Exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-9995312-B2
Application number	US-201314648058-A
Country	US
Kind code	B2
Filing date	Nov 21, 2013
Priority date	Dec 6, 2012
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

An exhaust-gas turbocharger ( 1 ) having a turbine ( 2 ) which has a turbine housing ( 3 ) and which has an exhaust-gas control device ( 4, 5 ) arranged in the turbine housing ( 2 ); and having an actuator ( 12; 12′ ) which is operatively connected to the exhaust-gas control device ( 4, 5 ) via a drive train ( 6 ), with at least one damping connecting element ( 8; 8 I ; 8 II ; 8 III ; 8 IV ; 8 V ; 8 VI ) arranged in the drive train ( 6 ).

First claim

The invention claimed is:

1. An exhaust-gas turbocharger ( 1 ) comprising:
a turbine ( 2 ) which has a turbine housing ( 3 ) and an exhaust-gas control device ( 4 , 5 ) arranged in the turbine housing ( 2 );
an actuator ( 12 ; 12 ′); and
a drive train operatively connecting the actuator ( 12 ; 12 ′) to the exhaust-gas control device ( 4 , 5 );
wherein the drive train ( 6 ) has a coupling rod ( 7 ; 7 ′) for longitudinal transmission of actuator force;
wherein at least one damping connection element ( 8 ; 8 I ; 8 II ; 8 III ; 8 IV ; 8 V ; 8 VI ) adapted to damp longitudinal transmitted gas pulsations in the drive train ( 6 ) between the exhaust-gas control device ( 4 , 5 ) and the actuator ( 12 ; 12 ′) is arranged in the coupling rod ( 7 ; 7 ′); and
wherein the at least one damping connection element ( 8 ; 8 I ; 8 II ; 8 III ; 8 IV ; 8 V ; 8 VI ) is an elastomer component.

2. The exhaust-gas turbocharger as claimed in claim 1 , wherein the at least one damping connection element ( 8 I ) is arranged in the coupling rod ( 7 ; 7 ′) and is subject to pressure loading when subjected to actuating force to damp gas pulsations in the drive train between the exhaust-gas control device and the actuator.

3. The exhaust-gas turbocharger as claimed in claim 1 , wherein the at least one damping connection element ( 8 II ) is arranged in the coupling rod ( 7 ; 7 ′) and is subject to tension loading when subjected to actuating force to damp gas pulsations in the drive train between the exhaust-gas control device and the actuator.

4. The exhaust-gas turbocharger as claimed in claim 3 , wherein the at least one damping connection element ( 8 II ) is installed in a cage ( 11 ) with turned-over lobes ( 11 A, 11 B).

5. The exhaust-gas turbocharger as claimed in claim 1 , wherein the drive train ( 6 ) has a drive lever ( 13 ) that is connected to the coupling rod ( 7 ; 7 ′).

6. The exhaust-gas turbocharger as claimed in claim 5 , wherein the at least one damping connection element is a radially acting damping connection element ( 8 III ) arranged in a receiving recess ( 14 ) of the drive lever ( 13 ).

7. The exhaust-gas turbocharger as claimed in claim 5 , wherein the at least one damping connection element is a combined axially and radially acting damping element ( 8 IV ) arranged on an underside ( 15 ) of the drive lever ( 13 ).

8. The exhaust-gas turbocharger as claimed in claim 1 , wherein the coupling rod ( 7 ) has a coupling rod end ( 23 ) on which a connecting piece ( 20 ) is arranged, wherein tire at least one damping connection element ( 8 VI ) is arranged between (he coupling rod end ( 23 ) and the connecting piece ( 20 ).

9. An exhaust-gas turbocharger ( 1 ) comprising:
a turbine ( 2 ),
which has a turbine housing ( 3 ), and
which has an exhaust-gas control device ( 4 , 5 ) arranged in the turbine housing ( 2 ); and

an actuator ( 12 ; 12 ′) which is operatively connected to the exhaust-gas control device ( 4 , 5 ) via a drive train ( 6 );
wherein at least one damping connection element ( 8 ; 8 I ; 8 II ; 8 III ; 8 IV ; 8 V ; 8 VI ) is arranged in the drive train ( 6 );
wherein the at least one damping connection element ( 8 ; 8 I ; 8 II ; 8 III ; 8 IV ; 8 V ; 8 VI ) is an elastomer component;

wherein the drive train ( 6 ) has a coupling rod ( 7 ; 7 ′);
wherein the coupling rod ( 7 ) has a coupling rod end ( 23 ) on which a connecting piece ( 20 ) is arranged;
wherein the at least one damping connection element ( 8 VI ) is arranged between the coupling rod end ( 23 ) and the connecting piece ( 20 ); and

wherein the actuator is an electric actuator ( 12 ′) which has a drive pinion ( 16 ) provided with said at least one damping connection element ( 8 V ).

Assignees

• Borgwarner Inc

Inventors

• Christmann Ralf
• Bergner Bjoern

Classifications

• F16D3/68

  the elements being made of rubber or similar material · CPC title

• F02B37/186 Primary

  Arrangements of actuators or linkage for bypass valves · CPC title

• F01D17/12

  arranged in stator parts · CPC title

• F05D2220/40

  in turbochargers · CPC title

• F02B37/00

  Engines characterised by provision of pumps driven at least for part of the time by exhaust · CPC title