tasdrouille -
Quote:
Originally Posted by tasdrouille
Partly true. The fuel indeed helps with cooling the walls, but temperature peaks at a bit leaner than stoich, and tapers on both sides. Running very lean or very rich lowers temperature, running a bit lean leads highest temps.
See the graph in this document.
The nasty stuff happens simply because you're running too hot, not as a direct cause of running too lean. As you said solution to run cooler is to run richer. But if the engine could run very lean, temps would be down. Since most of the time when you need to run cooler you also want to make big power, you go rich as going very lean leads to a reduction in power. |
This is what I have read, but I am unable to describe it this well.
CarloSW2