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Method for testing stability performance of engine coolant

A technology for engine coolant and stable performance, applied in the field of coolant, can solve the problems that affect the development, selection and certification process of silicate engine coolant, and cannot be used to evaluate stable performance, etc.

Pending Publication Date: 2022-01-28
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this stability test method cannot be used to evaluate the stability performance in actual use, which affects the development, selection and certification process of silicate engine coolant

Method used

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  • Method for testing stability performance of engine coolant
  • Method for testing stability performance of engine coolant
  • Method for testing stability performance of engine coolant

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0087] The following is an example according to the test method of the engine coolant stability performance of the present invention, it can be understood that the test method of the engine coolant stability performance of the present invention is not limited to the following examples.

[0088] Such as figure 1 As shown, the test device 10 used in the following embodiments includes a container 110, a rubber stopper 120, and a magnetic stirrer 130 with a heating function.

[0089] Further, the container 110 is a cylindrical glass test container. Wherein, rubber stopper 120 is provided with breathing hole 121 and temperature probe hole (figure not shown); The absorbent cotton is blocked; the magnetic stirring bar 132 is placed in the container 110.

Embodiment 1

[0091] Add silicate-type coolant A (300mL, freezing point -37°C) into a cylindrical glass container with an inner diameter of 90mm. Silicate-type coolant A contains silicate stabilizer M, and add potassium tetrafluoroaluminate 0.3g. Stir for 24 hours at 70°C±0.5°C with a stirring speed of 600r / min, observe the gel formation at the interface between the cylindrical glass container and the silicate-type coolant A liquid surface, as shown in figure 2 shown. From figure 2 It can be seen that there is an obvious gel at the junction between the cylindrical glass container and the liquid surface of the silicate type coolant A.

Embodiment 2

[0093] Basically the same as Example 1, the difference is that aluminum brazing flux potassium tetrafluoroaluminate is not added, specifically as follows:

[0094] Add silicate-type coolant A (300mL, freezing point -37°C) into a cylindrical glass container with an inner diameter of 90mm. Silicate-type coolant A contains silicate stabilizer M, and install the test device. Stir for 24 hours at 70°C±0.5°C with a stirring speed of 600r / min, observe the gel formation at the interface between the cylindrical glass container and the silicate-type coolant A liquid surface, as shown in image 3 shown. From image 3It can be seen that there is no obvious gel at the junction between the cylindrical glass container and the liquid level of the silicate cooling liquid A.

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Abstract

The invention relates to a method for testing the stability performance of an engine coolant, which comprises the following steps: mixing the coolant and an aluminum brazing flux in a container to obtain the gel generation condition of the wall surface of the container, wherein the coolant comprises a silicate stabilizer; and determining the stability of the coolant according to the gel generation condition. The dynamic working condition of actual use of the coolant is simulated, and the stability performance of the silicate stabilizer in the coolant is determined according to the gel generation condition, so that the stability performance of the coolant under the dynamic condition is determined, and a reference is provided for evaluating the stability performance of the coolant in actual use. The development, model selection and authentication processes of the silicate type engine coolant are facilitated; and the method for testing the stability of the coolant is simple to operate and short in test period.

Description

technical field [0001] The invention relates to the technical field of coolant, in particular to a method for testing the stability performance of engine coolant. Background technique [0002] With the development of the automobile industry, aluminum alloy materials are widely used as the material of the radiator of the cooling system of the automobile engine. [0003] The main function of coolant (also known as antifreeze, antifreeze, water tank treasure) is to protect the normal and good operation of the engine, circulate in the engine water tank, and play the role of antifreeze, antiboiling, antirust, anticorrosion and other effects. The coolant is divided into inorganic salt type and organic acid type, and the inorganic salt type is divided into phosphate type, amine type, and silicate type. Among them, silicate is a special corrosion inhibitor for aluminum, which has a protective effect on various metals in the cooling system, so silicate coolant has been widely used. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
CPCG01N25/00
Inventor 许扬李艳慧闫瑾汪玉瑄桃春生王清国王宏志
Owner FAW JIEFANG AUTOMOTIVE CO