CN109762633A - A kind of engine lubricating oil and preparation method thereof reducing low speed pre-ignition phenomenon - Google Patents
A kind of engine lubricating oil and preparation method thereof reducing low speed pre-ignition phenomenon Download PDFInfo
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- CN109762633A CN109762633A CN201910052847.7A CN201910052847A CN109762633A CN 109762633 A CN109762633 A CN 109762633A CN 201910052847 A CN201910052847 A CN 201910052847A CN 109762633 A CN109762633 A CN 109762633A
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Abstract
The invention discloses a kind of engine lubricating oils for reducing low speed pre-ignition phenomenon, it is made of raw material from the following weight: synthetic base oil, Esters oil, three classes hydrogenated base oil, compound additive, pour-point depressant, defoaming agent, antioxidant, viscosity index improver, detersive and organic anti-friction agent, detersive is magnesium salts detersive, and organic anti-friction agent includes organic-molybdenum and oleamide or glyceryl monooleate.The invention also discloses a kind of preparation methods of engine lubricating oil for reducing low speed pre-ignition phenomenon, comprising the following steps: substance A is made in container a；Substance B is made in container b；Mixing liquid Y is made after substance A and substance B are mixed；Substance C is made in container c, is stirred after mixing liquid Y is mixed with substance C and target product is made.It is an advantage of the invention that engine lubricating oil obtained is used for engine, so that engine reduces the generation of carbon distribution, the abrasion of engine is reduced, and then reduce the generation of low speed pre-ignition phenomenon.
Description
Technical field
The present invention relates to technical field of lubricating oil, more specifically, it relates to which a kind of reduce starting for low speed pre-ignition phenomenon
Machine lubricating oil and preparation method thereof.
Background technique
Domestic Automotive Industry is developed so far from the 1950s, automobile production and consumption big country is had become, it was predicted that arriving
The year two thousand twenty China car ownership is up to 1.3 hundred million, is expected to become global first big automobile market.And with social science and technology into
Step, automobile engine manufacture is more and more finer, and by original big and heavy, power is lowly changed into present small size, big function
Rate, with the use of turbocharging technology, fuel oil quality is improved, so that there is a kind of low speed pre-ignition phenomenon in engine, it is many
Railway car manufacture quotient has been observed that intermittent pre-ignition in the turbo supercharging gasoline engine that they produce, especially in low speed in
Under high load capacity.Under these raised loads, pre-ignition often results in serious combustion knock, can damage engine.
Low speed pre-ignition (LSPI) is to influence hair when brake mean-effective pressure (BMEP) is high low with engine speed (RPM)
The abnormal combustion type of motivation operating.It includes natural gas, gasoline, diesel oil, biomass fuel that this, which includes using various fuel,
The internal combustion engine of material etc..Miniaturization, slow-speed of revolution turbocharged engine is most susceptible under these engine conditions
The influence of operating, therefore be easier to be influenced by LSPI.Because auto industry is miniaturised in trend always, the slow-speed of revolution
Change and improves turbocharging to improve auto fuel economy and reduce CO2 emission, so the hidden danger on LSPI is being held
It is continuous to increase.
Find after study, low speed pre-ignition phenomenon caused generally to have following reason: 1) engine torque shape and export
Power is big；2) carbon distribution is serious in engine, generates hot spot；3) the cylinder body serious wear of engine, machine oil is interior to contain a large amount of iron filings.
Therefore for can be effectively prevented or reduce low speed pre-ignition, the turbine in particular for miniaturization, the slow-speed of revolution increases
The research of the engine lubricating oil of hydraulic motor has a critically important meaning for automobile and lubricating oil field, and presently relevant report
Road is less.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of reduction low speed pre-ignition phenomenon
Engine lubricating oil, its advantage is that: engine lubricating oil obtained is used for engine so that engine reduce carbon distribution production
It is raw, the abrasion of engine is reduced, and then reduce the generation of low speed pre-ignition phenomenon.
Second object of the present invention is to provide a kind of preparation side of engine lubricating oil for reducing low speed pre-ignition phenomenon
Method, its advantage is that: engine lubricating oil obtained is used for engine, so that engine reduces the generation of carbon distribution, reduction is started
The abrasion of machine, and then reduce the generation of low speed pre-ignition phenomenon.
To realize above-mentioned first purpose, the present invention provides the following technical scheme that a kind of reduction low speed pre-ignition phenomenon
Engine lubricating oil, the engine lubricating oil are made of raw material from the following weight:
45~65 parts of synthetic base oil, 10~25 parts of Esters oil, 10~25 parts of three classes hydrogenated base oil, compound additive 8~20
Part, 0.1~1 part of pour-point depressant, 0.1~1.5 part of defoaming agent, 0.5~1 part of antioxidant, 5~15 parts of viscosity index improver, it is peace and quiet
1~4 part of 2~4 parts of agent and organic anti-friction agent；
Wherein, the detersive is magnesium salts detersive, and organic anti-friction agent includes 0.8~1.0 part of organic-molybdenum and 0.2~3 part
Oleamide or glyceryl monooleate.
By using above-mentioned technical proposal, synthetic base oil has good inoxidizability, can effectively prevent carbon distribution and oil
The generation of mud promotes effective operating of engine, and is added oil-soluble organic in the present invention using no calcium salt detersive
Anti-friction agent, final engine lubricating oil obtained are used for engine, so that engine reduces the generation of carbon distribution, reduce engine
Abrasion, and then reduce the generation of low speed pre-ignition phenomenon.
The present invention is further arranged to: the engine lubricating oil is made of raw material from the following weight:
50~60 parts of synthetic base oil, 15~20 parts of Esters oil, 15~20 parts of three classes hydrogenated base oil, compound additive 9~12
Part, 0.1~1 part of pour-point depressant, 0.1~1.5 part of defoaming agent, 0.5~1 part of antioxidant, 8~10 parts of viscosity index improver, it is peace and quiet
1~4 part of 2~4 parts of agent and organic anti-friction agent；Wherein organic anti-friction agent includes the oleamide of 0.8~1.0 part and 0.5~1.0 part
Or glyceryl monooleate.
The present invention is further arranged to: the engine lubricating oil is made of raw material from the following weight:
55 parts of synthetic base oil, 18 parts of Esters oil, 17 parts of three classes hydrogenated base oil, 10 parts of compound additive, 0.5 part of pour-point depressant,
3 parts of 1 part of defoaming agent, 0.6 part of antioxidant, 9 parts of viscosity index improver, 3 parts of detersive and organic anti-friction agent；Wherein organic antifriction
Agent includes the oleamide or glyceryl monooleate of 0.9 part of organic-molybdenum and 2.1 parts.
The present invention is further arranged to: the antioxidant is that Hinered phenols antioxidant and diphenylamines are made with the compounding of 1:1~2
With.
The present invention is further arranged to: the organic-molybdenum is molybdenum dialkyldithiocarbamacompositions；
The pour-point depressant is polymethacrylates；
The defoaming agent is silicone-type defoaming agent.
The present invention is further arranged to: the sulfated ash of the compound additive is 6.
The present invention is further arranged to: the preparation of the viscosity index improver the following steps are included:
Under nitrogen atmosphere to the 100N base oil heating stirring of 80~90 parts by weight, until 90 ± 5 DEG C are heated to, at this point, plus
Enter the good hydrogenated styrene isoprene copolymer of 10~20 parts by weight of crushed, be warming up to 130 DEG C ± 5 DEG C, then 130 DEG C ±
18h is stirred at 5 DEG C, and the viscosity index improver then is made by shearing, filtering.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that a kind of reduction low speed pre-ignition phenomenon
The preparation method of engine lubricating oil, comprising the following steps:
Synthetic base oil and three classes hydrogenated base oil are mixed according to the proportion in container a, are warming up to 80 ± 5 DEG C, stirring 30~
Then 50min sequentially adds viscosity index improver, pour-point depressant, compound additive, defoaming agent, antioxidant and detersive, 70
It is stirred at a temperature of ± 5 DEG C and substance A is made；
The Esters oil that half is injected in container b, is added organic-molybdenum after being heated to 60~80 DEG C, stir 100~140min
B substance is made afterwards；
Mixing liquid Y is made after 50~70min is mixed in A substance and B substance；
Remaining Esters oil is injected in container c, is heated to 115~125 DEG C, and oleamide or single oleic is then added
Substance C is made after stirring 4~5h at this temperature in ester；
Mixing liquid Y is mixed with substance C, 75 ± 5 DEG C at a temperature of stirring 50~70min after be made target product.
In conclusion the invention has the following advantages:
Using no calcium salt detersive in the present invention, oil-soluble organic-molybdenum and organic anti-friction agent are added, it is finally obtained to start
Machine lubricating oil is used for engine, so that engine reduces the generation of carbon distribution, reduces the abrasion of engine, and then reduce low speed pre-ignition
The generation of phenomenon.
Specific embodiment
Invention is further described in detail with reference to embodiments.
The following are the preparation examples 1~3 of viscosity index improver
Preparation example 1
The preparation of viscosity index improver, comprising the following steps:
Under nitrogen atmosphere to the GTL100N base oil of 80 parts by weight (being purchased from Shell Co. Ltd) heating stirring, until being heated to 85
DEG C, at this point, the good hydrogenated styrene isoprene copolymer of 10 parts by weight of crushed, which is added, (is purchased from U.S. Ke Teng company, model
G1765), 125 DEG C are warming up to, 18h is then stirred at 125 DEG C, then the viscosity index (VI) is made and improves by shearing, filtering
Agent.
Preparation example 2
The preparation of viscosity index improver is carried out according to method in preparation example 1, the difference is that, under nitrogen atmosphere to 85
The mineral oil heating stirring of parts by weight, until 90 DEG C are heated to, at this point, the good hydrogenated styrene isoamyl of 15 parts by weight of crushed is added
Diene copolymers are warming up to 130 DEG C, and 18h is then stirred at 130 DEG C, and the viscosity index (VI) then is made by shearing, filtering
Modifier.
Preparation example 3
The preparation of viscosity index improver is carried out according to method in preparation example 1, the difference is that, under nitrogen atmosphere to 90
The mineral oil heating stirring of parts by weight, until 95 DEG C are heated to, at this point, the good hydrogenated styrene isoamyl of 20 parts by weight of crushed is added
Diene copolymers are warming up to 135 DEG C, and 18h is then stirred at 135 DEG C, and the viscosity index (VI) then is made by shearing, filtering
Modifier.
Embodiment
All raw materials in following embodiment in addition to viscosity index improver are available.
A kind of engine lubricating oil reducing low speed pre-ignition phenomenon, is made of raw material from the following weight:
45~65 parts of synthetic base oil, 10~25 parts of Esters oil, 10~25 parts of three classes hydrogenated base oil, compound additive 8~20
Part, 0.1~1 part of pour-point depressant, 0.1~1.5 part of defoaming agent, 0.5~1 part of antioxidant, 5~15 parts of viscosity index improver, it is peace and quiet
1~4 part of 2~4 parts of agent and organic anti-friction agent；
Wherein, synthetic base oil is synthetic oil PAO, and synthetic oil PAO, Esters oil and three classes hydrogenated base oil are commonly used in the art
Synthetic oil is not particularly limited, and under preferable case, 100 DEG C of viscosity of synthetic oil PAO are 60~65mm2/ s, Esters oil are polynary
Alcohol ester, 100 DEG C of viscosity of Esters oil are 4~4.5mm2/ s, and 100 DEG C of viscosity of class hydrogenated base oil are 4~4.5mm2/s；It is anti-
Oxygen agent is that Hinered phenols antioxidant and diphenylamines are used in compounding with 1:1~2；
Organic anti-friction agent includes the oleamide or glyceryl monooleate of 0.8~1.0 part of organic-molybdenum and 0.2~3 part, wherein is had
Machine molybdenum is molybdenum dialkyldithiocarbamacompositions；
Pour-point depressant is Polymethacrylate type pour-point depressant；
Defoaming agent is polysiloxane type defoaming agent；
Detersive is one or more of magnesium salts detersive, including sulfonic acid magnesium, phenol magnesium, magnesium salicylate, magnesium carboxylates, magnesium phosphate；
Viscosity index improver is viscosity index improver obtained in preparation example 1~3.
In following embodiment, synthetic oil PAO is purchased from Exxon Mobil Corporation, and brand is Mobil, model spectraSyn
Elite 65mPAO；
Esters oil is purchased from Britain's standing grain major company, and brand is that standing grain is big, model priolube 1973；
Three classes hydrogenated base oil is purchased from Shell Co. Ltd；
Hinered phenols antioxidant is purchased from Hebei Chuan Pu Chemical Co., Ltd., model antioxidant 1010；
Molybdenum dialkyldithiocarbamacompositions are purchased from the sincere Si Da lubricant in Liaocheng City development zone Co., Ltd, model TM-08A；
Oleamide and glyceryl monooleate are purchased from Jiaxing Zhong Cheng company；
Polymethacrylate type pour-point depressant is purchased from Luo Man Ces Co., Ltd, Germany, model SCR-168A；
Polysiloxane type defoaming agent is purchased from the rich defoaming agent of moral, model DF-678；
Magnesium salts detersive is purchased from Chevron Corporation (Stardard Oil Company of California), model OLOA1829；
Viscosity index improver is viscosity index improver obtained in preparation example 1~3；
Compound additive is purchased from Chevron Corporation (Stardard Oil Company of California), detects to the compound additive, and sulfated ash is 6 in the compound additive,
It by percentage to the quality, include following ingredient, 0.1% boron, 1.5% calcium, 0.55% phosphorus, 0.9% nitrogen, 0.9% zinc；
Embodiment 1
It is a kind of reduce low speed pre-ignition phenomenon engine lubricating oil preparation method, each raw material based on parts by weight, including with
Lower step:
It prepares substance A: by 55 parts of synthetic base oils and 17 parts of three classes hydrogenated base oil injection container a, being warming up to 80 DEG C, stirring
After 40min, 9 parts of viscosity index improvers, 0.5 portion of pour-point depressant, 10 parts of compound additives, 1 part of defoaming agent, 0.6 part are sequentially added
Substance A is made in 75 DEG C of at a temperature of stirring in antioxidant and 3 portions of detersives；
It prepares substance B: 9 parts of Esters oils being injected into container b, 0.9 part of organic-molybdenum is added after being warming up to 70 DEG C, after stirring 2h
Substance B is made；
Mixing liquid Y is made after 60min is mixed in A substance and B substance；
It prepares substance C: injecting remaining 9 parts of Esters oils in container c, be heated to 120 DEG C, 2.1 parts of oleamides are then added,
Substance C is made after stirring 4.5h at this temperature；
Mixing liquid Y is mixed with substance C, 75 DEG C at a temperature of stirring 60min after be made target product.
Wherein, viscosity index improver is viscosity index improver obtained in preparation example 2；Antioxidant is anti-for Hinered phenols
Oxygen agent and diphenylamines are used in compounding with 1:1.5.
Embodiment 2
It is a kind of reduce low speed pre-ignition phenomenon engine lubricating oil preparation method, each raw material based on parts by weight, including with
Lower step:
It prepares substance A: by 50 parts of synthetic base oils and 15 parts of three classes hydrogenated base oil injection container a, being warming up to 80 DEG C, stirring
After 40min, 8 parts of viscosity index improvers, 0.1 portion of pour-point depressant, 9 parts of compound additives, 0.1 part of defoaming agent, 0.5 part are sequentially added
Substance A is made in 75 DEG C of at a temperature of stirring in antioxidant and 2 portions of detersives；
It prepares substance B: 7.5 parts of Esters oils being injected into container b, 0.8 part of organic-molybdenum is added after being warming up to 70 DEG C, after stirring 2h, i.e.,
Substance B can be made；
Mixing liquid Y is made after 60min is mixed in A substance and B substance；
It prepares substance C: injecting remaining 7.5 parts of Esters oils in container c, be heated to 120 DEG C, 0.5 part of oleic acid acyl is then added
Substance C is made after stirring 4.5h at this temperature in amine；
Mixing liquid Y is mixed with substance C, 75 DEG C at a temperature of stirring 60min after be made target product.
Embodiment 3
It is a kind of reduce low speed pre-ignition phenomenon engine lubricating oil preparation method, each raw material based on parts by weight, including with
Lower step: preparation substance A: by 60 parts of synthetic base oils and 20 parts of three classes hydrogenated base oil injection container a, being warming up to 80 DEG C,
After stirring 40min, 10 parts of viscosity index improvers, 1 portion of pour-point depressant, 12 parts of compound additives, 1.5 parts of defoaming agents, 1 are sequentially added
Substance A is made in 75 DEG C of at a temperature of stirring in part antioxidant and 4 portions of detersives；
It prepares substance B: 10 parts of Esters oils being injected into container b, 1.0 parts of organic-molybdenums are added after being warming up to 70 DEG C, after stirring 2h
Substance B is made；
Mixing liquid Y is made after 60min is mixed in A substance and B substance；
It prepares substance C: injecting remaining 10 parts of Esters oils in container c, be heated to 120 DEG C, 1.0 parts of oleic acid acyls are then added
Substance C is made after stirring 4.5h at this temperature in amine；
Mixing liquid Y is mixed with substance C, 75 DEG C at a temperature of stirring 60min after be made target product.
Embodiment 4
It is a kind of reduce low speed pre-ignition phenomenon engine lubricating oil preparation method, each raw material based on parts by weight, including with
Lower step:
It prepares substance A: by 45 parts of synthetic base oils and 10 parts of three classes hydrogenated base oil injection container a, being warming up to 80 DEG C, stirring
After 40min, 5 parts of viscosity index improvers, 0.1 portion of pour-point depressant, 8 parts of compound additives, 0.1 part of defoaming agent, 0.5 part are sequentially added
Substance A is made in 75 DEG C of at a temperature of stirring in antioxidant and 2 portions of detersives；
It prepares substance B: 5 parts of Esters oils being injected into container b, 0.8 part of organic-molybdenum is added after being warming up to 70 DEG C, after stirring 2h
Substance B is made；
Mixing liquid Y is made after 60min is mixed in A substance and B substance；
It prepares substance C: injecting remaining 5 parts of Esters oils in container c, be heated to 120 DEG C, 0.2 part of oleamide is then added,
Substance C is made after stirring 4.5h at this temperature；
Mixing liquid Y is mixed with substance C, 75 DEG C at a temperature of stirring 60min after be made target product.
Embodiment 5
It is a kind of reduce low speed pre-ignition phenomenon engine lubricating oil preparation method, each raw material based on parts by weight, including with
Lower step:
It prepares substance A: by 65 parts of synthetic base oils and 25 parts of three classes hydrogenated base oil injection container a, being warming up to 80 DEG C, stirring
After 40min, sequentially add 15 parts of viscosity index improvers, 1 portion of pour-point depressant, 20 parts of compound additives, 1.5 parts of defoaming agents, 1 part it is anti-
Substance A is made in 75 DEG C of at a temperature of stirring in oxygen agent and 4 portions of detersives；
It prepares substance B: 12.5 parts of Esters oils being injected into container b, 1.0 parts of organic-molybdenums are added after being warming up to 70 DEG C, after stirring 2h, i.e.,
Substance B can be made；
Mixing liquid Y is made after 60min is mixed in A substance and B substance；
It prepares substance C: injecting remaining 7.5 parts of Esters oils in container c, be heated to 120 DEG C, 3 parts of oleamides are then added,
Substance C is made after stirring 4.5h at this temperature；
Mixing liquid Y is mixed with substance C, 75 DEG C at a temperature of stirring 60min after be made target product.
Embodiment 6
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in the present embodiment medium viscosity index improver is viscosity index improver obtained in preparation example 1.
Embodiment 7
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in the present embodiment medium viscosity index improver is viscosity index improver obtained in preparation example 3.
Embodiment 8
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in antioxidant is that Hinered phenols antioxidant and diphenylamines are used in compounding with 1:1 in the present embodiment.
Embodiment 9
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in antioxidant is that Hinered phenols antioxidant and diphenylamines are used in compounding with 1:2 in the present embodiment.
Embodiment 10
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in preparing the organic anti-friction agent being added during substance C is glyceryl monooleate.
Embodiment 11
It is a kind of reduce low speed pre-ignition phenomenon engine lubricating oil preparation method, each raw material based on parts by weight, including with
Lower step:
It prepares substance A: by 55 parts of synthetic base oils and 17 parts of three classes hydrogenated base oil injection container a, being warming up to 75 DEG C, stirring
After 30min, 9 parts of viscosity index improvers, 0.5 portion of pour-point depressant, 10 parts of compound additives, 1 part of defoaming agent, 0.6 part are sequentially added
Substance A is made in 65 DEG C of at a temperature of stirring in antioxidant and 3 portions of detersives；
It prepares substance B: 9 parts of Esters oils being injected into container b, 0.9 part of organic-molybdenum is added after being warming up to 60 DEG C, after stirring 100min,
It can be prepared by substance B；
Mixing liquid Y is made after 50min is mixed in A substance and B substance；
It prepares substance C: injecting remaining 9 parts of Esters oils in container c, be heated to 115 DEG C, 2.1 parts of oleamides are then added,
Substance C is made after stirring 4h at this temperature；
Mixing liquid Y is mixed with substance C, 70 DEG C at a temperature of stirring 50min after be made target product.
Wherein, viscosity index improver is viscosity index improver obtained in preparation example 2；Antioxidant is anti-for Hinered phenols
Oxygen agent and diphenylamines are used in compounding with 1:1.5.
Embodiment 12
It is a kind of reduce low speed pre-ignition phenomenon engine lubricating oil preparation method, each raw material based on parts by weight, including with
Lower step:
It prepares substance A: by 55 parts of synthetic base oils and 17 parts of three classes hydrogenated base oil injection container a, being warming up to 85 DEG C, stirring
After 50min, 9 parts of viscosity index improvers, 0.5 portion of pour-point depressant, 10 parts of compound additives, 1 part of defoaming agent, 0.6 part are sequentially added
Substance A is made in 75 DEG C of at a temperature of stirring in antioxidant and 3 portions of detersives；
It prepares substance B: 9 parts of Esters oils being injected into container b, 0.9 part of organic-molybdenum is added after being warming up to 80 DEG C, after stirring 140min,
It can be prepared by substance B；
Mixing liquid Y is made after 70min is mixed in A substance and B substance；
It prepares substance C: injecting remaining 9 parts of Esters oils in container c, be heated to 125 DEG C, 2.1 parts of oleamides are then added,
Substance C is made after stirring 5h at this temperature；
Mixing liquid Y is mixed with substance C, 80 DEG C at a temperature of stirring 70min after be made target product.
Comparative example
Comparative example 1
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in antioxidant is Hinered phenols antioxidant.
Comparative example 2
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in antioxidant is diphenylamines.
Comparative example 3
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in organic anti-friction agent is organic-molybdenum, does not contain oleamide and glyceryl monooleate.
Comparative example 4
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in organic anti-friction agent is oleamide, is free of organic-molybdenum.
Comparative example 5
A kind of preparation method for the engine lubricating oil reducing low speed pre-ignition phenomenon, carries out according to method in embodiment 1, difference
It is in without containing detersive in raw material.
Performance detection test
Detection test 1
Engine lubricating oil obtained in above-mentioned each embodiment and comparative example is tested for the property, as a result as shown in table 1 below.
Table 1:
Continued 1:
In the prior art, automobile is in the market after oil product, and replacement is several times after oil product, it is found that automobile has seismaesthesia, and adjoint
" drone " sound, and engine lubricating oil obtained in above-described embodiment to be used for several automobiles of different model, often
Discovery automobile is not in above-mentioned phenomenon after half a year changes oil, and has obvious inhibitory effect for low speed pre-ignition phenomenon.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (8)
1. a kind of engine lubricating oil for reducing low speed pre-ignition phenomenon, which is characterized in that the engine lubricating oil is by following weight
The raw material of part is made:
45~65 parts of synthetic base oil, 10~25 parts of Esters oil, 10~25 parts of three classes hydrogenated base oil, compound additive 8~20
Part, 0.1~1 part of pour-point depressant, 0.1~1.5 part of defoaming agent, 0.5~1 part of antioxidant, 5~15 parts of viscosity index improver, it is peace and quiet
1~4 part of 2~4 parts of agent and organic anti-friction agent；
Wherein, the detersive is magnesium salts detersive, and organic anti-friction agent includes 0.8~1.0 part of organic-molybdenum and 0.2~3 part
Oleamide or glyceryl monooleate.
2. a kind of engine lubricating oil for reducing low speed pre-ignition phenomenon according to claim 1, which is characterized in that this starts
Machine lubricating oil is made of raw material from the following weight:
50~60 parts of synthetic base oil, 15~20 parts of Esters oil, 15~20 parts of three classes hydrogenated base oil, compound additive 9~12
Part, 0.1~1 part of pour-point depressant, 0.1~1.5 part of defoaming agent, 0.5~1 part of antioxidant, 8~10 parts of viscosity index improver, it is peace and quiet
1~4 part of 2~4 parts of agent and organic anti-friction agent；Wherein organic anti-friction agent includes the oleamide of 0.8~1.0 part and 0.5~1.0 part
Or glyceryl monooleate.
3. a kind of engine lubricating oil for reducing low speed pre-ignition phenomenon according to claim 1, which is characterized in that this starts
Machine lubricating oil is made of raw material from the following weight:
55 parts of synthetic base oil, 18 parts of Esters oil, 17 parts of three classes hydrogenated base oil, 10 parts of compound additive, 0.5 part of pour-point depressant,
3 parts of 1 part of defoaming agent, 0.6 part of antioxidant, 9 parts of viscosity index improver, 3 parts of detersive and organic anti-friction agent；Wherein organic antifriction
Agent includes the oleamide or glyceryl monooleate of 0.9 part of organic-molybdenum and 2.1 parts.
4. a kind of engine lubricating oil for reducing low speed pre-ignition phenomenon according to claim 1, which is characterized in that described anti-
Oxygen agent is that Hinered phenols antioxidant and diphenylamines are used in compounding with 1:1~1:2.
5. a kind of engine lubricating oil for reducing low speed pre-ignition phenomenon according to claim 1, which is characterized in that described to have
Machine molybdenum is molybdenum dialkyldithiocarbamacompositions；
The pour-point depressant is polymethacrylates；
The defoaming agent is silicone-type defoaming agent.
6. a kind of engine lubricating oil for reducing low speed pre-ignition phenomenon according to claim 1, which is characterized in that described multiple
The sulfated ash for closing additive is 6.
7. a kind of engine lubricating oil for reducing low speed pre-ignition phenomenon according to claim 1, which is characterized in that described viscous
Spend index improver preparation the following steps are included:
Under nitrogen atmosphere to the 100N base oil heating stirring of 80~90 parts by weight, until 90 ± 5 DEG C are heated to, at this point, plus
Enter the good hydrogenated styrene isoprene copolymer of 10~20 parts by weight of crushed, be warming up to 130 DEG C ± 5 DEG C, then 130 DEG C ±
18h is stirred at 5 DEG C, and the viscosity index improver then is made by shearing, filtering.
8. a kind of a kind of preparation side of the engine lubricating oil of reduction low speed pre-ignition phenomenon as described in claim 1~7 is any
Method, which comprises the following steps:
Synthetic base oil and three classes hydrogenated base oil are mixed according to the proportion in container a, are warming up to 80 ± 5 DEG C, stirring 30~
Then 50min sequentially adds viscosity index improver, pour-point depressant, compound additive, defoaming agent, antioxidant and detersive, 70
60 ~ 80min is stirred at a temperature of ± 5 DEG C, and substance A is made；
The Esters oil that half is injected in container b, is added organic-molybdenum after being heated to 60~80 DEG C, stir 100~140min
B substance is made afterwards；
Mixing liquid Y is made after 50~70min is mixed in A substance and B substance；
Remaining Esters oil is injected in container c, is heated to 115~125 DEG C, and oleamide or single oleic is then added
Substance C is made after stirring 4~5h at this temperature in ester；
Mixing liquid Y is mixed with substance C, 75 ± 5 DEG C at a temperature of stirring 50~70min after be made target product.
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