Return-Path: <13brv3@bellsouth.net> Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 558851 for flyrotary@lancaironline.net; Tue, 07 Dec 2004 08:20:45 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.66; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf18aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20041207132016.PTZU2443.imf18aec.mail.bellsouth.net@rd> for ; Tue, 7 Dec 2004 08:20:16 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Oxygen sensor Date: Tue, 7 Dec 2004 07:20:19 -0600 Message-ID: <000001c4dc5f$800854d0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C4DC2D.356DE4D0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C4DC2D.356DE4D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Rusty mentioned that in using the open loop system that the quantities of how much fuel to inject are stored in a = look up table and it is possible to change these values to "tweak" or "tune" = the system. How is this done?=20 =20 Hi Joe, =20 The EC-2 comes with a couple different pre-set defaults for the table, = but they're just meant to get you running on your initial starts. The = process to tune the EC-2 requires a manifold pressure gauge, and ideally a = mixture readout of some sort. You tie the airplane down, and adjust the = throttle in small increments of manifold pressure. For each MAP setting, you adjust = the mixture for the desired air fuel ratio, and save it to the table. Once = you go through all the settings, you've made your own look-up table, = specific to your individual engine installation. It usually takes a bit more = fiddling (at least for me), but that's the procedure. =20 =20 Rusty (now if you could just save the cals when you were finished...) =20 ------=_NextPart_000_0001_01C4DC2D.356DE4D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Rusty mentioned that in using the open loop
system = that the=20 quantities of how much fuel to inject are stored in a look
up table = and it is=20 possible to change these values to "tweak" or "tune" = the
system.  How is=20 this done? 

 
Hi=20 Joe,
 
The EC-2 = comes with a=20 couple different pre-set defaults for the table, but they're just meant = to get=20 you running on your initial starts.   The process to tune the = EC-2=20 requires a manifold pressure gauge, and ideally a mixture readout of = some=20 sort.  You tie the airplane down, and adjust the throttle in small=20 increments of manifold pressure.  For each MAP setting, you adjust = the=20 mixture for the desired air fuel ratio, and save it to the=20 table.  Once you go through all the settings, you've made your = own look-up table, specific to your individual engine=20 installation.  It usually takes a bit more fiddling (at least for = me), but=20 that's the procedure.  
 
Rusty = (now if you could=20 just save the cals when you were finished...)
 



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