| Re: [GMCnet] 455 Serpentine belt system [message #78333 is a reply to message #78305] |
Sun, 28 March 2010 18:37   |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma:
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Senior Member |
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It would be nice to run the fan and pump on shut-down to cool it off.
Like hitching a horse to a walker.
Ljdavick at comcast.net
On Mar 28, 2010, at 1:24 PM, jack spenser <jspenser@gmail.com> wrote:
> doesnt sap power from the engine,
>
> Turns out all the energy comes from the engine, so it is ok to say you
> want to drive these from electric power, but is not more efficient and
> does sap energy from the engine.
>
> engine supply's rotational energy through a belt, to the alternator
> (loss)
> alternator converts rotational energy to electrical (loss)
> alternator charges the battery (loss - to heat)
> electrical drives a motor (loss)
> which drives a pump (loss)
>
> so driving electrical pumps and fans might be more fun, or more
> convenient, but it is not more economical, or less load on the engine
> .
>
>
>
>
> and the upgraded alt allowed by a serpentine system would be more
> then enough to power an electric fan and water pump...
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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