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Solenoid assembly with residual air gap disk for solenoid valve, solenoid valve and method for manufacturing residual air gap disk

A technology of electromagnetic components and air gap discs, which is applied to electromagnets with armatures, electrical components, fuel injection devices with special measures to affect magnetic flux, etc., can solve problems such as increased deposition, and achieve the effect of improving robustness

Active Publication Date: 2018-01-09
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because of increasing the blend from biofuels to diesel fuels, increased deposition

Method used

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  • Solenoid assembly with residual air gap disk for solenoid valve, solenoid valve and method for manufacturing residual air gap disk
  • Solenoid assembly with residual air gap disk for solenoid valve, solenoid valve and method for manufacturing residual air gap disk

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Embodiment Construction

[0018] exist figure 1 An electromagnetic assembly 7 according to the invention is shown in , which comprises a magnetic core 4 forming an annular inner pole 2 and an annular outer pole 3 . A solenoid coil 1 is arranged between an inner pole 2 and an outer pole 3 . The electromagnetic coil 1 interacts with the reciprocating coil 5 via the anchor 8 . An anchor bolt 8 runs through the central hole 9 of the magnetic core 4 , and a pressure spring 10 is also accommodated in the central hole 9 . The pressure spring 10 is supported on the anchor bolt 8 for resetting the armature 5 . The outer pole 3 of the magnetic core 4 is surrounded by a housing part 11 .

[0019] The residual air-gap disk 6 bears against the outer pole 3 of the magnetic core 4 to form a travel stop. The remaining air-gap disk 6 is currently made of plastic with a repellent coating. Moreover, the plastic formed by the repellent coating contains nanoscale additions, resulting in a high surface finish of the rem...

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Abstract

The invention relates to a solenoid assembly for a solenoid valve for the actuation of fuel injectors comprising a solenoid coil (1) as well as an inner pole (2) and an outer pole (3) having a solenoid core (4), additionally comprising an anchor (5) that can be moved in a lifting manner working together with the solenoid coil (1) as well as a residual air gap disc (6) arranged between the anchor (5) and the solenoid core (4) for the formation of a stroke limit stop. According to the invention, the residual air gap disc (6) is produced from a coating-repellent plastic or contains one such plastic. The invention also relates to a method for the production of a residual air gap disc (6) for a solenoid assembly (7) in accordance with the invention as well as a solenoid valve with one such solenoid assembly (7).

Description

technical field [0001] The present invention relates to a solenoid assembly for operating a solenoid valve of a fuel injector. Such a solenoid assembly includes a residual air-gap disk for forming a travel stop for a reciprocating armature. The subject matter of the invention is also a method for producing a residual air-gap disk for a solenoid assembly according to the invention and a solenoid valve with such a solenoid assembly. Background technique [0002] Publication DE 10 2008 040 073 A1 describes a solenoid valve for controlling the fuel pressure in the control chamber of an injection valve, wherein the solenoid valve has a solenoid assembly comprising a solenoid coil, a magnetic core and a reciprocating motion the armature. The residual air gap disk is arranged between the magnetic core and the armature, serves as a travel stop for the armature, and is made of non-magnetic material. [0003] Also known from the publication DE 10 2009 003 213 A1 is a residual air g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F7/08H01F7/16F02M63/00
CPCF02M47/027F02M63/0021F02M63/0075F02M2200/07F02M2200/08F02M2200/306F02M2200/9015H01F7/081H01F7/1638H01F2007/1661
Inventor A·埃伦施勒格尔H·拉普
Owner ROBERT BOSCH GMBH