Obscene_CNN

Actually its creator calls it turbo cooling. It uses a form of refrigeration called turbo expansion. It is seriously confusing how it works when you first see it. Implementing it would be tougher than it looks because you have to match the two turbos carefully.

http://www.wdlpower.co.uk/downloads/..._TCS_Paper.pdf

I thought some here would like to see it.

SpankedYA!

Um JD needs to read that and then just post what it all means and what he thinks of it.

fork

I didn't read the whole thing but thye take the charge out of a turbo like normal, put it through an intercooler, then it goes through the exhaust side of a turbo, through an other intercooler, through the compressor of a turbo and into the intake manifold. It all about the thermo dynamics, but it seems weird to me. It needs a little more thinking than I want to do right now.

Shreik

Although I'm prolly wrong since that musta been written by some kind of engineers... But that second turbo doesn't look like it'd be able to recompress the air that is being used to drive it and achieve some kind of gain. The turbo can only output as much as is being put into it. So the air should only gain the velocity that it lost while spooling the turbo... Unless it's being run off the intertia of the turbo b/c of it's delay, but that's just gonna result in lag...

Again, I'm talkin outta my ***, and I didn't even read most of the stuff, but that's $.02

HyperactiveSloth

Actually, what they propose is running it through compressor 1, into compressor 2, through ex-turbine 2, into engine, then through ex-turbine 1. (very counterintuitive, but there's a reason)
Shreik is right about the lag, and I mean LLLAAAAAAAAAAGGGGG!¡! This system is by no means a high-performance application, but rather an efficiency increasing option for small displacemnt engines which are running at high power demand (undersized). Exactly the opposite of what most sport tuners are going for, this system would show the most benefit during cruising (but only within certain RPM ranges), rather than during accelleration.
Their proposal of integrating an electric motor into the turbo-expander (turbo 2), which they mention merely as a side-thought actually shows the most promise in this whole system. By doing so with the proper control sytems you could concievably reduce lag time to below that of a standard turbo. That, however would require just the right control systems AND depend on the engine type. As is true of this entinre proposal, this system would show benefits only for certain applications, namely squeezing the last bits of torque out of an undersized engine without totally losing feul economy.
Of course, whether or not any of this system would really be worth it can only be accurately judged by one thing...TESTING :

jinxy

the boost is madeup for by increesed work from the first turbo. The charge ai would be just about ambient since its coming from a constantly cool compressor. I made a post about this a lonnnnng time ago without even seeing this article and everyone told me it was wrong. But its kindove a waste of time and would add about an extra 100 pounds to the engine bay. The lag and clutter of the engine bay wouldnt be worth the net gain from this system.

stillnoturbo

Isn't it like somewhat of a seq. setup? It's late and I'm really tired and retarded. :1

jinxy

its powering a turbo with compressed air from a turbo atached to the exaust side and running a downpipe from the turbo running compressed air back to the compressor side of its self. a nasty orgy.

kamilk69

sequential twin turbo has a shaft running throught both turbos. little turbo helps sping bigger turbo.

Shreik

It's like giving yourself a BJ... Sounds good in theory, but do u really wanna be tastin your own dick?