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English – 10
When the front-wheel brake is applied, the ABS func-
tion identifies the tendency of the front wheel to
block and stop turning. The ABS decreases the brak-
ing pressure and thereby stabilizes the eBike. The de-
tection is based either on wheel speed sensors on the
front and rear wheels, or on a wheel speed sensor on
the front wheel and an inertial sensor system in the
drive unit.
Once the eBike has been stabilized, precise increases
in braking pressure bring the front wheel back up to
the locking limit. This causes the lever to move a small
distance towards the handlebars with every braking
impulse. If the front wheel is tending to lock again, the
pressure is reduced as before. This process is re-
peated in order to keep the front wheel at the grip
limit at all times and therefore make optimum use of
the friction coefficient between the tires and the
ground.
A certain degree of pulsing or vibrating in the brake
lever is considered normal and can be expected dur-
ing operation of the ABS system.
The anti-lock braking system is fully assembled by the
manufacturer and must not be modified.
Warning: If you would like to attach other acces-
sories to the handlebars, bear in mind that the han-
dlebars must be able to turn freely at least 60° to ei-
ther side from the center position. Steering limiters
may need to be fitted.
0 275 U08 3AS | (07.03.2024)
How it works
The ABS function is ended when one of the following
happens:
– The hydraulic accumulator in the ABS control unit is
full.
– The eBike comes to a stop.
– The rider releases the brake.
Due to the way the system operates, the ABS can only
step in from a minimum speed of 3 mph.
In addition to the primary ABS function, a system has
been integrated that detects when the rear wheel lifts
off the ground during heavy braking. This means that,
within certain limits, forward pitchover can be coun-
teracted during very hard braking maneuvers.
For ABS Pro in the Race application, the system to
detect the rear wheel lifting off the ground is not avail-
able during heavy braking.
Instead, the rear wheel can be lifted off the ground for
various sporty cycling maneuvers, if required.
Assembly
Bosch eBike Systems
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