turbo into a supercharger?
Discussion
, but im sure some one did a production car with this 
or was i just hoping 
i was sure i was not imagining it 
Heres a schematic of the intake.
follow down the page and click on "Delta S4" and then on "induction".
www.carsfromitaly.com/lancia/index.html
follow down the page and click on "Delta S4" and then on "induction".
www.carsfromitaly.com/lancia/index.html
I remember the Koenig Testarossa, final version - this had a supercharger which spooled up to 3000 rpm and then a tiny clutch disengaged it, by this time its twin turbos were already sucking great volumes of air in through the intakes and the supercharger became redundant.
Had 1000 hp if I remember - I wonder if anyones got one. Had a poster of it when I was a young one - awesome car.
Had 1000 hp if I remember - I wonder if anyones got one. Had a poster of it when I was a young one - awesome car.
man that was the exsact thing i was thinking of! great minds must think alike
what i have found from people that i have asked, and from what i know is that it is doable. and by runing the turbo into the supercharger you do away wiith all the complex valves (to allow the turbo to run and provent the charger being restrictive). the only problem that i can see is the strength of the supercharger. the housing is going to have to take a max of say 2-3bar! i dont know of any (apart from top fuel drag chargers and they are huge) that produce any where near that amount of boost on their own!
the other thing would be heat. doubling the presure (roots bloweers move a fixed voulme of air, so if the air going in is at a bar, and the blower moves twice the air the engine needs then you will get 2 bar) would equal double the temp. you could cool the air after the turbo with an intercooler and then run a chargecooler after the supercharger, but i would also want to run water injection just to make sure.
but if you could get one with a casing strong enough then it would bef work.
so picture this. 2.0 ltr engine that produces 600bhp and is more drivable than a V8! and think what could be done if you where to put one of these systems on a V8!
thanks Chris.
what i have found from people that i have asked, and from what i know is that it is doable. and by runing the turbo into the supercharger you do away wiith all the complex valves (to allow the turbo to run and provent the charger being restrictive). the only problem that i can see is the strength of the supercharger. the housing is going to have to take a max of say 2-3bar! i dont know of any (apart from top fuel drag chargers and they are huge) that produce any where near that amount of boost on their own!
the other thing would be heat. doubling the presure (roots bloweers move a fixed voulme of air, so if the air going in is at a bar, and the blower moves twice the air the engine needs then you will get 2 bar) would equal double the temp. you could cool the air after the turbo with an intercooler and then run a chargecooler after the supercharger, but i would also want to run water injection just to make sure.
but if you could get one with a casing strong enough then it would bef work.
so picture this. 2.0 ltr engine that produces 600bhp and is more drivable than a V8! and think what could be done if you where to put one of these systems on a V8!
thanks Chris.
We used to fit 710bhp Detroit Diesel 8V-92 two-stroke engines in our crash tender chassis; Vee-8 92 cubic inch per cylinder, a single blower to scavenge exhaust gases at low engine speeds and twin turbochargers to provide boost at higher speeds. We built a 4x4 RIV for an airport with a 710 engine, at 22 tonnes GVW it was very rapid; sub 25 seconds to 50mph on 475/80R20 tyres...now we use 18 litre 6-cylinder Caterpillar C18 diesels - 700bhp (or 950bhp from the twin-turbo version on our 8x8) unfortunately they sound like an old bus; the old Detroit sounded fantastic pumping at 2000rpm...
Matt
Matt
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