NL_Fer wrote:I have read an article about how the change spray paterns of injectors. What if they can create an injector which only blows the first puff of fuel in the pre chamber and the rest in de main chamber.
So a few miliseconds opening will only fuel the pre chamber and longer opening will fuel thenmain chamber.
Or an injector that sprays out via holes making 6 lobes of fuel (for want of a number) one of which goes to the pre-chamber (PC) and the other holes/ports/lobes of fuel to the combustion chamber (CC), no need for anything more complex... The hole/port to the PC could also be sized smaller in diameter to get this 3% lobe to PC and 97% to CC mix that's been bandied about.
The pre-chamber is aerated as part of the 4 stroke cycle - as we can't have more than 4 valves:
FIA rulez wrote:
5.1.8 Engines must have two inlet and two exhaust valves per cylinder.
Only reciprocating poppet valves with axial displacement are permitted.
The sealing interface between the moving valve component and the stationary engine
component must be circular
Presumably the holes in the pre-chamber are sufficient to allow this...