Yes, I know how to calculate EOI. I put some calculator that I think is OK here:
tuning-calculator-for-edc15c7-t7157But I think that EOI has nothing to do with duration of injection and IQ quantity. You are right, look to RPC map, for some RPMs and desired IQ there is CR pressure. And for that CR pressure and desired IQ in duration map there is injection energizing time. So for really good calculations, there should be some more parameters known; delay of opening injector, flow charactesristics of injector, delay of closing injector, difference between cylinder and CR pressure.
As I said, stock duration map is very strange, and had nothing to do with linear interpolation or common sense. Here is example:
For 2000 RPMs and IQ > 50mm^3 there is desired CR pressure of 1000 bar. Now look at duration map for this CR pressure and IQ of 50 mm^3. There is duration of 814 us. For IQ = 60mm^3, duration is 910. That is a difference of 96 us for 10mm^3 difference. And for IQ= 65mm^3, there is value of 1025 us. That is 115 us difference of duration for 5 mm^3 increase (from 60 to 65) what is bigger than 10mm^3 increase (from 50 to 60mm^3), And now, for 70mm^3 there is value of 1127 us. That is difference of 102us for 5mm^3 increase (from 65 to 70). So, why is difference between 50 and 60mm^3 lower than 5mm^3 increase between 60 to 65 and 65 to 70?
Does not make sence....we are talking about same CR pressure so IQ flow through injector should be more likely linear with increasing duration. But in stock map...it is far from that.
Maybe I'm not considering some other things...so if someone can actually explain this to me...please do.
What are correct values for duration in your opinion?