1. Vehicle Noise Standards System of China1 1

2. The noise standards system plan of China
5. Wind noise (exterior and interior)
3. Pass by noise 50km/h
4. Cruise and coast down noise 80
Speed, km/h
6. Cruise noise 50km/h 60
8. Brake squeal 40
7. Compressed air noise (service brake)
2. ASEP 20
9. QRTV
1. Stationary noise
10. Compressed air noise (parking brake)
11. Compressed air noise (pressure regulator)
The compressed air noise is emergently needed and ASEP should be put into research. 2

3. Special condition of ASEP
City express 80
Speed, km/h 60 40
ECE ASEP
China ASEP 20
80km/h cruise noise is also very important for China. 3

4. Stationary noise
The stationary noise standard with a requirement for in use vehicles will make sense for forbidding the change of exhaust system and control the in use vehicles well. 4

5. Compressed air noise Speed, km/h80
Speed, km/h 60
Braking air noise 40 20
Parking air noise
Regulator sound
＊With the compressed air noise, China noise standards will be better harmonized with ECE R51. 5

6. Interior noise
China has now more than drivers in year 2016 and the acoustic environment inside the vehicle is also very important for such huge numbers of drivers.
For the reason of this, in the future we should pay more attention to interior noise especially for heavy commercial vehicle drivers who drive the vehicle several hours a day. 6

7. New technology(electric vehicles)
Rated power
124
(Motor)
110
Peak power
220
Torque
3000 N.m S
1250rpm
This bus belongs to the sub-category with Pn no more than 150kW, so:
76dB(A) from 2016;
74 dB(A) from 2020;
73 dB(A) from 2020.
We should plan and draft new noise standards for electric vehicles. 7

8. Thanks for your attention
National Automotive Standardization Technical Committee
Thanks for your attention
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