Dario said:
I have a question that puzzles me for quite some time. We have 4 wheels on a car
that turns when you drive. Will it be possible that we can have alternators in
all the wheel shafts thus having 4 sources of chargers ?. Thus we can have a
self powering car with battery.!!!
Nope. The wheel mounted generators will produce a torque as they put out
electrical power that acts against the direction of wheel rotation. Just
like dragging your brakes. You now have to put more power into the
propulsion system to overcome this. Its not quite as bad as dragging
brakes, since part of the energy consumed will be returned to the
battery. But you only break even if the generators are perfect, i.e..
zero loss.
There is one application of this idea that I've seen. That is, the
construction of a hybrid car by adding a motor-generator electric drive
to the two wheels not driven by the internal combustion engine. This
system was probably somewhat less efficient than a hybrid with the
motor-generator coupled to the IC engine (as is done now), because the
'charging power' is coupled from one axle to the other through tire
rolling resistance. But it did allow the creation of a hybrid without
having to 'break into' the conventional drive train. And it created a
part time all-wheel drive system.
--
Paul Hovnanian mailto
[email protected]
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100 buckets of bits on the bus
100 buckets of bits
You take one down,
and short it to ground
FF buckets of bits on the bus