Exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-10119549-B2
Application number	US-201314406324-A
Country	US
Kind code	B2
Filing date	Jun 14, 2013
Priority date	Jun 21, 2012
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

An exhaust-gas turbocharger ( 1 ) with a turbine housing ( 2 ) which has a turbine housing inlet ( 8 ) and a turbine housing outlet ( 9 ) for exhaust gas, and which has a wastegate duct ( 19 ) between the turbine housing inlet ( 8 ) and the turbine housing outlet ( 9 ), and a flap arrangement ( 10 ) having a pivotable flap plate for opening and closing the wastegate duct ( 19 ), wherein the flap plate is in the form of an elastic spring disk ( 11 ).

First claim

The invention claimed is:

1. An exhaust-gas turbocharger ( 1 ) comprising:
a turbine housing ( 2 )
which has a turbine housing inlet ( 8 ) and a turbine housing outlet ( 9 ) for exhaust gas, and
which has a wastegate duct ( 19 ) between the turbine housing inlet ( 8 ) and the turbine housing outlet ( 9 ), and
a flap arrangement ( 10 ) having a pivotable flap plate for opening and closing the wastegate duct ( 19 ),
wherein
the flap plate is an elastic spring disk ( 11 ),
the flap arrangement ( 10 ) comprises a flap shaft ( 13 ) rotatably mounted in the turbine housing ( 2 ) and comprises a lever ( 12 ), wherein the lever ( 12 ) connects the spring disk ( 11 ) to the flap shaft ( 13 ) in a rotationally conjoint manner, and
the spring disk ( 11 ) comprises a recess, and the lever ( 12 ) is connected to the spring disk ( 11 ) by means of a pin ( 16 ) which projects through the recess.

2. The exhaust-gas turbocharger as claimed in claim 1 , wherein the spring disk ( 11 ) is arranged so as to make direct sealing contact with the turbine housing ( 2 ) when the flap arrangement ( 10 ) is in the closed state.

3. The exhaust-gas turbocharger as claimed in claim 1 , wherein the flap shaft ( 13 ) is manufactured in one piece with the lever ( 12 ), or wherein the flap shaft ( 13 ) is welded to the lever ( 12 ).

4. The exhaust-gas turbocharger as claimed in claim 1 , wherein the spring disk ( 11 ) bears directly against the lever ( 12 ).

5. The exhaust-gas turbocharger as claimed in claim 1 , wherein an annular, outer portion of the spring disk ( 11 ) is formed as a sealing surface.

6. The exhaust-gas turbocharger as claimed in claim 5 , wherein the sealing surface is a bead ( 18 ).

7. The exhaust-gas turbocharger as claimed in claim 5 , wherein the sealing surface is bent forward toward the wastegate duct ( 19 ).

8. The exhaust-gas turbocharger as claimed in claim 1 , wherein the spring disk ( 11 ) is manufactured from spring steel.

Assignees

• Borgwarner Inc

Inventors

• Tschirschke Juergen

Classifications

• F02B37/186

  Arrangements of actuators or linkage for bypass valves · CPC title

• F05D2220/40

  in turbochargers · CPC title

• F01D25/24

  Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title

• F02B37/183

  Arrangements of bypass valves or actuators therefor · CPC title

• F01D17/105 Primary

  by passing part of the fluid · CPC title