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Fuel efficiency
Fuel efficiency

The cooling fan seen here is mounted on an engine and composes part of a broader setup from BAE Systems.

The setup removes electrical functions like fans and water pumps from direct reliance on the engine and powers them instead with energy created specifically for them through the device.

The result is an engine that's 10% more energy efficient.


Last updated August 17 2011: 5:47 PM ET
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