Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Fri, 21 Jan 2005 16:00:25 -0500 Message-ID: X-Original-Return-Path: Received: from systems3.net ([68.14.236.16] verified) by logan.com (CommuniGate Pro SMTP 4.2.8) with ESMTP-TLS id 616637 for lml@lancaironline.net; Fri, 21 Jan 2005 15:48:32 -0500 Received-SPF: none receiver=logan.com; client-ip=68.14.236.16; envelope-from=cberland@systems3.net Received: from systems0d3b724 ([192.168.1.81]) by systems3.net (8.13.1/8.13.1/Debian-12) with SMTP id j0LKm3n1021003 for ; Fri, 21 Jan 2005 13:48:03 -0700 X-Original-Message-ID: <00d601c4fff9$cb0be330$5101a8c0@systems0d3b724> From: "Craig Berland" X-Original-To: "Lancair Mail List" Subject: [LML] Re: IV-P continental detonati.. X-Original-Date: Fri, 21 Jan 2005 13:42:54 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00D3_01C4FFBF.1BA178E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 X-Virus-Scanned: clamd / ClamAV version 0.75-1, clamav-milter version 0.75c on linux X-Virus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_00D3_01C4FFBF.1BA178E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable >I guess it's debatable whether or not it's compressor or turbine. = Results are the same. Compressor quits. As I understand it, and the fix = was to give the turbocharger more exhaust air volume at lower engine = rpm.< Charlie, I do not know much about turbos, but since all of the exhaust = gas goes thru the turbine housing, the only way to generate more torque = to the turbine wheel would be to reduce the turbine inlet size, = increasing the gas back pressure, and therefore increasing torque to the = turbine wheel. This seems to me it would work up to the point the gas = was approaching super sonic speed at which time the flow would greatly = diminish. I'm curious... I wonder if some planes exhibit turbine stall = due to cabin leaks and therefore higher demand on the turbos. Craig Berland ------=_NextPart_000_00D3_01C4FFBF.1BA178E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
>I guess it's debatable whether or = not it's=20 compressor or turbine. Results are the same.  Compressor = quits. As I=20 understand it, and the fix was to give the turbocharger more exhaust air = volume=20 at lower engine rpm.<
 
Charlie, I do not know much about = turbos, but since=20 all of the exhaust gas goes thru the turbine housing, the only way to = generate=20 more torque to the turbine wheel would be to reduce the = turbine inlet=20 size, increasing the gas back pressure, and therefore increasing = torque to=20 the turbine wheel. This seems to me it would work up to the point the = gas was=20 approaching super sonic speed at which time the flow would greatly = diminish. I'm=20 curious...  I wonder if some planes exhibit turbine stall due to = cabin=20 leaks and therefore higher demand on the turbos.
 
Craig = Berland
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