Exhaust-gas turbocharger

Patent metadata

Field	Value
Publication number	US-2016169093-A1
Application number	US-201414905884-A
Country	US
Kind code	A1
Filing date	Jul 15, 2014
Priority date	Jul 22, 2013
Publication date	Jun 16, 2016
Grant date	—

Abstract

An exhaust-gas turbocharger with a compressor with a charge pressure control device. An actuator is provided which moves a control rod arrangement. The control rod arrangement is in turn rotatably connected to a lever. The charge pressure control device is actuated by the lever. A pin is arranged on the lever. The control rod arrangement has a bushing which is pushed onto the pin. The connection between pin and bushing constitutes a rotatable connection for enabling the lever to be actuated by the control rod arrangement. This arrangement is very simple to produce and very simple to assemble because the bushing must merely be pushed onto the pin.

First claim

1 . An exhaust-gas turbocharger ( 1 ) comprising:
a compressor ( 5 ) with a compressor wheel ( 7 ), a turbine ( 2 ) with a turbine wheel ( 4 ), a charge pressure control device ( 9 ), an actuator ( 13 ) for actuating the charge pressure control device ( 9 ), a control rod arrangement ( 12 ) that can be moved by the actuator ( 13 ), and a lever ( 11 ), which is connected to the charge pressure control device ( 9 ), for opening and closing the charge pressure control device ( 9 ), the control rod arrangement ( 12 ) being pivotably connected to the lever ( 11 ), the control rod arrangement ( 12 ) having a bushing ( 16 ) and the lever ( 11 ) having a pin ( 18 ), the pin ( 18 ) being pivotably inserted in the bushing ( 16 ), and the control rod arrangement ( 12 ) having a rod ( 14 ), on the end of which there is arranged a guide piece ( 15 ), the bushing ( 16 ) being a constituent part of the guide piece ( 15 ), or the bushing ( 16 ) being directly and fixedly connected to the guide piece ( 15 ), wherein the guide piece ( 15 ) has a partially trough-shaped cutout ( 20 ), the rod ( 14 ) being placed into the cutout ( 20 ) and welded to, pressed together with or brazed to the guide piece ( 15 ).

2 . The exhaust-gas turbocharger as claimed in claim 1 , wherein the pin ( 18 ) is of convex form at its circumference.

3 . The exhaust-gas turbocharger as claimed in claim 2 , wherein the pin ( 18 ) is of convex form with a radius (R), and wherein the bushing ( 16 ) has a diameter (D), the radius (R) amounting to at least 100% of the diameter.

4 . The exhaust-gas turbocharger as claimed in claim 1 , wherein the bushing ( 16 ) is a separately manufactured component of the control rod arrangement ( 12 ).

5 . The exhaust-gas turbocharger as claimed in claim 1 , wherein the guide piece ( 15 ) is a casting.

6 . The exhaust-gas turbocharger as claimed in claim 1 , wherein the bushing ( 16 ) and/or the pin ( 18 ) is hardened.

7 . A method for the assembly of an exhaust-gas turbocharger ( 1 ), comprising the following steps in the stated sequence:
providing a turbine housing ( 3 ) for accommodating a turbine wheel ( 4 ), assembling a charge pressure control device ( 9 ) which has a lever ( 11 ), mounting a guide piece ( 15 ) onto a pin ( 18 ) that is connected to the lever ( 11 ), placing a rod ( 14 ) into a partially trough-shaped cutout ( 20 ) on the guide piece ( 15 ), and welding or brazing the rod ( 14 ) to the guide piece ( 15 ).

8 . The method as claimed in claim 7 , wherein, before the welding or brazing of the rod ( 14 ) to the guide piece ( 15 ), the rod ( 14 ) is already connected to an actuator ( 13 ) and the actuator ( 13 ) is mounted onto a compressor housing ( 6 ) that is to be connected to the turbine housing ( 3 ).

Assignees

• Borgwarner Inc

Inventors

• Keller Peter

Classifications

• F02C6/12

  Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure · CPC title

• F05D2220/40

  in turbochargers · CPC title

• F05D2260/606

  Bypassing the fluid · CPC title

• F02B37/186 Primary

  Arrangements of actuators or linkage for bypass valves · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title