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Fuel injection valve

A fuel injection valve and valve seat technology, which is applied to fuel injection devices, charging systems, engine components, etc., can solve the problems of reduced flow rate and reduced fuel atomization effect, and achieve the effect of reducing dead space.

Inactive Publication Date: 2012-05-09
HITACHI AUTOMOTIVE SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the flow rate of fuel in the fuel peripheral chamber is reduced, and the atomization effect of fuel may be reduced

Method used

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  • Fuel injection valve
  • Fuel injection valve
  • Fuel injection valve

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Embodiment 1

[0034] The fuel injection valve 1 of the first embodiment will be described.

[0035] [Structure of Fuel Injection Valve]

[0036] figure 1 is an axial sectional view of the fuel injection valve 1 . This fuel injection valve 1 is used in an automobile engine and the like.

[0037] The fuel injection valve 1 has: a magnetic cylinder body 2, a core cylinder body 3 accommodated in the magnetic cylinder body 2, a valve body 4 slidable in the axial direction, a valve shaft 5 integrally formed with the valve body 4, and a valve shaft through which the valve is closed. The valve seat part 7 of the valve seat 6 that is closed by the valve body 4, the nozzle plate 8 with the injection hole that injects fuel when the valve is opened, the electromagnetic coil 9 that makes the valve body 4 slide in the valve opening direction when the valve is energized, and the yoke 10 that induces magnetic flux .

[0038] The magnetic cylinder 2 is made of, for example, a metal pipe formed of a magn...

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PUM

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Abstract

The present invention provides a fuel injection valve which can restrain flow speed reduction caused fuel flow stripping and can realize particle minimization of the fuel. The fuel injection valve is provided with an intermediate plate, wherein the intermediate plate is provided with a rectifying hole which has one end that is communicated with an opening of a valve base component and the other end that is communicated with a middle chamber.

Description

technical field [0001] The present invention relates to a fuel injection valve used as a fuel injection valve for an engine. Background technique [0002] As such a technique, the technique described in the following patent document 1 is disclosed. This gazette discloses that when the fuel injection valve is opened, fuel flows to the fuel constriction portion through the gap between the valve body and the valve seat surface, and the fuel that has passed through the fuel constriction portion expands outward in the fuel peripheral injection chamber. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2003-148299 [0004] In the technology described in the above-mentioned patent documents, when the fuel flows out from between the valve body and the valve seat surface, since the space between the fuel constriction portion from the valve body is wide, the fuel collides and turbulent flow occurs, and the flow of the fuel In a turbulent state, fuel flows to the fuel periphe...

Claims

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Application Information

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IPC IPC(8): F02M51/06F02M61/18
Inventor 中井敦士小林信章斋藤贵博大野洋史
Owner HITACHI AUTOMOTIVE SYST LTD