X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao11.cox.net ([68.230.241.28] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 949873 for flyrotary@lancaironline.net; Thu, 19 May 2005 12:12:50 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.28; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao11.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050519161203.WKBM12158.fed1rmmtao11.cox.net@BigAl> for ; Thu, 19 May 2005 12:12:03 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: More MAP measurement questions Date: Thu, 19 May 2005 09:12:04 -0700 Message-ID: <002301c55c8d$7f4cc950$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0024_01C55C52.D2EDF150" 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_0024_01C55C52.D2EDF150 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 Al,Rusty and All, Excuse my ignorance here, I have absolutely no knowledge about how ECU's work. I've heard people say that it reads MAP settings - so what is a = MAP, and if it's different because the pressure is different at different = places in the inlet, how can the computer calculate the inlet charge and = timing. I'm confused! George ( down under) It is my understanding that the EC2 does not adjust timing but the = injectors pulse width only. Is this correct? Wendell =20 It also adjusts the ignition timing. I don't know what the formula is, = but I'm sure it uses RPM. =20 Al ------=_NextPart_000_0024_01C55C52.D2EDF150 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
=

 

Al,Rusty and = All,

Excuse my ignorance here, I = have absolutely no knowledge about how ECU's work. I've heard people say that = it reads MAP settings - so what is a MAP, and if it's different because the pressure is different at different places in the inlet, how can the = computer calculate the inlet charge and timing.

I'm = confused!

George ( down = under)

=

It = is my understanding that the EC2 does not adjust timing but the injectors = pulse width only. Is this correct?

Wendell

 

It also adjusts the ignition = timing.  I don’t know what the formula is, but I’m sure it uses = RPM.

 

Al

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