# US 10,480,359 B2 · Camshaft adjusting device

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- Number: US 10,480,359 B2
- Document ID: US10480359B2
- Status: Granted
- Kind: B2
- Application number: 15/760,368
- Filed: 2016-08-11
- Published: 2018-08-30
- Granted: 2019-11-19
- Earliest claimed: 2015-10-28
- Assignees: Schaeffler Technologies AG & Co. KG
- Applicants: Schaeffler Technologies AG & Co. KG
- Inventors: Ali Bayrakdar
- Web page: https://patentgrep.com/patent/US10480359B2

## CPC

- F01L 1/3442: {using hydraulic chambers with variable volume to transmit the rotating force}
- F01L 1/047: Camshafts
- F01L 1/24: by fluid means, e.g. hydraulically
- F01L 1/344: changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L 1/352: using bevel or epicyclic gear
- 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 2001/2444: {Details relating to the hydraulic feeding circuit, e.g. lifter oil manifold assembly [LOMA]}
- F01L 2001/34433: {Location oil control valves}
- F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

## Abstract

A camshaft adjusting device (1) is provided having a camshaft adjuster (2, 3) and a camshaft (4) characterized in that the camshaft (4) include a camshaft end (5) which is designed to receive a first hydraulically actuatable camshaft adjuster (2) as well to receive a second hydraulically actuatable camshaft adjuster (3).

## Claims

### Claim 1

A camshaft adjusting device, comprising a camshaft adjuster and a camshaft, the camshaft includes a camshaft end constructed both for receiving a first hydraulically actuatable camshaft adjuster with a first connection and for receiving a second hydraulically actuatable camshaft adjuster with a second connection that is different than the first connection, and the camshaft end has two different threads, each configured to receive a respective screw for the first connection or the second connection.

### Claim 2 (depends on 1)

The camshaft adjusting device according to claim 1, wherein the camshaft end has a first oil conduit that is constructed for the first hydraulically actuatable camshaft adjuster.

### Claim 3 (depends on 2)

The camshaft adjusting device according to claim 2, wherein the camshaft end has a second oil conduit that is constructed for the second hydraulically actuatable camshaft adjuster.

### Claim 4

A camshaft adjusting device, comprising:
a camshaft having a camshaft end constructed both for receiving a first hydraulically actuatable camshaft adjuster with a first connection and for receiving a second hydraulically actuatable camshaft adjuster with a second connection that is different than the first connection, and the camshaft end has two different threads, each configured to receive a respective screw for the first connection or the second connection.

### Claim 5 (depends on 4)

The camshaft adjusting device of claim 4, further comprising a first hydraulically actuatable camshaft adjuster with the first connection, and a first screw that engages in a first of the two different threads.

### Claim 6 (depends on 5)

The camshaft adjusting device of claim 5, wherein the first screw comprises a central valve screw.

### Claim 7 (depends on 5)

The camshaft adjusting device of claim 5, wherein the first screw is adapted to block an oil conduit in the camshaft end that is configured for feeding the second hydraulically actuatable camshaft assembly.

### Claim 8 (depends on 4)

The camshaft adjusting device of claim 4, further comprising a second hydraulically actuatable camshaft adjuster with the second connection, and a second screw that engages in a second of the two different threads.

### Claim 9 (depends on 8)

The camshaft adjusting device of claim 8, further comprising a sleeve that surrounds a portion of the second screw and separates two oil supplies adapted to be supplied from the camshaft end for operating the second hydraulically actuatable camshaft adjuster.

### Claim 10 (depends on 9)

The camshaft adjusting device of claim 9, further comprising a control valve that is configured to feed oil to the two oil supplies in order to actuate the second hydraulically actuatable camshaft adjuster.