# US 9,039,354 B2 · Seal for a control device of a supercharger with valve means in the form of a waste gate

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- Number: US 9,039,354 B2
- Document ID: US9039354B2
- Status: Granted
- Kind: B2
- Application number: 13/459,148
- Filed: 2012-04-28
- Published: 2012-09-13
- Granted: 2015-05-26
- Earliest claimed: 2009-11-26
- Assignees: IHI Charging Systems International GmbH
- Applicants: Joachim Siegfried Delitz
- Inventors: Joachim Siegfried Delitz
- Web page: https://patentgrep.com/patent/US9039354B2

## CPC

- F01D 17/20: Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted (sensing elements alone F01D17/02; final actuators alone F01D17/10)
- F02C 6/12: Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
- F05D 2240/55: Seals
- Y02T 10/12: Improving ICE efficiencies
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

In a sealing arrangement for an control device of a charging device which sealing arrangement includes a bearing bushing in which an control shaft is rotatably supported by the bushing in a housing opening of the charging device, the control shaft is provided with a collar disposed in the housing opening at an axial end of the bushing and the collar includes a groove accommodating a seal ring which is in direct contact with the wall of the opening for sealing the shaft supported in the bushing directly with respect to the opening wall.

## Claims

### Claim 1

A sealing arrangement for a control device (10) for operating a valve (36) of an exhaust gas turbocharger, the control device (10) including an operating shaft (16) rotatably supported in an opening of a housing (12) via a bearing bushing (14) which extends only partially through the opening of the housing (12) so as to provide at one end of the bushing (14) an area (22) in which an operating shaft collar (24) with a circumferential groove (26) is arranged and a seal element (28) is disposed in the groove (26) between the operating shaft collar (24) and a surrounding wall area of the opening adjacent the bushing (14) for sealing the operating shaft (16) directly against the surrounding wall of the opening in the area (22) of the housing (12) at the one end of the bushing (14).

### Claim 2 (depends on 1)

The sealing arrangement according to claim 1, wherein the seal element is L-shaped in cross-section and a section of the sealing element (28) superimposes the collar (24) in the radial direction (32).

### Claim 3 (depends on 1)

The control device (10) according to claim 1, wherein the sealing element (28) is in the form of a sealing ring (28).

### Claim 4

An exhaust gas turbocharger with a control device (10) and a sealing arrangement for the control device (10) for operating a valve (36) of the exhaust gas turbocharger disposed in a housing (12), the control device (10) including an operating shaft (16) rotatably supported in an opening of the housing (12) via a bearing bushing (14) which extends only partially through the opening of the housing (12) so as to provide at one end of the bushing (14) an area (22) in which an operating shaft collar 24) collar (24) with a circumferential groove (26) is arranged and a seal element (28) is disposed between the operating shaft (16) and a surrounding wall area of the opening adjacent the bushing (14) for sealing the operating shaft (16) directly against the surrounding wall of the opening in the area (29) of the housing (12).