Thermal test solution for engine

Abstract

The invention discloses a thermal test solution for an engine, which consists of the following components in weight percent: 70-80 percent of ethylene glycol, 0.1-5.0 percent of aliphatic monocarbocylic, 1.0-5.0 percent of straight-chain aliphatic dicarboxylic acid, 0.1-1.0 percent of triazine skeleton tricarboxylic acid, 0.1-4.5 percent of aromatic acid, 0.1-1.0 percent of composite inhibitor, 0.1-0.5 percent of hydrolytic polymaleic anhydride, 0.2-4.0 percent of alkenyl amines, 0.2-2.0 percent of cyclohexylamine carbonate, 0.001-0.2 percent of antifoaming agent and the balance of deionized water. The invention can inhibit and prevent the corrosion during the thermal test process of the engine, has a unique gaseous phase corrosion inhibition technology, can be used for preventing the corrosion generated by potential corrosion which is formed by the contacting of the residual liquid and the air during the placing process after the thermal test of the engine, and has both a fully organic acid type engine coolant corrosion inhibition technology and a gaseous phase corrosion inhibition technology as well as good stability.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to an engine heat test fluid. Background technique [0002] Car engines need to go through a series of tests before leaving the factory, one of which is thermal testing. The heat test process is to run the engine online for a period of time to test whether the various indicators of the engine operation meet the design requirements. The engine uses a cooling system during the heat test, but most engine manufacturers currently use ordinary engine coolant during the heat test of the engine. [0003] Although the use of ordinary engine coolant during the heat test can also have a certain protective effect on various metals of the engine, but after the engine heat test is over, it is necessary to drain all the engine coolant in the cooling system, because it cannot be completely drained The coolant in the engine cooling system will create a high-humidity environment for the...

AI Technical Summary

Problems solved by technology

Imported products such as BASF’s P113 engine test protection fluid is a thermal engine test fluid with vapor phase corrosion inhibition capability. Although this product has a certain vapor phase antirust capability, it is severely corrosive to solder and is different from ordinary engine coolants. Poor compatibility, gel and precipitation appear after compatibility

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