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From: "Bruce Gray" <bruce.gray@snet.net>
To: <lancair.list@olsusa.com>
Subject: RE: LNC2 fuel injector info and survey
Date: Sat, 12 Jan 2002 16:37:02 -0500
Message-ID: <NFBBJJMCALOOBCMFOCHPOEGFCJAA.bruce.gray@snet.net>
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Reply-To: lancair.list@olsusa.com

          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
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>>
I to have thought of this and my thoughts are that this would give you a
single point of failure if it wasn't connected to the high deck pressure of
the turbo. Block the plenum and your riding a fast windmill.

Now if you want to plumb each side into a plenum box with multiple inlet
holes, it might work. But then again, you'd have uneven air distribution
within the box and from side to side.

If your plenum is in a high pressure area and for some reason it creates a
ram pressure effect, all your cylinders will go lean. Turbos solve this
problem by plumbing the fuel pump to the high deck pressure line to raise
the fuel pressure above that level, insuring the injectors receive the
correct amount of fuel.

Bruce
Glasair III


<snip>
5.  Do you think the use of injector shrouds connected to a common plenum
would help even out the combustion events in the normally aspirated engine
(turbo-charged engines use shrouded injectors plumbed to the deck pressure
plenum)?

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