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Engine oil of long-service life diesel engine

A diesel engine and engine oil technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of poor oxidation resistance, poor temperature resistance, short oil change period, etc., and achieve the effect of low cost and long service life

Inactive Publication Date: 2010-10-06
LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low degree of refining of Group I base oils, the anti-oxidation performance is poor, and deposits such as carbon deposits are easily generated during use. In addition, the matching additives have poor temperature resistance and a short oil change period, which is difficult to meet modern Requirements for long-term use of high-temperature and high-speed engines

Method used

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  • Engine oil of long-service life diesel engine
  • Engine oil of long-service life diesel engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The weight percentage composition of additive is:

[0046] 3% of T161 high molecular weight polyisobutylene succinimide ashless dispersant, 3.5% of T106A high base number linear alkylbenzene synthetic calcium sulfonate, 2-3% of T115C high base number sulfurized calcium alkylphenate, 0.3 % of zinc di-n-octyl dithiophosphate, 0.2% of zinc dialkyldithiocarbamate, 0.1% of alkylamine dialkyl monothiophosphate, 0.1% of nanometer particles with a particle size of 15nm to 25nm Copper particles, 4.0% ethylene-propylene copolymer with a molecular weight of 60,000, 4.0% hydrogenated styrene diene copolymer with a molecular weight of 80,000, and 0.3% polyalphaolefin pour point depressant;

[0047] 83.5% base oil, the base oil is composed of 45% API Group III base oil and 55% polyalphaolefin synthetic oil.

Embodiment 2

[0049] The weight percentage composition of additive is:

[0050] 5% T161 high molecular weight polyisobutylene succinimide ashless dispersant, 5% T107 ultra-basic value synthetic magnesium sulfonate, 0.4% zinc di-n-octyl dithiophosphate, 0.2% dialkyl disulfide Zinc carbamate, 0.2% alkylated diphenylamine, 0.05% nano-copper particles with a particle size of 15nm to 25nm, 7.0% hydrogenated styrene diene copolymer with a molecular weight of 80,000, 0.5% polymethacrylic acid ester;

[0051] 81.65% base oil, the base oil is composed of 60% API III base oil and 40% polyalphaolefin synthetic oil.

Embodiment 3

[0053] The weight percentage composition of additive is:

[0054] 6% T161 high molecular weight polyisobutylene succinimide ashless dispersant, 4.5% T106D long-chain linear alkylbenzene high base number synthetic calcium sulfonate, 0.5% zinc dialkyldithiocarbamate, 0.15 % of secondary diarylamine, 0.15% of nano-copper particles with a particle size of 15nm to 25nm, 3.0% of ethylene-propylene copolymer with a molecular weight of 50,000, 4.0% of a hydrogenated styrene diene copolymer with a molecular weight of 60,000, 0.4% polyalphaolefin;

[0055] 81.3% base oil, the base oil is composed of 65% API III base oil and 35% polyalphaolefin synthetic oil.

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Abstract

The invention provides engine oil of a long-service life diesel engine, which comprises basic oil and additives, wherein the additives comprise the following ingredients in percentage by weight: 4.0 percent to 6.5 percent of detergent additives, 3.0 percent to 5.5 percent of dispersing agents, 0.2 percent to 0.8 percent of corrosion inhibitors, 0.1 percent to 0.2 percent of antioxidizers, 0.01 percent to 0.15 percent of nanometer wear resistance agents, 5.0 percent to 9.0 percent of viscosity index improving agents, 0.3 percent to 0.5 percent of pour point reducers and the balance of basic oil, wherein the basic oil is semisynthesis composite basic oil consisting of API type III basic oil accounting for 45 percent to 65 percent of the mass percentage of the basic oil and 35 percent to 55 percent of poly-alpha olefin synthesis oil. The engine oil of the diesel engine provided by the invention can adapt to the requirements of various diesel engines, the performance meets the quality requirements of the engine oil of the diesel engine API CH-4, the engine can be ensured to be always in a good lubricating state, the service life of the engine oil is long, the environment pollution is little, and in addition, the cost is low.

Description

technical field [0001] The invention relates to the field of engine lubricating oil, in particular to diesel engine oil with a long oil change period. Background technique [0002] The main function of lubricating oil in machinery is to reduce friction and slow down wear, so as to ensure the effective and long-term operation of the machinery. The second is cooling. Work within a certain temperature range to prevent damage to parts due to rising temperature; in addition, it has protective, sealing and cleaning functions. The protective effect is to prevent the metal from being corroded by air and other chemical gases. The sealing effect refers to the lubricating oil used in the internal combustion engine, which can prevent the gas in the combustion chamber from entering the crankcase through the gap between the cylinder wall and the piston. The cleaning effect is that in the circulating lubrication system, the lubricating oil can wash away some wear debris and other polluta...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/10C10N30/06C10N40/25
Inventor 陈立功
Owner LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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