X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ispmxmta05-srv.windstream.net ([166.102.165.166] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2496218 for flyrotary@lancaironline.net; Mon, 19 Nov 2007 13:45:24 -0500 Received-SPF: pass receiver=logan.com; client-ip=166.102.165.166; envelope-from=montyr2157@alltel.net Received: from ispmxaamta04-gx.windstream.net ([71.29.241.31]) by ispmxmta05-srv.windstream.net with ESMTP id <20071119184430.KFTW19750.ispmxmta05-srv.windstream.net@ispmxaamta04-gx.windstream.net> for ; Mon, 19 Nov 2007 12:44:30 -0600 Received: from Thorstwin ([71.29.241.31]) by ispmxaamta04-gx.windstream.net with SMTP id <20071119184430.EQTT8365.ispmxaamta04-gx.windstream.net@Thorstwin> for ; Mon, 19 Nov 2007 12:44:30 -0600 Message-ID: <000001c82adc$3d672240$6501a8c0@Thorstwin> From: "M Roberts" To: "Rotary motors in aircraft" Subject: Re: 16X Rotary Engine Date: Mon, 19 Nov 2007 12:43:04 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002C_01C82AA9.BA9F49A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_002C_01C82AA9.BA9F49A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, I'm not sure that a gasoline fueled 16X as pictured would need 18Kpsi of = injection pressure. Where they have the injector located, it could = inject before the majority of the compression takes place. Even if it = were timed at the last second before the injection port was closed, it = still isn't anywhere near TDC.=20 I do wonder about those other two bosses.......Common rail spark = assisted turbocharged, heavy fuel????? If so a longer stroke would = definitely be an advantage. Probably would need an electrically assisted = turbo to get the thing to start. From the location of the bosses, timing = would look to be very early on the injection. Then again, I have no = experience with a spark assisted low compression diesel. To get any kind = of efficiency you would have to have a turbo with a 2/1 pressure ratio = to get the engine pressures high enough.=20 Monty Bobby, For gasoline N/A direct injection requires around 18K psi. Diesels use = as high as 22K psi.=20 While this sounds scary, the equipment has been around for years and has = proven reliability. Bill Jepson=20 ------=_NextPart_000_002C_01C82AA9.BA9F49A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Bill,

I'm not sure = that a gasoline=20 fueled 16X as pictured would need 18Kpsi of = injection=20 pressure. Where they have the injector located, it could inject before = the=20 majority of the compression takes place. Even if it were timed at the = last=20 second before the injection port was closed, it still isn't anywhere = near TDC.=20

I do wonder about those = other two=20 bosses.......Common rail spark assisted turbocharged, heavy fuel????? If = so a=20 longer stroke would definitely be an advantage. Probably would need an=20 electrically assisted turbo to get the thing to start. From the location = of the=20 bosses, timing would look to be very early on the injection. Then = again, I=20 have no experience with a spark assisted low compression diesel. To get = any kind=20 of efficiency you would have to have a turbo with a 2/1 pressure ratio = to get=20 the engine pressures high enough.

Monty

Bobby,

For gasoline N/A direct injection = requires=20 around 18K psi. Diesels use as high as 22K psi.

While this sounds scary, the equipment = has been=20 around for years and has proven reliability.

Bill=20 Jepson

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