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Injection valve with magnetic ring element

A magnetic ring and injection valve technology, which is applied in the direction of engine components, fuel injection devices, special fuel injection devices, etc., can solve the problem of reducing the opening pressure of the injector and achieve the effect of saving space

Active Publication Date: 2021-02-09
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The basic question about this injection valve is that a high calibrated spring preload is expected during the closing phase as it results in faster closing and better dynamic behavior of the injector, while at the same time a high calibrated spring preload results in a reduced maximum injector opening pressure

Method used

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  • Injection valve with magnetic ring element
  • Injection valve with magnetic ring element
  • Injection valve with magnetic ring element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] figure 1 An injection valve 1 is shown, which is particularly suitable for dosing fuel to an internal combustion engine. The injection valve 1 includes a valve assembly 3 . The valve assembly 3 includes a valve body 4 having a central longitudinal axis, a valve needle 11 and a calibration spring 18 . The injection valve 1 also includes a housing 6 arranged partially around the valve body 4 .

[0040] The valve body 4 includes a cavity 9 . The cavity 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 . The cavity 9 receives the valve needle 11 . The valve needle 11 includes a needle shaft 15 and a sealing ball 13 welded to the tip of the needle shaft 15 .

[0041] In the closed position of the valve needle 11 , the sealing ball 13 rests sealingly on the seat...

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PUM

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Abstract

A jet valve (1) is disclosed having a valve assembly (2) comprising: a valve body (4) having a chamber (9); a valve needle (11) comprising a fixedly connected an upper retaining element (24) to the shaft of said valve needle (11); and a calibration spring (18). The injection valve (1) has an electromagnetic actuator unit (19) with an armature (23) that is axially displaceable relative to the valve needle (11). The injection valve (1) also comprises a further spring element (27), which is arranged parallel to the calibration spring (18) and preloads an axially displaceable magnetic ring element (28).

Description

technical field [0001] The present invention relates to an injection valve, for example, a fuel injection valve for a vehicle. It specifically relates to solenoid injection valves. Background technique [0002] Typically, the injection valve is a so-called "normally closed valve" with a valve needle biased towards the closed position by a calibrated spring. The fundamental issue with this injection valve is that a high calibrated spring preload is expected during the closing phase, as it results in faster closing and better injector dynamic behavior, while at the same time a high calibrated spring preload results in a reduced maximum injector opening pressure . Therefore, spring preload has always been a compromise between the behavior during the opening and closing phases and the maximum opening pressure of the injector. This problem is especially acute in the case of high fuel pressures because of the need to calibrate the high spring rates of the springs. [0003] DE ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M51/06F02M61/20
CPCF02M51/0685F02M61/20F02M2200/50F02M51/0664
Inventor L.加尔朱洛A.阿格雷斯塔M.梅希
Owner VTESCO TECH GMBH