GB/T 31027-2014Cleaner for automotive engine cooling system (English PDF)

1 Scope

This standard specifies the technical requirements for motor vehicle engine cooling system inside the cleaning agent, test methods, inspection rules and signs, packaging, transportation

Transport and storage requirements.

This standard applies to interior automotive engine cooling system cleaning products containing basic component of production and testing.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 4756 petroleum liquids hand sampling method

GB/T 9724 General rule for determination of pH chemical reagent

GB/T 11158 temperature test chambers

GB 12981 Motor Vehicle Brake Fluid

Cleaning agent Test method JB/T 4323.2 aqueous based

SH/T 0084 Test Methods for Cooling System Chemical Solutions on Organic Coatings on the car

SH0164 petroleum product packaging, storage and delivery acceptance rules

3 Technical requirements and test methods

Technical requirements and test methods for automotive engine cooling system of internal cleansing agent shown in Table 1.

Technical requirements and test methods for a vehicle engine cooling system cleaning agent inside the table project skills requirement

Liquid product of the solid product experiment method

Appearance homogenous liquid

Uniform, no hard lumps dissolve

After a homogeneous liquid

Visually

High and low temperature

Stability of a

High temperature stability (60 °C ± 2 °C, 6h)

Low temperature stability (-18 °C ± 2 °C, 1h)

Uniform, non-hierarchical, non-uniform precipitates, no hard lumps JB/T 4323.2 pH value b 7.5 ~ 11.5 GB/T 9724

Rinsing b (23 °C ± 2 °C) no visible detergent residue JB/T 4323.2

Impact on the automotive Organic Coatings b no effect on SH/T 0084

Cleaning efficiency b (100 °C ± 2 °C, 3min) /% >=90 Appendix Ac […]