Control arrangement of an exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-10066540-B2
Application number	US-201414784630-A
Country	US
Kind code	B2
Filing date	Apr 22, 2014
Priority date	Apr 30, 2013
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A control arrangement (1) of an exhaust-gas turbocharger having a bearing bushing (3); a control shaft (4) which is connected at a first end (5) to a first adjustment lever (6) and which is guided in the bearing bushing (3); and a second adjustment lever (9) which is connected to a second end (8) of the control shaft (4) and which, on a free end region (10), bears a control device (11), wherein the free end region (10) is designed to be cranked in the direction of the first adjustment lever (6).

First claim

The invention claimed is:

1. A control arrangement ( 1 ) of an exhaust-gas turbocharger, having
a bearing bushing ( 3 );
a control shaft ( 4 ) which is connected at a first end ( 5 ) to a first adjustment lever ( 6 ) and which is guided in the bearing bushing ( 3 ); and
a second adjustment lever ( 9 ) which is connected to a second end ( 8 ) of the control shaft ( 4 ) and which, on a free end region ( 10 ), bears a control device ( 11 ),
wherein
the free end region ( 10 ) is cranked towards the first adjustment lever ( 6 ),
a central point (M) of the control device ( 11 ) is axially offset with respect to a second end region ( 15 B) of the bearing bushing ( 3 ) by an offset (d-c),
the bearing bushing ( 3 ) extends axially over a dimension (b) and
the offset (d-c) to the dimension (b) is a ratio of 0.1 to 0.6.

2. The control arrangement as claimed in claim 1 , wherein the free end region ( 10 ) has a bend section ( 12 ) and a holding section ( 13 ) adjoining said bend section, the holding section having a holding section free end ( 14 ), wherein the control device ( 11 ) is arranged on the holding section free end ( 14 ).

3. The control arrangement as claimed in claim 1 , wherein the control device ( 11 ) is a wastegate flap.

4. The control arrangement as claimed in claim 1 , wherein a connecting piece ( 7 ) is arranged on a surface ( 16 ), which points toward the bearing bushing ( 3 ), of the first adjustment lever ( 6 ).

5. The control arrangement as claimed in claim 1 , wherein the first adjustment lever ( 6 ) extends in a first direction (R 1 ) and wherein the second adjustment lever ( 9 ) extends in a second direction (R 2 ), wherein the first and second directions (R 1 ; R 2 ) are offset relative to one another by 165° to 195°.

6. A turbine housing ( 17 ) of an exhaust-gas turbocharger ( 2 )
having the control arrangement ( 1 ) according to claim 1 .

7. The turbine housing as claimed in claim 6 , wherein the free end region ( 10 ) has a bend section ( 12 ) and a holding section ( 13 ) adjoining said bend section, the holding section having a holding section free end ( 14 ), wherein the control device ( 11 ) is arranged on the holding section free end ( 14 ).

8. The turbine housing as claimed in claim 6 , wherein the control device ( 11 ) is a wastegate flap.

9. The turbine housing as claimed in claim 6 , wherein the offset (d-c) to the dimension (b) is a ratio of 0.45 to 0.55.

10. The turbine housing as claimed in claim 6 , wherein a connecting piece ( 7 ) is arranged on a surface ( 16 ), which points toward the bearing bushing ( 3 ), of the first adjustment lever ( 6 ).

11. The turbine housing as claimed in claim 6 , wherein the first adjustment lever ( 6 ) extends in a first direction (R 1 ) and wherein the second adjustment lever ( 9 ) extends in a second direction (R 2 ), wherein the first and second directions (R 1 ; R 2 ) are offset relative to one another by 165° to 195°.

12. The control arrangement as claimed in claim 1 , wherein the offset (d-c) to the dimension (b) is a ratio of 0.45 to 0.55.

13. The control arrangement as claimed in claim 1 , wherein the first adjustment lever ( 6 ) extends in a first direction (R 1 ) and wherein the second adjustment lever ( 9 ) extends in a second direction (R 2 ), wherein the first and second directions (R 1 ; R 2 ) are offset relative to one another by 170° to 190°.

14. The control arrangement as claimed in claim 1 , wherein the first adjustment lever ( 6 ) extends in a first direction (R 1 ) and wherein the second adjustment lever ( 9 ) extends in a second direction (R 2 ), wherein the first and second directions (R 1 ; R 2 ) are offset relative to one another by 175° to 185°.

15. A control arrangement ( 1 ) of an exhaust-gas turbocharger, having
a bearing bushing ( 3 );
a control shaft ( 4 ) which is connected at a first end ( 5 ) to a first adjustment lever ( 6 ) and which is guided in the bearing bushing ( 3 ); and
a second adjustment lever ( 9 ) which is connected to a second end ( 8 ) of the control shaft ( 4 ) and which, on a free end region ( 10 ), bears a control device ( 11 ),
wherein
the free end region ( 10 ) is cranked towards the first adjustment lever ( 6 ), and
a control arrangement geometry is defined by the relationship:
0.9≤ a /( La/Li ·( b/ 2+( c−d ))− b/ 2)≤1.1

where the components in said relationship represent the following:
a: spacing between a first end region ( 15 A), which faces toward the first adjustment lever ( 6 ), of the bearing bushing ( 3 ) and an engagement point (A) of the first adjustment lever ( 6 );
La: effective length of the first adjustment lever ( 6 );
Li: effective length of the second adjustment lever ( 9 );
b: spacing between the first end region ( 15 A) and a second end region ( 15 B), which faces toward the second adjustment lever ( 9 ), of the bearing bushing ( 3 ); and
c: spacing between the second end region ( 15 B) and a longitudinal central line (L 9 ) of the second adjustment lever ( 9 );
d: spacing between the second end region ( 15 B) and a force introduction point (M) at which the control device ( 11 ) is arranged.

16. A turbine housing ( 17 ) of an exhaust-gas turbocharger ( 2 )
having a control device ( 11 ) which is operatively connected to a control arrangement ( 1 ) which has the following components:
a bearing bushing ( 3 );
a control shaft ( 4 ) which is connected at a first end ( 5 ) to a first adjustment lever ( 6 ) and which is guided in the bearing bushing ( 3 ); and
a second adjustment lever ( 9 ) which is connected to a second end ( 8 ) of the control shaft ( 4 ) and which, on a free end region ( 10 ), bears the control device ( 11 ),
wherein
the free end region ( 10 ) is cranked towards the first adjustment lever ( 6 ), and
a control arrangement geometry is defined by the relationship:
0.9≤ a /( La/Li ·( b 2+( c−d ))− b/ 2)≤1.1

where the components in said relationship represent the following:
a: spacing between a first end region ( 15 A), which faces toward the first adjustment lever ( 6 ), of the bearing bushing ( 3 ) and an engagement point (A) of the first adjustment lever ( 6 );
La: effective length of the first adjustment lever ( 6 );
Li: effective length of the second adjustment lever ( 9 );
b: spacing between the first end region ( 15 A) and a second end region ( 15 B), which faces toward the second adjustment lever ( 9 ), of the bearing bushing ( 3 ); and
c: spacing between the second end region ( 15 B) and a longitudinal central line (L 9 ) of the second adjustment lever ( 9 );
d: spacing between the second end region ( 15 B) and a force introduction point (M) at which the control device ( 11 ) is arranged.

Assignees

• Borgwarner Inc

Inventors

• Christmann Ralf
• Zahoransky Raduz

Classifications

• F02B37/183

  Arrangements of bypass valves or actuators therefor · CPC title

• F02B37/186 Primary

  Arrangements of actuators or linkage for bypass valves · CPC title

• F02B39/00

  Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00 · 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

• F01D17/105

  by passing part of the fluid · CPC title