# US 2014/0154056 A1 · Exhaust-gas turbocharger

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- Number: US 2014/0154056 A1
- Document ID: US20140154056A1
- Status: Published application
- Kind: A1
- Application number: 14/235,548
- Filed: 2012-08-02
- Published: 2014-06-05
- Earliest claimed: 2011-08-08
- Assignees: BorgWarner Inc.
- Inventors: Thomas Ramb; Nico Kanoffsky
- Web page: https://patentgrep.com/patent/US20140154056A1

## CPC

- F01D 17/12: arranged in stator parts
- 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)}
- F02B 37/186: {Arrangements of actuators or linkage for bypass valves}
- F02B 37/24: by using pumps or turbines with adjustable guide vanes
- F05D 2220/40: in turbochargers
- F05D 2260/33: with a bayonet coupling
- F05D 2260/36: by a form fit connection, e.g. by interlocking
- F05D 2260/56: using cams or eccentrics
- Y02T 10/12: Improving ICE efficiencies
- Y10T 403/7007: Bayonet joint
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- 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
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An exhaust-gas turbocharger (1) having a turbine (2) which is provided with a variable turbine geometry (18) and/or a wastegate; and having an actuator (11) which is connected to the variable turbine geometry (18) and/or the wastegate via a coupling rod (14; 14′; 14″). The coupling rod (14; 14′) is connected at its end regions (21, 22) at one side to the actuator (11) and at the other side to a pin (19) of an adjusting shaft arrangement (23; 26) of the variable turbine geometry (18) and/or of the wastegate. The pin (19) of the adjusting shaft arrangement (23; 26) is in the form of a bayonet pin, and that end region (22) of the coupling rod (14) which interacts with the pin (19) is in the form of a bayonet receptacle (24; 27) which is matched to the bayonet pin (19).

## Claims

### Claim 1

An exhaust-gas turbocharger (1) having
a turbine (2) which is provided with a variable turbine geometry (18) and/or a wastegate; and
an actuator (11) which is connected to the variable turbine geometry (18) and/or the wastegate via a coupling rod (14; 14′; 14″), wherein the coupling rod (14; 14′) is connected at its end regions (21, 22) at one side to the actuator (11) and at the other side to a pin (19) of an adjusting shaft arrangement (23; 26) of the variable turbine geometry (18) and/or of the wastegate,
wherein the pin (19) of the adjusting shaft arrangement (23; 26) is in the form of a bayonet pin, and
wherein end region (22) of the coupling rod (14) which interacts with the pin (19) is in the form of a bayonet receptacle (24; 27) which is matched to the bayonet pin (19).

### Claim 2 (depends on 1)

The exhaust-gas turbocharger as claimed in claim 1,
wherein the actuator (11) is provided with a bayonet pin (20′), and
wherein the coupling rod (14; 14′) is provided, at its two end regions (21, 22), with in each case one bayonet receptacle (24, 25), which bayonet receptacles are adapted in terms of shape and dimensions to the bayonet pins (19, 20) of the adjusting shaft arrangement (23) and of the actuator (11).

### Claim 3 (depends on 1)

The exhaust-gas turbocharger as claimed in claim 1, wherein the coupling rod (14″) has a guide piece (28), on the end region (29) of which the bayonet receptacle (27) is arranged, and in that the other end region (30) of the guide piece (28) is connected to an actuator regulating rod (31).

### Claim 4

A coupling rod (14; 14′; 14″) of an exhaust-gas turbocharger (1), wherein at least one end region (29) is equipped with a bayonet receptacle (27).

### Claim 5 (depends on 4)

The coupling rod as claimed in claim 4, wherein two end regions (21, 22) are provided which are each equipped with an associated bayonet receptacle (24, 25).

### Claim 6 (depends on 4)

The coupling rod as claimed in claim 4, wherein a guide piece (28) is provided, on the end region (29) of which the bayonet receptacle (27) is arranged and on the other end region (30) of which an actuator regulating rod (31) is arranged.