EP4634341A1 - Huiles lubrifiantes re-raffinées pour améliorer les propriétés d'économie d'énergie des systèmes de motorisation - Google Patents
Huiles lubrifiantes re-raffinées pour améliorer les propriétés d'économie d'énergie des systèmes de motorisationInfo
- Publication number
- EP4634341A1 EP4634341A1 EP23822034.7A EP23822034A EP4634341A1 EP 4634341 A1 EP4634341 A1 EP 4634341A1 EP 23822034 A EP23822034 A EP 23822034A EP 4634341 A1 EP4634341 A1 EP 4634341A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refined
- lubricating oil
- lubricating
- partly
- weight
- 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
- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
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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
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
-
- 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
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- 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
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- 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
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- 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
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- 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
- C10N2030/74—Noack Volatility
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- 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
Definitions
- the present invention relates to the field of lubricating compositions, more particularly the field of lubricating compositions used for the lubrication of moving parts in stationary or mobile motor systems, in particular in vehicles.
- It relates more particularly to the use of re-refined lubricating oils in lubricating compositions intended for the lubrication of motor systems in order to improve their properties in terms of energy efficiency, in other words their ability to ultimately limit the energy consumption of the motor system.
- 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.
- Combustion engines generate CO2 in operation due to the combustion of the fuel they use to operate.
- Current environmental concerns particularly with a view to reducing carbon dioxide emissions, induce an urgent need to reduce the fuel consumption of motor vehicles.
- lubricants represent an effective means of acting on fuel consumption via their impact on the friction forces generated between the different components of engine systems, for example in motor vehicles.
- Lubricants with good traction or friction performance advantageously allow a reduction in friction in hydrodynamic lubrication regimes and, consequently, a reduction in fuel consumption.
- the formulation of lubricants with good traction or friction performance represents an important issue insofar as it constitutes an important lever in reducing fuel consumption, and therefore for reducing carbon dioxide emissions and, more generally, in reducing the energy consumption of motorization systems.
- the present invention aims precisely to propose new lubricating compositions intended for the lubrication of engine systems, in particular in vehicles, making it possible to lead to improved performance in terms of energy saving, for example in terms of fuel saving.
- the invention relates, according to a first of its aspects, to the use of at least one lubricating oil at least partly re-refined to improve the energy efficiency properties of a lubricating composition. intended for a motorization system.
- the invention relates to the use of at least one lubricating oil at least partly re-refined to improve the energy efficiency properties of a lubricating composition intended for a motorization system; in which the at least partly re-refined lubricating oil comes from a used lubricant having been subjected to one or more prior stages of dehydration, distillation, filtration, hydrogenation, liquid/liquid extraction, decantation and/or passage of the used lubricant over an adsorbent material.
- lubricating oil at least partly re-refined also called more simply in the remainder of the text "re-refined oil”, “regenerated oil” or even “recycled oil”, designates a oil derived at least in part from a used lubricating composition having been subjected to one or more treatment steps known as re-refining treatment.
- used lubricating composition (or more simply “used lubricant” or “used lubricating oil”) is intended to mean any lubricating composition having been used for the lubrication of moving parts, in particular metal parts, of a mechanical system, such as and not limited to bearings, gears or motors.
- Used lubricating oil can come from different sources.
- it may be a lubricant used for the lubrication of a motor system, in particular "mobile”, or even for the lubrication of a so-called industrial system, especially “stationary”.
- used lubricating oils include a number of degradation products derived from the oil itself or from the additives it contains, as well as metal particles, metal oxides and other elements, for example from the engine.
- a used oil may contain in particular a high content of undesirable elements, for example calcium (Ca), iron (Fe), magnesium (Mg), sodium (Na), nickel (Ni), phosphorus (P ), silicon (Si), chlorine (Cl), zinc (Zn) etc.
- a re-refined lubricating oil is thus an oil obtained at the end of one or more stages of treatment of a used lubricant, aimed at eliminating, at least in part, a certain number of contaminating elements present therein, such as dust, water, fuel fractions, metallic elements and other residues resulting from the degradation of the additives present in the lubricant.
- the at least partly re-refined lubricating oils used according to the invention have characteristics, in particular in terms of content of saturated compounds, sulfur content and index of viscosity, meeting the criteria defined by the API classification for Group I or Group II oils.
- the at least partly re-refined lubricating oils used according to the invention preferably have a kinematic viscosity measured at 100°C according to the ASTM D445 standard greater than or equal to 4.0 mm 2 /s, in particular between 4, 0 and 12 mm 2 /s, in particular greater than or equal to 4.3 mm 2 /s and more particularly between 4.4 and 10 mm 2 /s, in particular between 4.5 and 6 mm 2 /s.
- “Energy efficiency” means the ability of a lubricating composition to ultimately limit the energy consumption of a mobile or stationary engine system, combustion, hybrid or electric, in particular, but not limited to, by reducing the coefficient traction or friction, more particularly at the level of the motor itself, but also of the transmission components, such as the reduction gear, the gear(s), the bridges, the bearings. This energy efficiency results in a reduction in fuel consumption for a combustion engine (“Fuel Economy” or FE) or in a longer lifespan or recharge interval for an electric motor.
- FE Fuel economy
- the invention also relates to a process or method for improving the energy efficiency, for example the Fuel-Eco properties, of a lubricant intended for an engine system, by implementing one or more oils in the formulation of the lubricant. base at least partly re-refined.
- the invention relates to the use of at least one lubricating oil at least partly re-refined in a lubricating composition intended for a motor system equipped with an internal combustion engine, to improve its properties of Fuel-Eco.
- re-refined lubricating oils can thus be used to improve the “Energy Efficiency” properties of lubricants for various engine systems, particularly in vehicles, including light vehicles, at combustion engine, electric or hybrid; heavy goods vehicles, or even marine vehicles.
- said re-refined lubricating oil(s) may represent more than 50% by weight, in particular more than 70% by weight, in particular more than 80% by weight and more particularly more than 90% by weight, of the total mass of the lubricating composition. .
- said re-refined lubricating oil(s) can be used as sole base oil(s), in other words, without adding a separate base oil, for example base oil. new. Alternatively, they can be used in combination with at least one new base oil.
- the lubricating composition is formed solely from one or more re-refined lubricating oils.
- the use of one or more re-refined lubricating oils makes it possible to improve the energy efficiency of the lubricating compositions by reducing their traction coefficient.
- said lubricating oil(s) at least partly re-refined are used in particular according to the invention to reduce the traction coefficient of the lubricating composition.
- This traction coefficient denoted COT
- MTM tribometer for example under the conditions detailed in the examples.
- the inventors have discovered that recycled oils have reduced traction coefficients, compared to new oils, which make them particularly advantageous for improving the energy efficiency of lubricants.
- a lower traction coefficient makes it possible to effectively reduce friction losses in mechanical contacts, and thus to reduce the energy consumption of the engine, for example the fuel consumption of an internal combustion engine.
- the re-refined oils allow a reduction in the traction coefficient over a wide temperature range, corresponding to the temperatures encountered in engines, in particular for temperatures ranging from 40°C to 100°C.
- the invention also relates to the use of a lubricating oil that is at least partly re-refined to reduce the traction coefficient of a lubricating composition intended for the lubrication of an engine system.
- It also relates to a process or a method for reducing the traction coefficient of a lubricant intended for the lubrication of a motor system, by implementing in the formulation of the lubricant one or more base oils at least partly re- refined.
- the invention also relates, according to another of its aspects, to the use of a lubricating composition based on at least one lubricating oil at least partly re-refined, to reduce energy consumption or improve the economy properties.
- energy of an engine system lubricated by means of said lubricating composition for example fuel consumption in the context of a combustion engine system.
- said motorization system may in particular be a mobile or stationary motorization system, combustion, electric or hybrid, in particular in a vehicle, in particular in a light vehicle, heavy goods vehicle or vehicle. marine.
- the invention also relates to a method or method for reducing energy consumption or for improving the energy saving properties of a motor system, in particular in a vehicle, comprising the lubrication of at least one of the parts of the motor system with a lubricating composition comprising at least one at least partly re-refined oil.
- step (iii) supplementing said lubricating oil at least partly re-refined from step (i), or the mixture of lubricating oils from step (ii), with one or more additives, for example as described in the rest of the text;
- step (iv) use the lubricant obtained at the end of step (iii) for the lubrication of at least one mechanical part of said motor system
- the regenerated lubricating oils have a reduced Noack volatility compared to that of a virgin base oil.
- said lubricating oil(s) at least partly re-refined are used in particular according to the invention to reduce the Noack volatility of the lubricating composition.
- the Noack volatility can in particular be determined according to the CEC L-40-93 standard.
- the invention also relates to the use of a lubricating oil that is at least partly re-refined to reduce the volatility of a lubricating composition intended for the lubrication of an engine system.
- It also relates to a process or a method for reducing the volatility of a lubricant intended for the lubrication of an engine system, by implementing in the formulation of the lubricant one or more base oils at least partly re-refined.
- the use of re-refined lubricating oils according to the invention thus makes it possible to meet current expectations for reducing environmental impact and conserving resources via two levers: on the one hand, the formulation of lubricants based on regenerated lubricating oils makes it possible to reduce the carbon footprint of the products, compared to the use of virgin base oils and, on the other hand, as described previously, the use of base oils rerefined makes it possible to improve the energy efficiency of lubricating compositions, in particular by reducing the coefficient of traction, and in particular to act on reducing the fuel consumption of combustion engine systems and therefore on CO2 emissions.
- the percentages are mass percentages. The percentages are therefore expressed in mass relative to the total mass of the composition.
- Lubricating oil at least partly re-refined
- the base oil used to improve the properties in terms of energy efficiency of the lubricating compositions is a lubricating oil at least partly re-refined, also called “regenerated oil” or “recycled oil”, otherwise said a lubricating oil resulting from a used lubricating composition having been subjected to one or more re-refining treatment steps.
- a used lubricating composition may be a mixture of several used lubricating compositions, coming from the same source or from several different sources.
- the used lubricating compositions and, consequently, the regenerated lubricating oils comprise, in majority quantity, one or more base oils conventionally used in the field of lubricants, such as mineral, synthetic or natural, animal or vegetable oils or mixtures thereof. .
- base oils may be a mixture of several base oils, for example a mixture of two, three, or four base oils.
- These base oils can be of natural origin, for example from plants or animals, such as vegetable, animal, fish oils, and mixtures thereof.
- oils are rapeseed oil, canola oil, tall oil, sunflower oil, soybean oil, hemp oil, olive oil, linseed oil, mustard oil, palm oil, peanut oil, castor oil, coconut oil, animal fats, and mixtures thereof.
- these base oils are oils of mineral or synthetic origin belonging to groups I to V according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) and presented in the following table, or their mixtures.
- the used lubricating composition from which the regenerated lubricating oil used according to the invention is derived, may comprise at least 50% by weight of base oil(s) relative to its total weight, in particular at least 60% by weight of base oil(s), and more particularly between 60 and 99% by weight of base oil(s).
- the re-refined lubricating oil used according to the invention can result from the treatment of a used lubricating composition having been used for the lubrication of a motor system, in particular "mobile”, that is to say including light vehicles, heavy goods vehicles, mobile machines called “off road”, or even marine vehicles.
- the re-refined lubricating oil used according to the invention can come from the treatment of a used lubricating composition having been used for the lubrication of a so-called industrial system, in particular "stationary” ", that is to say including without limitation turbines, compressors, hydraulic systems, gears, or even forming or cutting machines.
- a used lubricating composition, from which the regenerated lubricating oil used according to the invention is derived, may contain various conventional additives in the field of lubricants, such as friction modifier additives, extreme pressure additives, anti-wear additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersing agents, anti-foaming agents, thickeners, and mixtures thereof.
- friction modifier additives such as friction modifier additives, extreme pressure additives, anti-wear additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersing agents, anti-foaming agents, thickeners, and mixtures thereof.
- friction modifier additives such as friction modifier additives, extreme pressure additives, anti-wear additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersing agents, anti-foaming
- the properties of the used lubricating composition are degraded due to its use, for a more or less long period, for the lubrication and/or cooling of a mechanical system, in particular a motor system, such as than a combustion engine.
- used lubricating compositions may thus contain one or more additives described above and impurities resulting from the degradation of additives originally present in the lubricant, or resulting from wear of moving mechanical parts.
- the regenerated lubricating oil used according to the invention comes more particularly from a used lubricant having been subjected to one or more prior pre-treatment steps known in the field of re-refining used lubricants.
- these treatment steps aim to eliminate, at least partially, water, solid particles, fuel and/or other contaminants, such as hydrocarbons.
- polycyclic aromatics PAHs
- PAHs polycyclic aromatics
- the regenerated lubricating oil used according to the invention comes from a used lubricant having been subjected to one or more prior stages of dehydration, distillation, filtration, hydrogenation, extraction liquid/liquid, decantation and/or passage of the used lubricant over an adsorbent material, preferably as detailed below.
- the regenerated lubricating oil used according to the invention is obtained by subjecting a used lubricating composition to at least one dehydration step.
- This dehydration step eliminates any water present in the used lubricant.
- the regenerated lubricating oil used according to the invention thus comprises a water content less than or equal to 10% by mass, in particular less than or equal to 5% by mass, in particular less than or equal to 2% by mass and more particularly less than or equal to 1% by weight, relative to the total mass of said regenerated lubricating oil.
- This dehydration can be carried out by any method known to those skilled in the art, for example by distillation, evaporation, decantation, heating or passing a flow of hot air through the used lubricating composition.
- the dehydration step can be carried out at a temperature between 50°C and 250°C, preferably between 100°C and 200°C. In particular, it can be operated at a pressure of between 50,000 and 150,000 Pa, preferably at atmospheric pressure.
- the regenerated lubricating oil used according to the invention is obtained by subjecting a used lubricating composition to at least one prior filtration step.
- This filtration can be implemented by any method known to those skilled in the art.
- This filtration step may or may not be a particle filtration step. It can for example be implemented by diatomaceous earth type systems.
- the regenerated lubricating oil used according to the invention is obtained by subjecting a used lubricating composition to at least one distillation step, preferably which follows a prior dehydration step. Said distillation step(s) can be carried out by any technique known to those skilled in the art. This may for example be atmospheric distillation or even distillation under reduced pressure.
- the distillations can for example be carried out at a temperature between 100°C and 500°C, preferably between 200°C and 400°C, more preferably between 300°C and 380°C. In particular, they can be operated at a pressure of between 25 and 2000 Pa, preferably between 50 and 1000 Pa, more particularly between 50 and 250 Pa.
- the regenerated lubricating oil used according to the invention is obtained by subjecting a used lubricating composition to at least one prior step of passing said used lubricating composition over an adsorbent material.
- the adsorbent material advantageously makes it possible to selectively adsorb aromatic compounds, in particular PAHs.
- an adsorbent material preferably over activated carbon
- PHAs polycyclic aromatic hydrocarbons
- benzo[b]fluoranthene benzo[j]fluoranthene
- benzo[k ]fluoranthene benzo[e]pyrene
- benzo[a]pyrene benzo[a]pyrene
- dibenz[a,h]anthracene and/or benz[a]anthracene
- bypassage of the used lubricating composition over an adsorbent material is meant the flow of the used lubricating composition onto the adsorbent support.
- the absorbent materials can be, for example, activated carbon, zeolites, clays or functionalized porous compounds. Preferably, it is activated carbon.
- the regenerated lubricating oil used in the process of the invention can be obtained from the treatment of a used lubricating composition according to the process described in document WO 2018/109208.
- the quantity of activated carbon used is preferably between 0.5 and 60 g of activated carbon per liter of used lubricating composition, preferably between 0.5 and 50 g/L, preferably 1 to 50 g/L, preferably between 1 and 30 g/L, for example between 5 and 60 g/L, preferably between 5 and 50 g/L.
- the flow rate of the used lubricating composition can be between lm 3 /h and 15 m 3 /h, for example between 5 and 10 m 3 /h.
- the activated carbon is characterized by a density of between 200 and 500 kg/m 3 , for example measured according to the ASTDM D2854 standard.
- the activated carbon is a coal coal, preferably comprising from 70 to 95%, advantageously from 80 to 90% by weight of carbon.
- the step of passing the used lubricating composition onto an adsorbent support, preferably onto activated carbon, is advantageously preceded by the following preliminary steps:
- the regenerated lubricating oil used according to the invention can be obtained by subjecting a used lubricating composition to at least one prior stage of hydrogenation (or hydrotreatment), preferably which follows a prior stage of dehydration and/or of distillation.
- Said hydrogenation step(s) can be implemented by any technique known to those skilled in the art and consist, in general, of treating the lubricating oil with hydrogen generally in the presence of a catalyst. hydrotreatment.
- Such a catalyst may contain, for example, at least one oxide or sulfide of at least one Group VI metal and/or at least one Group VIII metal, such as molybdenum, tungsten, nickel or cobalt, and a support, for example alumina, silica-alumina or a zeolite.
- the regenerated lubricating oil used according to the invention can be obtained by subjecting a used lubricating composition to at least one prior step of liquid/liquid extraction using a solvent, preferably which follows a prior step of dehydration and/or or distillation.
- a solvent preferably which follows a prior step of dehydration and/or or distillation.
- liquid/liquid extraction using a solvent advantageously makes it possible to lighten a dark-colored used oil, to eliminate at least in part the bad odor or aromatic compounds, in particular PAHs.
- Said extraction step(s) can be implemented by any technique known to those skilled in the art. Extraction is generally carried out in a mixer-settler or in an extraction column, using a suitable extraction solvent.
- the regenerated lubricating oil used according to the invention can be obtained by subjecting a used lubricating composition to at least one prior decantation step.
- Said decantation step(s) can be implemented by any technique known to those skilled in the art.
- a re-refined lubricating oil used according to the invention is distinguished from a used lubricating oil, in particular due to the reduced content of certain undesirable contaminating elements, for example water, fuel, metallic elements or even certain heteroatoms.
- a regenerated lubricating oil used according to the invention is distinguished, due to its formation from a used lubricant, from a virgin or new base oil, oil directly from petroleum refining, or still native base oils, for example of natural origin, both in terms of its composition and its physicochemical properties.
- a regenerated lubricating oil used according to the invention is in particular characterized by a silicon content of between 0 ppm and 300 ppm, in particular between 1 and 300 ppm.
- a regenerated lubricating oil used according to the invention is in particular characterized by a phosphorus content less than or equal to 100 ppm, in particular between 0 ppm and 100 ppm, for example 0 ppm.
- a regenerated lubricating oil used according to the invention can also be characterized by its content of one or more other elements chosen from chlorine, oxygen and nitrogen. It can for example have a chlorine content of between 0 ppm and 50 ppm, for example 0 ppm.
- the content of these elements can be evaluated by any method known to those skilled in the art, for example by X-ray fluorescence (XRF), or by Infrared or Ultraviolet spectroscopy.
- the re-refined lubricating oils used according to the invention have characteristics, in particular in terms of content of saturated compounds, sulfur content and viscosity index, satisfying the criteria defined by the API classification for oils of groups I, II, III, IV and/or V, in particular for oils of groups I, II, III and/or IV.
- the said re-refined lubricating oil(s) used according to the invention are chosen from re-refined oils whose characteristics, in particular in terms of content of saturated compounds, sulfur content and viscosity index, meet the criteria defined by the API classification for Group I oils or Group II oils.
- the re-refined lubricating oils used according to the invention in particular whose characteristics are equivalent to those defined by the API classification for group I or group II base oils, have a kinematic viscosity measured at 100°C according to ASTM D445, between 4.0 and 12 mm 2 . s 1 .
- the re-refined lubricating oil used according to the invention has a kinematic viscosity measured at 100°C according to the ASTM D445 standard, greater than or equal to 4.3 mm 2 . s 1 , in particular between 4.4 and 10 mm 2 . s 1 and more particularly between 4.5 and 6 mm 2 . s -1 .
- a re-refined lubricating oil used according to the invention in particular whose characteristics are equivalent to those defined by the API classification for group I or group II base oils, has a higher viscosity index or equal to 110.
- the viscosity index of the lubricating oil at least partly re-refined can be more particularly between 110 and 130, in particular between 112 and 125 and more particularly between 112 and 122.
- the viscosity index can in particular be determined according to standard NF ISO 2909.
- a regenerated lubricating oil used according to the invention in particular whose characteristics are equivalent to those defined by the API classification for group I or group II base oils, has a sulfur content of between 0 .01% and 0.2% by mass, relative to the total mass of said regenerated lubricating oil.
- a regenerated lubricating oil used according to the invention in particular whose characteristics are equivalent to those defined by the API classification for group I or group II base oils, has a content of compound(s) aromatic(s), greater than or equal to 0.5% by weight, in particular greater than or equal to 1% by weight, relative to the total mass of said regenerated lubricating oil.
- the content of aromatic compound(s) in the regenerated lubricating oil may in particular be between 1% and 25% by weight, in particular between 2.5% and 20% by weight, relative to the total mass of said oil. regenerated lubricant.
- contents of these different elements can be determined using any method known to those skilled in the art, for example by X-ray fluorescence (RFX) or by Infrared or Ultraviolet spectroscopy.
- RFX X-ray fluorescence
- Infrared or Ultraviolet spectroscopy RFX-ray fluorescence
- the re-refined lubricating oil used according to the invention has characteristics, in particular in terms of content of saturated compounds, sulfur content and viscosity index, satisfying the criteria defined by the API classification for Group I oils.
- Such a regenerated oil whose characteristics are equivalent to those of Group I base oils, advantageously has a kinematic viscosity measured at 100°C according to the ASTM D445 standard, greater than or equal to 4.4 mm 2 /s, in particular between 4.5 and 10 mm 2 /s and more particularly between 4.5 and 6 mm 2 /s.
- Viscosity index greater than or equal to 110, in particular between 110 and 130, in particular between 112 and 125 and more particularly between 112 and 122.
- the viscosity index can in particular be determined according to standard NF ISO 2909.
- a regenerated lubricating oil used according to the invention has a sulfur content greater than 0.03% by weight, in particular between 0.05 and 0.20% by weight.
- a regenerated lubricating oil used according to the invention has a content of aromatic compound(s), greater than or equal to 5% by weight, in particular between 5% and 15%, in particular between 7% and 20%, relative to the total mass of said regenerated lubricating oil.
- the re-refined lubricating oil used according to the invention has characteristics, in particular in terms of content of saturated compounds, sulfur content and viscosity index, satisfying the defined criteria by the API classification for group II oils.
- Such a regenerated oil whose characteristics are equivalent to those of group II base oils, advantageously has a kinematic viscosity measured at 100°C according to the ASTM D445 standard, greater than or equal to 4.0 mm 2 /s, in particular between 4.2 and 10 mm 2 /s, more particularly between 4.3 and 6 mm 2 /s.
- Viscosity index greater than or equal to 110, in particular between 110 and 130, in particular between 112 and 125 and more particularly between 115 and 120.
- the viscosity index can in particular be determined according to standard NF ISO 2909.
- a regenerated lubricating oil used according to the invention has a sulfur content less than or equal to 0.03% by mass, in particular less than or equal to 0.02% by mass.
- a regenerated lubricating oil used according to the invention has a content of aromatic compound(s), less than or equal to 10% by weight, in particular less than or equal to 9% by weight, and more particularly between 1 and 9% by mass, relative to the total mass of said regenerated lubricating oil.
- the re-refined lubricating oils used according to the invention in particular whose characteristics are equivalent to those defined by the API classification for group I or group II base oils, advantageously present, compared to virgin base oils of equivalent group according to API classification, reduced volatility.
- the volatility properties can be more particularly evaluated by determining the Noack volatility according to the CEC L-40-93 standard.
- a regenerated lubricating oil used according to the invention has a Noack volatility less than or equal to 15%, in particular less than or equal to 14%. More preferably, a regenerated lubricating oil used according to the invention can have a Noack volatility strictly less than 12%, in particular between 7% and 11%.
- the re-refined base oils used according to the invention advantageously have lower traction coefficients compared to virgin base oils, and this advantageously over a wide temperature range.
- the traction coefficient can be determined by MTM machine (Mini Traction Machine) sold by PCS instrument. It can be evaluated, as described in the examples, according to the following operating conditions: temperature of 40°C or 100°C, load of 25N, sliding rate SRR (sliding/rolling ratio in English ) of 40% and speed gradient from 2500 to 20 mm/s.
- the traction coefficient of a re-refined base oil whose characteristics are equivalent to those defined by the API classification for Group I or Group II base oils, is thus significantly reduced compared to the traction coefficient of a virgin base oil of equivalent group according to API classification.
- the traction coefficient (COT) of the re-refined lubricating oils used according to the invention is lowered by at least 7%, in particular by at least 10%, advantageously by at least 15%, in particular by at least 20%, or even by at least 25%, compared to the traction coefficient of a Virgin base oil of equivalent group according to API classification.
- a re-refined base oil used according to the invention whose characteristics are equivalent to those defined by the API classification for group I base oils, advantageously has a lower traction coefficient than that of a group I virgin base oil.
- the COT traction coefficient of a re-refined oil, whose characteristics are equivalent to those defined by the API classification for group I base oils, evaluated at a temperature of 40°C is less than or equal to 0.050, preferably less than or equal to 0.048 and more preferably less than or equal to 0.045.
- the COT traction coefficient of a re-refined oil whose characteristics are equivalent to those defined by the API classification for group I base oils, evaluated at a temperature of 100°C, is less than or equal to 0.026, preferably less than or equal to 0.025 and more preferably less than or equal to 0.024.
- a re-refined base oil whose characteristics are equivalent to those defined by the API classification for group II base oils advantageously has a lower traction coefficient than that of a virgin group II base oil. II.
- the COT traction coefficient of a re-refined oil whose characteristics are equivalent to those defined by the API classification for group II base oils, evaluated at a temperature of 40°C, is less than or equal to 0.045, preferably less than or equal to 0.043.
- the COT traction coefficient of a re-refined oil whose characteristics are equivalent to those defined by the API classification for group II base oils, evaluated at a temperature of 100°C, is less than or equal to 0.022, preferably less than or equal to 0.020.
- these good traction coefficient reduction properties are verified over a wide range of lubricant use temperatures, in particular for temperatures ranging from 40°C to 100°C, representative of the temperatures at the level of the traction system. motorization.
- a regenerated lubricating oil used according to the invention has a density less than or equal to 870 kg/m 3 , in particular less than or equal to 860 kg/m 3 .
- the density of the at least partly re-refined lubricating oil can thus be between 830 and 870 kg/m 3 , in particular between 840 and 860 kg/m 3 .
- the density can in particular be determined according to standard NF EN ISO 12185.
- a regenerated lubricating oil used according to the invention has a flash point greater than or equal to 225°C, in particular greater than or equal to 228°C.
- the flash point of the at least partly re-refined lubricating oil can thus be between 225°C and 245°C.
- the flash point can in particular be determined according to standard NF EN ISO 2592.
- a regenerated lubricating oil used according to the invention has a thermal conductivity, measured at 100°C and at atmospheric pressure, greater than or equal to 125 mW/mK, in particular greater than or equal to 128 mW/mK.
- the thermal conductivity of the at least partly re-refined lubricating oil can thus be between 125 and 145 mW/mK, in particular between 128 and 140 mW/mK.
- the thermal conductivity can in particular be determined according to the ASTM D7896-19 standard.
- Said re-refined lubricating oil(s) may be used as the sole base oil(s) of the lubricating composition, or be formulated in combination with one or more distinct base oils, in particular one or more oils. new basics.
- These new base oils in particular chosen from base oils conventionally used in the field of lubricants, such as mineral, synthetic or natural, animal or vegetable oils or their mixtures.
- these base oils are oils of mineral or synthetic origin belonging to groups I to V according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) and presented in table 1 above, or their mixtures.
- a lubricating composition implemented according to the invention according to the invention can thus comprise a mixture of one or more lubricating oils at least partly re-refined and one or more new base oils, for example of at least mineral oil.
- a lubricating composition according to the invention comprises less than 50% by weight of new base oil(s), distinct from re-refined lubricating oils.
- a lubricating composition according to the invention is formed mainly from said re-refined lubricating oil(s).
- said re-refined lubricating oil(s) may represent more than 70% by weight of the total mass of the lubricating composition, in particular more than 80% by weight, in particular more than 90% by weight and more particularly between 95% and 100%. mass, in particular between 95% and 99% by mass, of the total mass of the lubricating composition.
- a lubricating composition according to the invention is completely devoid of base oil distinct from re-refined lubricating oils.
- a lubricating composition according to the invention is formed solely from one or more re-refined lubricating oils.
- said re-refined lubricating oil(s) may represent 100% of the lubricating composition.
- the at least partly re-refined lubricating oil is present in a content not exceeding 99%, or even 95% by weight of the total mass of the base oil of the lubricating composition.
- said re-refined lubricating oil(s) may represent more than 70% by weight of the total mass of the base oil of the lubricating composition, in particular more than 80% by weight, in particular more than 90%. mass and more particularly between 95% and 100% by mass, in particular between 95% and 99% by mass, of the total mass of the base oil of the lubricating composition.
- a lubricating composition according to the invention is formed solely from one or more re-refined lubricating oils.
- said re-refined lubricating oil(s) may represent 100% of the base oil of the lubricating composition.
- said re-refined lubricating oil(s) may represent more than 70% by weight of the total mass of the base oil of the lubricating composition and less than 99%, or even 95% by weight of the total mass of the base oil of the lubricating composition.
- a lubricating composition used according to the invention may further comprise all types of additives adapted to the intended use of the lubricant, as detailed in the rest of the text, for example for use in vehicle engine systems. light or heavy goods vehicles, or even marine vehicles, in combustion, electric or hybrid engine systems.
- additives may be chosen in particular from friction modifier additives, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant additives. (PPD), dispersants, anti-foaming agents, thickeners, corrosion inhibitors, copper passivating agents, and mixtures thereof.
- a lubricating composition according to the invention comprises one or more additives chosen from viscosity index improvers, pour point depressant additives, anti-wear additives, antioxidants and mixtures thereof.
- additives can be added to said regenerated base oil(s) used according to the invention or to the mixture of said regenerated base oil(s) and at least one new base oil, in an appropriate quantity, determined by the skilled person. It is understood that the nature and quantity of the additives used are chosen in such a way that the advantageous “Energy efficiency” properties of the composition based on said re-refined lubricating oil(s) are not or substantially not altered by the planned addition.
- a lubricating composition used according to the invention may comprise between 0.01 and 20% by weight, in particular between 0.05 and 10% by weight of additives, in particular as described below, relative to the total weight of the composition.
- said re-refined lubricating oil(s) may represent more than 70% by weight of the total mass of the base oil of the composition.
- lubricant in particular more than 80% by mass, in particular more than 90% by mass and more particularly between 95% and 100% by mass, in particular between 95% and 99% by mass, of the total mass of the base oil of the lubricating composition and the lubricating composition may further comprise between 0.01 and 20% by weight, in particular between 0.05 and 10% by weight of additives, in particular as described below, relative to the total weight of the composition.
- Said lubricating composition can then comprise from 99.99 to 80% by weight of base oil(s), in particular from 99.05 to 90% by weight of base oil(s) relative to the total weight of the composition.
- a lubricating composition according to the invention is formed solely from one or more re-refined lubricating oils.
- said re-refined lubricating oil(s) may represent 100% of the base oil of the lubricating composition.
- Said lubricating composition can then comprise from 99.99 to 80% by weight of re-refined lubricating oil(s), in particular from 99.05 to 90% by weight of re-refined lubricating oil(s) as a single (s) base oil(s) relative to the total weight of the composition.
- a lubricating composition used according to the invention may comprise at least one friction modifier additive.
- Friction modifier additives make it possible to limit friction by forming monolayers adsorbed on the surfaces of metals in contact with them. They can be chosen from compounds providing metallic elements and compounds free of ash. Among the compounds providing metallic elements, we can cite transition metal complexes such as Mo, Sb. Sn, Fe, Cu, Zn whose ligands can be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus atoms.
- the ash-free friction modifier additives are generally of organic origin and can be chosen from esters of fatty acids and polyols, distinct from the monoester required according to the invention, alkoxylated amines, alkoxylated fatty amines, fatty epoxides. , fatty borate epoxides, fatty amines or glycerol esters of fatty acids.
- the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
- compounds based on molybdenum can be chosen among molybdenum dithiocarbamates (Mo-DTC), molybdenum dithiophosphates (Mo-DTP), and mixtures thereof.
- a lubricating composition according to the invention may comprise from 0.01 to 5% by weight, preferably from 0.01 to 5% by weight, more particularly from 0.1 to 2% by weight or even more particularly from 0. 1 to 1.5% by weight, relative to the total weight of the lubricating composition, of friction modifier additives.
- a lubricating composition according to the invention comprises at least one anti-wear additive, an extreme pressure additive or mixtures thereof.
- Anti-wear additives and extreme pressure additives are dedicated to protecting friction surfaces by forming a protective film adsorbed on these surfaces.
- anti-wear additives are particularly suitable for the lubricating compositions according to the invention.
- anti-wear additives chosen from polysulphide additives, sulfur-containing olefin additives or even phospho-sulphur-containing additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically dialkyldithiophosphates. zinc or ZnDTP.
- the preferred compounds are of formula Zn((SP(S)(OR)(OR'))2, in which R and R', identical or different, independently represent an alkyl group, preferably comprising from 1 to 18 carbon atoms.
- a lubricating composition according to the invention may comprise from 0.01 to 6% by weight, preferably from 0.05 to 4% by weight, more preferably from 0.1 to 2% by weight, relative to the total weight of the composition, anti-wear additives and extreme pressure additives.
- a lubricating composition according to the invention may comprise at least one antioxidant additive.
- the antioxidant additive makes it possible to delay the degradation of the lubricating composition in service. This degradation can in particular result in the formation of deposits, the presence of sludge or an increase in the viscosity of the lubricating composition. They act in particular as free radical inhibitors or hydroperoxide destroyers.
- 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 C1-C12 alkyl group, 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 C1-C10 alkyl group, preferably a CI-C6 alkyl group. , preferably a C4 alkyl group, preferably the tert-butyl group.
- Amino compounds are another class of antioxidant additives that can be used, possibly in combination with phenolic antioxidant additives.
- amino compounds are aromatic amines, for example aromatic amines of formula NR 5 R 6 R 7 in which R 5 represents an aliphatic group or an aromatic group, optionally substituted, R 6 represents an aromatic group, optionally substituted, R 7 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 8 S(O) Z R 9 in which R 8 represents an alkylene group or an alkenylene group, R 9 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2.
- Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
- a lubricating composition according to the invention may comprise from 0.1 to 2% by weight, relative to the total weight of the composition, of at least one antioxidant additive.
- a lubricating composition according to the invention may also comprise at least one detergent 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 according to the invention are generally known to those skilled in the art.
- Additives Detergents can be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
- the associated cation may be a metal 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.
- These metal salts generally include the metal in stoichiometric quantity or in excess, therefore in quantity greater than the stoichiometric quantity.
- a lubricating composition according to the invention may comprise from 0.5 to 8%, preferably from 0.5 to 4% by weight, relative to the total weight of the lubricating composition, of detergent additive.
- a lubricating composition according to the invention can also comprise at least one pour point depressant additive (also called “PPD” agent for “Pour Point Depressant” in English).
- pour point depressant additives By slowing down the formation of paraffin crystals, pour point depressant additives generally improve the cold behavior of the lubricating composition according to the invention.
- pour point reducing agents include polyalkyl methacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes and alkylated polystyrenes.
- a lubricating composition according to the invention may comprise from 0.1% to 2%, preferably from 0.2% to 1% by weight of pour point depressant additive(s), relative to the total weight. of the composition.
- a lubricating composition according to the invention may also comprise at least one dispersing agent.
- Such dispersing agents ensure the maintenance in suspension and the evacuation of insoluble solid contaminants constituted by the secondary oxidation products which form when the lubricating composition is in use. They can be chosen from among Mannich bases, succinimides and their derivatives, such as polyisobutylene succinic anhydride derivatives.
- a lubricating composition according to the invention may comprise from 0.2 to 10% by weight of dispersing agent(s), relative to the total weight of the composition.
- a lubricating composition according to the invention may also comprise at least one additive improving the viscosity index (VI).
- VI viscosity index
- Viscosity index improvers in particular viscosity index improving polymers, make it possible to guarantee good cold performance and minimum viscosity at high temperatures.
- polymers improving the viscosity index mention may be made of polymer esters, homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene, homopolymers or copolymers of olefin, such as such as ethylene or propylene, poly acrylates and polymethacrylates (PMA), preferably olefin homopolymers or copolymers, such as ethylene or propylene.
- polymer esters homopolymers or copolymers, hydrogenated or non-hydrogenated, of styrene, butadiene and isoprene
- olefin such as such as ethylene or propylene
- PMA polymethacrylates
- a lubricating composition according to the invention may comprise from 1 to 15% by weight of additive(s) improving the viscosity index, preferably from 5% to 10% by weight, relative to the total weight of the lubricating composition. .
- a lubricating composition may also comprise at least one anti-foam additive, for example chosen from polar polymers such as polymethylsiloxanes or poly acrylates.
- a lubricating composition according to the invention may comprise from 0.01 to 3% by weight of anti-foam additive(s), relative to the total weight of the lubricating composition.
- It may also comprise at least one anti-corrosion agent or copper passivating agent, for example compounds such as polyisobutenes succinic anhydrides, thiadiazole sulfonates or mercaptobenzothiazoles. They are typically present in a lubricating composition according to the invention at contents of between 0.01% and 1% by weight, relative to the total weight of the composition.
- at least one anti-corrosion agent or copper passivating agent for example compounds such as polyisobutenes succinic anhydrides, thiadiazole sulfonates or mercaptobenzothiazoles.
- a lubricating composition according to the invention may further comprise one or more base oils distinct from the at least partly re-refined lubricating oil and/or one or more additives, in particular chosen from friction modifier additives, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersants, anti-foaming agents, thickeners, corrosion inhibitors, copper passivators, and mixtures thereof.
- one or more base oils distinct from the at least partly re-refined lubricating oil and/or one or more additives, in particular chosen from friction modifier additives, anti-wear additives, extreme pressure additives, detergents, antioxidants, viscosity index (VI) improvers, pour point depressant (PPD) additives, dispersants, anti-foaming agents, thickeners, corrosion inhibitors, copper passivators, and mixtures thereof.
- oils preferably whose characteristics are equivalent to those defined by the API classification for group I or group II base oils, are used according to the invention to improve efficiency. energy of lubricants intended for the lubrication of various motor systems.
- motor system within the meaning of the present invention, we mean a system comprising all the mechanical parts necessary for the targeted mobile or stationary application and including by means of a motor. It may be a combustion, gas, in particular hydrogen, ammonia, electric or hybrid engine system, depending on the nature of the engine(s) included in the engine system: combustion engine, gas, in particular hydrogen, ammonia and/or electric.
- a “stationary” motorization system within the meaning of the invention is a motorization system including a stationary motor. It can find, for example, applications in electrical energy production devices. It may in particular be a gas engine system, in particular a stationary gas engine.
- a “mobile” motorization system is more particularly a motorization system implemented in vehicles, including light vehicles, heavy goods vehicles, so-called “off-road” mobile machines, or even marine vehicles.
- a mobile power system can thus be a propulsion system for a vehicle, in particular a vehicle with a combustion engine, an electric or hybrid vehicle.
- propulsion system within the meaning of the present invention is meant a system comprising the mechanical parts necessary for the propulsion of a vehicle.
- the propulsion system more particularly includes a motor, for example an internal combustion engine or an electric motor comprising the rotor-stator assembly of the power electronics, a transmission and possibly a battery.
- a motor for example an internal combustion engine or an electric motor comprising the rotor-stator assembly of the power electronics, a transmission and possibly a battery.
- re-refined oils advantageously makes it possible to act effectively on the energy consumption of the engine via its impact on the friction forces generated between the different organs of the engine system, for example of the propulsion system. of the vehicle.
- a lubricating composition can thus be used for the lubrication of gears and transmission members, particularly at the level of the reduction gear, gearbox and/or axles, of the engine.
- the re-refined oils according to the invention can be used to reduce friction in the propulsion systems of light or heavy vehicles, in particular vehicles with combustion, electric or hybrid engines.
- the re-refined oil according to the invention may consist of at least one of the re-refined oils offered by the following suppliers: PROLUMINAS (BR), OSILUB (FR) , TAM HOUSE (IN), SAHARA (IN), ENVIROIL (PT), CATOR (ES), SETERGO (ES), MASAFEE (EG), SOUTHERN OIL (AU), CLENAWAY (AU), PETROLUBE (BR), TERRAPURE ( CA), FINAS (CN), BROAD (CN), JUNGU (CN), LWART (EG), TECOIL (FI), OSILUB+ (FR), AVISTA (DE), PURAGLOBE (DE), LPC HELLAS (GR), ITELYUM (IT), FFS REFINERS (ZA), TAYRAS (TR), REGENIII (USA), SAFETY KLEEN (USA), DAYA LUBRICANT (IN), LUBRICON (IN), IFP PETRO (IN), PLUS LUBRICANT (IN),
- PROLUMINAS BR
- kinematic viscosity of oils is measured at 100°C (KV100) using a viscometer, according to standard NF EN ISO 3104. This standard is technically equivalent to standard ASTM D445. The results are expressed in mm 2 /s (equivalent to the centistoke, denoted cSt).
- the viscosity index is a dimensionless ratio, which gives an indication of the variation in the viscosity of oils as a function of temperature. This is calculated from kinematic viscosity values at 40°C and 100°C, according to standard NF ISO 2909. The higher this index, the less the viscosity of the oils is influenced by temperature variations.
- the contents of sulfur and aromatic compounds in the oil are determined by infrared or ultraviolet spectroscopy.
- Volatility is used to determine the evaporation loss of oils at high temperatures. It is determined by the NOACK volatility test, carried out according to the CEC L-40-93 standard. During the test, the oil sample is subjected to a constant flow of air, heated to approximately 250°C, for approximately 60 minutes. The result is expressed as a fraction of weight loss, in mass percentage.
- COT coefficient of traction
- the measurement conditions were 25 N (920 MPa) load, a disk speed of 2500 - 20 mm/s for an SRR of 40% and a rated temperature of 40°C and 100°C.
- oils II to 110 The properties of re-refined lubricating oils II to 110, in accordance with the invention and available commercially, were evaluated. These oils are obtained from used base oils and having undergone at least one step of dehydration, distillation, filtration, hydrogenation, liquid/liquid extraction, decantation and/or passage of the used lubricant through an adsorbent material, in particular at least one step of dehydration, distillation, liquid/liquid extraction and/or hydrogenation.
- oils are Group I or II base oils according to the API classification, available commercially.
- a lower traction coefficient makes it possible to reduce friction losses in mechanical contacts working in full film and thus reduce the fuel used.
- the traction coefficient turns out to be lower over a wide temperature range (from 40 to 100°C), corresponding to the temperatures at the engine crankcase.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2213243A FR3143038B1 (fr) | 2022-12-13 | 2022-12-13 | Huiles lubrifiantes re-raffinées pour améliorer les propriétés d’économie d’énergie des systèmes de motorisation |
| PCT/EP2023/085517 WO2024126554A1 (fr) | 2022-12-13 | 2023-12-13 | Huiles lubrifiantes re-raffinées pour améliorer les propriétés d'économie d'énergie des systèmes de motorisation |
Publications (1)
| Publication Number | Publication Date |
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| EP4634341A1 true EP4634341A1 (fr) | 2025-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23822034.7A Pending EP4634341A1 (fr) | 2022-12-13 | 2023-12-13 | Huiles lubrifiantes re-raffinées pour améliorer les propriétés d'économie d'énergie des systèmes de motorisation |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4634341A1 (fr) |
| FR (1) | FR3143038B1 (fr) |
| WO (1) | WO2024126554A1 (fr) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8366912B1 (en) * | 2005-03-08 | 2013-02-05 | Ari Technologies, Llc | Method for producing base lubricating oil from waste oil |
| FR3060406B1 (fr) | 2016-12-16 | 2021-02-12 | Total Marketing Services | Procede de traitement des huiles usagees |
-
2022
- 2022-12-13 FR FR2213243A patent/FR3143038B1/fr active Active
-
2023
- 2023-12-13 EP EP23822034.7A patent/EP4634341A1/fr active Pending
- 2023-12-13 WO PCT/EP2023/085517 patent/WO2024126554A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3143038A1 (fr) | 2024-06-14 |
| FR3143038B1 (fr) | 2026-07-17 |
| WO2024126554A1 (fr) | 2024-06-20 |
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