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Why is this not used at all? TJI -Turbulent Jet Ignition, as used in F1 and now in Stellantis New Hurricane 4 engine..
Its supposed to be very complex but it is most likely not when you don't have to care about emissions...Especially when you check out what these guys have done... https://pulse-jetignition.co.uk/shop These guys have used it on motorcycles and cars (Porsche flat six etc) and planes long before F1 did.
Its a cap/cone below a revised smaller spark plug with holes in the cone end of the cap. Retuning of ignition and fueling as well and filddeling with mechanics... A faster and stronger combustion process is the result. This type is a Passive TJI and will not work as much in lean situations, but what do we care, stoiciometric operation is more than good enough....
Flame front propagation is much faster so combustion goes faster and cleaner
Cylinder pressure is higher and comes earlier which will ensure
Your car will not be as knock limited with you current compression, it can therefore be increased
Lowered EGT
Increased power and torque
"Combustion comparison shows that TJI can effectively shorten the ignition delay period and combustion duration. Especially under lean conditions with an excess air ratio (λ) being 1.3, TJI can shorten the combustion duration by 45 % compared with SI"
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