Quote:
Originally Posted by Kodename47
@ thambu19 did you look at my DI calculator I posted earlier? The DI injection timing is in the Romraider definitions. |
I saw your linearization curve of pulsewidth to injector mass. For engines running constant rail pressure that goes out of the equation. From your analysis I think this engine has varying rail pressure.
This table is what gets used when engine is running open loop fuelling combined with airflow estimation. Usually this table is not messed with unless for E85 conversion. One easy way to make an engine accept E85 without messing with MAF scaling is to adjust this pulsewidth to mass curve and move it up by roughly 40% so the engine commands larger pulsewidth for the same requested fuel mass which is indeed calculated from airflow prediction/measurement.
Adjusting the MAF scaling isnt really the appropriate way to adjust for E85. If you think about it the airflow doesnt really change just because we are running E85 and as a matter of fact it actually drops due to the higher Fuel to Air ratio