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Old 03-28-2011, 10:10 PM   #37 (permalink)
dcb
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No, because you can add a "granny gear" to a regular transmission, with a lot greater transmission efficiency than driving a generator driving a motor. The inefficiency of such a setup will marginalize/negate your ability to downsize the engine.


The phrase "hybrid vehicle" is not that nebulous though.

"According to the U.S. Department of Energy, a hybrid vehicle is one that employs two separate power sources, typically a gasoline-powered engine and an electric motor, which is powered by rechargeable batteries. Hybrid vehicles also feature a regenerative braking system, which, when combined with the dual power sources, allows hybrid vehicles to maximize fuel efficiency while reducing the negative impact to the environment."

A motor without electricity is just an anchor. A motor supplied electricity from an engine and a generator is just a really just half of a horribly inefficient transmission. A motor with a regen controller and batteries and an engine to supply additional motive force (either supplementing rotational energy or electrons) is undisputably a hybrid vehicle.[/QUOTE]

Quote:
Originally Posted by IamIan View Post
Also ... diesel-electric trains even without traction batteries do regenerative braking ... they convert mechanical power into electrical power ...
It is referred to as "dynamic braking", it isn't actually storing any energy though, just heating resistors. It is a reasonable way to slow down an electric motor if you don't have batteries, but does not make it regen.
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