MY20H06-2_1.0_26.08.2019
20
Overview
3.1.4
Electric drive system
The pedelec is driven by muscle power applied to
the chain drive. The force which is applied by
pedalling in the direction of travel drives the front
chain wheel. The chain transmits the force onto
the rear chain wheel and then onto the rear wheel.
Figure 14: Diagram of mechanical drive system
1
Direction of travel
2
Chain
3
Rear chain wheel
4
Front chain wheel
5
Pedal
The pedelec also has an integrated electric drive
system. The electric drive system is made up of
5 components:
Figure 15: Diagram of electric drive system
1
Control panel
2
Bottom-bracket gears
3
Drive unit
4
Rechargeable battery
5
A charger designed for the battery.
3.1.5
Drive unit
Figure 16: Drive unit
As soon as the required muscle power from the
rider pedalling passes a certain level, the motor is
activated gently and assists the pedalling motion
of the rider. The motor force is determined by the
set level of assistance. The system performance
is determined using the pedal assistance settings
on the control panel.
The pedelec does not have a separate emergency
stop or emergency shut-off button. The motor
switches off automatically as soon as the rider no
longer pedals, the temperature is outside the
permitted range, there is an overload or the shut-
off speed of 25 km/h has been reached.
When you step on the pedals again and the speed
drops below 25 km/h, the system starts again
A push assist system can be activated. The speed
depends on the selected gear. The rider slows the
pedelec down to their own pace by holding the
pedelec firmly while pushing.
5
2
4
1
1
2
3
4
1
2
