CPC F02B 37/183 (2013.01) [F04D 17/10 (2013.01); F04D 27/0215 (2013.01); F04D 29/4206 (2013.01)] | 20 Claims |
1. A flap arrangement (10) for a turbine (2) of an exhaust- gas turbocharger (1), in particular for a wastegate valve of the turbine (2), having a spindle (100) for rotatably mounting the flap arrangement (10) in a turbine housing (3);
a lever arm (200) having at least one flexible portion (220), the lever arm (200) being coupled to the spindle (100); and
a flap plate (300), the flap plate (300) being coupled to the lever arm (200);
characterized in that the flap plate (300) has a flexible part (330) in a radially outer region of the flap plate (300) such that by applying a closing force to the flap arrangement (10) when the flap plate (300) is in contact with a flap seat (500) in the turbine housing (3), and when there are thermal deformations of the turbine housing (3), exhaust gas deposits and /or wear, elastic and/or plastic deformation of the flexible part (330) of the flap plate (300) can be caused to compensate for the thermal deformations of the turbine housing (3), exhaust gas deposits and/or wear by applying a moment to the at least one flexible portion (220) when the closing force is applied to the flap arrangement (10).
|