On the BorgWarner Turbo systems, which seems to provide outstanding and up-to-date info, we find this :
http://www.3k-warner.de/en/products/t_temp.asp
"The air ratio lambda at the rated output point is currently about lambda=0.75–0.85 since a portion of the fuel is used to cool the inside...
Does any one know the reason why the fantastic May "Fireball" combustion chamber retrofitted by Jaguar to its V12 was abandoned?
http://www.jagweb.com/jagworld/v12-engine/page4.html
Cheers
Aorangi
Does any know the reason for weird angles between cylinder banks of modern V engines?
For example, the VW W8 an W 12 are at a 72° angle which would be ideal for a W 10 but implies respectively 18° and 12° crankshaft throws inequality, which complicates machining and reduce stiffness ! Perhaps...