Renault Power Unit Hardware & Software

[Cold Fussion]

He said the Ferrari menu was easier to navigate. Not sure if he went as fas as knowing the characteristics of his 2015 Ferrari engine versus Raikkonens 2016.. I think you Maxie fans are stretching things too far.

I'm not a Mad Max fan but I think some of you are underestimating the current crop of drivers, they can usually detect subtle wing changes so why wouldn't they be able to detect subtle power unit differences?

Them being able to detect change is completely different to knowing what the exact change is. If they give an extra 1 turn of front wing maybe that gives them 1550 kg of front downforce instead of 1525 kg, that doesn't mean he has any clue to the amount of downforce he is running. Likewise there is no way he can tell a power differential just by blindly observing.

[djos]

Good point, that does make sense.

[ReoPTy]

When they asked teamboss Vasseur if Renault will show up with a split turbo he told the journalist "i don't think copying other teams is the right thing" and then told that Renault have their own concept..

IMO that means no split Turbo. And to be honest, i think that's bad news...

When asked if Renault was planning to adopt the Mercedes concept of a split turbine and compressor, Vasseur said: “It is a Renault concept...I think we don’t have to stick to the others on the engine."

[yener]

When they asked teamboss Vasseur if Renault will show up with a split turbo he told the journalist "i don't think copying other teams is the right thing" and then told that Renault have their own concept..

IMO that means no split Turbo. And to be honest, i think that's bad news...

When asked if Renault was planning to adopt the Mercedes concept of a split turbine and compressor, Vasseur said: “It is a Renault concept...I think we don’t have to stick to the others on the engine."

What he said is; It's a Renault concept, i don't think we should copy others. We showed good progress in the last 6-8 months. I f we want to make more progress, we should slightly change our current concept.

Now that's exactly what he said. With the 2017 regulations the cars will have more downforce, so the engine won't be as important as the last 4 seasons but it still be really important.

[ME4ME]

Now that's exactly what he said. With the 2017 regulations the cars will have more downforce, so the engine won't be as important as the last 4 seasons but it still be really important.

Arguably power will be more important, as in some corners where 2014-16 cars where limited by grip, 2017 cars will be limited by power to overcome drag.

but some places - like Monza, for example, where you will be taking a lot of downforce off because you have more drag from the wider tyres - I don't think we will see much difference in laptime at a track like that."

-Pat Symonds.
http://www.motorsport.com/f1/news/f1-20 ... ds-852911/

[FPV GTHO]

The bigger aero focus might make it all the more important to get the heat rejection figures lower on the engine. That will be a big factor on whether to go with a split turbo.

[Cold Fussion]

The bigger aero focus might make it all the more important to get the heat rejection figures lower on the engine. That will be a big factor on whether to go with a split turbo.

But the drag induced by the cooling system will be lower percentage of the total system drag next year. The heat rejection figures should be naturally going down anyway because of the ever increasing engine efficiency.

[gruntguru]

The bigger aero focus might make it all the more important to get the heat rejection figures lower on the engine. That will be a big factor on whether to go with a split turbo.

But the drag induced by the cooling system will be lower percentage of the total system drag next year. The heat rejection figures should be naturally going down anyway because of the ever increasing engine efficiency.

. . . and the gains are becoming incremental. The only way to significantly reduce the heat rejection from the heat exchangers is to increase the proportion of heat rejected to the exhaust.

[FPV GTHO]

The bigger aero focus might make it all the more important to get the heat rejection figures lower on the engine. That will be a big factor on whether to go with a split turbo.

But the drag induced by the cooling system will be lower percentage of the total system drag next year.

It's possible, but they could also be desperate for any reduction if thr drag increase is as big as predicted.

The heat rejection figures should be naturally going down anyway because of the ever increasing engine efficiency.

That would be relevant to the coolant radiators, but Renault has issues that require massive intercoolers.

[PlatinumZealot]

Engines will work harder to move heavier draggier cars hence the 5% alotted fuel increase. More heat will be rejected on average but only just so. The cars will be faster through the corners so higher exit speeds means less acceleration out of the corners which help fuel consumption.
The cars will punch a bigger hole trhough the air so there will be lower pressure around the back sides. Heat will be more easily extracted from the sidepods.

[Cold Fussion]

It's possible, but they could also be desperate for any reduction if thr drag increase is as big as predicted.

The heat rejection figures should be naturally going down anyway because of the ever increasing engine efficiency.

That would be relevant to the coolant radiators, but Renault has issues that require massive intercoolers.

Anything is possible but it's my opinion that the teams would have exploited all the low hanging fruits in the cooling system drag reduction. Are the Renault intercoolers air-air or air-water?

Engines will work harder to move heavier draggier cars hence the 5% alotted fuel increase. More heat will be rejected on average but only just so. The cars will be faster through the corners so higher exit speeds means less acceleration out of the corners which help fuel consumption.
The cars will punch a bigger hole trhough the air so there will be lower pressure around the back sides. Heat will be more easily extracted from the sidepods.

The 5% fuel increase is only for the race fuel total and not the fuel flow limit so shouldn't affect any heat rejection.

[FPV GTHO]

What I've read suggests all the Ferraris and the factory Mercs use W2A whilst everyone else is using A2A.

[wuzak]

What I've read suggests all the Ferraris and the factory Mercs use W2A whilst everyone else is using A2A.

Reports are that Ferrari and Mercedes use a combination of air-to-air and water-to-air intercoolers.

Certainly Mercedes' customers use only air-to-air, but I think Ferrari's may use both. But it is unclear.

[Brian Coat]

Blackout has posted some good Ferrari & FI images/links today where you can see their respective arrangements.

[hurril]

Blackout has posted some good Ferrari & FI images/links today where you can see their respective arrangements.

Where?