Has anybody info about vems VE, Spark, Lambdatarget map interpolation?
What cells are involved, what weight, and what is happen at the map edges?
THx
Not sure what happens at map edges - I try not to go there! (I suspect it simply "rails" to the last cell)
The interpolation is based on linear bivariate. So it takes the 4 corner points for the "cell" you're in and weights them based on the distance from each corner. You'll probably find a standard algorithm & explanation on wikipedia.
Thx!
So no more than 4 points..
Personally I wouldn´t want more then 4 points.
Especially if the engine has quick changes in VE
Only 4 points yes. It will rail to the edges of the map if exceeding the bounds with one exception for ignition :
The cranking advance will interpolate from the cranking threshold rpm up to the first rpm bin in the ignition table. I found out the hard way that this was the normal and actually pretty ok behaviour.