EP2324214A1 - Strategie zur überwachung der qualität von dieselmotorschmierstoff - Google Patents

Strategie zur überwachung der qualität von dieselmotorschmierstoff

Info

Publication number
EP2324214A1
EP2324214A1 EP09740369A EP09740369A EP2324214A1 EP 2324214 A1 EP2324214 A1 EP 2324214A1 EP 09740369 A EP09740369 A EP 09740369A EP 09740369 A EP09740369 A EP 09740369A EP 2324214 A1 EP2324214 A1 EP 2324214A1
Authority
EP
European Patent Office
Prior art keywords
criticality
oil
distance
strategy according
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
EP09740369A
Other languages
English (en)
French (fr)
Other versions
EP2324214B1 (de
Inventor
Gérald Crepeau
Gérard ABELLANEDA
Victor Da Silva
Renaud Dufour
Pascal Folliot
Frédéric MONNIER
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2324214A1 publication Critical patent/EP2324214A1/de
Application granted granted Critical
Publication of EP2324214B1 publication Critical patent/EP2324214B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Definitions

  • the invention relates to a quality control strategy of the lubricant of a vehicle diesel engine automobi.
  • regenerations are all characterized by the use of post injection: a late injection is performed during the relaxation after the main combustion in order to maintain the hot gases or a sufficient richness of the air / fuel mixture.
  • post-injection is also required to heat the gases. exhaust at a sufficient temperature level to achieve combustion carbon soot retained on the filter.
  • the NOx purge phases require a late injection to cause a virtually total consumption of oxygen from the exhaust gas, to carry the wealth of the exhaust gas flowing through. the catalyst beyond 1.
  • the post-injection levels must both make it possible to mount the exhaust gases at high temperature (greater than 650 ° C.) and with a richness greater than 1.
  • a high level of dilution of fuel means for the engine a drop in the viscosity of the oil causing a drop in oil pressure with a risk of underfeed and thus galling of a lubricated element and a thinning lubricant films that can cause premature wear of lubrication members.
  • the resulting dilution of the additive concentrations contained in the lubricating oil carries a risk of reducing its performance.
  • the carbon content in the oil may be above the acceptable threshold of 5% maximum, aggravated content, inter alia, by the use of exhaust gas recirculation (EGR) devices.
  • EGR exhaust gas recirculation
  • the combustion process induces, in fact, the formation of nanoparticles mainly made of carbon. These nanoparticles, whose thickness is less than one micron, are hard and abrasive. They lead to an increase in the wear of mechanical engine parts (connecting rod, distribution ..). After destroying the dispersive properties of the oil, they tend to agglomerate to form soot filled at the interstices of organic compounds, which then causes agglomerates considered soft.
  • agglomerates can increase in size to form deposits in the bottom of the oil pan or in the engine filters.
  • the high soot levels will, among other things, alter the properties of some lubricant additives and thus change the chemical and physical properties of the oil resulting in higher operating temperatures and accelerated engine wear. .
  • the life of the engine depends mainly on the proper adjustment of the interval between each maintenance of the engine oil that is applied.
  • the object of the invention is therefore to propose a strategy for applying preventive maintenance of the lubricant of a motor vehicle engine adapted to the type of rolling of said vehicle.
  • a strategy for monitoring the quality of the lubricating oil of an engine comprising the following steps:
  • the criticality zones are determined according to the engine torque and its governor or in another variant, depending on the speed of the vehicle.
  • the criticality levels are stored whenever the predetermined distance has been traveled by the vehicle.
  • the strategy includes an additional step in which the vehicle run mode is taken into account between the last two oil changes, relative to the distance traveled since the last oil change, to define a long-term criticality level.
  • the warning is transmitted by lighting a warning light or by displaying the distance remaining to be traveled before the next emptying. • The distance to be flown until the next oil change is adjusted, during a maintenance operation, according to the information recorded on the criticality levels.
  • the invention is particularly applicable to a motor vehicle whose exhaust line of its engine comprising, at least, a particulate filter and / or a nitrogen treatment device regenerated by post-injection characterized in that it comprises storage and calculation means for implementing the strategy defined above.
  • the second risk the presence in the oil of wear elements, is found on the engine of the vehicles whose rolling is carried out mainly at high loads.
  • This type of haulage which is particu- larly present for vehicles utilities, will generate a rapid increase in the rate of carbonaceous material in the engine oil, and thus increase the share of wear elements in the oil and therefore its degradation by aging.
  • FIG. 1 shows, by way of example, a representative graph of the torque C of an engine as a function of its region N.
  • a Zd zone corresponding to a critical rolling with respect to the dilution has been delineated and a zone Zp corresponding to the critical rolling with respect to the wear elements.
  • the necessary information to define the criticality of a taxi are the distance traveled by the vehicle, the speed and the load of the engine. This information is directly available at the motor control level.
  • zone Zd critical dilation point and Zp critical zone from the point of view of the carbonaceous particles, as we saw above.
  • a distance X traveled by the reference vehicle, for example 1000 km, is also defined.
  • the percentage of the distance X carried out with an engine operation located in the zone Zd is then calculated, which determines a first level Cd of criticality for the risks of dilution, and the percentage of the distance X carried out in the zone Zp. which determines a second level Cp of criticality concerning the risks related to the particles.
  • the motor will go to 1 (ie critical).
  • the first value appears only after the distance X has been traveled for the first time and the following measurements are adjusted in sliding value.
  • the two recorded values are stored in memory.
  • a last oil quality control parameter is also associated with these first two control parameters. It allows to define a Ct level of longer-term criticality taking into account the mode of driving of the vehicle between the last two oil changes, compared to the distance D traveled since the last oil change:
  • the Cd1, Cd2, ... Cdn, Cp1, ... Cpn are either 1 or 0 (see example above) and then sum the sum is divided by the distance traveled divided by the reference distance .
  • the rounded function (number; 0) makes it possible to perform a real rounding and not a rounding down or rounding up, the value thus obtained will be 0 or 1.
  • the criticality levels correspond to the percentage of the distance traveled by the vehicle with a rule located in one of the critical zones Zd or Zp, in the measurement step of the distance X considered.
  • an alert threshold is predetermined, for example when the vehicle performs more than 65% of its driving in one of the two zones. The alert is triggered when the threshold is reached for at least one of the monitored levels.
  • This alert can be transmitted to the user in different ways, for example, by lighting a light or display of the remaining distance to go before the next emptying.
  • the vehicle When the vehicle incorporates the display on the dashboard of the distance to be traveled until the next oil change, it may be pre-adjusted during a maintenance operation to take account of relevant information recorded.
  • criticality levels including the long-term Ct level.
  • the invention that has just been described makes it possible to ensure the preservation of the properties of the lubricating oils of a diesel engine by adjusting the intervals between two oil changes to the conditions of use of the vehicle. This limits the organ failures whose durability depends to a large extent on the quality of these oils.
EP09740369.5A 2008-08-29 2009-07-23 Strategie zur überwachung der qualität von dieselmotorschmierstoff Active EP2324214B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0855790A FR2935431B1 (fr) 2008-08-29 2008-08-29 Stategie de controle de la qualite du lubrifiant d'un moteur diesel.
PCT/FR2009/051481 WO2010023388A1 (fr) 2008-08-29 2009-07-23 Strategie de controle de la qualite du lubrifiant d'un moteur diesel

Publications (2)

Publication Number Publication Date
EP2324214A1 true EP2324214A1 (de) 2011-05-25
EP2324214B1 EP2324214B1 (de) 2019-04-10

Family

ID=40535597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09740369.5A Active EP2324214B1 (de) 2008-08-29 2009-07-23 Strategie zur überwachung der qualität von dieselmotorschmierstoff

Country Status (4)

Country Link
EP (1) EP2324214B1 (de)
FR (1) FR2935431B1 (de)
RU (1) RU2509899C2 (de)
WO (1) WO2010023388A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989726B1 (fr) 2012-04-20 2014-05-02 Peugeot Citroen Automobiles Sa Procede de controle d'une qualite d'un lubrifiant d'un moteur a combustion interne
FR3011577B1 (fr) * 2013-10-03 2015-12-04 Peugeot Citroen Automobiles Sa Procede d'alerte au conducteur en cas de detection de dilution elevee d'un lubrifiant pour moteur de type flex fuel et calculateur moteur correspondant
CN107524493B (zh) * 2017-09-07 2019-10-29 台州滨海吉利发动机有限公司 一种控制机油乳化及燃油稀释的方法及装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU781489A2 (ru) * 1979-03-05 1980-11-23 Предприятие П/Я В-2504 Устройство дл регистрации металлических включений в масл ной системе силовых установок
JPS6044490B2 (ja) * 1981-07-29 1985-10-03 日産自動車株式会社 エンジンオイル交換指示装置
JPS5885314A (ja) * 1981-11-17 1983-05-21 Nissan Motor Co Ltd エンジンオイルの劣化検知装置
JPH04237810A (ja) * 1991-01-22 1992-08-26 Nissan Motor Co Ltd エンジンオイル交換時期検知装置
US5530647A (en) * 1994-07-25 1996-06-25 Thermo King Corporation Method of dynamically determining oil change intervals for internal combustion engines
DE19548260A1 (de) * 1995-12-22 1997-07-03 Audi Ag Verfahren zur Bestimmung des Ölwechselintervalls einer Brennkraftmaschine sowie Vorrichtung zur Durchführung des Verfahrens
RU2145068C1 (ru) * 1996-09-02 2000-01-27 Локомотивное депо Основа Южной железной дороги Устройство для оценки технического состояния двигателя внутреннего сгорания
DE19654450A1 (de) * 1996-12-27 1998-07-02 Daimler Benz Ag Verfahren zur Ermittlung von Motorölwartungszeitpunkten für einen Kraftfahrzeugmotor
DE19705946A1 (de) * 1997-02-17 1998-08-20 Audi Ag Verfahren und Vorrichtung zur Bestimmung des verbleibenden Teils eines Ölwechselintervalls einer Brennkraftmaschine
JP3843381B2 (ja) * 1997-09-05 2006-11-08 株式会社小松製作所 エンジン潤滑油の交換時期の予測装置及び予測方法
RU2291308C1 (ru) * 2005-04-28 2007-01-10 Государственное Научное Учреждение "Институт Механики Металлополимерных Систем Им. В.А. Белого Нан Беларуси" Устройство для измерения концентрации частиц сажи в дизельном моторном масле
EP1728983B1 (de) * 2005-05-30 2011-09-14 C.R.F. Società Consortile per Azioni Verfahren zum Abschätzung der Ölrestlebensdauer einer Brennkraftmaschine

Non-Patent Citations (1)

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Title
See references of WO2010023388A1 *

Also Published As

Publication number Publication date
FR2935431A1 (fr) 2010-03-05
RU2509899C2 (ru) 2014-03-20
RU2011111718A (ru) 2012-10-10
FR2935431B1 (fr) 2010-09-17
EP2324214B1 (de) 2019-04-10
WO2010023388A1 (fr) 2010-03-04

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