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Hybrids
Hybrid vehicles are purely dependent on an internal
combustion for power but use electrical systems to
improve fuel efficiency. The five key features are the
use of electric motor to assist in propelling the
vehicle, the ability to charge a battery to provide
power for the electric motor, the use of regenerative
braking (braking recharges the battery), automatic
engine start and stop and a transmission system that
optimises engine efficiency and car performance.
Per mile
driven, hybrids generate significantly lower emissions
than conventional vehicles, approximately halving fuel
consumption. They can also deliver better driving
performance using the electric motor to give good
acceleration from a standing start and to assist the
engine at high speeds. Hybrid cars have the power
to make much greater use of the latest electrical
systems, which give improved safety and comfort levels.
There are
a number of hybrid variations, different configurations
determine efficiency, performance and cost. There are
full, mild and weak hybrids; series, parallel and
combination drive trains and different fuel options.
Hybrid technology is applicable not only to cars but
buses and trucks.
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