WO2002007996A1 - Procede d'evaluation de l'autonomie d'un systeme de roulage a plat - Google Patents
Procede d'evaluation de l'autonomie d'un systeme de roulage a plat Download PDFInfo
- Publication number
- WO2002007996A1 WO2002007996A1 PCT/EP2001/008429 EP0108429W WO0207996A1 WO 2002007996 A1 WO2002007996 A1 WO 2002007996A1 EP 0108429 W EP0108429 W EP 0108429W WO 0207996 A1 WO0207996 A1 WO 0207996A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- run
- autonomy
- flat
- evaluating
- flat system
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0401—Signalling devices actuated by tyre pressure mounted on the wheel or tyre characterised by the type of alarm
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10027—Tires, resilient with wear indicating feature
Definitions
- the subject of the invention is a method for evaluating the autonomy of a run-flat system;
- the flat running system of a vehicle is understood to mean an assembly comprising at least for each wheel a pneumatic envelope, a deflation warning device and means for supporting the tread of the pneumatic envelope in the event of deflation of the envelope.
- the method according to the invention also makes it possible to evaluate the conditions for reuse of the run-flat system; these conditions - after running flat or at very low pressure - can be either the pure and simple reuse of the system as it is, after repair and re-inflation of the pneumatic envelope, or the change of tire, or the replacement of the tire. security support, or both.
- Tires have also been imagined, the structure of which, in particular of the sidewalls, is greatly reinforced to enable them to roll at low pressure or at zero pressure.
- An example of such “self-supporting” tires is given in US patent 6,026,878 to Goodyear.
- these flat run mode devices are so effective that the driver does not easily notice the drop in pressure in one of the tires in his vehicle.
- These systems must therefore include tire pressure measuring devices whose essential function is to warn the driver as soon as the pressure in a tire drops below a predetermined threshold.
- run-flat systems based on the use of means for supporting the tread of the pneumatic casing in the event of deflation of the casing arranged in or outside the pneumatic casing currently allow, according to the manufacturers tires, running under flat speed conditions at a limited speed (of the order of 80 km / h maximum) and for a distance which is also limited (of the order of 200 km).
- the object of the invention is precisely to indicate to the driver at all times an estimate of the real autonomy which he has after a strong loss of pressure, according to the real driving conditions.
- the present invention therefore makes it possible to indicate at all times to the driver his real autonomy; if necessary, it warns the driver that he has crossed a maximum distance and that he should stop; Finally, it specifies the conditions for the reuse of its run-flat system. To obtain this result, the invention calls upon the processing of data coming from different sensors and representing significant parameters of the running flat system concerned and of the vehicle.
- the method according to the invention for evaluating the autonomy of a run-flat system fitted to a vehicle comprising at least for each wheel a pneumatic envelope, a deflation warning device and means for supporting the strip of rolling of the pneumatic envelope in the event of deflation of the envelope, is characterized in that, from the moment when the deflation alarm has detected a predetermined deflation threshold:
- J (t) J (t- ⁇ t) - ⁇ J
- J is initialized to 1 when the run-flat system is new.
- the updated value of J (t) is transmitted to the driver of the vehicle.
- the driver of the vehicle is preferably sent a warning recommending that he stop soon.
- the inflation pressure measured is less than a given threshold, it is considered that the tire concerned is in run-flat conditions.
- e is said modeled range, expressed in kilometers (km), which corresponds to the range available before immobilization of a rolling system running at a constant temperature T;
- T is the internal air temperature (in degrees Celsius);
- T 0 is an arbitrary reference temperature (in degrees Celsius), for example the maximum temperature likely to be reached; • e 0 is the estimated autonomy at temperature T 0 ; e 0 is around 200 km;
- ⁇ T in degrees Celsius is a temperature interval corresponding to a reduction of a factor of 2 in autonomy; ⁇ T is around 10 ° C.
- e is the modeled range, expressed in km, which corresponds to the range available before immobilizing a rolling system running at a constant temperature T;
- T is the internal air temperature measured (in degrees Celsius);
- T 0 is an arbitrary reference temperature (in degrees Celsius), for example the maximum temperature likely to be reached;
- characteristic parameters can advantageously be chosen from the following group: the inflation pressure, the location of the tire concerned, the load applied, the outside temperature, the vehicle speed, the type of vehicle, the wiper speed, the longitudinal and transverse forces applied to the wheel concerned. You can also use the location, the internal air temperature and the pressure of other inflated tires.
- the method according to the invention can also be applied, in addition to the evaluation of the damage and of the autonomy of the run-flat system, to the evaluation of the reuse of the tire concerned by run-flat as well as the evaluation of the reuse of the safety insert, if applicable.
- FIG. 1 a schematic diagram of the process presented in FIG. 1 will be described.
- the function F (C) is determined empirically from a series of tests carried out by varying the running conditions. This function is usually limited to a given maximum value, for example 1500 km.
- J (t) J (t- ⁇ t) - ⁇ J It is then possible to transmit to the driver of the vehicle the estimate of the potential for use of the updated system JxlOO, in% for example. It is also possible to transmit an estimate E of the residual autonomy under the current driving conditions given for example by calculating the product:
- the residual pressure of the tire concerned a “flat” tire does not necessarily have zero pressure as is the case during tests under severe conditions; if the pressure loss is slow (around 80% of punctures), at the start of running flat, the tire heats up and even inflates a little temporarily: we can estimate that an additional pressure of 0.2 bar can multiply the minimum autonomy by 10.
- Atmospheric conditions also have an influence: in wet weather, autonomy is very significantly increased by reducing the operating temperature of the system.
- the condition of the ground also plays an important role: thus, on bumpy ground, which creates dynamic overloads, autonomy is reduced significantly.
- the transverse forces are very penalizing for flat running systems because the forces in turns generate localized dynamic overloads.
- the location of the tire concerned on the vehicle, front or rear axle, is important because the actual driving conditions depend on the settings of the suspensions (eg camber angle, etc.) which may differ at the front and rear.
- the maximum range was set at 1500 km and the only parameter retained was the temperature (T) of the internal air of the tire.
- T the temperature of the internal air of the tire.
- the maximum measurable internal temperature was 110 ° C.
- the first line of the table is a simulation of the urban cycle on a so-called “rolling machine”;
- the second line is a mixed road / motorway traffic;
- the third line is another mixed road / motorway traffic
- column 1 gives the average load (for a maximum load of 425 daN);
- column 2 gives the route split in the form of the number of stops over 15 minutes;
- column 3 gives the average driving speed;
- column 4 gives the percentage of wet road;
- column 5 gives the average outside air temperature;
- column 6 gives the average temperature of the internal air during taxiing;
- column 7 gives the actual measured autonomy;
- column 8 gives the autonomy evaluated by the method which is the subject of the invention;
- column 9 gives the "gain" for the driver compared to a minimum range announced by the manufacturer (200 km).
- column 3 the average outside air temperature
- column 4 gives the average measured temperature of the internal air of the tire
- column 5 gives the maximum measured temperature of the internal air of the tire
- - column 6 gives the actual measured autonomy
- - column 7 gives the autonomy evaluated by the method which is the subject of the invention
- the adjustment function chosen is particularly easy to implement. As shown in the previous results, it makes it possible to significantly improve the actual conditions of use of the run-flat system by allowing a longer run time in run-flat when the actual conditions of use allow it.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01962865A EP1305173B1 (fr) | 2000-07-25 | 2001-07-20 | Procede d'evaluation de l'autonomie d'un systeme de roulage a plat |
AU8395201A AU8395201A (en) | 2000-07-25 | 2001-07-20 | Method for assessing the endurance of a running flat system |
DE60129225T DE60129225T2 (de) | 2000-07-25 | 2001-07-20 | Auswertungsverfahren der autonomie eines notlaufreifensystems |
BR0112720-9A BR0112720A (pt) | 2000-07-25 | 2001-07-20 | Processo de avaliação da autonomia de um sistema de rodagem sem pressão que equipa um veìculo, e, aplicação do processo |
AU2001283952A AU2001283952B2 (en) | 2000-07-25 | 2001-07-20 | Method for assessing the endurance of a running flat system |
JP2002513711A JP2004504213A (ja) | 2000-07-25 | 2001-07-20 | ランニングフラットシステムの耐久性評価方法 |
US10/350,259 US6672149B2 (en) | 2000-07-25 | 2003-01-23 | Method for assessing the range of a run-flat system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0009734A FR2812394A1 (fr) | 2000-07-25 | 2000-07-25 | Procede d'evaluation de l'autonomie d'un systeme de roulage a plat |
FR00/09734 | 2000-07-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/350,259 Continuation US6672149B2 (en) | 2000-07-25 | 2003-01-23 | Method for assessing the range of a run-flat system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002007996A1 true WO2002007996A1 (fr) | 2002-01-31 |
Family
ID=8852890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/008429 WO2002007996A1 (fr) | 2000-07-25 | 2001-07-20 | Procede d'evaluation de l'autonomie d'un systeme de roulage a plat |
Country Status (11)
Country | Link |
---|---|
US (1) | US6672149B2 (fr) |
EP (1) | EP1305173B1 (fr) |
JP (1) | JP2004504213A (fr) |
CN (1) | CN100333931C (fr) |
AT (1) | ATE366189T1 (fr) |
AU (2) | AU8395201A (fr) |
BR (1) | BR0112720A (fr) |
DE (1) | DE60129225T2 (fr) |
FR (1) | FR2812394A1 (fr) |
RU (1) | RU2265528C2 (fr) |
WO (1) | WO2002007996A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003086786A1 (fr) * | 2002-04-18 | 2003-10-23 | Societe De Technologie Michelin | Indicateur d'etat d'un systeme |
US6720869B2 (en) * | 2001-01-10 | 2004-04-13 | Denso Corporation | Tire pneumatic pressure detector |
WO2004091943A1 (fr) * | 2003-04-15 | 2004-10-28 | The Yokohama Rubber Co., Ltd. | Dispositif d'alarme pour pneumatique |
US6946048B2 (en) | 2000-03-31 | 2005-09-20 | Bridgestone/Firestone North American Tire, Llc | Attachment patch for mounting an electronic monitoring device to the inside of a pneumatic tire |
US7079018B2 (en) | 2002-04-18 | 2006-07-18 | Michelin Recherche Et Technique S.A. | System state indicator |
CN100398348C (zh) * | 2002-08-12 | 2008-07-02 | 株式会社普利司通 | 判断漏气保用轮胎的剩余寿命和寿命终点的方法和设备 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4382562B2 (ja) * | 2004-04-12 | 2009-12-16 | 株式会社ブリヂストン | ランフラットタイヤのランフラット走行寿命末期を判定する方法及び装置 |
US7197922B2 (en) * | 2005-05-17 | 2007-04-03 | Gm Global Technology Operations, Inc. | Tire rotation detection using tire temperature profiling |
US8718868B2 (en) * | 2011-06-30 | 2014-05-06 | GM Global Technology Operations LLC | Vehicle using tire temperature to adjust active chassis systems |
JP5347054B1 (ja) * | 2012-09-03 | 2013-11-20 | 株式会社ブリヂストン | タイヤケースライフ予測システム |
US9079461B2 (en) | 2013-03-14 | 2015-07-14 | The Goodyear Tire & Rubber Company | Predictive peer-based tire health monitoring |
US9376118B2 (en) | 2014-07-08 | 2016-06-28 | The Goodyear Tire & Rubber Company | Assessment of tire condition based on a tire health parameter |
US9636956B2 (en) | 2014-11-04 | 2017-05-02 | The Goodyear Tire & Rubber Company | Wheel diagnostic monitoring |
IT201800005906A1 (it) * | 2018-05-31 | 2019-12-01 | Sistema e metodo di rilevamento di danni a pneumatici | |
IT201800005904A1 (it) * | 2018-05-31 | 2019-12-01 | Sistema e metodo di rilevamento di danni a pneumatici | |
FR3089867B1 (fr) * | 2018-12-13 | 2020-11-20 | Continental Automotive France | Procédé de détection d’un risque d’éclatement d’un pneu |
GB2584326A (en) * | 2019-05-31 | 2020-12-02 | Continental Automotive Gmbh | A vehicle safety system and a method of controlling the same |
CN110758026B (zh) * | 2019-09-16 | 2021-12-17 | 北京汽车集团有限公司 | 泄压故障检测方法、装置、系统和车辆 |
US11865875B2 (en) | 2020-08-18 | 2024-01-09 | The Goodyear Tire & Rubber Company | Tire high temperature forecasting system |
Citations (2)
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US4186377A (en) * | 1976-03-11 | 1980-01-29 | Safety Research & Engineering Corporation | Method and apparatus for monitoring tire pressure |
US6087930A (en) * | 1994-02-22 | 2000-07-11 | Computer Methods Corporation | Active integrated circuit transponder and sensor apparatus for transmitting vehicle tire parameter data |
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US3872907A (en) * | 1973-10-01 | 1975-03-25 | Goodyear Tire & Rubber | Safety support device for pneumatic tires |
US4186277A (en) * | 1976-01-23 | 1980-01-29 | Siemens Aktiengesellschaft | Time division multiplex telecommunications switching network |
US4274466A (en) * | 1976-06-04 | 1981-06-23 | Dunlop Limited | Tire and wheel rim assemblies |
US4148348A (en) * | 1976-06-04 | 1979-04-10 | Dunlop Limited | Tire and wheel rim assemblies |
US4153095A (en) * | 1977-09-14 | 1979-05-08 | Uniroyal, Inc. | Pneumatic tire having a pneumatic safety insert with beads |
IN155019B (fr) * | 1979-12-06 | 1984-12-22 | Dunlop Ltd | |
EP0077161A3 (fr) * | 1981-10-09 | 1984-03-21 | Dunlop Limited | Bandage pneumatique |
US4578735A (en) * | 1984-10-12 | 1986-03-25 | Knecht Thomas A | Pressure sensing cell using brittle diaphragm |
FR2622845B1 (fr) * | 1987-11-09 | 1990-02-09 | Michelin & Cie | Procede d'exploitation des mesures de pression et de temperature dans un dispositif de surveillance des pneumatiques |
FR2699121B1 (fr) * | 1992-12-11 | 1995-03-17 | Michelin & Cie | Ensemble formé d'un pneumatique, d'une jante et d'un anneau de soutien. |
US5879482A (en) * | 1996-03-15 | 1999-03-09 | Goodyear Tire & Rubber Company | Run-flat low-pressure all terrain vehicle (ATV) tire |
FR2746347A1 (fr) * | 1996-03-19 | 1997-09-26 | Michelin & Cie | Appui de securite en materiau elastomerique souple pour pneumatique |
US6026878A (en) * | 1997-05-29 | 2000-02-22 | The Goodyear Tire & Rubber Company | Inextensible high temperature resistant tire |
US5868190A (en) * | 1997-06-10 | 1999-02-09 | Michelin Recherche Et Technique, S.A. | Run-flat tire with an improved bead to rim interface |
JP3335112B2 (ja) * | 1997-10-20 | 2002-10-15 | 住友ゴム工業株式会社 | ランフラットタイヤ |
-
2000
- 2000-07-25 FR FR0009734A patent/FR2812394A1/fr active Pending
-
2001
- 2001-07-20 AT AT01962865T patent/ATE366189T1/de not_active IP Right Cessation
- 2001-07-20 BR BR0112720-9A patent/BR0112720A/pt not_active IP Right Cessation
- 2001-07-20 EP EP01962865A patent/EP1305173B1/fr not_active Expired - Lifetime
- 2001-07-20 DE DE60129225T patent/DE60129225T2/de not_active Expired - Lifetime
- 2001-07-20 WO PCT/EP2001/008429 patent/WO2002007996A1/fr active IP Right Grant
- 2001-07-20 JP JP2002513711A patent/JP2004504213A/ja not_active Abandoned
- 2001-07-20 CN CNB018133819A patent/CN100333931C/zh not_active Expired - Fee Related
- 2001-07-20 AU AU8395201A patent/AU8395201A/xx active Pending
- 2001-07-20 RU RU2003105227/11A patent/RU2265528C2/ru not_active IP Right Cessation
- 2001-07-20 AU AU2001283952A patent/AU2001283952B2/en not_active Ceased
-
2003
- 2003-01-23 US US10/350,259 patent/US6672149B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US4186377A (en) * | 1976-03-11 | 1980-01-29 | Safety Research & Engineering Corporation | Method and apparatus for monitoring tire pressure |
US6087930A (en) * | 1994-02-22 | 2000-07-11 | Computer Methods Corporation | Active integrated circuit transponder and sensor apparatus for transmitting vehicle tire parameter data |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6946048B2 (en) | 2000-03-31 | 2005-09-20 | Bridgestone/Firestone North American Tire, Llc | Attachment patch for mounting an electronic monitoring device to the inside of a pneumatic tire |
US6720869B2 (en) * | 2001-01-10 | 2004-04-13 | Denso Corporation | Tire pneumatic pressure detector |
WO2003086786A1 (fr) * | 2002-04-18 | 2003-10-23 | Societe De Technologie Michelin | Indicateur d'etat d'un systeme |
US7079018B2 (en) | 2002-04-18 | 2006-07-18 | Michelin Recherche Et Technique S.A. | System state indicator |
CN100398348C (zh) * | 2002-08-12 | 2008-07-02 | 株式会社普利司通 | 判断漏气保用轮胎的剩余寿命和寿命终点的方法和设备 |
US7563021B2 (en) | 2002-08-12 | 2009-07-21 | Bridgestone Corporation | Method device and recording medium where program is recorded, for deciding residual travel life and end of life of run-flat tire that continues traveling in run-flat condition |
WO2004091943A1 (fr) * | 2003-04-15 | 2004-10-28 | The Yokohama Rubber Co., Ltd. | Dispositif d'alarme pour pneumatique |
EP1619052A1 (fr) * | 2003-04-15 | 2006-01-25 | The Yokohama Rubber Co., Ltd. | Dispositif d'alarme pour pneumatique |
US7391307B2 (en) | 2003-04-15 | 2008-06-24 | The Yokohama Rubber Co., Ltd. | Tire alarm device |
KR101095290B1 (ko) | 2003-04-15 | 2011-12-16 | 요코하마 고무 가부시키가이샤 | 타이어 경보 장치 |
EP1619052A4 (fr) * | 2003-04-15 | 2011-12-21 | Yokohama Rubber Co Ltd | Dispositif d'alarme pour pneumatique |
Also Published As
Publication number | Publication date |
---|---|
FR2812394A1 (fr) | 2002-02-01 |
AU8395201A (en) | 2002-02-05 |
BR0112720A (pt) | 2003-06-24 |
EP1305173B1 (fr) | 2007-07-04 |
DE60129225D1 (de) | 2007-08-16 |
JP2004504213A (ja) | 2004-02-12 |
US6672149B2 (en) | 2004-01-06 |
CN100333931C (zh) | 2007-08-29 |
ATE366189T1 (de) | 2007-07-15 |
DE60129225T2 (de) | 2008-03-13 |
EP1305173A1 (fr) | 2003-05-02 |
CN1444529A (zh) | 2003-09-24 |
RU2265528C2 (ru) | 2005-12-10 |
US20030140687A1 (en) | 2003-07-31 |
AU2001283952B2 (en) | 2005-01-27 |
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