Mercedes F1 split turbo explained...

[wleehendrick]

OK, not something any of us are likely to put on an 818 (unless Wayne comes up with a VCP split turbo kit :p ), but cool technology I thought would be appreciated here...


https://www.youtube.com/watch?v=NuBB2F6IutQ

[WIS89]

Pretty cool idea. I would be curious to hear about the overall HP increase.

The turbo lag reduction should be huge.

Thanks for sharing.

Regards,

Steve

[AZPete]

Very clear explanation why Mercedes has been so dominant this season. Thanks!

[Frank818]

I should never have watched this video. Now I have to find a way to do that on my 818.
What budget... 100k, 500k? Bring it on.

[TahoeTim]

uh, change to k to an m and you would be getting close. 100 million is more like it

[Mike N]

Sounds simple but is absolutely not when you consider that the turbo is running up to 120,000 rpm. I would love to know the details of the design of the shaft connecting the turbine to the compressor. Minimizing the rotational inertia, tuning the torsional stiffness / damping and the balancing of that shaft must have been incredibly challenging. Get one thing just slightly wrong and the shaft would come apart in a heartbeat.

[shinn497]

I can't help but think that this wouldn't result in much more noticable gains on a street car. But that is me.

[Jaime]

F1 is a game of inches. What is considered a head-and-shoulders above the competition advantage there would be barely noticeable on an average street car. An air-to-water intercooler solves the turbo lag problem as well as the split turbo solution, it's just a few pounds heavier and possibly against F1 rules. Moving a 75 pound gearbox six inches toward the center of the car has the same effect on mass-centralization as having the driver and passenger slide their seats all the way back in a street car.

I'm not saying it doesn't help them. I'm saying that in a race series where everyone is getting 99% out of what is allowed under the rules, getting half of that remaining 1% is huge. On the street, there is no ceiling, so we can just throw a few thousand dollars at a car and make it go faster.

[Blitzkrieg]

You would have the use the same bearing layout in jet turbine engines I would think. The big factor would be the shaft expansion and contraction. As for the shaft, high temp carbon fiber wouldbe the answer. It would be stronger, lighter, and more flexibal to a point. But in a street car you could just supercharge and turbocharge your car. Have the supercharger for low rpm then turbo kick in for high rpm and have a clutch on the super charger and a valve on the turbo.