EP2520785A3 - Method for estimating the dilution of fuel in the oil of an internal combustion engine - Google Patents

Method for estimating the dilution of fuel in the oil of an internal combustion engine Download PDF

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Publication number
EP2520785A3
EP2520785A3 EP12305325.8A EP12305325A EP2520785A3 EP 2520785 A3 EP2520785 A3 EP 2520785A3 EP 12305325 A EP12305325 A EP 12305325A EP 2520785 A3 EP2520785 A3 EP 2520785A3
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EP
European Patent Office
Prior art keywords
fuel
oil
estimating
internal combustion
combustion engine
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.)
Granted
Application number
EP12305325.8A
Other languages
German (de)
French (fr)
Other versions
EP2520785A2 (en
EP2520785B1 (en
Inventor
Erwan Radenac
Alexis Brochot
Julien Durand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
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Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP2520785A2 publication Critical patent/EP2520785A2/en
Publication of EP2520785A3 publication Critical patent/EP2520785A3/en
Application granted granted Critical
Publication of EP2520785B1 publication Critical patent/EP2520785B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/10—Indicating devices; Other safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M2250/00—Measuring
    • F01M2250/60—Operating parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/11—Oil dilution, i.e. prevention thereof or special controls according thereto

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Procédé d'estimation du taux de dilution de carburant dans l'huile d'un moteur (1) à combustion interne équipé d'un dispositif de traitement (3) des gaz de combustion nécessitant des phases de régénération par post-injection de carburant, selon lequel on estime le taux de dilution (C) en fonction du mode de fonctionnement du moteur, caractérisé en ce que, en dehors des phases de régénération, la variation du taux de dilution (dC) à chaque instant est calculée à partir d'un ensemble de paramètres comprenant au moins :
- une valeur représentative de la température d'évaporation (T) du carburant dilué dans l'huile du moteur, et
- le temps (t) écoulé depuis la fin de la dernière phase de régénération.

Figure imgaf001
Method for estimating the fuel dilution ratio in the oil of an internal combustion engine (1) equipped with a treatment device (3) for the combustion gases requiring regeneration phases by post-injection of fuel, according to which the dilution ratio ( C ) is estimated as a function of the operating mode of the engine, characterized in that, outside the regeneration phases, the variation of the dilution ratio (dC) at each instant is calculated from a set of parameters comprising at least:
a value representative of the evaporation temperature ( T ) of the fuel diluted in the engine oil, and
the time ( t ) elapsed since the end of the last regeneration phase.
Figure imgaf001
EP12305325.8A 2011-05-06 2012-03-20 Method for estimating the dilution of fuel in the oil of an internal combustion engine Active EP2520785B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1153898A FR2974853B1 (en) 2011-05-06 2011-05-06 METHOD OF ESTIMATING DILUTION OF FUEL IN THE OIL OF AN INTERNAL COMBUSTION ENGINE

Publications (3)

Publication Number Publication Date
EP2520785A2 EP2520785A2 (en) 2012-11-07
EP2520785A3 true EP2520785A3 (en) 2017-02-15
EP2520785B1 EP2520785B1 (en) 2018-07-25

Family

ID=45874750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12305325.8A Active EP2520785B1 (en) 2011-05-06 2012-03-20 Method for estimating the dilution of fuel in the oil of an internal combustion engine

Country Status (2)

Country Link
EP (1) EP2520785B1 (en)
FR (1) FR2974853B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3009338A1 (en) * 2013-07-31 2015-02-06 Peugeot Citroen Automobiles Sa METHOD FOR MANAGING A MOTOR VEHICLE COMPRISING THE ESTIMATION OF A MASS OF WATER INTRODUCED INTO THE OIL PAN
FR3040738B1 (en) * 2015-09-07 2019-06-21 Psa Automobiles Sa. METHOD FOR CONTROLLING A DILUTION OF A FUEL IN A LUBRICATING OIL OF A THERMAL MOTOR OF A MOTOR VEHICLE
FR3077096B1 (en) 2018-01-25 2019-12-13 Renault S.A.S METHOD FOR ESTIMATING THE DILUTION OF FUEL IN THE OIL OF AN INTERNAL COMBUSTION ENGINE
FR3091312B1 (en) 2018-12-27 2020-12-04 Renault Sas Method for estimating the overall dilution of the oil of an internal combustion engine
CN111396171B (en) * 2020-03-30 2021-03-02 无锡伟博汽车科技有限公司 Calculation method for engine oil dilution
US11454144B1 (en) * 2021-03-24 2022-09-27 Caterpillar Inc. Lubricant dilution detection system
CN114707766A (en) * 2022-05-19 2022-07-05 江铃汽车股份有限公司 Engine oil change period prediction method based on regeneration frequency
CN115370446B (en) * 2022-08-24 2023-09-01 东风商用车有限公司 Method, device, equipment and storage medium for judging vehicle engine oil replacement period

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040099252A1 (en) * 2002-10-17 2004-05-27 Nissan Motor Co., Ltd. Estimation of oil-diluting fuel quantity of engine
JP2004346881A (en) * 2003-05-26 2004-12-09 Nissan Motor Co Ltd Control device for internal combustion engine
FR2866957A1 (en) * 2004-02-27 2005-09-02 Peugeot Citroen Automobiles Sa Lubricating oil dilution rate determining system for heat engine of motor vehicle, has two modules to estimate hourly dilution and evaporation of oil, where overall dilution is deduced from accumulated dilution and evaporation values
EP1614870A1 (en) * 2004-07-06 2006-01-11 Ford Global Technologies, LLC A method and a counter for predicting a fuel dilution level of an oil in an internal combustion engine
FR2890411A1 (en) * 2005-09-05 2007-03-09 Peugeot Citroen Automobiles Sa SYSTEM FOR DETERMINING THE DILUTION RATE OF THE LUBRICATING OIL OF A MOTOR VEHICLE HEAT ENGINE BY FUEL FUEL THEREOF
EP1798387A2 (en) * 2005-12-14 2007-06-20 Nissan Motor Co., Ltd. Diluted oil regeneration in internal combustion engine
DE102008002125A1 (en) * 2007-05-31 2008-12-04 Denso Corp., Kariya-shi Exhaust gas purification device for an internal combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860830B1 (en) 2003-10-13 2006-01-13 Renault Sa CONTROL METHOD FOR REGENERATING A PARTICLE FILTER

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040099252A1 (en) * 2002-10-17 2004-05-27 Nissan Motor Co., Ltd. Estimation of oil-diluting fuel quantity of engine
JP2004346881A (en) * 2003-05-26 2004-12-09 Nissan Motor Co Ltd Control device for internal combustion engine
FR2866957A1 (en) * 2004-02-27 2005-09-02 Peugeot Citroen Automobiles Sa Lubricating oil dilution rate determining system for heat engine of motor vehicle, has two modules to estimate hourly dilution and evaporation of oil, where overall dilution is deduced from accumulated dilution and evaporation values
EP1614870A1 (en) * 2004-07-06 2006-01-11 Ford Global Technologies, LLC A method and a counter for predicting a fuel dilution level of an oil in an internal combustion engine
FR2890411A1 (en) * 2005-09-05 2007-03-09 Peugeot Citroen Automobiles Sa SYSTEM FOR DETERMINING THE DILUTION RATE OF THE LUBRICATING OIL OF A MOTOR VEHICLE HEAT ENGINE BY FUEL FUEL THEREOF
EP1798387A2 (en) * 2005-12-14 2007-06-20 Nissan Motor Co., Ltd. Diluted oil regeneration in internal combustion engine
DE102008002125A1 (en) * 2007-05-31 2008-12-04 Denso Corp., Kariya-shi Exhaust gas purification device for an internal combustion engine

Also Published As

Publication number Publication date
EP2520785A2 (en) 2012-11-07
EP2520785B1 (en) 2018-07-25
FR2974853B1 (en) 2015-05-01
FR2974853A1 (en) 2012-11-09

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