X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail34.syd.optusnet.com.au ([211.29.133.218] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTPS id 2580138 for flyrotary@lancaironline.net; Thu, 13 Dec 2007 16:53:03 -0500 Received-SPF: pass receiver=logan.com; client-ip=211.29.133.218; envelope-from=lendich@optusnet.com.au Received: from george (d211-31-119-124.dsl.nsw.optusnet.com.au [211.31.119.124]) by mail34.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id lBDLqGvc030408 for ; Fri, 14 Dec 2007 08:52:18 +1100 Message-ID: <004f01c83dd2$6f60a3d0$7c771fd3@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: HCCi Engine Technology Date: Fri, 14 Dec 2007 07:52:18 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004C_01C83E26.3FCF9FF0" 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 X-Antivirus: avast! (VPS 0657-0, 12/12/2006), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_004C_01C83E26.3FCF9FF0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, That was a quick response! Testing is currently being done by GM and others, the 1800cc engine = quoted was a Mercedes. They might be further down the track than Sandia = might think. I don't know if they use the exhaust gas to control flame = front or heat the inlet to ignition temperatures. The more I think about = it, the more it sounds like controlled detonation. George (down under) A second reply to the same post. I Went to the Sandia combustion labs. = A US department of energy lab. Their comments on the technology are as = mentioned before either high compression or intke heating are required. = Supercharging or intake is also a way to high cylinder pressure. Right = now they say that the trouble for the tech is controling the timing = event. They say the system works well but doesn't transition to high = load well. Right now another hopeful technology that's not ready quite = yet. Bill Jepson -----Original Message----- From: George Lendich To: Rotary motors in aircraft Sent: Wed, 12 Dec 2007 11:52 pm Subject: [FlyRotary] HCCi Engine Technology Bill, Here's a question for you - are you across the HCCI technology - = Homogeneous Charge Compression Ignition Engine? These engine combine the advantages of a petrol and diesel engines, = whereby a mixture of petrol air and recycled exhaust are ignited = spontaneously as in a diesel engine, resulting in lower peak temp, low = nitrous oxide emissions and a 15 to 20 increase in fuel economy. I don't = know if they use spark plugs - I'm guessing NOT. Sounds perfect for the rotary - we already have the exhaust emissions = fuel and air mix with the PP. I guess the difference between this and = detonation is flame front speed and how that's controlled ( perhaps with = the exhaust contamination). An 1800 cc HCCI engine (in a large sedan) develops 175KW and uses 6.1 = Litres per 100Km. George (down under) -------------------------------------------------------------------------= ----- More new features than ever. Check out the new AOL Mail! -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.503 / Virus Database: 269.17.1/1181 - Release Date: = 11/12/2007 5:05 PM ------=_NextPart_000_004C_01C83E26.3FCF9FF0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bill,
That was a quick response!
Testing is currently being done by GM = and others,=20 the 1800cc engine quoted was a Mercedes. They might be further down the = track=20 than Sandia might think. I don't know if they use the exhaust gas = to=20 control flame front or heat the inlet to ignition temperatures. The = more I=20 think about it, the more it sounds like controlled = detonation.
George (down under)
A=20 second reply to the same post. I Went to the Sandia combustion labs. A = US=20 department of energy lab. Their comments on the technology are as = mentioned=20 before either high compression or intke heating are required. = Supercharging or=20 intake is also a way to high cylinder pressure. Right now they say = that the=20 trouble for the tech is controling the timing event. They say the = system works=20 well but doesn't transition to high load well. Right now another = hopeful=20 technology that's not ready quite yet.
Bill = Jepson


-----Original=20 Message-----
From: George Lendich = <lendich@optusnet.com.au>
To:=20 Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: = Wed, 12=20 Dec 2007 11:52 pm
Subject: [FlyRotary] HCCi Engine = Technology

Bill,
Here's a question for you - are = you across=20 the HCCI technology - Homogeneous Charge Compression Ignition=20 Engine?
 
These engine combine the advantages = of a petrol=20 and diesel engines, whereby a mixture of petrol air and recycled = exhaust are=20 ignited spontaneously as in a diesel engine, resulting in lower peak = temp, low=20 nitrous oxide emissions and a 15 to 20 increase in fuel economy. I = don't know=20 if they use spark plugs - I'm guessing NOT.
 
Sounds perfect for the rotary - we = already have=20 the exhaust emissions fuel and air mix with the PP. I guess the = difference=20 between this and detonation is flame front speed and how that's = controlled (=20 perhaps with the exhaust contamination).
 
An 1800 cc HCCI engine (in a large=20 sedan) develops 175KW and uses 6.1 Litres per 100Km.
George (down = under)
More new features than ever. Check out the new AOL Mail!

No virus found in this incoming message.
Checked by AVG Free = Edition.
Version: 7.5.503 / Virus Database: 269.17.1/1181 - = Release Date:=20 11/12/2007 5:05 PM
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