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Connor_scotland 13 January 2009 01:57 PM

Twin Turbo
 
Anyone care to explain how this works?

Was thinking about this in bed last night lol

Does one turbo kick in at low rpm an just as its drops off the other spools up.

Also are you able to run 2 dump valves an would they sound at the same time or different?

I am not planning this just wanted to know how it works.

Thanks

Connor

vindaloo 13 January 2009 02:27 PM

How long is a piece of string? LOL

If you limit it to series or compound charging of 4 cylinder engines there should typically be two goals...
Minimise spool threshold and lag by having a small primary or HP turbo.
Make more power more efficiently by having a large turbo better sized to high RPM flow requirements of the engine. In theory this means that the engine will make more power at higher revs because it should be running a higher boost more efficiently.

If you want to talk about straight sixes, V8s etc... Do a couple of serches on Google for Supras and <Partridge mode> Lexii. </Partridge mode>

J.

The rookie 13 January 2009 02:52 PM

Different ways of running twins, series parallel, sequential and combinations of the two.

The Legacy TT used one blower and then opened an exhaust valve to spool the second blower, once that was boosting it opened an inlet valve to allow the second turbo to feed the engine.

Autospeed article1
Autospeed article2


Simon

Connor_scotland 13 January 2009 03:35 PM

So the 2 turbo are boosting at the same time

Thats got to be mental fast


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