Exhaust-gas turbocharger

• US 9,562,537 B2
• Filed: 04/19/2013
• Issued: 02/07/2017
• Est. Priority Date: 04/27/2012
• Status: Active Grant

• Current Assignee: BorgWarner Incorporated
• Original Assignee: BorgWarner Incorporated
• Inventors: Heidingsfelder, Leif, Kanoffsky, Nico
• Primary Examiner(s): Nguyen, Ninh H
• Application Number:
  US14/396,149
• Publication Number:
  US 20150086341A1
• Time in Patent Office: 1,390 Days
• US Class Current: 1/1
• CPC Class Codes: F01D 17/165 for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line F01D17/167 takes precedence
• CPC Class Codes: F02B 37/186 Arrangements of actuators or linkage for bypass valves
• CPC Class Codes: F02B 37/22 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 Class Codes: F02B 39/00 Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
• CPC Class Codes: F04D 17/025 comprising axial flow and radial flow stages
• CPC Class Codes: F04D 27/002 by varying geometry within the pumps, e.g. by adjusting vanes
• CPC Class Codes: F05D 2250/90 Variable geometry
• CPC Class Codes: F05D 2260/50 Kinematic linkage, i.e. transmission of position
• CPC Class Codes: F16C 7/02 Constructions of connecting-rods with constant length
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

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).

Claims

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).