Super-long life engine oil and preparation method thereof

Abstract

The invention relates to super-long life engine oil, and belongs to the technical field of engine oil. The engine oil comprises base oil and an additive. The base oil comprises following components inparts by weight: 45-55 parts of GTL base oil, 3-10 parts of alkyl naphthalene AN30, 5-10 parts of PAO base oil, 3-8 parts of polyester, and 5-10 parts of diester; and the additive comprises followingcomponents in parts by weight: 2-6 parts of a viscosity index improver; 0.1 to 0.5 part of a pour point depressant; 15 to 20 parts of a multifunctional additive; and 1 to 5 parts of an anti-wear agent. The preparation method comprises the following steps: uniformly mixing the base oil, heating to a temperature of 60-70 DEG C under stirring; adding a viscosity index improver and a pour point depressant, uniformly stirring, finally adding a multifunctional additive and an anti-wear agent, uniformly stirring, and standing for 7-9 hours to obtain a finished product. The engine oil has the advantages of long service life and reduction of oil change frequency.

Description

technical field [0001] The invention relates to the technical field of engine oil, in particular to an ultra-long-life engine oil and a preparation method thereof. Background technique [0002] At present, engine lubricating oil, also known as internal combustion engine lubricating oil, or engine oil for short, is the lubricating medium for each moving part in the engine system, and has the functions of lubricating, cooling, cleaning and sealing. [0003] The oil change interval of the existing lubricating oil is usually: 5,000 kilometers for cars and 10,000 kilometers for diesel vehicles. When the oil change interval is approaching, the engine oil will gradually show the following phenomena: 1. After the oil is oxidized at high temperature, three types of harmful substances (carbon deposits, paint film and sludge) will be generated, and the viscosity will increase and the lubricating effect will decrease; 2. All lubricating oils Without exception, all of them contain "visc...

AI Technical Summary

Problems solved by technology

When the oil change interval is approaching, the engine oil will gradually show the following phenomena: 1. After the oil is oxidized at high temperature, three types of harmful substances (carbon deposits, paint film and sludge) will be generated, and the viscosity will increase and the lubricating effect will decrease; 2. All lubricating oils Without exception, all of them contain "viscosity index agent (viscosity index improver)" to obtain multi-grade engine oil with good low-temperature starting performance and maintaining proper viscosity at high temperature, but due to the shearing of friction pairs (gears, bearings, etc.) The viscosity index agent has a service life, that is to say: the viscosity of the lubricating oil gradually decreases with the increase of the number of shears until it is permanently lost.

In the end, the viscosity of lubricating oil becomes thinner, and the noise of the engine becomes louder; 3. Due to the increase of acidic substances produced during the use of the oil, it corrodes the metal parts of the engine; 4. The defects of the base oil used in ordinary lubricating oil: such as natural The cleaning ability and anti-oxidation ability are relatively weak, and a large amount of sludge is produced

[0004] Therefore, there are following defects in the above-mentioned prior art scheme: it is relatively loaded down with trivial details to change engine oil, and the cost of changing engine oil is increased, and the process of relatively frequent engine oil replacement may also delay normal work

Images