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Lubricating oil compsn.

A lubricating oil composition and the technology of the composition, which are applied in directions such as lubricating compositions, can solve problems such as the inability to meet the specification requirements of gasoline engine oil, and achieve the effect of good anti-oxidation performance

Inactive Publication Date: 2003-05-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] "Xinjiang Petroleum Science and Technology" magazine, Volume 7, No. 2, reported a formula of ERB and ERC two-stroke gasoline engine oil, which is characterized in that low alkali value magnesium naphthenate, ashless dispersant and ashless antioxidant are used. The oil composition is a special lubricating oil for two-stroke gasoline engines and does not meet the specifications for gasoline engine oils, diesel engine oils or gas engine oils

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Lubricating oil composition I comprises:

[0041] 10g Low base number magnesium naphthenate T111A

[0042] 12g Medium base number magnesium naphthenate T111B

[0043] 6g sulfurized calcium alkylphenate

[0044] 35g succinimide dispersant

[0045] 13g zinc dialkyldithiophosphate

[0046] 3g copper organic carboxylate T542

[0047] 90g of dispersed propylene ethylene copolymer viscosity index improver

[0048] 5g polyalphaolefin pour point depressant

[0049] 1.25ml antifoaming agent (1% kerosene thinner)

[0050]875g HVI150 neutral base oil

[0051] 30g HVI90BS neutral base oil

[0052] The properties of HVI150 neutral base oil and HVI90BS neutral base oil are listed in Table 1.

[0053] Table 1 Base oil properties

[0054] Item HVI150 HVI90BS100℃ kinematic viscosity, mm 2 / s 5.18 19.2340°C kinematic viscosity, mm 2 / s 29.62 238.2 viscosity index 104 94 low temperature dynamic viscosity (-20 ℃), mPa s 2100 - flash point...

Embodiment 2

[0057] Compared with lubricating oil composition I, lubricating oil composition II uses thiadiazole auxiliary antioxidant T561 instead of organic carboxylate copper auxiliary antioxidant T542.

[0058] The thin layer oxidation induction period of lubricating oil composition II is 181min, the low-speed four-ball wear is 0.57mm, and the weight loss of L-38 bearing bush is 32.3mg.

Embodiment 3

[0060] Lubricating Oil Composition III is compared to Lubricating Oil Composition I with the removal of low base magnesium naphthenate.

[0061] The thin-layer oxidation induction period of lubricating oil composition III is 113 minutes, and the coke weight in the coke plate test is 145 mg.

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Abstract

A composite lubricaitng oil conforming with the specification of GB 11121 and API SF / CD universal lubricating oil of IC engine contains neutral basic oil, magnesium naphthenate as cleaning agent, alkylphenol calcium sulfide, polyisobutylene butanediimide, zinc dialkyldithiophosphate, auxiliary antioxidizing agent, viscosity index improver, pour depressor, and anti-foaming agent.

Description

technical field [0001] The present invention relates to an engine lubricating oil composition, in particular to a general internal combustion engine lubricating oil composition for gasoline engines, diesel engines or gas engines. Background technique [0002] Gasoline engine oil and diesel engine oil are widely used lubricating oils. According to the requirements of different specifications, they have corresponding oxidation resistance, corrosion resistance, wear resistance, corrosion resistance, acid neutralization ability and high temperature detergency. There are a lot of reports and patents about gasoline engine oil and diesel engine oil composition, but all do not relate to the composition of relevant magnesium naphthenate. [0003] "Lubricating Oil" magazine, Volume 14, Issue 2, reported a SE-grade gasoline engine oil formula, which is characterized by the use of calcium naphthenate and another metal detergent, succinimide ashless dispersant, dialkyl Zinc dithiophosph...

Claims

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Application Information

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IPC IPC(8): C10M157/04
Inventor 华伦松严浩
Owner PETROCHINA CO LTD
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