US 11,781,472 B2
Flap arrangement for a turbine of an exhaust-gas turbocharger
Marcel Golz, Neckarsteinach (DE); Jason Robert Walkingshaw, Heidelberg (DE); Jens Watanpour, Viernheim (DE); and Anna Gilbert, Mannheim (DE)
Assigned to BorgWarner Inc., Auburn Hills, MI (US)
Filed by BorgWarner Inc., Auburn Hills, MI (US)
Filed on Feb. 1, 2022, as Appl. No. 17/590,645.
Application 17/590,645 is a continuation of application No. 16/701,286, filed on Dec. 3, 2019, granted, now 11,236,666, issued on Feb. 1, 2022.
Claims priority of application No. 102018220965.0 (DE), filed on Dec. 4, 2018.
Prior Publication US 2022/0154631 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F02B 37/18 (2006.01); F04D 17/10 (2006.01); F04D 27/02 (2006.01); F04D 29/42 (2006.01)
CPC F02B 37/183 (2013.01) [F04D 17/10 (2013.01); F04D 27/0215 (2013.01); F04D 29/4206 (2013.01)] 20 Claims
OG exemplary drawing
 
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).