CN107987931A - Lubricating oil composition for automatic transmission - Google Patents

Lubricating oil composition for automatic transmission Download PDF

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Publication number
CN107987931A
CN107987931A CN201710933975.3A CN201710933975A CN107987931A CN 107987931 A CN107987931 A CN 107987931A CN 201710933975 A CN201710933975 A CN 201710933975A CN 107987931 A CN107987931 A CN 107987931A
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Prior art keywords
mass
lubricant oil
lubricant
oil composite
base
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CN201710933975.3A
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CN107987931B (en
Inventor
小松原仁
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Jxtg Energy Corp
Eneos Corp
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Jxtg Energy Corp
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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
    • C10M169/044—Mixtures of base-materials and additives the additives being a mixture of 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
    • 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
    • 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
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen 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
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers 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
    • C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
    • C10M2205/163—Paraffin waxes; Petrolatum, e.g. slack wax used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • 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
    • C10M2215/08—Amides
    • 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
    • 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
    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C10M2219/106—Thiadiazoles
    • 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
    • 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
    • C10M2223/049—Phosphite
    • 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
    • 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
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/54—Fuel economy
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
    • C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions

Abstract

The lubricating oil composition for automatic transmission with lazy-tongs is provided, it improves fuel consumption conservation performance, and meets the anti-sintered and wearability required by speed change machine oil, the preventing property of displacement of the wet clutch and net synchronization capability of lazy-tongs.Lubricating oil composition for automatic transmission with lazy-tongs contains：(A) it is base oil as the mineral oil system base oil of lubricant base and/or synthesis；(B) thiadiazole compound；(C) more than the 0.1 mass % of phosphorous friction regulator of the alkyl or alkenyl of the straight chain with carbon number more than 12；(D) phosphor-included additive beyond above-mentioned (C) component, its content are the amounts for making whole phosphorus amounts in composition be more than 0.04 mass %；Poly- (methyl) acrylate of (E) weight average molecular weight 50, less than 000, kinematic viscosity of the composition at 40 DEG C are 25mm2/ below s, viscosity index (VI) are more than 170, and whole sulfur contents in composition are more than 0.20 mass %.

Description

Lubricating oil composition for automatic transmission
Technical field
The present invention relates to lubricating oil composition for automatic transmission (fluid drive engine oil base oil), in more detail, relate to And suitable for having gear automatic speed variator, improving fuel consumption conservation performance of lazy-tongs such as double-clutch speed changer Fluid composition.
Background technology
As one of energetic means of province in the geared system of variable-speed motor and final gear reducer etc., lubrication can be enumerated The lowering viscousity of oil.Such as variable-speed motor, final gear reducer etc. have gear-bearing mechanism, by for these lubricating oil low viscosity Change, stirring resistance and trailing moment reduce caused by thus enabling that the viscous drag of lubricating oil, improve the conduction efficiency of power, As a result, it is regarded to improve fuel consumption conservation performance.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2010-196063 publications
Patent document 2：Japanese Unexamined Patent Publication 2007-131856 publications
The content of the invention
Problems to be solved by the invention
If however, by the lubricating oil lowering viscousity for these geared systems, due to maintaining oil film thick on lubrication face Degree becomes difficult, then there are the tendency that anti-sintered (resistance to lifting capacity), wearability reduce.
Moreover, there is the automatic speed variator of lazy-tongs for double-clutch speed changer for being researched and developed in recent years etc. For lubricating oil, displacement for preventing wet clutch etc. is not only required all the time to the property required by fluid drive machine oil Can, it is also desirable to have the performance only required by hand gear machine oil at present of the net synchronization capability of clutch ring etc..
The problem of the present invention is：A kind of raising fuel consumption conservation performance is provided, and meets the burn-out-proof required by speed change machine oil The net synchronization capability of knot property and wearability, the preventing property of displacement of wet clutch and lazy-tongs has the automatic of lazy-tongs Variable-speed motor lubricant oil composite.
The method used for solving the problem
An embodiment of the invention is a kind of lubricating oil composition for automatic transmission with lazy-tongs, it is special Sign is, contains：(A) lubricant base, its for more than a kind mineral oil system base oil or more than a kind of synthesis be base oil or it Mixture；(B) thiadiazole compound；(C) the phosphorous friction of the alkyl or alkenyl of the straight chain with carbon number more than 12 Regulator, during using lubricant oil composite total amount as benchmark, the content of the phosphorous friction regulator is more than 0.1 mass %；(D) Phosphor-included additive beyond above-mentioned (C) component, the content of the phosphor-included additive be make whole phosphorus amounts in lubricant oil composite with It is the amount of more than 0.04 mass % when lubricant oil composite total amount is as benchmark；(E) weight average molecular weight is less than 50,000 Poly- (methyl) acrylate, kinematic viscosity of the lubricant oil composite at 40 DEG C are 25mm2/ below s, viscosity index (VI) for 170 with On, during using lubricant oil composite total amount as benchmark, whole sulfur contents in lubricant oil composite are more than 0.20 mass %.
In the present specification, " (methyl) acrylate " refers to " acrylate and/or methacrylate ".
In one preferred embodiment, kinematic viscosity of above-mentioned (A) lubricant base at 100 DEG C is 3.3mm2/s Below.
In one preferred embodiment, in above-mentioned (A) lubricant base, benchmark is used as using lubricant base total amount When, (A1) API classification Group II base oil, Group III base oil and/or Group IV comprising below 99 mass % of more than 70 mass % Base oil.
In one preferred embodiment, in above-mentioned (A) lubricant base, benchmark is used as using lubricant base total amount When, the kinematic viscosity of (A2) comprising below 30 mass % of more than 1 mass % at 100 DEG C is 3mm2/ below s, viscosity index (VI) For the ester group oil that more than 130, flash-point is more than 200 DEG C, pour point is less than -30 DEG C.
In one preferred embodiment, whole sulfur content S in lubricant oil composite with it is complete in lubricant oil composite The ratio between portion phosphorus amount P S/P is less than more than 38.
In one preferred embodiment, lubricant oil composite contains (F) calcium system detergent, which contains Amount is as below 0.01 mass % when making whole calcium amounts in lubricant oil composite using lubricant oil composite total amount as benchmark Amount.
In one preferred embodiment, lubricant oil composite contains the straight chain of (G) with carbon number more than 12 The aliphatic amide compound of alkyl or alkenyl, during using lubricant oil composite total amount as benchmark, the aliphatic amide compound Content be below 1.0 mass % of more than 0.3 mass %.
Invention effect
Improve fuel consumption conservation performance in accordance with the invention it is possible to provide, and meet the anti-sintered required by speed change machine oil and The automatic speed variator with lazy-tongs of the net synchronization capability of wearability, the preventing property of displacement of wet clutch and lazy-tongs Use lubricant oil composite.
Embodiment
Hereinafter, the present invention is described in detail.It should be noted that unless otherwise specified, for numerical value A and B, " A~ The such statements of B " refer to " more than A below B ".In such statement, in the case of only indicating unit to numerical value B, the unit It is also applied for numerical value A.In addition, term as "or" and "or" is unless otherwise noted, its implication for logic or.
＜ (A) lubricant bases ＞
Lubricating oil composition for automatic transmission (hereinafter sometimes referred to " the fluid drive with lazy-tongs of the present invention Machine oil " or " lubricant oil composite ".) in, as lubricant base, can use comprising selected from mineral oil system base oil and synthesis system More than a kind of base oil in base oil, is not particularly limited.
As mineral oil system base oil, specifically, can illustrate：Crude oil progress air-distillation is obtained into atmospheric resids, will Obtained atmospheric resids are evaporated under reduced pressure to obtain lube cut, and solvent deasphalting, molten is carried out to obtained lube cut More than a kind in agent extraction, hydrogenative decomposition, hydrogenation isomerization, solvent dewaxing, contact dewaxing, the refinement treatment such as hydrofining and Obtained paraffin series or the mineral oil system base oil of naphthene series, and by wax isomerization mineral oil, GTL WAX (gas turns liquid wax) by different Base oil of method manufacture of structure etc..
, can be preferably using hydrogenative decomposition mineral oil system's base oil and/or petroleum wax will be contained as mineral oil system base oil Or GTL waxes (such as Fischer-Tropsch synthesis oil etc..) raw material of more than 50 mass % carries out the obtained different paraffin series of wax isomerization of isomerization Base oil.
It is base oil as synthesis, can illustrating such as poly alpha olefin, (such as ethylene-propylene copolymer, polybutene, 1- are pungent Alkene oligomer, 1- decylene oligomers etc..) or its hydride；Monoesters (such as butyl stearate, octyl laurate etc..)；Two Ester (such as two-tridecyl glutarate, two -2- ethyl hexyl adipates, diiso decyl adipate ester, two-tridecane Base adipate ester, two -2- ethylhexyl sebacates etc.)；Polyester (such as trimellitic acid ester etc..)；Polyol ester (such as Trimethylolpropane caprylate, trimethylolpropane pelargonate, pentaerythrite -2 ethyl hexanoic acid ester, pentaerythrite pelargonate Deng.)；Fragrant family artificial oil (such as alkylbenzene, alkylnaphthalene, aromatic ester etc..)；With these mixture etc..
The %C of mineral oil system base oilPPreferably more than 70, it is more preferably more than 80, in addition usually less than 99, be preferably Less than 95.By the %C for making mineral oil system base oilPMore than above-mentioned lower limit, it is possible to increase viscosity-temperature profile, hot oxygen Change stability and frictional behavior.In addition, the %C by making lubricant basepBelow above-mentioned upper limit value, it is possible to increase additive Dissolubility.
The %C of mineral oil system base oilAPreferably less than 2, it is more preferably less than 1, more preferably less than 0.8, particularly preferably For less than 0.5.By the %C for making mineral oil system base oilABelow above-mentioned upper limit value, it is possible to increase viscosity-temperature profile, Thermo oxidative stability and fuel consumption conservation performance.
The %C of mineral oil system base oilNPreferably less than 30, it is more preferably less than 25, it is additionally preferred to be more than 1, more preferably For more than 4.By the %C for making mineral oil system base oilNBelow above-mentioned upper limit value, it is possible to increase viscosity-temperature profile, heat Oxidation stability and frictional behavior energy.In addition, by making %CNMore than above-mentioned lower limit, it is possible to increase the dissolving of additive Property.
%C in the present specificationP, %CNAnd %CAImplication be the method (n-d- based on ASTM D3238-85 respectively M ring analyses) try to achieve, paraffin carbon number relative to the percentage of whole carbon numbers, cycloalkanes carbon number relative to whole The percentage of carbon number and aromatic carbon atoms number relative to whole carbon numbers percentage.That is, above-mentioned % CP, %CNAnd %CAPreferred scope be the value tried to achieve based on the above method, even such as the mineral oil system without cycloalkanes component Base oil, the %C tried to achieve by the above methodNIt may also be shown as the value more than 0.
Kinematic viscosity of the lubricant base at 100 DEG C is preferably 3.3mm2/ below s, it is additionally preferred to be 2.0mm2/ s with On, it is more preferably 2.5mm2/ more than s, particularly preferably 2.6mm2/ more than s.By making kinematic viscosity of the base oil at 100 DEG C be Below above-mentioned upper limit value, it is possible to increase fuel consumption conservation performance, additionally is able to make the low-temperature viscosity profiles of lubricant oil composite to become Well.Additionally by kinematic viscosity of the base oil at 100 DEG C is made for more than above-mentioned lower limit, the oil film shape at lubrication can be made Into becoming abundant, it is possible to increase lubricity.It should be noted that in the present specification, " kinematic viscosity at 100 DEG C " refers to The kinematic viscosity at 100 DEG C of ASTM D-445 defineds.
Kinematic viscosity of the lubricant base at 40 DEG C is preferably 40mm2/ below s, is more preferably 30mm2/ below s, it is more excellent Elect 20mm as2/ below s, particularly preferably 15mm2/ below s, it is additionally preferred to be 8.0mm2/ more than s, is more preferably 8.5mm2/s More than, particularly preferably 9.0mm2/ more than s.By make kinematic viscosity of the lubricant base at 40 DEG C for above-mentioned upper limit value with Under, it is possible to increase fuel consumption conservation performance, additionally is able to make the low-temperature viscosity profiles of lubricant oil composite to become good.Additionally by Kinematic viscosity of the base oil at 40 DEG C is set to become abundant for that more than above-mentioned lower limit, can be formed the oil film at lubrication, energy Enough improve lubricity.It should be noted that in the present specification, " kinematic viscosity at 40 DEG C " refers to ASTM D-445 institutes The defined kinematic viscosity at 40 DEG C.
The viscosity index (VI) of lubricant base is preferably more than 100.More preferably it is more than 110, more preferably more than 115.It is logical Cross make the viscosity index (VI) of base oil for more than above-mentioned lower limit, can not only improve the viscosity-temperature profile of lubricant oil composite and Thermo oxidative stability, additionally it is possible to improve preventing property of abrasion.It should be noted that in the present specification, viscosity index (VI) refers to base In the viscosity index (VI) that JIS K 2283-1993 are measured.
The pour point of lubricant base is preferably less than -10 DEG C, is more preferably less than -12.5 DEG C, more preferably -15 DEG C Hereinafter, less than -17.5 DEG C are particularly preferably, is most preferably less than -20 DEG C.If pour point exceedes above-mentioned upper limit value, lubricating oil The low temperature flow of composition entirety has the tendency of reduction.It should be noted that in the present specification, pour point refers to be based on JIS The pour point that K 2269-1987 are measured.
From the viewpoint of oxidation stability, the content of the sulphur component in lubricant base is preferably below 1.5 mass %, More preferably it is below 1.0 mass %.
In lubricant base, preferably using lubricant base total amount as benchmark when, contain 99 mass % of more than 70 mass % Following (A1) API classification Group II, Group III or Group IV base oil (hereinafter sometimes referred to " base oil (A1) ".).Base oil (A1) It is the Group II base oil or Group III base oil or Group IV base oil or their mixing base oil of API classification.Group II base oil is Sulphur component is below 0.03 mass %, saturated component is more than 90 mass % and viscosity index (VI) is more than 80 and the ore deposit less than 120 Thing oil system base oil.Group III base oil is that sulphur component is, saturated component is more than 90 mass % and viscosity below 0.03 mass % Index is more than 120 mineral oil system base oil.Group IV base oil is poly alpha olefin.
In lubricant base, preferably using lubricant base total amount as benchmark, contain below 30 mass % of more than 1 mass % (A2) kinematic viscosity at 100 DEG C be 3mm2/ below s, viscosity index (VI) are more than 130, flash-point is more than 200 DEG C, pour point It is oily (hereinafter sometimes referred to " base oil (A2) " for less than -30 DEG C of ester groups.).By making the content of base oil (A2) be above-mentioned lower limit More than value, it is possible to increase gear, the fatigue life of bearing.Additionally by making the content of base oil (A2) for below above-mentioned upper limit value, The net synchronization capability and stripping performance of clutch ring can be improved, and the conduction torque capacity of wet clutch can be improved.
As base oil (A2), the above-mentioned of monoesters base oil, diester base oil, polyester base oil, polyol ester base oil etc. can be used Kinematic viscosity among ester group oil at 100 DEG C is 3mm2/ below s, viscosity index (VI) are more than 130, flash-point is more than 200 DEG C, Pour point is less than -30 DEG C of base oil, can be preferably using monoesters base oil and/or diester base oil.
Kinematic viscosity of the base oil (A2) at 100 DEG C is 3mm2/ below s, is preferably 2.0mm2/ more than s, more preferably for 2.5mm2/ more than s.It is 3mm by making kinematic viscosity of the base oil (A2) at 100 DEG C2/ below s, easily improves fuel consumption conservation Energy.Additionally by kinematic viscosity of the base oil (A2) at 100 DEG C is made for more than above-mentioned lower limit, the oil film at lubrication can be made Formation becomes abundant, easily improves lubricity.
The viscosity index (VI) of base oil (A2) is more than 130, is more preferably more than 135.By the viscosity index (VI) for making base oil (A2) For more than 130, the oil-film retention property when low temperature flow and high temperature of lubricant oil composite can be easily improved.Base oil (A2) The upper limit of viscosity index (VI) is not particularly limited, such as can be less than 300.
The flash-point of base oil (A2) is more than 200 DEG C, is more preferably more than 210 DEG C.By making the flash-point of base oil (A2) be 200 More than DEG C, the evaporation characteristic of lubricant oil composite can be made become good.The upper limit of the flash-point of base oil (A2) is not particularly limited, Such as it can be less than 300 DEG C.
The pour point of base oil (A2) is less than -30 DEG C, is more preferably less than -35 DEG C.By the pour point for making base oil (A2) For less than -30 DEG C, it is possible to increase cold cranking capacity.The lower limit of the pour point of base oil (A2) is not particularly limited, such as can be- More than 100 DEG C.
In the lubricant oil composite of the present invention, preferably：During using lubricant base total amount as benchmark, in lubricant base The content of base oil (A1) be below 99 mass % of more than 70 mass %, and during using lubricant base total amount as benchmark, profit The content of base oil (A2) in lubricating oil base oil is below 30 mass % of more than 1 mass %.In this embodiment it is preferred that with lubrication When oil base oil total amount is as benchmark, the content of the base oil beyond base oil (A1) and base oil (A2) in lubricant base is 5 matter Below % is measured, is more preferably below 2 mass %, or 0 mass %.In the present specification, beyond base oil (A1) and (A2) The content of base oil refer to that lubricant base is made of base oil (A1) and base oil (A2) for 0 mass %.
＜ (B) thiadiazole compounds ＞
The present invention lubricant oil composite contain more than a kind thiadiazole compound (hereinafter sometimes referred to " and (B) into Point ".).(B) component can be used alone, two or more can also be applied in combination.
As the preference of (B) component, 1,3,4- thiadiazole compounds shown in the following general formula (1), following can be enumerated The 1,2,3- thiadiazole compounds shown in 1,2,4- thiadiazole compounds and the following general formula (3) shown in general formula (2).
(in general formula (1)~(3), R1And R2Can be the same or different, separately represent hydrogen or carbon number 1~ 20 alkyl；A and b can be the same or different, and separately represent 0~8 integer.)
During using lubricant oil composite total amount as benchmark, whole sulfur contents in lubricant oil composite are more than 0.20 mass % Amount.In addition the upper limit of whole sulfur contents in lubricant oil composite (lubricant oil composite total amount benchmark) is not particularly limited, excellent Elect as below 0.45 mass %, be more preferably below 0.40 mass %.Lubricant oil composite moistens by containing (B) component Whole sulfur contents in sliding oil composition are more than 0.20 mass %, it is possible to increase wearability, anti-sintered and fatigue life.In addition It is below 0.45 mass % by making whole sulfur contents in lubricant oil composite, it is less than 8 to make S/P ratios described later, is easily improved Wearability, wearability, fatigue life, the fissility of the preventing property of displacement of wet clutch and brass clutch ring.
From the whole sulfur contents made in lubricant oil composite within the above range from the viewpoint of, in lubricant oil composite (B) it is preferably more than 0.05 mass % in terms of sulfur content, separately when the content of component itself is using lubricant oil composite total amount as benchmark It is preferably outside below 0.35 mass %, is more preferably below 0.30 mass %.
The phosphorous friction regulator ＞ of ＜ (C)
The phosphorous of alkyl or alkenyl that the lubricant oil composite of the present invention contains the straight chain with carbon number more than 12 rubs Wipe regulator (hereinafter sometimes referred to " (C) component ".).(C) component can be used alone, and can also make two or more combination With.
As the example of (C) component, can enumerate shown in phosphite ester and the following general formula (5) shown in the following general formula (4) Phosphate and their metal salt and ammonium salt, preferably using more than a kind among these.Wherein, can be especially excellent Choosing uses more than a kind in the phosphite ester shown in the following general formula (4), its metal salt and ammonium salt.
(in general formula (4) and (5), R3For the alkyl or alkenyl of the straight chain of carbon number more than 12, R4For hydrogen or carbon number The alkyl or alkenyl of more than 12 straight chain, R3With R4Can it is identical can also be mutually different.)
(C) carbon number of " alkyl or alkenyl of the straight chain of carbon number more than 12 " of component is preferably more than 14, separately Outer is usually less than 30, is preferably less than 20.By making above-mentioned carbon number be more than 12, it is possible to increase the position of wet clutch The fissility of only property of being shifted elsewhere for garrison duty and brass system clutch ring.
On the phosphorus compound shown in general formula (4) and (5), in R4It is monoesters when being hydrogen, in R4It is carbon number more than 12 It is diester during the alkyl or alkenyl of straight chain.Compound shown in general formula (4) and (5) can be it is any number of in monoesters and diester, Preferably diester.
As the example of the salt of the phosphorus compound shown in general formula (4) and (5), above-mentioned phosphorus compound and metal oxygen can be enumerated The metal bases such as compound, metal hydroxides, metal carbonate, metal chloride, ammonia, in the molecule only containing carbon number 1~ The nitrogen compound such as 30 alkyl or the amine compounds of hydroxyl alkyl is had an effect, by the one or all of remaining acidic hydrogen The salt with obtained from.
As the example of the metal in above-mentioned metal base, the alkali such as the alkali metal such as lithium, sodium, potassium, caesium, calcium, magnesium, barium can be enumerated Heavy metals such as earth metal, zinc, copper, iron, lead, nickel, silver, manganese etc..Alkaline-earth metal and the zinc such as preferred calcium, magnesium among these.Need Bright, in the present specification, " alkaline-earth metal " also includes magnesium.
As the example of above-mentioned nitrogen compound, ammonia, monoamine, diamines, polyamines and alkanolamine can be enumerated.More specifically, Methylamine, ethamine, propylamine, butylamine, amylamine, hexylamine, heptyl amice, octylame, nonyl amine, decyl amine, undecyl amine, dodecyl can be enumerated Amine, tridecyl amine, tetradecylamine, pentadecyl amine, hexadecylamine, heptadecyl amine, octadecylamine, dimethylamine, Diethylamine, di-n-propylamine, dibutyl amine, diamylamine, dihexylamine, two heptyl amices, dioctylamine, nonyl amine, didecylamine, two-undecyl amine, Two-lauryl amine, two-tridecyl amine, two-tetradecylamine, two-pentadecyl amine, two-hexadecylamine, two-ten seven Alkylamine, two-octadecylamine, Methylethyl amine, methyl-propyl amine, methyl butyl amine, ethyl propyl amine, N-Ethylbutylamine and Propylbutylamine etc. has the alkylamine of the straight or branched alkyl of carbon number 1~30；Vinyl amine, acrylic amine, butylene Base amine, octenyl amine and oleyl amine etc. have the alkenyl amine of the straight or branched alkenyl of carbon number 2~30；Carbinolamine, monoethanolamine, Propanolamine, butanolamine, amylalcohol amine, hexanol amine, enanthol amine, octanol amine, nonyl alcohol amine, methanol/ethanol amine, methanol Propanolamine, methanol fourth Hydramine, ethanol propanol amine, ethanol and butanol amine and propyl alcohol butanolamine etc. have the straight or branched silane alcohol base of carbon number 1~30 Alkanolamine；Methylene diamine, ethylene diamine, trimethylene diamine and butylene diamine etc. have the alkylene of carbon number 1~30 The alkylene amines of base；The polyamines such as diethylenetriamines, trien, tetren, penten；Hendecane Base diethylamide, undecyl diethanol amine, dodecyl hydramine, oil base diethanol amine, oil base trimethylene diamine, tristearin The hydrogen atom of the amine compounds by above-mentioned monoamine, diamines, polyamines, alkanolamine etc. of base tetren etc. further utilizes carbon Compound obtained from the alkyl or alkenyl substitution of atomicity 8~20；The heterocyclic compounds such as imidazoline；The oxidation of these compounds Olefin addition product；With these mixture etc..
Among these nitrogen compounds, preferably primary amine, secondary amine and alkanolamine, particularly preferred decyl amine, lauryl amine, dimethyl Lauryl amine, tridecyl amine, heptadecyl amine, octadecylamine, oleyl amine and stearylamine etc. have carbon number 10~ The aliphatic amine of the alkyl or alkenyl of 20 straight or branched.
During using lubricant oil composite total amount as benchmark, the content of (C) component in lubricant oil composite is 0.1 mass % More than, it is preferably more than 0.15 mass %, it is additionally preferred to be below 2.0 mass %, be more preferably below 1.5 mass %.Pass through Make the content of (C) component to be more than above-mentioned lower limit, it is possible to increase wearability, anti-sintered, fatigue life and wet clutch Preventing property of displacement.Additionally by the content of (C) component is made below above-mentioned upper limit value, easily to improve the conduction of wet clutch Torque capacity.
Phosphor-included additive ＞ beyond ＜ (D) (C) component
The lubricant oil composite of the present invention contains the phosphor-included additive (hereinafter sometimes referred to " (D) beyond above-mentioned (C) component Component ".).(D) component can be used alone, two or more can also be applied in combination.
As (D) component, the phosphor-included additive beyond above-mentioned (C) component can be used, is not particularly limited.As so Phosphor-included additive, can enumerate the compound for example shown in the following general formula (6), the compound shown in the following general formula (7), these Metal salt and ammonium salt, can use be selected from more than a kind therein.
(in general formula (6), X1、X2And X3Separately represent oxygen atom or sulphur atom；R5Represent carbon number 1~30 Alkyl；R6And R7Separately represent the alkyl of hydrogen atom or carbon number 1~30；R5、R6And R7Can it is identical can also phase It is mutually different；R6And R7At least one party be hydrogen atom in the case of, R5、R6And R7For " the alkyl of the straight chain of carbon number more than 12 Or alkenyl " beyond group.)
(in general formula (7), X4、X5、X6And X7Separately represent oxygen atom or sulphur atom；R5、R6And R7Definition with it is upper State identical.)
As the example of the alkyl of the carbon number 1~30 in general formula (6) and (7), alkyl, cycloalkyl, alkene can be enumerated Base, alkyl-substituted cycloalkyl, aryl, alkyl substituting aromatic base and aryl alkyl etc..Alkyl is preferably the alkyl of carbon number 1~30 Or the aryl of carbon number 6~24, it is more preferably carbon number 3~18, is more preferably the alkyl of carbon number 4~12.
As the salt of the phosphorus compound shown in general formula (6) or (7), phosphorus compound and metal oxide, metal can be enumerated The metal bases such as hydroxide, metal carbonate, metal chloride, ammonia, in the molecule the alkyl only containing carbon number 1~30 or The nitrogen compounds such as the amine compounds of hydroxyl alkyl are had an effect, obtained from the one or all of remaining acidic hydrogen is neutralized Salt.
, specifically, can as the example for the metal that metal salt is formed with the phosphorus compound shown in general formula (6) or (7) Enumerate heavy metals such as the alkaline-earth metal such as the alkali metal such as lithium, sodium, potassium, caesium, calcium, magnesium, barium, zinc, copper, iron, lead, nickel, silver, manganese etc..This Alkaline-earth metal and the zinc such as preferred calcium, magnesium among a little.
As the example for the nitrogen compound that ammonium salt is formed with the phosphorus compound shown in general formula (6) or (7), can enumerate Ammonia, monoamine, diamines, polyamines etc., more specifically, it is being associated, identical with above-mentioned nitrogen compound to enumerate with (C) component Material.
The content of (D) component in lubricant oil composite is to make whole phosphorus amounts in lubricant oil composite with lubricating oil composition It is the amount of more than 0.04 mass % when thing total amount is as benchmark.By making whole phosphorus amounts in lubricant oil composite be 0.04 matter Measure more than %, it is possible to increase wearability, anti-sintered, the preventing property of displacement of fatigue life and wet clutch.With lubricating oil group When compound total amount is as benchmark, whole phosphorus amounts in lubricant oil composite are preferably below 0.15 mass %, are more preferably 0.09 Below quality %.By making whole phosphorus amounts in lubricant oil composite be below above-mentioned upper limit value, it is possible to increase wearability, burn-out-proof The preventing property of displacement of knot property, fatigue life and wet clutch.
From the viewpoint of the whole phosphorus amounts made in lubricant oil composite are more than above-mentioned lower limit, with lubricant oil composite When total amount is as benchmark, the content of (D) component itself in lubricant oil composite is preferably calculated as more than 0.02 mass % with phosphorus amount.
Poly- (methyl) the acrylate ＞ of ＜ (E)
The lubricant oil composite of the present invention contains poly- (methyl) acrylate of the weight average molecular weight below 50,000 (to be had below When be known as " (E) component ".).It should be noted that in the present specification, " (methyl) acrylate " refer to " acrylate and/ Or methacrylate ".
(E) component is either poly- (methyl) acrylate of decentralized or poly- (methyl) third of non-dispersive type Olefin(e) acid ester.(E) weight average molecular weight of component be 50, less than 000, it is additionally preferred to be 10, more than 000, be more preferably 15,000 with On.By making the weight average molecular weight of (E) component be 50, less than 000, it is possible to increase the shear stability of lubricant oil composite.Separately Outside by making the weight average molecular weight of (E) component be more than above-mentioned lower limit easily to improve the viscosity index (VI) of lubricant oil composite.
(E) component plays a role as viscosity index improving agent.The content of (E) component in lubricant oil composite can be Kinematic viscosity and viscosity index (VI) of the lubricant oil composite at 40 DEG C is set to become the amount in aftermentioned scope.Specific content is because of (E) The weight average molecular weight of component and it is different, can be 3 such as during using lubricant oil composite total amount as benchmark (100 mass %)~ 20 mass %.
＜ (F) calcium system detergent ＞
In one preferred embodiment, lubricant oil composite of the invention can further contain calcium system detergent (hereinafter sometimes referred to " (F) component ".).(F) component can be used alone, two or more can also be applied in combination.
Can be using calcium system detergent known to sulfoacid calcium, calcium phenoxide, calcium salicylate etc. as (F) component, can be preferred Use sulfoacid calcium.
As calcium sulfonate detergents, the alkyl aromatic sulphur for obtaining alkyl aromatic compound sulfonation can be preferably illustrated The calcium salt or its basic salt or overbased salt of acid.The weight average molecular weight of alkyl aromatic compound is preferably 400~1500, more excellent Elect 700~1300 as.
As alkyl aryl sulfonate, for example so-called mahogany acid or synthesis sulfonic acid can be enumerated.In this as oil Sulfonic acid, can enumerate by-product when the material of the alkyl aromatic compound sulfonation of the lube cut of mineral oil, white oil manufacture Raw so-called mahogany acid etc..In addition, an example as synthesis sulfonic acid can be enumerated：Given birth to as the alkylbenzene of the raw material of cleaning agent Produce the by-product recovery in equipment or benzene is had into straight-chain or branched obtained from polyolefin is alkylated The alkylbenzene of alkyl carries out the material that sulfonation obtains.As other an examples of synthesis sulfonic acid, can enumerate dinonyl naphthalene etc. Material obtained from alkylnaphthalene sulfonation.In addition, sulfonating agent during as by these alkyl aromatic compound sulfonation, without special Limitation, can use such as oleum, anhydrous slufuric acid.
As calcium phenoxide detergent, the calcium salt of the compound with the structure shown in the following general formula (8) can be preferably illustrated Overbased salt.
In general formula (8), R8Represent straight or branched, saturation or the undersaturated alkyl or alkenyl of carbon number 6~21, c For the degree of polymerization and represent 1~10 integer, A represents sulphur (- S-) base or methylene (- CH2-) base, the integer of d expressions 1~3. It should be noted that R8It can be the combination of different group of more than two kinds.
R in general formula (8)8Carbon number be preferably 9~18, be more preferably 9~15.R8Carbon number less than 6 when, There is the worry of the dissolubility difference relative to base oil, on the other hand, R8Carbon number more than 21 in the case of be difficult to manufacture sometimes, In addition also there is the worry of poor heat resistance.
Degree of polymerization c in general formula (8) is preferably 1~3.By making degree of polymerization c within the range, it is possible to increase heat resistance.
As calcium salicylate detergent, calcium salicylate or its basic salt or overbased salt can be preferably illustrated.It is described herein Calcium salicylate can preferably illustrate compound shown in the following general formula (9).
In above-mentioned general formula (9), R9Separately represent the alkyl or alkenyl of carbon number 14~30, e expressions 1 or 2 are excellent Elect 1 as.It should be noted that in the case of e=2, R9It can be the combination of different groups.
The manufacture method of calcium salicylate is not particularly limited, and can use the manufacture method of known monoalkyl salicylate Deng.For example, using phenol as initial feed, it is alkylated using alkene, then carries out carboxylation using carbon dioxide etc. Obtained monoalkyl salicylic acid, alternatively, using salicylic acid as initial feed, is alkylated to obtain using the above-mentioned alkene of equivalent Monoalkyl salicylic acid etc., react the calcium alkali of oxide, the hydroxide of calcium etc. and above-mentioned monoalkyl salicylism reaction etc., Or, these monoalkyl salicylic acids etc. are temporarily made after the alkali metal salts such as sodium salt, sylvite and carry out metal exchange etc. with calcium salt, can Calcium salicylate is made.
(F) base number of component is preferably 100~500mgKOH/g.
(F) the metal ratio of component is based on the value being calculated as follows, and is preferably more than 1.0, it is additionally preferred to is less than 2.0.
(F) valence mumber of the metallic element in the tenor (mol) of the metal ratio of component=(F) component × (F) component/ (F) the soap base content (mol) of component
In the case that lubricant oil composite contains (F) component, its content be make whole calcium amounts in lubricant oil composite with It is the amount of below 0.01 mass % when lubricant oil composite total amount is as benchmark.Whole calcium amounts in lubricant oil composite are preferably Below 0.006 mass %.It is below 0.01 mass % by making whole calcium amounts in lubricant oil composite, can further improves Anti-sintered and fatigue life.Although whole calcium amounts in lubricant oil composite can be 0 mass %, from the viewpoint of long-term effect Set out, preferably using lubricant oil composite total amount as benchmark when as more than 0.001 mass %, more preferably for 0.002 mass % with On.
From the viewpoint of the whole calcium amounts made in lubricant oil composite are in above range, with lubricant oil composite total amount During as benchmark, the content of (F) component itself in lubricant oil composite is preferably more than 0.002 mass %, separately with calcium gauge It is preferably below 0.01 mass % outside.
＜ (G) aliphatic amide compounds ＞
In one preferred embodiment, lubricant oil composite of the invention can also further contain aliphatic amide Compound (hereinafter sometimes referred to " (G) component ".).(G) component plays a role as ashless friction regulator.(G) component can To be used alone a kind, two or more can also be applied in combination.
As (G) component, aliphatic acid and the condensation product of ammonia or aliphatic amine compound can be preferably used as Aliphatic amide compound.Carbon number as the aliphatic acid of the raw material of aliphatic amide compound is usually 10~30, excellent Elect more than 12 as, be more preferably more than 13, more preferably more than 16, it is additionally preferred to be less than 26, be more preferably less than 24.Fat In the case that the carbon number of acid is less than 10, lacks friction adjustment effect, in the case that in addition carbon number is more than 30, there is lubrication The worry that the low-temperature viscosity profiles of fluid composition deteriorate.The alkyl combined with the carboxyl of aliphatic acid can be alkyl or Alkenyl.Aliphatic acid is preferably the aliphatic acid of side chain.In one preferred embodiment, as (G) component, can use have The aliphatic amide compound of the alkyl or alkenyl of the straight chain of carbon number more than 12.The fatty acid amide compound can have " alkyl or alkenyl of the straight chain of carbon number more than 12 " combined with carbonyl, it is possible to have combined with the nitrogen-atoms of amido link " alkyl or alkenyl of the straight chain of carbon number more than 12 ", can also have both.
Aliphatic amine as the raw material of aliphatic amide compound can be in ammonia, Armeen, secondary aliphatic amine Any number of, preferred aliphat primary amine.As the example of Armeen, monoalkylamine, monoalkanolamine can be enumerated, with sub- second Base diamines is the diamines of representative, using diethylenetriamines as aliphatic polyamine of representative etc..Particularly preferred aliphatic among these Polyamines.
As the example of the preferable aliphatic amide compound of (G) component, can enumerate selected from laurate, myristic acid, Palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, leukotrienes, arachidic acid, behenic acids, lignoceric acid aliphatic acid or these Mixture and ammonia or aliphatic amine (such as, methylamine, ethamine, monoethanolamine, ethylene diamine, diethylenetriamines, triethylene Tetramine, tetren, penten etc..) or these mixture condensation reaction product.As described above, fat Fat race amine can have " alkyl or alkenyl of the straight chain of carbon number more than 12 ".Aliphatic amide compound can be primary acyl It is any number of in amine, secondary amide, teritary amide, it can particularly preferably use aliphatic acid and aliphatic as carbon number 16~24 The secondary and/or teritary amide of the condensation product of polyamines.
In the case that lubricant oil composite contains (G) component, when its content is using lubricant oil composite total amount as benchmark as 0.3~1.0 mass %.Content by making (G) component is more than 0.3 mass %, can further improve fatigue life and wet The preventing property of displacement of formula clutch.Additionally by making the content of (G) component be below 1.0 mass %, can further improve same Walk the net synchronization capability of device ring.
＜ (H) ashless dispersants ＞
In one preferred embodiment, lubricant oil composite further can contain ashless dispersant (below sometimes Referred to as " (H) component ".).
As (H) component, more than a kind of compound being selected from following (H-1)~(H-3) can be used.
(H-1) succinimide with least one alkyl or alkenyl or derivatives thereof is (following to be sometimes referred to as in the molecule For " (H-1) component ".),
(H-2) there is benzylamine of at least one alkyl or alkenyl or derivatives thereof (hereinafter sometimes referred to " (H- in the molecule 2) component ".),
(H-3) there is polyamines of at least one alkyl or alkenyl or derivatives thereof (hereinafter sometimes referred to " (H- in the molecule 3) component ".).
As (H) component, (H-1) component can be particularly preferably used.
(H-1) among component, as the succinimide in the molecule with least one alkyl or alkenyl, can illustrate Compound shown in the following general formula (10) or (11).
In formula (10), R10Represent the alkyl or alkenyl of carbon number 40~400, f represents 1~5, preferably 2~4 integer. R10Carbon number be preferably more than 60, it is additionally preferred to be less than 350.
In formula (11), R11And R12Separately represent the alkyl or alkenyl of carbon number 40~400, can be different The combination of group.R11And R12It is particularly preferably polybutylene-based.In addition, g represents 0~4, preferably 1~3 integer.R11And R12Carbon Atomicity is preferably more than 60, it is additionally preferred to is less than 350.
Pass through the R in formula (10) and formula (11)10~R12Carbon number for more than above-mentioned lower limit, phase can be obtained For the good solubility of lubricant base.On the other hand, by making R10~R12Carbon number for below above-mentioned upper limit value, The low temperature flow of lubricant oil composite can be improved.
Alkyl or alkenyl (R in formula (10) and formula (11)10~R12) can be that straight-chain can also be branched, preferably The branch of the copolymerized oligomer of the oligomer for example originating from alkene such as propylene, 1- butylene, isobutenes, ethene and propylene can be enumerated Chain-like alkyl, branched alkenyl.It is wherein preferred to be derived from the isobutyl for being known as polyisobutene (polyisobutylene) by custom The branched-chain alkyl or alkenyl or polybutylene-based of the oligomer of alkene (isobutene).
Alkyl or alkenyl (R in formula (10) and formula (11)10~R12) suitable number-average molecular weight be 800~3500.
The succinimide with least one alkyl or alkenyl includes in the molecule：Only add in an end of polyamines chain The succinimide of so-called monotype into obtained from there is succinic anhydride, shown in formula (10) and two terminal additions in polyamines chain There is the succinimide of the so-called dimorphism shown in succinic anhydride, formula (11).Lubricant oil composite can the amber containing monotype It is any number of in the succinimide of acid imide and dimorphism, both can also be contained as mixture.
The preparation method of the succinimide with least one alkyl or alkenyl is not particularly limited in the molecule, for example, can The compound of alkyl or alkenyl with carbon number 40~400 and maleic anhydride are reacted to obtain alkane at 100~200 DEG C Base butanedioic acid or alkenyl succinic acid, so as to get alkyl succinic acid or alkenyl succinic acid and polyamines react, thus obtain in molecule In have at least one alkyl or alkenyl succinimide.Here, as polyamines, diethylenetriamines, Sanya second can be illustrated Urotropine, tetren and penten.
Among (H-2) component, as the benzylamine in the molecule with least one alkyl or alkenyl, it can illustrate following Compound shown in general formula (12).
In formula (12), R13Represent the alkyl or alkenyl of carbon number 40~400, h represents 1~5, preferably 2~4 integer. R13Carbon number be preferably more than 60, it is additionally preferred to be less than 350.
(H-2) preparation method of component is not particularly limited.Following methods can be enumerated：Such as by propylene oligomer, polybutene Or after the polyolefin such as ethene-alpha-olefin copolymer and phenol reactant obtain alkylphenol, by it with formaldehyde, diethylenetriamines, The polyamines such as trien, tetren, penten are reacted by Mannich reaction.
(H-3) among component, as the polyamines in the molecule with least one alkyl or alkenyl, following formula can be illustrated (13) compound shown in.
R14-NH-(CH2CH2NH)i-H (13)
In formula (13), R14Represent the alkyl or alkenyl of carbon number 40~400, i represents 1~5, preferably 2~4 integer. R14Carbon number be preferably more than 60, it is additionally preferred to be less than 350.
(H-3) preparation method of component is not particularly limited.The following method can be enumerated：Such as by propylene oligomer, poly- fourth After the polyolefin chlorination such as alkene or ethene-alpha-olefin copolymer, make itself and ammonia, ethylene diamine, diethylenetriamines, triethylene The polyamines such as tetramine, tetren, penten react.
As the derivative in (H-1) component~(H-3) component, such as can enumerate：(i) make it is above-mentioned in the molecule Succinimide, benzylamine or polyamines (hereinafter referred to as " above-mentioned nitrogenous compound " with least one alkyl or alkenyl.) and fat Polycarboxylic acid (such as oxalic acid, phthalic acid, the inclined benzene of the monocarboxylic acid of the carbon number 1~30 of fat acid etc., carbon number 2~30 Tricarboxylic acid, pyromellitic acid etc..), these acid anhydrides or ester compounds, the oxyalkylene of carbon number 2~6 or hydroxyl (poly-) oxygen Alkylene carbonate has an effect, thus will be in the one or all of remaining amino and/or imino group and/or amidated, sharp With the modified compound of oxygen-containing organic compound；(ii) above-mentioned nitrogenous compound is had an effect with boric acid, thus will remain Amino and/or imino group one or all in and/or amidated, boron modification compound；(iii) above-mentioned nitrogen is made Compound and phosphoric acid has an effect, thus by the one or all of remaining amino and/or imino group and/or amidated, phosphoric acid Modified compound；(iv) make above-mentioned nitrogenous compound and sulphur compound have an effect obtained from, sulphur modified compound；With (v) above-mentioned nitrogenous compound is applied in combination to be selected from and is changed using the modification of oxygen-containing organic compound progress, boron modification, phosphoric acid Modified compound obtained from modification of more than two kinds in property, sulphur modification.Among the derivative of these (i)~(v), from can Set out in terms of the heat resistance for further improving lubricant oil composite, preferably using the boron modification compound of (H-1) component.
(H) molecular weight of component is not particularly limited, and suitable weight average molecular weight is 1000~20000.
In the case that lubricant oil composite contains (H) component, when its content is using lubricant oil composite total amount as benchmark, with Azotometer is preferably 0.01~0.20 mass %, is more preferably more than 0.05 mass %, in addition more preferably for 0.10 mass % with Under.By making the content of (H) component to be more than above-mentioned lower limit, it is possible to increase the anti-scorch of lubricant oil composite is (heat-resisting Property).Additionally by the content of (H) component is made for below above-mentioned upper limit value, fuel consumption conservation performance can be further improved.
In the case of boron modification compound being used as (H) component, the boron amount from (H) component in lubricant oil composite Preferably 0.001~0.05 mass % during using lubricant oil composite total amount as benchmark, is more preferably more than 0.005 mass %, In addition more preferably it is below 0.03 mass %., can be into one by making the Boron contents from (H) component for below above-mentioned upper limit value Step improves fuel consumption conservation performance.
＜ others additives ＞
In one embodiment, lubricant oil composite can further contain and be selected from beyond (B), (C) and (D) component Wear the pour point depressant beyond preventing agent or extreme pressure agent, antioxidant, (E) component, the anticorrosive beyond (B) component, prevent More than a kind in the nonactive agent of metal, defoamer, anti emulsifier and colouring agent beyond rust agent, (B) component.
As the abrasion preventing agent or extreme pressure agent beyond (B), (C), (D) component, disulfides, vulcanization alkene can be enumerated Chalcogenide compounds such as hydro carbons, vulcanization grease type etc..Lubricant oil composite contains the abrasion preventing agent beyond (B), (C), (D) component Or in the case of extreme pressure agent, usually 0.01~5 mass % when its content is using lubricant oil composite total amount as benchmark.
As antioxidant, it is anti-oxidant that the metal systems such as the ashless antioxidants such as phenol system, amine system, copper system, molybdenum system can be enumerated Agent.Specifically, for example, as phenol system ashless antioxidant, 4 can be enumerated, 4 '-di-2-ethylhexylphosphine oxide (2,6- di-tert-butyls Phenol), 4,4 '-bis- (2,6- DI-tert-butylphenol compounds) etc., as amine system ashless antioxidant, phenyl-alpha-naphthyl can be enumerated Amine, alkyl phenyl-Alpha-Naphthyl amine, dialkyl group diphenylamine etc..In the case that lubricant oil composite contains antioxidant, it contains Usually 0.01~5 mass % when amount is using lubricant oil composite total amount as benchmark.
As the pour point depressant beyond (E) component, according to the character of used lubricant base, such as can use Pour point depressant known to polymethacrylates system polymer etc..In the case that lubricant oil composite contains pour point depressant, Usually 0.05~1 mass % when its content is using lubricant oil composite total amount as benchmark.
As the anticorrosive beyond (B) component, such as enumerate BTA system, tolytriazole system and imidazoles system can be used Anticorrosive known to compound etc..In the case that lubricant oil composite contains the anticorrosive beyond (E) component, its content is to moisten Usually 0.005~5 mass % when sliding oil composition total amount is as benchmark.
As antirust agent, such as petroleum sulfonate, alkyl benzene sulfonic acid ester, dinonylnaphthalene sulfonic acid ester, alkenyl amber can be used Antirust agent known to amber acid esters and polyol ester etc..In the case that lubricant oil composite contains antirust agent, its content is with lubricating oil Usually 0.005~5 mass % when total composition is as benchmark.
As the nonactive agent of metal beyond (B) component, such as imidazoline, pyrimidine derivatives, sulfydryl benzene can be used And known in thiazole, benzotriazole and its derivative, 2- (two sulphur of alkyl) benzimidazoles and β-(adjacent carboxybenzyl sulphur) propionitrile etc. The nonactive agent of metal.In the case that lubricant oil composite contains the nonactive agent of metal beyond (E) component, its content with Usually 0.005~1 mass % when lubricant oil composite total amount is as benchmark.
As defoamer, such as defoamer known to silicone, fluorosilicone and fluoroalkyl ether etc. can be used.Lubricating oil composition In the case that thing contains defoamer, usually 0.0005~1 mass % when its content is using lubricant oil composite total amount as benchmark.
As anti emulsifier, such as anti-breast known to polyalkylene glycol system nonionic surfactants etc. can be used Agent.It is usual when its content is using lubricant oil composite total amount as benchmark in the case that lubricant oil composite contains anti emulsifier For 0.005~5 mass %.
As colouring agent, such as colouring agent known to azo-compound etc. can be used.
＜ lubricant oil composites ＞
Kinematic viscosity of the lubricant oil composite at 40 DEG C is 25mm2/ below s.In addition it is preferably 10mm2/ more than s, it is more excellent Elect 15mm as2/ more than s, more preferably 20mm2/ more than s.By making kinematic viscosity of the lubricant oil composite at 40 DEG C be 25mm2/ below s, it is possible to increase fuel consumption conservation performance.Additionally by making kinematic viscosity of the lubricant oil composite at 40 DEG C be upper State more than lower limit, the formation of oil film at lubrication can be made abundant, easily improve wearability.
Kinematic viscosity of the lubricant oil composite at 100 DEG C is preferably 5.0mm2/ more than s, it is additionally preferred to be 9.0mm2/ s with Under, it is more preferably 8.0mm2/ below s, more preferably 7.0mm2/ below s.By making movement of the lubricant oil composite at 100 DEG C Viscosity is abundant for that more than above-mentioned lower limit, can make the formation of the oil film at lubrication, easily improves wearability.Additionally by making profit Kinematic viscosity of the sliding oil composition at 100 DEG C is below above-mentioned upper limit value, easily improves fuel consumption conservation performance.
The viscosity index (VI) of lubricant oil composite is more than 170.By make the viscosity index (VI) of lubricant oil composite for 170 with On, easily improve fuel consumption conservation performance.The upper limit of the viscosity index (VI) of lubricant oil composite is not particularly limited, be usually 250 with Under.
Whole sulfur content S (units in lubricant oil composite：Quality %) it is (single with whole phosphorus amount P in lubricant oil composite Position：Quality %) mass ratio S/P be preferably less than more than 38.It is more than 3 by making than S/P, can further improves wear-resisting Property, anti-sintered, the conduction torque capacity of fatigue life and wet clutch.It is less than 8, Neng Goujin additionally by making than S/P One step improves wearability, anti-sintered, fatigue life, the preventing property of displacement of wet clutch and the fissility of clutch ring.
Brookfield viscosity (hereinafter sometimes referred to " BF viscosity " of the lubricant oil composite at -40 DEG C.) it is preferably 10, Below 000mPas, is more preferably 9, below 000mPas.By making BF viscosity of the lubricant oil composite at -40 DEG C be 10, below 000mPas, it is possible to increase cold cranking capacity.
(purposes)
The lubricant oil composite of the present invention can be preferred for the fluid drive machine oil of automobile using, can be particularly preferred for The lubrication of automatic speed variator, such as double-clutch speed changer with lazy-tongs.
Embodiment
Hereinafter, based on embodiment and comparative example, more specific description is carried out to the present invention.But the invention is not restricted to this A little embodiments.
1~5 ＞ of ＜ embodiments 1~17 and comparative example
As shown in Table 1 to Table 3, the lubricant oil composite (embodiment 1~17) of the present invention has been modulated respectively and has been compared Lubricant oil composite (comparative example 1~5).In table, the content of base oil be using base oil total amount as benchmark, the content of each additive with Total composition is as benchmark.Component details is as follows.
((A) lubricant base)
A1-1：Wax isomerization base oil (Group III, kinematic viscosity (40 DEG C)：9.072mm2/ s, kinematic viscosity (100 DEG C)： 2.621mm2/ s, viscosity index (VI)：127, sulfur content：Less than 10 mass ppm, %CP：91.8 %CN：8.2, %CA：0)
A1-2：Wax isomerization base oil (Group III, kinematic viscosity (40 DEG C)：15.65mm2/ s, kinematic viscosity (100 DEG C)： 3.883mm2/ s, viscosity index (VI)：142, sulfur content：Less than 10 mass ppm, %CP：92.5 %CN：7.5, %CA：0)
A1-3：Hydrofining mineral oil (Group II, kinematic viscosity (40 DEG C)：12.43mm2/ s, kinematic viscosity (100 ℃)：3.12mm2/ s, viscosity index (VI)：112, sulfur content：Less than 10 mass ppm)
A1-4：Hydrofining mineral oil (Group III, kinematic viscosity (40 DEG C)：19.57mm2/ s, kinematic viscosity (100 ℃)：4.23mm2/ s, viscosity index (VI)：122, sulfur content：Less than 10 mass ppm, %CP：80.7 %CN：19.3 %CA：0)
A1-5：Poly alpha olefin (Group IV, kinematic viscosity (40 DEG C)：5mm2/ s, kinematic viscosity (100 DEG C)：1.7mm2/ s, Viscosity index (VI)：91, pour point：- 66 DEG C, flash-point：157℃)
A1-6：Poly alpha olefin (Group IV, kinematic viscosity (40 DEG C)：19mm2/ s, kinematic viscosity (100 DEG C)：4.1mm2/ s, Viscosity index (VI)：126, pour point：- 66 DEG C, flash-point：220)
A2-1：Diester base oil (Group V, azelaic acid 2- ethylhexyls, kinematic viscosity (40 DEG C)：10.3mm2/ s, movement Viscosity (100 DEG C)：2.9mm2/ s, viscosity index (VI)：138, pour point：- 72 DEG C, flash-point：220℃)
A2-2：Monoesters base oil (Group V, oleic acid 2- ethylhexyls, kinematic viscosity (40 DEG C)：8.4mm2/ s, kinematic viscosity (100℃)：2.7mm2/ s, viscosity index (VI)：174, pour point：- 40 DEG C, flash-point：224℃)
((B) thiadiazole compound)
B-1：The thiadiazole compound with alkyl disulfide group shown in general formula (1), S：36 mass %
((C) phosphorous friction regulator)
C-1：The acidic phosphite of alkyl or alkenyl with carbon number 18, P：5.8 mass %
C-2：The amine salt of the acidic phosphite of alkyl or alkenyl with carbon number 18, P：2.45 quality %
((E) poly- (methyl) acrylate)
E-1：Non-dispersive type polymethacrylates, weight average molecular weight：20,000
E-2：Decentralized polymethacrylates, weight average molecular weight：40,000
E-3：Decentralized polymethacrylates, weight average molecular weight：150,000
((F) calcium system detergent)
F-1：Sulfonic acid Ca, base number 300mgKOH/g, Ca：12.2 quality %
((G) aliphatic amide compound)
G-1：The condensation product of aliphatic acid and aliphatic polyamine, carbon number 46~80, N：6.2 mass %
(phosphor-included additive and (H) ashless dispersant beyond (D) above-mentioned (C) component)
Additive packing：AFTON CHEMICAL company systems Hitec (registration mark) 403J, B：0.24 mass %, N： 1.55 mass %, P：0.51 mass %, S：2.23 quality %
(other additives)
Swell rubber agent：Sulfur-bearing swell rubber agent, S：11.6 quality %
Defoamer：Dimethyl silscone
[table 1]
[table 2]
[table 3]
(low-temperature viscosity profiles)
For each lubricant oil composite, Brookfield viscometer, viscosity (BF viscosity) of the measure oil temperature at -40 DEG C are used.Will The results are shown in table 1~3.Show that the BF viscosity at -40 DEG C is lower, cold cranking capacity is the better.BF viscosity at -40 DEG C Preferably below 10,000mPas.
(shear stability test)
For each lubricant oil composite, tested, have rated by the shear stable degree carried out based on JPI-5S-29-88 The shear stability of lubricant oil composite.For sample oil from ticker irradiation frequency be 10kHz, the amplitude of ticker be 28 μm Ultrasonic wave 2 it is small when, before calculating kinematic viscosity of the sample oil after ultrasonic irradiation at 100 DEG C relative to ultrasonic irradiation The reduced rate (%) of kinematic viscosity of the sample oil at 100 DEG C.Show the result in table 1~3.Show that the reduced rate of kinematic viscosity is got over Low, shear stability is higher and durability is the better.The reduced rate of kinematic viscosity in this experiment is preferably less than 2.0%.
(high speed four-ball test)
For each lubricant oil composite, by the high speed four-ball test carried out based on JPI-5S-40-93, profit have rated The resistance to lifting capacity and wearability of sliding oil composition.
(1) the final non-sintered load-carrying (LNSL) in rotating speed 1800rpm is determined.
(2) the friction marks footpath after in rotating speed 1200rpm, load-carrying 392N, 80 DEG C of oil temperature operating 30 minutes is determined.
Show the result in table 1~3.Show that LNSL is higher, anti-sintered (resistance to lifting capacity) is the better, shows friction marks footpath Smaller, wearability is the better.LNSL in this experiment is preferably more than 618N, and friction marks footpath is preferably below 0.60mm.
(FALEX sintering tests)
For each lubricant oil composite, by the FALEX sintering tests carried out based on ASTM D3233, gear oil have rated The resistance to lifting capacity of composition.Under conditions of 110 DEG C of oil temperature, make the pin of steel clamped by the V-block of 2 static steels Rotated with 290rpm, measure the load-carrying sintered.Show the result in table 1~3.Show that the load-carrying that sinters is bigger, Anti-sintered (resistance to lifting capacity) is the better.The resistance to lifting capacity measured in this experiment is preferably more than 4400N.
(UNISTEEL experiments)
For each lubricant oil composite, rotating fatigue tester using UNISTEEL, (Co., Ltd.'s Tokyo test system 3 connects Formula high temperature rotates fatigue tester TRF-1000/3-01H), (institute of petroleum in britain's method is tested by UNISTEEL：IP305/ 79) the rotation fatigue life of thrust bearing is determined.For by the side of needle roller thrust bearing (NSK FNTA-2542C) Rail wheel is replaced into flat test film (material：SUJ2 the test bearing) formed, in load-carrying 7000N, face pressure 2GPa, rotating speed Under conditions of 1450rpm, 120 DEG C of oil temperature, any side of rolling member or test film is determined until the time of fatigue damage.Need Illustrate, the vibration that the experiment portion for the vibration acceleration meter measure that fatigue tester possesses is rotated by UNISTEEL accelerates Degree reaches 1.5m/s2When, it is determined as that there occurs fatigue damage.From in the experiment of the repetitions of 10 times up to the time of fatigue damage, Fatigue life is calculated by Weibull chart and is used as 50% service life (L50：Cumulative probability becomes for 50% time).Show the result in Table 1~3.Show that 50% service life for being measured in this experiment is longer, more can preferably improve the fatigue life of gear, bearing. The fatigue life (50% service life) measured in this experiment is preferably more than 1100 minutes.
(SAE No.2 friction tests)
For each lubricant oil composite, using SAE No.2 testing machines (refreshing steel makes mechanism), based on JASO M348：2002 Dynamic friction experiment is carried out, determines the coefficient of kinetic friction μ between friction plate and steel platedAnd μ0, calculated and compared μ0/μd。
Show the result in table 1~3.Show the coefficient of kinetic friction μ measured in this experimentdIt is bigger, wet clutch it is tight Solidity can be the better, that is, shows that the conduction torque capacity of wet clutch is bigger.In addition show to compare μ0/μdIt is smaller, wet clutch Preventing property of displacement it is the better.The coefficient of kinetic friction μ measured in this experimentdPreferably more than 0.125, compare μ0/μdPreferably 0.95 Below.
(clutch ring monomer assays)
For each lubricant oil composite, using clutch ring monomer friction test device (refreshing steel makes mechanism), Huang is determined The coefficient of kinetic friction and slip torque (stick torque) shown in copper clutch ring.
Clutch ring monomer assays machine has the clutch ring and the cone of gears being arranged on coaxial, and clutch ring is in direction of principal axis It is kept in a manner of movable, the cone of gears is so as to the mode of rotation driving is kept.
The measure operation of the coefficient of kinetic friction is as follows.In lubricating oil (60 DEG C of oil temperature), revolved to egulation rotating speed (300rpm) Steel gear cone (the inertia mass 0.16kgm turned2), by brass clutch ring (6.3 ° of cone angle, effective radius 27mm) With in prescribed load (500N) pressure.Pulled open in pressure after 0.2 second 2.0 seconds, in this, as 1 circulation, friction when being circulated by the 500th Moment of torsion calculates the coefficient of kinetic friction.
The measure operation of slip torque is as follows.First, in the same manner as the operation of the said determination of the coefficient of kinetic friction, by first The upper clutch ring of cone of gears pressure that beginning speed 300rpm is rotated freely makes it stop rotating.When rotation stops, clutch ring It is attached to the state of the cone of gears.Next, in the state of load-carrying is not applied to clutch ring, make the cone of gears with defined turn Fast (300rpm) rotation, measure clutch ring from other side's component peel off when moment of torsion (slip torque).Measured value is using 10 surveys Maximum in fixed.
Show the result in table 1~3.Show that the coefficient of kinetic friction of this experiment measure is bigger, the net synchronization capability of clutch ring is got over Well.In addition show that the slip torque of this experiment measure is smaller, the fissility of clutch ring is the better.What is measured in this experiment is dynamic Friction coefficient is preferably more than 0.140, and slip torque is preferably less than 10, and particularly preferably less than 5.
(evaluation result)
The lubricant oil composite of embodiment 1~17 shows good result in whole assessment items.
Kinematic viscosity and viscosity index (VI) of the composition at 40 DEG C are the composition of the comparative example 1 outside the scope of the present invention Low-temperature viscosity profiles are poor.
Without (B) component (thiadiazole compound), composition S/P than too small comparative example 2 composition at a high speed four Friction marks footpath (wearability), FALEX sintering tests (resistance to lifting capacity) and UNISTEEL experiments (fatigue life) in ball test In show difference result.
Without (C) component (phosphorous friction regulator), composition S/P than excessive comparative example 3 composition at a high speed Friction marks footpath (wearability), FALEX sintering tests (resistance to lifting capacity), UNISTEEL experiments (fatigue life) in four-ball test With the μ of SAE No.2 friction tests0/μdThan the result that difference is shown in (the preventing property of displacement of wet clutch).
Friction marks footpath of the composition without (B) component and the comparative example 4 of (C) component in high speed four-ball test is (wear-resisting Property), FALEX sintering tests (resistance to lifting capacity), UNISTEEL experiment (fatigue life), clutch ring monomer assays dynamic friction The result of difference is shown in coefficient (net synchronization capability of clutch ring) and slip torque (fissility of clutch ring).
(E) composition of the excessive comparative example 5 of the weight average molecular weight of component (poly- (methyl) acrylate) is in shear stable Property experiment, FALEX sintering tests (resistance to lifting capacity) and UNISTEEL experiments (fatigue life) in show poor result.

Claims (7)

1. a kind of lubricating oil composition for automatic transmission with lazy-tongs, it is characterised in that contain：
(A) lubricant base, it is base oil or their mixing for more than a kind of mineral oil system base oil or more than a kind of synthesis Thing；
(B) thiadiazole compound；
(C) the phosphorous friction regulator of the alkyl or alkenyl of the straight chain with carbon number more than 12, it is total with lubricant oil composite When amount is used as benchmark, the content of the phosphorous friction regulator is more than 0.1 mass %；
(D) phosphor-included additive beyond described (C) component, the content of the phosphor-included additive is the whole made in lubricant oil composite As the amount of more than 0.04 mass % when phosphorus amount is using lubricant oil composite total amount as benchmark；With
(E) weight average molecular weight is 50, less than 000 poly- (methyl) acrylate,
Kinematic viscosity of the lubricant oil composite at 40 DEG C is 25mm2/ below s, viscosity index (VI) is more than 170, with lubricating oil composition When thing total amount is as benchmark, whole sulfur contents in lubricant oil composite are more than 0.20 mass %.
2. lubricant oil composite as claimed in claim 1, it is characterised in that：
Kinematic viscosity of (A) lubricant base at 100 DEG C is 3.3mm2/ below s.
3. lubricant oil composite as claimed in claim 1 or 2, it is characterised in that：
In (A) lubricant base, during using lubricant base total amount as benchmark, comprising 99 mass % of more than 70 mass % with Under (A1) API classification Group II base oil, Group III base oil and/or Group IV base oil.
4. such as lubricant oil composite according to any one of claims 1 to 3, it is characterised in that：
In (A) lubricant base, during using lubricant base total amount as benchmark, comprising 30 mass % of more than 1 mass % with Under (A2) kinematic viscosity at 100 DEG C be 3mm2/ below s, viscosity index (VI) are more than 130, flash-point is more than 200 DEG C, inclines Point is oily for less than -30 DEG C of ester group.
5. such as lubricant oil composite according to any one of claims 1 to 4, it is characterised in that：
The ratio between whole sulfur content S and whole phosphorus amount P in lubricant oil composite in lubricant oil composite S/P is less than more than 38.
6. such as lubricant oil composite according to any one of claims 1 to 5, it is characterised in that：
The lubricant oil composite contains (F) calcium system detergent, the content of the calcium system detergent be make it is complete in lubricant oil composite As the amount of below 0.01 mass % when portion's calcium amount is using lubricant oil composite total amount as benchmark.
7. such as lubricant oil composite according to any one of claims 1 to 6, it is characterised in that：
The lubricant oil composite contains the aliphatic amide chemical combination of the alkyl or alkenyl of the straight chain of (G) with carbon number more than 12 Thing, during using lubricant oil composite total amount as benchmark, the content of the aliphatic amide compound is 1.0 matter of more than 0.3 mass % Measure below %.
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