Red Bull Power Unit Hardware & Software

[Vappy]

What I would like to know is whether or not the intercooler is inside the V. In theory you would do this to reduce the turbo lag. You want the shortest distance possible between the compressor outlet and the cylinder intake port. Therefore I cannot imagine that Red Bull would keep the sidepod mounted intercoolers from last season.

As sidepods are very useful for managing air flow and front tyre wake, or at least keeping it away from certain areas as much as possible, it's a space that's worth making use of. The intercooler is particularly large and I would struggle to think how that would fit, while accomodating the air intake.

[BassVirolla]

What I would like to know is whether or not the intercooler is inside the V. In theory you would do this to reduce the turbo lag. You want the shortest distance possible between the compressor outlet and the cylinder intake port. Therefore I cannot imagine that Red Bull would keep the sidepod mounted intercoolers from last season.

Turbo lag is nearly not affected by intake plenum / piping volume, but the inertia of the rotating components of the turbo.

A 1.6 engine at 11.000 rpm ingests 146,7 litres of air per second (at whatever boost you can or want put it). Not a big problem to have 10 or 20 litres of piping to fill.

While the engine stays above turbo threshold rpms (minimum rpm at which the turbo generates a positive feedback of air flow into and out of the engine) intake volume is a minor contributor to lag (being lag the time lapse between stepping on the throttle and getting the full achievable torque at current rpms).

[Hoffman900]

What I would like to know is whether or not the intercooler is inside the V. In theory you would do this to reduce the turbo lag. You want the shortest distance possible between the compressor outlet and the cylinder intake port. Therefore I cannot imagine that Red Bull would keep the sidepod mounted intercoolers from last season.

Turbo lag is nearly not affected by intake plenum / piping volume, but the inertia of the rotating components of the turbo.

A 1.6 engine at 11.000 rpm ingests 146,7 litres of air per second (at whatever boost you can or want put it). Not a big problem to have 10 or 20 litres of piping to fill.

While the engine stays above turbo threshold rpms (minimum rpm at which the turbo generates a positive feedback of air flow into and out of the engine) intake volume is a minor contributor to lag (being lag the time lapse between stepping on the throttle and getting the full achievable torque at current rpms).

This. RPM sweep rate is likely over 2000rpm/s in lower gears. Then the whole thing has to change near instaniously at shift recovery.

Acceleration isn’t a straight line. Should be easy for people with data to figure out.

[BassVirolla]

What I would like to know is whether or not the intercooler is inside the V. In theory you would do this to reduce the turbo lag. You want the shortest distance possible between the compressor outlet and the cylinder intake port. Therefore I cannot imagine that Red Bull would keep the sidepod mounted intercoolers from last season.

Turbo lag is nearly not affected by intake plenum / piping volume, but the inertia of the rotating components of the turbo.

A 1.6 engine at 11.000 rpm ingests 146,7 litres of air per second (at whatever boost you can or want put it). Not a big problem to have 10 or 20 litres of piping to fill.

While the engine stays above turbo threshold rpms (minimum rpm at which the turbo generates a positive feedback of air flow into and out of the engine) intake volume is a minor contributor to lag (being lag the time lapse between stepping on the throttle and getting the full achievable torque at current rpms).

This. RPM sweep rate is likely over 2000rpm/s in lower gears. Then the whole thing has to change near instaniously at shift recovery.

Acceleration isn’t a straight line. Should be easy for people with data to figure out.

I'm sorry, but I'm not catching your point at all. What has to change? What do you mean by shift recovery?

Are you thinking that lag will or will not be important? What about turbo threshold?

Seriously, I feel so sorry, but I don't understand a thing, nor why you quoted me (possibly because I'm not fluent in english language / culture and there is something implicit that is flying over my head).

[Badger]

First sounds of the RBPT-Ford.

[FW17]

engine sounds better than all the other engines we have heard. Louder too.

[AR3-GP]

I must be the only one who can't detect any difference in sound between this year and last year.

[Emag]

I must be the only one who can't detect any difference in sound between this year and last year.

I don't notice any big difference either. As a whole, the power unit might be a little more "hissy" at the higher end due to more battery deployment (similar to what the LMP cars sound while building up speed), but the ICE sounds pretty much the same as it did before.

[lio007]

This does not sound very smooth:

[Vappy]

When Honda came out with their engine with McLaren, it sounded very much like that, even up to higher revs. It almost sounded like the turbine was off centre, and it's a similar sound in that video. If I find an example of this, i'll edit this post

[lio007]

When Honda came out with their engine with McLaren, it sounded very much like that, even up to higher revs. It almost sounded like the turbine was off centre, and it's a similar sound in that video. If I find an example of this, i'll edit this post

I know...all but healthy.

[AR3-GP]

This does not sound very smooth:
https://twitter.com/i/status/2013615304404824343

There are other videos

[Vappy]

When Honda came out with their engine with McLaren, it sounded very much like that, even up to higher revs. It almost sounded like the turbine was off centre, and it's a similar sound in that video. If I find an example of this, i'll edit this post

I know...all but healthy.

Agreed, and the above video does sound particularly rough. It's reasonable to assume they weren't running anything particularly punchy for the above video, which looked like a simple outlap and back to the pits. Once it was up to speed I didn't hear any misfire or hesitation.

Happily, the racing bulls have done testing as recent as last year at this track, so i'll look at some comparisons tomorrow between this video and that one.

[GhostF1]

This does not sound very smooth:
https://twitter.com/i/status/2013615304404824343

There are other videos

It sounds extremely unwell. Very reminiscent of the 2015 Honda when it was spitting the dummy. The same sputtering and definite misfires going on there when it shouldn't be. Hopefully all software related!



Striking resemblance to Jerez 2015 ^

[ME4ME]

What I would like to know is whether or not the intercooler is inside the V. In theory you would do this to reduce the turbo lag. You want the shortest distance possible between the compressor outlet and the cylinder intake port. Therefore I cannot imagine that Red Bull would keep the sidepod mounted intercoolers from last season.

Now that we've seen the VCARBs airbox it's indeed likely that they've put the intercooler inside the v or at least above the engine.