CN105733780A - Diesel engine lubricating oil composition - Google Patents

Diesel engine lubricating oil composition Download PDF

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Publication number
CN105733780A
CN105733780A CN201610181883.XA CN201610181883A CN105733780A CN 105733780 A CN105733780 A CN 105733780A CN 201610181883 A CN201610181883 A CN 201610181883A CN 105733780 A CN105733780 A CN 105733780A
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lubricating oil
oil
diesel engine
engine according
improver
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刘彬隆
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Haferd Petroleum Energy (guangdong) Co Ltd
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Haferd Petroleum Energy (guangdong) Co Ltd
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Priority to CN201610181883.XA priority Critical patent/CN105733780A/en
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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
    • C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
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    • 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
    • C10M2203/06—Well-defined aromatic compounds
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    • 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
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    • 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
    • C10M2205/022—Ethene
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    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
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    • C10M2205/026—Butene
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
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    • 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
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/102—Polyesters
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
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    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/04—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen, halogen, and oxygen
    • C10M2211/042—Alcohols; Ethers; Aldehydes; Ketones
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    • 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
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/086—Imides
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid salts
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
    • C10M2219/089—Overbased salts
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    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • C—CHEMISTRY; METALLURGY
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    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
    • C10M2227/066—Organic compounds derived from inorganic acids or metal salts derived from Mo or W
    • C—CHEMISTRY; METALLURGY
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    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/046—Siloxanes with specific structure containing silicon-oxygen-carbon bonds
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    • 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
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04—Detergent property or dispersant property
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    • 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
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines

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  • Chemical & Material Sciences (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

The invention relates to the technical field of lubricating oil, particularly relates to a diesel engine lubricating oil composition. The composition comprises the following components in percentage by weight: 60-88% of base oil, 2-6% of high-alkalinity detergent, 0.8-3% of antioxidant, 2-12% of oil-soluble polyether (OSP), 1-2% of dispersing agent, 0.05-1% of defoaming agent, 5-13% of viscosity index improver, 0.1-1% of friction improver and 0.2-2% of corrosion inhibitor. Compared with the prior art, the OSP is added into the diesel engine oil and mixed and dissolved in the refined base oil, thereby greatly enhancing the oxidation resistance of the lubricating oil and the compatibility among the additives. The OSP has a synergistic action with the corrosion inhibitor, friction improver and other additives, thereby bringing in excellent corrosion resistance, friction controllability, viscosity controllability and the like for the new formula, and prolonging the service life of the lubricating oil.

Description

A kind of lubricating oil composite for diesel engine
Technical field
The present invention relates to technical field of lubricating oil, particularly to a kind of lubricating oil composition for diesel engine compositions.
Background technology
Diesel engine is as commerial vehicle, engineering machinery vehicle configuration electromotor, constantly update the replacement in recent years, diesel engines at present widely uses direct injection technology, turbocharging technology improves power, adopts delayed injection technology, EGR Technology, piston optimization etc. to reduce engine emission.The requirement that the application of these technology is higher to peace and quiet, the dispersion of matched with diesel engine diesel engine oil, antioxidation, the proposition such as resistance to wear.
It is known that internal engine temperature is significantly high, lubricating oil in use inevitably aoxidizes.For the engine, oxidizing process creates acid, greasy filth and deposit.Acid makes metal parts produce corrosion, wear；Greasy filth and deposit make lubricating oil retrogradation, cause the bonding of piston ring and the blocking of oil circuit, so that engine power declines, oil consumption increases.
Therefore, the high-temperature oxydation problem of engine lubricating oil, it is always up a puzzled difficult problem in the minds of lubricating oil research staff.
Chinese patent CN1026690707B describes the lubricating oil composite for diesel engine that a kind of phosphorus content is low, disclosure satisfy that Diesel engine high-temperature oxidation resistance, but it is poor with hydrocarbon-type oil intermiscibility, and the ability of its wear resistence, detergency and control viscosity build is poor.
Chinese patent CN102939365B also discloses a kind of lubricating oil composite for diesel engine, described lubricant oil composite without metal detergent but still the electromotor kept (piston) spatter property, prevent DPF blocking simultaneously and reduce the abrasion of valve train, but its acid corrosion-resistant performance and pyro-oxidation resistance are all more weak.
In view of this, the lubricant oil composite of a kind of Oxidation Stability with excellence of necessary research and development and corrosion resistance.
Summary of the invention
It is an object of the invention to, the lubricating oil composite for diesel engine of a kind of thermal oxidation stability energy with excellence is provided for the deficiencies in the prior art；It not only has the cleaning dispersibility of excellence, there is splendid corrosion-resistant and abrasion resistance simultaneously, it is ensured that oil product still has suitable viscosity index (VI) under engine high-temperature, thus increasing the service life of lubricating oil, delay the engine oil change cycle, saved cost of transportation.
To achieve these goals, the present invention adopts solution below:
A kind of lubricating oil composite for diesel engine, including the composition of following percentage by weight:
Wherein, described base oil is the II class hydrogenated base oil by API classification；The present invention is for the base oil of the lubricant oil composite of diesel engine, it is possible to select the class ii hydrogenated base oil belonging in API (American Petroleum Institute) basestock classification individually or as mixture application.Conventional II class base oil is had the total sulfur content less than 10ppm by the class ii hydrogenation base oil of the refining gained of hydrofinishing process (such as GulfCompany method) and is not more than the arene content of 5%.Such as, optional II class hydrogenated base oil 500N or 150N.
Described high alkalinity detersive is high-alkali sulfoacid calcium and the compositions of high-alkali calcium sulfenyl phenolate, the two shared percentage by weight respectively 0.5～2.5% and 1.5～3.5%；High-alkali sulfoacid calcium and high-alkali calcium sulfenyl phenolate all contain the surfactant of hydrophilic, oleophylic and polar group, after they are dissolved in oil with micelle state, can make original in oil undissolvable material (i.e. the predecessor of deposit) wrap and be dissolved in micelle center, they further oxidative condensations are stoped to become greasy filth and carbon deposit, thus playing solubilization.Acidic materials that the calcium carbonate particle produced by overbased technology can neutralize disintegration of lubricating oil and produce and the sulfide that fuel produces, play and prevent deep oxidation and sulfonation.Described high alkalinity detersive is general is used for engine oil with other detersives and inhibitor, when the high-temperature operation of turbo-charged diesel, the acid with excellence neutralizes performance and excellent control apical ring band deposition properties, it is possible to removing carbon in time, keeps fabulous engine piston spatter property.
Described antioxidant is at least one of double; two octyl group zinc dithiophosphate, zinc dialkyl dithiophosphate, p-di-iso-octyldiphenylamine and dialkyl diphenylamine.Antioxidant, by absorbing the form of free radical and peroxynitrite decomposition compound, blocks mixture degradation process, thus playing the effect improving Working Life of Lubricating Oil.Wherein, in double; two octyl group zinc dithiophosphates, the percentage composition of Zn is 9.0～10.5%, and it has excellent oxidation corrosion resistance, abrasion resistance and thermal stability.
It should be noted that the antioxygenic property of lubricating oil decides the performance and used life of lubricating oil.The quality of antioxygenic property is together decided on by base oil and additive.Therefore, in lubricating oil, select collocation and the ratio and the consumption thereof that adjust in lubricant oil composite between each component of each component seem extremely important.
The present invention adds oil-soluble polyethers (OSP) in diesel lubrication oil, after miscible with refining base oil, substantially increase the compatibility between antioxygenic property and each additive of lubricating oil, synergism is played with the additive such as corrosion inhibitor, friction improver, bring the performances such as more remarkable corrosion inhibition, friction control, viscosity control for new formula, increase the service life of lubricating oil.Result of study shows: oil-soluble polyethers (OSP) has the thermal oxidation stability energy of excellence, high viscosity index (HVI), there is good oil-soluble and unique ether chain structure simultaneously, be the effective way improving diesel engine oil performance using OSP as the addO-on therapy of diesel engine oil base oil；Along with the increase of OSP content in base oil, oil body index increases, and depression of pour point, other index does not have significant change；OSP is better with the interaction of other components of lubricating oil, when OSP is used as the additive containing mineral oil and PAO formula, it is also possible to bring the greasy filth of brilliance, carbon deposit control ability, improve tribological property；And it has very excellent intermiscibility, heat stability and oxidation stability, it it is the good material producing long-life artificial oil, high temperature grease.Therefore the oil product adding OSP has good non-oxidizability, detergency, suppression greasy filth generation performance and resistance to emulsion.
Described a kind of lubricating oil composite for diesel engine, also includes the pour-point depressant of by weight percentage 0.5～2%, and described pour-point depressant is at least one of polyalphaolefin, polymethacrylates and alkylnaphthalene.The effect of pour-point depressant is to ensure that compositions has suitable rheological property.
Described dispersant is Ramulus Uncariae Cum Uncis imidodicarbonic diamide, and described anti-foaming agent is at least one of poly-methyl-silicone oil, fluoro-alkyl ether.Carbon deposit that polar group contained in detersive and dispersant has generated by Van der Waals force or adsorption by hydrogen bond and greasy filth microgranule are also dispersed stably in oil, stop the gathering of these microgranules, deposition, play and suppress engine oil viscosity to increase and alleviate the effect of abrasion.Wherein, Ramulus Uncariae Cum Uncis imidodicarbonic diamide has excellent low temperature dispersity and high-temperature stability, and its base number is 15～30mgKOH/g.Wherein, adding anti-foaming agent is so that lubricating oil possesses suitable or anti-foaming performance.
Described viscosity index improver is at least one of three block coupling hydrogenated styrene-butadiene copolymers, polyisobutylene, ethene-alpha-olefin copolymer.The effect of viscosity index improver is to increase viscosity and improving viscosity index (VI).Its other components with the present invention have the good compatibility, ratio selects properly can not only improve the viscosity-temperature characteristics energy of oil product, compositions can also be made to have the anti-shear performance of excellence, it is ensured that oil product still has suitable viscosity under engine high-temperature, high shear environment simultaneously.
Described friction improver is at least one of dialkyl dithiophosphoric acid oxygen molybdenum, molybdenum dithiocarbamate；Described corrosion inhibitor is at least one of 2,6 ditertiary butyl p cresol, methyl isobutyrate.The effect of friction improver mainly forms one layer of lubricating protective film in metal surface, it is to avoid the directly contact between metal hump, makes the frictional decrease under mixed lubrication and boundary lubrication condition, reduces frictional resistance and abrasion, reaches fuel-economizing purpose.And diesel oil exists the many metals to engine fuel system there is corrosive material; copper, ferrum, aluminum, magnesium and their many alloys can be corroded; diesel oil can absorb the moisture in air simultaneously; add corrosion inhibitor and metal surface strong effect, produce chemically and physically adsorption, form good protecting film; isolate contacting of corrosive deposit and metalwork to a certain extent; reach to suppress the purpose of corrosion, protect engine fuel system, increase the service life.
Preferably, described a kind of lubricating oil composite for diesel engine, including the composition of following percentage by weight:
It is more highly preferred to, described a kind of lubricating oil composite for diesel engine, including the composition of following percentage by weight:
Preferably, the base number of described high-alkali sulfoacid calcium is more than or equal to 290mgKOH/g.
Preferably, the base number of described high-alkali calcium sulfenyl phenolate is more than or equal to 250mgKOH/g.
Total base number TBN (totalbasenumber) refers under prescribed conditions, neutralizes the acid required for being present in 1 gram of oil sample whole alkaline constituentss (containing highly basic and weak base) and measures, is converted into the alkali number of equivalent, represents with mgKOH/g；Namely usually said base number refers to total base number.Machine oil can become acid after for a long time, and the inside of engine can be progressively corroded in acid, so machine oil is all generally alkalescence.TBN is exactly the base number representing machine oil, and value number is more high, and to represent the acid that machine oil can neutralize more many.It is therefore preferable that the base number >=290mgKOH/g of high-alkali sulfoacid calcium, the base number >=250mgKOH/g of high-alkali calcium sulfenyl phenolate, so enable to lubricating oil and possess the acid neutralization performance of excellence, to prevent from causing acid corrosion.
Described a kind of lubricating oil composite for diesel engine, its preparation method comprises the following steps:
Step (1): added by base oil in hybrid reactor, heating makes temperature of liquid to 50～60 DEG C；
Step (2): be sequentially added into high alkalinity detersive in the hybrid reactor of step (1), antioxidant, oil-soluble polyethers, dispersant, anti-foaming agent, viscosity index improver, friction improver, corrosion inhibitor and pour-point depressant, continue to make mixing liquid be warming up to 65～70 DEG C, stir 40～50min at such a temperature；
Step (3): be transferred in cryoprecipitation still by the mixing liquid of step (2), precipitation is cooled to 40～45 DEG C of prepared finished products.
The beneficial effects of the present invention is:
One lubricating oil composite for diesel engine of the present invention, composition including following percentage by weight: base oil 60～88%, high alkalinity detersive 2～6%, antioxidant 0.8～3%, oil-soluble polyethers 2～12%, dispersant 1～2%, anti-foaming agent 0.05～1%, viscosity index improver 5～13%, friction improver 0.1～1%, corrosion inhibitor 0.2～2%；By adding oil-soluble polyethers (OSP) in diesel engine oil, after miscible with refining base oil, substantially increase the compatibility between antioxygenic property and each additive of lubricating oil, increase the service life of lubricating oil；That is, compared with conventional lubrication fluid composition formula, the present invention is by adding oil-soluble polyethers (OSP) and making new formula have the advantage that 1 with the collocation of each component) there is the sediment monitoring performances such as the greasy filth of brilliance, carbon deposit and soot；2) there is the thermal oxidation stability of excellence and the outstanding performance that mixes；3) play synergism with the additive such as corrosion inhibitor, friction improver, bring the performances such as more remarkable corrosion inhibition, friction control, viscosity control for new formula.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention and beneficial effect thereof are described in further detail, but, the specific embodiment of the present invention is not limited thereto.
Embodiment 1～6
Preparation lubricating oil composite for diesel engine, base oil II class hydrogenated base oil 500N, II class hydrogenated base oil 150N, additive has high alkalinity detersive, antioxidant, oil-soluble polyethers, dispersant, anti-foaming agent, viscosity index improver, friction improver, corrosion inhibitor and pour-point depressant, concrete component and content are in Table 1, and preparation method is as follows:
Step (1): added by base oil in hybrid reactor, heating makes temperature of liquid to 50～60 DEG C；
Step (2): be sequentially added into high alkalinity detersive in the hybrid reactor of step (1), antioxidant, oil-soluble polyethers, dispersant, anti-foaming agent, viscosity index improver, friction improver, corrosion inhibitor and pour-point depressant, continue to make mixing liquid be warming up to 65～70 DEG C, stir 40～50min at such a temperature；
Step (3): be transferred in cryoprecipitation still by the mixing liquid of step (2), precipitation is cooled to 40～45 DEG C of prepared finished products.
Table 1 embodiment component and containing scale
Comparative example 1～6
In order to more highlight beneficial effects of the present invention, adopting following comparative example 1～6, concrete component and content in Table 2, its preparation method is with embodiment 1～6.
Table 2 comparative example component and containing scale
Respectively embodiment 1～6 and comparative example 1～6 being carried out experimental test, test result is in Table 3～4.
The test result of table 3 embodiment
The test result of table 4 comparative example
Test result from embodiment 1～2 and comparative example 1～2, compared with conventionally employed I class base oil, the present composition adopts II class hydrogenated base oil, and its total sulfur content, evaporation loss and mechanical admixture significantly reduce, and other indexs are also fully consistent with the requirement of quality standard.From embodiment 3～4 with comparative example 3～4 it can be seen that compared with existing formula, after the present invention adds oil-soluble polyethers (OSP) in formula, the ability that its antioxygenic property, demulsification performance and control viscosity index (VI) increase is substantially better.From embodiment 5 and comparative example 5 it can be seen that the present invention adopt high-alkali sulfoacid calcium and high-alkali calcium sulfenyl phenolate mixing high alkalinity detersive after, its acid neutralize excellent performance, be effectively improved the corrosion that acid causes.From embodiment 6 and comparative example 6 it can be seen that after the present composition adds viscosity index improver and friction improver, oil body index can be significantly improved, improves the rheological property of lubricating oil, reduce friction loss simultaneously.
The announcement of book and instruction according to the above description, above-mentioned embodiment can also be modified and revise by those skilled in the art in the invention.Therefore, the invention is not limited in above-mentioned detailed description of the invention, any conspicuously improved, replacement or modification that every those skilled in the art are done on the basis of the present invention belong to protection scope of the present invention.Although additionally, employ some specific terms in this specification, but these terms are intended merely to convenient explanation, and the present invention does not constitute any restriction.

Claims (10)

1. a lubricating oil composite for diesel engine, it is characterised in that include the composition of following percentage by weight:
Base oil 60 ~ 88%
High alkalinity detersive 2 ~ 6%
Antioxidant 0.8 ~ 3%
Oil-soluble polyethers 2 ~ 12%
Dispersant 1 ~ 2%
Anti-foaming agent 0.05 ~ 1%
Viscosity index improver 5 ~ 13%
Friction improver 0.1 ~ 1%
Corrosion inhibitor 0.2 ~ 2%,
Wherein, described base oil is the II class hydrogenated base oil by API classification；
Described high alkalinity detersive is high-alkali sulfoacid calcium and the compositions of high-alkali calcium sulfenyl phenolate, the two shared percentage by weight respectively 0.5 ~ 2.5% and 1.5 ~ 3.5%；
Described antioxidant is at least one of double; two octyl group zinc dithiophosphate, zinc dialkyl dithiophosphate, p-di-iso-octyldiphenylamine and dialkyl diphenylamine.
2. a kind of lubricating oil composite for diesel engine according to claim 1, it is characterised in that: also including the pour-point depressant of by weight percentage 0.5 ~ 2%, described pour-point depressant is at least one of polyalphaolefin, polymethacrylates and alkylnaphthalene.
3. a kind of lubricating oil composite for diesel engine according to claim 1, it is characterised in that: described dispersant is Ramulus Uncariae Cum Uncis imidodicarbonic diamide, and described anti-foaming agent is at least one of poly-methyl-silicone oil, fluoro-alkyl ether.
4. a kind of lubricating oil composite for diesel engine according to claim 1, it is characterised in that: described viscosity index improver is at least one of three block coupling hydrogenated styrene-butadiene copolymers, polyisobutylene, ethene-alpha-olefin copolymer.
5. a kind of lubricating oil composite for diesel engine according to claim 1, it is characterised in that: described friction improver is at least one of dialkyl dithiophosphoric acid oxygen molybdenum, molybdenum dithiocarbamate；Described corrosion inhibitor is at least one of 2,6 ditertiary butyl p cresol, methyl isobutyrate.
6. a kind of lubricating oil composite for diesel engine according to claim 2, it is characterised in that include the composition of following percentage by weight:
Base oil 70 ~ 80%
High alkalinity detersive 3 ~ 5%
Antioxidant 1 ~ 3%
Oil-soluble polyethers 4 ~ 10%
Dispersant 1.2 ~ 1.8%
Anti-foaming agent 0.08 ~ 1%
Viscosity index improver 6 ~ 10%
Friction improver 0.5 ~ 1%
Corrosion inhibitor 0.5 ~ 1.8%
Pour-point depressant 1 ~ 2%.
7. a kind of lubricating oil composite for diesel engine according to claim 6, it is characterised in that include the composition of following percentage by weight:
Base oil 75%
High alkalinity detersive 4%
Antioxidant 2%
Oil-soluble polyethers 8%
Dispersant 1%
Anti-foaming agent 1%
Viscosity index improver 7%
Friction improver 0.5%
Corrosion inhibitor 0.5%
Pour-point depressant 1%.
8. a kind of lubricating oil composite for diesel engine according to claim 1, it is characterised in that: the base number of described high-alkali sulfoacid calcium is more than or equal to 290mgKOH/g.
9. a kind of lubricating oil composite for diesel engine according to claim 1, it is characterised in that: the base number of described high-alkali calcium sulfenyl phenolate is more than or equal to 250mgKOH/g.
10. a kind of lubricating oil composite for diesel engine according to claim 2, it is characterised in that preparation method comprises the following steps:
Step (1): added by base oil in hybrid reactor, heating makes temperature of liquid to 50 ~ 60 DEG C；
Step (2): be sequentially added into high alkalinity detersive in the hybrid reactor of step (1), antioxidant, oil-soluble polyethers, dispersant, anti-foaming agent, viscosity index improver, friction improver, corrosion inhibitor and pour-point depressant, continue to make mixing liquid be warming up to 65 ~ 70 DEG C, stir 40 ~ 50min at such a temperature；
Step (3): be transferred in cryoprecipitation still by the mixing liquid of step (2), precipitation is cooled to 40 ~ 45 DEG C of prepared finished products.
CN201610181883.XA 2016-03-28 2016-03-28 Diesel engine lubricating oil composition Pending CN105733780A (en)

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
CN106367171A (en) * 2016-08-28 2017-02-01 许星星 Diesel engine lubricating oil with long service cycle and preparation method thereof
CN106381207A (en) * 2016-08-31 2017-02-08 东营市昊铭润滑科技有限公司 Diesel engine lubricating oil with long replacing period and preparation method thereof
CN106609173A (en) * 2016-10-26 2017-05-03 广西北海玉柴马石油高级润滑油有限公司 Lubricating oil special for Euro VI engines
CN106967482A (en) * 2017-03-01 2017-07-21 浙江吉利控股集团有限公司 One kind is used for Lubricant composition for methanol engine and preparation method thereof
CN107129684A (en) * 2017-04-24 2017-09-05 武汉博达特种润滑技术有限公司 Insulated enclosure oil/fat composition for cable accessory and preparation method thereof
CN107164053A (en) * 2017-05-24 2017-09-15 烟台澳博论润滑油有限公司 A kind of high speed trunk-piston bavin machine oil
CN108219908A (en) * 2018-02-28 2018-06-29 河南道骐汽车科技有限公司 A kind of long-life environment-friendly type bavin machine oil
CN109486249A (en) * 2018-11-27 2019-03-19 徐州市恩矿新材料有限公司 A kind of formula of the coating of food-grade wear-resistant material
CN110373253A (en) * 2019-06-14 2019-10-25 罗向东 It is a kind of to meet the fierce low viscosity abrasion-proof energy-saving lubricating oil and preparation method thereof driven
CN112592754A (en) * 2020-12-14 2021-04-02 统一石油化工有限公司 Long-life natural gas engine oil composition
CN114085692A (en) * 2021-12-08 2022-02-25 东营市东滨石油技术服务有限公司 Low-temperature-resistant wear-resistant lubricating oil
CN114133974A (en) * 2021-12-08 2022-03-04 东营市东滨石油技术服务有限公司 Diesel engine lubricating oil

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106367171A (en) * 2016-08-28 2017-02-01 许星星 Diesel engine lubricating oil with long service cycle and preparation method thereof
CN106381207A (en) * 2016-08-31 2017-02-08 东营市昊铭润滑科技有限公司 Diesel engine lubricating oil with long replacing period and preparation method thereof
CN106609173A (en) * 2016-10-26 2017-05-03 广西北海玉柴马石油高级润滑油有限公司 Lubricating oil special for Euro VI engines
CN106967482A (en) * 2017-03-01 2017-07-21 浙江吉利控股集团有限公司 One kind is used for Lubricant composition for methanol engine and preparation method thereof
CN107129684A (en) * 2017-04-24 2017-09-05 武汉博达特种润滑技术有限公司 Insulated enclosure oil/fat composition for cable accessory and preparation method thereof
CN107164053A (en) * 2017-05-24 2017-09-15 烟台澳博论润滑油有限公司 A kind of high speed trunk-piston bavin machine oil
CN108219908A (en) * 2018-02-28 2018-06-29 河南道骐汽车科技有限公司 A kind of long-life environment-friendly type bavin machine oil
CN109486249A (en) * 2018-11-27 2019-03-19 徐州市恩矿新材料有限公司 A kind of formula of the coating of food-grade wear-resistant material
CN110373253A (en) * 2019-06-14 2019-10-25 罗向东 It is a kind of to meet the fierce low viscosity abrasion-proof energy-saving lubricating oil and preparation method thereof driven
CN112592754A (en) * 2020-12-14 2021-04-02 统一石油化工有限公司 Long-life natural gas engine oil composition
CN114085692A (en) * 2021-12-08 2022-02-25 东营市东滨石油技术服务有限公司 Low-temperature-resistant wear-resistant lubricating oil
CN114133974A (en) * 2021-12-08 2022-03-04 东营市东滨石油技术服务有限公司 Diesel engine lubricating oil

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