On Turbotech's recuperative engine, here shown in its range extender variant with a generator, the heat exchanger is the large cylinder on the right: Turbotech
LYON, France—Turbotech, a startup company created by four former Safran engineers, is developing a 73 kW (98 shp) turboprop featuring a recuperative architecture, thus combining the lightness of a turbine engine with the fuel efficiency of a piston ...