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Diesel engine lubricant composition and preparation method and application thereof

A lubricating oil composition and diesel engine technology, applied in lubricating compositions, petroleum industry, organic chemistry, etc., can solve problems such as low emissions, clogged oil filters, cylinder liner piston rings, friction pair wear of valve groups, etc.

Active Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diesel engines use technologies such as direct injection, delayed fuel injection, high-top ring pistons, and exhaust gas recirculation (EGR) to meet the requirements of high power and low emissions. The adoption of these technologies increases the soot content in the oil, which is likely to cause oil Viscosity increases, oil filter is blocked, and at the same time, friction pairs such as cylinder liner, piston ring and valve group are worn away

Method used

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  • Diesel engine lubricant composition and preparation method and application thereof
  • Diesel engine lubricant composition and preparation method and application thereof
  • Diesel engine lubricant composition and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0091] In a 500ml flask with an electromagnetic stirrer (stirring speed: 200rpm), fill with nitrogen protection, add 150ml of methanol and 0.01mol of acetic acid, fully cool in an ice-water bath, and then add 0.1mol of 2,6-di tert-butylphenol, 0.2 mol of formaldehyde and 0.3 mol of benzene. After reacting for 1 hour, remove the ice-water bath, heat up to 25°C, heat to 75°C and continue to reflux for 2 hours, then stop the reaction, evaporate the solvent from the reacted system at 0.03MPa and 50°C, then add 250ml of ethyl acetate, and Transfer to a separatory funnel, wash with 100ml of distilled water (twice) and 50ml of saturated brine, and add 10g of anhydrous calcium chloride to dry at 25°C for 20min, and evaporate the filtered filtrate at 40°C and 0.03MPa solvent to obtain the intermediate product M1.

[0092] In a 500ml flask with an electromagnetic stirrer (stirring speed is 200rpm), fill with nitrogen protection, add 150ml of dry tetrahydrofuran, then dissolve the inter...

Embodiment 10-12

[0118] Examples 10-12 and Comparative Examples 10-12.

Embodiment 10

[0119] Examples 10-13 are the composition of the diesel engine lubricating oil of the present invention. Each component was prepared to obtain a CH-4 diesel engine lubricating oil composition (Example 10 and Example 11) and a CI-4 diesel engine lubricating oil composition (Example 12) with a viscosity grade of 15W-40.

[0120] Examples 10-12 and Comparative Examples 10-12 have the same formula composition except for the dispersant, and their respective composition ratios are shown in Table 6, and the results of the carbon black dispersion test are shown in Table 7.

[0121] Table 6

[0122]

[0123] Table 7

[0124] oil sample Carbon black dispersion test viscosity growth rate / % Example 10 65 Example 11 63 Example 12 50 Comparative example 10 81 Comparative example 11 79 Comparative example 12 69

[0125] As can be seen from Table 6 and Table 7, in the case of the same combination of anti-oxidation type ashless dispersan...

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PUM

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Abstract

The invention provides a diesel engine lubricant composition and a preparation method and application thereof. The diesel engine lubricant composition is made from A) antioxidant structurally shown in formula (I); B) antioxidant polyisobutylene succinimide ashless dispersant; C) polyisobutylene mono-succinimide; D) polyisobutylene bis-succinimide; E) a mixture of sulfates and sulfurized alkyphenates; F) zinc dialkyl dithiophosphates; G) a major amount of lubricant base oil. The lubricant composition of the invention has excellent oxidization resistance, soot dispersibility, and high-temperature cleaning performance, and can meet the requirement on high-performance diesel engine lubricants of levels CH-4 and CI-4.

Description

technical field [0001] The invention relates to a diesel engine lubricating oil composition. Background technique [0002] In recent years, the increasingly stringent emission regulations have prompted engine manufacturers to adopt new technologies, and also promoted the continuous upgrading of internal combustion engine oils. The performance requirements of oil products in terms of anti-oxidation, dispersion, cleaning and anti-wear are getting higher and higher. The power of modern diesel engines increases, the heat load increases, and the use of EGR increases the temperature of the engine oil, and the requirements for the oil's anti-oxidation ability and high-temperature detergency are also constantly increasing. The engine test to evaluate its high temperature oxidation resistance in the API diesel engine lubricating oil specification has been developed from 64 hours in program IIIE, to 80 hours in program IIIF, to 100 hours in current program IIIG, and the requirement fo...

Claims

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Application Information

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IPC IPC(8): C10M133/44C10M161/00C07D249/18C10N40/25C10N30/10
Inventor 徐杰陈政武志强孙洪伟张倩徐未段庆华夏青虹张峰
Owner CHINA PETROLEUM & CHEM CORP
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