Ferrari Power Unit Hardware & Software

[gruntguru]

TFuelRailGDI = 96.7 TFuelRailGDI 1= 46.1 TFuelRailGDI 2= 96.7
Not surprisingly, they are running heated fuel (as did Honda in the RA168e). This system looks even smarter. Seems they have two fuel supplies - one at the max temp they need (TFuelRailGDI 2) and one near ambient (TFuelRailGDI 1). By varying the mix they can inject at any desired fuel temperature (TFuelRailGDI ) in between, and change the temperature - almost instantly.

By varying fuel injection temp (besides pressure), fuel spray properties are varied ie spray atomization. Sauter Mean Diameter is smaller (smaller droplets) when fuel is injected at higher temp., ref. Tagung Diesel- und Benzindirekteinspritzung

diesel fuel has high viscosity and so has high viscosity change with temperature ?
SI fuel does not

the high-toluene fuel of the 168e era (having a high BP) required controlled heating to improve/standardise its vapourisation
Cosworth talked about charge conditioning (being a reason why PI was good and DI unnecessary in N/A F1engines)
Honda research found PI and charge heating enabled efficient combustion of very lean (AFR 2) homogeneous mixtures

maybe F1 is adjusting fuel temp for similar reasons

Many of the traditional rules of thumb applying to a power-per-unit-displacement formula no longer apply under an "efficiency" formula. Rapid combustion of lean mixtures would almost certainly be enhanced by reduced droplet size and increased homogeneity in the "core" of the stratified charge. Hot fuel will most likely help.

[Webber2011]

telemetry from Haas F1 team:

https://pbs.twimg.com/media/CcpacV7WoAAyo9g.jpg:large
Source

Can someone analyze?

They musn't be Star Wars fans...............they're still asking if Obi is ok

[zac510]

The picture has gone from twitter- can somebody repost it, please?

[damager21]

The picture has gone from twitter- can somebody repost it, please?

Attaching the image

[GPR-A duplicate2]

Engine tokens spent
Ferrari 23 (9 remaining)
Honda 18 (14 remaining)
Mercedes 19 (13 remaining)
Renault 7 (25 remaining)

[FW17]

Possible location for the intercooler

So it looks like

Driver
Fuel Tank--Oil Tank-- Fuel Tank
Fuel Tank -Intercooler-Fuel Tank
Engine
Turbo

With the batter pack below the intercooler

[tmoneyr007]

The picture has gone from twitter- can somebody repost it, please?

Attaching the image

Can anyone explain what is going on with the L Radiator? Outlet temp higher than inlet? Quite a big variance between the L and R exhaust temps and L and R radiator "performance"?!

[zac510]

Can anyone explain what is going on with the L Radiator? Outlet temp higher than inlet? Quite a big variance between the L and R exhaust temps and L and R radiator "performance"?!

As the car's in the garage with pre-heated oil and water, heat-soak (ie from exhaust manifolds), less than normal (or zero) air flow through the radiators I guess that this is not really representative of on-track scenario.

[Mr.G]

Any news about the Kimi's failure?

[FrukostScones]

Any news about the Kimi's failure?

I think AMUS wrote "turbo failure".
what isn't very specific

[Mr.G]

Yes I know about that. I've been more interested in the reason why the turbo (if it really was turbo) failed. If it was overheating due to SC/RF or if Kimi messed it up.

[F1NAC]

Yes I know about that. I've been more interested in the reason why the turbo (if it really was turbo) failed. If it was overheating due to SC/RF or if Kimi messed it up.

unfortunately it's very unlikely that the team will give any explanation about this. But it could easily be Kimi's fault this year because of the new radio regulations. So possibly he messed up somewhere in settings. But then again it could be a mechanical failure. We'll never know

[wuzak]

I think they said it overheated during the red flag period.

[Blackout]

I wonder how the fire managed its way to the airbox? the airbox has no direct connection to the engine. It leads to the comlpressor. Did the latter burn? why would it? or did that fire come from the engine? in that case, did that fire exit the engine intake, run through the intercoolers then exit from the compressor? so how did the engine survive?

[gruntguru]

I wonder how the fire managed its way to the airbox? the airbox has no direct connection to the engine.

It may well be that the airbox ventilates the engine compartment as well as providing cold ram air to the intake.