New Brake Function by Continental Provides Motorcycles with More Stability

International automotive supplier Continental has been developing and manufacturing Anti-lock Brake Systems (ABS) for motorcycles for more than 10 years. Continental has now enhanced its Motorcycle Integral Brake (MIB) system by adding a new function: optimized curve braking – for safer braking in curves.
“Thanks to optimized curve braking, braking in curves is more stable and therefore more predictable,” said Ronan Le Roy, head of the motorcycle business in the Vehicle Dynamics Business Unit of Continental’s Chassis & Safety Division. “The danger of having an accident in a curve is reduced and safety is increased.”
The function will go into series production in the new BMW S 1000 XR motorcycle in early summer of 2015.
Until now, Anti-lock Brake Systems for motorcycles have been designed to maintain stability during straight-line braking. Brakes must be applied carefully in curves in order to avoid an abrupt fall.
“The system takes account of the fact that a motorcycle banks in curves. The ABS kicks in more gradually, modulating braking pressure smoothly to improve handling in curves,” said Lothar Kienle, head of Development Motorcycle in the Vehicle Dynamics Business Unit.
The MIB system makes sure that brake pressure is applied to both the front and rear wheel in ideal proportion. The result is greater overall stability. This enables the motorcycle to translate a rider’s braking intention without a radical shift in weight – a prerequisite for dynamic handling and enjoyment coupled with a reassuring sense of safety.
The interaction between the numerous sensorics and high-performance algorithms in a sensor box is critical for optimized curve braking. The ABS adapts as a function of how much a rider leans into a curve, depending on the situation. The sensor cluster provides signals on roll and pitch rates, plus lateral acceleration to help determine the angle at which a rider is leaning and checks the data approximately 100 times per second. As the rider leans further into a curve, the system increasingly limits the brake-pressure gradient. The resultant braking pressure accumulates in a more gradual fashion. In addition, the ABS applies modulation more gently. Advantages of the optimized curve braking include a more sensitive response, greater stability, and optimum braking, even in curves for the driver.
The system permits a series of other safety functions that benefit both manufacturers and riders:
• Particularly sensitive lift-off detection of the rear wheel for optimum deceleration and stability (Rear Wheel Lift-off Protection, RLP).
• Electronic traction control (Traction Control System, TCS) steps in whenever a motorcycle threatens to get out of control due to excess speed, extreme banking or too much slip. Motor management and/or braking reins in power so that a motorcycle can regain stability.
• Wheelie control regulates engine torque to prevent the front wheel from lifting off during acceleration.
Anti-lock Brake Systems ensure that the motorcycle remains stable under emergency braking, the front wheel continues to turn, and that the vehicle does not come to an abrupt fall.
“Studies have shown that equipping motorcycles with ABS could reduce accidents by 20 to 30 percent,” said Le Roy. “Universal use of ABS in motorcycles and scooters could greatly reduce the number of serious injuries and accidental deaths.”
The European Union (EU) has recently announced that ABS will become mandatory for motorcycles with more than 125 cc displacement starting January 1, 2016 for newly developed models, and January 1, 2017 for any new motorcycle sold in the EU. Continental is supporting manufacturers and riders with a variety of solutions for every class of vehicle. The lineup extends from simple one-channel ABS for scooters and light motorcycles to the MIB system that also offers enhanced features like sport and off-road ABS, optimized curve braking, and Motorcycle Hold & Go.

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