Can you explain how the DI + Port fuel mapping and control logic works? On the most basic level: is it pulsewidth and fuel pressure lookup tables? Or does it calculate a fuel quantity and then figure out what injection is needed to get there?
How is the DI injector flow characterized with regard to pulsewidth and fuel pressure? How much tuning is going to be needed to get the high pressure fuel pump to control fuel setpoint accurately?
Does the system support multiple DI injections? How is the split between the two injections controlled and the start of injection? How does that relate to the port injection control?
How is the tip-in acceleration fuel handled in both port and DI injection modes?
|