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Valve assembly for an injection valve and injection valve

A valve assembly, injection valve technology, applied in the field of fuel injection valve, solenoid injection valve, can solve the problem of reducing the maximum fuel pressure, less kinetic energy and so on

Active Publication Date: 2018-01-16
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, less kinetic energy can build up before actually opening, which reduces the maximum fuel pressure for the valve

Method used

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  • Valve assembly for an injection valve and injection valve
  • Valve assembly for an injection valve and injection valve
  • Valve assembly for an injection valve and injection valve

Examples

Experimental program
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Embodiment Construction

[0029] figure 1 Injection valve 1 , which is particularly suitable for metering fuel into an internal combustion engine, is shown in longitudinal section. Injection valve 1 includes a valve assembly 3 . The valve assembly 3 comprises a valve body 4 having a central longitudinal axis L. As shown in FIG. The housing 6 is partially arranged to surround the valve body 4 .

[0030] The valve body 4 includes a chamber 9 . The chamber 9 has a fluid outlet portion 7 . The fluid outlet portion 7 communicates with the fluid inlet portion 5 provided in the valve body 4 . The fluid inlet portion 5 and the fluid outlet portion 7 are located in particular at opposite axial ends of the valve body 4 . Chamber 9 receives valve needle 11 . The valve needle 11 includes a needle shaft 15 and a sealing ball 13 welded to the end of the needle shaft 15 .

[0031] In the closed position of the valve needle 11 , the sealing ball 13 rests sealingly on a seat plate 17 with at least one injection ...

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PUM

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Abstract

The invention relates to a valve assembly for an injection valve and the injection valve. A valve assembly (3) for an injection valve (1) is disclosed. It comprises a valve body (4) comprising a cavity (9) with a fluid inlet portion (5) and a fluid outlet portion (7), a valve needle (11), an armature (23) which is able to slide on the valve needle (11), and a disc element (40) positioned to limitaxial displaceability of the armature (23) relative to the valve needle (11). The disc element (40) comprises a plurality of passages (44) extending in axial direction through a disc-shaped part (43)of the disc element (40). The passages (44) provide a first flow resistance for a fluid passing in a direction away from the fluid outlet passage (7) and a second flow resistance in a direction towards the fluid outlet passage (7), wherein the second flow resistance is larger than the first flow resistance.

Description

technical field [0001] The invention relates to a valve assembly for an injection valve and to an injection valve, for example a fuel injection valve for a vehicle. It relates in particular to solenoid injection valves. Background technique [0002] Sometimes injection valves comprise a disc-shaped element, sometimes referred to as a "hydraulic disc", which is arranged in the axial region of the valve needle facing the fluid outlet portion and is fixedly connected to the valve needle. The disc-shaped element restricts the movement of the armature. Furthermore, it operates to dissipate the kinetic energy of the armature during the closing phase of the valve as the fluid is forced through the gap between the armature and the disc-shaped element. Thus, the disk element helps reduce needle bounce and post-injection. [0003] When the coil of the electromagnetic actuator unit is energized, the large diameter of the disc-shaped element causes the armature to start moving more s...

Claims

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Application Information

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IPC IPC(8): F02M51/06F02M61/10F02M61/16
CPCF02M51/0685F02M2200/304F02M61/188F02M51/0617F02M61/10F02M51/0653F02M61/161
Inventor I·伊佐F·法拉希
Owner VTESCO TECH GMBH
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