Non-aqueous coolant composition for engine

Abstract

The invention relates to a non-aqueous coolant composition for an engine, which comprises a propylene glycol basic solution and a composite corrosion inhibitor, the composite corrosion inhibitor comprises acylates of tripolycyanamide and poly fatty acid and water soluble salt, hydroxy aromatic acid and its water soluble salt, and also comprises other types of corrosion inhibitors, such as fatty acid and its water soluble salt, molybdate, silicate and a silicate stabilizer. The composition takes propylene glycol as the basic solution, the toxicity is low, the toxic and harmful addictives on human body and environment such as nitrite, nitrate, alcohol amine, phosphate and borate are not contained, the non-aqueous coolant composition is an environment-friendly product, the high temperature corrosion resistance performance is excellent, the low temperature cooling performance and high temperature boiling resistance performance are excellent, and the non-aqueous coolant composition is suitable for the engines with large power, heavy loading and high temperature working environment.

Description

technical field [0001] The invention relates to an engine coolant composition, in particular to an engine anhydrous coolant composition. Background technique [0002] Engine coolant has multiple functions such as cooling, anti-boiling, anti-corrosion, and anti-scaling, and is widely used as a coolant for engines such as automobiles, trains, airplanes, and ships. With the rapid development of the engine manufacturing industry, the engine is developing towards high power, heavy load, and high speed, but the volume is gradually reduced, and the operating temperature of the engine is continuously increasing. ℃ above, good corrosion inhibition, good heat transfer effect coolant. [0003] The most common coolant on the market is ethylene glycol-water coolant. The boiling point of this water-containing coolant is generally around 107°C, which cannot meet the performance requirements of modern high-power engines. At the same time, because of the presence of water, polyols are more...

AI Technical Summary

Problems solved by technology

The boiling point of this coolant is higher than 150°C, but the problem is that glycerol is more viscous than propylene glycol. Although a viscosity specific heat regulator is added, its starting and heat transfer effects are still affected.

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