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Jim_Coupe
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« on: August 05, 2015, 06:02:45 AM »
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Heres a log that i did from my E85 3.2 Turbo machine. Please tell me that you think..
1. I can se that the STFT is compensating up to 22.7% at higher RPM and LOAD
2. The Ignition looks a bit high to me at 100% load and 6700 rpm.
3. The AFR looks ok right?
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E85oholic
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eliotroyano
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« Reply #1 on: August 07, 2015, 07:21:40 AM »
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Sorry to send you an off topic question, but which software are you using to present that way those logs?
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IamwhoIam
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« Reply #2 on: August 07, 2015, 08:33:16 AM »
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The AFR looks right?  9:1 at part throttle? |
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I have no logs because I have a boost gauge (makes things easier)
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nyet
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« Reply #3 on: August 07, 2015, 09:29:45 AM »
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Sorry to send you an off topic question, but which software are you using to present that way those logs?
2nd Also I have been meaning to add heat maps to ECUxPlot but still haven't found time  |
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Jim_Coupe
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« Reply #4 on: August 08, 2015, 04:29:41 AM »
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Sorry to send you an off topic question, but which software are you using to present that way those logs?
Its called MEgalog viewer its really nice i think.. I Use Torque and in that app you can add all the PID´s in the settings menu. I hav a bluetooth ELM scanner connected to the phone.. But a scanner with better sample rate would be fine.. https://www.efianalytics.com/MegaLogViewer/ |
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E85oholic
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Jim_Coupe
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« Reply #5 on: August 08, 2015, 04:45:14 AM »
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Ok as I can tell of this log plot.
AFR plot: AFR should be 9.7 @ E85 fuel.. Looks like im running fet everrwhere?
IGN plot: Hmm i cant undertand exactly what happens under 100% load and 3200 rpm.. the ing is very weak.. Is that when the turbo kicks in or what? ignition adaptive adaptive? And Is my ignition to low on E85?
STFT plot: Looks like STFT compensates very much in some areas. LTFT was disabled when i logged this.
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E85oholic
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Snow Trooper
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« Reply #6 on: August 09, 2015, 01:59:29 PM »
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People seem to commonly get confused with afr and alternative fuels. You still need to target something leaner, like 11.4:1 on e85.
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cartoons?
6A 61 72 65 64 40 76 6C 6D 73 70 65 63
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Jim_Coupe
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« Reply #7 on: August 09, 2015, 02:29:05 PM »
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E85 should be around 9.7 ?
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E85oholic
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technic
Full Member
Karma: +18/-5
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Posts: 227
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« Reply #8 on: August 09, 2015, 11:14:08 PM »
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Jim_coupe, I suggest you use lambda instead of afr. Stochiometric is always one, and you can start comparing from there. It's easier imho
Ignitionmap is best worked out with mbt measurements on a dyno. Knocksensors are calibrated for petrol, so you can't rely on them.
(Maybe knockfilters can be modified to better hear CF for ethanol, but I haven't really tried)
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Jim_Coupe
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« Reply #9 on: August 10, 2015, 04:06:53 AM »
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Knocking is knocking isnt it? With E85 it doesnt knock anyway.. it just get warm.
Lambda? AFR is more accurate?
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E85oholic
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adam-
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« Reply #10 on: August 10, 2015, 05:29:32 AM »
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AFR is just lambda multiplied by a conversion factor. It cannot be any more accurate than lambda.
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Snow Trooper
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« Reply #11 on: August 10, 2015, 08:04:42 AM »
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jim, your sensors are likely calibrated for gasoline at 14.7:1.
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cartoons?
6A 61 72 65 64 40 76 6C 6D 73 70 65 63
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NOTORIOUS VR
Administrator
Hero Member
Karma: +58/-7
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« Reply #12 on: August 10, 2015, 09:23:23 AM »
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E85 should be around 9.7 ?
Lambda 1 on an E85 scale is right around 9.7 yes.. if you're logging in an E85 converted scale then you are ok... Most don't and deal with Lambda or the normal Gasoline scale AFR. |
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Snow Trooper
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« Reply #13 on: August 10, 2015, 09:34:17 AM »
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And i get the impression he is using factory sensor data and or a wideband with a gas scale and therefore is crazy rich.
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cartoons?
6A 61 72 65 64 40 76 6C 6D 73 70 65 63
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Jim_Coupe
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« Reply #14 on: August 10, 2015, 11:40:19 AM »
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jim, your sensors are likely calibrated for gasoline at 14.7:1.
Well I hope not.. They are calibrated towards fresh AIR at factory 21:0 |
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E85oholic
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