trinidefender wrote: ↑
Mon Jul 22, 2019 2:30 am
The injector is placed outside with a small amount of fuel being sprayed at the prechamber nozzles charging the prechamber. The spark plugs are in the prechamber. This is the most likely configuration.
Shooting fuel ~40mm across the combustion chamber toward a bulb with microscopic holes drilled into it, holes sized for the creation of tuned gas/plasma jets and not for conveying liquids, and expecting the right amount of fuel to reliable go through those tiny holes to collect inside the bulb, seems unlikely.
I should add that my last post about fuel rails applies to Merc but not necessarily Ferrari.
Below is an image of the Ferrari 2014(?) power unit. Clealy visible are three rigid hydraulic lines running down the center of the cam cover. If they are not for oil or coolant, they could very well be fuel lines. They look more like high pressure fuel lines. Right next to them are spark plug wires. If so there is the as-published TJI system. Which make me wonder why we ever considered the whole 'shoot the fuel in from the outside' concept here on the forum.