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Re: Electric Tractors....Battery Cars


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Posted by John T on March 21, 2009 at 08:27:57 from (71.52.194.12):

In Reply to: Electric Tractors....Battery Cars posted by Wild Bill Caldwell on March 21, 2009 at 07:53:48:

Yes, a working alternator produces energy if its being made to turn. Far as I know some of the Hybrids ALREADY use the turning wheels (effectively) when coasting and/or braking to produce energy as they effectively turn an alternator or equivalent type of device. Similar, braking can take place by putting a load on the rotating wheels but instead of it all being wasted as heat energy in friction brakes, its converted into electrical energy (sort of like the wheels run an alternator in laymans terms) to replenish the batteries.

Of course, theres no free lunch and energy isnt created or destroyed, simply changed in form. The kinetic energy (1/2 MV squared) an auto has when say coasting can be converted into electrical energy via an alternator to charge a battery but remember that creates a load on the wheels turning which can be used as brakes. Similar it takes energy to get a car upon top a hill but then it has potential energy which can be recovered as the car coats abck down the hill and the wheels turn an alternator

Yep, you can hang a fifth wheel outside a car n let it run an alternator but dont forget it takes additional HP to overcome the extra load to tuen that extra fifth wheel. Same way it takes engine HP to run that belt driven alternator remember and it takes energy regardless if using a fifth wheel or a belt off the engine.

The hybrids do it in a simpler more efficient way,,,,,a dc motor/generator can turn the wheels if youre putting battery energy INTO IT buttttttttt if youre coasting then the cars momentum is turning the DC motor/generator so it puts energy BACK INTO THE BATTERY Plussssssssss it can act as a brake versus wasitng the energy as heat in friction braking.....

Got it???????? Good question

John T


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