Supercharger vs. Turbo (or simply NA advice..)

[Zenmervolt]

Originally posted by: ElFenix

Originally posted by: Zenmervolt

Originally posted by: ElFenix
how much different can a belt driven centrifugal compressor be from an exhaust driven centrifugal compressor in terms of power output?

There's a small percentage of parasitic drag from the drive belt, but the compressor mechanism is essentially identically efficient.

ZV

doesn't the increased exhaust pressure from the impeller do something?

Not nearly as much as one might think. The increase in backpressure is minimal at most and the majority of the energy used to drive a turbocharger is actually heat energy from the exhaust that's there anyway. The drag from a supercharger is much greater.

ZV

 

[Howard]

A centrifugal supercharger is pretty much the worst of both worlds, hehe

 

[Zenmervolt]

Originally posted by: Howard
A centrifugal supercharger is pretty much the worst of both worlds, hehe

Depends on how you measure it. It does have the benefit of better economy than a positive-displacement supercharger since it's not providing full boost all the time, and has the more efficient compression of a turbocharger which means lower inlet temps and less wear on the engine than a positive displacement blower. This is also one of the easier supercharger types to "bolt on" to an engine.

But you also lose the immediate low-rpm punch that a positive displacement blower gives and you still have the parasitic drag from the drive belt and gearing system.

Every option is a trade off, it just depends on what your goals are. 🙂

ZV

 

[alkemyst]

intensive purposes ftw for the lamen 😕 🙂