JP2020133594A5 - - Google Patents
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- JP2020133594A5 JP2020133594A5 JP2019032314A JP2019032314A JP2020133594A5 JP 2020133594 A5 JP2020133594 A5 JP 2020133594A5 JP 2019032314 A JP2019032314 A JP 2019032314A JP 2019032314 A JP2019032314 A JP 2019032314A JP 2020133594 A5 JP2020133594 A5 JP 2020133594A5
- Authority
- JP
- Japan
- Prior art keywords
- needle
- nozzle
- housing
- injector
- outer needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Claims (8)
第１噴口（１０ｈ）を有するハウジング（１０）と、
前記ハウジングの前記第１噴口と反対側に設けられた筐体（９０）と、
前記ハウジングおよび前記筐体に収納され、前記ハウジングおよび前記筐体内を摺動するとともに前記第１噴口を開閉するニードルアッセンブリ（２０、３０、４０、５０）と、
前記筐体の外側に配置され、前記ニードルアッセンブリを駆動して移動させる電気アクチュエータ（６０）と、
前記筐体に収納され、前記ニードルアッセンブリの移動を規制する固定コア（７０）と、
を備え、
前記ニードルアッセンブリは、
前記第１噴口の開閉を行うアウターニードル（２０）と、
第２噴口（２０ｈ）を開閉するインナーニードル（３０）であって、前記アウターニードルの内部に収納され前記アウターニードル内を摺動するインナーニードルと、
前記インナーニードルの前記第２噴口と反対側に設けられたストッパ（５０）と、
前記電気アクチュエータによって駆動される可動コアであって、前記ストッパと共に前記インナーニードルを移動させる可動コア（４０）と、
を有し、
前記アウターニードルは、前記第２噴口を有する第１アウターニードル部（２０ａ）と、前記第２噴口と反対側の第２アウターニードル部（２０ｂ）と、前記第２アウターニードル部の内側に配置された当接部であって前記インナーニードルが前記第２噴口の開弁方向に移動したときに、前記インナーニードルと当接する当接部（２２）と、を有し、
前記インナーニードルと前記第１アウターニードル部と前記当接部を構成する材料は、前記第２アウターニードル部を構成する材料よりもビッカース硬度が大きく、
前記可動コアは、前記電気アクチュエータの駆動により前記インナーニードルを移動させて前記第２噴口を開弁させ、前記インナーニードルが前記当接部に当接した後は、前記アウターニードルを移動させて前記第１噴口を開弁させる、インジェクタ。 An injector (100) that injects a fluid.
A housing (10) having a first nozzle (10h) and
A housing (90) provided on the opposite side of the housing to the first nozzle,
Needle assemblies (20, 30, 40, 50) that are housed in the housing and the housing, slide in the housing and the housing, and open and close the first nozzle.
An electric actuator (60) arranged on the outside of the housing to drive and move the needle assembly, and
A fixed core (70) housed in the housing and restricting the movement of the needle assembly, and
With
The needle assembly is
An outer needle (20) that opens and closes the first nozzle, and
An inner needle (30) that opens and closes the second nozzle (20h), and is an inner needle that is housed inside the outer needle and slides in the outer needle.
A stopper (50) provided on the side of the inner needle opposite to the second nozzle, and
A movable core (40) that is a movable core driven by the electric actuator and moves the inner needle together with the stopper.
Have,
The outer needle is arranged inside the first outer needle portion (20a) having the second nozzle, the second outer needle portion (20b) opposite to the second nozzle, and the second outer needle portion. It has a contact portion (22) that comes into contact with the inner needle when the inner needle moves in the valve opening direction of the second injection port.
The material constituting the inner needle, the first outer needle portion, and the contact portion has a higher Vickers hardness than the material constituting the second outer needle portion.
The movable core moves the inner needle by driving the electric actuator to open the second nozzle, and after the inner needle comes into contact with the abutting portion, the outer needle is moved to the above-mentioned. An injector that opens the first nozzle.
前記ストッパは、前記インナーニードルに溶接されている、インジェクタ。 The injector according to claim 1.
The stopper is an injector welded to the inner needle.
前記第１アウターニードル部と前記第２アウターニードル部とは、溶接されている、インジェクタ。 The injector according to claim 1 or 2 .
The first outer needle portion and the second outer needle portion are welded injectors.
前記ニードルアッセンブリを前記ハウジングから取り出したとき、前記ストッパを前記可動コアから露出可能である、インジェクタ。 The injector according to any one of claims 1 to 3.
An injector capable of exposing the stopper from the movable core when the needle assembly is removed from the housing.
前記インナーニードルのシート面積は、前記アウターニードルのシート面積よりも小さい、インジェクタ。 The injector according to any one of claims 1 to 4.
An injector in which the seat area of the inner needle is smaller than the seat area of the outer needle.
前記第２噴口は、前記アウターニードルに設けられ、前記第１噴口に連通している、インジェクタ。 The injector according to any one of claims 1 to 5.
The second nozzle is an injector provided on the outer needle and communicating with the first nozzle.
前記第２噴口は、前記ハウジングに設けられている、インジェクタ。 The injector according to any one of claims 1 to 5.
The second nozzle is an injector provided in the housing.
前記流体は、気体である、インジェクタ。 The injector according to any one of claims 1 to 7.
The fluid is an injector, which is a gas.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019032314A JP7298184B2 (en) | 2019-02-26 | 2019-02-26 | injector |
| PCT/JP2020/003371 WO2020174993A1 (en) | 2019-02-26 | 2020-01-30 | Injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019032314A JP7298184B2 (en) | 2019-02-26 | 2019-02-26 | injector |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2020133594A JP2020133594A (en) | 2020-08-31 |
| JP2020133594A5 true JP2020133594A5 (en) | 2021-03-04 |
| JP7298184B2 JP7298184B2 (en) | 2023-06-27 |
Family
ID=72239394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019032314A Active JP7298184B2 (en) | 2019-02-26 | 2019-02-26 | injector |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7298184B2 (en) |
| WO (1) | WO2020174993A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4621683Y1 (en) * | 1966-10-19 | 1971-07-27 | ||
| JPH055471A (en) * | 1991-06-27 | 1993-01-14 | Hino Motors Ltd | Fuel injection nozzle |
| JP4597055B2 (en) | 2006-01-17 | 2010-12-15 | 日立造船株式会社 | Fuel injection device for internal combustion engine |
| CA2767247C (en) | 2012-02-07 | 2014-03-25 | Westport Power Inc. | Apparatus and method for igniting a gaseous fuel in a direct injection internal combustion engine |
| JP5874696B2 (en) | 2013-08-27 | 2016-03-02 | 株式会社日本自動車部品総合研究所 | Fuel injection valve |
| JP6428540B2 (en) | 2015-09-16 | 2018-11-28 | 株式会社デンソー | Fuel injection device |
| JP2018044513A (en) | 2016-09-16 | 2018-03-22 | 株式会社Ｓｏｋｅｎ | Control device |
-
2019
- 2019-02-26 JP JP2019032314A patent/JP7298184B2/en active Active
-
2020
- 2020-01-30 WO PCT/JP2020/003371 patent/WO2020174993A1/en active Application Filing
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