Quote:
Originally Posted by Varn
If it isnt the flame front then surly it is something else. Probably run away heat.
|
In a spark ignited engine, the combustion process is limited by flame speed because the flame is propogating through a premixed miture (
limited by chemistry). In a diesel, the combustion process is limited by the mixing process--the air needs to get to the fuel before it can burn (
limited by fluid motion). At some point it just can't mix fast enough to burn all the fuel. That's why you can't typically spin a diesel as fast as a gasser.