Post-Turbo exhaust design

[Holm86]

I think FIA should look at water injection and legalise it. Perhaps for 2015. If it can increase efficiency it would be a very cheap way to do it. And it doesn't compromise safety in any way.

It would only need a small watertank, a pump and some injectors. Preferably the regulations should allow injection of water after the turbine. As droplets can grind and damage the fast spinning blades. And preferably as close to the inlet trumpets as possible. So water dosen't just build up on pipe surfaces etc.

I don't know if it should only be legal to inject water at WOT. The FIA should deside this. Otherwise it could be used along with cold blowing when off throttle to drive the turbine via steam effect.

And please remember this is just my whish to the FIA. It has nothing to do with current regulations or future regulation changes.

[dren]

You'd want the water->steam expansion pre turbine, right?

[Holm86]

Yes. But the steam process hapens in the combustion chamber or exhaust. I just want the injection point to be after the compressor inlet.

[Holm86]

Just stumbled upon this video. There is much good info from what we have been talking about in this thread.

[youtube]http://www.youtube.com/watch?v=skuIkE93TR8[/youtube]

[aussiegman]

+1 for you...I had seen this previously but could not find it. As said in the video, size and complexity is an issue for these Rankine-type systems...

I think FIA should look at water injection and legalise it. Perhaps for 2015. If it can increase efficiency it would be a very cheap way to do it. And it doesn't compromise safety in any way.

I agree it should be legalised and some specifications put around it use and the "water" available. Last thign you'd want is the teams using "additives" in the water such as alcohol etc.

It would only need a small watertank, a pump and some injectors.

Cheap and easy to use and regulate I would think so no huge $$$$ impact for teams. Also simple to include in the regulations.

Allow 1 injector pre inlet valve post turbine at XXmm from the valve face.
System must run at a maximum of XXpsi and flow must not exceed XXXml/m
Only purified/distilled water allowed for injection (FIA sampling)
Maximum capacity of water storage is XXXLts

If you wanted to you could allow its use only above 10,500RPM etc.

Preferably the regulations should allow injection of water after the turbine. As droplets can grind and damage the fast spinning blades. And preferably as close to the inlet trumpets as possible. So water dosen't just build up on pipe surfaces etc.

I've seen the result of an expensive H2O system setup pre-turbo running to low a pressure so the water did not atomise properly. The compressor was destroyed very quickly

I don't know if it should only be legal to inject water at WOT. The FIA should deside this. Otherwise it could be used along with cold blowing when off throttle to drive the turbine via steam effect.

And please remember this is just my whish to the FIA. It has nothing to do with current regulations or future regulation changes.

No idea. Pre or post turbine, WOT or above 10,500rpm. This is all more to do with what they want to promote or prevent.

Either way , I hate that the FIA has cut out a simple and effective system for the power systems that could increase longevity and performance that is cheap, mature and effective.