Mailing List flyrotary@lancaironline.net Message #8098
From: William <wschertz@ispwest.com>
Subject: Re: [FlyRotary] Re: Runner Length Was Ref: injector relocation
Date: Thu, 13 May 2004 07:03:08 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
In talking with Francois from Mistral engines at Oshkosh, his contention on injector placement was that due to pressure swings in the intake manifold, they felt that they were getting condensation of fuel on the runners when the injectors were far from the port, with subsequent fractionation of the fuel into a lighter component, and a heavier component. The heavier component then was eventually pulled into the engine, did not burn completly, and finished burning in the exhaust, raising their EGT's.
 
FWIW
Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
Sent: Wednesday, May 12, 2004 11:31 AM
Subject: [FlyRotary] Re: Runner Length Was Ref: injector relocation



   Ed Anderson <eanderson@carolina.rr.com> wrote:

>   Rusty, I don't think anyone can answer that question - depends on too many variables.  You would think that even if the fuel coated your long runners that eventually it ends up in the combustion chamber. 

   Yes, but fuel that condenses on the sides of the runners
finds its way into the combustion chamber as relatively
large, unburnable, droplets.

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