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A kind of gas engine lubricating oil of naphthylamine antioxidant and preparation method thereof

An antioxidant and gas engine technology, applied in the field of gas engine lubricating oil, to achieve the effect of improving the base oil grade, improving high temperature oxidation resistance, and good alkali value retention

Active Publication Date: 2022-01-25
DONGFENG COMML VEHICLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the prior art, the invention patent with the application number CN201510659138.7 titled "A Lubricating Oil Composition for Gas Powered Natural Gas Compressor" discloses a linear viscosity index gas engine oil blended with Class II mineral base oil. Aminothioester antioxidants, no naphthylamine antioxidants

Method used

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  • A kind of gas engine lubricating oil of naphthylamine antioxidant and preparation method thereof
  • A kind of gas engine lubricating oil of naphthylamine antioxidant and preparation method thereof
  • A kind of gas engine lubricating oil of naphthylamine antioxidant and preparation method thereof

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preparation example Construction

[0062]The gas engine lubricating oil preparation method of naphthylamine antioxidant of the present invention comprises the steps:

[0063] 1) According to the proportion of the formula, add dispersant, antioxidant, detergent, and anti-wear agent in sequence, and finally add defoamer and continue to stir. The stirring temperature is 60-65°C and the stirring time is 1-3h to obtain the product a;

[0064] 2) Add the base oil into the blending kettle, start stirring and raise the temperature to 60-65°C and maintain this temperature, add viscosity index agent and pour point depressant, and continue to stir and react, the stirring speed is 70-80r / min, and the stirring time is 1- 3h, obtain product b;

[0065] 3) Finally, add the product a to the product b, continue to stir the reaction, the stirring temperature is 60-65°C, and the stirring time is 1-3h.

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Abstract

The invention discloses a gas engine lubricating oil with naphthylamine antioxidant and a preparation method thereof. The gas engine lubricating oil with naphthylamine antioxidant is composed of the following components in parts by mass: antioxidant 1.5- 2.5 parts, detergent 1-6 parts, anti-wear agent 0.2-3 parts, dispersant 1-12 parts, viscosity index agent 0.1-17 parts, pour point depressant 0.01-4 parts, defoamer 0.003-0.004 parts, basic 75.3-83.7 parts of oil; wherein, the antioxidant is formed by mixing naphthylamine and zinc dialkyldithiophosphate according to the ratio of parts by mass (0.5-2): (1-1.5); the detergent is Calcium sulfonate and magnesium sulfonate are mixed according to the ratio of parts by mass (0.5-4): (0.5-2). The gas engine lubricating oil of the naphthylamine antioxidant of the present invention improves the high temperature oxidation resistance of the oil product, makes the oil product have a longer service life, thereby prolonging the oil change mileage of the gas engine oil.

Description

technical field [0001] The invention belongs to the technical field of gas engine lubricating oil, and in particular relates to a gas engine lubricating oil with naphthylamine antioxidant and a preparation method thereof. Background technique [0002] Most heavy-duty gas engines are based on diesel engines converted to spark plug ignition. Compared with diesel engines, gas engines have higher combustion temperatures, and more severe oxidation results in increased sludge and viscosity. Gas engine oil is required to have better oxygen resistance than diesel engine oil; There are no heavy components, so there is no sooting in gas engines; the gas is drier, and lubricating oil ash reduces valve train wear, but ash deposits can lead to premature combustion, so ash limits must be optimized. The performance comparison between gas engine oil and diesel engine oil is shown in Table 1. [0003] Table 1 Performance comparison between gas engine oil and diesel engine oil [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N30/10C10N30/08C10N30/04C10N40/25
CPCC10M169/044C10M2205/04C10M2205/06C10M2205/143C10M2209/084C10M2215/06C10M2215/28C10M2219/044C10M2219/068C10M2223/045C10M2229/041
Inventor 赵鹏吴章辉何大礼张里郑洪源赵云萍孟庆菊
Owner DONGFENG COMML VEHICLE CO LTD
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