Exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-9562537-B2
Application number	US-201314396149-A
Country	US
Kind code	B2
Filing date	Apr 19, 2013
Priority date	Apr 27, 2012
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

An exhaust-gas turbocharger ( 1 ) having a turbine ( 2 ) which is provided with a variable turbine geometry and/or with a wastegate; and having an actuator ( 6 ) which is connected to the variable turbine geometry and/or to the wastegate by means of a coupling rod ( 9 ) composed of plastic. The coupling rod ( 9 ) is connected, at its end regions, by means of a first eyelet ( 8 ) at one side to a pin ( 7 ) of the actuator ( 6 ) and by means of a second eyelet ( 12 ) at the other side to a pin ( 11 ) of an adjusting lever ( 10 ) of the variable turbine geometry and/or of the wastegate. The eyelets ( 8, 12 ) of the coupling rod ( 9 ) are provided with in each case one metal sleeve ( 13 and 14 respectively).

First claim

The invention claimed is:

1. An exhaust-gas turbocharger ( 1 ) having
a turbine ( 2 ) which is provided with a variable turbine geometry and/or with a wastegate; and
an actuator ( 6 ) which is connected to the variable turbine geometry and/or to the wastegate by means of a coupling rod ( 9 ) composed of plastic, wherein the coupling rod ( 9 ) is connected, at its end regions, by means of a first eyelet ( 8 ) at one end to a pin ( 7 ) of the actuator ( 6 ) and by means of a second eyelet ( 12 ) at the other end to a pin ( 11 ) of an adjusting lever ( 10 ) of the variable turbine geometry and/or of the wastegate,
wherein
the eyelets ( 8 , 12 ) of the coupling rod ( 9 ) are provided with in each case one metal sleeve ( 13 and 14 respectively).

2. The exhaust-gas turbocharger as claimed in claim 1 , wherein the metal sleeves ( 13 , 14 ) are cast at the edge into the plastics material of the coupling rod ( 9 ) by a process of encapsulation by injection molding.

3. The exhaust-gas turbocharger as claimed in claim 1 , wherein the coupling rod ( 9 ) is of rectilinear design.

4. The exhaust-gas turbocharger as claimed in claim 1 , wherein the coupling rod ( 9 ) is of crank design.

5. The exhaust-gas turbocharger as claimed in claim 1 , wherein the pins ( 7 , 11 ) are fixed in the eyelets ( 8 , 12 ) of the coupling rod ( 9 ) by means of lock washers ( 15 and 16 respectively).

6. The exhaust-gas turbocharger as claimed in claim 1 , wherein one end region of the coupling rod ( 9 ) is connected to an electric actuator.

7. The exhaust-gas turbocharger as claimed in claim 1 , wherein the coupling rod ( 9 ) is a control rod of a pneumatic actuator.

8. A coupling rod ( 9 ) of an exhaust-gas turbocharger ( 1 ) made from a plastic material, having two end regions which are spaced apart from one another and in which eyelets ( 8 and 12 ) are formed, wherein the eyelets ( 8 , 12 ) are provided with in each case one metal sleeve ( 13 and 14 ); wherein one of the eyelets is configured to engage with a pin of an actuator and the other of the eyelets is configured to engage with a pin of an adjusting lever.

9. The coupling rod as claimed in claim 8 , wherein the metal sleeves ( 13 , 14 ) are cast at the edge into the plastics material of the coupling rod ( 9 ) by a process of encapsulation by injection molding.

10. The coupling rod as claimed in claim 8 , wherein the coupling rod ( 9 ) is of rectilinear design.

11. The coupling rod as claimed in claim 8 , wherein the coupling rod ( 9 ) is of crank design.

12. The coupling rod as claimed in claim 8 , wherein the pins ( 7 , 11 ) are fixed in the eyelets ( 8 , 12 ) of the coupling rod ( 9 ) by means of lock washers ( 15 and 16 respectively).

13. The coupling rod as claimed in claim 8 , wherein one end region of the coupling rod ( 9 ) is connected to an electric actuator.

14. The coupling rod as claimed in claim 8 , wherein the coupling rod ( 9 ) is a control rod of a pneumatic actuator.

15. The coupling rod as claimed in claim 8 , having two end regions which are spaced apart from one another and in which eyelets ( 8 and 12 ) are formed, wherein the eyelets ( 8 , 12 ) are provided with in each case one metal sleeve ( 13 and 14 ).

Assignees

• Borgwarner Inc

Inventors

• Heidingsfelder Leif
• Kanoffsky Nico

Classifications

• F04D17/025

  comprising axial flow and radial flow stages · CPC title

• F02B37/22

  by varying cross-section of exhaust passages or air passages {, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits} (F02B37/24 takes precedence) · CPC title

• F04D27/002 Primary

  by varying geometry within the pumps, e.g. by adjusting vanes · CPC title

• F01D17/165

  for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line (F01D17/167 takes precedence) · CPC title

• F05D2250/90

  Variable geometry · CPC title