Tuning for E10

[WHYTRYZ06]

What did the AFR values change to?

14.12 programmed into the lc1

0v=9.59
5v=19.19

and the 1v and 2v did as well

[5.7ute]

That still leaves the same expression as mr.prick gave. So you can program the 14.12 setting into the lm-1 & use mr.pricks expression in a calc pid to give you the correct AFR on both.

[WHYTRYZ06]

ute.

this is what joecar came up with


Based on the LC-1 being programmed for gas being 14.7, here's what I come up with:

GAS (stoich 14.63): {EXT.AD1} * 1.990 + 9.952
E10 (stoich 14.12): {EXT.AD1} * 1.921 + 9.605
E85 (stoich 9.78): {EXT.AD1} * 1.331 + 6.653

So for example, if the LC-1 was reporting 2.35V those equations would give:
gas AFR = 14.629
E10 AFR = 14.119
E85 AFR = 9.781

[WHYTRYZ06]

ute,

this is what mr.prick came up with
({EXT.AD1}*1.9203)+9.602

2.35 volts = 14.12 AFR
2.35 volts = 1.00 Lambda

and joecar

E10 (stoich 14.12): {EXT.AD1} * 1.921 + 9.605

pretty close if u ask me...

[mr.prick]

ute,

this is what mr.prick came up with
({EXT.AD1}*1.9203)+9.602

2.35 volts = 14.12 AFR
2.35 volts = 1.00 Lambda

and joecar

E10 (stoich 14.12): {EXT.AD1} * 1.921 + 9.605

pretty close if u ask me...

The PCM will not have 14.12 in {B3601} it will be 14.12xxx
Joe may have went the extra mile and did the proper conversion,
I used 14.12
If you want it perfect copy and paste {B3601} here.

Awesome work on the spreadsheet mr.prick.

Thanks.
I think this is a subject that gets overlooked.
It makes serial WBO2 that much more of a selling point for EFILive.

[WHYTRYZ06]

The PCM will not have 14.12 in {B3601} it will be 14.12xxx
Joe may have went the extra mile and did the proper conversion,
I used 14.12
If you want it perfect copy and paste {B3601} here.



Thanks.
I think this is a subject that gets overlooked.
It makes serial WBO2 that much more of a selling point for EFILive.

thanks 2 all 3 of u guys for the help;;;))))

[5.7ute]

The PCM will not have 14.12 in {B3601} it will be 14.12xxx
Joe may have went the extra mile and did the proper conversion,
I used 14.12
If you want it perfect copy and paste {B3601} here.



Thanks.
I think this is a subject that gets overlooked.
It makes serial WBO2 that much more of a selling point for EFILive.

It sure does.
In the next hour I will be doing some testing with the RR and B3601 (as well as some other stuff). Mainly to verify that IBPW will change with B3601. I will keep you posted.

[joecar]

...
Thanks.
I think this is a subject that gets overlooked.
It makes serial wbo2 that much more of a selling point for efilive.

+1.

[5.7ute]

mr.prick. I can verify that the pcm uses B3601 in calculating the pulsewidth. By using the RR in emulation mode at idle & first increasing B3601 to 18.1 & then decreasing to10:1 the idle was clearly affected. Check out around frame 350, where pw increases while commanded EQ stays constant & commanded AFR also changes.
This proves that
1 the pcm uses EQ in its tables.
2 that commanded AFR is a calculated value between whichever commanded fuel table is active & B3601. Hopefully this will clear up a few issues.
Sorry for making this thread go off on a bit of a tangent WHYTRYZ06 but I believe this is important information in relation to the original question.

[mr.prick]

Mick, in that log commanded AFR went lean & IBPW went up although
IBPW only went up a little.

WBO2 was not present, it would have been interesting to see if that changed as well.
ECT was low & high commanded EQ what happens in closed loop?

The RR sure does come in handy for experiment like these.