MembersPage/Fero/Lancia (2007-02-17 17:35:39)

LANCIA DELTA INTEGRALE HF 16V rallycross cars.

There are 2 cars here, they are almost the same, except one of them has high impedance injectors, and the other have low impedance injectors. The cars was running succesfully from a year with VEMS, and with 1.0.38 firmware, everything was OK. They use start limiter and boost control too. Now the cars came back. They need ALS.

I uploaded the prereleased 1.1.7 firmware into one of them. Here are the config files:

[config.txt]

[tables.txt]

[lancia.msq]

ALS works almost perfect, but i realised some minor problems.

We need an ignition cut gauge in megatune to easy tuning, and also we should take into the log the actual ign cut.

Hungarian: Szerintem 0 foktól kellene megadni a retard értékét mert ha be van kapcsolva az ALS kapcsoló és elértük az idõlimitet akkor az alapjáratot a soft ign cut limiterrel tartja a kocsi, ekkor a gyakorlatban jólmûködõ ALS beállítások mellett még mindig retardolja a gyújtást a vezérlõegység, amire semmi szükségünk nincs. Nekünk csak a negatív gyújtástratomány a lényeges, és 0-tól nyugodtan válthatunk azonnal a táblázatban szereplõ gyújtásértékre.

Here is a log file, you can see that the spark retard and the fuel enrichment works good in the 1.17 firmware:

[ALS log]


One car runs fine with 1.1.8, but the other does not even start

We must closely examine the config and tables difference between the 2.

Old 1.0.38 firmware, but the isn't with the new 1.1.8 firmware.

Here are the files:

What files are these ?

You should provide all 3 sets so we can compare and give you better hints.

If the car runs with 1.0.38, there is no need to change the triggerwheel. We've seen that it's a sloppy wheel. In triggerlog the time ration is often 1.45 instead of 2.0 (remember: this is N-1 wheel) during cranking, but multitooth advanced filter (primary_trigger=09 instead of primary_trigger=01 switches multitooth advanced filter on) set to

After it starts, at RPM >500 the RPM variation during 180 crankdeg is not that severe.

Normal toothwidth=40, missing toothwidth=80 look good for 36-1 wheel. reset_engphase_after=160 looks good when no camsync is used.


Ignition outputs

You are using 2 different set of reftooth => ignout mapping.

This fires ignch2 after reftooth 0:

This fires ignch2 after reftooth 18:

That is 180 degrees difference. Clearly, only one can be good. This is the most likely reason for one engine not willing to start


Injector outputs

Please elaborate on injector wiring and sequence. If

than any (of the 4 possible) rotation of 01,04,08,02 mask-sequence (remember to read from bottom to top, in MegaTune) is good:

Note that this does not effect RPM=0, and even does not prevent the car from starting. But verify and confirm to prevent one cylinder leaning out in some conditions.


Other

3 degrees of cranking advance is extremely low (6..10 is more common), if the base timing is set correctly


News:

Because the RPM=0 problem, we thought to change the triggerwheel. It does not seems good too. It was rusty, and not harmness. So we chenged the wheel, also we'll use a HALL cranksensor insted of VR.

HALL_LAncia.jpg

The missing tooth is about 90 crankdegrees BTDC.

The trigger settings for this 12-1 wheel, with the new firmware(1.1.11) (GenBoard/UnderDevelopment/FirmwareChanges)

If ignch2 and ignch3 are used, in a wasted spark way:

Change to

if you connected ignchannels to cyl-pair 1,4 and 2,3 the other way around.

(or change h[2])


New megatune MSQ file.

http://www.vems.hu/files/Fero/Lancia/new/LanciaFeri_00.msq