[SEL] Fuels, Octane, etc.

[Curt]

To supplement yesterdays discussion on fuels I was luck enough to find a 
chemical book that offers a very nice explanation of the role of 
iso-octane in the prevention of knocking in an engine. It tells of the 
octane rating and how the scale was derived using Iso-octane and 
n-heptane as the extremes. There is also an explanation of tetra ethyl 
lead and even how it is made.

I have scanned the pages and here are the links:

http://www.oldengine.org/members/holland/images/fuels/octane1.pdf
http://www.oldengine.org/members/holland/images/fuels/octane2.pdf
http://www.oldengine.org/members/holland/images/fuels/octane3.pdf

Yesterday I mentioned I had never heard a propane engine knock. There is 
good reason. In the chart of octane ratings by fuel, propane is near the 
top of the list at 100 octane.

For shits and giggles I scanned the pages on cetane rating for the 
diesel enthusiasts. Here are the links:
http://www.oldengine.org/members/holland/images/fuels/cetane1.pdf
http://www.oldengine.org/members/holland/images/fuels/cetane2.pdf   
(sorry about the large file size- dunno why it did this)


Also I thought information on producer gas might be of interest. Here 
are the scans of those pages:
http://www.oldengine.org/members/holland/images/fuels/producer1.pdf
http://www.oldengine.org/members/holland/images/fuels/producer2.pdf
http://www.oldengine.org/members/holland/images/fuels/producer3.pdf

Hope you find this useful.
Curt Holland
Gastonia, NC