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FIA confirms blown diffuser regulations

The FIA confirms the blown diffuser rules that will be used for the remainder of the 2011 F1 season
The FIA has confirmed that the rules on off-throttle blown diffusers will revert to those in place for the European Grand Prix for the remainder of the 2011 F1 season.

The governing body had planned to ban the device at Silverstone only for a number of teams to lobby against the changes. The FIA then said it would reverse the ban if teams could agree on the matter, with lengthy discussions eventually ending in agreement being reached.

In a Q&A released today [Thursday], the FIA has now confirmed that the rules in place for the rest of 2011 will be those used in Valencia – which will mean a ban on changing engine maps between qualifying and races remains in place.

The Q&A, reproduced below, also gives a thorough insight into the situation that first developed at the Spanish Grand Prix before coming to a head at Silverstone...

Q:
This issue arose shortly before the Spanish Grand Prix. Was it initiated by the FIA or did it come from an F1 team?

A:
The matter was initiated by the FIA when facts concerning some quite extreme, and hitherto unseen, engine mapping began to emerge. We were concerned that exhaust tailpipes were being positioned and engine maps created with the primary objective of improving in the aerodynamic performance of the car. Prior to that it had been assumed that any aerodynamic benefits were incidental to the primary purpose of the engine and its exhausts, i.e. that of generating torque.

Q:
Why did you decide to act?

A:
We decided to act as, not only did we consider such extreme mapping to be arguably illegal, but also if such freedom was left unchecked it would result in the teams incurring significant further development costs during the season.

Q:
Is the off-throttle blown diffuser illegal under the 2011 technical regulations?

A:
We certainly consider them to be questionable, however, the key is whether or not we consider any particular engine map to have been created for any other reason than the generation of engine torque.

Q:
Is its illegality an unforeseen side-effect of the rule to ban F-Ducts?

A:
No, the two are unconnected.

Q:
Why was it not possible to simple introduce blanket limits on hot and cold-blowing and apply them equally to every car?

A:
This is precisely what we attempted to do in the first communication to the teams on 12 May. However, it soon became apparent that the matter was more complex than initially thought. The main problem was the difficulty of ensuring that teams were not prevented from using existing legitimate strategies whilst ensuring that the extreme mapping was no longer possible. This is why we postponed the introduction of the measures until the British Grand Prix.

There are also a number of other mechanical factors to take into account such as the architecture of the engine throttles themselves (butterfly or barrel operation).

Q:
What were the measures that were introduced for the European Grand Prix in Valencia?

A:




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Okay okay okay, for all those who are (or will be) saying that ferrari's recent form is from the diffuser Saga please do shut up. Ferrari were particularly fast ( the fastest ) in the middle sector in silverstone the only sector requires no braking at all. The blown diffuser is used to help braking stability and traction out of corners, so please think before posting any silly comment.

Skidmarks

July 14, 2011 9:12 PM

So rules are now fixed. Wonder for how long? If Fia told me grass was green i'd have to in outside and check, then go check again in 5 minutes to make sure they hadn't changed their minds. Jokers.



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