Diesel engine lubricating oil composition and preparation method thereof

A technology of lubricating oil composition and diesel engine, which is applied in the direction of lubricating composition, petroleum industry, additives, etc., and can solve problems such as increased soot content, accelerated oil viscosity growth, engine filter blockage, etc.

Active Publication Date: 2022-02-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the EGR device can reduce the emission requirement of NOx by sending the cooled engine exhaust gas to the combustion chamber for secondary combustion. The increase of the soot content will accelerate the viscosity growth of the oil, increase the wear of the engine, and cause problems such as engine filter blockage. Therefore, there are higher requirements for the soot dispersing ability of diesel engine oil

Method used

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  • Diesel engine lubricating oil composition and preparation method thereof
  • Diesel engine lubricating oil composition and preparation method thereof
  • Diesel engine lubricating oil composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0025] Preparation Example 1 Preparation of Antioxidant and Antiwear Agent

[0026] In a 250ml three-necked flask with a stirring device, add 141.6g (0.4mol) of diisooctyl dithiophosphoric acid, keep the temperature at 60°C, and add 5.7g of 30% hydrogen peroxide solution dropwise within 30 minutes (equivalent to hydrogen peroxide is 0.05 mol), continue to react for 2 hours after the dropwise addition, then raise the temperature to 70°C, add 13.4g (0.165mol) of zinc oxide, raise the temperature to 75-90°C and react for 3-5 hours, continue to heat up to 95-105°C, and depressurize The residual moisture was distilled off, and the antioxidant and anti-wear agent of the present invention was obtained by filtration, which was designated as sample 1.

preparation example 2-4

[0027] Preparation Example 2-4 Preparation of Antioxidant and Antiwear Agent

[0028] According to the method of Preparation Example 1, the antioxidant and anti-wear agent of the present invention is prepared by using sulfuric acid of different structures, different molar ratios of sulfuric acid to hydrogen peroxide, and different molar ratios of hydrogen peroxide to zinc oxide, which are respectively recorded as samples 2-4 , the reaction conditions are shown in Table 1.

[0029] Contrast Antioxidant and Antiwear Agents 1-4

[0030] Also listed comparative sample 1-4 in table 1, wherein comparative sample 1 is the zinc diisooctyl dithiophosphate (C8 primary alcohol ZDDP) of commercialization, domestic code name is T203; Comparative sample 2 is commercialized Butyl / isooctyl zinc dithiophosphate (C4 / C8 primary alcohol ZDDP), the domestic code is T202; comparative sample 3 is C3 / C6 secondary alcohol ZDDP, prepared according to the conventional ZDDP method; comparative sample 4 ...

Embodiment 1～4

[0051] Embodiment 1~4 and comparative example 1~7

[0052] The antioxidant and antiwear agents of Preparation Examples 1 to 4 of the present invention and the other four comparative antioxidant and antiwear agents were mixed at 70°C for 1 hour according to the compositions and proportions in Table 2 to obtain the antioxidative and antiwear agents of Examples 1 to 4. Lubricating oil composition and the lubricating oil composition of Comparative Examples 1-4. Wherein, based on the total mass of the lubricating oil composition, the addition amount of the antioxidant and anti-wear agent is 2.0%. The oil sample without antiwear agent was taken as the blank sample, i.e. comparative example 5. Examples 1-4 and Comparative Examples 1-5 are the same except for the anti-wear agent. Comparative examples 6 and 7 are API CJ-4 refined oils sold on the market.

[0053] Using the lubricating oil compositions of Examples 1 to 4 and the lubricating oil compositions of Comparative Examples 1 ...

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Abstract

The invention provides a diesel engine lubricating oil composition and a preparation method thereof. The diesel engine lubricating oil composition of the present invention comprises antioxidant and antiwear agent, boronated succinimide ashless dispersant, calcium sulfonate detergent, sulfurized alkylphenate calcium detergent, naphthylamine type antioxidant, sulfur Substitute carbamate, dispersion type OCP viscosity index improver and lubricating oil base oil, the preparation method of described antioxidant and antiwear agent comprises: sulfuric acid and peroxide reaction, carry out saponification reaction with zinc-containing compound then, collect Oil phase products. The lubricating oil composition of the invention has excellent anti-oxidation and anti-wear properties, cleaning properties and dispersing properties, can meet the requirements of high-grade diesel engine lubricating oils, and prolong the service life of oil products.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a diesel engine lubricating oil composition. Background technique [0002] With the increasingly stringent environmental regulations, in order to reduce NO X , PM, CO and other harmful substances, diesel engines widely adopt measures such as delayed injection, raising the position of the upper piston ring, and setting up the EGR system. Among them, the EGR device can reduce the emission requirement of NOx by sending the cooled engine exhaust gas to the combustion chamber for secondary combustion. The increase of soot content will accelerate the viscosity growth of the oil, increase the wear and tear of the engine, and cause problems such as engine filter blockage. Therefore, there are higher requirements for the soot dispersing ability of diesel engine oil. [0003] Secondly, diesel engine oil is currently developing in the direction of SAPS (low sulfur, low phosphorus, low ash)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M137/06C10N40/25C10N30/06C10N30/04C10N30/10
CPCC10M137/06C10M169/04C10M2219/02C10M2219/062C10M2219/044C10M2223/042C10M2205/0206C10M2203/1025C10N2010/04C10N2030/06C10N2030/04C10N2030/10C10N2040/252
Inventor 张倩张辉钟锦声孙文斌武志强孙洪伟王立华张峰徐杰夏青虹
Owner CHINA PETROLEUM & CHEM CORP
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