Thermal test solution for engine

A heat test and engine technology, applied in the chemical industry, can solve problems such as poor engine coolant compatibility, solder corrosion, precipitation, etc., and achieve good overall synergy, corrosion prevention, and good corrosion inhibition effects

Active Publication Date: 2010-06-30
北京蓝星清洗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Thermal test solution for engine

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Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0036] Embodiments 1-8 Preparation of engine heat test fluid of the present invention.

[0037] Put ethylene glycol and deionized water into the reactor according to the ratio shown in Table 1, stir at room temperature for 10 minutes, and then add aliphatic monocarboxylic acid, straight-chain aliphatic dicarboxylic acid, triazine Skeleton tribasic carboxylic acid, aromatic acid, composite corrosion inhibitor, alkenyl amines are put into the reaction kettle, stirred at room temperature for 40 minutes, added hydrolyzed polymaleic anhydride, cyclohexylamine carbonate, defoamer, stirred until completely dissolved That's it.

[0038] Table 1 Components and proportions of engine hot test fluid

[0039] composition

[0040] composition

Embodiment 9

[0041] Embodiment 9 The engine heat test fluid of the present invention inhibits and protects performance tests on various metals

[0042] Glassware corrosion test and simulated use corrosion test are the test methods to evaluate the performance of automobile engine coolant to multi-metal corrosion inhibition. The test solution was tested, and the results are shown in Table 2

[0043] Table 2 Engine heat test fluid performance inspection result table of the present invention

[0044] serial number

[0045] From the data in Table 2, it can be seen that the engine heat test fluid of the present invention has excellent corrosion inhibition and protection properties for various metals such as solder, brass, red copper, carbon steel, cast iron, and cast aluminum.

Embodiment 10

[0046] Example 10 Comparative experiment on corrosion performance of engine heat test fluid of the present invention

[0047] The engine heat test liquid of the present invention prepared in embodiment 4 and the P113 engine test protection liquid of German BASF Company are compared with reference to the SH / T 0085 standard glassware corrosion test, and the corrosion contrast test results are shown in Table 3

[0048] Table 3 Corrosion performance comparison test results

[0049]

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): C09K5/20
Inventor 沈一飞白剑利王双田郭廷冰邱雪梅沈妮文措杰
Owner 北京蓝星清洗有限公司
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