Flywheels: Alternatives to Hybrid Car Batteries?
Consider the hybrid car. Halfway between the traditional motor and the fully electric Nissan Leaf or the Volkswagen e-Up!, they're a nod to green motoring. While retaining a conventional diesel engine, they can harvest kinetic energy from the car's braking motion and use that to power an additional electric motor.
But batteries are energy-intensive to manufacture, and the weight of a battery pack can add more than 50kg to a vehicle's mass, which means increased fuel usage – though hybrids are still get more miles per gallon than the conventional versions of the same models.
|<< PREVIOUS||NEXT >>|
blog comments powered by Disqus