CN100448964C - Transmission liquid composition for stepless speed gear - Google Patents
Transmission liquid composition for stepless speed gear Download PDFInfo
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Abstract
The invention provides a stepless variable device transmission fluide compound. It comprises following components with their percentage on base oil weight: (1) bicyclo alicyclic hydrocarbon base oil, (2) alkali metal salt detersive, 0.05- 3%, (3) ashless dispersant 1- 15%, (4) phenol or amine anti- oxidant, 0.01- 1%, (5) antiwear agent, 0.05- 2%, (6) friction improver. 0.05- 3%, (7) viscosity index improver, 0-20%, (8) antifoam agent, 0- 1000ppm. The transmission fluide is characterized by good viscosity-temperature characteristic and low- temperature flowability, high drag coefficient at normal temperature, good comprehensive performance, and satification for CVT use requirement.
Description
Technical field
The present invention relates to a kind of lubricating oil composition, particularly, what the present invention relates to is the special-purpose transmission liquid composition of CVT of the excellent property of a kind of high viscosity index (HVI), high drag coefficient.
Technical background
In recent years, improve fuel economy, reduce discharging, improve the development trend that yarage becomes the automobile development, and stepless speed variator of vehicle (being called for short CVT) technology is exactly wherein the most promising a kind of.Automobile-used CVT common type has: belt CVT (Belt/Chain-CVT, B-CVT) and ring-like CVT (Torodial-CVT, T-CVT).The CVT technology is remarkable in aspect advantages such as fuel economy, the accelerating ability of overtaking other vehicles, riding comfort, costs.Therefore automatic gearbox more and more adopts the CVT design.
The transmission of CVT power is actually that the shearing force that relies on oil film in elastohydrodynamic lubrication (EHL) zone of action finishes, and therefore, the quality of mechanical stepless transmission performance depends on the hauling ability of traction fluid (CVTF) to a great extent.CVTF is a kind of multi-functional traction transmission fluid.In buncher force transfer element zone of action, oil-bound film bears high pressure, high-shear strain rate, is also generated heat owing to shearing simultaneously, thereby oil product is had many particular requirements.CVTF is except that the lubricated high low temperature viscosity requirement that plain oil had, oxidation-stabilized performance, dispersiveness, anti-bubble property, material compatibility, also shear stable performance, wear resistance there is strict requirement, particularly to drag coefficient and the very high requirement of anti-stick sliding performance.And be conflicting between these performances, as drag coefficient and low temperature viscosity, high low temperature viscosity and shear stability, drag coefficient and wear resistance etc.
The synthesis type transmission fluid can roughly be divided into regard to its molecular structure: (1) many ring greases ring same clan type (many six-rings); (2) synthesis of polyolefins type (high cladodification degree); (3) mineral oil origin; (4) ester class, ethers (containing a plurality of six-rings in the molecular structure); (5) silicone oil type etc.Wherein, the hauling ability of many cyclohexyl alicyclic ring same clan traction fluid is good, and particularly the high temperature drag coefficient is higher, so obtained to use widely.US 5043497 discloses the synthetic of two (3,4, the 6-trimethylcyclohexyl) methane transmission fluids.US 3975278 discloses 2-methyl-2,4-dicyclohexyl pentane transmission fluid synthetic.Japan has also proposed a large amount of patents of invention around this type of molecular structure in addition, as JP2001294880, and JP11349968 etc., wherein disclosed transmission fluid has the common general structure:
Difference is in the difference of methylene radical number of hexamethylene interannular and the difference of the connecting mode between the methylene radical; In addition, short-chain alkyl R on the hexamethylene ring
1, R
2Type, quantity also have nothing in common with each other.
Except to the research of base oil and novel foundation oil synthetic, people have also carried out a large amount of research to the CVTF prescription.The open 2000-63878 of special permission, the open 2000-1687 of special permission, special permission discloses flat 11-293272, special permission discloses flat 11-181464, special permission discloses flat 9-263782, US 6809069, US 6746993, US6465399, and US 6337309, US 6329327, patents such as US 6225266 have provided has added viscosity index improver, purification agent, dispersion agent, multiple additives such as friction improver be the CVTF prescription of base oil with the Dormant oils, these CVTF have higher drag coefficient, the drag coefficient under the room temperature is up to about 0.07, can be used for B-CVT, but its drag coefficient is difficult to satisfy the service requirements of T-CVT.JP2000239682, JP62001115178, JP2001019988, patents such as JP2000169866 have provided with 1-cyclohexyl-1,3,3-trimethylammonium dihydro indane, 2,4-dicyclohexyl-hydrogenation two polyvinyltoluene synthetic oils such as 2-methyl-pentane are the CVTF prescription of base oil, these CVTF have the higher drag coefficient than Dormant oils type CVTF, and the drag coefficient under the room temperature is up to about 0.12, can satisfy the service requirements of T-CVT.Comparatively successful commercial transmission fluid also mostly is many hexamethylenes lopps alicyclic hydrocarbon, as Santotrac series product etc.These traction fluids generally all have drag coefficient preferably, but their low temperature flowability, and working conditions under viscosity have nothing in common with each other the particular requirement that can't satisfy stepless gearbox that has.Particularly between drag coefficient and low-temperature fluidity, exist contradiction, occur when high drag coefficient often is accompanied by high viscosity, high pour point.
Summary of the invention
The invention provides possess high viscosity index, high drag coefficient, good low-temperature fluidity, the stepless gearbox transmission liquid composition of normal viscosity characteristics.
Stepless gearbox transmission liquid composition provided by the invention is 100% in the weight of base oil, comprising:
(1) the own lopps alicyclic hydrocarbon of dicyclo basis oil;
(2) alkaline earth salt purification agent, content are 0.05～3 heavy %;
(3) ashless dispersant, content are 1～15 heavy %;
(4) phenol type or amine type oxidation inhibitor, content are 0.01～1 heavy %;
(5) anti-wear agent, content are 0.05～2 heavy %;
(6) friction improver, content are 0.05～3 heavy %;
(7) viscosity index improver, content are 0～20 heavy %;
(8) kilfoam, content are 0～1000ppm.
The alkaline earth salt purification agent is one or more in sulfonate, alkyl monosulfide phenates and the alkylsalicylate of alkaline-earth metal.Alkaline-earth metal wherein is calcium, magnesium or barium.The base number of alkaline earth salt can be high base number (＞300TBN), middle base number (100～300TBN) and low alkali value (＜100TBN).Preferred alkaline earth salt purification agent is middle base number calcium sulfenyl phenolate and SULFURIZED CALCIUM ALKYL PHENATE WITH HIGH BASE NUMBER.The content of purification agent is 0.05～3 heavy %, is preferably in 0.5～2 heavy %.
Ashless dispersant is succimide dispersion agent, succinate dispersion agent, oil soluble is phosphorous or the ashless dispersant of boracic in one or more.Preferably boronation ashless dispersant and succimide dispersion agent.The content of ashless dispersant is 1～15 heavy %, is preferably in 3～6 heavy %.
Oxidation inhibitor is one or more in phenol type or the amine type oxidation inhibitor, preferably amine type oxidation inhibitor.The content of oxidation inhibitor is 0.01～1 heavy %, is preferably in 0.1～0.8 heavy %.
Anti-wear agent is one or more in alkyl zinc dithiophosphate, benzyl disulfide thing, sulfide isobutene, tritolyl phosphate, the boronation oleylamide.Preferably benzyl disulfide thing and alkyl zinc dithiophosphate.The content of anti-wear agent is 0.05～2 heavy %, is preferably in 0.1～1 heavy %.
Friction improver is one or more in 124 Triazole fatty acid ammonium salt (T406), oleic acid glycol ester (T403), sulfurized olefin cotton oil (T405), trioctyl phosphate, oleic acid, laurylamide diethanolamine, hydroxyethyl heptadecyl tetrahydroglyoxaline, the ethoxylation ox ester diamines.The combination of preferably 124 Triazole fatty acid ammonium salt (T406), or hydroxyethyl heptadecyl tetrahydroglyoxaline and ethoxylation tallow diamines, in the combination, both ratios are 1: 1～5: 1, preferred 1: 1～3: 1.The content of friction improver is 0.05～3 heavy %, is preferably in 0.1～1 heavy %.
Viscosity index improver is one or more in polymethacrylate, ethylene-propylene copolymer, polyvinyl n-butyl ether, polyisobutene, the styrene maleic acid ester.Preferably use the polymethacrylate of molecular weight in 10000～100000 scope.The content of viscosity index improver can be 0～20 heavy %, preferred 1～20 heavy %, preferably 1～10 heavy %.
Kilfoam is one or more of methyl-silicone oil, ethyl silicon oil, CALCIUM ACRYLATE and ether copolymer (T911, T912).T912 preferably, content can be 0～1000ppm, preferred 50～1000ppm, preferably 100～500ppm.
Said base oil is the own lopps alicyclic hydrocarbon of dicyclo, preferred is the own lopps alicyclic hydrocarbon of a kind of novel texture dicyclo, its 2 cyclohexyl are connected by 1 methylene radical, and 1～3 short-chain alkyl substituted radical that contains together with position dimethyl structure is all arranged, on each hexamethylene ring as sec.-propyl, the tertiary butyl, isopentyl etc.Its structural formula is:
Wherein R is the C3～C5 short-chain alkyl that contains together with position dimethyl structure, and n is 1～3 positive integer.
The alicyclic preparation of the own lopps of said dicyclo can be divided into for two steps: promptly the hydrogenation synthetic and fragrant intermediate of fragrant intermediate is saturated.
(1) fragrant intermediate is synthetic
With the C1～C3 alkylbenzene, the formaldehyde that contain together with position dimethyl structure is raw material, under the effect of an acidic catalyst, generates diarylmethanes type fragrance intermediate through condensation reaction.
Catalyzer can be selected the vitriol oil for use, sulfonic acid or heteropolyacid, the preferred vitriol oil.The formaldehyde raw material can be selected Paraformaldehyde 96 or formalin for use, preferred 37% formalin.Temperature of reaction can be 106～130 ℃.
Diarylmethanes type fragrance intermediate general formula is as follows:
Cause a plurality of isomer to exist simultaneously because the difference of alkyl replaces the position, so fragrant intermediate is a mixture in fact, but mixture does not have too big influence to the performance of the finished product.
(2) hydrogenation of fragrant intermediate is saturated
Fragrant intermediate is mixed with hydrogenation catalyst, place in the autoclave, in 150～200 ℃ of temperature, under the condition of hydrogen pressure 5.0～10.0MPa, it is saturated to carry out hydrogenation.Product gets the finished product after head is pulled out in decompression.Said hydrogenation catalyst can be following three major types: 1) group VIII metal (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) and skeleton catayst or the amorphous alloy catalyst made by alloy; 2) metal oxide (MgO, ZnO, Cr
2O
3, Fe
2O
3Deng); 3) composite oxides or sulfide.Above-mentioned substance, particularly metal itself except that skeleton type catalyst, preferably is dispersed on the porous carriers such as gac, molecular sieve, with enhanced activity.
With two (cumyl) methane is that example illustrates the product slate of fragrant intermediate behind hydrogenation.Its finished product consist of two (isopropylcyclohexyl-) methane.Wherein mainly contain following two kinds of isomer:
Two (4-isopropylcyclohexyl-) methane
Because sterically hindered relation, the former content is higher.It is difficult separating said mixture, also is nonsensical for the present invention simultaneously.
Continuously variable transmission fluid composition provided by the invention has good viscosity temperature characteristic and low-temperature fluidity, possesses higher drag coefficient under the normal temperature, and high comprehensive performance can satisfy the service requirements of CVT fully.
Embodiment
(1) Determination of Traction Coefficient
Mini Traction Machine (MTM) instrument that the mensuration of traction curve uses Britain PCS Instruments company to produce, its how much contacting patterns are ball-dish-type.Test conditions and test specimen parameter see Table 1, table 2.
Table 1 hauling ability test conditions
| Test specimen | Contact area | Hertz pressure (GPa) | Sliding rolling than (%) | Rolling speed (m/s) | Temperature (℃) | Sample volume (ml) |
| Ball-dish | Oval | 0.75～1.25 | -10～+10 | 2.5 | 40 | 40 |
Table 2 test specimen parameter
| Title | Material | Diameter (mm) | Hardness (HRC) | Smooth finish (μ m) | Contact radius (mm) | Young's modulus (10 11＊N/m 2) |
| Ball | AISI52100 | 19.05 | 63 | 0.02 | Do not have | 2.07 |
| Dish | AISI52100 | 46.0 | 63 | 0.02 | 21.2 | 2.07 |
(2) embodiment
Listed in the embodiment of following each table and comparative example at the composition of implementing to be fit to when of the present invention to use, embodiment and comparative example have adopted identical additive combination, and percentage ratio wherein all represents with weight, are 100% with the weight of base oil.
Base oil I: two (4-isopropylcyclohexyl-) methane, according to the method preparation of embodiment 1.
Base oil II: two (4-tert-butylcyclohexyl) methane, according to the method preparation of embodiment 2.
Base oil III: two (3,4, the 6-trimethylcyclohexyl) methane, synthetic according to US 5043497.
Base oil IV:2-methyl-2,4-dicyclohexyl pentane, synthetic according to US 3975278.
Embodiment 1
Get isopropyl benzene (purity 99w%) 240 grams, formaldehyde (37% aqueous solution) 47.8 grams, sulfuric acid (concentration 98w%) 58.2 grams are raw material.Wherein isopropyl benzene, sulfuric acid mix and place four-necked bottle to stir, and are warming up to 120 ℃ by room temperature.After reaching design temperature,, be added dropwise to four-necked bottle slowly with placing the formalin of addition funnel.Formaldehyde dropwises, and insulation reaction is after about 1 hour, and separating funnel is gone in discharging, cuts out the upper oil phase product with about 80 ℃ distilled water, propyl carbinol mixed solution (water: pure volume ratio is about 4: 1) extracting and washing to PH=7.After the oil phase product compiled, after residual voltage was to steam unreacted raw material isopropyl benzene under 24～40mmHg condition, under the condition of residual voltage less than 1mmHg, the decompression fraction of getting 176～186 ℃ was the target midbody product more earlier.
With above-mentioned intermediate---two (cumyl) methane 139.6 restrains, and mixes placing in the autoclave with 10%Pd/C catalyzer 6.5 grams.In 190 ℃ of temperature, hydrogen pressure 7.0MPa, under the condition of stirring velocity 250RPM, it is saturated to carry out hydrogenation.Product gets the finished product 126.2 grams after head is pulled out in decompression,
1It is 98.6% that H-NMR measures the hydrogenation saturation ratio.
13The C-NMR molecular structure is identified and is shown that two (4-isopropylcyclohexyl-) methane is its major ingredient.
Embodiment 2
Building-up process is with embodiment 1, and just raw material is changed to tert.-butylbenzene 268 grams, the mass conservation of the formaldehyde and the vitriol oil.Carry out condensation reaction under 120 ℃, and carry out extracting and separating and underpressure distillation, obtain intermediate altogether---two (trimethylphenylmethane base) methane product 125.5 grams.It is mixed with 10%Pd/C catalyzer 6.7 gram place in the autoclave.In 190 ℃ of temperature, hydrogen pressure 7.0MPa, under the condition of stirring velocity 250RPM, it is saturated to carry out hydrogenation.Product gets the finished product 115.3 grams after head is pulled out in decompression,
1It is 97.3% that H-NMR measures the hydrogenation saturation ratio.
13The C-NMR molecular structure is identified and is shown that two (4-tert-butylcyclohexyl) methane is its major ingredient.
The composition of table 3 embodiment and comparative example
| Component | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 |
| Base oil | Base oil I | Base oil II | Base oil III | Base oil IV |
| Polymethacrylate | 8％ | 8％ | 8％ | 8％ |
| SULFURIZED CALCIUM ALKYL PHENATE WITH HIGH BASE NUMBER | 0.8％ | 0.8％ | 0.8％ | 0.8％ |
| Boronation ashless dispersant | 2％ | 2％ | 2％ | 2％ |
| Amine type oxidation inhibitor | 0.3％ | 0.3％ | 0.3％ | 0.3％ |
| The benzyl disulfide thing | 0.9％ | 0.9％ | 0.9％ | 0.9％ |
| Hydroxyethyl heptadecyl tetrahydroglyoxaline | 0.2％ | 0.2％ | 0.2％ | 0.2％ |
| Ethoxylation tallow diamines | 0.1％ | 0.1％ | 0.1％ | 0.1％ |
| T912 | 200ppm | 200ppm | 200ppm | 200ppm |
The composition of table 3 embodiment and comparative example is continuous
| Component | Embodiment 5 | Embodiment 6 | Comparative example 3 | Comparative example 4 |
| Base oil | Base oil I | Base oil II | Base oil III | Base oil IV |
| Polymethacrylate | 1％ | 1％ | 1％ | 1％ |
| SULFURIZED CALCIUM ALKYL PHENATE WITH HIGH BASE NUMBER | 1.6％ | 1.6％ | 1.6％ | 1.6％ |
| Boronation ashless dispersant | 6％ | 6％ | 6％ | 6％ |
| Amine type oxidation inhibitor | 0.6％ | 0.6％ | 0.6％ | 0.6％ |
| Alkyl zinc dithiophosphate | 0.9％ | 0.9％ | 0.9％ | 0.9％ |
| Hydroxyethyl heptadecyl tetrahydroglyoxaline | 0.2％ | 0.2％ | 0.2％ | 0.2％ |
| Ethoxylation tallow diamines | 0.1％ | 0.1％ | 0.1％ | 0.1％ |
| T912 | 400ppm | 400ppm | 400ppm | 400ppm |
The composition of table 3 embodiment and comparative example is continuous
| Component | Embodiment 7 | Embodiment 8 | Comparative example 5 | Comparative example 6 |
| Base oil | Base oil I | Base oil II | Base oil III | Base oil IV |
| Polymethacrylate | 8％ | 8％ | 8％ | 8％ |
| SULFURIZED CALCIUM ALKYL PHENATE WITH HIGH BASE NUMBER | 0.8％ | 0.8％ | 0.8％ | 0.8％ |
| The succimide dispersion agent | 2％ | 2％ | 2％ | 2％ |
| Amine type oxidation inhibitor | 0.3％ | 0.3％ | 0.3％ | 0.3％ |
| The benzyl disulfide thing | 0.1％ | 0.1％ | 0.1％ | 0.1％ |
| Hydroxyethyl heptadecyl tetrahydroglyoxaline | 0.2％ | 0.2％ | 0.2％ | 0.2％ |
| Ethoxylation tallow diamines | 0.1％ | 0.1％ | 0.1％ | 0.1％ |
| T912 | 200ppm | 200ppm | 200ppm | 200ppm |
The composition of table 3 embodiment and comparative example is continuous
| Component | Embodiment 9 | Embodiment 10 | Comparative example 7 | Comparative example 8 |
| Base oil | Base oil I | Base oil II | Base oil III | Base oil IV |
| Polymethacrylate | 8％ | 8％ | 8％ | 8％ |
| SULFURIZED CALCIUM ALKYL PHENATE WITH HIGH BASE NUMBER | 0.8％ | 0.8％ | 0.8％ | 0.8％ |
| The succimide dispersion agent | 6％ | 6％ | 6％ | 6％ |
| Amine type oxidation inhibitor | 0.3％ | 0.3％ | 0.3％ | 0.3％ |
| Alkyl zinc dithiophosphate | 0.1％ | 0.1％ | 0.9％ | 0.9％ |
| Hydroxyethyl heptadecyl tetrahydroglyoxaline | 0.8％ | 0.8％ | 0.8％ | 0.8％ |
| Ethoxylation tallow diamines | 0.8％ | 0.8％ | 0.8％ | 0.8％ |
| T912 | 200ppm | 200ppm | 200ppm | 200ppm |
The composition of table 3 embodiment and comparative example is continuous
| Component | Embodiment 11 | Embodiment 12 | Comparative example 9 | Comparative example 10 |
| Base oil | Base oil I | Base oil II | Base oil III | Base oil IV |
| Polymethacrylate | 8％ | 8％ | 8％ | 8％ |
| SULFURIZED CALCIUM ALKYL PHENATE WITH HIGH BASE NUMBER | 0.8％ | 0.8％ | 0.8％ | 0.8％ |
| The succimide dispersion agent | 6％ | 6％ | 6％ | 6％ |
| Amine type oxidation inhibitor | 0.3％ | 0.3％ | 0.3％ | 0.3％ |
| Alkyl zinc dithiophosphate | 0.5％ | 0.5％ | 0.5％ | 0.5％ |
| T406 | 0.2％ | 0.8％ | 0.2％ | 0.2％ |
| T912 | 200ppm | 200ppm | 200ppm | 200ppm |
Composition to the foregoing description and comparative example carries out performance test, the results are shown in Table 4
Table 4 embodiment and comparative example data contrast table
| υ40 ℃ (cSt) | VI | Pour point (℃) | Traction coefficient max (P Hz＝0.75GPa) | Traction coefficient max (P Hz＝1.25GPa) | |
| Example 3 | 42.99 | 186 | -60 | 0.07948 | 0.09839 |
| Example 4 | 42.35 | 190 | -52 | 0.08678 | 0.10698 |
| Example 5 | 18.88 | 51 | -55 | 0.08023 | 0.09897 |
| Example 6 | 18.78 | 55 | -48 | 0.08704 | 0.10945 |
| Example 7 | 42.96 | 186 | -60 | 0.07812 | 0.09801 |
| Example 8 | 42.38 | 190 | -52 | 0.08684 | 0.10867 |
| Example 9 | 42.98 | 186 | -60 | 0.07988 | 0.09845 |
| Example 10 | 42.33 | 190 | -52 | 0.08691 | 0.10715 |
| Example 11 | 42.29 | 190 | -52 | 0.08632 | 0.10675 |
| Example 12 | 42.31 | 190 | -52 | 0.08561 | 0.10625 |
| Comparative example 1 | 65.35 | 102 | -45 | 0.08273 | 0.09274 |
| Comparative example 2 | 59.59 | 121 | -46 | 0.10987 | 0.12632 |
| Comparative example 3 | 14.6 | -50 | -32 | 0.08342 | 0.09351 |
| Comparative example 4 | 21.88 | 5 | -41 | 0.11078 | 0.12932 |
| Comparative example 5 | 65.35 | 102 | -45 | 0.08126 | 0.09274 |
| Comparative example 6 | 59.62 | 121 | -47 | 0.10945 | 0.12598 |
| Comparative example 7 | 65.35 | 102 | -45 | 0.08295 | 0.09288 |
| Comparative example 8 | 59.59 | 121 | -46 | 0.10988 | 0.12646 |
| Comparative example 9 | 59.66 | 118 | -43 | 0.10322 | 0.11954 |
| Comparative example 10 | 59.61 | 120 | -42 | 0.10287 | 0.11926 |
Annotate: P
HzBe average hertz contact pressure.
By table 4 as can be seen, continuously variable transmission fluid composition provided by the invention, have the viscosity index more much higher than comparative example, lower pour point, demonstrate good viscosity temperature characteristic and better low-temperature fluidity, possesses higher drag coefficient under the normal temperature, though, can satisfy the service requirements of CVT fully a little less than comparative example.Continuously variable transmission fluid composition over-all properties provided by the invention is better than comparative example.
Claims (22)
1. stepless gearbox transmission liquid composition is 100% in the weight of base oil, comprising:
(1) the own lopps alicyclic hydrocarbon of dicyclo basis oil, 2 cyclohexyl of said base oil are connected by 1 methylene radical, and 1～3 C3～C5 short-chain alkyl that contains together with position dimethyl structure is all arranged on each hexamethylene ring;
(2) alkaline earth salt purification agent, content are 0.05～3 heavy %;
(3) ashless dispersant, content are 1～15 heavy %;
(4) phenol type or amine type oxidation inhibitor, content are 0.01～1 heavy %;
(5) anti-wear agent, content are 0.05～2 heavy %;
(6) friction improver, content are 0.05～3 heavy %;
(7) viscosity index improver, content are 0～20 heavy %;
(8) kilfoam, content are 0～1000ppm.
2. according to the described composition of claim 1, it is characterized in that the alkaline earth salt purification agent is one or more in sulfonate, alkyl monosulfide phenates and the alkylsalicylate of alkaline-earth metal.
3. according to the described composition of claim 1, it is characterized in that alkaline-earth metal wherein is calcium, magnesium or barium.
4. according to the described composition of claim 1, it is characterized in that the alkaline earth salt purification agent is middle base number calcium sulfenyl phenolate or SULFURIZED CALCIUM ALKYL PHENATE WITH HIGH BASE NUMBER.
5. according to the described composition of claim 1, it is characterized in that the content of purification agent is 0.5～2 heavy %.
6. according to the described composition of claim 1, it is characterized in that, ashless dispersant is succimide dispersion agent, succinate dispersion agent, oil soluble is phosphorous or the ashless dispersant of boracic in one or more.
7. according to the described composition of claim 1, it is characterized in that ashless dispersant is boronation ashless dispersant or succimide dispersion agent.
8. according to the described composition of claim 1, it is characterized in that the content of ashless dispersant is 3～6 heavy %.
9. according to the described composition of claim 1, it is characterized in that the content of oxidation inhibitor is 0.1～0.8 heavy %.
10. according to the described composition of claim 1, it is characterized in that anti-wear agent is one or more in alkyl zinc dithiophosphate, benzyl disulfide thing, sulfide isobutene, tritolyl phosphate, the boronation oleylamide.
11., it is characterized in that anti-wear agent is benzyl disulfide thing or alkyl zinc dithiophosphate according to the described composition of claim 1.
12., it is characterized in that the content of anti-wear agent is 0.1～1 heavy % according to the described composition of claim 1.
13. according to the described composition of claim 1, it is characterized in that friction improver is one or more in 124 Triazole fatty acid ammonium salt, oleic acid glycol ester, sulfurized olefin cotton oil, trioctyl phosphate, oleic acid, laurylamide diethanolamine, hydroxyethyl heptadecyl tetrahydroglyoxaline, the ethoxylation ox ester diamines.
14., it is characterized in that friction improver is the combination of hydroxyethyl heptadecyl tetrahydroglyoxaline and ethoxylation tallow diamines according to the described composition of claim 1, both mass ratios are 1: 1～5: 1.
15., it is characterized in that friction improver content is 0.1～1 heavy % according to the described composition of claim 1.
16., it is characterized in that viscosity index improver is one or more in polymethacrylate, ethylene-propylene copolymer, polyvinyl n-butyl ether, polyisobutene, the styrene maleic acid ester according to the described composition of claim 1.
17., it is characterized in that viscosity index improver is the polymethacrylate of molecular weight in 10000～100000 scope according to the described composition of claim 1.
18. according to the described composition of claim 1, its feature is at son, the content of viscosity index improver is 1～20 heavy %.
19., it is characterized in that kilfoam is one or more of methyl-silicone oil, ethyl silicon oil, CALCIUM ACRYLATE and ether copolymer according to the described composition of claim 1.
20., it is characterized in that the content of kilfoam is 50～1000ppm according to the described composition of claim 1.
21. according to the described composition of claim 1, it is characterized in that, the alicyclic preparation of the own lopps of said dicyclo comprises: (1) will be contained together with the C1 of position dimethyl structure～C3 alkylbenzene and formaldehyde, under the effect of 106～130 ℃ and an acidic catalyst, generate diarylmethanes type fragrance intermediate through condensation reaction; (2) fragrant intermediate is mixed with hydrogenation catalyst, in 150～200 ℃ of temperature, under the condition of hydrogen pressure 5.0～10.0MPa, it is saturated to carry out hydrogenation.
22., it is characterized in that an acidic catalyst is the vitriol oil, sulfonic acid or heteropolyacid according to the described composition of claim 21.
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