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Old 12-11-2009, 01:23 AM   #38 (permalink)
Nerys
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Join Date: May 2008
Location: Levittown PA
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Cherokee - '88 Jeep Cherokee
90 day: 19.44 mpg (US)

Ryo-Ohki - '94 Geo Metro Xfi
90 day: 50.15 mpg (US)

Vger 2 - '00 Plymouth Grand Voyager SE

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not physics just knowledge. as we know power plants end up having to put out "x" power whether its used or not hence why some localities make E cheaper at night to encourage people to run high drain things at night.

in your car though the alternator takes almost NO power when its "unused" (which is never but thats besides the point)

for an example of this next time you have your belt off give the alternator a "spin" note how easy it is to spin?

While running the minimum power is not the minimum the alt can put out but the minimum your car NEEDS to run which for many cars is actually quite a bit of power (shockingly large amount of power I am learning for some cars)

this creates a load. as you turn on more things you add more load.

its turning the alt belt 100% of the time but the "load" is not present 100% of the time at least not evenly.

Your car would not make it far without the alternator (there is not as much power in that battery as you think) and as a starter battery it gets really pissed off if you deplete more than a tiny amount of power from it before recharging it. IE big degradation in life span. IE they don't like it.

Even deep cycles are damaged if you consistantly take them below 80%

you need some good quality deep cycle cells then you can take them to 50% with a Decent lifespan.

How long does your battery last if you leave your head lights on? well those lights consume 7 amps. Your generator is already consuming more power than your headlights do at low beam. 8 amps is a lot of juice.

In theory YES if hydrogen was more efficient at combusting and it helped you combust gasoline better you COULD see gains running it off the car.

but ONLY if those gains are larger than all the losses in the long long chain of losses you create when you do this.

the newer your car the less likely it is too work since the newer cars really are pretty efficient at burning gasoline (relatively speaking)

either way the real answer is to put 2 or 3 good quality battery in the trunk (you need to figure out how much power you need between access to a charging jack) and power the hydrogen system off that. IF your going to see a real gain thats how your going to see it.
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