Great Wall hover - Page 12

Overview of the entire car-3
Stability:
Max. side rotary stable angle in no-load and static(°) ≥35
Operating stability(miniture0
Na
n
≥60 and N
Z
≥60
Smooth characteristic:
Weighted mean square value of acceleration
σ
w
(m/s
2
)
≤0.6883
Equivalent mean value L
eq
(dB)
≤116.5
Decreased comfortable limitation T
CD
(h)
≥1.2
Basic parameters of the complete vehicle of CC6460K and CC6460KY (continued)
Item CC6460K CC6460KY
Tightness:
Dust-proof tightness M(%) ≥95
Rain-proof tightness(miniature) ≥93
Noise:
Exterior noise of accelerating travel dB(A) ≤74
Interior noise of 50km/h constant speed travel dB(A) ≤79
Noise around ear of diver dB(A) ≤90
Emission:
Meet Europe II emission standard CO≤2.2g/km, (HC＋NOx)≤0.5 g/km
Low idle-speed emission of pollutant: (750±50)r/min CO≤0.1%, HC≤50ppm
High idle-speed emission of pollutant: (2000±50)r/min CO≤0.07%, HC≤50ppm