theoldwizard1 wrote:
pnichols wrote:
The new Ford V8 has 2 plugs per cylinder? Wow .... what's up with that?
For large bore engine it takes "time" for the "flame front" to travel across the piston top. The second plug starts a second flame front so for a faster "burn time".
The flame front being helped by spark plug fire originating in two places within large cylinder volumes makes complete sense.
Large piston displacement engines have been with us for decades. How much/often have they been designed with dual plugs per cylinder? That "seems" unusual to me, but maybe it's been going on for quite sometime in large displacement gas engines, unbeknownst to me. :h
I guess maybe dual plugs are not needed for the 6.8L V10 because each cylinder is a bit less volume than those in a larger bore V8 of the same overall displacement?