# US 10,480,360 B2 · Cam phaser

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- Number: US 10,480,360 B2
- Document ID: US10480360B2
- Status: Granted
- Kind: B2
- Application number: 15/864,114
- Filed: 2018-01-08
- Published: 2018-05-17
- Granted: 2019-11-19
- Earliest claimed: 2015-07-30
- Assignees: ECO Holding 1 GmbH
- Applicants: ECO Holding 1 GmbH
- Inventors: Markus Heilig; Florian Hentsch; Dietmar Schulze
- Web page: https://patentgrep.com/patent/US10480360B2

## CPC

- F01L 1/3442: {using hydraulic chambers with variable volume to transmit the rotating force}
- F01L 2001/34479: {Sealing of phaser devices}
- F01L 2301/02: Using ceramic materials
- F01L 2303/00: Manufacturing of components used in valve arrangements
- F01L 2820/00: Details on specific features characterising valve gear arrangements
- F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

## Abstract

A cam phaser including a stator that is driven by a crank shaft of an internal combustion engine; and a rotor that is connectable torque proof with a cam shaft of the internal combustion engine and that includes plural blades that protrude radially outward from a rotor hub, wherein operating chambers arranged between the stator and the rotor are divided into pressure cavities by the blades, wherein the stator and the rotor are configured as sintered components, wherein displacement recesses are provided on axially configured faces of the stator and/or of the rotor wherein material is configured to flow into the displacement recesses during a deforming finishing of the faces.

## Claims

### Claim 1

A cam phaser, comprising:
a stator that is driven by a crank shaft of an internal combustion engine; and
a rotor that is connectable torque proof with a cam shaft of the internal combustion engine and that includes plural blades that protrude radially outward from a rotor hub,
wherein operating chambers arranged between the stator and the rotor are divided into pressure cavities by the blades,
wherein the stator and the rotor are configured as sintered components,
wherein displacement recesses are provided on axially configured faces of the stator or the rotor wherein material is configured to flow into the displacement recesses during a deforming finishing of the axially configured faces.

### Claim 2 (depends on 1)

The cam phaser according to claim 1, wherein the axially configured faces are finishable by height calibration.

### Claim 3 (depends on 2)

The cam phaser according to claim 2, wherein the displacement recesses are substantially evenly distributed on the axially configured faces.

### Claim 4 (depends on 2)

The cam phaser according to claim 2, wherein the displacement recesses are configured three dimensional facet shaped and respectively include a base surface and essentially trapezoid side surfaces so that circumferential bar structures envelop the displacement recesses.

### Claim 5 (depends on 4)

The cam phaser according to claim 4, wherein the circumferential bar structures form a calibration structure.

### Claim 6 (depends on 5)

The cam phaser according to claim 5, wherein the displacement recesses are arranged on the axially configured faces so that at least a portion of the bar structures forms a continuous structure which defines the axially configured faces circumferentially.

### Claim 7 (depends on 5)

The cam phaser according to claim 5, wherein the calibration structure includes a surface portion that is adapted to a size of the sintered components.

### Claim 8 (depends on 5)

The cam phaser according to claim 5, wherein an inclination angle of the trapezoid side surfaces is adapted to the surface portion of the calibration structure.