A low-ash, long-life, environmentally friendly city gas engine oil

A gas engine, long-life technology, applied in the field of environmentally friendly urban gas engine oil, low ash, long life, can solve the problems of shortened service life of lubricating oil, spark plug pollution, valve seat collapse, etc.

Active Publication Date: 2018-08-14
北京雅士科莱恩石油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main difference between the gas engine and the fuel engine is that the temperature of the gas engine is higher when it is working, it is easy to generate more nitrogen oxides, the lubricating oil is easy to nitrate, and the service life of the lubricating oil is shortened; the lubrication and cooling effect of the gas fuel on the engine is poor, Lead to intake and exhaust valve wear and valve seat collapse; deposits formed by high ash on the piston top and cylinder produce carbon deposits, resulting in spark plug pollution leading to early ignition and increased wear between the cylinder wall and piston ring; therefore, gas engines are required The lubricating oil used has higher thermal oxidation stability and detergency and dispersibility than the lubricating oil used in fuel engines

Method used

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  • A low-ash, long-life, environmentally friendly city gas engine oil
  • A low-ash, long-life, environmentally friendly city gas engine oil
  • A low-ash, long-life, environmentally friendly city gas engine oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0070] According to the proportioning of raw materials in Table 12, and prepare low ash content, long life, environmental protection city gas engine oil by following method.

[0071] Mix the base oil evenly in proportion. Add 50% of the uniformly mixed base oil into the kettle, stir and heat up to 50°C, add polymethacrylate (12C), and stir for 0.5h; dilute polymethacrylate (10C) with 10% mixed base oil After that, add it into the kettle, stir and heat up to 50°C, and stir for 1.5 hours; mix calcium salicylate with medium alkali value, magnesium naphthenate with medium alkali value, magnesium naphthenate with low alkali value, high molecular weight polyisobutylene succinimide, Naphthenate, diluted with 10% mixed base oil and added to the kettle, heated to 65°C, fully mixed by stirring and static mixer, time 1.5h; added phenolic ester type ashless antioxidant, 4,4 '-Dioctyl diphenylamine and thiadiazole were fully mixed by stirring and static mixer for 0.5h; the above processes...

Embodiment 4

[0075] Low ash content, long life, environmental protection city gas engine oil raw materials (parts by weight): 3.6 parts of calcium alkylbenzene sulfonate, 3.6 parts of sulfurized calcium alkylphenate, 4.8 parts of borated polyisobutylene succinimide, polymethyl 7 parts of acrylate, 0.8 part of phenolic ester type ashless antioxidant, 0.4 part of 4,4'-dioctyldiphenylamine; 0.01 part of N,N-di(dodecyl)alkyl dithiocarbamate molybdenum; 0.003 parts of methyl silicone oil; 0.2 parts of thiadiazole; 20 parts of 150N base oil, 25 parts of 500N base oil, 25 parts of polyalphaolefin, 25 parts of trinonyl trimellitate, 5 parts of 150BS bright oil.

[0076] The phenolic ester type ashless antioxidant consists of 50wt% thiodiethylene bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] and 50wt% hexanediol bis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] obtained by stirring and mixing uniformly.

[0077] Low ash content, long life, environmental protection city gas engine oil ...

Embodiment 5

[0079] Prepare low ash content, long life, environment-friendly city gas engine oil by the method for embodiment 4, difference only is: described phenolic ester type ashless antioxidant is only thiodiethylene bis[3-(3,5 -di-tert-butyl-4-hydroxyphenyl)propionate]. Obtain the low ash content of embodiment 5, long life, environment-friendly city gas engine oil.

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Abstract

The invention discloses low-ash-content, long-service-life and environment-friendly urban gas engine oil. The oil is prepared from, by weight, 5-20 parts of mixture, 5-10 parts of polymethacrylate, 0.1-1 part of phenol ester type ash-free antioxidant, 0.1-1 part of 4,4'-dioctyl diphenylamine, 0.005-0.02 part of organic molybdenum, 0.002-0.005 part of anti-foaming agent, 0.1-0.5 part of thiadiazole, 15-25 parts of 150N base oil, 20-30 parts of 500N base oil, 20-30 parts of poly alpha-olefin, 20-30 parts of trimellitate and 20-30 parts of bright stock. The composition of the oil is optimized, different kinds of clearing agents, ash-free dispersing agents, antioxidants, base oil and the like are adopted, it can be guaranteed that no excessive ash is formed during use, the lubricating requirement of an intake and exhaust system can be met, and continuous neutralizing capacity is achieved; a small number of generated carbon deposits are soft and easy to remove, and the cleanliness of a piston is greatly improved; under the thermal oxidation condition, the viscosity of the lubricating oil is slightly increased, a nitration trend is reduced, and the oil replacement period is prolonged.

Description

technical field [0001] The invention relates to the field of engine lubricating oil, in particular to an oil for urban gas engines with low ash content, long service life and environmental protection. Background technique [0002] Petroleum energy is still the main energy used by countries all over the world, but the air pollution caused by the exhaust emissions of fuel engines is very serious, especially in the case of urban traffic congestion, stop and go causes more serious pollution, extreme conditions It is also one of the important reasons for the formation of smog. In air pollution, more than 50% of carbon monoxide, nitrogen oxides, and organic volatile hydrocarbons come from vehicle exhaust emissions. Compared with liquid fuels, the advantages of gaseous fuels are that they can greatly reduce fuel costs and reduce pollution caused by vehicle exhaust emissions. They are called clean fuels. The main difference between the gas engine and the fuel engine is that the te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N40/25C10N30/04C10N30/08C10N30/10
CPCC10M169/044C10M2203/1025C10M2205/02C10M2207/146C10M2207/16C10M2207/281C10M2207/283C10M2207/2855C10M2209/0845C10M2215/064C10M2217/024C10M2219/06C10M2219/068C10M2219/106C10M2229/041C10N2030/08C10N2030/10C10N2030/52C10N2040/25C10N2010/12C10N2010/04C10N2030/18
Inventor 赫常山王宜献肖颖蔡德华
Owner 北京雅士科莱恩石油化工有限公司
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