Engine coolant

Abstract

The invention provides an all-organic type engine coolant which comprises glycol, fat carboxylic acid, tricarboxylic acid, benzoic acid, tri (2-ethylhexoic acid) phosphonate, imidazoles compound, defoamer and deionized water. The engine coolant of the invention contains no inorganic salts, such as amines, borate, nitrate, nitrite, silicate, and the like, so the engine coolant is environment-friendly, can prevent all the contacted metal and nonmetal materials in the engine cooling system from being corroded, has an obvious engine coolant effect on various metals, particularly solves the problem that the cast aluminum using a traditional organic acid engine coolant becomes black generally, can be stabled in a relative low density and bigger PH value range, and has the advantages of long-time storage and use.

Description

technical field [0001] The invention relates to an engine coolant, which belongs to the technical field of chemical combination technical background [0002] The development of engine coolant is greatly affected by the composition and materials of automobile engines. With the rapid development of automobile engine technology, the requirements for engine coolant are becoming increasingly stringent, so the upgrading of engine coolant is also accelerating. The development trend of the automobile industry in recent years is that the power of the engine is increasing. In order to reduce the drag coefficient, the streamlined shape is generally adopted, so that the volume of the engine radiator becomes smaller and smaller, and the thermal load of the engine continues to increase. In order to reduce the weight of the car body and increase fuel economy, not only the engine cooling system uses a large amount of aluminum alloy, but also other parts of the engine are gradually aluminum ...

AI Technical Summary

Problems solved by technology

[0007] The present invention overcomes the above technical deficiencies of the existing all-organic acid engine coolant, solves the problems of cast aluminum blackening and cavitation corrosion, and provides an all-organic acid coolant that has a comprehensive protection effect on the multi-metal of the cooling system

The application of the phosphate ester proposed in the present invention, compared with the traditional organic acid type engine coolant, solves the problem of blackening of cast aluminum, and makes the engine coolant of the present invention protect the engine cooling system more comprehensively

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