Siemens has developed a new brake technology called the Electronic
Wedge Brake (EWB). Unlike conventional brakes, this is not hydraulic, but rather electronic, and works with a wedge, similar to those found on old horse-drawn carriages of the past.
Siemens claims that this EWB s more efficient, responds faster, requires far less energy, reduces a vehicle's weight and saves space.
The EWB relies on sophisticated sensor technology and electronics to prevent the brakes from locking and ensure highly efficient and controlled braking. The wedge uses a vehicle's kinetic energy, converting it into braking energy. By reinforcing itself this way, the EWB needs only one-tenth of the actuating energy required by today's hydraulic braking systems. Given this superior efficiency, the EWB will also be smaller, which will reduce the vehicle's weight. In addition, with the EWB there will be no need for brake lines, a servo-unit or a brake fluid reservoir. This will free up roughly 22 liters in the engine compartment, giving designers additional space to work with.
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