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Lubricating oil

A technology of lubricating oil and base oil, applied in the field of lubricating oil, can solve problems such as engine performance and life impact

Inactive Publication Date: 2010-07-07
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method of reducing sludge commonly used at home and abroad is to add a dispersant, such as succinimide dispersant, to lubricating oil. However, due to the characteristics of succinimide itself, succinimide is used as a dispersant When the agent is used, the effect of reducing the amount of sludge formation is not ideal, which seriously affects the performance and life of the engine

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0024] This example is used to illustrate the lubricating oil disclosed in the present invention.

[0025] Add 88.9 parts by weight of base oil, 6.1 parts by weight of dispersant and 5 parts by weight of detergent into a mixer, and mix at 70°C for 90 minutes to prepare lubricating oil A1.

[0026] Wherein, the dispersant used in this embodiment is 3.6 parts by weight of succinimide (T161 produced by Beijing Furunsi Chemical Co., Ltd., with a weight average molecular weight of 800) and 2.5 parts by weight of succinate, and the detergent is 5 parts by weight of calcium salicylate.

[0027] The following performance tests were carried out on the lubricating oil A1 according to the program IIIF engine bench (64h) (ASTM STP 315 I-II) and the program VG engine bench (ASTM STP 315HIII). The test methods and results are shown in Table 1.

[0028] Table 1

[0029]

Embodiment 2

[0031] This example is used to illustrate the lubricating oil disclosed in the present invention.

[0032] Add 91.3 parts by weight of base oil, 4.7 parts by weight of dispersant and 4 parts by weight of detergent into the mixer, and mix at 80°C for 90 minutes to prepare lubricating oil A2.

[0033] Among them, the dispersant used in this embodiment is 3.2 parts by weight of succinimide (T161 produced by Beijing Furunsi Chemical Co., Ltd., with a weight average molecular weight of 1500) and 1.5 parts by weight of succinate (Lubrizol The LZ936 produced by Lanlian Additive Co., Ltd. has a weight-average molecular weight of 1000), and the detergent is 1.8 parts by weight of calcium salicylate, 1.2 parts by weight of calcium sulfonate, and 1 part by weight of sulfurized calcium alkylphenate.

[0034] The following performance tests were carried out on the lubricating oil A2 according to the program IIIF engine bench (64h) (ASTM STP 315 I-II) and the program VG engine bench (ASTM S...

Embodiment 3

[0038] This example is used to illustrate the lubricating oil disclosed in the present invention.

[0039]92.4 parts by weight of base oil, 4.9 parts by weight of dispersant and 2.7 parts by weight of detergent were added into the mixer, and mixed at 80°C for 90 minutes to obtain lubricating oil A3.

[0040] Among them, the dispersant used in this embodiment is 3.6 parts by weight of succinimide (T161 produced by Beijing Furunsi Chemical Co., Ltd., with a weight average molecular weight of 2000) and 1.3 parts by weight of succinate (Lubrizol The LZ936 produced by Lanlian Additive Co., Ltd. has a weight-average molecular weight of 1500), detergent is 1.4 parts by weight of magnesium salicylate with a base value of 300mgKOH / g, 0.8 parts by weight of calcium sulfonate with a base value of 150mgKOH / g, 0.5 parts by weight of A calcium sulfate alkylphenate with a base number of 260 mgKOH / g.

[0041] The following performance tests were carried out on the lubricating oil A3 accordin...

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Abstract

The invention discloses a lubricating oil, which contains base oil, a detergent and a dispersing agent and an additive, wherein the additive is unnecessary; the dispersing agent contains butanimide and ester succinate. With the adoption of the lubricating oil in an engine, the oil sludge generation can be greatly reduced in the using process of the lubricating oil, and the lubricating oil can perform stable functions for a long time, so as to have good maintenance function for the engine.

Description

【Technical field】 [0001] The invention relates to a lubricating oil, especially a lubricating oil for a gasoline engine. 【Background technique】 [0002] In congested modern traffic, cars often run at low speeds and start and stop frequently, resulting in an increased tendency to form varnish and sludge deposits in lubricating oils. A large amount of water vapor produced by the engine is partially condensed to produce a large amount of emulsified low-temperature oil sludge. The increase of sludge in the engine oil will block the oil pipeline and filter screen, resulting in insufficient oil supply to the engine, increased wear and tear, and even failure. Therefore, in the formulation research of lubricating oil, the low-temperature sludge problem of lubricating oil is very important. [0003] The main components of sludge are carbon, abrasive metal particles, lead compounds, water, combustion products, and gasoline. Its formation is related to the working conditions of the ...

Claims

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Application Information

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IPC IPC(8): C10M129/68
Inventor 杨杰朱志坚
Owner BYD CO LTD
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