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rnagy86
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« Reply #105 on: August 28, 2017, 07:27:42 AM »
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Your KFLDIMX axis: Assume this a 5120? I don't see any pressure above the map limit in your logs so I am not sure.
Yes, it is 5120. |
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rnagy86
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« Reply #106 on: August 28, 2017, 08:20:30 AM »
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Not that this will matter, but you might want to smooth out your DRL where the calculated data ends. you have 40's in the 40 column, but 20s in the 50 column. 40 should be less than what you have in 50.
Well I actually have runs for the lower duty cycles (30,40) so it's weird that the tool did not pick them up. They do appear in the tool, but the generated DRL map does not have them. |
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armageddon
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« Reply #107 on: August 28, 2017, 09:12:17 AM »
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the tool is very picky with the values that you put in imx, and looking at the generated drl i guess that you are not filling that correctly
looking to your logs, you have too low drl values
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rnagy86
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« Reply #108 on: August 28, 2017, 09:16:23 AM »
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the tool is very picky with the values that you put in imx, and looking at the generated drl i guess that you are not filling that correctly
looking to your logs, you have too low drl values
Yeah I might have to do the runs in 4th gear... |
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SB_GLI
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« Reply #109 on: August 28, 2017, 12:47:06 PM »
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Well I actually have runs for the lower duty cycles (30,40) so it's weird that the tool did not pick them up.
They do appear in the tool, but the generated DRL map does not have them.
I think there is confusion as to how this tool works by some. Using pre-control, in a nutshell, takes the KFLDRL axis and converts it to pressure via KFLDIMX. Understand that, and you will understand how the tool works and why you are getting the generated values you are getting. |
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SB_GLI
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« Reply #110 on: August 28, 2017, 12:48:17 PM »
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the tool is very picky with the values that you put in imx, and looking at the generated drl i guess that you are not filling that correctly
looking to your logs, you have too low drl values
See my last post. The tool is not picky. |
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rnagy86
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« Reply #111 on: August 29, 2017, 12:49:19 AM »
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Okay, changing the axis of IMX, did "fix" the low duty issue, but did not get rid of the "valley" on spool, so that will be something else I guess. The IMX axis was divided by 2 due to 5120.  http://nerd.hu/tmp/20170829T085636.logAnyway it seems that there is not much left in the turbos so I don't see the point switching to stronger springs. |
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Lost
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« Reply #112 on: August 29, 2017, 04:13:21 AM »
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Your last DC axis is too high.
This means it reads the last column only past 2.25bar wich you are not reaching. Insted it looks up column under and it brings your boost down.
On your setup i would have 900 aka 1.8 bar as highest lookup column.
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SB_GLI
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« Reply #113 on: August 29, 2017, 05:37:33 AM »
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Your last DC axis is too high.
This means it reads the last column only past 2.25bar wich you are not reaching. Insted it looks up column under and it brings your boost down.
On your setup i would have 900 aka 1.8 bar as highest lookup column.
His axis value are good. His logs show that he's running 2.2 - 2.3bar boost. rnagy, you just have to manually smooth out the < 40 columns. You didn't have any significant data from your logs that filled those columns in, and therefore you are left with the default values. |
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« Reply #114 on: August 29, 2017, 05:50:54 AM »
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His axis value are good. His logs show that he's running 2.2 - 2.3bar boost.
rnagy, you just have to manually smooth out the < 40 columns. You didn't have any significant data from your logs that filled those columns in, and therefore you are left with the default values.
Not according the graph he posted on page 7. He was hardly peaking 2.2bar and dropped to 2bar all the way. |
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SB_GLI
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« Reply #115 on: August 29, 2017, 05:57:59 AM »
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Not according the graph he posted on page 7.
He was hardly peaking 2.2bar and dropped to 2bar all the way.
look again? |
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rnagy86
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« Reply #116 on: August 29, 2017, 06:01:20 AM »
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I think I did not upload a graph of the latest run, just the log and the tables.
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SB_GLI
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« Reply #117 on: August 29, 2017, 06:09:02 AM »
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I think I did not upload a graph of the latest run, just the log and the tables.
Not much work for the PID to do when you are requesting boost that requires your DC to be clamped hard at 95%. How's part throttle boost? |
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rnagy86
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« Reply #118 on: August 29, 2017, 10:27:18 AM »
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Not much work for the PID to do when you are requesting boost that requires your DC to be clamped hard at 95%.
How's part throttle boost?
Haha yeah, that's true, however since the turbos are done at least according to the compressor map, I don't see any good reason to go with stronger springs. I will check part throttle tomorrow and I will also try with a lower boost request curve to see if the PID works as it should. Regarding the dip in the spoolup area, maybe I should try to alter the rpm axis of Q2 and go from there. I am still trying to understand how Q2 is actually coming into the big picture. And of course thanks for all the help thus far guys! |
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SB_GLI
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« Reply #119 on: August 29, 2017, 10:39:05 AM »
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Once you lower the boost request it will be interesting to see if the maps generated from the tool will work as is, or if you need to tweak the kfldimx axis like I did. For me, it was as simple as adding 10% to the axis values to get it all on the money.
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