Device with an electromagnetic actuator

• US 20040031911A1
• Filed: 05/28/2003
• Published: 02/19/2004
• Est. Priority Date: 05/29/2002
• Status: Abandoned Application

• Current Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Original Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Inventors: Schmidt, Robert, Hoffmann, Frank
• Application Number:
  US10/446,143
• Publication Number:
  US 20040031911A1
• Time in Patent Office: Days
• US Class Current: 250/227.19
• CPC Class Codes: F01L 2009/2109 The armature being articulated perpendicularly to the coils axes
• CPC Class Codes: F01L 9/20 by electric means
• CPC Class Codes: F16K 31/0679 with more than one energising coil
• CPC Class Codes: F16K 37/0041 for measuring valve parameters F16K37/0033 takes precedence

Abstract

A device having an electromagnetic actuator for actuating a control element, in particular a charge cycle valve of an internal combustion engine. The actuator includes at least one elastic element, for example, a valve spring, provided for the purpose of elastic deformation. The elastic element is connected to a deformation sensor providing a signal making it possible to determine the deformation of the elastic element, and to determine the position of the control element.

Claims

1. An electromagnetic actuator device for actuating a control element, the actuator device comprising:

at least one elastic element provided for the purpose of elastic deformation; and

at least one deformation sensor each connected to one of said at least one elastic element.

2. The device according to claim 1, wherein the at least one deformation sensor is a strain gauge.

3. The device according to claim 1, wherein the at least one deformation sensor is a Bragg grating sensor.

4. The device according to claim 1, wherein said at least one deformation sensor is a plurality of deformation sensors.

5. The device according to claim 3, wherein the elastic element is part of a spring mechanism of the actuator device.

6. The device according to claim 1, wherein the elastic element is part of a spring mechanism of the actuator device.

7. The device according to claim 1, wherein the elastic element is a helical compression spring.

8. The device according to claim 1, wherein the elastic element is a torsion spring.

9. The device according to claim 1, further comprises an evaluation unit connected to the at least one deformation sensor for sensing the deformation of the elastic element.

10. The device according to claim 9, wherein the evaluation unit is provided for determining the position of the control element from the deformation of the elastic element.

11. The device according to claim 1, wherein said control element is a charge cycle valve of an internal combustion engine.

12. The device according to claim 1, wherein said at least one elastic element includes one of a strain gauge and a Bragg grating sensor and wherein said at least one deformation element includes a torsion spring connected to said Bragg grating sensor and a compression spring connected to said strain gauge.

13. The device according to claim 2, wherein the elastic element is part of a spring mechanism of the actuator device.

14. The device according to claim 3, wherein the elastic element is part of a spring mechanism of the actuator device.

15. The device according to claim 2, wherein the elastic element is a helical compression spring.

16. The device according to claim 3, wherein the elastic element is a helical compression spring.

17. The device according to claim 2, wherein the elastic element is a torsion spring.

18. The device according to claim 3, wherein the elastic element is a torsion spring.

19. The device according to claim 2, further comprises an evaluation unit connected to the at least one deformation sensor for sensing the deformation of the elastic element.

20. The device according to claim 3, further comprises an evaluation unit connected to the at least one deformation sensor for sensing the deformation of the elastic element.