CAMSHAFT ARRANGEMENT

• US 20190331008A1
• Filed: 03/27/2019
• Published: 10/31/2019
• Est. Priority Date: 04/26/2018
• Status: Active Grant

• Current Assignee: Volvo Car Corporation (AB Volvo)
• Original Assignee: Volvo Car Corporation (AB Volvo)
• Inventors: PETROV, Peter
• Granted Patent: US 10,550,735 B2
• Time in Patent Office: Days
• CPC Class Codes: F01L 1/047 Camshafts
• CPC Class Codes: F01L 1/3442 using hydraulic chambers with variable volume to transmit the rotating force
• CPC Class Codes: F01L 2001/0471 Assembled camshafts
• CPC Class Codes: F01L 2001/0475 Hollow camshafts
• CPC Class Codes: F01L 2001/34426 Oil control valves
• CPC Class Codes: F01L 2001/3443 Solenoid driven oil control valves
• CPC Class Codes: F01L 2001/34433 Location oil control valves

Abstract

A camshaft arrangement comprising a camshaft, a vane-type camshaft phaser attached to a first end of the camshaft, a valve actuating arrangement and an oil control valve. The oil control valve comprises an elongated valve member arranged centrally inside the camshaft. The elongated valve member can be adjusted in a longitudinal direction of the camshaft to control the oil flow to the vane-type camshaft phaser by actuation of an actuator. The valve actuating arrangement comprises a first valve actuating configuration attached to the camshaft and a second valve actuating configuration comprising an actuation arm connected to the actuator. The first valve actuating configuration is arranged to be actuated by the actuation arm of the second valve actuating configuration.

Claims

1. A camshaft arrangement, comprising:

a camshaft, a vane-type camshaft phaser attached to a first end of the camshaft, a valve actuating arrangement and an oil control valve, wherein the oil control valve comprises an elongated valve member arranged centrally inside the camshaft, where the elongated valve member can be adjusted in a longitudinal direction of the camshaft so as to control the oil flow to the vane-type camshaft phaser, wherein the valve actuating arrangement comprises a first valve actuating configuration attached to the camshaft and a second valve actuating configuration comprising an actuation arm connected to an actuator, the first valve actuating configuration being arranged to be actuated by the actuation arm of the second valve actuating configuration, thereby adjusting the elongated valve member.

2. The camshaft arrangement according to claim 1, wherein the first valve actuating configuration comprises an actuation ring mounted around the camshaft and an actuation ring member being attached to the actuation ring.

3. The camshaft arrangement according to claim 2, wherein the actuation ring member comprises an actuation pin attached to the actuation ring arranged to run through the camshaft.

4. The camshaft arrangement according to claim 3, wherein the camshaft comprises longitudinal openings for the actuation pin.

5. The camshaft arrangement according to claim 1, wherein the actuation arm comprises an actuation arm member arranged to actuate the first valve actuating configuration.

6. The camshaft arrangement according to claim 5, wherein the actuation arm member comprises a bearing surface adapted to glide against the actuation ring.

7. The camshaft arrangement according to claim 6, wherein the bearing surface is convex.

8. The camshaft arrangement according to claim 5, wherein the angular extension of the actuation arm member is less than 180°

.

9. The camshaft arrangement according to claim 5, wherein the actuation arm member is arranged to glide on the camshaft.

10. The camshaft arrangement according to claim 5, wherein the actuation arm member is arranged at a distance from the camshaft.

11. The camshaft arrangement according to claim 5, wherein the actuation arm member comprises a fork.

12. The camshaft arrangement according to claim 1, wherein the oil control valve comprises an oil control valve engagement member arranged to interact with the actuation ring member of the first valve actuating configuration.

13. An internal combustion engine comprising a camshaft arrangement according to claim 1.

14. The internal combustion engine according to claim 13, further comprising a cam cover, wherein the actuator is mounted outside of the cam cover.

15. A vehicle comprising an internal combustion engine according to claim 13.