EP2839130A1 - Procede et dispositif de thermoregulation d'un moteur de vehicule automobile - Google Patents
Procede et dispositif de thermoregulation d'un moteur de vehicule automobileInfo
- Publication number
- EP2839130A1 EP2839130A1 EP13719919.6A EP13719919A EP2839130A1 EP 2839130 A1 EP2839130 A1 EP 2839130A1 EP 13719919 A EP13719919 A EP 13719919A EP 2839130 A1 EP2839130 A1 EP 2839130A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- fan
- engine
- air
- states
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 title abstract description 3
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 230000006870 function Effects 0.000 claims description 65
- 238000013507 mapping Methods 0.000 claims description 17
- 238000004364 calculation method Methods 0.000 claims description 16
- 230000028016 temperature homeostasis Effects 0.000 claims description 15
- 239000002826 coolant Substances 0.000 claims description 9
- 239000013529 heat transfer fluid Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 27
- 238000010586 diagram Methods 0.000 description 9
- 238000013021 overheating Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
-
- 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
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
-
- 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
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
-
- 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
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
-
- 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
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/46—Engine parts 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
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/50—Temperature using two or more temperature sensors
Definitions
- the present invention relates to a method and a device for thermal regulation of an engine of a vehicle of the automotive type.
- the technical field of the invention is, in general, that of vehicle engines. More particularly, the invention relates to the thermoregulation of electric motors of motor vehicles. [03] BACKGROUND OF THE INVENTION
- thermoregulation systems are used to cool such engines. Generally, it is circulated a coolant liquid, or coolant, to evacuate to the outside of the vehicle the thermal energy produced by these electronic components and electrical machines.
- a coolant liquid or coolant
- US4475485 discloses a particular apparatus for thermoregulation, by circulation of coolant, of the engine of a motor vehicle. The circulation of this liquid is regulated, by means of actuators, on the basis of measurements of the temperature of said liquid.
- the invention proposes to solve the aforementioned technical problem using the concept of fuzzy logic.
- several criteria are determined for accurately anticipating and estimating, based on the technical knowledge acquired in this field, the thermoregulation requirements of an engine and thus optimizing the use of actuators of a thermoregulation device of said engine. .
- the subject of the invention is therefore a method of thermoregulation of a vehicle engine, in which
- a coolant is circulated by means of a pump in a heat exchanger and close to the engine
- said air exchanger is air-swept by means of a fan
- the said fan is piloted by applying to it said speed synthesized instruction and the said pump by applying to it the said synthesized flow instruction.
- thermoregulation of the engine adjusts the thermoregulation of the engine during its use, which increases its efficiency and durability and represents a gain in electrical energy consumed by the pump and the fan.
- the fan is supplied with air, by means of movable flaps arranged at the front of the vehicle,
- the nominal and safe instructions are synthesized so as to obtain a third synthesized instruction
- the calculation of the air flow through the exchanger consists of
- the synthesized setpoint for positioning the flaps and said second mapping calculating said flow rate of the air flowing through the heat exchanger.
- fuzzification consists in determining, by means of membership functions, the degree, or percentage, of belonging of a variable to predefined states, or linguistic variables, and defuzzification consists of transforming this degree of membership in at least one set value to be applied to a control device. Thanks to these provisions, it avoids the extremely long and tedious development of complex mathematical models.
- a temperature is measured at a first location of the engine
- a temperature is measured at a second location of the engine
- the determination of the temperature of said engine is to compare the temperatures measured at both locations and to select the most critical.
- the engine temperature should be measured at all locations that may overheat.
- thermoregulation device of a vehicle engine said device comprising
- a pump adapted to circulate, a coolant in a heat exchanger and close to said engine
- a calculator adapted to calculate a flow rate of the air passing through said exchanger
- said calculator is further adapted to,
- the invention also relates to an automobile type vehicle comprising such a device.
- FIG. 1 a schematic representation of an overview of an embodiment of a thermoregulation device according to the invention
- FIG. 2 a representation, in the form of a logic diagram, of one embodiment of a thermoregulation process according to the invention
- FIG. 3 a representation, in the form of a logic diagram, of a first embodiment of a step of calculating nominal values of the method according to the invention
- FIG. 4 a three-dimensional graphical representation, in oblique perspective, of an embodiment of a first mapping used in the first embodiment of the step of calculating the nominal instructions;
- FIG. 5 a three-dimensional graphical representation, in oblique perspective, of an embodiment of a second cartography used in the first embodiment of the step of calculating the nominal instructions;
- FIG. 6 a three-dimensional graphical representation, in oblique perspective, of an embodiment of a third cartography used in the first embodiment of the step of calculating the nominal instructions;
- FIG. 7 a representation, in the form of a logic diagram, of a second embodiment of the step of calculating the nominal instructions
- FIG. 8 a two-dimensional graphical representation of an embodiment of membership functions of a temperature of a heat transfer fluid to fourth states
- FIG. 9 a two-dimensional graphical representation of an embodiment of membership functions of an air flow at fifth states
- Figure 1 1 a graphic representation in two dimensions, an embodiment of membership functions of a fluid flow to seventh states;
- FIG. 12 a two-dimensional graphical representation of an embodiment of membership functions of a flap position with eighth states
- FIG. 13 a representation, in the form of a table, of an embodiment of a classification of the states of the speed of rotation, of the fluid flow rate and of the position of the flaps as a function of the first and second states;
- FIG. 14 a representation, in the form of a logic diagram, of a first embodiment of a step of calculating safety instructions of the method according to the invention
- FIG. 15 a representation, in the form of a logic diagram, of a second embodiment of the step of calculating security instructions
- FIG. 16 a two-dimensional graphic representation of an embodiment of membership functions of the temperature of the motor to first states
- FIG. 1 7 a two-dimensional graphical representation of an embodiment of membership functions of a gradient of the engine temperature to second states
- FIG. 18 a two-dimensional graphic representation of an embodiment of membership functions of a control parameter with third states
- FIG. 19 a representation, in the form of a table, of an embodiment of a classification of the states of the parameter as a function of the first and second states.
- FIG. 1 schematically represents an overall view of an embodiment of a device 15 for thermoregulation of an electric motor. 26 with electronic components 22 and electrical machines 24.
- the device 15 comprises a circuit traversed by a coolant 20, here a coolant, which is driven by a pump 34.
- the circuit comprises a heat exchanger 32, here a radiator, and is arranged near the engine 26.
- the pump 34 is driven by an application program 58 of a program memory 52 of a computer 40.
- the program memory 52 comprises a program 54 for measuring and a program 56 for calculation.
- the computer 40 comprises a data memory 50 and a microprocessor 60 connected, via a multiplexed network of the CAN bus type, to an interface 53 and to the program memory 52.
- the microprocessor 60 is adapted to direct the entire computer. 40.
- the device further comprises a sensor 42 of temperature T 0 Nq of the liquid 20 and means for determining a temperature T ° mo t_ d and the motor 26.
- a sensor 36 measures a temperature T ° 1, at a first place of the motor 26, the electronic components 22 and a sensor 38 measures, at a second location of the engine 26, a temperature T ° 2 of the electric machines 24.
- the control program 56 determines the temperature T ° mo t_dét of the engine 26 in comparing temperatures T ° 1 and T ° 2 and selecting the most critical, that is to say the highest.
- the computer can average the measured temperatures.
- these sensors are much more numerous so as to detect any point overheating of the motor 26.
- the temperature T ° mo t_dét of the engine is calculated by the computer 40 as a function of the temperature ° iiq_ me s measured and a set Qnq liquid flow rate 20 out of the pump 34 using predetermined mappings and stored in a data memory 50 of said calculator. These maps are described below.
- the device 15 further comprises a sensor 44 of rotation speed of a wheel 46 of the vehicle, a fan 28 adapted to sweep air radiator 32, movable flaps 30 arranged at the front of the vehicle and adapted supplying said fan with air.
- the sensors 36, 38, 42 and 44 as well as the actuators 28, 30 and 34, also being connected by a CAN bus, are adapted to be directed by the computer 40.
- FIG. 2 represents, in the form of a logic diagram, an embodiment of a method 100 for thermoregulating the motor 26.
- the method 100 comprises steps in which the sensor 42 measures 108 the temperature T 0 Nq _ mes of the liquid 20 and the program 56
- synthesizes 160, 162 and 164 said nominal and safe instructions so as to obtain three instructions synthesized VMAX ro t_ C ons,
- iq _cons and PN CO ns and safe instructions VSrot cons, QSII q _ C ons and PS CO ns consist in comparing in pairs said instructions and to select the largest that become VMAX ro t_ C ons,
- the method 100 comprises later steps in which the program 58 pilot 1 18
- the flaps 30 by applying to them the synthesized instruction PMAXcons to supply said fan with air, and then
- the pump 34, the flaps 30 and the fan 28 are driven simultaneously or in a different order.
- a second step comparing the vehicle speed Vthi and the equivalent speed V air _eq air blown by said fan and selecting 130 the largest that becomes the resulting air velocity V
- it is predefined 131 in factory an air passage surface of the radiator 32 that is stored in a part 51 of the data memory 50, and a mapping relating the resulting air velocity V air _ res , the position P flaps 30 and a rad air velocity of the air leaving the radiator 32, and then deduced 1 1 0 of said mapping and the setpoint synthesized PMAX C ons said air flow.
- Figure 3 shows, in the form of a logic diagram, a first embodiment of a calculation step 1 09 nominal set of the method according to the invention.
- iq _cons and PN CO ns consists of
- the three mappings 1 33, 1 34 and 1 35 here predetermined relate the air flow rate Q through the radiator 32, the temperature T 0 Nq of the liquid 20 and
- Figure 7 shows, in the form of a logic diagram, a second embodiment of the step of calculating the nominal instructions.
- the calculation 109 of the nominal instructions consists, initially, in
- predetermining 150 a first classification, represented in the form of a table in FIG. 13, of said states of flow Q
- the calculation 109 of the nominal instructions consists, in a second step, in
- FIGS. 14 and 15 respectively represent, in the form of logic diagrams, a first and a second embodiment of the step of calculating the safety instructions of the method 1 00 according to the invention.
- the calculation 1 05 of the safety instructions consists of
- the three mappings here predetermined relate the temperature T ° mo t of the motor 26, its gradient AT ° mo t and
- this predetermination 1 36 it performs previously, by the Mamdani method, fuzzification and defuzzification steps for a set of temperature values T ° mo t of the motor 26 and its gradient AT ° mo t with linear membership functions.
- the shutters 30 are closed, the rotation of the fan 28 is blocked and the flow rate Q is varied; iq of the pump, the pump 34 is closed, the rotation of the fan 28 is blocked and the position P of the flaps 30 is varied, and
- track 1 05 of the safety instructions consists, in a first time,
- predetermining a second classification represented in the form of a table in FIG. 19, of the states C1 and CA of said parameter as a function of said sixth and seventh states.
- the computation 1 05 of the safety instructions consists, in a second step, in
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1253540A FR2989424B1 (fr) | 2012-04-17 | 2012-04-17 | Procede et dispositif de thermoregulation d'un moteur de vehicule automobile |
| PCT/FR2013/050635 WO2013156700A1 (fr) | 2012-04-17 | 2013-03-25 | Procede et dispositif de thermoregulation d'un moteur de vehicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2839130A1 true EP2839130A1 (fr) | 2015-02-25 |
Family
ID=48237076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13719919.6A Withdrawn EP2839130A1 (fr) | 2012-04-17 | 2013-03-25 | Procede et dispositif de thermoregulation d'un moteur de vehicule automobile |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2839130A1 (fr) |
| CN (1) | CN104411940B (fr) |
| FR (1) | FR2989424B1 (fr) |
| WO (1) | WO2013156700A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017067016A (ja) * | 2015-09-30 | 2017-04-06 | アイシン精機株式会社 | 冷却制御装置 |
| US10486542B2 (en) * | 2017-07-12 | 2019-11-26 | Ford Global Technologies, Llc | Battery thermal conditioning pump control for electric vehicle |
| CN112060903B (zh) * | 2020-08-25 | 2021-10-19 | 长城汽车股份有限公司 | 一种车辆冷却控制方法、系统及车辆 |
| DE102022132340A1 (de) * | 2022-12-06 | 2024-06-06 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Temperieren einer elektrischen Antriebseinheit eines Kraftfahrzeugs, insbesondere eines Kraftwagens |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58124017A (ja) | 1982-01-19 | 1983-07-23 | Nippon Denso Co Ltd | エンジンの冷却系制御装置 |
| DE19508102C1 (de) * | 1995-03-08 | 1996-07-25 | Volkswagen Ag | Verfahren zur Regelung eines Kühlkreislaufes eines Verbrennungskraftmotors, insbesondere für Kraftfahrzeuge |
| DE19710384A1 (de) * | 1997-03-13 | 1998-09-17 | Behr Gmbh & Co | Drehzahlregeleinrichtung für eine Flüssigkeitsreibungskupplung |
| US20040069546A1 (en) * | 2002-10-15 | 2004-04-15 | Zheng Lou | Hybrid electrical vehicle powertrain thermal control |
| DE102008014518A1 (de) * | 2008-03-15 | 2009-09-17 | Daimler Ag | Kühlsystem für eine Brennkraftmaschine und Verfahren zum Steuern eines Steuergeräts eines Kühlsystems |
| JP5056725B2 (ja) * | 2008-11-04 | 2012-10-24 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
| CN203271899U (zh) * | 2013-04-16 | 2013-11-06 | 上海汽车集团股份有限公司 | 汽车冷却风扇控制装置 |
| CN203271897U (zh) * | 2013-05-13 | 2013-11-06 | 徐州徐工挖掘机械有限公司 | 液压挖掘机散热风扇驱动装置 |
| CN103397929A (zh) * | 2013-08-02 | 2013-11-20 | 王桂岳 | 一种电控硅油风扇离合器 |
| CN103397928B (zh) * | 2013-08-06 | 2015-05-27 | 无锡创晨科技有限公司 | 发动机热管理电磁调速节能风扇系统 |
-
2012
- 2012-04-17 FR FR1253540A patent/FR2989424B1/fr not_active Expired - Fee Related
-
2013
- 2013-03-25 WO PCT/FR2013/050635 patent/WO2013156700A1/fr not_active Ceased
- 2013-03-25 EP EP13719919.6A patent/EP2839130A1/fr not_active Withdrawn
- 2013-03-25 CN CN201380020753.2A patent/CN104411940B/zh not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2013156700A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2989424A1 (fr) | 2013-10-18 |
| CN104411940B (zh) | 2017-08-11 |
| FR2989424B1 (fr) | 2015-10-02 |
| WO2013156700A1 (fr) | 2013-10-24 |
| CN104411940A (zh) | 2015-03-11 |
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