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EP2488618A1 - Motorschmiermittel - Google Patents

Motorschmiermittel

Info

Publication number
EP2488618A1
EP2488618A1 EP10771215A EP10771215A EP2488618A1 EP 2488618 A1 EP2488618 A1 EP 2488618A1 EP 10771215 A EP10771215 A EP 10771215A EP 10771215 A EP10771215 A EP 10771215A EP 2488618 A1 EP2488618 A1 EP 2488618A1
Authority
EP
European Patent Office
Prior art keywords
group
oil
ester
composition 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
EP10771215A
Other languages
English (en)
French (fr)
Other versions
EP2488618B1 (de
Inventor
Jean-Paul Souchez
Alain Bouffet
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.)
TotalEnergies Marketing Services SA
Original Assignee
Total Raffinage Marketing 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 Total Raffinage Marketing SA filed Critical Total Raffinage Marketing SA
Publication of EP2488618A1 publication Critical patent/EP2488618A1/de
Application granted granted Critical
Publication of EP2488618B1 publication Critical patent/EP2488618B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/76—Esters containing free hydroxy or carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines

Definitions

  • the present invention relates to the lubrication of hybrid vehicle engines, particularly heavy-duty vehicles with hybrid engines.
  • Hybrid drive systems overcome these disadvantages by implementing an electric motor and an internal combustion engine in series or in parallel.
  • a special feature of hybrid systems is the "stop-start” system. The vehicle starts in electric mode, then goes into thermal mode as soon as the speed increases, and vice versa. The engine is stopped at each stop of the vehicle.
  • the internal combustion engine of hybrid vehicles undergoes, during its life, a number of stops and starts much higher than in a conventional vehicle. This potentially generates, for the internal combustion engines of hybrid vehicles, specific wear problems, in particular in the long term.
  • WO2008 / 067259 discloses a lubricating composition
  • a base oil and the condensation product of a dicarboxylic acid compound with a dialkoxy or diol substitution, and a C6 to C12 alcohol.
  • US4820431 discloses a railway diesel engine lubricating composition
  • a railway diesel engine lubricating composition comprising a base oil, a dispersant, an overbased phenolate, an alkyl sulfonate and a polyhydroxy compound.
  • US2008 / 090741 discloses a lubricating composition
  • a lubricating composition comprising a base oil, an overbased detergent and a weakly basic detergent, with a salt to metal ratio of between 3 and 8.
  • Application GB 2454349 discloses a method of heating the lubricating oil of diesel engines of hybrid vehicles, with the aim of avoiding problems of cold start and loss of power due to friction. This system requires an ancillary device, and goes against the observations made in test.
  • R, R 'and R "independently of one another are a linear or branched, saturated or unsaturated hydrocarbon group optionally substituted by one or more aromatic groups, and having 1 to 30 carbon atoms, and / or its borated derivatives for the lubrication of internal combustion engines of vehicles with hybrid engines whose maximum torque, measured between 1000 and 3000 revolutions / minute, is greater than 1000 Nm
  • the ester (a) contains at least one free OH hydroxyl group belonging to the R group, said OH group being located in the alpha, beta or gamma position with respect to the carbon of the CO function of an ester function on which the group R is attached, or contains at least one free hydroxyl OH group belonging to the group R ', said OH group being located in the beta, gamma or delta position with respect to the oxygen of the COO group of an ester function on which the R' group is attached.
  • the R 'group of the ester (a) represents a C 1 to C 10 , preferably C 2 to C 8 , even more preferably C 3 to C 6, group .
  • n 1 and the groups R and R "of the ester (a) represent groups Cs to C 25 , preferably C 12 to C 18 .
  • At least one ester (a) is chosen from monoesters or diesters of glycerol, even more preferentially chosen from glycerol mono or di oleate, mono or di stearate or mono or di isostearate. glycerol and / or their borated derivatives.
  • n is strictly greater than 1 and the R group of the ester (a) represents a C 1 -C 5 , preferably C 1 -C 3, group .
  • At least one ester (a) is chosen from citrates, tartrates, malates, lactates, mandelates, glycolates, hydroxypropionates, hydroxyglutarates and / or their borated derivatives.
  • the kinematic viscosity at 100 ° C of the engine oil used according to the invention is between 16.9 and 21.9 cSt.
  • the kinematic viscosity at 100 ° C of the engine oil used according to the invention, measured according to ASTM D445, is between 21.9 and 26.1 cSt.
  • the internal combustion engines lubricated according to the invention are diesel engines.
  • the hybrid heavy-vehicle vehicles whose internal combustion engine is lubricated according to the invention are parallel hybrids.
  • the use of an engine oil according to the invention aims to reduce the wear of internal combustion engines.
  • an oil according to the invention is made on vehicles that operate according to the urban cycle ETC defined by the European Directive 1999/96 / EC.
  • the subject of the present invention is also a lubricating composition for a hybrid vehicle internal combustion engine of maximum torque greater than 1000 Nm between 1000 and 3000 revolutions minutes, whose kinematic viscosity at 100 ° C. measured according to the ASTM D445 standard is between 16 and 27 cSt, and including:
  • the lubricating composition according to the invention further comprises:
  • an additive composition for engine lubricant comprising one or more detergent additives, one or more dispersing additives, one or more antioxidant additives, preferably amino or phenolic additives, one or more antiwear additives, preferentially chosen; among the zinc dithiophosphates.
  • the subject of the present invention is the lubrication of the internal combustion engines of heavy goods vehicles equipped with hybrid systems, in particular those intended to circulate mainly in urban areas, such as delivery utilities, garbage trucks or vehicles used for transporting goods.
  • hybrid vehicle here means vehicles associating an internal combustion engine with an electric motor, preferably the systems where these two motors are associated in parallel, called parallel hybrid vehicles.
  • the operating principle of these vehicles is as follows: • during stationary phases (where the vehicle is stationary), both engines are stopped,
  • kinetic energy is used to recharge the batteries.
  • Heavy-duty vehicles typically have a payload of more than 3.5 tonnes.
  • the engines that equip them are, for both conventional vehicles and for hybrid vehicles, four-stroke engines, most often diesel, which have power characteristics, and especially high torque.
  • the heavy-duty engines have a speed of between 800 and 3000 revolutions / min.
  • the maximum or plateau of the power and torque curves is obtained between 1000 and 3000 rpm, most often between 1000 and 1700 rpm.
  • the maximum torque is generally obtained around 1200 revolutions / minute
  • the present invention relates to the lubrication of internal combustion engines of vehicles with hybrid engines, said internal combustion engines having a maximum torque (measured between 1000 and 3000 rpm), greater than 1000 Nm, preferably greater than 1500, or at 1700, or at 2000 Nm
  • said internal combustion engines are diesel engines.
  • vehicles with hybrid powertrain are parallel hybrid vehicles.
  • the power or torque characteristics referred to herein refer to net power or net torque as defined in SAE J 1349.
  • the present invention more preferably relates to the lubrication of internal combustion engines of heavy goods vehicles equipped with hybrid systems circulating in an urban environment, where the stop / start phenomenon and the resulting wear are increased.
  • ETC cycle European Transient Cycle
  • FIGE European Directive 1999/96 / EC of 13 December 1999.
  • the first part of the cycle (from 0 to 600 s) characterizes urban functioning. This part of the cycle will be referred to as the "ETC Urban Cycle”.
  • the motor oils used according to the present invention comprise one or more base oils, generally representing at least 70% by weight of said motor oils, and up to 85% or 90% by weight and more.
  • the base oil (s) used in the engine oils according to the present invention may be oils of mineral or synthetic origin of groups I to V according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) as summarized. below, alone or mixed.
  • oils may be oils of vegetable, animal or mineral origin.
  • the mineral base oils according to the invention include all types of bases obtained by atmospheric distillation and vacuum of crude oil, followed by refining operations such as solvent extraction, desalphating, solvent dewaxing, hydrotreatment, hydrocracking and hydro iso meris ation, hydro finish.
  • the base oils of the compositions according to the present invention may also be synthetic oils, such as certain esters of carboxylic acids and alcohols, or polyalphaolefins.
  • the polyoaplphafines used as base oils for example, are obtained from monomers having from 4 to 32 carbon atoms (for example octene, decene), and a viscosity at 100 ° C of between 1.5 and 15 Cst. Their weight average molecular weight is typically between 250 and 3000.
  • Mixtures of synthetic and mineral oils may also be employed, for example when formulating multigrade oils to avoid cold start problems.
  • a viscosity index (VI) improving polymer which makes it possible to guarantee a good cold performance and a minimum viscosity at high temperature
  • a viscosity index (VI) improving polymer such as, for example, polymeric esters, olefins copolymers (OCP), homopolymers or copolymers of styrene, butadiene or isoprene, polymethacrylates (PMA).
  • the motor oils according to the present invention may contain from about 0.0 to 20%, or from 5 to 15%, or from 7 to 10% by weight of VI improvers, for example selected from polymeric esters, olefins copolymers (OCP), homopolymers or copolymers of styrene, butadiene or isoprene, polymethacrylates (PMA).
  • VI improvers for example selected from polymeric esters, olefins copolymers (OCP), homopolymers or copolymers of styrene, butadiene or isoprene, polymethacrylates (PMA).
  • the engine oils according to the invention preferably have a viscosity index value or VI, measured according to ASTM D2270 greater than 130, preferably greater than 140, preferably greater than 150.
  • compositions according to the present invention there is no limitation to the use of any particular base oil (and optionally VI improving polymer) for making the compositions according to the present invention, except that their amount and their nature must be adjusted.
  • a viscosity grade sufficiently viscous that is to say a kinematic viscosity (KV100) at 100 ° C according to ASTM D445, between 16 and 27 cSt.
  • the motor oils according to the invention are preferably grade 50 or 60 according to the SAEJ300 classification, that is to say that their kinematic viscosity at 100 ° C. according to ASTM D445 is preferably between 16.9 and 21.9 cSt or between 21, 9 and 26.1 cSt.
  • the engine oils according to the invention are multigrade oils of 20 W grade, preferably of 15W grade according to the SAEJ classification, ie their dynamic viscosity (CCS) according to ASTM D5293 is less than 9500 mPa.s. at -15 ° C, preferably below 7000 mPa.s at -20 ° C.
  • CCS dynamic viscosity
  • the motor oils used in the invention comprise at least one hydroxyl ester (a) of formula
  • m is an integer of 0 to 4, preferably 0 to 2
  • n is an integer of 1 to 8, preferably 1 to 4
  • the ester (a) contains at least one free OH hydroxyl group belonging to the R group, said OH group being located at the alpha, beta or gamma position with respect to the carbon of the CO 2 function.
  • R ' represents a C 1 -C 10 , preferably C 2 -C 6 , even more preferentially C 3 -C 6, group .
  • n is equal to 1 and R and R "represent C 6 to C 6 groups, preferably C 12 to C 18 groups.
  • R and / or R" are saturated, more stable compounds are obtained. oxidation. The presence of unsaturation leads to liquid compounds at room temperature, which are more easily solubilized in the oils.
  • the hydroxylated esters (a) may be chosen from monoesters or diesters obtained from glycerol, such as glycerol mono or di oleate, mono- or di-stearate or glycerol mono or di isostearate. , and their borated derivatives.
  • n is an integer strictly greater than 1 and the R group of the ester (c) represents a group -C 5, preferably C l -C 3.
  • the hydroxylated esters (a) may also be chosen from citrates, tartrates, malates, lactates, mandelates, glycolates, hydroxypropionates, hydroxyglutarates or their borated derivatives.
  • esters of formula R (OH) m (COOR '(OH) p (OOCR ") q ) n are prepared according to methods known to those skilled in the art, in particular by reaction of a polycarboxylic acid of formula R (OH) m (COOH) n with an alcohol of formula R '(OH) or a polyol of formula R' (OH) p with monocarboxylic acids RCOOH and / or R'COOH, the substituents R, R ', R and the indices m, n, p being as defined above.
  • oils used according to the invention may comprise between 0.5 and 10% by weight, preferably between 1 and 7% by weight, or between 2 and 5% by weight of such esters (a).
  • level of antiwear additive oils used according to the invention may be identical to that of conventional oils for internal combustion engine heavy vehicles.
  • the engine oils used according to the invention may further contain any type of additives suitable for use as engine oil, particularly heavy-duty engine.
  • additives may be introduced individually and / or included in packages of additives used in commercial four-stroke engine lubricant formulations, with performance levels as defined by ACEA (Association of European Automobile Manufacturers) and / or ⁇ (American Petroleum Institute), for example respectively ACEA E9 and API CJ-4 well known to those skilled in the art.
  • ACEA Association of European Automobile Manufacturers
  • API CJ-4 American Petroleum Institute
  • compositions according to the invention may contain, in particular and without limitation, anti-wear and extreme pressure additives, antioxidants, overbased or non-overbased detergents, pour point improvers, dispersants, antifoam, thickeners. ..
  • the anti-wear and extreme pressure additives protect the friction surfaces by forming a protective film adsorbed on these surfaces.
  • the most commonly used is Zinc di thiophosphate or DTPZn. This category also contains various phosphorus, sulfur, nitrogen, chlorine and boron compounds.
  • anti-wear additives there is a wide variety of anti-wear additives, but the most used category in motor oils is that of phospho-sulfur-containing additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or DTPZn.
  • Preferred compounds are of formula
  • DTPZn ((SP (S) (OR1) (OR2)) 2, where R1 and R2 are alkyl groups, preferably containing from 1 to 18 carbon atoms, DTPZn is typically present at levels of the order of 0, 1 to 2% by weight in the motor oils.
  • Phosphates of amines, polysulfides, especially sulfur-containing olefins, are also commonly used anti-wear additives.
  • the anti-wear and extreme pressure additives are generally present in the compositions for heavy-duty engine lubricants at contents of between 0.5 and 6%, preferably between 0.7 and 2%, preferably between 1 and 1.5% by weight.
  • Antioxidants delay the degradation of oils in service, which can result in the formation of deposits, the presence of sludge, or an increase in the viscosity of the oil. They act as free radical inhibitors or destroyers of hydroperoxides.
  • the antioxidants commonly used are the antioxidants of the phenolic type, amines.
  • Phenolic anoxidants may be ashless, or may be in the form of neutral or basic metal salts. Typically, they are compounds containing a sterically hindered hydroxyl group, for example when 2 hydroxyl groups are in the o or p position of each other, or when the phenol is substituted with an alkyl group containing at least 6 carbon atoms. .
  • Amino compounds are another class of antioxidants that can be used alone or possibly in combination with phenolics.
  • Typical examples are aromatic amines, of formula R 8 R 9 R 10 N, where R 5 is an aliphatic group, or an optionally substituted aromatic group, R 9 is an optionally substituted aromatic group, Rio is hydrogen, or a group alkyl or aryl, or a group of formula RnS (O) x R12, where R11 is alkylene, alkenylene, or aralkylene, and x is 0, 1 or 2.
  • Sulfurized alkyl phenols or their alkali and alkaline earth metal salts are also used as antioxidants.
  • antioxidants are that of oil-soluble copper compounds, for example copper thio or dithiophosphate, copper and carboxylic acid salts, copper dithiocarbamates, sulphonates, phenates, acetylacetonates. Copper salts I and II, succinic acid or anhydride are used.
  • These compounds are typically present in lubricating compositions for engine weight lords in amounts of between 0.1 and 5% by weight, preferably between 0.3 and 2% by weight, even more preferably between 0, 5 and 1.5% by weight.
  • Detergents reduce the formation of deposits on the surface of metal parts by dissolving the secondary products of oxidation and combustion, and allow the neutralization of certain acidic impurities from combustion and found in the oil.
  • the detergents commonly used in the formulation of lubricating compositions are typically anionic compounds having a long lipophilic hydrocarbon chain and a hydrophilic head.
  • the associated cation is typically a metal cation of an alkali or alkaline earth metal.
  • the detergents are preferably chosen from alkali metal or alkaline earth metal salts of carboxylic acids, sulphonates, salicylates and naphthenates, as well as the salts of phenates, preferably of calcium, magnesium, sodium or barium. These metal salts may contain the metal in an approximately stoichiometric amount or in excess (in an amount greater than the stoichiometric amount). In the latter case, we are dealing with so-called overbased detergents.
  • the excess metal providing the overbased detergent character is in the form of oil-insoluble metal salts, for example carbonate, hydroxide, oxalate, acetate, glutamate, preferably carbonate, preferably calcium, magnesium, sodium or barium.
  • the lubricant compositions according to the present invention may contain any type of detergent known to those skilled in the art, neutral or overbased.
  • the more or less overbased character of the detergents is characterized by the BN (base number), measured according to the ASTM D2896 standard, and expressed in mg of KOH per gram.
  • Neutral detergents have a BN between about 0 and 80.
  • the overbased detergents they BN values typically of the order of 150 and more, or 250 or 450 or more.
  • the BN of the lubricant composition containing detergents is measured by ASTM D2896 and expressed as mg KOH per gram of lubricant.
  • the amounts of detergents included in the motor oils according to the invention are adjusted so that the BN of said oils, measured according to ASTM D2896, is between 5 and less than or equal to 20 mg of KOH per gram of d motor oil, preferably between 8 and 15 mg of KOH per gram of engine oil
  • Pour point depressant additives improve the cold behavior of oils by slowing the formation of paraffin crystals. They are for example alkyl polymethacrylates, polyacrylates, polyarylamides, polyalkylsphenols, polyalkylnaphthalenes, alkylated polystyrene, etc. They are generally present in the oils according to the invention at contents of between 0.1 and 0.5% by weight. .
  • Dispersants for example succinimides, PIB (polyisobutene) succinimides,
  • Mannich bases ensure the suspension and evacuation of insoluble solid contaminants consisting of secondary oxidation products that are formed when the engine oil is in use.
  • the dispersant level is typically relatively higher in heavy-duty engine oils than in light-duty engine oils, mainly due to longer oil change intervals. It is typically between 4 and 10% by weight, preferably between 4.5 and 7% by weight.
  • the system tested includes a 6-cylinder diesel engine with a maximum torque of 1200 Nm from 1200 to 1700 rpm. It is a hybrid type parallel and includes a starter alterno between the clutch and the gearbox of the vehicle.
  • the engine oil is around 100 ° C in these tests.
  • the wear is followed by a usual technique of radiotracers, consisting of irradiating the surface of the bearings whose wear is to be tested, and measuring at the end of the test the radioactivity of the engine oil, which contains proportionally irradiated metal particles. to wear the parts in question.
  • Oil A is a 10W30 heavy duty commercial grade engine oil formulated with an ACE A E9 performance lighter engine oil additive package.
  • Oils B and C contain the same additivation but are of grade respectively 15W50 and 20W50.
  • the oil D is an oil according to the invention, which also contains the same additivation and is grade 15W50.
  • the additive package is identical for oils A, B, C and D: it is a classic package for diesel engine oils (ACEA E9 performance level), including:
  • ZnDDPs zinc dithiophosphate antiperspirants
  • Tests with the reference oil A showed a high wear rate, corroborated by visual observations (wear on 40% of the surface of the first bearing).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
EP10771215.0A 2009-10-16 2010-10-15 Verwendung eines motorschmiermittels Active EP2488618B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0904963A FR2951456B1 (fr) 2009-10-16 2009-10-16 Lubrifiant moteur
PCT/IB2010/054691 WO2011045773A1 (fr) 2009-10-16 2010-10-15 Lubrifiant moteur

Publications (2)

Publication Number Publication Date
EP2488618A1 true EP2488618A1 (de) 2012-08-22
EP2488618B1 EP2488618B1 (de) 2018-09-26

Family

ID=42138951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10771215.0A Active EP2488618B1 (de) 2009-10-16 2010-10-15 Verwendung eines motorschmiermittels

Country Status (4)

Country Link
EP (1) EP2488618B1 (de)
BR (1) BR112012008947B1 (de)
FR (1) FR2951456B1 (de)
WO (1) WO2011045773A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2983867B1 (fr) 2011-12-09 2014-08-22 Total Raffinage Marketing Lubrifiant moteur pour vehicules a motorisation hybride ou micro-hybride
FR3115291B1 (fr) * 2020-10-20 2023-11-17 Total Marketing Services Utilisation d’ester de dialkylène glycol pour diminuer le frottement dans les véhicules équipés de moteur hybride

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US4683069A (en) * 1981-05-06 1987-07-28 Exxon Research & Engineering Co. Glycerol esters as fuel economy additives
US4479883A (en) * 1982-01-06 1984-10-30 Exxon Research & Engineering Co. Lubricant composition with improved friction reducing properties containing a mixture of dithiocarbamates
US4459223A (en) * 1982-05-05 1984-07-10 Exxon Research And Engineering Co. Lubricant oil composition with improved friction reducing properties
US4820431A (en) * 1986-02-28 1989-04-11 Amoco Corporation Railway lubricating oil
MY145889A (en) * 2004-07-08 2012-05-15 Shell Int Research Lubricating oil composition
US7538076B2 (en) * 2005-03-28 2009-05-26 The Lubrizol Corporation Lubricant and concentrate compositions comprising hindered-phenol-containing diester antioxidant and method thereof
US7482312B2 (en) * 2005-04-01 2009-01-27 Shell Oil Company Engine oils for racing applications and method of making same
US20080090741A1 (en) * 2006-10-16 2008-04-17 Lam William Y Lubricating oils with enhanced piston deposit control capability
WO2008067259A1 (en) * 2006-11-28 2008-06-05 The Lubrizol Corporation Tartaric acid derivatives as fuel economy improvers and antiwear agents in crankcase oils and preparation thereof
GB0721262D0 (en) 2007-10-30 2007-12-05 Ford Global Tech Llc A method for heating the oil of an engine
FR2924439B1 (fr) * 2007-12-03 2010-10-22 Total France Composition lubrifiante pour moteur quatre temps a bas taux de cendres
WO2010016856A1 (en) * 2007-12-12 2010-02-11 The Lubrizol Corporation Marine diesel cylinder lubricants for improved fuel efficiency

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Also Published As

Publication number Publication date
FR2951456A1 (fr) 2011-04-22
FR2951456B1 (fr) 2011-12-09
BR112012008947A2 (pt) 2020-09-15
BR112012008947B1 (pt) 2021-07-20
WO2011045773A1 (fr) 2011-04-21
EP2488618B1 (de) 2018-09-26

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