Regulating flap arrangement of an exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-9835042-B2
Application number	US-201314398138-A
Country	US
Kind code	B2
Filing date	Apr 29, 2013
Priority date	May 11, 2012
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A regulating flap arrangement ( 1 ) of an exhaust-gas turbocharger ( 3 ) having a flap shaft ( 5 ), which is guided by means of a bushing ( 10 ) in the turbine housing ( 2 ). A shaped sealing ring ( 13 ), as viewed in cross section, has at least one cavity ( 14 ). The shaped sealing ring ( 13 ) bears simultaneously against the first sealing surface ( 11 ) and against the second sealing surface ( 12 ), and in order to impart its sealing action, is compressed and deformed in the axial direction ( 15 ) of the flap shaft ( 5 ).

First claim

The invention claimed is:

1. A regulating flap arrangement ( 1 ) of an exhaust-gas turbocharger ( 3 ) provided with a turbine housing ( 2 ),
having a flap plate ( 4 ), and
having a flap shaft ( 5 ),
which is connected via an outer flap lever ( 6 ) to a regulating rod ( 7 ) of a drive ( 8 ),
which is connected via an inner flap shaft lever ( 9 ) to the flap plate ( 4 ), and
which is guided by means of a bushing ( 10 ) in the turbine housing ( 2 ), the bushing having
a first sealing surface ( 11 ) on a face-side end of the bushing ( 10 ),
a second sealing surface ( 12 ), which is situated opposite the first sealing surface ( 11 ), on the outer flap lever ( 6 ) or the inner flap shaft lever ( 9 ), and further comprising
a shaped compression sealing ring ( 13 ) formed from a single bent sheet which, as viewed in cross section, has at least one cavity ( 14 ), wherein the shaped sealing ring ( 13 ) bears simultaneously with sliding contact against the first sealing surface ( 11 ) and with sliding contact against the second sealing surface ( 12 ), and wherein the shaped sealing ring ( 13 ), in order to impart its sealing action, is compressed and deformed in the axial direction ( 15 ) of the flap shaft ( 5 )
wherein a groove ( 19 ) which is outwardly open in the axial direction ( 15 ) and which serves for receiving the shaped sealing ring ( 13 ) is formed in the bushing ( 10 ).

2. The regulating flap arrangement as claimed in claim 1 , wherein the shaped sealing ring ( 13 ) is, by means of two legs ( 17 , 18 ) which are non-parallel with respect to one another, of V-shaped form as viewed in cross section, wherein the shaped sealing ring ( 13 ) bears only with the free ends of the legs ( 17 , 18 ) against the first and second sealing surfaces ( 11 , 12 ).

3. The regulating flap arrangement as claimed in claim 1 , wherein the shaped sealing ring ( 13 ) is S-shaped as viewed in cross section.

4. The regulating flap arrangement as claimed in claim 1 , wherein the first sealing surface ( 11 ) is arranged parallel to the second sealing surface ( 12 ).

5. The regulating flap arrangement as claimed in claim 1 , wherein the shaped sealing ring ( 13 ) is composed of metal.

Assignees

• Borgwarner Inc

Inventors

• Mack Sebastian

Classifications

• F02B37/186

  Arrangements of actuators or linkage for bypass valves · CPC title

• F05D2240/55

  Seals · CPC title

• F05D2250/75

  given by its similarity to a letter, e.g. T-shaped · CPC title

• F05D2220/40

  in turbochargers · CPC title

• F01D17/105 Primary

  by passing part of the fluid · CPC title