vag TQ limiter q7 3.0tdi

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vag TQ limiter q7 3.0tdi

Postby adamek » Wed Feb 03, 2021 6:39 pm

hi.
i have a question about TQ limiter in VAG.
audi q7 3.0tdi 240HP 550NM org soft .

on the picture you can see TQ limiter and my question is way by 4k rpm is 498nm?

my calculation :
498nm by 4000rpm its about 283hp but car have only 240hp
https://iv.pl/images/366a925c9284b4f0d4b8a0d3eb3f5249.jpg
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Re: vag TQ limiter q7 3.0tdi

Postby RPM freak » Thu Feb 04, 2021 11:09 am

This sw is from BUG engine that has 500Nm @ 1750 - 2750 RPM & 233 PS (171 kW; 230 hp) @ 4000RPM

When you calculate the actual power you must take in account the engine friction torque losses.

In this case at 90 degC engine temp it is -50Nm @ 2000RPM & -80Nm @ 4000RPM

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Re: vag TQ limiter q7 3.0tdi

Postby adamek » Thu Feb 04, 2021 4:52 pm

can you tell me where is map adress this" nm corection by temperature"?

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Re: vag TQ limiter q7 3.0tdi

Postby RPM freak » Fri Feb 05, 2021 10:36 am

Friction torque losses at 1D277A
10x10 16bit HiLo
X = Engine temp
Y= RPM
Z = Friction torque losses

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Re: vag TQ limiter q7 3.0tdi

Postby adamek » Fri Feb 05, 2021 11:24 am

thanks

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