Prechamber Mod "Flame" Front
Prechamber Mod "Flame" Front
while i would agree that timing is best kept as little as is practically possible. i am not entirely sure that this is slowing down the flame front. i suspect that with it being closer to DI that it is experiencing more of an ignition delay like most other diesels. the PC impingement ball tends to cancel most of that delay at operating temps in the standard PC. but potentially with this opened set up it could be running a bit cooler so it takes a bit of time to get going while still increasing the combustion propagation speed into the chamber. thats why i was wondering about the BSFC it should be relatively evident if the BSFC goes up appreciably that the slower combustion Delta P means more time spent BTDC fighting it reducing efficiency. in a gas engine the less timing needed the better the burn however you don't have to factor things like ignition delay and PC to main chamber transfer times so im still watching this to see the results in data.