Quote:
Originally Posted by oldman
Nice
I had a whip pile before which is a Lysholm so a screw. These new twisted Eatons are looking more like a Lysholm do they still behave like a roots or are the in between a trans blower?
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Even being twisted, the TVS are still a traditional roots. Roots SC normally have mirror image rotor which inherently creates large leakpath in the outlet side of the rotor set refered to as a "blowhole" which prevents compression. The improvements in the TVS supercharger compared to the previous Eaton designs are based around the inlet side of the SC. Since it is an axially fed SC, the focus was based on the filling event of the control volumes in the SC (8 volumes in the case of a TVS). The rotor twist was altered to optimize these events resulting in the reduced power consumption and increased compressor efficiency.
To realize internal compression (like a screw) you need inter-meshing male and female rotors spinning different speeds (5/3, 6/4, etc). Theoretically internal compression makes them more efficient. Real World? That might be another story... manufacturing process has it's pitfalls and impact on performance.