Lubricating oil additive composition

A technology of lubricating oil additives and compositions, applied in the directions of lubricating compositions, additives, petroleum industry, etc., can solve the problems of increasing lubricating oil viscosity, shortening oil change period, wear of piston rings and cam tappets, etc. The effect of oxidation, excellent dispersion properties

Active Publication Date: 2006-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, diesel engines widely adopt direct injection technology, increase power, and adopt delayed fuel injection technology. , resulting in wear of piston rings, cams, tappets, etc., shortening the oil change period

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A lubricating oil additive composition of the present invention was prepared, and the additive composition was added to a 10W / 40 thickened base oil at a dose of 11w%. Soot dispersibility of oil was evaluated by countercurrent viscometry. The countercurrent method is: add 3% acetylene carbon black to the test oil, stir for 10 minutes at 68±2°C, 10000±100 rpm, and measure the viscosity of the oil sample at 60°C with a countercurrent viscosity tube; The test oil of carbon black is also stirred under the same conditions to measure its kinematic viscosity at 60°C, and calculate the viscosity growth rate. The smaller the growth rate, the better the dispersibility of the oil sample.

[0026] Example 1

[0027] It can be seen from the data in the above table that the dispersing performance of Example 1 is better than that of Comparative Example 1, and it has better dispersing performance for soot.

Embodiment 2

[0029] A lubricating oil additive composition of the present invention is prepared, and the additive composition is added to a 10W / 40 thickened base oil at a dose of 12w%. Use ASTM D5968 to evaluate the corrosion performance of oil to metal. ASTMD5968 is the performance stipulated in the specifications of oil products of CF-4 and above grades.

[0030] Example 2

[0031] Test data show that the invention has excellent corrosion resistance to metals.

Embodiment 3

[0033] A lubricating oil additive composition of the present invention is prepared, and the additive composition is added to a 10W / 40 thickened base oil at a dose of 10w%. Oxidation induction period (PDSC) was used to evaluate the antioxidant properties of oils. The longer the induction period, the better the oil oxidation performance.

[0034] PDSC conditions: DUPONT2100 differential thermal scanning thermal analyzer, test oil volume: 5μL, O 2 Pressure: 1MPa, heating rate: 10°C / min, until 210°C, O 2 Flow: 150ml / min.

[0035] Example 3

[0036] The test data shows that the examples of the present invention have better oxidation resistance than the comparative examples.

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PUM

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Abstract

The lubricating oil additive composition consists of: A. at least one of ash-less high molecular weight polyisobutylene butanimide dispersant with number average molecular weight of 1500-4000 in 25-50 wt%; B. at least one of borated polyisobutylene butanimide dispersant with boron content of 0.05-4.0 wt% in 3-18 wt%; C. at least one of polyisobutylene butanimide dispersant coupled with phenol in 2-18 wt%; D. at least one of metal detergent in 25-45 wt%; and E. at least one of antioxidant anticorrosive additive in 3-18 wt%. The composition has excellent soot dispersing performance, endows oil product with excellent antioxidant and anticorrosive performance, and is added into type-I and type-II base oil or synthetic base oil with high viscosity index to compound CF-4 or higher diesel engine oil.

Description

technical field [0001] The invention relates to an engine lubricating oil additive composition, in particular to a lubricating oil additive composition for high-grade diesel engines. Background technique [0002] In recent years, with the continuous upgrading of internal combustion engine oils, the performance requirements of oil products such as cleanliness, dispersion, anti-oxidation, and anti-corrosion are getting higher and higher. In particular, diesel engines widely adopt direct injection technology, increase power, and adopt delayed fuel injection technology. , causing wear of piston rings, cams, tappets, etc., shortening the oil change period. In order to meet the needs of development, modern diesel engine oils have developed from CD grades to CF-4, CG-4, CH-4 and CI-4 grades. The higher the grade of oil, the more stringent the requirements for the dispersion of soot. In high-grade diesel engine oil, the above-mentioned dispersing performance on soot is mainly solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M149/02
Inventor 张倩杨燕及风明
Owner CHINA PETROLEUM & CHEM CORP
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