EP4587541A1 - Utilisation d'un monoester dans une composition lubrifiante pour transmissions de - Google Patents
Utilisation d'un monoester dans une composition lubrifiante pour transmissions deInfo
- Publication number
- EP4587541A1 EP4587541A1 EP23772204.6A EP23772204A EP4587541A1 EP 4587541 A1 EP4587541 A1 EP 4587541A1 EP 23772204 A EP23772204 A EP 23772204A EP 4587541 A1 EP4587541 A1 EP 4587541A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricating composition
- weight
- additives
- use according
- mass
- 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.)
- Pending
Links
Classifications
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- 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
- C10M129/70—Esters of monocarboxylic acids
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- 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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/042—Mixtures of base-materials and additives the additives being compounds of unknown or incompletely defined constitution only
-
- 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
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/34—Esters of monocarboxylic 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
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
-
- 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
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic 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
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
- C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids used as base material
-
- 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
- C10M2207/40—Fatty vegetable or animal oils
-
- 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
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base material
-
- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/071—Branched chain compounds
-
- 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
- C10N2030/02—Pour-point; Viscosity index
-
- 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
- C10N2030/54—Fuel economy
-
- 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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- 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
- C10N2040/14—Electric or magnetic purposes
-
- 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
-
- 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
- C10N2040/29—Hybrid or electric engines
- C10N2040/292—Electric engines
Definitions
- the present invention relates to the field of lubricating compositions, more particularly the field of lubricating compositions of transmissions in thermal engine vehicles (gearboxes and/or axles) as well as transmissions, in particular the reduction gear, in propulsion systems of electric or hybrid vehicles. It concerns more particularly the use of a monoester in order to improve the efficiency performances of transmissions in thermal engines as well as the efficiency performances for the reduction gears of electric motors.
- Lubricating compositions also called “lubricants” are commonly used in the various components of motor vehicles for the main purposes of reducing the friction forces between the different metal parts moving in these components, in particular the engine, the transmission and the hydraulic circuit. They are also effective in preventing premature wear or even damage to these parts, and in particular to their surface.
- a lubricating composition is conventionally composed of a base oil to which are generally associated several additives dedicated to stimulating the lubricating performance of the base oil, such as for example friction modifier additives, but also to providing additional performance.
- Lubricating compositions for transmissions must meet numerous requirements, particularly with regard to the strict specifications imposed by automobile manufacturers. In particular, they must have satisfactory properties in terms of viscosity, viscosity-temperature resistance, cold performance, etc. adapted to their implementation at the level of a transmission member, in particular at the level of the gearbox or the bridges, in a vehicle.
- electric vehicle within the meaning of the present invention, we mean a vehicle comprising an electric motor as the sole means of propulsion while a hybrid vehicle comprises a combustion engine and an electric motor as combined means of propulsion.
- the invention aims precisely to propose a monoester which can be entirely biosourced capable of improving the efficiency performance of transmissions in thermal engines as well as the efficiency performance for the reduction gears of electric motors. Summary of the invention
- the lubricating composition comprising 1-methylheptyl laurate is used for transmissions in heat engines and/or for reduction gears in electric motors.
- the lubricating composition comprising 1-methylheptyl laurate is used to improve the efficiency of transmissions.
- the lubricating composition comprising 1-methylheptyl laurate is used to extend the battery life of an electric or hybrid vehicle.
- the lubricating composition comprises 5 to 50% by weight of 1-methylheptyl laurate, preferably 10 to 40% by weight of 1-methylheptyl laurate, relative to the total mass of the lubricating composition.
- FIG 1 schematically represents an electric or hybrid vehicle propulsion system. detailed description
- the invention relates to the use of 1-methylheptyl laurate in a lubricating composition for transmissions.
- the invention relates to the use of a composition comprising 1-methylheptyl laurate as a lubricating composition for transmissions.
- 1-Methylheptyl laurate can be obtained by esterification reaction between lauric acid and octane-2-ol.
- lauric acid and/or octane-2-ol are of biosourced origin.
- Octan-2-ol of biosourced origin can be obtained by cracking ricinoleic acid.
- the carbon content of biological origin can be measured according to the ASTM D6866 standard.
- Said base oil(s), possibly present in a lubricating composition according to the invention, are chosen adequately, with regard to their compatibility with the monoester used according to the invention.
- It can be a mixture of several base oils, for example a mixture of two, three or four base oils.
- Mineral base oils include all types of base oils obtained by atmospheric and vacuum distillation of crude oil, followed by refining operations such as solvent extraction, desalphating, solvent dewaxing, hydrotreating, hydrocracking, hydroisomerization and hydrofinishing .
- Blends of synthetic and mineral oils, which can be biosourced, can also be used.
- the weight average molecular weight of PAO can vary quite widely. Preferably, the mass average molecular weight of the PAO is less than 600 Da.
- the mass average molecular mass of the PAO can also range from 100 to 600 Da, from 150 to 600 Da, or even from 200 to 600 Da.
- the PAOs implemented in the context of the invention having a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, ranging from 1.5 to 8 mm 2 /s are sold commercially by Ineos under the brands Durasyn® 162, Durasyn® 164, Durasyn® 166 and Durasyn® 168.
- a lubricating composition according to the invention may further comprise one or more additives known to those skilled in the art in the field of transmission lubrication, in particular for thermal engines and for propulsion systems of electric or hybrid vehicles.
- the additives which can be incorporated into a composition according to the invention, can be chosen from antioxidants, pour point depressant additives, anti-foam agents, anti-corrosion agents, anti-wear additives and/or extreme pressure, friction modifiers, detergents, dispersing agents and mixtures thereof, in particular among anti-oxidants, pour point depressant additives, anti-foaming agents and anti-corrosion agents.
- a lubricating composition according to the invention may further comprise one or more additives chosen from antioxidants, anti-foams, pour point improvers, viscosity index improvers, and anti-corrosion agents.
- additives chosen from anti-wear additives, friction modifiers, detergents, extreme pressure additives and dispersants can also prove advantageous in the context of the implementation of the lurifying composition according to the invention as a multifunctional fluid, for example for cooling the battery and/or the power electronics, and for lubricating parts of the propulsion system, for example the transmission, in an electric or hybrid vehicle.
- additives can be introduced individually and/or in the form of a mixture like those already available for sale for commercial lubricant formulations for vehicle engines, with a performance level as defined by the ACEA ( Association of European Automobile Manufacturers) and/or the API (American Petroleum Institute), well known to those skilled in the art.
- ACEA Association of European Automobile Manufacturers
- API American Petroleum Institute
- Said additive(s) may be present in the lubricating composition according to the invention in a content less than or equal to 20% by mass, in particular ranging from 0.01 to 20% by mass, preferably from 0.1 to 15% by mass. , more preferably from 0.5 to 10% by mass, relative to the total mass of said composition.
- a lubricating composition used according to the invention can thus comprise at least one antioxidant additive.
- the invention thus relates, according to another of its aspects, to a lubricating composition, in particular capable of lubricating a transmission, in particular of a heat engine or of a propulsion system of an electric or hybrid vehicle, said composition comprising (i) at least one monoester according to the invention, and (ii) at least one antioxidant additive.
- the antioxidant additive generally makes it possible to delay the degradation of the composition in service. This degradation can notably result in the formation of deposits, the presence of sludge or an increase in the viscosity of the composition.
- Antioxidant additives act in particular as free radical inhibitors or hydroperoxide destroyers.
- antioxidant additives mention may be made of phenolic-type antioxidant additives, amine-type antioxidant additives and phosphosulfur-containing antioxidant additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, can generate ash. Phenolic antioxidant additives can be ash-free or in the form of neutral or basic metal salts.
- the antioxidant additives may in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, diphenylamines, diphenylamines substituted by at least one alkyl group in Ci-Ci2, N,N '-dialkyl-aryl-diamines and mixtures thereof.
- the sterically hindered phenols are chosen from compounds comprising a phenol group of which at least one vicinal carbon of the carbon carrying the alcohol function is substituted by at least one alkyl group in Ci-Cio, preferably an alkyl group in CI-C ⁇ , preferably a C4 alkyl group, preferably by the tert-butyl group.
- Anti-wear additives and extreme pressure additives protect rubbing surfaces by forming a protective film adsorbed on these surfaces.
- a lubricating composition may comprise from 0.01 to 2% by weight or from 0.01 to 5% by weight, preferably from 0.1 to 1.5% by weight or from 0.1 to 2% by weight of antifoaming agent, relative to to the total mass of the composition.
- a lubricating composition according to the invention may comprise at least one friction modifier additive.
- Detergent additives generally help reduce the formation of deposits on the surface of metal parts by dissolving secondary oxidation and combustion products.
- the detergent additives which can be used in a lubricating composition are generally known to those skilled in the art.
- the detergent additives can be anionic compounds comprising a lipophilic hydrocarbon group and a hydrophilic head.
- the associated cation may be a metallic cation of an alkali or alkaline earth metal.
- the detergent additives are preferably chosen from alkali metal or alkaline earth metal salts of carboxylic acids, sulfonates, salicylates, naphthenates, as well as phenate salts.
- the alkali and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
- metal salts generally include the metal in stoichiometric quantity or in excess, therefore in quantity greater than the stoichiometric quantity.
- overbased detergent additives the excess metal providing the overbased character to the detergent additive is then generally in the form of a metal salt insoluble in oil, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate .
- a lubricating composition used according to the invention may also comprise at least one pour point depressant additive.
- pour point depressant additives By slowing the formation of paraffin crystals, pour point depressant additives generally improve the cold behavior of the composition.
- pour point depressant additives mention may be made of polyalkyl methacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes and alkylated polystyrenes.
- a lubricating composition used according to the invention may for example comprise from 0.05 to 2% by weight of pour point depressant additive, relative to the total mass of the composition.
- a lubricating composition used according to the invention may comprise at least one dispersing agent.
- a lubricating composition used according to the invention comprises, or even is formed of (i) the monoester according to the invention and (ii) at least one additive chosen from antioxidants, agents anti-foam, pour point depressant additives, anti-corrosion agents, anti-wear and/or extreme pressure additives, friction modifiers, detergents, dispersing agents and mixtures thereof, preferably among anti-foam oxidants, pour point depressant additives, anti-foaming agents, anti-corrosion agents, and mixtures thereof.
- a lubricating composition used according to the invention comprises (i) the monoester according to the invention and (ii) at least one antioxidant additive.
- additives chosen from modifying additives friction, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersants, anti-wear agents -foam, thickeners, corrosion inhibitors, copper passivating agents, and mixtures thereof; and the contents being expressed in relation to the total mass of said composition.
- additives chosen from modifying additives friction, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersants, anti-wear agents -foam, thickeners, corrosion inhibitors, copper passivating agents, and mixtures thereof; and the contents being expressed in relation to the total mass of said composition.
- a lubricating composition used according to the invention comprises, or even consists of:
- mineral or synthetic base oils chosen from group I oils, group II oils, group III oils and group IV oils, and their mixtures;
- additives friction modifiers optionally from 0.01 to 20% by mass, preferably from 0.1 to 15% by mass, more preferably from 0.5 to 10% by mass, of one or more additives chosen from additives friction modifiers, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersants, agents defoamers, thickeners, corrosion inhibitors, copper passivators, and mixtures thereof; and the contents being expressed in relation to the total mass of said composition.
- additives friction modifiers preferably from 0.1 to 15% by mass, more preferably from 0.5 to 10% by mass
- additives friction modifiers preferably from 0.01 to 20% by mass, preferably from 0.1 to 15% by mass, more preferably from 0.5 to 10% by mass, of one or more additives chosen from additives friction modifiers, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives
- a lubricating composition used according to the invention comprises, or even consists of:
- additives chosen from modifying additives friction, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersants, anti-wear agents -foam, the thickeners, corrosion inhibitors, copper passivating agents, and mixtures thereof; and the contents being expressed in relation to the total mass of said composition.
- additives chosen from modifying additives friction, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersants, anti-wear agents -foam, the thickeners, corrosion inhibitors, copper passivating agents, and mixtures thereof; and the contents being expressed in relation to the total mass of said composition.
- a lubricating composition used according to the invention comprises, or even consists of:
- the electric motor typically comprises power electronics (11) connected to a stator (13) and a rotor (14).
- the stator comprises coils, in particular copper coils, which are alternately powered by an electric current. This generates a rotating magnetic field.
- the rotor itself comprises coils, permanent magnets or other magnetic materials, and is rotated by the rotating magnetic field.
- a lubricating composition according to the invention thus has low traction coefficients.
- a lubricating composition defined in the invention can also be used to cool the electric motor of an electric or hybrid vehicle, in particular to cool the power electronics and/or the rotor and/or the stator of the electric motor and /or the gear motor.
- 2-ethylhexanol is not of biosourced origin whereas the 2-octanol used in this example is of biosourced origin.
- the kinematic viscosity was measured at 40°C (KV40) and at 100°C (KV100) according to the ASTM D445 standard.
- mini pour point (mini PE) is measured according to ASTM D7346.
- Viscosity index (VI) is measured according to ASTM D2270.
- the tribological properties can be evaluated by a test on a MTM type tribometer (Mini Traction Machine also called ball-plane), from the PCS Instruments brand. This test makes it possible in particular to evaluate the performance of lubricants in terms of friction in mixed/limit mode depending on the load, pressure or speed conditions applied.
- MTM type tribometer Mini Traction Machine also called ball-plane
- This device makes it possible to put a steel ball and a steel plane into relative motion in order to determine the coefficients of friction/friction for a given lubricating composition, while varying various properties such as speed, load, and temperature.
- the hardened steel surface is reference AISI 52100 with a mirror finish and the ball is also reference AISI 52100 made from hardened steel.
- Table 2 brings together the results of measurements of tribological properties at 40°C (40°C SRR 5%), 100°C (100°C SRR 5%) and 140°C (140°C SRR 5%). [table 2]
- the monoester according to the invention has a better traction coefficient, i.e. a lower traction coefficient, than the comparative monoester of the state of the art.
- This lower traction coefficient will provide a better gain in terms of fuel economy (Fuel -Eco) for a thermal engine and a better gain in terms of battery autonomy for an electric or hybrid vehicle.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Lubricants (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2209270A FR3139828B1 (fr) | 2022-09-15 | 2022-09-15 | Utilisation d’un monoester dans une composition lubrifiante pour transmissions de véhicules |
| PCT/EP2023/075352 WO2024056827A1 (fr) | 2022-09-15 | 2023-09-14 | Utilisation d'un monoester dans une composition lubrifiante pour transmissions de |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4587541A1 true EP4587541A1 (fr) | 2025-07-23 |
Family
ID=84053354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23772204.6A Pending EP4587541A1 (fr) | 2022-09-15 | 2023-09-14 | Utilisation d'un monoester dans une composition lubrifiante pour transmissions de |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20260092233A1 (fr) |
| EP (1) | EP4587541A1 (fr) |
| JP (1) | JP2025530299A (fr) |
| KR (1) | KR20250069868A (fr) |
| CN (1) | CN119855889A (fr) |
| FR (1) | FR3139828B1 (fr) |
| MX (1) | MX2025002844A (fr) |
| WO (1) | WO2024056827A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5288861B2 (ja) * | 2008-04-07 | 2013-09-11 | Jx日鉱日石エネルギー株式会社 | 潤滑油組成物 |
| FR3094377B1 (fr) * | 2019-04-01 | 2021-05-21 | Total Marketing Services | Composition lubrifiante pour transmission |
| US20230002697A1 (en) * | 2019-12-04 | 2023-01-05 | The Lubrizol Corporation | Use of ester base stocks to improve viscosity index and efficiency in driveline and industrial gear lubricating fluids |
-
2022
- 2022-09-15 FR FR2209270A patent/FR3139828B1/fr active Active
-
2023
- 2023-09-14 US US19/110,164 patent/US20260092233A1/en active Pending
- 2023-09-14 JP JP2025514753A patent/JP2025530299A/ja active Pending
- 2023-09-14 WO PCT/EP2023/075352 patent/WO2024056827A1/fr not_active Ceased
- 2023-09-14 CN CN202380064659.0A patent/CN119855889A/zh active Pending
- 2023-09-14 KR KR1020257008182A patent/KR20250069868A/ko active Pending
- 2023-09-14 EP EP23772204.6A patent/EP4587541A1/fr active Pending
-
2025
- 2025-03-10 MX MX2025002844A patent/MX2025002844A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN119855889A (zh) | 2025-04-18 |
| MX2025002844A (es) | 2025-06-02 |
| US20260092233A1 (en) | 2026-04-02 |
| JP2025530299A (ja) | 2025-09-11 |
| KR20250069868A (ko) | 2025-05-20 |
| FR3139828B1 (fr) | 2024-09-20 |
| FR3139828A1 (fr) | 2024-03-22 |
| WO2024056827A1 (fr) | 2024-03-21 |
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