Strange fuel table

[Alex182]

Hi,

 

we're currently tuning a RB25 Neo engine and got some trouble dialing in the fueling correctly. WOT Fueling is just fine but got trouble with consistent fueling on cruising (fluctuations) and tip in.
The fueling map looks realy strange, but we've already double and triple checked the fuel pressure, deadtimes and even changed to new injectors and fuel pump.

Anyone who'S got an idea what causes that kind of a curve in the fueling map?

Many thanks in advance!

BR
Alex

 

[Davidv]

Is that modeled fuel or traditional?

[Alex182]

Traditional fuel equation

[Simon]

I would check the injector dead times and the short pulse width adder table figures are correct for the injectors.

[gojira]

short pulse widht adder table is not correct to see on this fuel table

[Alex182]

Thanks for the input. Indeed, I doublechecked dead times and tried different setups, but they seem to be spot on but I didn't do anything on the short pw adder yet.

 

I'll check that, thanks a lot!