Air flap system having magnet spring

A throttle valve (ThV) element linked to a ThV shaft (4) in a ThV casing (1) adjusts with a reset device (RD) (3) through an adjusting movement (G). Two magnet elements (MEs) in the RD oppose each other with equal magnetic poles (N,S) and move towards each other. Another RD forms a homopolar magnetic reset movement device with two MEs with equal magnetic poles rotating towards each other.