Ok, a bit more computing here, hopefully not too scary.
Based on @MyNameIsNigel 's figure, we have
FTFave=1.074
FTFMax=1.088
KTF=0.987
Penergy(allocation)=139.5 MJ/lap
Pflow=89.5 kg/h
Ptank=68.3L
Denergy=138.7 MJ/lap
Dflow=80.2 kg/h
Dtank=54.3L
As published lately, ACO/FIA decides the fuel type should be E20/B10 diesel(base bio 10%). Source:
http://www.fia.com/sites/default/fil..._2014_fuel.pdf
For convenience and data availability, we refer to B20 diesel for energy density per kg.
http://www.rms.nsw.gov.au/heavyvehic...-biodiesel.pdf shows B20 is 2% down on energy comparing with petroleum diesel at 38.6MJ/L
http://www.biodiesel.org/docs/ffs-ba...5.pdf?sfvrsn=6 shows the density of B20 is 0.856
http://psrcentre.org/images/extraimages/212181.pdf reveals the energy density of E20 at 15 degrees Celsius is 32.43 MJ/L with 0.7541 kg/L.
As a result, the ED(petrol) and ED(diesel) in the formula of FTF should be 43MJ/kg and 44.19 MJ/kg respectively, which allows us to compute the ratio of BSFC(petrol) and BSFC(diesel) average. And the answer is 1.103, bigger than 1.090 previously. As for BSFCmax(petrol)/BSFCmax(diesel), it is 1.12 now. Diesel is still superior at peak power economy.
In terms of E(additional) (a.k.a, additional allocated diesel energy due to technology differences.), we can know easily compute it by maneuvering the formula of KTF. And the result is 1.71 MJ comparing with 2.24 MJ in the past.
So now what? We can compare stint lengths of petrol and diesel class based on BSFC fuel consumption and fuel tank volume. The ratio of petrol and diesel is 1.14 against 1.12 in the past.
However, the final number actually means nothing other than its relative relationship as it is not the fuel consumption per lap or per minute. It only means that although Audi is making progress in fuel economy, it still needs more pitstop than Toyota and Porsche. Thanks to the reduction in fuel tank volume, the more economic diesel engine is forcing Audi to refuel more! Ridiculous I'd say. Unless Audi's pace is better than Toyota and the gap is greater than 2013. There's no way it is going to win anything.