CN107701292A - A kind of expansion water tank cover, expansion tank and its control method of the anti-scald in engine high-temperature - Google Patents
A kind of expansion water tank cover, expansion tank and its control method of the anti-scald in engine high-temperature Download PDFInfo
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- CN107701292A CN107701292A CN201711143279.9A CN201711143279A CN107701292A CN 107701292 A CN107701292 A CN 107701292A CN 201711143279 A CN201711143279 A CN 201711143279A CN 107701292 A CN107701292 A CN 107701292A
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/0204—Filling
- F01P11/0209—Closure caps
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/0204—Filling
- F01P11/0209—Closure caps
- F01P11/0247—Safety; Locking against opening
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- 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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
-
- 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
- F01P2023/00—Signal processing; Details thereof
- F01P2023/08—Microprocessor; Microcomputer
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of expansion water tank cover of the anti-scald in engine high-temperature, including：Housing, it has inside groove, and the housing upper is provided with through hole, and is connected with the inside groove, and bottom is provided with ring spring；Electromagnet, it is arranged on the inside groove top；Push rod, its top are provided with magnet, can attract or separate with the electromagnetism mates, bottom is provided with fluted disc, and the push rod relatively described housing can be slided up and down in the inside groove, and sliding position is determined by the ring spring；Gear ring, it is fixed on water tank inner upper, can be engaged in the push rod upward sliding with the fluted disc and fix the fluted disc；Spring, it is arranged between the electromagnet and the push rod.The invention also discloses a kind of expansion tank of the anti-scald in engine high-temperature.The invention also discloses a kind of control method of the expansion tank of the anti-scald in engine high-temperature.
Description
Technical field
The present invention relates to engine water tank field, and in particular to a kind of expansion tank of the anti-scald in engine high-temperature
Lid, expansion tank and its control method.
Background technology
Engine high-temperature failure (being commonly called as boiling) is frequently encountered in vehicle traveling process, now the operating temperature of automobile will
Reach temperature too high for normal working temperature scope, have an impact machine normal work, damage the situation of machine.Lead
The reason for causing engine high-temperature is a lot, and in addition to hot weather, the running of air-conditioning excess load and heat dissipation element failure can also allow
Overall height temperature.Water when high temperature failure occurs for engine in expansion tank can seethe with excitement and internally produce certain pressure, but
Many drivers blindly open expansion water tank cover addition coolant immediately after engine high-temperature, and high temperature is cold under the effect of the pressure
But liquid, which can outwards spray, causes personnel to scald.Annual therefore class event, which causes driver to scald thing, often generation.
The content of the invention
The present invention has designed and developed a kind of expansion water tank cover of the anti-scald in engine high-temperature, goal of the invention of the invention
It is to prevent engine from expansion water tank cover during high temperature failure occurs and is blindly opened by driver, high temperature coolant, which sprays, causes scald
Problem.
The present invention has designed and developed a kind of expansion tank of the anti-scald in engine high-temperature, and goal of the invention of the invention is
Prevent engine from expansion tank during high temperature failure occurs and is blindly opened by driver, high temperature coolant, which sprays, causes asking for scald
Topic.
The present invention has designed and developed a kind of control method of the expansion tank of the anti-scald in engine high-temperature, of the invention
Goal of the invention is to be prejudged by pretreated pressure data and temperature data to whether electromagnet is powered, preferably to match somebody with somebody
Push rod in Heshui case is slided up and down, and prevents tank lid from blindly being opened by driver.
Technical scheme provided by the invention is：
A kind of expansion water tank cover of the anti-scald in engine high-temperature, including：
Housing, it has inside groove, and the housing upper is provided with through hole, and it is connected with the inside groove, and bottom is set
There is ring spring；
Electromagnet, it is arranged on the inside groove top；
Push rod, its top are provided with magnet, can attract or separate with the electromagnetism mates, bottom sets with teeth
Disk, the push rod relatively described housing can be slided up and down in the inside groove, and sliding position is determined by the ring spring；
Gear ring, it is fixed on water tank inner upper, can be engaged institute in the push rod upward sliding with the fluted disc
Fluted disc is stated to fix；
Spring, it is arranged between the electromagnet and the push rod.
Preferably, the housing is spirally connected with engine water tank.
Preferably, sealing ring is installed with the inside groove touching position at the top of the push rod.
A kind of expansion tank of the anti-scald in engine high-temperature, including described expansion water tank cover.
Preferably,
Temperature sensor, it is fixedly mounted on the water tank lower inside；
Pressure sensor, it is fixedly mounted on the water tank inner upper；
Controller, temperature sensor, the pressure sensor and the electromagnet described in its Electricity Federation.
A kind of control method of the expansion tank of the anti-scald in engine high-temperature, using described expansion tank, including
Following steps：
Step 1: temperature data, pressure data in collection water tank, and experience is carried out to pressure data and pre-processes to obtain
Pretreatment pressures data；
Step 2: by the temperature data and the Pretreatment pressures data transfer to controller；
Step 3, positive energization is carried out to the electromagnet by the controller or is reversely powered to judge, so it is right
The positive energization of the electromagnet or reversely energization are controlled；
Wherein, in the step 1, carrying out pretreatment to pressure data includes：
Pretreatment pressures P ' is calculated as below：
In formula, P ' is pressure in pretreatment water tank, and P is pressure in the water tank of actual monitoring, and T is in the water tank of actual monitoring
Temperature, T0Compare water the temperature inside the box for experience.
Preferably, in the step 3, reverse energization probability is exported using fuzzy control and then judged whether electricity
Magnet is reversely powered, and is comprised the following steps：
Rate of temperature change in Pretreatment pressures rate of change, water tank and reverse energization probability are converted into fuzzy domain respectively
In quantification gradation；
Rate of temperature change in Pretreatment pressures rate of change and water tank is inputted into fuzzy control model, is divided into 7 grades；
Fuzzy control model output is the reversely energization probability, is divided into 5 grades；
Whether the electromagnet is reversely powered according to the reversely energization probabilistic determination；
Wherein, the domain of the Pretreatment pressures rate of change is [- 1,1], and the domain of rate of temperature change is in the water tank
[- 1,1], the domain of the reversely energization probability is [0,1], if quantizing factor is all 1, sets the threshold of reverse energization probability probability
It is worth for a value in 0.45~0.58.
Preferably, the fuzzy set of the Pretreatment pressures rate of change is { NB, NM, NS, ZO, PS, PM, PB }, the water
The fuzzy set of the temperature inside the box rate of change is { NB, NM, NS, ZO, PS, PM, PB }, the fuzzy set of the reversely energization probability for S,
SM, M, MB, B }；Membership function selects trigonometric function.
Preferably, the rule that controls of the fuzzy control model is：
If Pretreatment pressures rate of change is PM or PB, rate of temperature change is PM or PB in water tank, then is reversely powered
Probability is B, i.e. data are exportable, and the controller is reversely powered to the electromagnet；
If Pretreatment pressures rate of change is NB, NM or NB, rate of temperature change is NB or NM in water tank, then reversely logical
Electric probability is S, i.e. data are not exportable, and the controller carries out positive energization to the electromagnet.
Preferably, data output is carried out according to the reversely energization probability, if the reversely energization probability output is S
Or SM, then data are not exportable；If the reversely energization probability output is MB or B, data are exportable；It is if described
Reverse energization probability output is M, then reverse energization probability is threshold value.
Present invention beneficial effect possessed compared with prior art：
1st, a kind of expansion tank lid arrangement of anti-scald in engine high-temperature of the present invention actively can be prevented effectively
Driver scalds event by coolant, more preferable compared to the light water case lid security for only providing word warning at present；
2nd, a kind of expansion tank lid arrangement of anti-scald in engine high-temperature of the present invention include electric control gear with
And traditional mechanical structure, being acted synergistically by both ensures to realize accurate control, and reliability is high, good operating stability；
3rd, after engine misses, electric control element is stopped, but the principle of Design of Mechanical Structure can still meet high temperature
The job requirement of locking, it will not cause after shutting down because electric control element power-off causes what tank lid was sprayed by unlatching high temperature coolant
Problem, strong applicability；
4th, the expansion tank lid arrangement of a kind of anti-scald in engine high-temperature of the present invention, in engine high-temperature
Tank lid can not rotate；Avoid the tank lid comprising pressure relief device and the possibility scalded during driver's pressure release by high-temperature steam be present
Property；
5th, the pressure data in water tank is pre-processed according to temperature different in water tank, the present invention, reduces number pressure
Fuzzy control is carried out according to error, while using the output of energization probability of the fuzzy control model to electromagnet, increases the standard of forecast
True property, the energization probability of electromagnet is improved, preferably to coordinate sliding up and down for push rod to meet the locking requirement of tank lid.
Brief description of the drawings
Fig. 1 is tank lid profile.
Fig. 2 is profile of the push rod in Fig. 1 along " A-A " face.
Fig. 3 is tank lid and water tank unmated profile when coolant temperature is low.
Profile after tank lid coordinates with water tank when Fig. 4 is engine high-temperature.
Along the partial cutaway view in " B-B " face when Fig. 5 is the gear-wheel gear-ring engagement in Fig. 4.
Fig. 6 is tank lid and water tank unmated profile when coolant temperature is low.
Profile after tank lid coordinates with water tank when Fig. 7 is engine high-temperature.
Along the partial cutaway view in " B-B " face when Fig. 8 is the gear-wheel gear-ring engagement in Fig. 7.
Fig. 9 is the membership function of Pretreatment pressures rate of change.
Figure 10 is the membership function of rate of temperature change in water tank.
Figure 11 is the membership function of reverse energization probability.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
The invention discloses a kind of expansion tank lid arrangement of the anti-scald in engine high-temperature；When high temperature occurs for engine
During failure, ECU selects the sense of current and size of current to electricity by reading the temperature sensor signal being arranged in expansion tank
Magnet is powered, so that electromagnet attracts each other with the push rod head with magnet；In addition, a level pressure can be produced in expansion tank
Power, the square push rod head in the two comprehensive function lower header lid overcome spring pre-tightening force compresses under gravitation and pressure effect
Spring moves up；The toothed disc of push rod end engages with the gear ring being fixed on inside water tank, and now expansion water tank cover can not revolve
Turn on and open；After water temperature reduction, ECU is by reading the temperature sensor signal being arranged in expansion tank, selection and phase before
The anti-sense of current is powered to electromagnet, so as to mutually exclusive with the push rod head with magnet, and is pressed inside cooling system
Power reduces, and is moved down in initial tension of spring and repulsion effect lower push-rod, gear disk detachment gear ring, tank lid can be with Unscrew
To meet daily coolant compensation and change demand.
As shown in Figures 1 to 3, the invention discloses a kind of expansion water tank cover of the anti-scald in engine high-temperature, tank lid
The profile of shell 100 is stepped cylinder, when upper cylindrical body act as increase rotation tank lid and hand frictional force, water tank
The lower end of cover housing 100 is provided with the screw thread for being connected with swelling water casing, and the top of water tank cover housing 100 is provided with through hole 160, interior
Portion is provided with the square inside groove 120 connected with through hole 160, and the square inner upper of inside groove 120 places electromagnet 111b, electromagnet
Electric wire outside can be connected to by through hole；The position of electromagnet is fixed by ring spring 140；Electromagnet arranged beneath has cylinder bullet
Spring 150, spring arranged beneath transfer bar mechanism；Through hole 160 ensures that pressure is atmospheric pressure above transfer bar mechanism upper surface；In square
Groove is opened up below groove, for placing ring spring 140；Push rod is by ladder square head 110, square shape sealing ring 130, upper table
Face magnet 111a and end gear 112a compositions, push rod head 110 is connected with end gear 112a by cylinder；Push rod head with
Rooved face ensures to seal by matching surface in square, while installs square shape sealing ring 130 again in push rod above-head
Ensure to seal；Push rod head can move up and down under electromagnet attraction and repulsive force and pressure differential effect in square inside groove.
As shown in Fig. 3~Fig. 5, the invention discloses a kind of expansion tank of the anti-scald in engine high-temperature, including make
With the expansion water tank cover of the present invention, in addition to temperature sensor 220 and ECU controllers；Temperature sensor 220 is arranged in water tank
The lower section of portion 210, ECU controllers Electricity Federation temperature sensor 220 and electromagnet 111b, are controlled according to water the temperature inside the box to electromagnet
System.
As can be seen from figures 6 to 8, in another embodiment, in addition to pressure sensor 230, it is arranged on 210 inside water tank
Top, now, ECU controllers while Electricity Federation temperature sensor 220, pressure sensor 230 and electromagnet 111b, according to water tank
Interior pressure, temperature are controlled to electromagnet.
The practical work process of anti-scald tank lid is specifically introduced with reference to two extreme positions above and below push rod.
Embodiment 1
The invention discloses a kind of control method of the expansion tank of the anti-scald in engine high-temperature, as shown in figure 3, setting
Temperature threshold is determined for 50 DEG C, and when water temperature is less than 50 DEG C, ECU reads the letter for the temperature sensor 220 being arranged in expansion tank
Number, judge that temperature is positive to electromagnet after being less than 50 DEG C and be powered；Electromagnet produces identical with push rod Surface Magnet after forward direction is powered
Magnetic pole, the two is mutually exclusive, and push rod produces the trend that moves downward, in addition, transfer bar mechanism is also by the cylindrical spring compressed
Elastic force and self gravitation effect；Lower limit position is in three's collective effect lower push-rod, lower limit position is by ring spring 140
Position determine；When installing tank lid, adjusting tank lid angle first makes push rod end gear 112a through the tooth on water tank
Enclose 112b；Now gear does not engage with gear ring and gear is below gear ring, and after rotating tank lid, tank lid passes through with water tank
Threaded connection, distance continues to increase between gear and gear ring, after screw thread screws, if the coolant now in expansion tank is normal temperature shape
State, then whole expansion tank working condition is as shown in Figure 3.
As shown in Figure 4, Figure 5, when higher than 50 DEG C especially high temperature failure occurs for engine water temperature, coolant temperature rise
Even seethe with excitement, 210 produce elevated pressures inside expansion tank, and pressure acts on push rod head undersurface 114, big with upper surface
Atmospheric pressure produces pressure difference, and push rod has the trend moved upwards under pressure；It is arranged in addition, ECU is read in expansion tank
Temperature sensor 220 signal, judge that temperature is higher than after 50 DEG C to the reverse energization of electromagnet, electromagnet produces after being reversely powered
The magnetic pole opposite with push rod Surface Magnet, the two attracts each other, and push rod produces the trend moved upwards；It is total in atmospheric pressure and gravitation
Under same-action, push rod moves upwards until when being compressed to maximum compression deformation quantity of cylindrical spring 150, push rod reach limes superiors
Position, the gear 112a of end engage with gear ring 112b fixed on water tank, that is, reach the working condition such as Fig. 4, if now
Tank lid is rotated, push rod is because gear-wheel gear-ring engagement can not rotate, and tank lid enclosure square inside groove and push rod head
Coordinate, due to for square structure, therefore will not also produce relative rotation therebetween；Therefore, in the case of Fig. 4, tank lid
Entirety can not rotate, namely tank lid can not be opened.
When liquid temperature degree to be cooled is reduced to less than 50 DEG C, 210 pressure are greatly reduced inside expansion tank, in repulsion, spring
Under elastic force and push rod self gravitation effect, push rod, which moves downward, arrives again at lower limit position, and now gear departs from gear ring, rotation
Turn tank lid after screw thread is all outwarded winding, gear is still below gear ring, i.e., gear ring will not interfere with the rotary motion of tank lid；This
When, adjustment tank lid angle makes push rod end gear 112a integrally to be opened through the gear ring 112b on water tank, tank lid
Meet daily coolant compensation and change demand.
When engine produces high temperature failure, most drivers can select switch-off, and now ECU can not obtain temperature letter
Breath, electromagnet power-off, now, device is changed into purely mechanic control structure；If water temperature is higher, inside expansion tank 210 produce compared with
High pressure, pressure act on push rod head undersurface 114, produce pressure difference with the atmospheric pressure of upper surface, push rod acts in pressure
Lower motion upwards, now the gear 112a of push rod end can still be engaged with the gear ring 112b of fixation on water tank, tank lid without
Method is opened.As temperature reduces, 210 pressure are greatly reduced inside expansion tank, in spring force and push rod self gravitation effect
Under, push rod, which moves downward, arrives again at lower limit position, and now tank lid can be opened, that is, can still play protection after shutting down drives
The effect of the person's of sailing safety.
Embodiment 2
As can be seen from figures 6 to 8, the invention also discloses a kind of controlling party of the expansion tank of the anti-scald in engine high-temperature
Method, comprise the following steps：
Step 1: temperature T, pressure P in collection water tank, and experience is carried out to pressure data and pre-processed
Pressure P '；
Step 2: temperature T and Pretreatment pressures P ' are transmitted to controller；
Step 3, positive energization is carried out to the electromagnet by ECU controllers or is reversely powered to judge, and then to electricity
The positive energization of magnet or reversely energization are controlled, and positive energization is carried out to electromagnet after ECU controllers are by judgement
When, electromagnet generation and push rod Surface Magnet identical magnetic pole after forward direction is powered, the two is mutually exclusive, and push rod is produced and moved downward
Trend；When being reversely powered to electromagnet after ECU controllers are by judgement, electromagnet generation and push rod after being reversely powered
The opposite magnetic pole of Surface Magnet, the two attracts each other, and push rod produces the trend moved upwards；
Wherein, in step 1, carrying out pretreatment to pressure data includes：
Pretreatment pressures P ' is calculated as below：
In formula, P ' is pressure in pretreatment water tank, and unit MPa, P are pressure in the water tank of actual monitoring, and unit is
MPa, T be actual monitoring water the temperature inside the box, unit for DEG C, T0Compare water the temperature inside the box for experience, unit is DEG C；In this implementation
In example, T0=50 DEG C.
In another embodiment, in step 3, reverse energization probability and then judgement are exported using fuzzy control model
Whether reverse energization data export, and comprise the following steps：Respectively by Pretreatment pressures rate of change EP, rate of temperature change E in water tankT
And reversely energization probability is converted to the quantification gradation in fuzzy domain；By Pretreatment pressures rate of change EPAnd water the temperature inside the box
Rate of change ETFuzzy control model is inputted, fuzzy control model output is reverse energization probability, and then carries out whether data export
Prediction, the threshold value of reverse energization probability be 0.45~0.58 in a value, if reversely energization probability reaches given threshold,
Then show that reverse energization probability data is exportable, be reversely powered, if reversely energization probability is not up to given threshold, table
Bright reversely energization probability data is not exportable, carries out positive energization；In the present embodiment, in order to ensure the precision of control, it is made
It can well be controlled in different environments, according to repetition test, threshold value is defined as 0.51.
Pretreatment pressures rate of change EPExcursion be [- 1,1], rate of temperature change E in water tankTExcursion for [-
1,1], it is all 1, therefore, Pretreatment pressures rate of change E to set quantizing factorPAnd the domain of rate of temperature change is distinguished in water tank
For [- 1,1] and [- 1,1], the domain of reverse energization probability is [0,1]；In order to ensure the precision of control, make it in different rings
It can be controlled well under border, according to repetition test, at last most Pretreatment pressures rate of change EPExcursion be divided into 7
Individual grade, fuzzy set are { NB, NM, NS, ZO, PS, PM, PB }, and NB represents negative big, and NM represents negative medium, and NS represents to bear small, ZO tables
Show that zero, PS represents just small, PM represents just medium, and PB represents honest；Rate of temperature change E in water tankTExcursion be divided into 7 etc.
Level, fuzzy set are { NB, NM, NS, ZO, PS, PM, PB }, and NB represents negative big, and NM represents negative medium, and NS represents negative small, and ZO is represented
Zero, PS represent just small, and PM represents just medium, and PB represents honest；The reverse energization probability of output is divided into 5 grades, and fuzzy set is
{ S, SM, M, MB, B }, S represent small, and SM represents smaller, and M represents medium, and MB represents larger, and B represents big；Membership function is selected
Triangular membership, as shown in Fig. 9,10,11.
The rule selection experience that controls of fuzzy control model is：
If Pretreatment pressures rate of change EPTo be honest or just medium, rate of temperature change E in water tankTFor honest or center
Deng then reverse energization probability is big, i.e. data are exportable, and now, ECU controllers are reversely powered to electromagnet；
If Pretreatment pressures rate of change EPFor negative big, negative medium or negative small, rate of temperature change E in water tankTTo be negative big or
Negative medium, then reverse energization probability is small, i.e., data are not exportable, and now ECU controllers carry out positive energization to electromagnet.
That is, if reversely energization probability is " small or smaller ", data are not exportable, now ECU controllers pair
Electromagnet carries out positive power control；If reverse energization probability is " big or larger ", data are exportable, and now ECU is controlled
Device carries out reverse power control to electromagnet；If reverse energization probability is " medium ", reverse energization probability is threshold value, such a
Situation, if the temperature or pressure in water tank vary slightly, reversely energization or positive both feelings that are powered will necessarily be formed
The switching of condition；Specific fuzzy control rule is as shown in table 1.
The fuzzy control rule of table 1
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the legend with description.
Claims (10)
- A kind of 1. expansion water tank cover of the anti-scald in engine high-temperature, it is characterised in that including：Housing, it has inside groove, and the housing upper is provided with through hole, and it is connected with the inside groove, and bottom is provided with only Dynamic spring；Electromagnet, it is arranged on the inside groove top；Push rod, its top are provided with magnet, can attract or separate with the electromagnetism mates, and bottom is provided with fluted disc, The push rod relatively described housing can be slided up and down in the inside groove, and sliding position is determined by the ring spring；Gear ring, it is fixed on water tank inner upper, can be engaged the tooth in the push rod upward sliding with the fluted disc Disk is fixed；Spring, it is arranged between the electromagnet and the push rod.
- 2. as claimed in claim 1 in engine high-temperature anti-scald expansion water tank cover, it is characterised in that the housing with Engine water tank is spirally connected.
- 3. as claimed in claim 1 or 2 in engine high-temperature anti-scald expansion water tank cover, it is characterised in that it is described to push away Sealing ring is installed with the inside groove touching position at the top of bar.
- 4. a kind of expansion tank of the anti-scald in engine high-temperature, it is characterised in that including swollen as described in claim 1-3 Swollen tank lid.
- 5. as claimed in claim 4 in engine high-temperature anti-scald expansion tank, it is characterised in thatTemperature sensor, it is fixedly mounted on the water tank lower inside；Pressure sensor, it is fixedly mounted on the water tank inner upper；Controller, temperature sensor, the pressure sensor and the electromagnet described in its Electricity Federation.
- 6. a kind of control method of the expansion tank of the anti-scald in engine high-temperature, it is characterised in that using such as claim Expansion tank described in 4-5, comprises the following steps：Step 1: temperature data, pressure data in collection water tank, and experience is carried out to pressure data and pre-processes to obtain pre- place Manage pressure data；Step 2: by the temperature data and the Pretreatment pressures data transfer to controller；Step 3, positive energization is carried out to the electromagnet by the controller or is reversely powered to judge, and then to described The positive energization of electromagnet or reversely energization are controlled；Wherein, in the step 1, carrying out pretreatment to pressure data includes：Pretreatment pressures P ' is calculated as below：<mrow> <msup> <mi>P</mi> <mo>&prime;</mo> </msup> <mo>=</mo> <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mfrac> <mi>P</mi> <mn>9.3</mn> </mfrac> <mo>&lsqb;</mo> <mn>0.142</mn> <mi>ln</mi> <mrow> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> </mrow> <mo>-</mo> <mn>0.181</mn> <msup> <mrow> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>+</mo> <mn>0.199</mn> <mrow> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> </mrow> <mo>+</mo> <mn>9.365</mn> <mo>&rsqb;</mo> <mo>,</mo> <mi>T</mi> <mo><</mo> <mn>40</mn> </mtd> </mtr> <mtr> <mtd> <mfrac> <mi>P</mi> <mn>9.15</mn> </mfrac> <mo>&lsqb;</mo> <mo>-</mo> <mn>0.102</mn> <msup> <mrow> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>+</mo> <mn>0.323</mn> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> <mo>+</mo> <mn>9.147</mn> <msup> <mrow> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> </mrow> <mn>0.003</mn> </msup> <mo>&rsqb;</mo> <mo>,</mo> <mn>40</mn> <mo>&le;</mo> <mi>T</mi> <mo><</mo> <mn>85</mn> </mtd> </mtr> <mtr> <mtd> <mfrac> <mi>P</mi> <mn>8.93</mn> </mfrac> <mo>&lsqb;</mo> <mo>-</mo> <mn>1.607</mn> <msup> <mrow> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> </mrow> <mn>2</mn> </msup> <mo>+</mo> <mn>6.587</mn> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> <mo>+</mo> <mn>1.664</mn> <msup> <mi>e</mi> <mrow> <mn>0.037</mn> <mrow> <mo>(</mo> <mfrac> <mi>T</mi> <msub> <mi>T</mi> <mn>0</mn> </msub> </mfrac> <mo>)</mo> </mrow> </mrow> </msup> <mo>&rsqb;</mo> <mo>,</mo> <mi>T</mi> <mo>&GreaterEqual;</mo> <mn>85</mn> </mtd> </mtr> </mtable> </mfenced> <mo>,</mo> </mrow>In formula, P ' is pressure in pretreatment water tank, and P is pressure in the water tank of actual monitoring, and T is temperature in the water tank of actual monitoring Degree, T0Compare water the temperature inside the box for experience.
- 7. as claimed in claim 6 in engine high-temperature the expansion tank of anti-scald control method, it is characterised in that In the step 3, reverse energization probability is exported using fuzzy control and then judges whether electromagnet being reversely powered, is wrapped Include following steps：Rate of temperature change in Pretreatment pressures rate of change, water tank and reverse energization probability are converted in fuzzy domain respectively Quantification gradation；Rate of temperature change in Pretreatment pressures rate of change and water tank is inputted into fuzzy control model, is divided into 7 grades；Fuzzy control model output is the reversely energization probability, is divided into 5 grades；Whether the electromagnet is reversely powered according to the reversely energization probabilistic determination；Wherein, the domain of the Pretreatment pressures rate of change is [- 1,1], in the water tank domain of rate of temperature change for [- 1, 1], the domain of the reversely energization probability is [0,1], if quantizing factor is all 1, sets the threshold value of reverse energization probability as 0.45 A value in~0.58.
- 8. as claimed in claim 7 in engine high-temperature the expansion tank of anti-scald control method, it is characterised in that institute The fuzzy set for stating Pretreatment pressures rate of change is { NB, NM, NS, ZO, PS, PM, PB }, and rate of temperature change is fuzzy in the water tank Collect for { NB, NM, NS, ZO, PS, PM, PB }, the fuzzy set of the reversely energization probability is { S, SM, M, MB, B }；Membership function is equal From trigonometric function.
- 9. as claimed in claim 8 in engine high-temperature the expansion tank of anti-scald control method, it is characterised in that institute The rule that controls for stating fuzzy control model is：If Pretreatment pressures rate of change is PM or PB, rate of temperature change is PM or PB in water tank, then reverse energization probability For B, i.e. data are exportable, and the controller is reversely powered to the electromagnet；If Pretreatment pressures rate of change is NB, NM or NB, rate of temperature change is NB or NM in water tank, then is reversely powered general Rate is S, i.e. data are not exportable, and the controller carries out positive energization to the electromagnet.
- 10. as claimed in claim 9 in engine high-temperature the expansion tank of anti-scald control method, it is characterised in that Data output is carried out according to the reversely energization probability, if the reversely energization probability output is S or SM, data can not Output；If the reversely energization probability output is MB or B, data are exportable；If the reversely energization probability output For M, then reverse energization probability is threshold value.
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| CN110966080B (en) * | 2018-09-30 | 2021-11-05 | 北汽福田汽车股份有限公司 | Cover body structure, auxiliary water tank, vehicle and locking method of cover body structure of auxiliary water tank |
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