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why does no one do this? | 22 comments (22 topical, editorial)

Re: why does no one do this? (3.00 / 0) (#5)
by Jon Miller (Fieldlines 'at' otherpower 'dot' co 'dot' uk) on Thu Apr 24th, 2008 at 12:52:13 PM MST
(User Info) http://www.otherpower.co.uk

donald77777,

do you mean along the lines of regenerative brakes that use generators as brakes?

Jon M

www.otherpower.co.uk "I am certainly not a perfectionist, the thing is to know where you can take short c

Re: why does no one do this? (3.00 / 0) (#11)
by donald77777 (donald7_44@hotmail.com) on Thu Apr 24th, 2008 at 09:03:06 PM MST
(User Info)

Yes, this was mostly what I was thinking. Eg. For instance, let us take a pickup truck, big lots of unused space in the back. You would use regenerative breaking when stopping to recharge the battery. in the back of the truck you could remove the part of the liner and run lets say belts from your wheels to power a generator ( not very tough gears, would kill your gas mileage)gears that are kind of low do not interfere. In addition, a row of batteries that would be being charged from driving and braking that could be used to help offset the gas usage.
I might just be needing to be whacked by a clue hammer (wink) but I have had this in my mind for at least 10 years, and just was thinking it could work.

[ Parent ]

Re: why does no one do this? (3.00 / 0) (#16)
by wooferhound (tim((NoSpamAt))wooferhound.com) on Thu Apr 24th, 2008 at 11:29:33 PM MST
(User Info) http://wooferhound.com

It would be much simpler to just charge the second battery from the alternator. It is designed to do exactly what you are talking about. It wold present a larger load to the engine and use more gas. All of your ideas here will use more gas. Using gas to charge batteries is really expensive. It would be way cheaper to charge the batteries with a battery charger plugged into the wall outlet.

W o o f -={(

[ Parent ]

Re: why does no one do this? (3.00 / 0) (#19)
by richhagen (richhagen (a t) Juno.com) on Fri Apr 25th, 2008 at 02:25:22 AM MST
(User Info)

For braking, not a problem, my hybrid does this now to some extent. If you are going to induce drag on the wheels spinning a belt and turning an alternator while driving down the highway, and then use some of that energy captured to spin a motor to help propel you down the road, you will find that in every conceivable scenario at a steady speed you will be using more additional gas to keep spinning the alternator because of the added drag than you will save by using the energy captured in a motor to help propel you. It is basically only worthwhile if you want to take the kinetic energy of the vehicles motion and turn some of it into electrical energy rather than the thermal energy of normal breaking, or if you are going to use a smaller gasoline engine in general and supplement the peak acceleration with an electric motor, which is what hybrid cars do now. Now if you were going to charge the batteries from another power source, kind of like a plug in hybrid, that would be a different analysis. Rich
'A Joule saved is a Joule made'
[ Parent ]

Re: why does no one do this? (3.00 / 0) (#21)
by electrak on Fri Apr 25th, 2008 at 10:55:33 AM MST
(User Info)

Donald
look up transwarp motor ( not from trek ) it's a dc motor with drive shift flanges on it to do where ( no man has gone before ) part of the drive shaft goes, then you use electric power to help get you going, and idealy help you stop and recharge, NetGain is the company that makes them but the do not offer a controller that does regen, yet

[ Parent ]

why does no one do this? | 22 comments (22 topical, 0 editorial)

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