# US 11,306,615 B2 · Rotor for a turbocharger

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- Number: US 11,306,615 B2
- Document ID: US11306615B2
- Status: Granted
- Kind: B2
- Application number: 16/824,742
- Filed: 2020-03-20
- Published: 2020-07-09
- Granted: 2022-04-19
- Earliest claimed: 2017-09-20
- Assignees: Vitesco Technologies GmbH
- Applicants: Vitesco Technologies GMBH
- Inventors: Holger Fäth; Thomas Hendel
- Web page: https://patentgrep.com/patent/US11306615B2

## CPC

- F01D 25/183: {Sealing means}
- F01D 5/048: {Form or construction}
- F01D 25/16: Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C)
- F16C 17/00: Sliding-contact bearings for exclusively rotary movement (F16C32/06 takes precedence; adjustable bearings F16C23/00, F16C25/00)
- F05D 2220/40: in turbochargers
- F05D 2250/293: lathed, e.g. rotation symmetrical
- F05D 2250/294: grooved
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

There is disclosed a rotor for a turbocharger, wherein the rotor has a rotor shaft, a carrier sleeve, a bearing collar and an oil diverting ring. The oil diverting ring is arranged on the carrier sleeve and is spaced apart from the rotor shaft in the radial direction by means of the carrier sleeve.

## Claims

### Claim 1

A rotor for a turbocharger, the rotor comprising:
a rotor shaft;
a carrier sleeve;
a sealing bushing, the sealing bushing arranged on the carrier sleeve;
an oil diverting ring;
a bearing collar; and
wherein the oil diverting ring, as a separate component, is arranged adjacent to the sealing bushing in an axial direction on the carrier sleeve and is spaced apart from the rotor shaft in a radial direction thereof;
wherein the bearing collar, as a separate component, is arranged on the carrier sleeve spaced apart from the oil diverting ring such that an axial bearing is located in between the bearing collar and the oil diverting ring.

### Claim 2 (depends on 1)

The rotor of claim 1, wherein the carrier sleeve is formed as part of the sealing bushing and the oil diverting ring is arranged on the carrier sleeve of the sealing bushing.

### Claim 3 (depends on 2)

The rotor of claim 2, wherein the oil diverting ring is pressed, soldered, welded, adhesively bonded, riveted or screwed to the sealing bushing.

### Claim 4 (depends on 3)

The rotor of claim 3, wherein the sealing bushing provides a step on the carrier sleeve, onto which the oil diverting ring is fitted.

### Claim 5 (depends on 4)

The rotor of claim 4, wherein the bearing collar is also arranged on the step provided by the sealing bushing.

### Claim 6 (depends on 4)

The rotor of claim 4, wherein the bearing collar is arranged on the same step of the carrier sleeve as the oil diverting ring or is arranged on a further step of the carrier sleeve.

### Claim 7 (depends on 5)

The rotor of claim 5, wherein the bearing collar comprises an annular disk.

### Claim 8 (depends on 1)

The rotor of claim 1, further comprising shaft sealing rings arranged on the carrier sleeve, forming the sealing bushing.

### Claim 9 (depends on 8)

The rotor of claim 8, wherein the oil diverting ring is in contact with one of the shaft sealing rings.

### Claim 10 (depends on 1)

The rotor of claim 1, wherein the oil diverting ring has a surface which is embossed, coated, or hardened.

### Claim 11 (depends on 1)

The rotor of claim 1, wherein the bearing collar has a surface which is embossed, coated, or hardened.

### Claim 12 (depends on 1)

The rotor of claim 1, wherein the carrier sleeve is produced using a forming process and an additional grinding process.

### Claim 13 (depends on 1)

The rotor of claim 1, wherein the carrier sleeve has at least a partially conical outer contour.