ARMD - antirukelfunktion and timing oscillations

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Topic: ARMD - antirukelfunktion and timing oscillations (Read 108565 times)

olo

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #105 on: May 22, 2013, 03:06:26 AM »

Quote from: Rick on May 21, 2013, 12:48:16 AM

They are very likely not oscillations, but the result of different cylinders being sent to zwout.

Do You mean cylinder individual correction from KRRA?


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bk56190

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #106 on: June 23, 2013, 03:49:20 AM »

It was ARMD, KFDMDARO and KFDMDARU modified and no timing intervention at all


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dream3R

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #107 on: January 13, 2014, 09:42:01 AM »

I've looking at this with a view to seeing if the function is causing timing oscillations in my car.

Being Volvo the function is a little different, but does follow the FR, although tans is in there too.

This is what I'm seeing in my logs, not sure if it's ARMD or not at this stage.

From looking at the FR and code it looks like if dmar_w > 0 then it will set the b_ar bit.

I'll have to do some logging to verify.


« Last Edit: January 13, 2014, 09:43:58 AM by dream3R »	Logged

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dream3R

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	Re: « Reply #108 on: January 15, 2014, 05:08:47 AM »

Well it wasn't ARMD, thanks for the info though guys it helped.


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julex

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #109 on: January 21, 2014, 06:46:35 AM »

I would call it normal timing oscillations... ARMD, when it kicks in, causes wild ones, like -10deg swing between two samples. I've seen it going from 20 to -2 on my car when ARMD was kicking in, that's 22degree delta between two samples...


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dream3R

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #110 on: January 21, 2014, 06:54:24 AM »

Quote from: julex on January 21, 2014, 06:46:35 AM

That is the conclusion I drew as well...

I disabled ARMD and it didn't help either.


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phila_dot

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #111 on: January 21, 2014, 07:07:19 AM »

What are normal timing oscillations?

Or do you just mean outside of the torque model?


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dream3R

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #112 on: January 21, 2014, 07:09:16 AM »

I was thinking it was individual cylinder results.


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phila_dot

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #113 on: January 21, 2014, 07:38:26 AM »

Quote from: dream3R on January 21, 2014, 07:09:16 AM

I was thinking it was individual cylinder results.

I wouldn't call oscillation normal outside of KR


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dream3R

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #114 on: January 21, 2014, 07:40:46 AM »

You obviously know a lot more about this than me, can you comment on your thoughts then? I put it to bed as I couldn't see anything in my logs that made me concerned, well except this oscillation.


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dream3R

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #115 on: January 21, 2014, 08:02:45 AM »

Attached should be the correct CSV from my logger.


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nyet

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #116 on: January 21, 2014, 12:46:31 PM »

Quote from: dream3R on January 13, 2014, 09:42:01 AM

That is DEFINITELY not ARMD.


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prj

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #117 on: February 06, 2014, 02:36:50 AM »

It is normal, ZWOUT is always going to mildly go up and down when KR is active, because it is sampling one cylinder at a time.


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phila_dot

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	Re: ARMD - antirukelfunktion and timing oscillations « Reply #118 on: February 06, 2014, 05:06:14 AM »

Quote from: prj on February 06, 2014, 02:36:50 AM

It is normal, ZWOUT is always going to mildly go up and down when KR is active, because it is sampling one cylinder at a time.

Not sure if this is directed at my comment or at the graph, but that's why I said outside of KR.

With no knock retard the timing curve should be smooth.


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dream3R

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	Re: « Reply #119 on: February 06, 2014, 03:52:12 PM »

That's how I read your reply and I assume prj is meaning the same.

Thanks chaps


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