Oxidization-resisting engine lubricating oil and preparation method thereof

Abstract

The invention discloses oxidization-resisting engine lubricating oil. The lubricating oil is prepared from the following components in parts by mass: 51 to 56 parts of base oil, 13 to 16 parts of polyethylene oxide, 5 to 7 parts of nano silicon dioxide, 5 to 9 parts of tricresyl phosphate, 3 to 5 parts of alkyl diphenylamine, 1 to 3 parts of lithium 12-hydroxystearate, 3 to 5 parts of a viscosity index improver OCP (Olefin Co-Polymer), 2 to 5 parts of polymethacrylate, 2 to 4 parts of dialkyl dithiophosphate, 2 to 5 parts of octylphenol, 4 to 7 parts of a sulfonate detergent, 2 to 6 parts of dibutyl phosphite, 1 to 3 parts of dimethyl silicone oil, 1 to 3 parts of polyisobutylene butane diacid pentaerythritol ester and 1 to 3 parts of an anti-foaming agent T901. The oxidization-resisting engine lubricating oil disclosed by the invention is high-performance engine lubricating oil which is designed by adopting a special researched new-technology formula aiming at characteristics that a high-load diesel engine is operated for a long period, a working condition is complicated, a heat load is heavy, diesel oil of different regions is frequently replaced and the like. The oxidization-resisting engine lubricating oil has transcendental high-temperature detergency and dispersion performance; piston ring sticking and cylinder sleeve polishing, caused by a fuel straight injection technology, are effectively prevented and an engine is cleaned greatly.

Description

Technical field [0001] The invention relates to a lubricating oil and its processing technology, in particular to an oxidation-resistant engine lubricating oil and a preparation method thereof, and belongs to the technical field of lubricating oil. Background technique [0002] When the engine is working, many transmission parts make high-speed relative motion under a small gap, such as the crankshaft main journal and main bearing, crank pin and connecting rod bearing, cam journal and cam bearing, piston, piston ring and cylinder wall, Each movement pair and transmission gear pair of the air distribution mechanism. Although the working surfaces of these parts have been finely machined, they are bumpy when zoomed in. If these surfaces are not lubricated, strong friction will occur between them. The dry friction between the metal surfaces not only increases the power consumption of the engine and accelerates the wear of the working surface of the parts, but also may burn the work...

AI Technical Summary

Problems solved by technology

However, the engine lubricating oil in the prior art still has a large friction coefficient, generally above 0.1, which only has the function of lubricating and reducing wear, and does not have the ability to automatically repair wear and tear. Therefore, after the engine has been running for a certain period of time, engine wear will still occur. Serious problem, engine maintenance cycle is short, maintenance cost is high, resulting in a lot of waste of resources, which has become a worldwide problem