Re: [now non-roc]Re: Radiator Fan Question

[drew <drew@dyermaker.cs.uoguelph.ca>]

Current EV technology is exploiting regenerative braking.  The drive
motors, when enagegd will generate electricity to charge the onboard
batteries as the vehicle is slowing down.  The increased load of the
motor-generators serves as a brake for the vehicle.  I believe that
Toyota's current hybrid uses this technology, and perhaps GM's next
generation EV as well?

I'm surprised that there would be any noticeable gain from a fan driven
gnerator.  Any power from the fan would come at the expensive of more
battery energy to the wheels to overcome the increased drag.  One of those
fundamental laws of physics teaches us something about this, I believe...
:)  I'm not sure I'd reccommend financing this guy's idea... :)

Drew

On Thu, 9 Mar 2000, Ewan Hopkins wrote:

> This reminds me of a news item I saw recently where a guy in Scotland has 
> supposedly developed a system for an electric car which is basically a fan 
> generator in the engine bay, hooked-up to the car's battery cells.  He 
> reckons that, above 30-40mph, the generator produces enough electricity to 
> usefully extend the range of the car. He's installed a prototype into a 
> Honda electric car and he's apparently trying to get together the funding to 
> exploit this idea commercially.
> 
> 
> Ewan Hopkins...
> 
> '85 Storm 2.0
> '86 GT 1.8
> 
> 
> >From: "Chris DeLong" <green536@hotmail.com>
> >To: tberk@mindspring.com, e@sbbs.se
> >CC: scirocco-l@scirocco.org
> >Subject: Re: Radiator Fan Question
> >Date: Wed, 08 Mar 2000 23:21:28 PST
> >
> >
> >>
> >>Here's the follow up question;
> >>
> >>At high speed does the fan's freewheeling actually create energy
> >>output back into the 12 volt system?
> >
> >Unfortunately it would only do this if you had the fan switch bypassed ;)
> >
> >>
> >
> >
> >Chris DeLong
> >ICQ#45030867
> >Seattle, WA USA
> >'80 16V Rag
> >'80 Rocco (new!)
> >'65 Bus (ugly, but good for campin' W/toaster oven)
> >'82 GLI (now with a happy shaved, solenoid operated trunk)
> >'80 'Vert
> >'61 17 Window
> >'78 Scirocco
> >
> >
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Drew MacPherson, Network Analyst, University of Guelph

drew@dyermaker.cs.uoguelph.ca           |  visit the Massey-Harris page:
http://dyermaker.cs.uoguelph.ca/~drew   |  http://m-h.cs.uoguelph.ca


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