# US 2014/0190434 A1 · Preassembly of a camshaft phaser

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- Number: US 2014/0190434 A1
- Document ID: US20140190434A1
- Status: Published application
- Kind: A1
- Application number: 14/235,700
- Filed: 2012-05-22
- Published: 2014-07-10
- Earliest claimed: 2011-08-04
- Assignees: Schaeffler Technologies AG & Co. KG
- Inventors: Ali Bayrakdar
- Web page: https://patentgrep.com/patent/US20140190434A1

## CPC

- F01L 1/344: changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L 1/3442: {using hydraulic chambers with variable volume to transmit the rotating force}
- F01L 2001/0473: {Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod}
- F01L 2303/00: Manufacturing of components used in valve arrangements
- F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

## Abstract

A camshaft phasing system (10) for an internal combustion engine (6) includes a camshaft (16) and a camshaft phaser (15) that is axially slid onto the camshaft (16) and that has stator (34) and a rotor (36) driven by the stator (34), whereby the rotor (36) is mounted rotatably relative to the stator (34). A bushing (26) that is secured on the camshaft (16) is provided, whereby the camshaft phaser (15) is tightened on the camshaft (16) against the bushing (26). Moreover, a drive has an internal combustion engine and such a camshaft phasing system.

## Claims

### Claim at position 1

1-10. (canceled)

### Claim 11

A camshaft phasing system for an internal combustion engine, the camshaft phasing system comprising:
a camshaft;
a camshaft phaser axially slid onto the camshaft and having stator and a rotor driven by the stator, the rotor being mounted rotatably relative to the stator; and
a bushing secured on the camshaft, the camshaft phaser tightened on the camshaft against the bushing.

### Claim 12 (depends on 11)

The camshaft phasing system as recited in claim 11 wherein the rotor is tightened on the camshaft against the bushing.

### Claim 13 (depends on 11)

The camshaft phasing system as recited in claim 11 wherein the bushing is held on the camshaft via a press fit.

### Claim 14 (depends on 11)

The camshaft phasing system as recited in claim 11 wherein the camshaft has an axial stop for the bushing.

### Claim 15 (depends on 11)

The camshaft phasing system as recited in claim 11 further comprising a nut for tightening the camshaft phaser against the bushing.

### Claim 16 (depends on 15)

The camshaft phasing system as recited in claim 15 wherein the nut tightens the rotor.

### Claim 17 (depends on 11)

The camshaft phasing system as recited in claim 11 wherein the stator is mounted radially on the bushing.

### Claim 18 (depends on 11)

The camshaft phasing system as recited in claim 11 wherein the camshaft phaser is frictionally connected to the bushing.

### Claim 19 (depends on 18)

The camshaft phasing system as recited in claim 18 wherein the rotor is frictionally connected to the bushing.

### Claim 20 (depends on 11)

The camshaft phasing system as recited in claim 11 further comprising an outer tubular camshaft, the camshaft being held concentrically in the outer tubular camshaft, the outer tubular camshaft being connected to the stator of the camshaft phaser.

### Claim 21 (depends on 20)

The camshaft phasing system as recited in claim 20 wherein the outer tubular camshaft and the stator of the camshaft phaser are positively connected.

### Claim 22 (depends on 21)

The camshaft phasing system as recited in claim 21 wherein teeth positively connect the outer tubular camshaft and the stator.

### Claim 23

A drive comprising:
an internal combustion engine having a driven shaft; and