Alfa Romeo 156 1.9 JTD 85 kW Map Locations

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby MHB2011 » Wed Jul 05, 2017 4:25 pm

Ok, I managed to get 70mm3 just with with modified Driver wish , Torque limit, Smoke limit and IQvsTemp map.
On boost map i just changed last number 64mm3 to 70mm3 because i think i can get 70mm3 with that pressure.
Other maps support IQ up to 70mm3.

Now i want to get even more IQ (80mm3) and i need to remap Boost map , boost limit , smoke limit map , SOI , duration , N75 and rail pressure ?

Can u give me some directions ?

I found:
Duration: 7240E 20x16
Duration: 726DE 20x16
Boost map : 77C1C 16x16
Boost limit map : 77A2C 10x10
SOI with pilot : 7316E 20x20
SOI without pilot : 746B0 16x16
N75 LDR open loop, duty cycle setpoint (economical driving) : 7702A 16x16
N75 LDR open loop, duty cycle setpoint (sporty driving) : 77328 10x10
N75 LDR open loop, duty cycle setpoint (transient control op.) : 777F8 16x16
Rail Pressure Limiter with high fuel temp: 79ACC 8x8
Rail pressure limit : 79D4C 8x16
Rail pressure map : 7A46C 16x16

Here are my boost and smoke limit maps:
http://imgur.com/a/Kd6GI
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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby jtdpow » Wed Jul 05, 2017 9:52 pm

sorry but my laptop is dead and a cant help you in a few days

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby MHB2011 » Thu Jul 06, 2017 11:55 am

Ok when u get your laptop back if its possible please try to explain me how u calculate Duration. Beacuse its in microseconds. How u convert it to crankshaft rotation angle ?

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby jtdpow » Fri Jul 07, 2017 9:12 am

duration is in microsecond,use linear interpolation to modify it,soi its in crankshaft angle,the values tou see in soi maps its not microseconds,change the whole map factor to the factor of soi and youll see the values in cranksjaft degreess

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby MHB2011 » Fri Jul 07, 2017 2:04 pm

How u use linear interpolation if u dont have two known points ?

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby jtdpow » Fri Jul 07, 2017 5:52 pm

why you dont have two known points??
for example;if 50mm3 are 930 mocroseconds and 60mm3 are 1000 microseconds,now you have two known points,have you??
do you know how to use linear interpolation??

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby MHB2011 » Fri Jul 07, 2017 6:55 pm

Ofc i know. For linear interoplation u need to have 1 point lower and 1 point higher at least , and if i want 80mm3 all points are lower.

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby MHB2011 » Fri Jul 07, 2017 7:32 pm

I mean I can do it but this number is not 100% correct ! Also if u look at 60mm3, 65mm3 and 70mm3 all three have duration of 4000 μs at 60 Bar !! So if u do interpolation between 50 and 60 u ll get 4400μs for 80mm3 which is probably incorrect .

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby jtdpow » Fri Jul 07, 2017 10:07 pm

you dont understand the map,these values are at 500 and 1000 rpm and the car never inject 60 or 65 mm3 at these revs,that is why the values are the same

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Re: Alfa Romeo 156 1.9 JTD 85 kW Map Locations

Postby MHB2011 » Fri Jul 07, 2017 11:12 pm

Ok. Thats why am asking for help.
Does this values looks ok ?
http://prntscr.com/fsym9w
I used linear inetrepolation between 50mm3 and 70mm3.

What about SOI ? I noticed all values after 55mm3 are the same (in SOI map). Is this because rail pressure ends on 55mm3? How do i modify this map to add 80mm3 ? Also do i need to change SOI with pilot or both (with and without).

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