Newbie question about some maps inside EDC17C08 - 1.6CRDI

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Newbie question about some maps inside EDC17C08 - 1.6CRDI

Postby longgo » Fri Aug 04, 2023 12:23 am

Hello,

As the title stated, I`m one 100% "newbie" on the field of messing with car software. Also,wish to point out that I do not work as tuner or similar related profession! Neither consider it..
The cars are just hobby. Totally away from my profession.. and the one I wish to mess a bit is mine own KIA 1.6 CRDI - 128HP/260Nm
Bought already one file with maps description, but it was for a bit different ECU version than in mine. Boy, it was of a challenge to find location positions, which is similar which not.. :))) And not sure If even made it right..
Some maps where same type but different size or the other way around.. And almost all quite different that common VAG/BMW (again EDC17) what I found info about.

That been mentioned, here are the maps and data in question (original ECU file attached below):

inner_engine_torque.jpg


How exactly 260Nm engine can produce 1000Nm inner torque? If I know right, that ECU have virtual and "real" torque control but that is quite a "imaginary" number.
Some of the max limits present are: SVTL: 340Нм, gearbox limit 400Nm, the torque curve 270 > 200, driver wish 280Nm...elevation air pressure : 300Nm.. and so on.. in the range of 220-380...
If take the engine torque after loses ,about 260Nm@2000rpm, and multiply on the total gearbox ratio, I get about 3284Nm for 1st and 1768Nm for second, 1074Nm - for 3th.. Can be that kind of limiter..? Limit over 1000Nm total combined torque..
Although , then that is not so much "inner" one.
At least will make some sense for me, why that engine feel "alive" after 2000min-1. Like on 2th from 1100-1200min-1 feel similar or even below my old 1.6 petrol car that felt better in 1500-2000rpm on 2th. Can be wrong impression though..

In case change the factor to 0.05 , then can see a bit more "sensible" virtual torque , which again is way beyond the 300Nm (IQ50) what should be the peak one for this engine with stock FW. Actually start to look as that:

engine_speed_limit.jpg
vehicle_speed_limitation.jpg


Once again that 500.. What on earth.. ?
And as for the speed limiter make some sense for me..(the table, not the values) , that engine speed dependent table is "terra incoginta"..

Maybe in the same basket I can throw also that two as well:

gear_related.jpg


Both where not defined in the map file. I "found" them, and their location is in between the gear box maps.. Still, there is one mentioned inverse map for the load, what made me to think that are more like gear related limiters or transition curve data..
That`s why I hope someone will enlighten me..

And here is the last one: inside the map file there are five SOI maps ($14028A / $1404CE / $140712 / $140956 / $140B9A).
Around them are some correcting ones.. and small reference one. (based on the description)
So.. what is the logic behind them? If that are temperature related, should be more than five?
Before them, actually some rows before them but around the area, there is another one: $13CD62 - 8x1 , that look as that:

-1 0 1 2 3 4 5 6
-------------------
1 1 1 1 2 3 4 4


Can that be actually the SOI selector.. Similar is for the LAMBDA maps, and is quite close to that idea..
If yes, and assume 4 maps forward (upper map used) + one for reverse or EGR(?!) how should I consider the organization?
Lower address number higher map number.. or 4,3, EGR, 1, 2...

Thank you all for even red my messy post!
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