What does "Injection Limit - Acel/Decel Maybe" do?
Posted: June 15th, 2021, 3:18 am
I'm trying to make new tune for SkyActive-D that won't have issues that current tunes have (fuel cutoff).
By looking at logs of existing tunes, I've noticed that for all of them max amount of fuel is ~103mm^3/cycle, even though values in all limit tables are higher, and ECU should request more fuel.
Then I noticed that default limit in this table is 105. I created tune where I increased that value to 115 and indeed, I got more fuel injected, ~110mm^3/cycle.
But before I modify it, I would like to understand what it does, and what is the logic behind it.
In WinOLS this table is called MQREVLMT_D.
So what do X and Y axes represent?
By looking at logs of existing tunes, I've noticed that for all of them max amount of fuel is ~103mm^3/cycle, even though values in all limit tables are higher, and ECU should request more fuel.
Then I noticed that default limit in this table is 105. I created tune where I increased that value to 115 and indeed, I got more fuel injected, ~110mm^3/cycle.
But before I modify it, I would like to understand what it does, and what is the logic behind it.
In WinOLS this table is called MQREVLMT_D.
So what do X and Y axes represent?