Engine oil of long-service life gasoline engine

Abstract

The invention provides engine oil of a long-service life gasoline engine, which comprises basic oil and additives, wherein the additives comprise the following ingredients in percentage by weight: 4.0 percent to 6.0 percent of dispersing agents, 2.5 percent to 4.5 percent of detergent additives, 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 copper 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 ofbasic oil, wherein the basic oil is semisynthesis composite basic oil consisting of API type III basic oil accounting for 40 percent to 65 percent of the mass percentage of the basic oil and 35 percent to 60 percent of poly-alpha olefin synthesis oil. The engine oil can meet the requirements of high-temperature high-speed automobile and motorcycle engines, and can ensure that the engines are always in a good lubricating state, in addition, the service life is long, and the cost is low.

Description

technical field [0001] The invention relates to the field of engine lubricating oil, in particular to a gasoline engine oil. 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 pollutants between the friction s...

AI Technical Summary

Problems solved by technology

Due to the low degree of refining of Group I base oils, the oxidation resistance is poor, and deposits such as carbon deposits are easily generated during use, and the matching additives have poor temperature resistance, which is difficult to meet the long-term use of modern high-temperature and high-speed engines. Therefore, the oil change period of gasoline engine oil in my country is usually only 5000-8000 kilometers

Developed countries in Europe and the United States use synthetic ester and poly-α-olefin synthetic oil as base oil, and then add a variety of high-performance additives. The service life of the engine oil can reach 30,000-40,000 kilometers, which greatly reduces the consumption and waste of engine oil. Motor oil pollutes the environment, but the cost of fully synthetic motor oil is 3 to 5 times higher than that of mineral oil, which greatly limits its popularization and application

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