CN108278151A - A kind of aperture predictor method of electrical heating type thermostat - Google Patents
A kind of aperture predictor method of electrical heating type thermostat Download PDFInfo
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- CN108278151A CN108278151A CN201711419657.1A CN201711419657A CN108278151A CN 108278151 A CN108278151 A CN 108278151A CN 201711419657 A CN201711419657 A CN 201711419657A CN 108278151 A CN108278151 A CN 108278151A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
Abstract
The present invention provides a kind of aperture predictor methods of electrical heating type thermostat, including：The coolant water temperature of paraffin temperature change value and the engine at the i-th calculating moment based on the i-th calculating moment determines the paraffin temperature at the i-th calculating moment；The Resistant heating duty ratio that the moment is calculated based on i+1 determines that i+1 calculates the Endothermic power of the paraffin at moment, and the paraffin temperature based on the identified i-th calculating moment, the coolant water temperature at i+1 calculating moment determine that i+1 calculates the heat exchange power of the paraffin at moment；The heat exchange power and preset rules that the paraffin at moment is calculated based on the Endothermic power of the paraffin at specific heat capacity, the quality of paraffin, identified i+1 the calculating moment of paraffin, i+1 determine the i-th+2 paraffin temperature change value for calculating the moment；The paraffin temperature change value for calculating the moment according to identified i-th+2 estimates the aperture of the thermostat at the i-th+2 calculating moment.Method provided by the invention can reduce cost, highly practical.
Description
Technical field
The present invention relates to a kind of aperture predictor methods of thermostat, and in particular to a kind of engine electrical heating type thermostat
Aperture predictor method.
Background technology
Thermostat is that current engine thermal management system executes wherein very important component, the installation site of thermostat and
Effect can be as shown in Figure 1.As shown in Figure 1, thermostat is located in engine coolant circuit, water pump water outlet flow is to dissipating in order to control
The component of hot device and engine body distribution.Prior paraffin thermostat, lower in coolant liquid, thermostat valve is in bullet
The channel between engine and radiator is closed under the action of spring, coolant liquid is through water pump return engine, i.e. partial circulating.With cold
But liquid temperature gradually increases, and it is liquid that paraffin, which starts to melt, is acted on by push rod, finally makes valve opening.At this moment coolant liquid passes through
Engine is flowed back to by radiator and thermostat valve, then through water pump, carries out systemic circulation.
However, traditional paraffin thermostat has been difficult to meet water temperature zonal control to water temperature control response rapidity and standard
Determining requirement.Electronic thermostat fast response time, but cost is relatively high at present, can not spread on the car of low side.Electricity
The relative inexpensiveness of thermostat is heated, and can be fast compared to the response speed of prior paraffin thermostat, is that sexual valence compares
High realization method, is particularly suitable for the solution of low cost, and electrical heating thermostat structure is as shown in Figure 2, it may include shell,
Systemic circulation valve, connection plug, compression spring, partial circulating valve, the paraffin being placed in rubber tube, expansion member on shell
Part, lift pin, thermostat unit and adding thermal resistance etc., its working principle is that：When the cooling temperature of the coolant liquid of engine is low
When specified value, the exquisite paraffin in thermostat temperature sensor is in solid-state, and thermostat valve is closed under the action of compression spring to be started
Channel between machine and radiator, coolant liquid carry out partial circulating in engine through water pump return engine.When coolant temperature reaches
To after specified value, paraffin, which starts to melt, gradually becomes liquid, and volume increases and oppresses rubber tube therewith makes its contraction.In rubber tube
Lift pin is acted on upward thrust while contraction, push rod has downward propulsive thrust that valve is made to open on systemic circulation valve valve
It opens.At this moment coolant liquid flows back to engine via the radiator and thermostat valve being arranged in coolant circuit, then through water pump, carries out
Systemic circulation.
However, current electrical heating thermostat needs installation site sensor to be detected the aperture of thermostat, due to
The cost of position sensor is higher, and part intermediate-size car can be just that electrical heating thermostat is equipped with position feedback transducer, this makes
Electrical heating thermostat cannot be popularized.
It would therefore be highly desirable to need to occur it is a kind of can be to be realized with a low cost the side estimated to the aperture of electrical heating thermostat
Case occurs.
Invention content
In view of the above technical problems, the present invention provides a kind of aperture predictor method of electrical heating type thermostat, it is therefore intended that
It solves under the premise of position-sensor-free feedback signal, relatively accurate thermostat position is obtained with prediction model, to drop
Low cost meets the needs of heat management, final to realize the purpose for reducing oil consumption.
The technical solution adopted by the present invention is：
The embodiment of the present invention provides a kind of aperture predictor method of electrical heating type thermostat, and the method is used for when default
Between in section, the aperture of each thermostat for calculating the moment is calculated, including：The paraffin temperature that the moment is calculated based on i-th becomes
The coolant water temperature of the engine at change value and the i-th calculating moment determines the paraffin temperature at the i-th calculating moment；Wherein, i is more than 0
Integer；The Resistant heating duty ratio that the moment is calculated based on i+1 determines that i+1 calculates the Endothermic power of the paraffin at moment, with
And the paraffin temperature based on the identified i-th calculating moment, the coolant water temperature at i+1 calculating moment determine that i+1 calculates the moment
Paraffin heat exchange power；Based on the suction of the paraffin at specific heat capacity, the quality of paraffin, identified i+1 the calculating moment of paraffin
Thermal power, i+1 calculate the heat exchange power of the paraffin at moment and preset rules determine the i-th+2 paraffin temperature change for calculating the moment
Value；The paraffin temperature change value for calculating the moment according to identified i-th+2 estimates the aperture of the thermostat at the i-th+2 calculating moment.
Optionally, further include：It should if the i-th Resistant heating duty ratio for calculating the moment is persistently more than in preset time
The standard-sized sheet minimum duty cycle corresponding to the coolant water temperature at moment is calculated, then is set the aperture of the thermostat at the calculating moment to
100%, and by the paraffin temperature setting at the calculating moment be aperture be temperature corresponding to 100%.
Optionally, the i-th standard-sized sheet minimum duty cycle calculated corresponding to the coolant water temperature at moment calculates the cold of moment based on i-th
But water temperature and preset first property list determine that preset first property list characterizes different coolant water temperatures and adds with resistance wire
Correspondence between hot duty ratio.
Optionally, wherein the 1st calculate the moment specific heat capacity of the paraffin temperature change value based on paraffin, the quality of paraffin, the
1, which calculates the Endothermic power of the paraffin at moment, the heat exchange power of the paraffin at the 1st calculating moment and the preset rules, determines, wherein
Described 1st Endothermic power for calculating the paraffin at moment calculates the Resistant heating duty ratio at moment based on the 1st and determines；Described 1st
The heat exchange power for calculating the paraffin at moment calculates the coolant water temperature determination at moment based on preset paraffin initial temperature and the 1st.
Optionally, the Resistant heating duty that the Endothermic power of the described 1st paraffin for calculating the moment calculates the moment based on the 1st
Include than determination：The 1st is determined based on the Resistant heating duty ratio at identified 1st calculating moment and preset second property list
The Endothermic power of the paraffin at moment is calculated, preset second property list characterizes different Resistant heating duty ratios and paraffin
Endothermic power between correspondence.
Optionally, the heat exchange power of the described 1st paraffin for calculating the moment is based on preset paraffin initial temperature and the 1st calculating
The coolant water temperature at moment determines：The coolant water temperature that the moment is calculated based on the preset paraffin initial temperature and the 1st is determined
Temperature deviation between the initial temperature and the coolant water temperature at the 1st calculating moment；Based on identified temperature deviation and preset
Third property list determine the 1st calculating moment paraffin heat exchange power, the preset third property list characterizes different temperature
Spend the correspondence between deviation and the heat exchange power of paraffin.
Optionally, the Resistant heating duty ratio that the moment is calculated based on i+1 determines that i+1 calculates the paraffin at moment
Endothermic power include：The Resistant heating duty ratio at moment and preset second property list are calculated based on identified i+1
Determine that i+1 calculates the Endothermic power of the paraffin at moment, preset second property list characterizes different Resistant heatings and accounts for
Sky is than the correspondence between the Endothermic power of paraffin.
Optionally, paraffin temperature, the coolant water temperature at i+1 calculating moment that the moment is calculated based on identified i-th
Determine that the heat exchange power that i+1 calculates the paraffin at moment includes：Based on it is identified i-th calculate the moment paraffin temperature and i-th+
The coolant water temperature at 1 calculating moment determines that the paraffin temperature at the i-th calculating moment and i+1 calculate the temperature between the coolant water temperature at moment
Spend deviation；Determine that i+1 calculates the heat exchange work(of the paraffin at moment based on identified temperature deviation and preset third property list
Rate, the preset third property list characterize the correspondence between different temperature deviations and the heat exchange power of paraffin.
Optionally, the paraffin temperature change value that the moment is calculated according to i-th+2 estimates the section temperature at the i-th+2 calculating moment
The aperture of device, including：The cooling of the engine at the paraffin temperature change value for calculating the moment according to i-th+2 and the i-th+2 calculating moment
Water temperature determines the paraffin temperature at the i-th+2 calculating moment；The paraffin temperature for calculating the moment based on identified i-th+2 and preset the
Four property lists estimate the aperture of the thermostat at the i-th+2 calculating moment, and preset 4th property list characterizes different paraffin temperature
Correspondence between degree and the aperture of thermostat.
The aperture predictor method of electrical heating type thermostat provided in an embodiment of the present invention, based on coolant water temperature, adding thermal resistance
Silk energized state is that can determine that the predictor method of thermostat aperture, this method need to only be can be realized by prediction model, Bu Huizeng
Add any cost so that electrical heating thermostat has open degree feedback information, is conducive to the heat management of vehicle, realizes lower oil
Consumption.
Description of the drawings
Fig. 1 is to show the installation site of thermostat in the prior art and the structural schematic diagram of effect；
Fig. 2 is the structural schematic diagram of electrical heating thermostat in the prior art；
Fig. 3 is the flow diagram of the aperture predictor method of electrical heating type thermostat provided in an embodiment of the present invention.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The aperture predictor method of electrical heating type thermostat provided in an embodiment of the present invention is used for existing electrical heating type section
The aperture of warm device is estimated, and can be to be carried out in advance to the aperture of electrical heating type thermostat illustrated in fig. 2 in one example
Estimate.
The aperture predictor method of electrical heating type thermostat provided in an embodiment of the present invention is used within a preset period of time, to every
The aperture of a thermostat for calculating the moment is calculated, and can be executed by control unit of engine ECU.It is default in the present embodiment
Period can be set from vehicle launch to the undergone period of stopping, each to calculate the moment by actual conditions,
It can be executed inside ECU by starting timing mechanism, for example, ECU can execute estimating for aperture at interval of 10s, in this way
Each interval calculated between the moment is just 10s, and at each calculating moment, ECU can execute the calculating of the aperture of thermostat automatically.
In practical applications, ECU can at any time control the aperture of thermostat using the aperture for the thermostat estimated.
The aperture of thermostat is carried out in the aperture predictor method using electrical heating type thermostat provided in this embodiment pre-
It when estimating, needs to use 4 preset property lists, respectively preset first to fourth property list, below first to this 4 property lists
It is introduced.
Preset first property list
In the present embodiment, preset first property list characterizes between different coolant water temperatures and Resistant heating duty ratio
Correspondence, i.e., by the water temperature (ECT) of the cooling water of present engine to the corresponding thermostat heating duty of thermostat standard-sized sheet
Than (FulOpn_Thmst_Percent).The property list can obtain in the following way：Stream is placed before and after electrical heating thermostat
Gauge is respectively arranged flowmeter on the inlet and outlet pipeline of electric heater thermostat, then in different paraffin temperature
Under degree, for example, at a temperature of paraffin temperature step a length of 10 DEG C of different paraffin, it is incremented by the control of duty ratio for resistive heater load
Signal processed, for example, load 5% incremental duty ratio, until the numerical value of front and back flowmeter is identical, it was demonstrated that thermostat be all turned on for
Only.In one example, obtained first characteristic sheet form can be as shown in table 1 below：
Table 1
Preset second property list
In the present embodiment, preset second property list characterizes different Resistant heating duty ratio (FulOpn_Thmst_
Percent) with the Endothermic power of paraffinBetween correspondence.The property list can obtain in the following way：Exhausted
In hot tank, coolant liquid and paraffin are placed, the electric current of different duty is led to heating paraffin resistance, for example, being divided into 10% between passing to
Duty ratio electric current, then can by measure coolant liquid temperature change be converted into coolant liquid Endothermic power, the i.e. suction of paraffin
Thermal power.In one example, obtained second characteristic sheet form can be as shown in table 2 below：
Table 2
Preset third property list
In the present embodiment, preset third property list characterizes between different temperature deviations and the heat exchange power of paraffin
Correspondence, the i.e. deviation of paraffin temperature (Wax_Temp) and water temperature and the external heat release power of paraffinBetween correspondence
Relationship.The property list can obtain in the following way：In insulated cabinet, coolant liquid and paraffin are placed, it is inclined using different water temperatures
Under difference, the temperature change by measuring coolant liquid is converted into coolant liquid heat exchange power, the i.e. heat exchange power of paraffin, when water temperature compares stone
When wax temperature is high, it is the Endothermic power of paraffin, can be expressed with positive number, is paraffin when water temperature is lower than paraffin temperature
Heat exchange power, can be expressed, can be determined by formula E=c*m* δ T with negative, wherein c be coolant liquid specific heat capacity, m be it is cold
But the quality of liquid, δ T are the temperature change of coolant liquid.In one example, obtained second characteristic sheet form can be such as the following table 3
It is shown：
Table 3
Preset 4th property list
In the present embodiment, preset 4th property list characterizes the aperture Thmst_ of different paraffin temperature and thermostat
Correspondence between Pos.The property list can obtain in the following way：Flowmeter is placed before and after electrical heating thermostat,
At a temperature of different paraffin, for example, at a temperature of paraffin temperature step a length of 10 DEG C of different paraffin, determined by flowmeter flow-rate ratio
Current thermostat opening value, for example, two output flow meters, the measured value of a flowmeter is 5L/h, another flowmeter
Measured value be 15L/h, then at this time aperture be 5/ (5+15)=40%.In one example, obtained second property list shape
Formula can be as shown in table 4 below：
Table 4
Hereinafter, in conjunction with above-mentioned 4 preset property lists and Fig. 3 to electrical heating type thermostat provided in an embodiment of the present invention
Aperture predictor method be described.
Fig. 3 is the flow diagram of the aperture predictor method of electrical heating type thermostat provided in an embodiment of the present invention.Such as Fig. 3
Shown, the aperture predictor method of electrical heating type thermostat provided in an embodiment of the present invention includes the following steps：
The coolant water temperature for the engine that S101, the paraffin temperature change value for calculating the moment based on i-th and i-th calculate the moment is true
Fixed i-th calculates the paraffin temperature at moment；Wherein, i is the integer more than 0.
In this step, the i-th paraffin temperature for calculating the moment can be equal to the paraffin temperature change value and that i-th calculates the moment
I calculates the sum of the coolant water temperature of engine at moment.
S102, the Resistant heating duty ratio that the moment is calculated based on i+1 determine that i+1 calculates the heat absorption of the paraffin at moment
Power, and the paraffin temperature at the i-th calculating moment, the coolant water temperature at i+1 calculating moment based on determined by step S101 are true
Determine the heat exchange power that i+1 calculates the paraffin at moment.
In this step, the Resistant heating duty ratio that the moment is calculated based on i+1 determines that i+1 calculates the moment
The Endothermic power of paraffin may include：The Resistant heating duty ratio at moment and above-mentioned preset is calculated based on identified i+1
Second property list determines that i+1 calculates the Endothermic power of the paraffin at moment, you can the Resistant heating at moment is calculated by i+1
Duty ratio consults above-mentioned table 2 to obtain the Endothermic power of corresponding paraffin.
The coolant water temperature that the moment is calculated based on the identified i-th calculating paraffin temperature at moment, i+1 determines i-th+
The heat exchange power of the paraffin at 1 calculating moment may include：The paraffin temperature and i+1 for calculating the moment based on identified i-th calculate
The coolant water temperature at moment determines that the temperature between the paraffin temperature at the i-th calculating moment and the coolant water temperature at i+1 calculating moment is inclined
Difference；Determine that i+1 calculates the heat exchange power of the paraffin at moment based on identified temperature deviation and preset third property list, i.e.,
Above-mentioned table 3 can be consulted by the temperature deviation of calculating to obtain the heat exchange power of corresponding paraffin.
S103, the i+1 based on determined by the specific heat capacity, the quality of paraffin, step S102 of paraffin calculate the paraffin at moment
Endothermic power, i+1 calculate the moment paraffin heat exchange power and preset rules determine i-th+2 calculating the moment paraffin temperature
Changing value.
In embodiments of the present invention, each paraffin temperature change value for calculating the moment can be calculated by following formula (1)：
Wherein, cwaxAnd mwaxRespectively indicate paraffin specific heat capacity and quality, can by Experimental Calibration,For paraffin temperature
Changing value, i.e., the paraffin temperature change value for calculating moment to the current calculating moment from upper one,For the Endothermic power of paraffin,
The deviation between the paraffin temperature and the current coolant water temperature for calculating the moment that the moment determines can be calculated based on upper one, consult above-mentioned the
Two property lists obtain,It, can be based on the current resistance ratio heating duty for calculating the moment measured for the heat exchange power of paraffin
It is obtained than consulting above-mentioned third property list.
After determining each paraffin temperature change value for calculating the moment by above-mentioned formula (1), and then can be based on calculating
The coolant water temperature of paraffin temperature change value and the engine currently measured determines the current paraffin temperature for calculating the moment, finally can profit
Corresponding thermostat aperture is obtained with above-mentioned 4th property list.
That is, the i-th+2 paraffin temperature change value for calculating the moment can be determined by above-mentioned formula (1), specifically, by paraffin
Specific heat capacity, the quality of paraffin, the Endothermic power of the paraffin at identified i+1 calculating moment, i+1 calculate the paraffin at moment
Heat exchange power substitutes into above-mentioned formula (1) just respectively can obtain the paraffin temperature change value at the moment.
S104, the paraffin temperature change value that the moment is calculated according to i-th+2 that step S103 is determined, when estimating the i-th+2 calculating
The aperture of the thermostat at quarter.
The step may particularly include：The hair of the paraffin temperature change value for calculating the moment according to i-th+2 and the i-th+2 calculating moment
The coolant water temperature of motivation determines the paraffin temperature at the i-th+2 calculating moment；The paraffin temperature for calculating the moment based on identified i-th+2
The aperture of the thermostat at the i-th+2 calculating moment is estimated with preset 4th property list.
Specifically, after determining the paraffin temperature change value at the i-th+2 calculating moment according to formula (1) in step s 130,
The paraffin temperature change value of calculating can be added with the coolant water temperature at the moment to obtain the paraffin temperature at the moment, then be led to
It crosses and consults above-mentioned table 4 just and can obtain the aperture of the moment corresponding thermostat.
Further, during carrying out aperture calculating, i=1 the 1st calculate the moment paraffin temperature change value can
The quality of specific heat capacity, paraffin based on paraffin, the Endothermic power of the paraffin at the 1st calculating moment, the paraffin at the 1st calculating moment change
Thermal power and the preset rules determine, wherein the described 1st Endothermic power for calculating the paraffin at moment is based on the 1st and calculates the moment
Resistant heating duty ratio determine；Described 1st heat exchange power for calculating the paraffin at moment is based on preset paraffin initial temperature
The coolant water temperature that the moment is calculated with the 1st determines.Wherein, when the Endothermic power of the described 1st paraffin for calculating the moment is based on the 1st calculating
The Resistant heating duty ratio determination at quarter may include：The Resistant heating duty ratio that calculates the moment based on the identified 1st and pre-
If the second property list determine the 1st calculating the moment paraffin Endothermic power.Described 1st calculates the heat exchange power of the paraffin at moment
It may include based on the coolant water temperature determination at preset paraffin initial temperature and the 1st calculating moment：Based at the beginning of the preset paraffin
The coolant water temperature at beginning temperature and the 1st calculating moment determines the temperature between the initial temperature and the coolant water temperature at the 1st calculating moment
Spend deviation；The heat exchange power of the paraffin at the 1st calculating moment is determined based on identified temperature deviation and preset third property list.
Paraffin initial temperature in the embodiment of the present invention can be determined based on engine misses state.For example, judging in ECU
Cut-off phase reaches preset time, which need to determine according to vehicle, different vehicles, required preset time
Difference, in one example, such as cut-off phase is more than 1h, then when can set paraffin initial temperature to the 1st calculating
The coolant water temperature measured is carved, at this point, the Endothermic power of paraffin can be 0, and does not reach pre- in ECU judgement cut-off phases
If when the time, then the paraffin temperature that can be calculated a upper calculating cycle is as paraffin initial temperature.
After the paraffin temperature change value for determining for the 1st calculating moment, the coolant water temperature at the moment and paraffin temperature can be become
Change value is added to obtain the paraffin temperature at the moment, and then the thermostat at the moment can be obtained based on above-mentioned 4th property list
Aperture.Correspondingly, when the calculating of the aperture of subsequent each thermostat for calculating the moment (i is more than or equal to 2) can refer to the 1st calculating
The aperture computational methods of the thermostat at quarter are determined.
In addition, in order to eliminate the accumulated error generated to paraffin temperature computation in calculating process, the embodiment of the present invention provides
The aperture predictor method of electrical heating type thermostat further include：If i-th calculates the Resistant heating duty ratio at moment default
(such as 30s) is persistently more than the standard-sized sheet minimum duty cycle corresponding to the coolant water temperature at the calculating moment in time, then by the calculating
The aperture of the thermostat at moment is set as 100%, and by the paraffin temperature setting at the calculating moment be aperture is corresponding to 100%
Temperature, i.e., the paraffin temperature at the moment is updated, in the calculating of the paraffin temperature change value of subsequent time, utilizes this
Newer paraffin temperature determines the Endothermic power of corresponding paraffin.Wherein, i-th the standard-sized sheet corresponding to the coolant water temperature at moment is calculated
The coolant water temperature and above-mentioned preset first property list that minimum duty cycle can calculate the moment based on i-th determine, i.e., by currently counting
The coolant water temperature at calculation moment consults above-mentioned table 1 and obtains corresponding standard-sized sheet minimum duty cycle.
To sum up, the aperture predictor method of electrical heating type thermostat provided in an embodiment of the present invention is due to the side using pure software
Formula realizes the calculating to electrical heating thermostat aperture, so having prodigious economic benefit in cost.Compared to more traditional no position
The thermostat for setting feedback, for the heat management of automobile, aperture, which calculates, can have higher precision, the advantage of higher response.
Under the premise of correlation properties table can be demarcated accurately, the precision of estimation can ensure.
Embodiment described above, only specific implementation mode of the invention, to illustrate technical scheme of the present invention, rather than
It is limited, scope of protection of the present invention is not limited thereto, although having been carried out with reference to the foregoing embodiments to the present invention detailed
Illustrate, it will be understood by those of ordinary skill in the art that：Any one skilled in the art the invention discloses
In technical scope, it can still modify to the technical solution recorded in previous embodiment or variation can be readily occurred in, or
Person's equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make corresponding technical solution
Essence is detached from the spirit and scope of technical solution of the embodiment of the present invention, should be covered by the protection scope of the present invention.Therefore,
The protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. a kind of aperture predictor method of electrical heating type thermostat, which is characterized in that the method is used within a preset period of time,
The aperture of each thermostat for calculating the moment is calculated, including：
The coolant water temperature of paraffin temperature change value and the engine at the i-th calculating moment based on the i-th calculating moment determines the i-th calculating
The paraffin temperature at moment；Wherein, i is the integer more than 0；
The Resistant heating duty ratio that the moment is calculated based on i+1 determines that i+1 calculates the Endothermic power of the paraffin at moment, and
Determine that i+1 calculates the moment based on the paraffin temperature at identified i-th calculating moment, the coolant water temperature at i+1 calculating moment
The heat exchange power of paraffin；
Based on Endothermic power, the i+1 meter of the paraffin at specific heat capacity, the quality of paraffin, identified i+1 the calculating moment of paraffin
It calculates the heat exchange power of the paraffin at moment and preset rules determines the i-th+2 paraffin temperature change value for calculating the moment；
The paraffin temperature change value for calculating the moment according to identified i-th+2 estimates opening for the thermostat at the i-th+2 calculating moment
Degree.
2. according to the method described in claim 1, it is characterized in that, further including：If the Resistant heating at the i-th calculating moment accounts for
Sky in preset time than being persistently more than the standard-sized sheet minimum duty cycle corresponding to the coolant water temperature at the calculating moment, then by the calculating
The aperture of the thermostat at moment is set as 100%, and by the paraffin temperature setting at the calculating moment be aperture is corresponding to 100%
Temperature.
3. according to the method described in claim 2, it is characterized in that, i-th calculate the moment coolant water temperature corresponding to standard-sized sheet most
The coolant water temperature and the determination of preset first property list that small duty ratio calculates the moment based on i-th, preset first property list
Characterize the correspondence between different coolant water temperatures and Resistant heating duty ratio.
4. according to the method described in claim 1, it is characterized in that, wherein, the paraffin temperature change value at the 1st calculating moment is based on
The heat exchange work(of the specific heat capacity of paraffin, the quality of paraffin, the Endothermic power of the paraffin at the 1st calculating moment, the paraffin at the 1st calculating moment
Rate and preset rules determination,
Wherein, it is true to calculate the Resistant heating duty ratio at moment based on the 1st for the Endothermic power of the described 1st paraffin for calculating the moment
It is fixed；
Described 1st heat exchange power for calculating the paraffin at moment calculates the cooling at moment based on preset paraffin initial temperature and the 1st
Water temperature determines.
5. according to the method described in claim 4, it is characterized in that, the Endothermic power of the paraffin at the 1st calculating moment is based on
The Resistant heating duty ratio at the 1st calculating moment, which determines, includes：
When determining the 1st calculating based on the Resistant heating duty ratio at identified 1st calculating moment and preset second property list
The Endothermic power of the paraffin at quarter, preset second property list characterize the heat absorption of different Resistant heating duty ratio and paraffin
Correspondence between power.
6. according to the method described in claim 4, it is characterized in that, the heat exchange power of the paraffin at the 1st calculating moment is based on
The coolant water temperature at preset paraffin initial temperature and the 1st calculating moment, which determines, includes：
The initial temperature and the 1st meter are determined based on the coolant water temperature of the preset paraffin initial temperature and the 1st calculating moment
Calculate the temperature deviation between the coolant water temperature at moment；
The heat exchange power of the paraffin at the 1st calculating moment, institute are determined based on identified temperature deviation and preset third property list
It states preset third property list and characterizes correspondence between different temperature deviations and the heat exchange power of paraffin.
7. according to the method described in claim 1, it is characterized in that, the Resistant heating for being calculated the moment based on i+1 is accounted for
The Endothermic power of paraffin that sky calculates the moment than determining i+1 includes：
The Resistant heating duty ratio at moment is calculated based on identified i+1 and preset second property list determines i+1 meter
The Endothermic power of the paraffin at moment is calculated, preset second property list characterizes different Resistant heating duty ratios and paraffin
Correspondence between Endothermic power.
8. according to the method described in claim 1, it is characterized in that, the paraffin temperature for calculating the moment based on identified i-th
The coolant water temperature that degree, i+1 calculate the moment determines that the heat exchange power that i+1 calculates the paraffin at moment includes：
Determined for the i-th calculating moment based on the paraffin temperature and the coolant water temperature at i+1 calculating moment at identified i-th calculating moment
Paraffin temperature and i+1 calculate the moment coolant water temperature between temperature deviation；
Determine that i+1 calculates the heat exchange power of the paraffin at moment based on identified temperature deviation and preset third property list,
The preset third property list characterizes the correspondence between different temperature deviations and the heat exchange power of paraffin.
9. according to the method described in claim 1, it is characterized in that, the paraffin temperature change for calculating the moment according to i-th+2
Value estimates the aperture of the thermostat at the i-th+2 calculating moment, including：
I-th is determined according to the coolant water temperature of the paraffin temperature change value at the i-th+2 calculating moment and the engine at the i-th+2 calculating moment
+ 2 calculate the paraffin temperature at moment；
Estimated for the i-th+2 calculating moment based on the paraffin temperature at the identified i-th+2 calculating moment and preset 4th property list
The aperture of thermostat, preset 4th property list characterize the corresponding pass between different paraffin temperature and the aperture of thermostat
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711419657.1A CN108278151B (en) | 2017-12-25 | 2017-12-25 | Opening degree estimation method of electric heating thermostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711419657.1A CN108278151B (en) | 2017-12-25 | 2017-12-25 | Opening degree estimation method of electric heating thermostat |
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| CN108278151B CN108278151B (en) | 2020-05-22 |
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| CN201711419657.1A Expired - Fee Related CN108278151B (en) | 2017-12-25 | 2017-12-25 | Opening degree estimation method of electric heating thermostat |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112163270A (en) * | 2020-09-04 | 2021-01-01 | 中国第一汽车股份有限公司 | CFD automatic modeling and analyzing system and method based on ANSA and StarCCM + platform |
| CN113027591A (en) * | 2021-03-31 | 2021-06-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
| CN113168195A (en) * | 2018-10-05 | 2021-07-23 | 法国诺华公司 | Thermostatic valve and vehicle comprising said valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493863A (en) * | 2011-12-26 | 2012-06-13 | 潍柴动力股份有限公司 | Thermostat and engine cooling system |
| CN202351063U (en) * | 2011-11-07 | 2012-07-25 | 玉柴联合动力股份有限公司 | Detector for thermostat |
| DE102011114308A1 (en) * | 2011-09-23 | 2013-03-28 | Audi Ag | Valve device for drive device, has non-return valve allowing flow only from direction of supply line, and switching element controlling thermostat valve and arranged in or at intersection of lines in which valves are provided |
| CN103670656A (en) * | 2012-09-13 | 2014-03-26 | 北京汽车动力总成有限公司 | Thermostat |
| CN203809097U (en) * | 2014-04-02 | 2014-09-03 | 广西玉柴机器股份有限公司 | Intelligent thermal management system of diesel engine |
| CN106285907A (en) * | 2016-10-19 | 2017-01-04 | 潍柴动力股份有限公司 | The control method of a kind of engine temperature, Apparatus and system |
-
2017
- 2017-12-25 CN CN201711419657.1A patent/CN108278151B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011114308A1 (en) * | 2011-09-23 | 2013-03-28 | Audi Ag | Valve device for drive device, has non-return valve allowing flow only from direction of supply line, and switching element controlling thermostat valve and arranged in or at intersection of lines in which valves are provided |
| CN202351063U (en) * | 2011-11-07 | 2012-07-25 | 玉柴联合动力股份有限公司 | Detector for thermostat |
| CN102493863A (en) * | 2011-12-26 | 2012-06-13 | 潍柴动力股份有限公司 | Thermostat and engine cooling system |
| CN103670656A (en) * | 2012-09-13 | 2014-03-26 | 北京汽车动力总成有限公司 | Thermostat |
| CN203809097U (en) * | 2014-04-02 | 2014-09-03 | 广西玉柴机器股份有限公司 | Intelligent thermal management system of diesel engine |
| CN106285907A (en) * | 2016-10-19 | 2017-01-04 | 潍柴动力股份有限公司 | The control method of a kind of engine temperature, Apparatus and system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113168195A (en) * | 2018-10-05 | 2021-07-23 | 法国诺华公司 | Thermostatic valve and vehicle comprising said valve |
| US20210388753A1 (en) | 2018-10-05 | 2021-12-16 | Novares France | Thermostatic valve and vehicle comprising said valve |
| US11952933B2 (en) | 2018-10-05 | 2024-04-09 | Novares France | Thermostatic valve and vehicle comprising said valve |
| CN112163270A (en) * | 2020-09-04 | 2021-01-01 | 中国第一汽车股份有限公司 | CFD automatic modeling and analyzing system and method based on ANSA and StarCCM + platform |
| CN113027591A (en) * | 2021-03-31 | 2021-06-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
| CN113027591B (en) * | 2021-03-31 | 2022-10-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
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| CN108278151B (en) | 2020-05-22 |
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