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Recuperation
When a vehicle brakes, the discs convert
the kinetic energy into thermal energy,
which is wasted as it cannot be used. With a
recuperation system, like the one in the Audi
A5 Cabriolet, the kinetic energy is converted
into useful electrical energy. The way it works
is simple. While the car is coasting or braking,
the alternator voltage is raised above the
level of the basic electrical system, which
enables the alternator to generate electrical
energy and store it temporarily in the battery.
When the vehicle accelerates, this energy is
used to relieve the load on the alternator,
resulting in a fuel saving of up to 3%.
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