JPS59156169U - fuel injection control device - Google Patents
fuel injection control deviceInfo
- Publication number
- JPS59156169U JPS59156169U JP5045283U JP5045283U JPS59156169U JP S59156169 U JPS59156169 U JP S59156169U JP 5045283 U JP5045283 U JP 5045283U JP 5045283 U JP5045283 U JP 5045283U JP S59156169 U JPS59156169 U JP S59156169U
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- valve
- control device
- injection control
- fuel injection
- 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.)
- Pending
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来装置のユニットインジェクタの縦断面図、
第２図は第１図の要部断面図、第３図は電磁弁の駆動電
圧に対する弁リフト特性及び噴射圧力特性を示す説明図
、第４図は電流印加期間Ｔに対する実弁作動期間を及び
噴射流量特性Ｑを示す説明図、第５図は本考案の第１実
施例の概略構成図、第６図は第５図の要部拡大断面図で
ある。
３・・・シリンダ、４・・・プランジャ、７・・・圧力
室、 １０・・・ノズル、９ａ、 ＄ｂ・・・燃
料供給通路、３５・・・電磁弁、３７・・・弁体、３７
ａ・・・シート部、４１・・・シリンダ、４０・・・バ
ランスピストン、４２・・・室。Figure 1 is a vertical cross-sectional view of a unit injector of a conventional device.
Fig. 2 is a sectional view of the main part of Fig. 1, Fig. 3 is an explanatory diagram showing the valve lift characteristics and injection pressure characteristics with respect to the driving voltage of the solenoid valve, and Fig. 4 shows the actual valve operation period with respect to the current application period T. An explanatory diagram showing the injection flow rate characteristic Q, FIG. 5 is a schematic configuration diagram of the first embodiment of the present invention, and FIG. 6 is an enlarged sectional view of the main part of FIG. 5. 3... Cylinder, 4... Plunger, 7... Pressure chamber, 10... Nozzle, 9a, $b... Fuel supply passage, 35... Solenoid valve, 37... Valve body, 37
a... Seat portion, 41... Cylinder, 40... Balance piston, 42... Chamber.
Claims (1)
ャの一端に臨んで形成される圧力室と、圧力室と連通し
所定圧以上で開弁するノズルと、圧力室に連通ずる燃料
供給通路に介装され、機関の運転状態に応じて高圧燃料
を逃がす弁装置とを備えた燃料噴射制御装置において、
弁装置の弁体はシート部から圧力室側に移動して開弁す
るとともに、圧力室側に臨んで配設されるシリンダを摺
動し、弁体のシート径とほぼ同一の径を有するバランス
ピストンを弁体と一体に設け、シリンダとバランスピス
トンで区画形成される室を、シート部下流の低圧側と連
通させたことを特徴とする燃料噴射制御装置。A plunger that reciprocates in synchronization with the engine, a pressure chamber formed facing one end of the plunger, a nozzle that communicates with the pressure chamber and opens at a predetermined pressure or higher, and a fuel supply passage that communicates with the pressure chamber. In a fuel injection control device equipped with a valve device that releases high-pressure fuel according to the operating state of the engine,
The valve element of the valve device moves from the seat part to the pressure chamber side to open the valve, and at the same time slides on a cylinder arranged facing the pressure chamber side, a balance having a diameter almost the same as the seat diameter of the valve element is moved. A fuel injection control device characterized in that a piston is provided integrally with a valve body, and a chamber defined by a cylinder and a balance piston is communicated with a low pressure side downstream of a seat portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5045283U JPS59156169U (en) | 1983-04-05 | 1983-04-05 | fuel injection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5045283U JPS59156169U (en) | 1983-04-05 | 1983-04-05 | fuel injection control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59156169U true JPS59156169U (en) | 1984-10-19 |
Family
ID=30180910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5045283U Pending JPS59156169U (en) | 1983-04-05 | 1983-04-05 | fuel injection control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59156169U (en) |
-
1983
- 1983-04-05 JP JP5045283U patent/JPS59156169U/en active Pending
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