Petroleum-engine oil composition and application thereof

A technology for gasoline engine oil and composition, applied in the directions of lubricating composition, petroleum industry, etc., can solve problems such as poor anti-wear performance of gasoline engine oil, and achieve the effects of excellent anti-wear performance, good technical effect and good lubricity

Inactive Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is the problem of poor anti-wear

Method used

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  • Petroleum-engine oil composition and application thereof
  • Petroleum-engine oil composition and application thereof
  • Petroleum-engine oil composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] According to the parts by weight in Table 1, take by weighing respectively 4 grams of low-basic value synthetic calcium sulfonate, 1 gram of super-basic value synthetic magnesium sulfonate, 2 grams of nitrogen-boron dispersant, 2 grams of thiophosphobutyloctyl zinc salt, MoDTC 2 grams, 1 gram of MoDTP, 8 grams of ethylene-propylene copolymer, 1 gram of polymethacrylate, 0.5 grams of methyl silicone oil, 78.5 grams of American Petroleum Institute (API) Group III base oil, heated and stirred at 55 ° C for 1 hour to Completely homogeneous, prepared test oil for later use.

[0029]The anti-wear performance of the composition was evaluated by the determination method of SRV friction coefficient (Q / SH 037.08.044). The SRV friction coefficient test is to test the wear performance of the oil under the conditions of load 50N, temperature 90°C, time 1 hour, frequency 50Hz, stroke 0.5mm. It is required that the SRV friction coefficient of the oil is not greater than 0.07. The te...

Embodiment 2~15

[0034] Prepare the engine oil composition according to each step of [Example 1], but change the consumption and composition of each component. The composition of the engine oil composition is shown in Table 1, and the experimental results are shown in Table 2.

[0035] Table 1

[0036]

[0037] Continued Table 1

[0038]

[0039] Table 2

[0040] Example

[0041] The SRV friction coefficient must be no greater than 0.07 to meet the oil requirements of the engine manufacturer. From the experimental results in the table, it can be seen that the SRV coefficient of the oil does not meet the requirements when MoDTC is not included.

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Abstract

The invention relates to a petroleum-engine oil composition and application thereof, and mainly aims to solve the problem of poor wear resistance of petroleum and engine oil existing in the prior art. The problem is well solved by adopting the technical scheme that the petroleum-engine oil composition comprises the following components in parts by weight: (a) 1-20 pars of a detergent, a dispersant or a mixture thereof, (b) 0.5-15 parts of an anti-oxygen wear-resistant agent, (c) 1-20 parts of a viscosity index modifier, (d) 0.01-5 parts of a pour point depressant, (e) 0.001-3 parts of an anti-foaming agent, and (f) 60-95 parts of base oil, wherein the anti-oxygen wear-resistant agent is selected from at least one of 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl mixed phenol, alkylated arylamine, zinc butyl octyl dithiophosphate, base zinc salt of dioctyl thiophosphate, di(octadecyl)-3,3-thiodipropionate, zinc(II)dibutyl dithiocarbamate, thiadiazole, molybdenum dithiocarbamate or molybdenum dialkyldithiophosphat. The petroleum-engine oil composition can be applied to industrial production of the petroleum-engine oil composition.

Description

technical field [0001] The invention relates to a gasoline engine oil composition and its application. Background technique [0002] In gasoline engines, scratches are prone to occur at the contact points of the valve system, especially the friction between the cam and the tappet. Due to the spring of the valve and the inertia of the entire valve system, the pressure between the contact points of the engine valve system is very high, and the lubrication in these areas is boundary lubrication, so the requirements for the anti-wear ability of the oil are very high. [0003] Relevant work has been carried out on gasoline engine oil compositions at home and abroad. Document CN101982534A discloses an energy-saving long-life gasoline engine oil, the formulation of which consists of: synthetic base oil, composite antioxidant, metal cleaner, ashless dispersant, nano-scale friction modifier, viscosity index improver, and pour point depressant. Document CN101838575A discloses an add...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/25C10N30/06C10N30/04C10N30/10
Inventor 郑金花杨慧青王亚萍
Owner CHINA PETROLEUM & CHEM CORP
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