12, the first clutch 1 determined using Jing and the second clutch 2C1(k)、TC2(k)
And the current output temperature T of cooling oil of double clutchoil_OUT(k)To perform control action.
I. it is calculated in storage above-mentioned steps
TxC1MA(k)、TxC1GA(k)、TyC2MA(k)、TyC2GA(k)、Txoil_OUTC1(k)、Tyoil_OUTC2(k)；
II. output TC1、TC2、Toil_OUT, can be used for other programs or instrumental panel temperature show and safety prompt function etc.；
III. according to current TC1、TC2、Toil_OUT、Toil、PfC1And PfC2It is determined that current wet clutch mechanism demand
Cooling oil flow Lneed, it is determined that TC1、TC2、Toil_OUT、Toil、PfC1And PfC2Afterwards, can be by the hot relation table of inquiry balance
L can be drawnneed, further, it is also possible to such as determine L by the characteristic of clutch otherwiseneed；
. according to LneedAnd hydraulic control system characteristic, determine the flow switch element such as electromagnetic valve in hydraulic control system
Dbjective state Ivbs(k) or other controllable execution component object states；
V. according to the T of storageC1、TC2、Toil_OUTWhether it is more than certain threshold values, judges whether wet dual clutch transmission needs
Protected mode is entered, clutch Thermal protection state FlagCluPct is sent, it is ensured that double-clutch mechanism will not surprisingly fail；
VI. according to the T of storageC1、TC2、Toil_OUTDetermine the coefficientoffrictionμ of clutch friction plate friction materialC1、μC2, and
Storage.
Finally, according to the termination condition for meeting, either cycling condition terminates program or circular flow program.
Based on this, the invention allows for a kind of real-time monitoring device of wet dual clutch transmission temperature, it include with
Lower step：
First temperature determination module, at the beginning of it determines initial temperature, the cooling oil of first clutch and second clutch infinitesimal
Beginning output temperature；
Cooling oil flow determining module, it determines the cooling oil flow of double clutch；
Second temperature determining module, it determines the cooling oil input temp of double clutch；
Heat is input into determining module, and it determines the heat input of the first clutch infinitesimal, and the second clutch is micro-
The heat input of unit；
Temperature computation module, it is by the first clutch and the initial temperature and cooling oil of the second clutch infinitesimal
The heat input of flow, the cooling oil initial input temperature of double clutch and initial output temperature, the first clutch infinitesimal
Thermal model is applied to the heat input of second clutch infinitesimal, and the first clutch infinitesimal is calculated using the thermal model
With the Current Temperatures of second clutch infinitesimal, the current output temperature of cooling oil；
3rd temperature determination module, its be based on the first clutch infinitesimal and second clutch infinitesimal Current Temperatures,
The current output temperature of cooling oil determine the Current Temperatures of first clutch and second clutch, double clutch cooling oil it is currently defeated
Go out temperature；
Control module：It uses the first clutch that Jing determines and the Current Temperatures of the second clutch and double
The current output temperature of cooling oil of clutch is performing control action.
Optionally, in the preferred embodiment, the first clutch is located at the outside of the second clutch, and described the
Two clutches most inner side infinitesimal cooling oil input temp be the double clutch cooling oil input temp, first clutch
Device most inner side infinitesimal cooling oil input temp by the second clutch outermost infinitesimal the current output temperature institute of cooling oil
It is determined that, the current output temperature of cooling oil of the first clutch outermost infinitesimal is currently exported as the cooling oil of double clutch
Temperature.
Optionally, the first clutch infinitesimal includes the first friction plate infinitesimal and the first steel disc infinitesimal,
The heat input determining module includes：
The heat input module of first clutch, determines the heat input of first clutch；
The heat distribution module of first clutch, heat input determines that the heat input of first clutch is assigned to hot danger
The heat input of position；And determine that the heat input of the hot danger position of first clutch is assigned to the heat input of infinitesimal；Finally
The heat input of the first clutch infinitesimal is assigned to into the both sides of the first friction plate infinitesimal and the first steel disc infinitesimal.
Further, the heat input module of the heat input heat input first clutch includes：
First transmitting torque determining module, it determines the transmitting torque of the first clutch；
First sliding wear power determination module, it is determined the first clutch by the transmitting torque of the first clutch
Sliding wear power；
First heat is input into determining module, and it is determined the first clutch by the sliding wear power of the first clutch
Heat input.
Optionally, the second clutch infinitesimal includes the second friction plate infinitesimal and the second steel disc infinitesimal,
The heat input determining module also includes：
The heat input module of second clutch, determines the heat input of second clutch；
The heat distribution module of second clutch, heat input determines that the heat input of second clutch is assigned to hot danger
The heat input of position；And determine that the heat input of the hot danger position of second clutch is assigned to the heat input of infinitesimal；Finally
The heat input of the second clutch infinitesimal is assigned to into the both sides of the second friction plate infinitesimal and the second steel disc infinitesimal.
Further, the heat input module heat input heat input of the second clutch includes：
Second transmitting torque determining module, it determines the transmitting torque of the second clutch；
Second sliding wear power determination module, it is determined the second clutch by the transmitting torque of the second clutch
Sliding wear power；
Heat is input into determining module, and it is determined the heat of the second clutch by the sliding wear power of the second clutch
Amount input.
The real-time monitoring of wet dual clutch transmission temperature is further, and the temperature computation module includes：
First heat energy variable quantity module, its determine respectively the heat energy variable quantity of the first friction plate infinitesimal, described first
The cooling oil heat energy variable quantity of the heat energy variable quantity of steel disc infinitesimal and the first clutch infinitesimal；
First thermal convection current heat-energy transducer variable quantity module, it determines that respectively the first friction plate infinitesimal is hot right with cooling oil
The thermal convection current heat-energy transducer variable quantity of stream heat-energy transducer variable quantity and the first steel disc infinitesimal and cooling oil；
First temperature computation module, it is by the heat energy variable quantity of the first friction plate infinitesimal, the heat of the first steel disc infinitesimal
The heat of the thermal convection current heat-energy transducer variable quantity, the first steel disc infinitesimal and cooling oil of energy variable quantity, the first friction plate infinitesimal and cooling oil
Heat convection energy variable quantity and pass through first clutch infinitesimal cooling oil heat energy variable quantity described in the first temperature computation module
Calculate the temperature of the first friction plate infinitesimal after previous cycle terminates, the temperature of the first steel disc infinitesimal, cooling oil output
Temperature；
Wherein, first relational expression is equivalent to the first friction plate infinitesimal for the heat input of first clutch infinitesimal
Heat energy variable quantity, the heat energy variable quantity of the first steel disc infinitesimal and the cooling oil heat energy variable quantity that passes through first clutch infinitesimal
Relational expression；Second relational expression is equivalent to for the heat that the heat input of first clutch infinitesimal is assigned to the first friction plate side infinitesimal
The heat energy variable quantity of the first friction plate infinitesimal and the first friction plate infinitesimal and cooling oil thermal convection current heat-energy transducer variable quantity
Relational expression；3rd relational expression is equivalent to institute for the heat that the heat input of first clutch infinitesimal is assigned to the first steel disc side infinitesimal
State the heat energy variable quantity and the first steel disc infinitesimal of the first steel disc infinitesimal and the relational expression of cooling oil thermal convection current heat-energy transducer variable quantity；
3rd temperature determination module includes the Current Temperatures determining module of first clutch, and it is tied according to previous cycle
The temperature of the temperature of the first friction plate infinitesimal and the first steel disc infinitesimal is determining the Current Temperatures of first clutch after beam.
Further, the temperature computation module also includes：
Second heat energy variable quantity module, its determine respectively the heat energy variable quantity of the second friction plate infinitesimal, described second
The cooling oil heat energy variable quantity of the heat energy variable quantity of steel disc infinitesimal and the second clutch infinitesimal；
Second thermal convection current heat-energy transducer variable quantity module, it determines that respectively the second friction plate infinitesimal is hot right with cooling oil
The thermal convection current heat-energy transducer variable quantity of stream heat-energy transducer variable quantity and the second steel disc infinitesimal and cooling oil；
Second temperature computing module, it is by the heat energy variable quantity of the second friction plate infinitesimal, the heat of the second steel disc infinitesimal
The heat of the thermal convection current heat-energy transducer variable quantity, the second steel disc infinitesimal and cooling oil of energy variable quantity, the second friction plate infinitesimal and cooling oil
Heat convection energy variable quantity and pass through second clutch cooling oil heat energy variable quantity described in second temperature computing module calculate
Show that previous cycle terminates temperature, the temperature of the second steel disc infinitesimal, the cooling oil output temperature of the rear second friction plate infinitesimal；
Wherein, the 4th relational expression is equivalent to the second friction plate infinitesimal for the heat input of second clutch infinitesimal
Heat energy variable quantity, the heat energy variable quantity of the second steel disc infinitesimal and the cooling oil heat energy variable quantity for passing through second clutch relation
Formula；The heat of the infinitesimal that the 5th relational expression is assigned to the second friction plate side for the heat input of second clutch infinitesimal is equivalent to institute
State the heat energy variable quantity and the second friction plate infinitesimal of the second friction plate infinitesimal and the thermal convection current heat-energy transducer variable quantity of cooling oil
Relational expression；The heat of the infinitesimal that the 6th relational expression is assigned to the second steel disc side for the heat input of second clutch infinitesimal is equivalent to
The pass of the thermal convection current heat-energy transducer variable quantity of the heat energy variable quantity of the second steel disc infinitesimal and the second steel disc infinitesimal and cooling oil
It is formula；
3rd temperature determination module also includes second clutch Current Temperatures determining module, and it is tied according to previous cycle
The temperature of the temperature of the second friction plate infinitesimal and the second steel disc infinitesimal is determining the Current Temperatures of second clutch after beam.
Optionally, described device also include Current Temperatures control module, its use Jing determine the first clutch and
The Current Temperatures of the second clutch and the current output temperature of the cooling oil of double clutch come perform control action include with
Lower step：
By the Current Temperatures of the first clutch, the Current Temperatures of the second clutch, the double clutch
The current sliding wear power of the current output temperature of cooling oil, the current sliding wear power of first clutch and second clutch determine it is double from
The current desired cooling oil flow of clutch；
By current desired cooling oil flow, the dbjective state of the flow switch element of hydraulic control system is determined；
Current Temperatures, the Current Temperatures of the second clutch and the double clutch when the first clutch it is cold
When but having one more than threshold value in the current output temperature three of oil, control double clutch enters protected mode.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvement and deformation can also be made, these are improved and deformation is also considered as
Protection scope of the present invention.
Claims (20)
1. a kind of temperature method of real-time for wet dual clutch transmission, it is characterised in that comprise the following steps：
Determine initial temperature, the initial output temperature of cooling oil of first clutch infinitesimal and second clutch infinitesimal；
Determine the cooling oil flow of double clutch；
Determine the cooling oil input temp of double clutch；
Determine that the heat input of the first clutch infinitesimal and the heat of the second clutch infinitesimal are input into；
By the initial temperature of the first clutch infinitesimal and second clutch infinitesimal, the initial output temperature of cooling oil and double clutches
The cooling oil flow of device, cooling oil input temp, the heat input of the first clutch infinitesimal and second clutch infinitesimal
Heat input is applied to thermal model, and calculates the first clutch infinitesimal and second clutch infinitesimal using the thermal model
The current output temperature of Current Temperatures, cooling oil；
Determine based on the Current Temperatures of the first clutch infinitesimal and second clutch infinitesimal, the current output temperature of cooling oil
The Current Temperatures of one clutch and second clutch, the current output temperature of the cooling oil of double clutch；
The first clutch determined using Jing and the Current Temperatures and the cooling oil of double clutch of the second clutch
Current output temperature is performing control action.
2. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 1, it is characterised in that described
First clutch is located at the outside of the second clutch, and the cooling oil input temp of the second clutch most inner side infinitesimal is
The cooling oil input temp of the double clutch, the cooling oil input temp of the first clutch most inner side infinitesimal is by described the
The current output temperature of cooling oil of two clutch outermost infinitesimals determined, the cooling oil of the first clutch outermost infinitesimal
Cooling oil current output temperature of the current output temperature as double clutch.
3. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 1 or 2, it is characterised in that
The first clutch infinitesimal includes the first friction plate infinitesimal and the first steel disc infinitesimal；
Determine that the heat of the first clutch infinitesimal includes the step of input：
Determine the heat input of first clutch；
The heat input for determining first clutch is assigned to the heat input of hot danger position；
The heat input for determining the hot danger position of first clutch is assigned to the heat input of infinitesimal；
The heat input of the first clutch infinitesimal is assigned to into the two of the first friction plate infinitesimal and the first steel disc infinitesimal
Side.
4. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 3, it is characterised in that
The heat input of the first clutch is obtained by following steps：
Determine the transmitting torque of the first clutch；
The sliding wear power of the first clutch is determined by the transmitting torque of the first clutch；
The heat input of the first clutch is determined by the sliding wear power of the first clutch.
5. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 1 or 2, it is characterised in that
The second clutch infinitesimal includes the second friction plate infinitesimal and the second steel disc infinitesimal；
Determine that the heat of the second clutch infinitesimal includes the step of input：
Determine the heat input of second clutch；
The heat input for determining second clutch is assigned to the heat input of hot danger position；
The heat input for determining the hot danger position of second clutch is assigned to the heat input of infinitesimal；
The heat input of the second clutch infinitesimal is assigned to into the two of the second friction plate infinitesimal and the second steel disc infinitesimal
Side.
6. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 5, it is characterised in that described
The heat input of second clutch is obtained by following steps：
Determine the transmitting torque of the second clutch；
The sliding wear power of the second clutch is determined by the transmitting torque of the second clutch；
The heat input of the second clutch is determined by the sliding wear power of the second clutch.
7. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 1, it is characterised in that described
After the current output temperature of Current Temperatures and cooling oil of first clutch infinitesimal terminates for first clutch infinitesimal previous cycle
Temperature.
8. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 1, it is characterised in that described
After the current output temperature of Current Temperatures and cooling oil of second clutch infinitesimal terminates for second clutch infinitesimal previous cycle
Temperature.
9. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 3, it is characterised in that
Calculate the Current Temperatures and the current output temperature of cooling oil of the first clutch infinitesimal using the thermal model, including with
Lower step：
Determine the heat energy variable quantity of the first friction plate infinitesimal；
Determine the heat energy variable quantity of the first steel disc infinitesimal；
Determine the thermal convection current heat-energy transducer variable quantity of the first friction plate infinitesimal and cooling oil；
Determine the thermal convection current heat-energy transducer variable quantity of the first steel disc infinitesimal and cooling oil；
It is determined that the cooling oil heat energy variable quantity for passing through the first clutch infinitesimal；
By the heat energy variable quantity of the first friction plate infinitesimal, the heat energy variable quantity of the first steel disc infinitesimal, the first friction plate infinitesimal
Thermal convection current heat-energy transducer variable quantity, the thermal convection current heat-energy transducer variable quantity of the first steel disc infinitesimal and cooling oil with cooling oil and pass through
The cooling oil heat energy variable quantity of first clutch infinitesimal substitutes into the first relational expression, the second relational expression and the 3rd relational expression and calculates
Previous cycle terminate after the temperature of the first friction plate infinitesimal, the temperature of the first steel disc infinitesimal, first clutch infinitesimal it is cold
Oily output temperature；
Wherein, first relational expression is equivalent to the heat of the first friction plate infinitesimal for the heat input of first clutch infinitesimal
The relation of energy variable quantity, the heat energy variable quantity of the first steel disc infinitesimal and the cooling oil heat energy variable quantity for passing through first clutch infinitesimal
Formula；Second relational expression is equivalent to described for the heat that the heat input of first clutch infinitesimal is assigned to the first friction plate side infinitesimal
The relation of the heat energy variable quantity of the first friction plate infinitesimal and the first friction plate infinitesimal and cooling oil thermal convection current heat-energy transducer variable quantity
Formula；3rd relational expression is equivalent to described for the heat that the heat input of first clutch infinitesimal is assigned to the first steel disc side infinitesimal
The relational expression of the heat energy variable quantity of one steel disc infinitesimal and the first steel disc infinitesimal and cooling oil thermal convection current heat-energy transducer variable quantity；
The temperature of the first friction plate infinitesimal after being terminated according to previous cycle and the temperature of the first steel disc infinitesimal come determine first from
The Current Temperatures of clutch.
10. the temperature method of real-time of wet dual clutch transmission is used for as claimed in claim 5, it is characterised in that made
The Current Temperatures of the second clutch infinitesimal are calculated with the thermal model, including：
Determine the heat energy variable quantity of the second friction plate infinitesimal；
Determine the heat energy variable quantity of the second steel disc infinitesimal；
Determine the thermal convection current heat-energy transducer variable quantity of the second friction plate infinitesimal and cooling oil；
Determine the thermal convection current heat-energy transducer variable quantity of the second steel disc infinitesimal and cooling oil；
It is determined that the cooling oil heat energy variable quantity for passing through the second clutch；
By the heat energy variable quantity of the second friction plate infinitesimal, the heat energy variable quantity of the second steel disc infinitesimal, the second friction plate infinitesimal
Thermal convection current heat-energy transducer variable quantity, the thermal convection current heat-energy transducer variable quantity of the second steel disc infinitesimal and cooling oil with cooling oil and pass through
The cooling oil heat energy variable quantity of second clutch substitutes into the 4th relational expression, the 5th relational expression and the 6th relational expression and calculates currently
The temperature of the second friction plate infinitesimal, the temperature of the second steel disc infinitesimal, the cooling oil of second clutch infinitesimal after loop ends
Output temperature；
Wherein, the 4th relational expression is equivalent to the heat of the second friction plate infinitesimal for the heat input of second clutch infinitesimal
The relational expression of energy variable quantity, the heat energy variable quantity of the second steel disc infinitesimal and the cooling oil heat energy variable quantity for passing through second clutch；
The heat of the infinitesimal that the 5th relational expression is assigned to the second friction plate side for the heat input of second clutch infinitesimal is equivalent to described
The pass of the thermal convection current heat-energy transducer variable quantity of the heat energy variable quantity of the second friction plate infinitesimal and the second friction plate infinitesimal and cooling oil
It is formula；The heat of the infinitesimal that the 6th relational expression is assigned to the second steel disc side for the heat input of second clutch infinitesimal is equivalent to institute
State the relation of the heat energy variable quantity and the second steel disc infinitesimal of the second steel disc infinitesimal and the thermal convection current heat-energy transducer variable quantity of cooling oil
Formula；
The temperature of the second friction plate infinitesimal after being terminated according to previous cycle and the temperature of the second steel disc infinitesimal come determine second from
The Current Temperatures of clutch.
The 11. temperature method of real-time for being used for wet dual clutch transmission as claimed in claim 1, it is characterised in that make
The first clutch and the Current Temperatures of the second clutch and the cooling oil of double clutch with Jing determinations is currently defeated
Go out temperature and comprise the following steps performing control action：
By the Current Temperatures of the first clutch, the Current Temperatures of the second clutch, the double clutch cooling
The current sliding wear power of oily current output temperature, the current sliding wear power of first clutch and second clutch determines double clutch
Current desired cooling oil flow；
By current desired cooling oil flow, the dbjective state of the flow switch element of hydraulic control system is determined；
The cooling oil of Current Temperatures, the Current Temperatures of the second clutch and the double clutch when the first clutch
When having one in current output temperature three more than threshold value, control double clutch enters protected mode.
12. a kind of temperature real-time monitoring devices for wet dual clutch transmission, it is characterised in that include：
First temperature determination module, it determines that the initial temperature of first clutch and second clutch infinitesimal, cooling oil are initially defeated
Go out temperature；
Cooling oil flow determining module, it determines the cooling oil flow of double clutch；
Second temperature determining module, it determines the cooling oil input temp of double clutch；
Heat is input into determining module, and it determines the heat input of the first clutch infinitesimal, the second clutch infinitesimal
Heat is input into；
Temperature computation module, it is by the first clutch and the initial temperature and cooling oil stream of the second clutch infinitesimal
Amount, the cooling oil initial input temperature of double clutch and initial output temperature, the heat input of the first clutch infinitesimal and
The heat input of second clutch infinitesimal is applied to thermal model, and using the thermal model calculate the first clutch infinitesimal and
The current output temperature of the Current Temperatures of second clutch infinitesimal, cooling oil；
3rd temperature determination module, it is based on Current Temperatures, the cooling of the first clutch infinitesimal and second clutch infinitesimal
Oily current output temperature determines that first clutch and the Current Temperatures of second clutch, the cooling oil of double clutch currently export temperature
Degree；
Control module：It uses Current Temperatures and double clutches of the first clutch of Jing determinations and the second clutch
The current output temperature of cooling oil of device is performing control action.
13. temperature real-time monitoring devices for being used for wet dual clutch transmission as claimed in claim 12, it is characterised in that：Institute
First clutch is stated positioned at the outside of the second clutch, the cooling oil input temp of the second clutch most inner side infinitesimal
For the cooling oil input temp of the double clutch, the cooling oil input temp of the first clutch most inner side infinitesimal is by described
The current output temperature of cooling oil of second clutch outermost infinitesimal determined, the cooling of the first clutch outermost infinitesimal
Cooling oil current output temperature of the oily current output temperature as double clutch.
14. temperature real-time monitoring devices for being used for wet dual clutch transmission as claimed in claim 12, it is characterised in that institute
First clutch infinitesimal is stated including the first friction plate infinitesimal and the first steel disc infinitesimal,
The heat input determining module includes：
The heat input module of first clutch, determines the heat input of first clutch；
The heat distribution module of first clutch, determine first clutch heat input be assigned to hot danger position heat it is defeated
Enter；And determine that the heat input of the hot danger position of first clutch is assigned to the heat input of infinitesimal；Finally by described first from
The heat input of clutch infinitesimal is assigned to the both sides of the first friction plate infinitesimal and the first steel disc infinitesimal.
15. temperature real-time monitoring devices for being used for wet dual clutch transmission as claimed in claim 14, it is characterised in that institute
Stating the heat input module of first clutch includes：
First transmitting torque determining module, it determines the transmitting torque of the first clutch；
First sliding wear power determination module, it is determined the cunning of the first clutch by the transmitting torque of the first clutch
Mill power；
Heat is input into determining module, and it is determined that the heat of the first clutch is defeated by the sliding wear power of the first clutch
Enter.
16. temperature real-time monitoring devices for being used for wet dual clutch transmission as claimed in claim 12, it is characterised in that institute
Second clutch infinitesimal is stated including the second friction plate infinitesimal and the second steel disc infinitesimal,
The heat input determining module also includes：
The heat input module of second clutch, determines the heat input of second clutch；
The heat distribution module of second clutch, determine second clutch heat input be assigned to hot danger position heat it is defeated
Enter；And determine that the heat input of the hot danger position of second clutch is assigned to the heat input of infinitesimal；Finally by described second from
The heat input of clutch infinitesimal is assigned to the both sides of the second friction plate infinitesimal and the second steel disc infinitesimal.
17. temperature real-time monitoring devices for being used for wet dual clutch transmission as claimed in claim 16, it is characterised in that
The heat input module of the second clutch includes：
Second transmitting torque determining module, it determines the transmitting torque of the second clutch；
Second sliding wear power determination module, it is determined the cunning of the second clutch by the transmitting torque of the second clutch
Mill power；
Heat is input into determining module, and it is determined that the heat of the second clutch is defeated by the sliding wear power of the second clutch
Enter.
18. temperature real-time monitoring devices for being used for wet dual clutch transmission as claimed in claim 14, it is characterised in that institute
Stating temperature computation module includes：
First heat energy variable quantity module, it determines respectively the heat energy variable quantity of the first friction plate infinitesimal, first steel disc
The cooling oil heat energy variable quantity of the heat energy variable quantity of infinitesimal and the first clutch infinitesimal；
First thermal convection current heat-energy transducer variable quantity module, it determines that respectively the first friction plate infinitesimal is changed with the thermal convection current of cooling oil
The thermal convection current heat-energy transducer variable quantity of heat energy variable quantity and the first steel disc infinitesimal and cooling oil；
First temperature computation module, it becomes the heat energy of the heat energy variable quantity of the first friction plate infinitesimal, the first steel disc infinitesimal
The thermal convection current of the thermal convection current heat-energy transducer variable quantity, the first steel disc infinitesimal and cooling oil of change amount, the first friction plate infinitesimal and cooling oil
Heat-energy transducer variable quantity and pass through first clutch infinitesimal cooling oil heat energy variable quantity described in the first temperature computation module calculate
Show that previous cycle terminates temperature, the temperature of the first steel disc infinitesimal, the cooling oil output temperature of the rear first friction plate infinitesimal；
Wherein, first relational expression is equivalent to the heat of the first friction plate infinitesimal for the heat input of first clutch infinitesimal
The relation of energy variable quantity, the heat energy variable quantity of the first steel disc infinitesimal and the cooling oil heat energy variable quantity for passing through first clutch infinitesimal
Formula；Second relational expression is equivalent to described for the heat that the heat input of first clutch infinitesimal is assigned to the first friction plate side infinitesimal
The relation of the heat energy variable quantity of the first friction plate infinitesimal and the first friction plate infinitesimal and cooling oil thermal convection current heat-energy transducer variable quantity
Formula；3rd relational expression is equivalent to described for the heat that the heat input of first clutch infinitesimal is assigned to the first steel disc side infinitesimal
The relational expression of the heat energy variable quantity of one steel disc infinitesimal and the first steel disc infinitesimal and cooling oil thermal convection current heat-energy transducer variable quantity；
3rd temperature determination module includes the Current Temperatures determining module of first clutch, after it terminates according to previous cycle
The temperature of the temperature of the first friction plate infinitesimal and the first steel disc infinitesimal is determining the Current Temperatures of first clutch.
19. temperature real-time monitoring devices for being used for wet dual clutch transmission as claimed in claim 16, it is characterised in that institute
Stating temperature computation module also includes：
Second heat energy variable quantity module, it determines respectively the heat energy variable quantity of the second friction plate infinitesimal, second steel disc
The cooling oil heat energy variable quantity of the heat energy variable quantity of infinitesimal and the second clutch infinitesimal；
Second thermal convection current heat-energy transducer variable quantity module, it determines that respectively the second friction plate infinitesimal is changed with the thermal convection current of cooling oil
The thermal convection current heat-energy transducer variable quantity of heat energy variable quantity and the second steel disc infinitesimal and cooling oil；
Second temperature computing module, it becomes the heat energy of the heat energy variable quantity of the second friction plate infinitesimal, the second steel disc infinitesimal
The thermal convection current of the thermal convection current heat-energy transducer variable quantity, the second steel disc infinitesimal and cooling oil of change amount, the second friction plate infinitesimal and cooling oil
Heat-energy transducer variable quantity and pass through second clutch cooling oil heat energy variable quantity described in second temperature computing module calculate
Previous cycle terminates temperature, the temperature of the second steel disc infinitesimal, the cooling oil output temperature of the rear second friction plate infinitesimal；
Wherein, the 4th relational expression is equivalent to the heat of the second friction plate infinitesimal for the heat input of second clutch infinitesimal
The relational expression of energy variable quantity, the heat energy variable quantity of the second steel disc infinitesimal and the cooling oil heat energy variable quantity for passing through second clutch；
The heat of the infinitesimal that the 5th relational expression is assigned to the second friction plate side for the heat input of second clutch infinitesimal is equivalent to described
The pass of the thermal convection current heat-energy transducer variable quantity of the heat energy variable quantity of the second friction plate infinitesimal and the second friction plate infinitesimal and cooling oil
It is formula；The heat of the infinitesimal that the 6th relational expression is assigned to the second steel disc side for the heat input of second clutch infinitesimal is equivalent to institute
State the relation of the heat energy variable quantity and the second steel disc infinitesimal of the second steel disc infinitesimal and the thermal convection current heat-energy transducer variable quantity of cooling oil
Formula；
3rd temperature determination module also includes second clutch Current Temperatures determining module, after it terminates according to previous cycle
The temperature of the temperature of the second friction plate infinitesimal and the second steel disc infinitesimal is determining the Current Temperatures of second clutch.
20. temperature real-time monitoring devices for being used for wet dual clutch transmission as claimed in claim 12, it is characterised in that institute
Stating temperature real-time monitoring device also includes Current Temperatures control module, and it uses the first clutch and described that Jing determines
The Current Temperatures of two clutches and the current output temperature of the cooling oil of double clutch are comprised the following steps performing control action：
By the Current Temperatures of the first clutch, the Current Temperatures of the second clutch, the double clutch cooling
The current sliding wear power of oily current output temperature, the current sliding wear power of first clutch and second clutch determines double clutch
Current desired cooling oil flow；
By current desired cooling oil flow, the dbjective state of the flow switch element of hydraulic control system is determined；
The cooling oil of Current Temperatures, the Current Temperatures of the second clutch and the double clutch when the first clutch
When having one in current output temperature three more than threshold value, control double clutch enters protected mode.
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| CN110426201A (en) * | 2019-07-26 | 2019-11-08 | 上海交通大学 | Slip clutch transient temperature measuring method and device based on six parameter models |
| CN112431876A (en) * | 2019-08-26 | 2021-03-02 | 上海汽车集团股份有限公司 | Temperature estimation method and device for dry 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 |
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