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hi we all know that when air temp increase the density will decrease so we have to reduce the amount of fuel , and we now that at high combustion temp we have to add more fuel ( richer AFR )how i can balance this and what should i do
You will add more fuel, but not as much as you would expect since the air temp was higher. You might have two compensation tables, say 2% less fuel due to air temp, but 10% more fuel due to high combustion temps (and higher EGT or Coolant Temp). Effectively 8% more fuel. I would focus on adding fuel for cooling, what you will find is that this effectively cools the airtemp in the cylinder and helps reduce the combustion temp.
So, add whatever fuel is required to hit your lambda target. If data shows that is a bit too much, then you can reduce it, but extra rich for cooling is safter than not rich enough.
so i can add extra fuel for cooling from fuel or VE or AFR target tables and reduce the fuel for the air temp from correction table
exactly
thanks man
