Wastegate flap for opening and closing a wastegate channel of a turbocharger, flap device and turbocharger

摘要

The invention relates to a wastegate flap (292) for a flap device (293) for opening and closing a wastegate channel (291) in a turbine housing (21) of a turbocharger (1). The wastegate flap (292) has a bearing surface (295) for sealingly resting on a wastegate valve seat (294) of the wastegate channel (291) and a retaining pin (51) for securing the wastegate flap (292) to a lever member (66) of the flapper device (293) , A cavity (299) is formed in the wastegate (292). The invention further relates to a flapper (293) and a turbocharger (1).