EP1266201A1 - Procede de degradation acceleree d'un organe destine a etre traverse par du liquide de refroidissement dans un vehicule, et installation de mise en oeuvre de ce procede - Google Patents
Procede de degradation acceleree d'un organe destine a etre traverse par du liquide de refroidissement dans un vehicule, et installation de mise en oeuvre de ce procedeInfo
- Publication number
- EP1266201A1 EP1266201A1 EP01917163A EP01917163A EP1266201A1 EP 1266201 A1 EP1266201 A1 EP 1266201A1 EP 01917163 A EP01917163 A EP 01917163A EP 01917163 A EP01917163 A EP 01917163A EP 1266201 A1 EP1266201 A1 EP 1266201A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant
- installation according
- flow
- installation
- circuit
- 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- Withdrawn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 32
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 10
- 230000015556 catabolic process Effects 0.000 title claims abstract description 9
- 239000000110 cooling liquid Substances 0.000 title claims abstract description 7
- 238000009434 installation Methods 0.000 title claims description 24
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000002826 coolant Substances 0.000 claims description 35
- 239000000523 sample Substances 0.000 claims description 22
- 210000000056 organ Anatomy 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- -1 sodium chloride Chemical class 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Definitions
- Certain components of the cooling circuit of a motor vehicle powered by a heat engine are made of materials obtained from metal alloys which, by dint of being traversed by the coolant, can pierce and give rise to leakage of this liquid. This is the case in particular of the air heater, intended to heat the passenger compartment of the motor vehicle, and of the radiator, intended to cool the heat engine.
- the object of the present invention is to provide shorter tests which are more faithful to the modes of degradation observed in practice.
- said flow is passed from said zero value to said maximum value in a period of between 30 and 60 seconds
- said maximum value is between 2000 and 2500 1 / h
- said coolant is kept at a substantially constant temperature, said temperature is around 95 ° C., said cooling liquid is heated slowly before any manipulation,
- said parameters include the flow rate of said coolant, its temperature and pressure, said method is implemented automatically by computer means.
- the present invention also aims to provide an installation for implementing the aforementioned method.
- This object of the invention is achieved with an installation for implementing a method in accordance with the above for testing a member intended to be traversed by coolant in a motor vehicle with an internal combustion engine, comprising means for making circulating said coolant in said member, characterized in that said means are adapted to vary over time the flow rate of said liquid in said member.
- the said means comprise a supply circuit comprising a pump whose speed can be modulated over time
- the member to be tested 1 may for example be an air heater or a cooling circuit radiator of a vehicle with thermal propulsion, without this being limiting.
- the installation according to the invention proper comprises a cooling liquid supply circuit 3 to which the member 1 is coupled.
- This supply circuit 3 preferably comprises a heating tank 5 intended to be connected to the member 1 by an inlet circuit 7 and by a return circuit 9, these circuits being formed for example by rubber hoses vulcanized with peroxides.
- a second pressure probe 21 and an expansion vessel 23 are placed in this order upstream of the heating tank 5 on the return circuit 9.
- a second temperature probe 25 is placed on the heating tank 5.
- the accuracy of the flow meter 15 is preferably of the order of 3%, and that of the temperature probes 17, 25 and the pressure probes 19, 21 is preferably of the order of 1%.
- the electric motor 13, the flow meter 15, the temperature probes 17, 25 and the pressure probes 19, 21 are interfaced with a control computer 27 by means of electrical connections 29.
- the circuit 3 When it is connected to the member to be tested 1, the circuit 3 is filled with a coolant preferably comprising approximately 40% deionized water and preferably having an electrical resistance of approximately 750 KOhm.
- this coolant can be polluted by certain chemical compounds such as sodium chloride and / or by solid particles such as iron filings.
- the volume of this liquid is in a range from 7 to 20 liters.
- the control computer 27 varies the speed of the electric motor 13 over time, so that the flow of coolant circulating in the circuit 3 and in the member to be tested 1 (in the direction of the arrow F) also varies over time.
- the speed of the electric motor 13 varies periodically and, even more preferably, this speed changes periodically from a zero value to a maximum value. Even more preferably, in each period, the speed of the motor 13 is zero for approximately 2 minutes, then maximum for approximately 3 minutes.
- the speed of this motor is changed from zero to the maximum value in a period of between 30 and 60 seconds.
- this maximum value is adapted to generate a flow of coolant in the circuit 3 and in the member 1 which is between 2000 and 2500 l / h.
- the heating tank 5 is operated so that the coolant which reaches the member 1 is brought to a substantially constant temperature preferably around 95 ° C.
- the tank 5 is operated at low power to avoid damaging the coolant.
- the flow meter 15, the temperature probes 17, 25 and the pressure probes 19, 21 carry out measurements which are processed by the computer 27.
- the method according to the invention reproduces relatively faithful to the conditions to which the tested body 1 will be subjected in practice when it is installed in a motor vehicle.
- the variations in coolant flow induced by the variations in speed of the electric motor 13 satisfactorily reproduce the variations in coolant flow in a vehicle linked to variations in engine speed of this vehicle.
- the heating of the coolant by the tank 5 satisfactorily reproduces the heating of the coolant by the heat engine of a vehicle.
- the installation and the method according to the invention make it possible to degrade the organ to be tested according to a mode substantially in accordance with that actually observed in reality.
- the tests could be carried out without heating the coolant. In this case, however, results would be less faithful to reality.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0003658 | 2000-03-22 | ||
| FR0003658A FR2806795B1 (fr) | 2000-03-22 | 2000-03-22 | Procede de degradation acceleree d'un organe destine a etre traverse par du liquide de refroidissement dans un vehicule, et installation de mise en oeuvre de ce procede |
| PCT/FR2001/000793 WO2001071305A1 (fr) | 2000-03-22 | 2001-03-16 | Procede de degradation acceleree d'un organe destine a etre traverse par du liquide de refroidissement dans un vehicule, et installation de mise en oeuvre de ce procede |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1266201A1 true EP1266201A1 (fr) | 2002-12-18 |
Family
ID=8848379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01917163A Withdrawn EP1266201A1 (fr) | 2000-03-22 | 2001-03-16 | Procede de degradation acceleree d'un organe destine a etre traverse par du liquide de refroidissement dans un vehicule, et installation de mise en oeuvre de ce procede |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1266201A1 (fr) |
| FR (1) | FR2806795B1 (fr) |
| WO (1) | WO2001071305A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323245A (zh) * | 2013-06-29 | 2013-09-25 | 中国人民解放军国防科学技术大学 | 关节轴承的加速退化试验方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4390049A (en) * | 1978-05-22 | 1983-06-28 | Albertson Robert V | Apparatus for reciprocating liquid in a cooling system of an internal combustion engine |
| US4213474A (en) * | 1979-08-03 | 1980-07-22 | Frank Harrison | Vehicle radiator cleaning and testing system |
| FR2552227B3 (fr) * | 1983-09-15 | 1986-01-24 | Someth Sa | Procede et dispositif pour l'essai d'etancheite du circuit primaire d'une machine frigorifique a fluide frigorigene condensable |
| DE4039176C2 (de) * | 1990-12-06 | 1996-04-11 | Ver Energiewerke Ag | Verfahren zur Ermittlung und Bewertung geschädigter Rohre eines Rohrsystems |
| IT1293667B1 (it) * | 1997-08-01 | 1999-03-08 | Fiat Ricerche | Sistema di raffreddamento per un motore di autoveicolo. |
-
2000
- 2000-03-22 FR FR0003658A patent/FR2806795B1/fr not_active Expired - Fee Related
-
2001
- 2001-03-16 WO PCT/FR2001/000793 patent/WO2001071305A1/fr not_active Ceased
- 2001-03-16 EP EP01917163A patent/EP1266201A1/fr not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0171305A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2806795B1 (fr) | 2002-05-10 |
| FR2806795A1 (fr) | 2001-09-28 |
| WO2001071305A1 (fr) | 2001-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20020821 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MARCHAIS, OLIVIER |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: RENAULT S.A.S. |
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| RBV | Designated contracting states (corrected) |
Designated state(s): AT BE CH CY DE ES GB IT LI |
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| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| RBV | Designated contracting states (corrected) |
Designated state(s): BE DE ES GB IT |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: RENAULT S.A.S. |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20091009 |