The linked promotional material calls it a supercharger:

http://www.valeo.com/en/page-transverses-gb/popin-diaporama-...

I guess the journalist (blogger?) isn't a car person (I'm not either, but I think lots of people that aren't car people know the difference).

Edit: This page is more informative:

http://www.valeo.com/en/our-activities/powertrain-systems/te...