2.1 Vehicle Performance

　　According to Chinese standard GB / T 18385-2005 " electric vehicle performance test method ", GB / T 18386-2005 " electric vehicle energy consumption and driving range of test methods" , increasing vehicle performance electric city bus program to meet the following technical specifications :

　　Index Name Index test project

　　Dynamic acceleration time (s) 0-50Km / h ≤ 25

　　Top speed (km / h) 80

　　Max.gradeability 20%

　　Economy 40km / h ± 2:00 , power consumption Wh / km ≤ 1000

　　Driving range of a full charge driving range ≥ 300

　　Reliability MTBF mileage

　　Noise constant speed interior noise ≤ 80dB (A)

　　Speed ​​up outside noise ≤ 79dB (A)

　　2.2 vehicle parameters

　　Dimensions Length / mm 12000

　　Overall Width / mm 2545

　　Height / mm 3420

　　Approach angle , departure angle ( full load ) 6.5 º / 7.5 º

　　Wheelbase / mm 6300

　　Front / rear overhang / mm 2540/3160

　　Stepping height from ground level door / mm 360

　　Curb weight / kg ≤ 15500

　　The maximum number of 60 crew

　　Loaded with total mass / kg 19000

　　Front axle maximum load / kg 85000

　　Rear axle ratio 6.2

　　Tire 275/70R22.5

　　Rear axle maximum load / kg 12500

　　2.3 Environmental Requirements

　　Configure the vehicle power system must adapt to meet environmental requirements . Environmental requirements shown in the following table .

　　Item Parameters

　　Temperature / ℃ -10 ~ 42

　　Ambient air humidity / RH less than 95%

　　( Sea level ) altitude / m ≤ 100

　　Pavement road conditions dry, hard , smooth, clean and has good adhesion coefficient

　　City bus loop road conditions