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Re: Fuel question


On 13 Jul 99, at 22:33, Steven Ayres wrote:

> > lower-octane fuel burns *hotter*.
> 
> JimA=> Not true. 
> 
> OK, tell me where I get off track: 
> 
> Octane is added to fuel to slow down the burn. 

Right here. Higher octane gas does not burn any slower or faster than 
low octane gas. A high octane rating just means that the fuel is less 
likely to combust spontaneously under compression (dieseling.)
This just allows the combustion to be controlled by the spark rather 
than by the somewhat random influences of knock.

Jim
-
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
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