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LOG Analysis Audi 2.5 AKE

 
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toni66

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Post17-10-2010, 22:08    Subject: LOG Analysis Audi 2.5 AKE Quote

Hello and a beautiful Sunday evening,

somewhere, i think that my audi is missing the right "push" sometimes. the top speed is okay, but there's a lack of pressure from below - and for a few weeks, i could still get a bit more acceleration after 160 km/h. now, after having had problems with my old laptop, i was finally able to create logs and save the original *.csv files as well as the processed *.xls files at /viewtopic.php?p=176068#176068.

I tried to keep my laptop running using a voltage converter connected to the cigarette lighter -> however, the connection to the USB port always broke. I tried 2 different products, but the problem occurred with both. Is this a coincidence, or is there some kind of overvoltage due to differences in the resistors, which the USB port is interpreting as a "safe" shutdown?

Thank you in advance for your help.
Audi A4 Avant 2.5 tdi MKB AKE
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dieselschrauber
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2018 Volkswagen T6 Consumption


Post17-10-2010, 22:57    Subject: LOG Analysis Audi 2.5 AKE Quote

Hello,

the values look good, but one thing, I don't like to say: Do you have a thick doormat that has slipped under the accelerator pedal? Because it wasn't properly stepped on. icon_cool.gif

Quote:
is it random, or is there some kind of overstimulation due to any potential differences in the electrodes?

Okay, here's the translation:

Correct, please NOT do any more!
Solution: http://shop.dieselschrauber.de/product_info.php?cPath=25&products_id=48

Hi, Rainer
Dipl.-Ing. (FH) Rainer Kaufmann - dieselschrauber VCDS Shop
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toni66

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Post18-10-2010, 17:13    Subject: LOG Analysis Audi 2.5 AKE Quote

hello,

I took out the big Persian cat this morning on my way to work icon_wink.gif. However, the Audi doesn't really convince me at the moment. We have Skoda 1.9 TDI with around 100 hp as company cars here. If I compare them (excluding the turbo lag of the 2.5TDI), I don't find the Audi particularly lively. Not even above 2500 rpm.

I will check the pedal position again this evening when the engine is running -> maybe it's not actually "pressed down" 100% - but this contradicts the gear shifting behavior of gears 1-3. It revs up so quickly that it sounds like a cross machine starting icon_eek.gif.

I tried to maintain a relatively constant acceleration up to 4000 RPM, while also providing multiple values for the other speed ranges.
or is it better for the LOG's to drop to 1000 or 1500 RPM in the 3rd or 4th gear, then to fully depress the pedal and accelerate to the red zone, and at 4000 RPM to try to maintain a constant speed and compensate with the pedal - which of course would no longer be fully depressed?

@rainerViewing profile: rainer:
was was with the thick doormat a reference that I might not have understood? icon_wink.gif

small addendum: the consumption has also increased to 10-12L. does anyone have an idea? there are no error logs in the memory.

Thank you and best regards.
Audi A4 Avant 2.5 tdi MKB AKE


Last edited on 18-10-2010, 17:35, edited 1 time in total.
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Post18-10-2010, 17:20    Subject: LOG Analysis Audi 2.5 AKE Quote

Hello,

Quote:
Was was mit dem dicken Fußmatte, war das eine Anspielung, die ich vielleicht nicht verstanden habe?

no, that's exactly what I meant. In the log, you can see that the driver's request (gas pedal position) is lower than the values for transmission torque or air mass.
Quote:
3086rpm 32.6mg/stroke Requirement Gas Pedal 46.1mg/stroke Limit Gear Torque 48.3mg/stroke Limit over Air Mass



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toni66

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Post18-10-2010, 18:06    Subject: LOG Analysis Audi 2.5 AKE Quote

uiuiui, the answer came pretty quickly, almost like real-time chat *g*.
I will review ULF's draft again tonight.
/viewtopic.php?t=12979 - Bitte besonders die folgenden Abschnitte lesen: "Gemeinsame wichtige und nützliche Messwerteblöcke bei 1,9l VP und PD-Motoren" ... Wenn noch jemand eine Idee hat - ich bin ganz Ohr ... Danke und einen schönen Feierabend ... LG
Audi A4 Avant 2.5 tdi MKB AKE
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