GTRQRTV06 08 8 th GRB ASEP IWG Baltimore

GTRQRTV-06 -08 8 th GRB ASEP IWG, Baltimore, 30 -31 May 2018. Introduction of China AVAS requirements and test methods of electric vehicles running at low speed China Automotive Technology and Research Center Co. , Ltd 1

Contents l A summary of AVAS and related standards in China l Scope (vehicle categories and technical categories) l GB/T XXXXX-20 xx <Acoustic vehicle alerting system of electric vehicles running at low speed> l Key points and problems l Items for future 2

A summary of AVAS and related standards in China Standards No. Requirements GB 7258 -2017 <Technical specifications for safety of power-driven vehicles operating on roads> √ GB/T 28382 -2012 <Battery electric passenger cars Specifications> √ GB/T 34585 -2017 <Battery electric goods vehicles Specifications> √ GB/T 32694 -2016 <Plug-in hybrid passenger cars Specifications> √ GB/T XXXXX-20 xx <Acoustic vehicle alerting system of electric vehicles running at low speed> √ Test methods √ *The necessity of AVAS standard was firstly realized in M 1 category battery electric vehicles in year 2012. 3

Scope of AVAS and related standards in China Technical M 1 M 2 M 3 N 1 N 2 N 3 √ √ √ √ √ Plug-in √ √ √ √ √ Others √ √ Battery EV Hybrid Fuel cell GB 7258=√, GB/T 28382= √, GB/T 34585=√, GB/T 32694 = √, GB/T XXXXX= √ 4

GB/T XXXXX-20 xx u Timetable of GB/T XXXXX-20 xx Ø Working group established, 2014. 3; Ø Waiting for approval, 2017. 8. u Consideration Ø China background noise. Ø Other GB or GB/T standards. Ø UN R 138 Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility (QRTV). 5

GB/T XXXXX-20 xx u Technical parameters Ø Scope: M 1 and N 1 categories pure electric vehicles, hybrid vehicles with pure electric driving mode, and fuel cell electric vehicles. Ø Speed Range: 0 < V ≤ 20 km/h, optional at 0 km/h speed; Ø Sound level: 10 km/h - 52 d. B(A), 20 km/h - 58 d. B(A); max - 75 d. B(A); 2 d. B(A) higher than UN R 138; Ø Freq. Shift: when the speed is in the range of 5 -20 km/h, at least one 1/3 octave frequency will increase with the speed of the car. The minimum average frequency shift rate of this frequency should satisfy ≥ 0. 8% (km/h). Ø Pause function: optional. 6

Key points and problems u Sound @ 0 km/h Ø GB 7258 -2017 <Technical specifications for safety of power-driven vehicles operating on roads> Ø GB/T 28382 -2012 <Battery electric passenger cars - Specifications> Ø GB/T 34585 -2017 <Battery electric goods vehicles - Specifications> *When vehicles are starting, and the speed is lower than 20 km/h, AVAS should work. Ø GB/T 32694 -2016 <Plug-in hybrid passenger cars - Specifications> *When vehicles are running at E-mode, and the speed is lower than 20 km/h, AVAS should work. Ø GB/T 12535 Motor vehicle—Starting performance—Test method *Starting performance = ready + go u Conclusion: Sound@0 km/h should be make certain. 7

Key points and problems u Limit value Ø The sound level and frequency parameters clear enough for alerting? *The sound should be easily be recognized by ----Car and transport management authorities ----Blind people ----Aged people and children ----Absent-minded people (smart phone users) u Pause function Ø Reduce the noise pollution on specific situations such as: residential area during middle night; *Depends on sound level and frequency parameters. Ø Possibility of more accidents caused by pause function. *When vehicles are starting, and the speed is lower than 20 km/h, AVAS should work. 8

u Scope Items for future Ø Harmonize different GB and GB/T standards scopes (vehicles and technical categories u Pause function、Sound @ 0 km/h Ø Uniform requirements on pause function、sound @ 0 km/h *Based on safety, *Sound quality. u Limit value Ø Feedback of the limit value now ----Car and transport authorities ----Blind people ----Aged people and children ----Absent-minded people (smart phone users) Ø How to decide if the AVAS is working, paused or failure? 9

National Automotive Standardization Technical Committee Thanks for your attention Web site：www. catarc. org. cn 10