Does the VE value displayed in a log come from the VE table (or tables, if multifuel) or is it a calculated value derived from fuel flow, observed lambda, etc.? If it is a calculated VE, can it be used to tune the VE table?
Thanks in advance.
VE is a part of the speed density algorithm.
It is the value you need to determine during the tuning process.
In the log it is current VE from the table.
Thanks for the quick response.
So the value currently displayed in the log is the interpolated value from the VE table(s). Is the effective VE (as calculated from fuel dose, Lambda, etc.) computed? If so, could it be added to the list of items that can be graphed? It seems that would be useful in evaluating and tuning the VE table. I would assume the autotune tool is doing something similar.
Volumetric efficiency (VE) in internal combustion engines is a measure of how effectively the engine fills its cylinders with air during the intake stroke. It’s the ratio of the actual volume of air drawn into the cylinder to the theoretical volume the cylinder could hold. A higher VE indicates better engine breathing and more power potential.
It is a constant value that characterizes the engine.
You mistake the VE with the injectors PW what is calculated based on VE, air temperature, MAP, lambda target, etc.