Help with Closed Loop

Give input on tuning as well as any tips and tricks you may have. Also feel free to share base mapping files for various engine types.
matthud322
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Help with Closed Loop

Post by matthud322 »

I've been slowly getting my engine mapped. Today I played around with the closed loop settings. I followed some of the suggestions from the other post. The settings work great at idle. However, any time I give it throttle, the LAMB % goes to 0.0 no matter what. Attached is a graph of Lamb,Lamb %, and RPM. My lambda table is currently set to 13.0 all throughout. Why would the closed loop basically turn off when I give it throttle? And the moment I drop back to idle, the closed loop kicks back in and holds to 13.0, until I increase the throttle again.

My setting is set to turn off closed loop above 14000, and throttle of 101%. So I don't think that is the problem.

Below is a shot of the graph.

Image
peter575
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Re: Help with Closed Loop

Post by peter575 »

And if you just it the pedal very slowly?
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matthud322
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Re: Help with Closed Loop

Post by matthud322 »

Those were very slow throttle engagements. 1% throttle over 8 seconds. Held at 2% for 15 seconds, and the lamb % stayed at 0 for the entire time.
VR6Turbo
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Re: Help with Closed Loop

Post by VR6Turbo »

What is your over-run throttle position set to?

Is it a black "0.0" as in turned off or blue "0.0" as in not making any adjustments?
matthud322
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Re: Help with Closed Loop

Post by matthud322 »

Over run throttle position is 3%.
It had to have been black, it was not close to the target value at the time. Lambda was near 10, the target was 13. And it was just adjusting prior to the throttle application.
V40gt
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Re: Help with Closed Loop

Post by V40gt »

Maybe there is an issue with e-race, i had it once:
If the max is 0, the data log is filtered so that everything above 0 is shown as 0.

Change the E-race graph limits to +20/-20% in the Lambda correction graph.

what are the correction limits and other parameters, can you post a screenshot of the parameters?
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matthud322
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Re: Help with Closed Loop

Post by matthud322 »

Its not erace, the DAT file shows 0s, and I saw it on the real time chart.

cant post a shot right now, but the correction limits on lambda are +/- 15%.
matthud322
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Re: Help with Closed Loop

Post by matthud322 »

Here is a copy of my lambda parameters.
Image
V40gt
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Re: Help with Closed Loop

Post by V40gt »

I have the same sensor (innovate LM1/LC1) and its been working fine for over two years now. Every single parameter you have looks 99% same as mine, Except i have MAP as load and "suspend closed loop >100mV" is not checked..
:?: :?: ???
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86sixsix
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Re: Help with Closed Loop

Post by 86sixsix »

matthud322 wrote:Those were very slow throttle engagements. 1% throttle over 8 seconds. Held at 2% for 15 seconds, and the lamb % stayed at 0 for the entire time.
matthud322 wrote:Over run throttle position is 3%.
1% or 2% is less than 3% hence no corrections
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