Starter mechanism having a multi-stage plunger relay

• US 8,544,437 B2
• Filed: 02/01/2008
• Issued: 10/01/2013
• Est. Priority Date: 03/30/2007
• Status: Active Grant

• Current Assignee: Seg Automotive Germany GMBH
• Original Assignee: Robert Bosch GmbH
• Inventors: Heusel, Jochen, Neuburger, Martin, Knorr, Torsten
• Primary Examiner(s): Cronin, Stephen K
• Assistant Examiner(s): Castro, Arnold
• Application Number:
  US12/594,086
• Publication Number:
  US 20100126454A1
• Time in Patent Office: 2,069 Days
• Field of Search: 123/179.3, 335/256
• US Class Current: 123/179.3
• CPC Class Codes: F02N 11/087 Details of the switching means in starting circuits, e.g. relays or electronic switches
• CPC Class Codes: F02N 15/067 the starter comprising an electro-magnetically actuated lever
• CPC Class Codes: F02N 2011/0892 Two coils being used in the starting circuit, e.g. in two windings in the starting relay or two field windings in the starter
• CPC Class Codes: F16K 7/02 with tubular diaphragm
• CPC Class Codes: H01F 2007/1692 Electromagnets or actuators with two coils
• CPC Class Codes: H01F 7/16 Rectilinearly-movable armatures H01F7/17 takes precedence
• CPC Class Codes: H01H 47/06 by changing number of serially-connected turns or windings
• CPC Class Codes: H01H 47/08 by changing number of parallel-connected turns or windings
• CPC Class Codes: H01H 50/44 Magnetic coils or windings
• CPC Class Codes: H01H 51/065 Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles details H01H50/20

Abstract

A plunger relay includes a movable actuating element on which a first solenoid actuator is acting in force-transmitting manner. The plunger relay has at least one second solenoid actuator, which is acting on the same movable actuating element in force-transmitting manner, and whose magnetic force is able to be set independently of the magnetic force of the first solenoid actuator.

Claims

1. A plunger relay, comprising:

a movable actuating element on which a first solenoid actuator is actable in a force-transmitting manner; and

at least one second solenoid actuator, which is actable on a same movable actuating element in a force-transmitting manner, and whose magnetic force is able to be set independently of a magnetic force of the first solenoid actuator;

wherein the first solenoid actuator and the second solenoid actuator are each arranged as an individual winding section of a continuous winding, which has a tap that separates the winding section of the first solenoid actuator from the winding section of the second solenoid actuator.

2. The plunger relay according to claim 1, wherein the actuating element includes a magnetic section, and both the magnetic force of the first solenoid actuator and the magnetic force of the second solenoid actuator is actable on the magnetic section of the actuating element.

3. The plunger relay according to claim 1, wherein the first solenoid actuator and the second solenoid actuator are arranged as windings, which are at least partially concentric with respect to each other.

4. The plunger relay according to claim 1, wherein the first solenoid actuator and the second solenoid actuator are each arranged as a winding that has two electrically connectable ends.

5. The plunger relay according to claim 1, further comprising:

at least one NTC (negative temperature coefficient) element which is inserted into a current supply of at least one of (a) the first and (b) the second solenoid actuator and positioned to detect a temperature of at least one of (a) the first and (b) the second solenoid actuator.

6. The plunger relay according to claim 1, wherein the actuating element includes a magnetic section, and both the magnetic force of the first solenoid actuator and the magnetic force of the second solenoid actuator is actable on the magnetic section of the actuating element, and wherein the first solenoid actuator and the second solenoid actuator are arranged as windings, which are at least partially concentric with respect to each other.

7. The plunger relay according to claim 6, further comprising:

at least one NTC (negative temperature coefficient) element which is inserted into a current supply of at least one of (a) the first and (b) the second solenoid actuator and positioned to detect a temperature of at least one of (a) the first and (b) the second solenoid actuator.

8. The plunger relay according to claim 1, wherein the actuating element includes a magnetic section, and both the magnetic force of the first solenoid actuator and the magnetic force of the second solenoid actuator is actable on the magnetic section of the actuating element, and wherein the first solenoid actuator and the second solenoid actuator are each arranged as a winding that has two electrically connectable ends.

9. The plunger relay according to claim 8, further comprising:

at least one NTC (negative temperature coefficient) element which is inserted into a current supply of at least one of (a) the first and (b) the second solenoid actuator and positioned to detect a temperature of at least one of (a) the first and (b) the second solenoid actuator.

10. The plunger relay according to claim 1, wherein the first solenoid actuator and the second solenoid actuator are arranged as windings, which enclose at least one of (a) a yoke having at least one end situated at the movable actuating element and (b) the movable actuating element.

11. A method for actuating a clutch with the aid of a magnetic force generated by a solenoid actuator device, the method comprising:

providing the solenoid actuator device with one continuous winding having at least two winding sections;

generating the magnetic force by the winding sections when energized; and

separately energizing the winding sections.

12. The method according to claim 11, wherein the actuation of the clutch includes the supply of current to a number of winding sections, the number increasing or decreasing over a time interval.

13. A starter for a combustion engine of a motor vehicle, comprising:

a plunger relay, wherein the plunger relay includes a movable actuating element on which a first solenoid actuator is actable in a force-transmitting manner, and at least one second solenoid actuator, which is actable on a same movable actuating element in a force-transmitting manner, and whose magnetic force is able to be set independently of a magnetic force of the first solenoid actuator;

an electric starter motor; and

a clutch;

wherein the plunger relay is connected to the clutch for actuation, and the clutch supplies rotary power generated by the electric starter motor to the combustion engine as a function of the actuation, and

wherein the first solenoid actuator and the second solenoid actuator are each arranged as an individual winding section of a continuous winding, which has a tap that separates the winding section of the first solenoid actuator from the winding section of the second solenoid actuator.

14. The starter according to claim 13, wherein the plunger relay includes at least one NTC (negative temperature coefficient) element which is inserted into a current supply of at least one of (a) the first and (b) the second solenoid actuator and positioned to detect a temperature of at least one of (a) the first and (b) the second solenoid actuator.

15. A control device for a starter of a combustion engine, comprising:

a control arrangement which is arranged to output at least two different output signals, by which at least two different solenoid actuators of the starter, which act on a same actuating element, are able to be controlled independently of each other, wherein the starter includes;

a plunger relay, wherein the plunger relay includes a movable actuating element on which a first solenoid actuator is actable in a force-transmitting manner, and at least one second solenoid actuator, which is actable on a same movable actuating element in a force-transmitting manner, and whose magnetic force is able to be set independently of a magnetic force of the first solenoid actuator;

an electric starter motor; and

a clutch;

wherein the plunger relay is connected to the clutch for actuation, and the clutch supplies rotary power generated by the electric starter motor to the combustion engine as a function of the actuation.