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Residual air gap disc

A technology of air-gap discs and electromagnets, which is applied to electrical components, electromagnets, valve details, etc., and can solve problems such as instability, deformation, and large unevenness

Active Publication Date: 2013-10-30
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the remaining air-gap disks used hitherto with a plurality of recesses spaced apart from one another in the circumferential direction are relatively unstable due to the remaining flow cross-section and are thus susceptible to possible deformations during assembly. influence; moreover, the remaining air-gap discs used hitherto, which release large flow cross-sections, have comparatively large unevennesses

Method used

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  • Residual air gap disc
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Experimental program
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Embodiment Construction

[0010] in accordance with figure 1 The illustration of FIG. 2 shows a residual air gap disk known from the prior art, which is made of non-magnetic material.

[0011] exist figure 1 The remaining air-gap disk 10 shown in has a circumference 12 substantially interrupted by outer recesses 14.1 to 14.5. The inner diameter of the outer recesses 14.1 to 14.5 is designated by the reference numeral 16, while the outer diameter delimiting the inner recesses 24.1 to 24.5 in the radial direction is designated by the reference numeral 18. In addition, according to figure 1 The remaining air-gap disk 10 reproduced in the view of , has an outer cutout 20 and an inner cutout 22 .

[0012] so can be obtained from figure 1 It follows that the outer recesses 14 . 1 to 14 . 5 are arranged relative to one another along the interrupted circumference 12 at an angular division of 72°. The segments separated from one another in the interrupted circumference 12 by outer recesses 14.1 to 14.5 eac...

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Abstract

The invention relates to a residual air gap disc (10) for magnetic groups of solenoid valves, particularly for actuating fuel injectors. With the residual air gap disc (10), a residual air gap between a front of a magnet core of the magnet group and an armature actuating a valve member is set. The residual air gap disc (10) comprises a substantially closed outer circumference (30). Between a first and a second diameter (44, 46), recesses (40) and closed surface regions (48) are configured in the circumferential direction.

Description

Background technique [0001] DE 19650865 A1 relates to a solenoid valve for controlling the fuel pressure in a control chamber of an injection valve, for example for a fuel injector used in a high-pressure accumulator injection system (common rail). The reciprocating movement of the valve piston, which opens or closes the injection opening of the injection valve, is controlled by the fuel pressure in the control chamber. The solenoid valve comprises an electromagnet, a movable armature and a valve element which moves with the armature and is loaded in the closing direction by the valve closing spring, which cooperates with the valve seat of the solenoid valve and thus controls the flow from the control chamber. Fuel drained. [0002] Residual air gap discs are used in solenoid assemblies used to operate solenoid valves for fuel injectors. The residual air gap disk is usually made of non-magnetic material and has a thickness in the order of about 0.1 mm. The residual air gap ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M63/00F02M51/06H01F7/08F16K31/06
CPCH01F2007/1661H01F7/08F02M63/007F02M51/0635F02M2200/9076F02M63/0026
Inventor M·德雷克塞尔R·格雷根
Owner ROBERT BOSCH GMBH