China: New GB standards for Electronic stability control system (ESC).

 

China has published two updated standards for Electronic stability control system (ESC).

These are:

• National Standard of the P.R.C., Performance requirements and testing methods for electronic stability control system(ESC) for light-duty vehicles
• National Standard of the P.R.C., Performance requirements and testing methods for electronic stability control system(ESC) for heavy-duty vehicles

The first one supersedes GB/T 30677—2014, Performance Requirements and Test Methods for Electronic Stability Control Systems of Light-Duty Vehicles. Compared with the 2014 edition, and aside from editorial revisions, the principal technical changes are as follows:

a) The scope of the standard has been revised (see Chapter 1; Chapter 1 of the 2014 edition);

b) The edition and clause numbering of GB 21670 referenced in the method for determining the adhesion coefficient utilisation rate have been updated (see 6.2.2; 6.2.2 of the 2014 edition);

c) The reference to GB 21670 for brake break-in has been revised to the current version of GB 21670 (see 6.3.6; 6.3.6 of the 2014 edition);

d) The requirements relating to steering wheel angle in the sinusoidal stop test have been modified (see 7.7.6; 7.7.6 of the 2014 edition);

e) The requirements for testing on ice- and snow-covered roads have been removed (see 7.8 of the 2014 edition);

f) New requirements addressing changes to and extensions of vehicle types have been introduced (see Chapter 9);

g) Provisions on the implementation of the standard have been added (see Chapter 10);

h) The informative appendix on ice and snow road testing requirements has been deleted (see Appendix A of the 2014 edition);

i) A new normative appendix setting out functional safety requirements has been added (see Appendix A).

The second one supersedes GB/T 38185—2019, Performance Requirements and Test Methods for Electronic Stability Control Systems of Commercial Vehicles. Compared with the 2019 edition, and aside from editorial revisions, the principal technical changes are as follows:

a) The scope of the standard has been revised (see Chapter 1; Chapter 1 of the 2019 edition);

b) The performance requirements for rollover stability control in the J-turn test have been modified (see 5.1.2; 5.1.2 of the 2019 edition);

c) Functional safety requirements for electronic stability control systems of heavy-duty vehicles have been introduced (see 5.5);

d) Additional test requirements have been removed (see 7.10 of the 2019 edition);

e) New requirements addressing changes to and extensions of vehicle types have been added (see Chapter 8);

f) Provisions concerning implementation of the standard have been added (see Chapter 9);

g) Additional test requirements previously set out in the informative appendix have been deleted (see Appendix A of the 2019 edition);

h) A new normative appendix specifying functional safety requirements has been added (see Appendix A).

To stay up to date with Chinese GB standards for vehicles, please do not hesitate to contact the Institute for Global Automotive Regulatory Research.