EP2304430A2 - Procede de prevention du fonctionnement d'un moteur de vehicule - Google Patents
Procede de prevention du fonctionnement d'un moteur de vehiculeInfo
- Publication number
- EP2304430A2 EP2304430A2 EP09784436A EP09784436A EP2304430A2 EP 2304430 A2 EP2304430 A2 EP 2304430A2 EP 09784436 A EP09784436 A EP 09784436A EP 09784436 A EP09784436 A EP 09784436A EP 2304430 A2 EP2304430 A2 EP 2304430A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- lubricant
- engine
- bht
- vehicle
- 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- Withdrawn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 42
- 239000000446 fuel Substances 0.000 claims abstract description 56
- 238000004497 NIR spectroscopy Methods 0.000 claims abstract description 7
- 239000000314 lubricant Substances 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 12
- 238000004566 IR spectroscopy Methods 0.000 claims description 7
- 239000002551 biofuel Substances 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 2
- 230000003595 spectral effect Effects 0.000 claims description 2
- 230000007257 malfunction Effects 0.000 abstract description 9
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 23
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 22
- 239000003225 biodiesel Substances 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000011002 quantification Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- FAVZTHXOOBZCOB-UHFFFAOYSA-N 2,6-Bis(1,1-dimethylethyl)-4-methyl phenol Natural products CC(C)CC1=CC(C)=CC(CC(C)C)=C1O FAVZTHXOOBZCOB-UHFFFAOYSA-N 0.000 description 1
- BKZXZGWHTRCFPX-UHFFFAOYSA-N 2-tert-butyl-6-methylphenol Chemical compound CC1=CC=CC(C(C)(C)C)=C1O BKZXZGWHTRCFPX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Specific substances contained in the oils or fuels
Definitions
- the present invention relates to a method for preventing the operation of a vehicle engine.
- biodiesel is essentially in the form of methyl esters or ethyl esters of vegetable oils.
- the objective of some European countries is to incorporate 7% by volume of biodiesel as of January 2008 and 10% by volume in 2010.
- Biodiesel has the particularity of having a poor oxidation stability having an impact on the quality of the fuel.
- the use of unstable fuel can cause several types of malfunctions in the engine fuel system, including the formation of deposits in the tank or premature clogging of the diesel fuel filter.
- the presence of poor quality biodiesel in the engine lubricant can also change the properties of the lubricant.
- the resistance of the lubricant to oxidation can be impaired. Sediments resulting from the thermal degradation of biodiesel contained in the lubricant can also be formed.
- BHT 2,6-di-tert-butyl-4-methylphenol or 2,6-bis (1,1-dimethylethyl) -4-methylphenol or t-butylhydroxytoluene
- EP-B-0 863 490 discloses a method for calculating and displaying maintenance intervals in the case of components and / or resources of devices subject to wear and / or aging processes which include the detection of parameters that influence wear and / or aging.
- the method further comprises dividing the detected operating parameters into those having a constant relationship with the wear and / or aging of the components and / or resources and those having a discrete relationship.
- the method also includes determining a basic quantity by using at least one operating parameter having a constant relationship and quantizing at least one operating parameter into zones of different effects on wear and / or aging. and assigning an evaluation factor to the currently detected and / or derived operation parameter.
- the method also includes the optional determination of an average evaluation factor over a predefined time interval and the grouping of the determined operating parameters in an evaluation device, the quantized operating parameters being factorially taken into account with the unquantized operating parameters.
- the method further includes integrating the aggregated operating parameter magnitudes into adjustable time intervals, optionally scaling the integrated overall quantity with a nonlinear evaluation function, and comparing the weighted overall quantity, integrated with the choice. with a predefined threshold value.
- Document FR-A-2 505 279 discloses a method for defining maintenance and overhaul intervals for motor vehicles, according to which the driver of a motor vehicle receives an execution instruction from a motor vehicle.
- maintenance or overhaul when a value, obtained during operation of the motor vehicle, of a reference element considered as determining for the maintenance interval, reaches a predetermined quantity defining the moment of the operation of maintenance or overhaul.
- a value determined continuously, and which is characteristic of the state of the reference element, is applied to a computing unit having a memory, wherein the characteristic value of the reference element determining the revision time is stored.
- the calculating unit indicates, via an indicating device and when the value obtained corresponds to the stored value of the reference element, that a revision operation is to be performed.
- the calculation unit receives other characteristic values of the state of wear-sensitive reference elements which are compared with values, also stored in the computer memory and corresponding to the wear limits of the functional elements, the calculator then affecting the functional elements, according to their wear condition, a revision date which is determined by the reference element.
- the document FR-A-2 883 602 describes a method of optimizing the operation of a heat engine whose combustion parameters are controlled by an electronic box and at least one engine mapping.
- the method comprises a step of analyzing the composition of the fuel from at least one sensor implanted in the engine fuel system comprising the filling system, the tank, the pumps, the fuel filters, and the fuel circuits. supplying the motor and a return circuit to the tank, and a step of selecting or modifying said mapping according to the result of said analysis.
- the invention provides a method for preventing the operation of a vehicle engine, the method comprising determining the level of BHT in the engine fuel supply by near infrared spectroscopy.
- the method further comprises determining the level of biofuel in the fuel, preferably determined by near-infrared spectroscopy.
- the infrared spectroscopy of the BHT is performed by a near infrared sensor, preferably a sensor making measurements in the spectral range of 6970 cm “1 and 7250 cm" 1, preferably between 7050 cm “ 1 and 7220 cm -1 .
- the sensor is preferably placed in the engine fuel system.
- the method further comprises determining the state of the lubricant from the BHT content in the fuel.
- the method further comprises the warning of the user relative to at least one of the detections selected from the group comprising the detection of non-compliance of the fuel and the detection of a drain of the lubricant. to achieve.
- the warning is a signal from the dashboard.
- the invention also relates to a vehicle comprising a fuel tank, a near-infrared sensor measuring the rate of BHT in the fuel, a motor fueled from the fuel tank, and a calculator implementing the method. as defined above.
- the vehicle comprises a lubricant chamber, the calculator further determining the state of the lubricant from the BHT content in the fuel.
- a method of preventing the operation of a vehicle engine comprising determining the BHT level in the engine fuel supply by infrared spectroscopy.
- the level of BHT in the fuel makes it possible to determine the oxidation stability of the fuel and thus the quality of the fuel. Knowing the quality of fuel, it is possible to avoid malfunctions of the engine. The prevention process therefore increases the durability of the engine which increases customer satisfaction.
- the prevention method can be implemented in a vehicle that includes a fuel tank.
- the vehicle further includes a motor fueled from the fuel tank.
- the vehicle further comprises a computer that controls the various parameters of the vehicle components.
- the calculator makes it possible to implement the prevention method.
- the method comprises determining the level of BHT in the engine feed fuel by infrared spectroscopy.
- near-infrared spectroscopy also referred to as the English acronyms PIR or NIR
- PIR near-infrared spectroscopy
- the determination of the BHT content in the fuel makes it possible to know information on the quality of the biodiesel contained in the tank of the vehicle. Based on information on the quality of biodiesel, the number of engine failures can be reduced. The durability of the engine is thus improved.
- the infrared spectroscopy of BHT can be performed by an infrared sensor forming part of the vehicle.
- the sensor can be placed in the engine fuel system.
- the sensor thus makes it possible to achieve the near-infrared spectrum of the fuel flowing in the motor supply circuit in reflectance, transmittance or absorbance.
- the sensor may for example be photodiodes each recording the light intensity at a given wavelength.
- the sensor can advantageously be cooled to improve the signal-to-noise ratio of the detection of the infrared spectrum.
- An infrared sensor has the advantage of being a relatively easy component to implement to perform near-infrared spectroscopy in a vehicle.
- the size and mass of an infrared sensor are indeed generally low.
- BHT has a strongly concentration-dependent absorption in this particular area of the spectrum. The dependence is even more sensitive in the range of 7050 cm-1 to 7220 cm-1. It is therefore It is advantageous to carry out the quantification of BHT in the spectrum between 7050 cm -1 and 7220 cm -1. Such quantification is nevertheless possible on other parts of the absorption spectrum.
- the method may further comprise determining the level of biofuel in the fuel. This makes it possible to have more precise information on the quality of the fuel used. A better knowledge of the quality of the fuel makes it possible to better prevent malfunctions of the engine.
- Determining the level of biofuel can in particular be carried out by infrared spectroscopy.
- Infrared spectroscopy is indeed easy to implement in a vehicle.
- An infrared sensor as described above can for example be used.
- the prevention method can be used for the detection of a non-compliant fuel. It is useful to detect the non-compliance of a fuel because several malfunctions can be caused in the fuel system when a non-compliant fuel is used. Deposits in the reservoir may for example be formed. The diesel filter can also be prematurely clogged as the high pressure fuel system.
- the high pressure fuel system includes the high pressure pump, the injectors or the strainer.
- the presence of BHT is regulatory in biofuels and its absence is indicative of a non-compliance of fuel. It is therefore possible from the determined BHT level in the fuel to determine if the fuel is compliant. Such a determination may in particular be made during the filling of the tank to avoid preventing all malfunctions related to the use of a non-compliant fuel.
- the prevention method can also be used to manage and adapt the engine lubricant maintenance step.
- the lubricant used is usually oil.
- FAP particulate matter
- NOx nitrogen oxide trap
- Such systems are characterized by the adsorption of polluting chemical species present in the exhaust (soot for the particulate filter, NOx and SOx for the NOx trap) on a matrix disposed in the exhaust line of the engine.
- it is useful to carry out regenerations in order to desorb the accumulated species in an acceptable form for the atmosphere.
- Regenerations are all characterized by the use of post-injection: a late injection is performed during the relaxation after the main combustion to maintain the hot gases or sufficient wealth.
- post-injection is also required to heat the exhaust gases to a temperature level sufficient to achieve the combustion of carbon soot retained on the particulate filter.
- NOx purge phases it is a question of making a late injection in order to cause an almost total consumption of the oxygen of the exhaust gases making it possible to bring the richness of the exhaust gases passing through the catalyst beyond
- SOx purge phases the postinjection levels make it possible both to raise the exhaust gases to high temperatures, typically higher than 650 ° C, and to a greater than 1 richness.
- the post-injections are actually fuel injections after top dead center. This results in a dilution of the engine lubricant present as a film in the engine cylinder.
- the late injections cause an introduction of diesel into the lubricant film either by direct liquid impact of the injector spray, or by condensation of fuel species vaporized during postinjection at the extinction of the main combustion. Since the lubricant film present on the cylinder is partially scraped back to the lubricant tank at each cycle of the engine, the result is a gradual increase in the dilution ratio of the gas oil in the lubricant during the regeneration phases.
- a high level of dilution of the fuel in the lubricant means for the engine a drop in the viscosity of the lubricant. Such a drop can result in a drop in lubricant pressure with a risk of seizing the lubricated element.
- the lubricant film may thin, thus causing premature wear of the lubrication members.
- the oxidation of the lubricant can also take place which accelerates the aging of the lubricant.
- Corrosion also has an impact on the tightness of the lubricant circuit.
- the concentrations of the additives in the lubricant also decrease due to the dilution. This can result in a decrease in lubricant performance.
- the maintenance step can thus be adapted to the state of the lubricant. This makes it possible to find the right compromise between emptying done too early when the lubricant could still be effective and emptying performed too late when the lack of efficiency of the lubricant could lead to damage to the engine. Maintenance is thus adapted to the fuel used in the engine.
- the method may also include the warning of the user relative to at least one of the detections selected from the group comprising the detection of non-compliance of the fuel and the detection of a drain of the lubricant to be performed. This allows the user to act before the vehicle is damaged. Malfunctions of the vehicle engine are thus prevented which improves customer satisfaction.
- the vehicle may further comprise a dashboard.
- the warning can then be in particular in the form of a signal emitted by the dashboard of the vehicle.
- a signal may in particular be visual or sound.
- Such warning means have the advantage of being relatively simple to implement.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0854677A FR2933739B1 (fr) | 2008-07-09 | 2008-07-09 | Procede de prevention du fonctionnement d'un moteur de vehicule |
PCT/FR2009/051223 WO2010004177A2 (fr) | 2008-07-09 | 2009-06-25 | Procede de prevention du fonctionnement d'un moteur de vehicule |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2304430A2 true EP2304430A2 (fr) | 2011-04-06 |
Family
ID=40325852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09784436A Withdrawn EP2304430A2 (fr) | 2008-07-09 | 2009-06-25 | Procede de prevention du fonctionnement d'un moteur de vehicule |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2304430A2 (fr) |
BR (1) | BRPI0909946A2 (fr) |
FR (1) | FR2933739B1 (fr) |
RU (1) | RU2502070C2 (fr) |
WO (1) | WO2010004177A2 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2007706C1 (ru) * | 1991-12-16 | 1994-02-15 | Рахубовский Юрий Сидорович | Прибор для анализа моторного масла |
EP0871858B1 (fr) * | 1995-04-06 | 2006-09-13 | DeLaval Holding AB | Procede et appareil de determination quantitative de particules dans des fluides |
CA2373327A1 (fr) * | 2001-03-22 | 2002-09-22 | Oryxe Energy International, Inc. | Methode et compose pour ajouter des matieres organiques, des matieres derivees de plantes et des extraits d'huile dans les combustibles fossiles pour reduire les emissions |
FR2883602B1 (fr) * | 2005-03-22 | 2010-04-16 | Alain Lunati | Procede d'optimisation des parametres de fonctionnement d'un moteur a combustion |
RU2301414C1 (ru) * | 2005-11-07 | 2007-06-20 | ФГОУ ВПО Рязанская государственная сельскохозяйственная академия им. проф. П.А. Костычева | Способ оценки загрязненности механическими примесями моторного масла двигателя внутреннего сгорания |
RU2310845C1 (ru) * | 2006-08-25 | 2007-11-20 | Федеральное государственное унитарное предприятие "25 Государственный научно-исследовательский институт Министерства обороны Российской Федерации" (по применению топлив, масел, смазок и специальных жидкостей - ГосНИИ по химмотологии) | Способ определения вида минеральных моторных масел для автомобильной техники |
-
2008
- 2008-07-09 FR FR0854677A patent/FR2933739B1/fr not_active Expired - Fee Related
-
2009
- 2009-06-25 BR BRPI0909946A patent/BRPI0909946A2/pt not_active IP Right Cessation
- 2009-06-25 WO PCT/FR2009/051223 patent/WO2010004177A2/fr active Application Filing
- 2009-06-25 RU RU2011104506/15A patent/RU2502070C2/ru not_active IP Right Cessation
- 2009-06-25 EP EP09784436A patent/EP2304430A2/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2010004177A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010004177A3 (fr) | 2010-03-11 |
FR2933739B1 (fr) | 2010-08-13 |
WO2010004177A2 (fr) | 2010-01-14 |
FR2933739A1 (fr) | 2010-01-15 |
BRPI0909946A2 (pt) | 2015-10-20 |
RU2502070C2 (ru) | 2013-12-20 |
RU2011104506A (ru) | 2012-08-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2067033B1 (fr) | Procédé de mise en sécurité des organes du groupe motopropulseur d'un véhicule à la suite d'une dégradation du carburant | |
CA2685821C (fr) | Procede de reglage des parametres d'injection, de combustion et/ou de post-traitement d'un moteur a combustion interne a auto-allumage | |
EP2520785B1 (fr) | Procedé d'estimation de la dilution du carburant dans l'huile d'un moteur à combustion interne | |
CA2859751C (fr) | Procede pour le diagnostic du dysfonctionnement d'un dispositif d'additivation d'un additif dans un carburant pour un vehicule et systeme pour la mise en oeuvre de ce procede | |
FR2883377A1 (fr) | Procede de saisie quantitative de deux polluants d'un fluide | |
EP2304430A2 (fr) | Procede de prevention du fonctionnement d'un moteur de vehicule | |
FR2970045A1 (fr) | Procede de commande d'un moteur garantissant une dilution de gazole maximum a la revision | |
EP2324214B1 (fr) | Strategie de controle de la qualite du lubrifiant d'un moteur diesel | |
FR2923266A1 (fr) | Estimation des effets de l'evaporation du carburant dilue dans l'huile d'un moteur a combustion interne | |
FR2937373A1 (fr) | Procede d'estimation du vieillissement d'un lubrifiant. | |
FR2877392A1 (fr) | Dispositif de controle de l'etat de fonctionnement d'un convertisseur catalytique d'une ligne d'echappement d'un moteur a combustion interne et moteur comprenant un tel dispositif | |
FR2933735A1 (fr) | Procede et dispositif de commande des regenerations d'un systeme de post-traitement des gaz d'echappement d'un moteur a combustion | |
EP3482052B1 (fr) | Procede d'adaptation d'une estimation d'une vitesse de combustion des suies d'un filtre a particules de moteur thermique | |
EP3902990B1 (fr) | Procédé d'estimation de la dilution globale de l'huile d'un moteur à combustion interne | |
FR3073428B1 (fr) | Procede d’adaptation de l’additivation aux emissions pour aide a la regeneration d’un filtre a particules | |
FR2953559A1 (fr) | Systeme et procede d'estimation de la masse de particules stockees dans un filtre a particules de vehicule automobile | |
FR2918708A1 (fr) | Evaluation du chargement d'un filtre a particules. | |
EP2035825A2 (fr) | Methode pour evaluer le taux de dilution de l huile par mesure de radioactivite | |
WO2021249681A1 (fr) | Dispositif de diagnostic de filtre à particules | |
FR2998000A1 (fr) | Procede d'estimation et de diagnostic du dosage des suies dans un systeme de filtre a particules additive | |
FR2930968A1 (fr) | Procede de regeneration d'un systeme de post traitement par fractionnement de la richesse. | |
FR2968036A1 (fr) | Un procede de controle d'un moteur de vehicule et un vehicule adapte a mettre en œuvre ce procede | |
FR2985316A1 (fr) | Procede pour le diagnostic externe du dysfonctionnement d'un dispositif d'additivation d'un additif dans un carburant pour un vehicule | |
FR2942320A1 (fr) | Procede de determination du pouvoir calorifique inferieur d'un carburant | |
FR2907902A1 (fr) | Procede pour identifier un carburant de vehicule automobile et vehicule automobile associe |
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 |
|
17P | Request for examination filed |
Effective date: 20101213 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
DAX | Request for extension of the european patent (deleted) | ||
RTI1 | Title (correction) |
Free format text: METHOD FOR PREVENTING THE MALFFUNCTION OF A VEHICLE ENGINE |
|
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 |
|
18D | Application deemed to be withdrawn |
Effective date: 20120204 |