Originally Posted by Fuji Abound
Whilst I appreciate automotive engines are in many ways different animals they do bring home the extreme danger of operating an engine at peak fuel mixture efficiency unless you can be absolutely certain you can monitor and control all the factors that might just mean the engine has become over lean,
Fuji,
In the comment above, does 'over lean' mean closer to stochiametric than plan (on the rich side) or does it mean leaner than stochiametric (broadly Lean of Peak EGT in aviation speak). I always had the impression (as an uneducated bystander) that high performance auto engines where designed to run well ROP to get as much power as possible out of the small displacement without burning up/over pressuring and to lean out to stochiametric at lower power settings.
I would love to understand a bit more about what you have learned in the auto-engine space. My experience is all in aeroengines and I run it just the same as IO540 (LOP with fancy engine analyser and some trend analysis on the downloaded data)