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Internal combustion engine oil and composite additive composition

A technology of compound additives and internal combustion engine oil, which is applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems such as the limitation of the amount of ZDDP added, the anti-oxidation and anti-wear performance of internal combustion engine oil, and the impact on the service life of catalytic converters. good antioxidant effect

Active Publication Date: 2005-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to comply with environmental protection requirements, automobiles are generally equipped with exhaust gas catalytic converters, and the phosphorus in ZDDP seriously affects the service life of catalytic converters, so the oil specification limits the phosphorus content in gasoline engine oil, such as SH / GF-1 It is not more than 0.12%, SJ / GF-2 is not more than 0.10%, SL / GF-3 is not more than 0.10%, SM / GF-4 is not more than 0.08%, so the addition of ZDDP is limited
However, the outstanding problem of reducing the ZDDP content is the decline in the anti-oxidation and anti-wear performance of internal combustion engine oil, which is a technical problem that low-phosphorus internal combustion engine oil must solve.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add the additives in the following proportions to the 10W / 40 base test oil containing only detergent and dispersant to measure the anti-oxidation and anti-wear extreme pressure performance. The test results are shown in Table 1.

[0037] (A) 0.4% of zinc di-primary alkyl dithiophosphate, 0.4% of zinc di-secondary alkyl dithiophosphate;

[0038] (B) molybdenum naphthenate 0.5%;

[0039] (C) Zinc Dialkyl Dithiocarbamate 0.5%

Embodiment 2

[0041] Add the additives in the following proportions to the 10W / 40 base test oil containing only detergent and dispersant to measure the anti-oxidation and anti-wear extreme pressure performance. The test results are shown in Table 1.

[0042] (A) 0.2% of zinc di-primary alkyl dithiophosphate, 0.6% of zinc di-secondary alkyl dithiophosphate;

[0043] (B) molybdenum naphthenate 0.5%;

[0044] (C) Thiophenol type anti-oxidation and anti-wear additive 0.5%

Embodiment 3

[0046] Add the additives in the following proportions to the 10W / 40 base test oil containing only detergent and dispersant to measure the anti-oxidation and anti-wear extreme pressure performance. The test results are shown in Table 1.

[0047] (A) 0.6% of zinc di-primary alkyl dithiophosphate, 0.2% of zinc di-secondary alkyl dithiophosphate;

[0048] (B) molybdenum naphthenate 0.5%;

[0049] (C) Dialkyldiphenylamine antioxidant 0.5%

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PUM

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Abstract

One compound of composite addition agent with oxidation resistance and abrasive resistance applied in internal combustion engine oil contains the following components: (I) phenol antioxidant, the content is 0-35%; (II) amine antioxidant, the content is 0-35%; (IH) sulfur and azote compound, the content is 0-35%; (IV) molybdenum naphthenate or dialkyl molybdenum dithiocarbamate, the content is 10-35%; (V)zinc phosphorodithioic acid, the content is 20-50%; among them, the content of at least one of component (I), (II), (III) is not zero. The above composite addition agent has a content of 1.5-3.5% in the internal combustion engine oil compound. The compound of composite addition agent and internal combustion engine oil provided by this invention has the effects of oxidation resistance, abrasive resistance and extreme pressure, furthermore, with low content of phosphor, which agrees with the demand of SJ gasoline and oil and the standard of the phosphor content for SJ gasoline and oil.

Description

technical field [0001] The invention relates to an internal combustion engine oil composition and a compound additive composition for the internal combustion engine oil. Background of the invention [0002] The lubricating oil for internal combustion engines of automobiles is subjected to the influence of the working environment during work. This environment, such as high temperature, oxidizes and accelerates the oxidation of the oil; impurities such as compounds such as iron in the oil catalyze this oxidation. role. This oxidation of internal combustion engine oil during use is generally controlled to a certain extent by the use of antioxidants. In the past, zinc dialkyldithiophosphate (ZDDP) was added to the internal combustion engine oil to improve the anti-oxidation, anti-wear and anti-corrosion properties of the oil. However, in order to comply with environmental protection requirements, automobiles are generally equipped with exhaust gas catalytic converters, and the...

Claims

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Application Information

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IPC IPC(8): C10M137/10
Inventor 邹红雨姚文涛
Owner CHINA PETROLEUM & CHEM CORP
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