Re: what??? (yello90g60)
First two are pics of the Ecodyno (G50) charger being developed by the company SIG-Automotiv in Neuhausen, Switzerland.
It appear that is uses an electro magnetic clutch on the pulley so you can disengage it, and has an overboost opportunity.
The two lower images are pics of a G60 charger that someone has tried to rivet together after it has grenaded.