Mailing List flyrotary@lancaironline.net Message #40685
From: George Lendich <lendich@optusnet.com.au>
Subject: HCCi Engine Technology
Date: Thu, 13 Dec 2007 17:52:53 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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)
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