CN102994193B - Gas engine lubricating oil composition - Google Patents
Gas engine lubricating oil composition Download PDFInfo
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- CN102994193B CN102994193B CN201110272585.9A CN201110272585A CN102994193B CN 102994193 B CN102994193 B CN 102994193B CN 201110272585 A CN201110272585 A CN 201110272585A CN 102994193 B CN102994193 B CN 102994193B
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Abstract
The invention relates to a low-ash gas engine lubricating oil composition. According to the invention, besides base oil, the composition comprises a detergent, an ash-free dispersing agent, an antioxidant, an auxiliary antioxidant, and an anti-oxidation anti-wear agent. The lubricating oil composition can satisfy requirements of an API CF-level. Oil product ash content is lower than 0.6%. The composition has the advantages of simple formula, low cost, and convenient preparation.
Description
Technical field
The present invention relates to a kind of gas engine lubricating oil composition, be especially applicable to the lubricated lubricating oil composition of fixed and portable gas engine.It has good dispersive ability, the anti-rotten wear resistance of antioxygen, high temperature detergent performance and antioxidant property, can meet lubricating requirement fixed, portable gas engine.Said composition in the requirement of CF level oil, has lower ash content in meeting GB11122-2006, and the sulfated ash of said composition is not more than 0.6%.
Technical background
In recent years; along with world energy sources crisis appearance and people's environmental consciousness strengthen; alternative motor fuels-compressed natural gas and liquefied petroleum gas (LPG) are high with its octane value, carbon monoxide (CO); the quantity discharged of hydrocarbon polymer (CH) and particulate is low, aboundresources and lower-price characteristic operation and give birth to; the in the situation that of the extensive use of Sweet natural gas, quantity fixed and portable gas engine also increases year by year.
Combustion gas is different from diesel oil, gasoline, and lubricating oil is had to particular requirement, as higher in the temperature of combustion of gas engine combustion gas, and lubricating oil is easy to oxidation, so require lubricating oil will have good oxidation-resistance; Therefore during fuel gas buring, flame transmission speed is slower, and exhaust temperature is higher, and the working conditions of the lubricating oil at exhaust valve guide and valve seat place is severe, requires lubricating oil both to have good oxidation-resistance, again high temperature resistant, anticorrosive, resistance to wear; Combustion exhaust at high temperature easily generates oxynitride, can make lubricating oil accelerate deterioration by oxidation, so require lubricating oil also should have good anti-oxidative stability and detergent-dispersant performance if scurry into crankcase; The sedimental cleansing power that Sweet natural gas produces in burning Indoor Combustion lubricating oil is not enough, and these settlings (referring generally to carbon deposit) can cause spark advance and the wearing and tearing of valve system, so require the ash content that lubricating oil contains can not be too high.
Portable, stationary gas motor has also proposed harsh requirement to lubricants performance simultaneously, as higher in load, requires lubricating oil to have good resistance to high temperature oxidation cracking and generates sedimental performance, prevents cylinder sleeve polishing and the wearing and tearing of piston cyclization valve system; Temperature is high, the temperature difference is large, requires lubricating oil to have agreeable viscosity, good viscosity temperature characteristic and excellent high temperature antioxygen property.
Chinese patent CN1611588 discloses a kind of gas engine nano lubricating oil, and it comprises: the antifriction nano energy-saving agent of a kind of lubricating base oil, a kind of harmonic motion viscosity, nanometer high base number calcium alkylbenzenesulfonate, the synthetic sulfonic acid magnesium of the super base number of nanometer, nano double allyl butyrate imide, nanometer tricresol phosphate fat and a kind of spumescence nanometer methyl-silicone oil.Lubricating oil of the present invention can effectively strengthen the lubricant effect of gas engine in operation process, particularly improves lubricated low temperature adaptability, viscosity characteristics, wear resistance and non-corrosibility etc.
Chinese patent CN1594519 the invention discloses a kind of gaseous fuel engine lubricating oil, it is characterized in that being comprised of low-sulfur paraffin base oil, antioxidant additive, extreme pressure anti-wear additives, anti-additive foam, pour point depressant and emulsion resistance additive.This gaseous propellant engine special oil is applicable to take the motor car engine that clean automobile fuel (as LPG, CNG, LNG etc.) is power, there is excellent oxidation corrosion resistance, extreme pressure anti-wear, suitable sulfate ash content, lower phosphorus content and the good performances such as low-temperature startup, can meet the service requirements of gaseous propellant engine completely.
Summary of the invention
The object of the invention is: the low grey type gas engine oil compositions that a kind of cost performance is good is provided, can meets the requirement of CF level oil in GB11122-2006, and have lower ash content, the sulfated ash of said composition is not more than 0.6%.
Lubricating oil composition of the present invention comprises:
(A) alkylsalicylate or alkyl monosulfide phenates or sulfonate or above both mixtures arbitrarily or three's mixture;
(B) the two Ashless butyl diimide dispersants of high molecular ashless dispersant or polyisobutylene-bis-succinimide ashless dispersant or boronation polyisobutenyl or above both mixtures arbitrarily or three's mixture;
(C) zinc dialkyl dithiophosphate or liquid multi-functional antioxygen anti-wear agent or the mixture of the two;
(D) phenol type antioxidant or amine type oxidation inhibitor or both mixtures;
(E) ethylene-propylene copolymer or polymethacrylate viscosity index improver;
(F) poly-alpha olefins or polymethacrylate pour point depressant;
(G) base oil is hydrogenated base oil or synthetic base oil.
Alkylsalicylate molecular structure is:
In formula, R is the alkyl containing 10～20 carbon atoms, M=Ca or Mg, and n is non-vanishing positive integer.
Sulfenyl phenolate molecules of salt structure is:
In formula, R is the alkyl containing 10-24 carbon atom, M=Ca or Mg, and x, y, n are non-vanishing positive integer.
The molecular structure of sulfonate is:
R=C
nh
2n+1, n=14-28; M=Ca or Mg; M is positive integer.
The molecular structure of high molecular ashless dispersant is:
R=polyisobutene wherein, molecular weight is 1000-3000;
The molecular structure of polyisobutylene-bis-succinimide ashless dispersant is:
R=polyisobutene wherein, molecular weight is 600-2000; M=2-6;
The two Ashless butyl diimide dispersant molecular structures of boronation polyisobutenyl are:
The molecular weight of PIB is 600-2000.
The molecular structure of zinc dialkyl dithiophosphate is:
The molecular structure of liquid multi-functional antioxygen anti-wear agent is:
The molecular structure of phenol type antioxidant is:
The molecular structure of amine type oxidation inhibitor is:
Wherein component (A) accounts for the 0.5-4.0% of composition gross weight, component (B) accounts for the 1.0-9.0% of composition gross weight, component (C) accounts for the 0.1-2.5% of composition gross weight, component (D) accounts for the 0.01-4.0% of composition gross weight, component (E) accounts for the 0.1-18.0% of composition gross weight, component (F) accounts for the 0.01-3.0% of composition gross weight, and component (G) accounts for the 65.0-95.0% of composition gross weight.
In lubricating oil composition of the present invention, also can contain a small amount of kilfoam.
In lubricating oil composition of the present invention:
Metal detergent, in order to improve the detergency of lubricating oil composition, particularly high temperature detergency, meets the requirement of oil product to ash content and base number simultaneously.
The use of ashless dispersant, can improve the dispersing property of oil product, particularly can improve High Temperature Disperse performance and the abrasion resistance of oil product, and can make oil product there is good fuel saving, and make the polar compound that oil product produces in the process of decaying can be good at being dispersed in oil product, and be unlikely deposition.
In composition by the multi-functional antioxygen anti-wear agent of phenol, amine type auxiliary antioxidant and liquid macroimolecule amount and zinc dialkyl dithiophosphate compound use, with different antioxidant mechanisms, cooperatively interact and jointly suppressed the high temperature oxidation of lubricating oil, give the high-temperature oxidation resistance of said composition excellence and suppress the ability that oil product settling generates.
The binder component that selectivity is good can't solve problem to be solved by this invention completely.The present invention utilizes interactional principle between well-known binder component, make every effort to make each functional additive except giving full play to the feature performance benefit of himself, meeting aspect the requirement of engine properties, make as far as possible to produce stronger " synergistic effect " between each functional additive component, avoid occurring " antagonistic effect ".
Its viscosity grade of lubricating oil composition of the present invention is 10W-X or 15W-X or the 20W-X of GB11122-2006 regulation, and wherein X is any one in 30,40,50.
The present invention has adopted well-known Panel Coker test and hot-tube test simulation Caterpillar 1M-PC engine piston detergency, also adopted in addition low-level oxidation test (CMOT) to evaluate the oxidation induction period of oil product, the scorch time that utilizes micro coking test evaluation oil product, proves its antioxidant property thus.
Whether meet the performance characteristics of low grey h type engine h oil, must carry out the measurement of oil product ash content, the ash content of oil product should be not more than 0.6%.
From Bench Evaluation, judge whether lubricating oil composition meets the requirement of API CF diesel engine oil, need carry out Caterpillar 1M-PC test and the test of CRCR L-38 bearing insert corrosion.
The present composition is low ash design, meets the particular requirement of gas engine oil product to ash content; There is good viscosity-temperature characteristics and low-temperature performance; There is excellent anti-oxidant, anti-Nitrification; There is good detergent-dispersant performance energy and high temperature dispersibility.
Advantage of the present invention and effect further illustrate by the following examples.
Embodiment
Embodiment 1
Embodiment 1 is total composition 10W-40 gas engine lubricating oil, and component concentration is in Table 1, and the analytical data obtaining is thus listed in table 3.In table 3, comparative example is for meeting other business of CF level with oily.
Table 1
Embodiment 2
Embodiment 2 is total composition 10W-40 gas engine lubricating oil.Component concentration is in Table 2, and the analytical data obtaining is thus listed in table 3, and in table 3, comparative example is for meeting other business of CF level with oily.In addition the engine rig test, embodiment 2 being carried out again the results are shown in Table 4.
Table 2 10W-40 gas engine lubricating oil component content
Table 3 10W-40 gas engine lubricating oil component analytical data
The engine rig test result that table 4 embodiment 2 carries out
Claims (8)
1. the lubricating oil composition of a low grey gas engine, it is characterized in that: composition comprises (A) metal detergent, (B) ashless dispersant, (C) the anti-rotten anti-wear agent of antioxygen, (D) at least one oxidation inhibitor, (E) viscosity index improver, (F) pour point depressant, (G) base oil, wherein component (A) accounts for the 1.3-4.0% of composition gross weight, component (B) accounts for the 8.0-9.0% of composition gross weight, component (C) accounts for the 1.6-1.7% of composition gross weight, component (D) accounts for the 2.1-4.0% of composition gross weight, component (E) accounts for 8.5% of composition gross weight, component (F) accounts for 0.2% of composition gross weight, component (G) is surplus, wherein:
(A) component is that alkylsalicylate, alkyl monosulfide phenates mix with sulfonate three, and its blending ratio is 3-5:2-4:6;
(B) component is that high molecular ashless dispersant, polyisobutylene-bis-succinimide ashless dispersant mix arbitrarily with the two Ashless butyl diimide dispersant threes of boronation polyisobutenyl;
(C) component is that zinc dialkyl dithiophosphate mixes arbitrarily with liquid multi-functional antioxygen anti-wear agent, and wherein the molecular structure of liquid multi-functional antioxygen anti-wear agent is:
(D) component is phenol type antioxidant or amine type oxidation inhibitor or both mixtures.
2. lubricating oil composition according to claim 1, is characterized in that in said component (A), alkylsalicylate molecular structure is:
In formula, R is the alkyl containing 10～20 carbon atoms, M=Ca or Mg, and n is non-vanishing positive integer;
Sulfenyl phenolate molecules of salt structure is:
In formula, R is the alkyl containing 10-24 carbon atom, M=Ca or Mg, and x, y, n are non-vanishing positive integer;
The molecular structure of sulfonate is:
R=C
nh
2n+1, n=14-28; M=Ca or Mg; M is positive integer.
3. lubricating oil composition according to claim 1, is characterized in that in said component (B), the molecular structure of high molecular ashless dispersant is:
R=polyisobutene wherein, molecular weight is 1000-3000;
The molecular structure of polyisobutylene-bis-succinimide ashless dispersant is:
R=polyisobutene wherein, molecular weight is 600-2000; M=2-6;
The two Ashless butyl diimide dispersant molecular structures of boronation polyisobutenyl are:
The molecular weight of PIB is 600-2000.
4. lubricating oil composition according to claim 1, is characterized in that in said component (C),
The molecular structure of zinc dialkyl dithiophosphate is:
5. lubricating oil composition according to claim 1, is characterized in that in said component (D),
The molecular structure of phenol type antioxidant is:
The molecular structure of amine type oxidation inhibitor is:
6. lubricating oil composition according to claim 1, is characterized in that said component (E) is ethylene-propylene copolymer or polymethacrylate.
7. lubricating oil composition according to claim 1, is characterized in that said component (F) is poly-alpha olefins or polymethacrylate.
8. lubricating oil composition according to claim 1, is characterized in that said component (G) is hydrogenated base oil or synthetic base oil.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589488B (en) * | 2013-11-12 | 2015-06-03 | 广西大学 | Engineering machinery lubricant taking LNG (liquefied natural gas) as fuel |
| CN104388153B (en) * | 2014-07-09 | 2016-11-02 | 山东北方淄特特种油股份有限公司 | A kind of long-life Lubricating Oil for Gas Automobile Engine |
| CN105567387B (en) * | 2014-10-09 | 2018-11-09 | 中国石油化工股份有限公司 | A kind of stationary gas motor fluid composition |
| CN106318559B (en) * | 2015-06-16 | 2019-03-22 | 中国石油化工股份有限公司 | A kind of gas engine lubricant oil composite and preparation method thereof |
| CN105062648A (en) * | 2015-09-17 | 2015-11-18 | 天津市中达石化有限责任公司 | Low-ash type gas engine lubricating oil composition |
| CN107699320A (en) * | 2016-08-08 | 2018-02-16 | 西安石油大佳润实业有限公司 | A kind of gas engine Special lubricating fluid composition |
| CN110016380B (en) * | 2018-01-08 | 2021-11-30 | 中国石油天然气股份有限公司 | Diesel engine oil composition |
| CN110713859B (en) * | 2018-07-13 | 2022-02-01 | 中国石油天然气股份有限公司 | Diesel engine oil composition |
| CN114774184B (en) * | 2022-04-13 | 2023-03-17 | 新乡市瑞丰新材料股份有限公司 | Gas engine oil complexing agent containing high-base-number borate and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935574A (en) * | 2009-07-03 | 2011-01-05 | 中国石油天然气股份有限公司 | Lubricating oil composition of diesel engine |
| CN102120944A (en) * | 2010-01-08 | 2011-07-13 | 中国石油天然气股份有限公司 | General internal combustion engine oil composition |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935574A (en) * | 2009-07-03 | 2011-01-05 | 中国石油天然气股份有限公司 | Lubricating oil composition of diesel engine |
| CN102120944A (en) * | 2010-01-08 | 2011-07-13 | 中国石油天然气股份有限公司 | General internal combustion engine oil composition |
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