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I run just a little over 50psi, which is the most my regulator will allow. The higher pressure will increase atomization. It will increase fuel flow a bit, but that is easily handled with a bit of tuning, unless you've sized your injectors to large. I have my MegaSquirt configured for staged injection, so that at low MP and RPM only one set is used. That has been effective in delivering a smoother idle.
On Jan 19, 2013, at 10:57 AM, Bill Bradburry wrote:
All of the fuel injector capacity figures that I have seen are at a pressure
of 43.5 psi. That is the pressure I use for my Renesis.
There is a calculator on the lower part of this page that will tell you what
injector flow you will get with the fuel pressure changes.
http://www.witchhunter.com/injectorcalc1.php
Bill B
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Charlie England
Sent: Saturday, January 19, 2013 10:43 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Renesis fuel pressure question
While perusing an old document describing the then-new Renesis, I noticed that the fuel pressure was spec'd at 392kPa, which if Google is to be believed, amounts to 52psi. How many of you are running pressure that high? If you're not ( I seem to remember 30-35 for a lot of installations), how much does that affect injector capacity and fuel atomization (efficiency)?
Charlie
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