A kind of anti-rust long oil change period diesel engine oil and its preparation process

A technology of diesel engine oil and engine oil, which is applied in the petroleum industry, lubricating compositions, etc., can solve the problems of weak seawater corrosion resistance of rust inhibitors, and achieve excellent oxidation resistance, good oxidation resistance, and excellent rust resistance Effect

Active Publication Date: 2022-04-19
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually engine oil contains a small amount of rust inhibitors such as magnesium sulfonate and barium sulfonate. However, it is found in actual use that this type of rust inhibitor has weak seawater corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Anti-rust long-drain diesel engine oil, composed of the following components by weight percentage: 0.2% antirust agent, 14.5% engine oil compounding agent, 6.5% viscosity index improver, 0.2% pour point depressant, and the balance of Group II base oil.

Embodiment 2

[0028] Anti-rust long-drain diesel engine oil, composed of the following components by weight percentage: 0.25% anti-rust agent, 14.5% engine oil compounding agent, 6.5% viscosity index improver, 0.2% pour point depressant, and the balance of Group II base oil.

Embodiment 3

[0030] Anti-rust long-drain diesel engine oil, composed of the following components by weight percentage: 0.3% antirust agent, 14.5% engine oil compounding agent, 6.5% viscosity index improver, 0.2% pour point depressant, and the balance of Group II base oil.

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PUM

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Abstract

The invention discloses an antirust long oil change period diesel engine oil and a preparation process thereof. The diesel engine oil comprises the following components by weight: 0.2-0.4 parts of rust inhibitor, 10.0-15.0 parts of engine oil compounding agent, 5.0-8.0 parts of viscosity index improver, 0.1-0.4 parts of pour point depressant, base oil 75.0-85.0 parts, the rust inhibitor is a liquid imidazoline derivative. The antirust long oil change period diesel engine oil of the present invention meets API CK‑4 (15W‑40) specification requirements, and passes the special requirements of strict antirust test and long oil change period driving test test requirements. The antirust long oil change period diesel engine oil of the invention not only has good antirust performance, but also has the characteristic of long oil change period.

Description

technical field [0001] The invention relates to an engine oil for an internal combustion engine, in particular to an antirust long oil change period diesel engine oil and a preparation process thereof. Background technique [0002] In recent years, China's diesel engine manufacturing industry has developed rapidly, and more and more diesel engines are exported to Southeast Asia, Africa, South America and other regions and countries. Due to the low transportation costs, sea transportation has become the first choice for most companies. However, seawater is common in the engine. At the same time, fleet vehicles in many coastal areas frequently enter and leave the seaport, which increases the chance of contact with seawater, making the risk of some vehicle engines entering seawater. Moisture, especially seawater, is very serious to engine damage. With the increase of water in oil, the emulsification of oil will intensify, causing the corrosion of engine parts. Usually engine ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N30/12C10N40/25C10N30/10
CPCC10M169/04C10M2215/224C10M2207/144
Inventor 陈钊锋张杰李万英张可赵磊黄海鹏雷凌王向阳
Owner CHINA PETROLEUM & CHEM CORP
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