JP2002242800A - Method and device for inspecting performance of nozzle - Google Patents
Method and device for inspecting performance of nozzleInfo
- Publication number
- JP2002242800A JP2002242800A JP2001038466A JP2001038466A JP2002242800A JP 2002242800 A JP2002242800 A JP 2002242800A JP 2001038466 A JP2001038466 A JP 2001038466A JP 2001038466 A JP2001038466 A JP 2001038466A JP 2002242800 A JP2002242800 A JP 2002242800A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- negative pressure
- performance
- liquid
- leak
- 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.)
- Granted
Links
Landscapes
- Testing Of Engines (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車用内燃機関
に燃料を噴射するノズルの性能検査方法及び装置に関
し、特にノズルの性能計測前に行うノズルのランニング
運転を改良したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for inspecting the performance of a nozzle for injecting fuel into an internal combustion engine for an automobile, and more particularly to an improvement in the running operation of the nozzle performed before measuring the performance of the nozzle.
【０００２】[0002]
【従来の技術】従来の自動車用内燃機関に燃料を噴射す
るノズルの性能検査方法におけるノズルのランニング運
転は、図２に示されるように、ワーク保持部２に保持さ
れたノズル９の入口側が高圧の液体を供給する液体供給
部３に、ノズル９のリーク側が加圧部６に接続してい
て、入口側に高圧の液体を供給し、ノズルのリーク側を
加圧してノズル９を作動させていた。しかし、ノズルの
構造によっては従来のランニング運転では、ノズル内部
に残っていた気体をなかなか除去することができず、ノ
ズルの性能を安定化させるためには９分間以上ランニン
グ運転が必要で、ノズルの性能検査のために時間がかか
るという問題があった。また、その結果ランニング運転
用の装置が大きくなり費用がかかるという問題もあっ
た。2. Description of the Related Art As shown in FIG. 2, in a conventional method of inspecting the performance of a nozzle for injecting fuel into an internal combustion engine for a vehicle, a running operation of the nozzle is performed as shown in FIG. The leak side of the nozzle 9 is connected to the pressurizing unit 6 to the liquid supply unit 3 that supplies the liquid, and the high-pressure liquid is supplied to the inlet side, and the nozzle 9 is operated by pressurizing the leak side of the nozzle. Was. However, depending on the structure of the nozzle, in the conventional running operation, the gas remaining inside the nozzle cannot be easily removed, and the running operation is required for 9 minutes or more to stabilize the performance of the nozzle. There is a problem that it takes time for the performance inspection. Further, as a result, there is also a problem that a device for the running operation becomes large and costly.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記問題に
鑑みなされたもので、その目的は、短時間にノズルの性
能を安定化でき、ランニング時間の短縮と装置費用を低
減できるノズルの性能検査方法及びその装置を提供する
ことである。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to improve the performance of a nozzle capable of stabilizing the performance of the nozzle in a short time, shortening the running time and reducing the equipment cost. An inspection method and an apparatus therefor are provided.
【０００４】[0004]
【課題を解決するための手段】本発明は、前記課題を解
決するための手段として、特許請求の範囲の各請求項に
記載のノズルの性能検査方法及び装置を提供する。請求
項１に記載のノズルの性能検査方法は、ノズルの性能を
計測する前に行うランニング運転において、ノズルの入
口側もしくはリーク側を負圧にして維持した後に、ノズ
ルのリーク側を加圧し、次いでノズルの入口側に高圧の
液体を供給し、ノズルを間欠運転するようにしたもので
ある。これにより、ノズルの入口側もしくはリーク側を
負圧にすることで、ノズル内部に残っていた気体が入口
側もしくはリーク側から負圧部を通って除去することが
でき、ノズル内部を液体で充填できるようになり、短時
間のランニング運転でノズルの性能を安定化できる。The present invention provides a method and apparatus for inspecting the performance of a nozzle according to the present invention as means for solving the above-mentioned problems. The performance inspection method of the nozzle according to claim 1, in a running operation performed before measuring the performance of the nozzle, after maintaining a negative pressure on the inlet side or the leak side of the nozzle, pressurize the leak side of the nozzle, Next, a high-pressure liquid is supplied to the inlet side of the nozzle, and the nozzle is operated intermittently. By setting the inlet side or leak side of the nozzle to a negative pressure, gas remaining inside the nozzle can be removed from the inlet side or the leak side through the negative pressure portion, and the inside of the nozzle is filled with liquid. And the performance of the nozzle can be stabilized by a short running operation.
【０００５】請求項２に記載のノズルの性能検査装置
は、請求項１の方法発明を装置発明にしたものであり、
その作用効果は、請求項１の発明と基本的に同様であ
る。請求項３のノズルの性能検査装置は、ノズルのリー
ク側を負圧にする負圧部をエジェクタにしたものであ
り、これにより、ランニング運転の液体が負圧部に吸引
されても、負圧部が故障したり作動不良になることが防
止できる。[0005] A nozzle performance inspection apparatus according to a second aspect of the present invention is an apparatus invention according to the first aspect of the invention.
The operation and effect are basically the same as those of the first aspect. According to a third aspect of the present invention, there is provided a nozzle performance inspecting apparatus in which a negative pressure portion for making a negative pressure on the leak side of the nozzle is an ejector. It is possible to prevent parts from malfunctioning or malfunctioning.
【０００６】[0006]
【発明の実施の形態】以下、図１に基づき、本発明の実
施の形態のノズルの性能検査方法及びその装置について
説明する。図１は、本発明のノズルの性能検査装置１の
全体の概略構成を示している。被検査物であるノズル９
は、ワーク保持部２に保持され、ノズル９の入口側は、
高圧バルブ１０を介して高圧液体を供給する液体供給部
３に接続している。ノズル９のリーク側は、リーク側を
加圧する加圧部６を介してタンク８に接続していると共
に、加圧部６の上流側で分岐して負圧バルブ７を介して
負圧部５、更にはタンク８へと接続している。ノズル９
のリーク側を加圧する加圧部６は、逆止弁６１とリリー
フ弁６２とから構成されており、ノズル９のリーク側を
負圧する負圧部５は、負圧を発生させるエジェクタ５１
と、このエジェクタ５１への高圧空気の供給を開閉する
バルブ５２と、エジェクタ５１に高圧空気を供給する空
気供給部５３とから構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A nozzle performance inspection method and apparatus according to an embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows an overall schematic configuration of a nozzle performance inspection apparatus 1 of the present invention. Nozzle 9 to be inspected
Is held by the work holding unit 2, and the inlet side of the nozzle 9 is
It is connected to a liquid supply unit 3 for supplying a high-pressure liquid via a high-pressure valve 10. The leak side of the nozzle 9 is connected to the tank 8 via a pressurizing section 6 for pressurizing the leak side, and branches off at the upstream side of the pressurizing section 6 to form a negative pressure section 5 via a negative pressure valve 7. , And further to a tank 8. Nozzle 9
The pressurizing section 6 for pressurizing the leak side of the nozzle 9 comprises a check valve 61 and a relief valve 62, and the negative pressure section 5 for negatively applying pressure to the leak side of the nozzle 9 is provided by an ejector 51 for generating a negative pressure.
And a valve 52 for opening and closing the supply of high-pressure air to the ejector 51, and an air supply unit 53 for supplying high-pressure air to the ejector 51.
【０００７】ノズル９は、その作動停止を制御する制御
部４に接続する。また、ノズル９を保持するワーク保持
部２は、タンク８に接続しており、ノズル９の吐出側か
ら吐出した液体をタンク８で回収している。タンク８
は、ノズル９のリーク側から出た液体も回収している。[0007] The nozzle 9 is connected to the control unit 4 for controlling the operation stop. Further, the work holding unit 2 holding the nozzle 9 is connected to the tank 8, and collects the liquid discharged from the discharge side of the nozzle 9 in the tank 8. Tank 8
Collects the liquid that has come out from the leak side of the nozzle 9.
【０００８】上記のように構成された本発明のノズルの
性能検査装置の作動、即ち性能検査方法について説明す
る。まず、検査されるノズル９をワーク保持部２に取り
付け固定する。次に、ノズル９に液体供給部３からの配
管と、制御部４からの配線と、負圧部５及び加圧部６か
らの配管を接続する。この状態で、負圧バルブ７及びバ
ルブ５２を開け、空気供給部５３を作動させ、ノズル９
のリーク側を５秒以上負圧にした後、負圧バルブ７を閉
じる。同時にバルブ５２も閉じ、空気供給部５３も作動
を停止する。The operation of the apparatus for inspecting performance of a nozzle according to the present invention constructed as described above, that is, a performance inspection method will be described. First, the nozzle 9 to be inspected is attached and fixed to the work holding unit 2. Next, the piping from the liquid supply unit 3, the wiring from the control unit 4, and the piping from the negative pressure unit 5 and the pressure unit 6 are connected to the nozzle 9. In this state, the negative pressure valve 7 and the valve 52 are opened, the air supply unit 53 is operated, and the nozzle 9
The negative pressure valve 7 is closed after a negative pressure is applied to the leak side for 5 seconds or more. At the same time, the valve 52 is closed, and the operation of the air supply unit 53 is stopped.
【０００９】次いで、高圧バルブ１０を開けて液体供給
部３から高圧液体を供給し、制御部４でノズル９を作動
させ、加圧部６でノズルのリーク側を１００kPa に加圧
した状態で、ノズル９から液体を４分間噴出させること
により、ノズル９の性能特性を安定化させるものであ
る。このように、所定時間ノズルのリーク側を負圧した
後に加圧液体を噴出することにより噴出時間を従来９分
かかっていたランニング時間を４分と半減以下に短縮で
きる。また、負圧部にエジェクタを採用したことで、負
圧部が液体を吸引しても負圧部が故障したり、作動不良
になることが防止できる。なお、上述の説明では、一般
的ノズルの性能検査装置及び方法で説明しているが、本
発明は、自動車用内燃機関の燃料噴射ノズルの性能検査
に好適なものである。また、負圧を発生させる配管は、
リーク側に限定されるものではなく、液体供給側の配管
に接続してもよい。但し、その場合は、高圧バルブも追
加する必要がある。Next, the high-pressure valve 10 is opened to supply high-pressure liquid from the liquid supply unit 3, the control unit 4 operates the nozzle 9, and the pressurizing unit 6 pressurizes the leak side of the nozzle to 100 kPa. By ejecting the liquid from the nozzle 9 for 4 minutes, the performance characteristics of the nozzle 9 are stabilized. In this way, by ejecting the pressurized liquid after applying a negative pressure to the leak side of the nozzle for a predetermined time, the ejection time can be reduced from a conventional 9 minutes running time to 4 minutes or less by half. Further, by employing the ejector for the negative pressure section, it is possible to prevent the negative pressure section from breaking down or malfunctioning even if the negative pressure section sucks the liquid. In the above description, a general nozzle performance inspection apparatus and method have been described, but the present invention is suitable for performance inspection of a fuel injection nozzle of an internal combustion engine for an automobile. Also, the piping that generates negative pressure
It is not limited to the leak side, and may be connected to a pipe on the liquid supply side. However, in that case, it is necessary to add a high-pressure valve.
【００１０】以上説明したように本発明のノズルの性能
検査方法及び装置では、検査始めに負圧部によりノズル
のリーク側を負圧することで、ノズル内部に残っていた
気体をリーク側から負圧部を経て速やかに除去すること
ができ、ノズル内部を液体で充填できるようになり、短
時間にノズルの性能を安定化でき、ランニング時間の短
縮と装置費用を低減できるものである。As described above, in the method and apparatus for inspecting the performance of a nozzle according to the present invention, the negative pressure is applied to the leak side of the nozzle by the negative pressure section at the beginning of the test, so that the gas remaining inside the nozzle is negatively pressured from the leak side. The nozzle can be quickly removed through the section, the inside of the nozzle can be filled with the liquid, the performance of the nozzle can be stabilized in a short time, the running time can be reduced, and the equipment cost can be reduced.
【図１】本発明の実施の形態のノズルの性能検査装置の
全体の概略構成を説明する図である。FIG. 1 is a diagram illustrating an overall schematic configuration of a nozzle performance inspection apparatus according to an embodiment of the present invention.
【図２】従来のノズルの性能検査装置の全体の概略構成
を説明する図である。FIG. 2 is a diagram illustrating the general schematic configuration of a conventional nozzle performance inspection device.
２…ワーク保持部 ３…液体供給部 ４…制御部 ５…負圧部 ５１…エジェクタ ６…加圧部 ７…負圧バルブ ８…タンク ９…ノズル 2 ... Work holding part 3 ... Liquid supply part 4 ... Control part 5 ... Negative pressure part 51 ... Ejector 6 ... Pressure part 7 ... Negative pressure valve 8 ... Tank 9 ... Nozzle
Claims (3)
前に行うランニング運転を改良したノズルの性能検査方
法において、 少なくとも、ノズルの入口側もしくはリーク側を負圧に
し、これを維持した後に、 ノズルのリーク側を加圧し、 次いで、ノズルの入口側に液体供給部から高圧の液体を
供給し、 ノズルを間欠運転することを特徴とするノズルの性能検
査方法。1. A nozzle performance inspection method in which a running operation performed before measuring the performance of a nozzle for discharging a liquid is improved, wherein at least the inlet side or the leak side of the nozzle is set to a negative pressure, and after maintaining this, A nozzle performance inspection method comprising pressurizing a leak side of a nozzle, and then supplying a high-pressure liquid from a liquid supply unit to an inlet side of the nozzle, and intermittently operating the nozzle.
ノズルの性能検査装置において、この装置が、 ノズルの高圧液体を供給する液体供給部と、 ノズルの入口側もしくはリーク側を負圧する負圧部と、 ノズルのリーク側を加圧する加圧部と、 ノズルを作動させる制御部と、から構成されることを特
徴とするノズルの性能検査装置。2. A nozzle performance inspection device for measuring the performance of a nozzle that discharges a liquid, the device comprising: a liquid supply unit that supplies a high-pressure liquid from the nozzle; and a negative pressure that applies a negative pressure to an inlet side or a leak side of the nozzle. A nozzle performance inspection device, comprising: a pressure unit that pressurizes a leak side of the nozzle; and a control unit that operates the nozzle.
とを特徴とする請求項１に記載のノズルの性能検査装
置。3. The nozzle performance inspection apparatus according to claim 1, wherein the negative pressure unit includes an ejector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001038466A JP4239418B2 (en) | 2001-02-15 | 2001-02-15 | Nozzle performance inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001038466A JP4239418B2 (en) | 2001-02-15 | 2001-02-15 | Nozzle performance inspection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002242800A true JP2002242800A (en) | 2002-08-28 |
| JP4239418B2 JP4239418B2 (en) | 2009-03-18 |
Family
ID=18901433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001038466A Expired - Fee Related JP4239418B2 (en) | 2001-02-15 | 2001-02-15 | Nozzle performance inspection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4239418B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007321668A (en) * | 2006-06-01 | 2007-12-13 | Denso Corp | Method for pumping fuel into fuel injection valve |
-
2001
- 2001-02-15 JP JP2001038466A patent/JP4239418B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007321668A (en) * | 2006-06-01 | 2007-12-13 | Denso Corp | Method for pumping fuel into fuel injection valve |
| JP4613882B2 (en) * | 2006-06-01 | 2011-01-19 | 株式会社デンソー | Method for injecting fuel into a fuel injection valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4239418B2 (en) | 2009-03-18 |
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