What about a supercharger

[fourwheelininajeep]

I dont know anything about superchargers except top fuel dragster build boost in the 100 and something I believe, If a supercharger builds that much whay hasnt somebody tried to supercharger our beasts, you get immediate boost with a smooth power curve like a gasoline but still be able to build some serious torque at the high end, just a suggestion. I imagine that fuel economy would be a heck of a lot better, no spool up time so no wasted fuel trying to get the turbo to spool. I may be opening a can of worms, like I said I dont know nothing about superchargers, but the other Idea I had was a supercharger before the turbocharger to get it spinning like twin turbos but with a supercharger would build boost from 0 to 20 pounds then the turbo would take over and boost the 50 or more whatever you want, be honest I can take it if I am trying to fit ten pounds of fertilizer in a 1 pound bag tell me and explain why, but maybe nobody has thought of this yet

[seeker1056]

superchargers do not make 100 psi boost
Yes its been done, and yes several more are working on it with little success so far - or at least nothin they will publish

[PToombs]

They look really cool sitting on the intake though!

[cummins king]

and there very expensive

[gear jammer 91"]

Super chargers originated on diesel's, and a lot of old Detroit's were super charged and turbo charged, but I think that might just have been on their two stroke diesel's. I think turbo's are more efficient for our application's but I have absolutly no facts or info to back that up with.

[cummins king]

mazda and detrot diesel both had supers on there motors didnt go so well, but the locomotives and big boats have them, the problem is supers make most of there power at 4000rpm and more, also a super uses 10 to 15% of the engeins power, turbos are the most efficient way of powering a vehile, it doesnt rob any power from the motor

[BC847]

FWIW: most of the originally intended diesel applications of the roots type blower was as a scavenger ~ meaning it's located on the exhaust side of the cylinder, sucking the exhaust out (2 stroke app).

Don't quote me.

[cummins king]

sounds right

[2muchtq]

Piers had a setup with a charger that was force fed by a turbo.



It ran... but I do not know the current status on it.

[BC847]

Here's what appears to be a set of turbos with a Whipple supercharger between the two.





Odd IMO. Bear in mind a Whipple is not a positive displacement compressor as the Roots. It's belt driven turbine type compressor. Sorta a combination of both advantages of the multistage turbocharger (perhaps less super-heating) and blower (direct drive).

[cummins king]

i bet they spent a pretty penie on that

[PToombs]

FWIW: most of the originally intended diesel applications of the roots type blower was as a scavenger ~ meaning it's located on the exhaust side of the cylinder, sucking the exhaust out (2 stroke app).

Don't quote me.

Right and wrong. It is used as a scavenger, but it blows the exhaust out by pressurizing the intake. On a DD anyways.

[Rug_Trucker]

I rode in a 51ft boat once that had a pair of Detroit 8V92TTA's 820+HP twin turbos blowing into an 8-V92 blower.

It also had intercoolers.

[PToombs]

And you had to wear earmuffs on the other side of the ocean!

[89silverbullet]

i worked on a old dozer that had detroit with a super charger. hadnt ran for thirty years! 2 days of work we fired it up, come to find oout the governer was bad. it went in to run away and the 30 year old belt and everything rand to at least 7000 rpms it was just the loudest whine I have ever heard and we had to kill it by plugging the fuel.


If i ever get rid of my cummins it is for a 2-stroke detroit. when they run there is nothing stoping them