X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from access.aic-fl.com ([207.30.253.2] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2120951 for flyrotary@lancaironline.net; Wed, 20 Jun 2007 09:43:01 -0400 Received-SPF: softfail receiver=logan.com; client-ip=207.30.253.2; envelope-from=unicorn@gdsys.net Received: from main (gdsi-38.gdsys.net [207.30.255.38]) by access.aic-fl.com (Rockliffe SMTPRA 4.5.6) with SMTP id for ; Wed, 20 Jun 2007 08:38:52 -0500 Message-ID: <004201c7b340$dae04c40$2dff1ecf@main> From: "Richard Sohn" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Fw: Different Rotary Port configurations Date: Wed, 20 Jun 2007 08:41:49 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003F_01C7B316.D8192F10" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_003F_01C7B316.D8192F10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: Lehanover@aol.com=20 To: Rotary motors in aircraft=20 Sent: Wednesday, June 20, 2007 7:26 AM Subject: [FlyRotary] Re: Fw: Different Rotary Port configurations In a message dated 6/20/2007 2:44:33 A.M. Eastern Daylight Time, = WRJJRS@aol.com writes: The only cons I see to the system is the need to run a pump to feed = high pressure to the injectors. The plumbing must handle HIGH common = rail pressures of 1100 bar. Plumbing like this has been used on diesels = for ages though and has become ultra reliable. =20 For the near future I may have to come out of retirement and build = an engine. That 1100 bar, isn't that 16,170 PSI? Sounds like there will be a pricey cast iron pump in there somewhere.=20 Lynn E. Hanover These pressure levels are certainly correct for common rail diesel = injection. Most of them inject multiple squirts at each injection = stroke, depending on engine condition.=20 The question I would ask myself is, do I need that much pressure with = gas injection? The diesel ignition does not depend on mixture ratio, so = there is no flame probagation issue. The big factor for the diesel is = droplet size, meaning fuel surface area contacting where the hot air = starts combustion. Just some basic differences to be considered in the comparison. Richard Sohn N2071U -------------------------------------------------------------------------= ----- See what's free at AOL.com.=20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.472 / Virus Database: 269.9.1/854 - Release Date: = 6/19/2007 1:12 PM ------=_NextPart_000_003F_01C7B316.D8192F10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 Lehanover@aol.com
Sent: Wednesday, June 20, 2007 = 7:26=20 AM
Subject: [FlyRotary] Re: Fw: = Different=20 Rotary Port configurations

In a message dated 6/20/2007 2:44:33 A.M. Eastern Daylight Time, = WRJJRS@aol.com writes:
 The only cons I see to the system is the need to run = a pump to=20 feed high pressure to the injectors. The plumbing must handle HIGH = common=20 rail pressures of 1100 bar. Plumbing like this has been used on = diesels for=20 ages though and has become ultra reliable.  =
 
For the near future I may have to come out of retirement and = build an=20 engine. That 1100 bar, isn't that 16,170 PSI?
Sounds like there will be a pricey cast iron pump in there = somewhere.=20
 
Lynn E. Hanover

These pressure levels are certainly correct = for common=20 rail diesel injection. Most of them inject multiple squirts at each = injection=20 stroke, depending on engine condition.
The question I would ask myself is, do I need that = much=20 pressure with gas injection? The diesel ignition does not depend on = mixture=20 ratio, so there is no flame probagation issue. The big factor for the = diesel=20 is droplet size, meaning fuel surface area contacting where the hot = air starts=20 combustion.
Just some basic differences to be considered in = the=20 comparison.
 
Richard Sohn
N2071U


See what's free at AOL.com.=20

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.472 / Virus Database: 269.9.1/854 - Release = Date:=20 6/19/2007 1:12 PM
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