How is ICE output for ADUO

[WardenOfTheNorth]

Apologies if this has already been covered in another thread.

As I understand it, ADUO is triggered based on ICE power output alone.

Here's what I'm wondering: how is ICE output measured for the sake of ADUO?

Everyone seems to be assuming that Honda will get some help from it, but isn't it well known that they're running the ICE in a limited manner because of the vibrations. Could they be caught out if the test doesn't show it being down on power as much as some suspect?

I have a feeling that at least one engine manufacturer could end up being a surprise when ADUO results are announced.

[bananapeel23]

Everyone seems to be assuming that Honda will get some help from it, but isn't it well known that they're running the ICE in a limited manner because of the vibrations. Could they be caught out if the test doesn't show it being down on power as much as some suspect?

I have a feeling that at least one engine manufacturer could end up being a surprise when ADUO results are announced.

I would imagine that if vibrations are an issue, they will likely test the engine in a way that induces said vibrations. I would be extremely surprised if they just placed the ICE on a dyno and ran it at full beans. It should at least attempt to mirror real world conditions.

It will likely be done on track in some capacity, immediately following race 6.

[brakeboosted]

Apologies if this has already been covered in another thread.

As I understand it, ADUO is triggered based on ICE power output alone.

Here's what I'm wondering: how is ICE output measured for the sake of ADUO?

Everyone seems to be assuming that Honda will get some help from it, but isn't it well known that they're running the ICE in a limited manner because of the vibrations. Could they be caught out if the test doesn't show it being down on power as much as some suspect?

I have a feeling that at least one engine manufacturer could end up being a surprise when ADUO results are announced.

FIA establishes an ICE performance index. Reading the regs, it seems to account for on-track running given the note they leave at the end of Appendix C5 Article 4. However the measurement methodology is not disclosed publicly. FIA can request any relevant ICE data from teams, which presumably includes dyno data. The eval period is every 6 races, but it's unclear whether this will be adjusted due to the cancelation of the two races in April, there are, however, discussions at the moment.

Teams get allocated the additional test bench runs at the end of each evaluation period, as well as a downward adjustment on the power unit cost cap. They are only granted ADUO during the period they first qualify for it, it's not cumulative.


Presumably, being aware of the FIA's measurements, teams can loosely figure out whether they'll qualify and preemptively work on the updates they intend to introduce. That will come out of the normal PU cost cap and test bench hours until the additional resources are granted.

So they'd need the utmost confidence that they'll qualify if they plan to work preemptively. A good thing for Honda in this instance is that they don't supply any other teams, and they look likely to qualify. The regulations require manufacturers to supply their customers with at least 1 power unit of the same specification the weekend it gets introduced.

[gearboxtrouble]

I think you can work under the assumption you qualify and if you don't you just roll that development into the 2027 engine where the entire ICE can be changed if needed. It's pretty safe to say both Honda and Audi will qualify for some level of the ADUO allowance while RBPT and Ferrari might be more on the bubble than they seem to think (Mercedes can play games to deny them the boost).