CN102994193A - Gas engine lubricating oil composition - Google Patents
Gas engine lubricating oil composition Download PDFInfo
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- CN102994193A CN102994193A CN2011102725859A CN201110272585A CN102994193A CN 102994193 A CN102994193 A CN 102994193A CN 2011102725859 A CN2011102725859 A CN 2011102725859A CN 201110272585 A CN201110272585 A CN 201110272585A CN 102994193 A CN102994193 A CN 102994193A
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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, especially be 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 satisfy lubricating requirement fixed, portable gas engine.Said composition in the requirement of CF level oil, has lower ash content in satisfying GB11122-2006, 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 giving birth to; use in the situation that Sweet natural gas is extensive, quantity fixed and portable gas engine also increases year by year.
Combustion gas is different from diesel oil, gasoline, and lubricating oil is had particular requirement, and higher such as the temperature of combustion of gas engine combustion gas, lubricating oil is easy to oxidation, so require lubricating oil that preferably oxidation-resistance will be arranged; Therefore the flame transmission speed is slower during fuel gas buring, and exhaust temperature is higher, and the working conditions of the lubricating oil at exhaust valve guide and valve seat place is abominable, requires lubricating oil both to have preferably 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 if scurry into crankcase, so require lubricating oil that preferably anti-oxidative stability and detergent-dispersant performance also should be arranged; Sweet natural gas is not enough at the sedimental cleansing power that the combustion chamber internal combustion produces to lubricating oil, and these settlings (referring generally to carbon deposit) can cause spark advance and the wearing and tearing of valve system, so the ash content that requires lubricating oil to contain can not be too high.
Portable, stationary gas motor has also proposed harsh requirement to lubricants performance simultaneously, and is higher such as 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 the motor car engine take clean automobile fuel (such as LPG, CNG, LNG etc.) as power, have 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 satisfy the service requirements of gaseous propellant engine fully.
Summary of the invention
The objective of the invention is: provide a kind of cost performance good low grey type gas engine oil compositions, can satisfy the requirement of CF level oil among the 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 arbitrarily both mixtures 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 arbitrarily both mixtures 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.
The alkylsalicylate molecular structure is:
R is the alkyl that contains 10～20 carbon atoms in the formula, and M=Ca or Mg, n are non-vanishing positive integer.
Sulfenyl phenolate molecules of salt structure is:
R is the alkyl that contains 10-24 carbon atom in the formula, 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.
Also can contain a small amount of kilfoam in the lubricating oil composition of the present invention.
In lubricating oil composition of the present invention:
Metal detergent satisfies oil product to the requirement of ash content and base number simultaneously in order to improve the detergency of lubricating oil composition, particularly high temperature detergency.
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 have good fuel saving, and the polar compound that oil product is produced in the process of decaying can be good at being dispersed in the oil product, and is unlikely deposition.
In the composition with the multi-functional antioxygen anti-wear agent of phenol, amine type auxiliary antioxidant and liquid macroimolecule amount and zinc dialkyl dithiophosphate compound use, cooperatively interact with different antioxidant mechanisms and jointly to have suppressed the high temperature oxidation of lubricating oil, give the high-temperature oxidation resistance of said composition excellence and suppress the ability that the oil product settling generates.
The binder component that selectivity is good can't solve problem to be solved by this invention fully.The present invention utilizes the principle of well-known binder component interaction, make every effort to make each functional additive except the feature performance benefit of giving full play to himself, satisfying aspect the requirement of engine properties, make as far as possible stronger " synergistic effect " of generation 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, utilize the scorch time of micro coking test evaluation oil product, prove thus its antioxidant property.
Whether satisfy the characteristic of property 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%.
Judge from Bench Evaluation whether lubricating oil composition satisfies 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 satisfies the gas engine oil product to the particular requirement of ash content for low ash design; Have good viscosity-temperature characteristics and low-temperature performance; Has excellent anti-oxidant, anti-Nitrification; Have good detergent-dispersant performance energy and high temperature dispersibility.
Advantage of the present invention and effect further specify by the following examples.
Embodiment
Embodiment 1
Embodiment 1 is total composition 10W-40 gas engine lubricating oil, and component concentration sees Table 1, and the analytical data that obtains is thus listed in table 3.In table 3, other is commercial with oil in order to satisfy the CF level for Comparative Examples.
Table 1
Embodiment 2
Embodiment 2 is total composition 10W-40 gas engine lubricating oil.Component concentration sees Table 2, and the analytical data that obtains is thus listed in table 3, and in table 3, other is commercial with oil in order to satisfy the CF level for Comparative Examples.In addition, the engine rig test that embodiment 2 is 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 one kind low grey gas engine, it is characterized in that: composition comprises (A) at least a metal detergent, (B) at least a ashless dispersant, (C) the anti-rotten anti-wear agent of at least a antioxygen, (D) at least a oxidation inhibitor, (E) viscosity index improver, (F) pour point depressant, (G) base oil, 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.
2. lubricating oil composition according to claim 1 is characterized in that said component (A) is alkylsalicylate or alkyl monosulfide phenates or sulfonate or above arbitrarily both mixtures or three's mixture,
The alkylsalicylate molecular structure is:
R is the alkyl that contains 10～20 carbon atoms in the formula, and M=Ca or Mg, n are non-vanishing positive integer.
Sulfenyl phenolate molecules of salt structure is:
R is the alkyl that contains 10-24 carbon atom in the formula, 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, it is characterized in that said component (B) is high molecular ashless dispersant or polyisobutylene-bis-succinimide ashless dispersant or the two Ashless butyl diimide dispersants of boronation polyisobutenyl or above arbitrarily both mixtures or three's mixture
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 said component (C) is zinc dialkyl dithiophosphate or liquid multi-functional antioxygen anti-wear agent or the mixture of the two;
The molecular structure of zinc dialkyl dithiophosphate is:
The molecular structure of liquid multi-functional antioxygen anti-wear agent is:
5. lubricating oil composition according to claim 1 is characterized in that said component (D) is phenol type antioxidant or amine type oxidation inhibitor or both mixtures;
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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| CN201110272585.9A CN102994193B (en) | 2011-09-14 | 2011-09-14 | Gas engine lubricating oil composition |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589488A (en) * | 2013-11-12 | 2014-02-19 | 广西大学 | Engineering machinery lubricant taking LNG (liquefied natural gas) as fuel |
| 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 |
| CN105567387A (en) * | 2014-10-09 | 2016-05-11 | 中国石油化工股份有限公司 | Stationary gas engine oil composition |
| 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 |
| CN106318559A (en) * | 2015-06-16 | 2017-01-11 | 中国石油化工股份有限公司 | Gas engine lubricating oil composition and preparation method thereof |
| 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 |
| CN110016380A (en) * | 2018-01-08 | 2019-07-16 | 中国石油天然气股份有限公司 | Diesel engine oil composition |
| CN110713859A (en) * | 2018-07-13 | 2020-01-21 | 中国石油天然气股份有限公司 | Diesel engine oil composition |
| CN114774184A (en) * | 2022-04-13 | 2022-07-22 | 新乡市瑞丰新材料股份有限公司 | High-base-number borate-containing gas engine oil complexing agent 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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2011
- 2011-09-14 CN CN201110272585.9A patent/CN102994193B/en active Active
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 |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589488A (en) * | 2013-11-12 | 2014-02-19 | 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 |
| CN105567387A (en) * | 2014-10-09 | 2016-05-11 | 中国石油化工股份有限公司 | Stationary gas engine oil composition |
| CN106318559A (en) * | 2015-06-16 | 2017-01-11 | 中国石油化工股份有限公司 | Gas engine lubricating oil composition and preparation method thereof |
| 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 |
| CN110016380A (en) * | 2018-01-08 | 2019-07-16 | 中国石油天然气股份有限公司 | Diesel engine oil 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 |
| CN110713859A (en) * | 2018-07-13 | 2020-01-21 | 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 |
| CN114774184A (en) * | 2022-04-13 | 2022-07-22 | 新乡市瑞丰新材料股份有限公司 | High-base-number borate-containing gas engine oil complexing agent and preparation method thereof |
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