Transient fueling explanation
11-08-2016, 10:25 AM
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Transient fueling explanation Can someone explain how the transient fueling works in E38/E67 pcm's, As far as I understand the stomp compensation is basically the accelerator pump, and the impact factor is the wall wetting fuel model? If there a process and how to adjust these tables correctly? TIA
11-11-2016, 01:27 PM
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TUA Fuel The "wall wetting" is known as TuaF and is part of the fuel equation.
The "days" of Batch Fire EMS's are over, with GDI eliminating TuaF.
My method with the Redline ECU-882 is the "state" the Injection Instant, then advance this event as RPM increases.
The BEST time to do this in the engine cycle is to fire the injector on a FULL open valve when the port flow is greatest.
Thus we have low Tau Fuel values in our object area.
Lance
The "days" of Batch Fire EMS's are over, with GDI eliminating TuaF.
My method with the Redline ECU-882 is the "state" the Injection Instant, then advance this event as RPM increases.
The BEST time to do this in the engine cycle is to fire the injector on a FULL open valve when the port flow is greatest.
Thus we have low Tau Fuel values in our object area.
Lance