Lubricating oil for diesel engine

A technology for lubricating oil and diesel engines, applied in lubricating compositions, petroleum industry, etc., can solve problems such as poor shear stability, and achieve the effects of good wear resistance, good compatibility, and good shear stability

Inactive Publication Date: 2015-03-25
LIUZHOU JULONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of lubricating oil for diesel engine, this kind of lubricating oil for diesel engine can solve the problem of poor shear stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Lubricating oil for diesel engines in this embodiment is prepared from the following raw materials by weight: 80 parts of base oil, 7.5 parts of sulfonate detergent, 3 parts of polyisobutylene bis-succinimide, 5 parts of p-diisooctyl diphenylamine , 2 parts of methyl silicone oil, 6 parts of tricresyl phosphate.

[0015] The preparation method is as follows: transfer the base oil into the reaction kettle, heat up to 50°C, stir at a constant speed, add sulfonate detergent, polyisobutylene bis-succinimide, p-diisooctyl diphenylamine, and methyl silicone oil in sequence and tricresyl phosphate, heated to 60°C, and stirred at a constant speed for 40 minutes.

Embodiment 2

[0017] Lubricating oil for diesel engines in this embodiment is prepared from the following raw materials: 90 parts of base oil, 5 parts of sulfonate detergent, 5 parts of polyisobutylene bis-succinimide, and 1 part of p-diisooctyl diphenylamine , 3.5 parts of methyl silicone oil, 2 parts of tricresyl phosphate.

[0018] The preparation method is as follows: transfer the base oil into the reaction kettle, heat up to 45°C, stir at a constant speed, add sulfonate detergent, polyisobutylene bis-succinimide, p-diisooctyl diphenylamine, and methyl silicone oil in sequence and tricresyl phosphate, heated to 55°C, and stirred at a constant speed for 38 minutes.

Embodiment 3

[0020] Lubricating oil for diesel engines in this embodiment is prepared from the following raw materials by weight: 100 parts of base oil, 10 parts of sulfonate detergent, 7 parts of polyisobutylene bis-succinimide, and 8 parts of p-diisooctyl diphenylamine , 5 parts of methyl silicone oil, 10 parts of tricresyl phosphate.

[0021] The preparation method is as follows: transfer the base oil into the reaction kettle, raise the temperature to 50°C, stir at a constant speed, add sulfonate detergent, polyisobutylene bis-succinimide, p-diisooctyl diphenylamine, and methyl silicone oil in sequence and tricresyl phosphate, heated to 60°C, and stirred at a constant speed for 40 minutes.

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PUM

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Abstract

The invention discloses lubricating oil for a diesel engine. The lubricating oil is prepared from the following raw materials in parts by weight: 80-100 parts of base oil, 5-10 parts of a sulfonate detergent, 3-7 parts of a dispersing agent, 1-8 parts of an antioxidant, 2-5 parts of an anti-foaming agent and 2-10 parts of tricresyl phosphate, wherein the base oil is type-I and type-II lubrication oil base oil classified according to the API standard; the sulfonate detergent is calcium sulfonate with a high alkali value of 380-400mgKOH/g; the dispersing agent is polyisobutene disuccinimide; the antioxidant is p-di-iso-octyldiphenylamine; the anti-foaming agent is methyl silicon oil. The lubricating oil for the diesel engine is good in component compatibility, relatively good in detergency and dispersibility, anti-oxidation corrosion, wearing resistance and shearing stability, and ensures that an oil product still has appropriate viscosity when the engine is in a low temperature, high temperature and high shearing environment.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a lubricating oil for diesel engines. Background technique [0002] The rapid development of the economy has led to the rapid development of engine technology. Diesel engines are used as engines for construction machinery vehicles and commercial vehicles, and they are constantly being updated. At present, direct injection technology and turbocharging technology are widely used in diesel engines to increase power. Exhaust gas recirculation technology and piston optimization are adopted. technologies to reduce engine emissions. The application of these technologies requires diesel engines to be used together with more stringent requirements for diesel engine lubricating oils in terms of cleanliness, dispersion, anti-oxidation, and anti-wear. Although the diesel engine adopts the above-mentioned new technology, the lubricating oil supporting the diesel engine is still mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/25C10N30/06C10N30/10C10N30/04
Inventor 苏志强谢宇强
Owner LIUZHOU JULONG TECH
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