WO2011095549A2 - Composition d'huile de graissage - Google Patents

Composition d'huile de graissage Download PDF

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Publication number
WO2011095549A2
WO2011095549A2 PCT/EP2011/051571 EP2011051571W WO2011095549A2 WO 2011095549 A2 WO2011095549 A2 WO 2011095549A2 EP 2011051571 W EP2011051571 W EP 2011051571W WO 2011095549 A2 WO2011095549 A2 WO 2011095549A2
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Prior art keywords
lubricating oil
oil composition
boron
mass
composition according
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PCT/EP2011/051571
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English (en)
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WO2011095549A3 (fr
Inventor
Kiyoshi Hanyuda
Eiji Kinoshita
Tetsuo Wakizono
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Shell Internationale Research Maatschappij B.V.
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Publication of WO2011095549A2 publication Critical patent/WO2011095549A2/fr
Publication of WO2011095549A3 publication Critical patent/WO2011095549A3/fr

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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
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/102—Aliphatic fractions
    • C10M2203/1025—Aliphatic fractions 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/17—Fisher Tropsch reaction products
    • C10M2205/173—Fisher Tropsch reaction products 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
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
    • C10M2215/065—Phenyl-Naphthyl amines
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
    • 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
    • C10N2020/017—Specific gravity or density
    • 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
    • C10N2020/04—Molecular weight; Molecular weight distribution
    • 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
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
    • 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
    • C10N2030/72—Extended drain
    • 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
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines
    • C10N2040/253—Small diesel 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines

Definitions

  • This invention relates to a lubricating oil
  • composition suitable for use as a long-life engine oil which very significantly improves the oxidative stability of the lubricating oil in a gasoline engine or diesel engine .
  • Japanese Laid-open Patent 2006-176672 has disclosed the blending of an amine-based anti-oxidant in boron-containing or boron-free succinimides or succinic mono-imides, but a specific ratio to be used as regards the use of boron-containing succinimides and amine- based anti-oxidants has not been disclosed, and it has not proven satisfactory as regards improving oxidative
  • dispersants in particular, boron-modified succinimides, with an aromatic amine compound.
  • a lubricating oil composition comprising a base oil and which contains in the base oil a boron-modified polybutenyl succinic mono- and/or di-imide compound and an aromatic amine compound, and which gives an oxidation induction time according to PDSC (pressure differential scanning
  • base oils in the lubricating oil composition of the present invention it is possible in particular to use, singly or as mixtures, base oils which belong to Group II and Group III of the API (American Petroleum Institute) base oil categories as shown in Table 1. These base oils or base oil mixtures are incorporated in the lubricating oil composition in the amount of not less than 50% by mass. It is particularly preferred if, taking the total base oil as 100%, the amount of Group II and Group III base oil is at least 90% by mass.
  • Group II base oils include, for example, paraffinic mineral oils obtained by appropriate use of a suitable combination of refining processes such as hydrocracking and dewaxing in respect of lubricating oil fractions obtained by atmospheric distillation of crude oil.
  • Group II base oils refined by hydrorefining methods such as the Gulf Company method have a total sulphur content of less than 10 ppm and an aromatic content of not more than 5% and so can be used for this invention.
  • the viscosity of these base oils is not specially limited, but the viscosity index should be in the range of from 80 to less than 120 and preferably in the range of from 100 to less than 120.
  • the kinematic viscosity at 100°C should preferably be in the range of from 2 to 32 mm 2 /s and more preferably in the range of from 3 to 24 mm 2 /s.
  • the total sulphur content should be less than 300 ppm, preferably less than 50 ppm and more preferably less than 10 ppm.
  • the total nitrogen content should also be less than 10 ppm and preferably less than 1 ppm.
  • Group III base oils include, for example, paraffinic mineral oils manufactured by a high degree of hydrorefining in respect of lubricating oil fractions obtained by atmospheric distillation of crude oil, base oils refined by Isodewaxing which dewaxes and substitutes with isoparaffins GTL (gas-to-liquid) waxes synthesised by the Fischer- Tropsch process in the technology of making liquid fuels from natural gas, and waxes produced by dewaxing processes, and base oils refined by the Mobil wax isomerisation process. These are also suitable for use in this
  • the viscosity of these base oils is not specially limited, but the viscosity index should be not less than 120, and preferably 120 to 150.
  • the kinematic viscosity at 100°C should preferably be in the range of from 2 to 32 mm 2 /s and more preferably in the range of from 3 to 24 mm 2 /s.
  • the total sulphur content should be less than 100 ppm and preferably less than 30 ppm.
  • the total nitrogen content should also be less than 10 ppm and preferably less than 1 ppm.
  • oils with an aniline point in the range of from 80 to 150°C and
  • Table 1 shows typical examples of the properties of the various base oils in the API classification.
  • polybutenyl succinic mono- or di-imides used in this invention are shown by Formulae (1) and (2) below.
  • succinimides being monotype succinimides wherein anhydrous succinic acid has been added to one end of polyamines, or bis-type succinimides wherein anhydrous succinic acid has been added to both ends of polyamines.
  • the succinimides are modified with boron during imidification .
  • R 1 , R 2 and R 3 each denote independently straight-chain or branched alkyl groups or alkenyl groups having from 40 to 400 carbon atoms, but preferably having from 60 to 350 carbon atoms, a is an integer in the range of from 1 to 10, but preferably in the range of from 2 to 5, and b is an integer in the range of from 1 to 10.
  • the weight-average molecular weight of the alkyl groups or alkenyl groups of the boron-modified succinimide- based compound is in the range of from 500 to 5600, but preferably in the range of from 800 to 4900. For this reason it is preferable that the number of carbon atoms in the alkyl groups or alkenyl groups in R 1 , R 2 and R 3 in Formulae (1) and (2) above be selected so as to be within the aforementioned weight-average molecular weights.
  • succinimide-based compounds is not specially limited, and for example they may be obtained by reacting with
  • polyamines an alkyl succinic acid or alkenyl succinic acid obtained by reacting a compound containing alkyl groups or alkenyl groups having from 40 to 400 carbon atoms with anhydrous maleic acid at 100 to 200°C.
  • Typical examples for the polyamine would be diethylene triamine, triethylene tetramine, tetraethylene pentamine or pentaethylene hexamine .
  • a boron-modified succinimide ashless dispersant it is possible to obtain it by causing a boron compound such as a boric acid, a borate or a borate ester to act on the succinimides shown in Formulae (1) and (2) .
  • boric acid mention may be made of orthoboric acid, metaboric acid and tetraboric acid.
  • a boron-modified succinimide with a boron/nitrogen mass ratio (B/N) in the range of from 0.25 to 4 is
  • the proportion of boron-modified succinimide added is preferably in the range of from 0.5 to 15% by mass based on the total amount of the composition, but more preferably in the range of from 1 to 10% by mass and even more preferably in the range of from 2 to 6% by mass.
  • a boron-modified succinimide is effective as a constituent other than an anti-oxidant in preventing oxidation of a lubricating oil, but the succinimide is an ashless type of detergent-dispersant , and it is well known that, apart from the detergency effect it also combines this, by way of an oxidation inhibiting function, with having the effect of rendering harmless, via solubilisation, sludge precursors which are a kind of oxidation.
  • the boron compounds as in Japanese Laid-open Patent H10-087727 (1998), Japanese Laid-open Patent 2005-306913 and
  • boron wettable substances display oxidation inhibiting performance, detergency and extreme-pressure performance at high temperatures.
  • the compounds in this invention are not boron wettables, but it can be assumed that basically they have oxidation
  • Ph denotes a phenyl compound
  • R denotes a hydrogen atom or a straight-chain or branched alkyl group having from 1 to 15 carbon atoms
  • R' denotes any of a phenyl group having an alkyl group, a naphthyl group having an alkyl group, or any of a straight- chain or branched alkyl group, a cycloalkyl group or an alkyl cycloalkyl group having from 1 to 8 carbon atoms.
  • aromatic amine compounds At least one kind selected from, in particular, alkylated diphenylamines , and alkylated phenyl-a-naphthylamines is preferred .
  • R 4 and R 5 denote hydrogen atoms, or straight-chain or branched alkyl groups having from 1 to 16 carbon atoms .
  • R 4 and R 5 in the aforementioned formula are preferably hydrogen atoms, or straight-chain or branched alkyl groups having from 3 to 9 carbon atoms, and it is particularly preferred if they are hydrogen atoms or straight-chain or branched alkyl groups having from 4 to 8 carbon atoms. If the number of alkyl group carbons exceeds 16, the solubility in oil may be reduced, which is not desirable. Also, R 4 and R 5 may be the same or different.
  • diphenylamines mention may be made of diphenylamine , butyldiphenylamine , octyldiphenylamine ,
  • dioctyldiphenylamine The alkylated diphenylamines may be used as one kind alone or in combinations of two or more kinds. They may also be combined with other aromatic amine compounds .
  • the alkylated diphenylamines is present in the alkylated diphenylamines.
  • composition in an amount in the range of from 0.001 to 5% by mass, but preferably in the range of from 0.001 to 3% by mass, and more preferably in the range of from 0.001 to 2.5% by mass. If it exceeds 5% by mass the effect will be saturated and it will be economically disadvantageous, which is not desirable.
  • the alkylated phenyl-a-naphthylamines are shown by Formula ( 5 ) .
  • R denotes a hydrogen atom or a straight-chain or branched alkyl group having from 1 to 16 carbon atoms, but preferably a straight-chain or branched alkyl group having from 4 to 8 carbon atoms.
  • R 6 mention may be made of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, 2- methylbutyl, n-hexyl, isohexyl, 3-methylpentyl , ethylbutyl, n-heptyl, 2-methylhexyl , n-octyl, iso-octyl, tert-octyl, 2- ethylhexyl, 3-methylheptyl , n-nonyl, isononyl, 1- methyloctyl, ethylheptyl, n-decyl, 1-methylnonyl , n- undecyl, 1 , 1-dimethylnonyl
  • alkylated phenyl-a-naphthylamines mention may be made of n-pentylated phenyl-a-naphthylamine , 2-methylbutylated phenyl-a- naphthylamine , 2-ethylhexylated phenyl-a-naphthylamine, n- octylated phenyl-a-naphthylamine, n-nonylated phenyl-a- naphthylamine, 1-methyloctylated phenyl-a-naphthylamine, n- undecylated phenyl-a-naphthylamine, and n-dodecylated phenyl-a-naphthylamine .
  • the alkylated phenyl-a-naphthylamines may be used as one kind alone or in combinations of two or more kinds. They may also be combined with other types of aromatic amine compounds .
  • the alkylated phenyl-a-naphthylamines is present in the composition in an amount in the range of from 0.001 to 5% by mass, but preferably in the range of from 0.001 to 3% by mass, and more preferably in the range of from 0.001 to 2.5% by mass. If it exceeds 5% by mass the effect will be saturated and it will be economically disadvantageous, which is not desirable.
  • Pressure differential scanning calorimetry is a way of raising the temperature of a test substance and a standard substance at equal rates and of measuring, under pressure, the amount of energy necessary to maintain at zero the temperature difference between the two test specimens which occurs due to generation of heat and absorption of heat by the test substance.
  • a European Community council has specified CEC-L-85-T-99 (Hot Surface
  • Oxidation as the test method for the oxidative stability of lubricating oil.
  • oxidative stability of a lubricating oil can be evaluated by means of a small amount of sample in a short time, and so the inventors carried out various investigations, and as a result of examination of the relationship with performance in practice, they took as the criterion the stipulation of an oxidation induction time in the PDSC test of the ACEA E9-08 standard of not less than 65 minutes, and made the pass mark for an oil under evaluation to be an oxidation induction time in a PDSC test of not less than 65 minutes.
  • the PDSC value is a way of evaluating, in terms of oxidative life, the period (known as the oxidation induction time) till a specified temperature is reached, keeping the specimen at a fixed temperature (210°C) at atmospheric pressure (0.69 MPa) .
  • a longer oxidation induction time shows a better performance in preventing oxidation .
  • the hot-tube test is a test which evaluates the thermal resistance and high-temperature detergency of a lubricating oil, and it examines the degree to which deposits such as carbon occur when the lubricating oil is exposed to high temperatures.
  • the test method is
  • the Noack value is a way of expressing numerically the amount of engine oil consumed in a Noack volatility test (mass %) under JPI-5S-41 (the API-SL criterion is not more than 15%) .
  • the base oil which belongs to the Group III base oils, and which is produced from waxes of a GTL (gas-to- liquid) synthesised by the Fischer-Tropsch process in the technology of producing liquid fuels from natural gas, has little sulphur or nitrogen content which would impinge detrimentally on oxidative stability, so that it has oxidative stability which matches the poly-a-olefin synthetic oils and can be suitably used in this invention.
  • GTL gas-to- liquid
  • compositions of the examples and comparative examples are blended in the proportions shown in Table 4 below (all amounts are mass% unless otherwise specified) and have the properties shown in Tables 4 and 5.
  • succinimide A a boron-modified succinimide B and a succinimide containing no boron, a diphenylamine compound and a phenylnaphthylamine compound, which are the aromatic amine compounds, and a phenol based anti-oxidant
  • a base oil which belonged to Group III of the API base oil categories was prepared by the Fischer-Tropsch process. Using the blends shown in Tables 4 and 5, evaluation of anti-oxidation life was carried out by means of PDSC and evaluation of high-temperature detergency was carried out by means of a hot-tube test.
  • Comparative Example 11 is a composition using a phenolic anti-oxidant in place of the aromatic amine compound.
  • a boron-modified succinimide is used, when there is no aromatic amine compound present, the PDSC value becomes shorter and the hot-tube test score becomes lower, so that it is clear that nothing more than unsatisfactory

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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)
  • Lubricants (AREA)

Abstract

L'invention porte sur une composition d'huile de graissage comprenant une huile de base, qui contient dans l'huile de base un composé monoimide et/ou diimide de l'acide succinique polybuténylique modifié par du bore et un composé amine aromatique et qui a un temps d'induction de l'oxydation selon la PDSC (calorimétrie différentielle à balayage sous pression) supérieur ou égal à 65 minutes et une note d'évaluation supérieure ou égale à 6,0 dans un essai en tube chaud à 290°C. La composition d'huile de graissage est appropriée pour être utilisée comme huile pour moteur longue durée qui améliore nettement des propriétés de protecteur contre l'oxydation des huiles de graissage de moteurs à essence et de moteurs diesels.
PCT/EP2011/051571 2010-02-03 2011-02-03 Composition d'huile de graissage WO2011095549A2 (fr)

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JP2010022520A JP5689239B2 (ja) 2010-02-03 2010-02-03 ガソリンエンジンおよびディーゼルエンジン油
JP2010-022520 2010-02-03

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Cited By (2)

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US10487289B2 (en) 2017-02-21 2019-11-26 Exxonmobil Research And Engineering Company Lubricating oil compositions and methods of use thereof
CN113012763A (zh) * 2021-02-24 2021-06-22 西南石油大学 一种基于四族组分的原油氧化反应动力学模型建立方法

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