Gilles.Thesee(at)ac-greno
Guest
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 Posted: Mon Feb 27, 2006 7:56 am Post subject: Re : RE: 914 fuel pumps |
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----- Message d'origine -----
De: Jan de Jong <jan.de.jong(at)xs4all.nl>
Date: Lundi, Fvrier 27, 2006 3:54 pm
Objet: RE: 914 fuel pumps
| Quote: | If the pumps are more like voltage sources then a parallel setup
seems
best, if more like current sources then a series setup seems best.
So it
would depend on the pressure vs. flow characteristics of the pumps.
Hi Jan,
|
There must be some confusion, here. Obviously the pumps are not changing behavior following what representation you choose. Just think of batteries in parallel (same voltage) or in series (voltage adds, current is the same).
The Installation Manual diagram is right, except they forgot to (or choose not to) include check valves.
The other setup seems more like an after thought, and redundancy is not insured in all cases. Safety might be marginally less.
You can see a short discussion on the subject at
http://contrails.free.fr/engine_pierburg_en.php
FWIW,
Regards
Gilles Thesee
Grenoble, France
http://contrails.free.fr
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