Page 160 - TBIS_15194-2019_(EN)_3nd
P. 160





TBIS 15194:2019

76.26~78.75 77.5


78.76~81.25 80


81.26~83.75 82.5


83.76~86.25 85


86.26~88.75 87.5


88.76~91.25 90

91.26~93.75 92.5


93.76~96.25 95


96.26~98.75 97.5


98.76~101.25 100




b) After the equivalent inertia mass is set, please warm up the machine for 30
minutes.

c) The driving impedance which the dynamometer of the test machine applies to
the driving wheel of the electrically power assisted bicycle is calculated
according to the following equation.

2
F=R+0.027V +9.8Wsinθ
F: driving impedance (N)

V: speed (km/h)

W: standard value of equivalent inertia mass (kg)

Θ: angle of uphill road (°)

R: rolling impedance (N). When the wheel has yet to be installed on the roller of

the dynamometer of the test machine, the average rolling impedance is set as
2.6.

2
0.027: air impedance coefficient [N/ (km/h) ]
7.2 Driving motor: the external driving motor of the electrically power assisted
bicycle, which can control the revolution number, and can monitor the
revolution number and the output.


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