The Motorcycle has many Series such as the G Series, F Series, R Series,K Series, S Series and the HP. BMW Motorrad has offered a light ABS tailored specifically to the needs of supersports bikes, providing a significant increase in active braking safety. The function ABS Pro represents a consistent refinement of the Race ABS in that it now enables ABS-supported braking when cornering. ABS Pro is offered as a retrofittable option which can be acquired through BMW Motorrad dealerships and is initially reserved exclusively for the top supersports model in the BMW Motorrad product range, the HP4.
The function was deliberately conceived for use on public roads, where unexpected dangers can always potentially lie in waiting. While the Race ABS in the HP4 already provides a very high degree of safety when braking in a straight line, ABS Pro now goes a step further to offer increased safety when braking on bends as well. Here, ABS Pro prevents the wheels from blocking even when the brakes are applied quickly; this reduces abrupt changes in steering force on shock-braking manoeuvres and stops the motorcycle from rearing up unintentionally.
Technically speaking, ABS Pro adapts ABS control to the motorcycle’s banking angle depending on the current situation on the road. In order to determine the bike’s banking angle, the system draws on the signals for roll rate, yaw rate and transverse acceleration as provided by the sensor cluster – which are already used for Dynamic Traction Control DTC and for the electronic suspension DDC Dynamic Damping Control.
As the banking angle increases, the brake pressure gradient is limited more and more at the start of the brake manoeuvre. This means that the pressure build-up is slower. In addition to this, pressure modulation within the ABS control range is more even. The benefits of ABS Pro to the rider are a sensitive response and a high level of brake and ride stability together with the best possible deceleration on bends.
Although ABS Pro provides valuable support and is an enormous safety bonus for the rider when braking on corners, it can in no way redefine physical limits. It is still possible to exceed these limits due to misjudgement or riding errors, which in extreme cases can result in a fall. When accelerating, the throttle valve no longer has to be closed for shifts, so propulsion power is virtually constant without torque interrupt.
When decelerating and shifting down (throttle valve closed), the engine speed is automatically adapted by means of double-declutching. Gears are engaged as usual by means of the gear pedal. Shift time is significantly reduced as compared to a gearshift using the clutch. However, the Shift Assistant Pro is not an automatic transmission, it simply provides gear shift support. When the Shift Assistant Pro is used for gear shifts, the cruise control is deactivated for safety reasons.