Dismantle-free cleaning composition for automotive engine lubricating system sludge and preparation method and application thereof

Abstract

The invention belongs to the technical field of cleaning and discloses a dismantle-free cleaning composition for automotive engine lubricating system sludge and a preparation method and application thereof, wherein the dismantle-free cleaning composition comprises, by mass, 2-35% of 1-bromopropane, 2-35% of Mannich base, 2-35% of boronated polyisobutylene succinimide, 5-80% of neopentyl polyol ester, 0-0.2% of a metal corrosion inhibitor, and the balance of mineral base oil. The dismantle-free cleaning composition provided herein is effective in removing and dispersing carbon deposition and sludge in an engine lubricating system, has good antiwear and antifriction effects, and ensures that the parts of the engine lubricating system never wear.

Description

technical field [0001] The invention relates to the field of cleaning technology, in particular to an automobile engine lubricating system sludge-free cleaning composition, a preparation method and an application. Background technique [0002] During the operation of the engine, the lubricating oil is affected by the combustion temperature of the fuel and catalyzed by various media and metals, gradually deteriorates and ages, and produces sludge. They are produced in different parts of the engine, and gradually deposit on the oil passage and friction surface, resulting in poor lubrication. And wear accelerated, endangering the normal use of the engine at all times. The sludge in the lubrication system is composed of various substances such as colloid, asphaltenes, semi-oil coke, carbon greens and acids. The working temperature of the crankcase is relatively high, generally 65-85°C; many parts are lubricated by splashing. The splashed oil mist forms a large oxidation surfac...

AI Technical Summary

Problems solved by technology

However, both methods have disadvantages

As we all know, due to the lubricating oil outlet angle and the irregular structure of the oil pan, the waste lubricating oil cannot be discharged from the lubrication system; or the sludge is difficult to dissolve into the lubricating oil, and a large area adheres to the oil pan, crankshaft, connecting rod, etc. The surface layer of lubricating oil, no matter whether it flows out naturally by gravity or by vacuum adsorption, can't discharge the sludge cleanly

[0005] Another very serious situation is that by consulting the safety data sheets and testing of various products, we found that almost every product contains hydrocarbon solvents and glycol ethers that are difficult to volatilize. Although these solvents have a good cleaning effect on sludge Sex, but will remain in the crankcase, together with the waste lubricating oil to contaminate the newly added lubricating oil

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