JPH03119563U - - Google Patents
Info
- Publication number
- JPH03119563U JPH03119563U JP2941890U JP2941890U JPH03119563U JP H03119563 U JPH03119563 U JP H03119563U JP 2941890 U JP2941890 U JP 2941890U JP 2941890 U JP2941890 U JP 2941890U JP H03119563 U JPH03119563 U JP H03119563U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- chamber
- fuel
- fuel injection
- pressurizing chamber
- 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
- 239000000446 fuel Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案実施例による燃料噴射装置の主
要部の構成を示す模式的な構成図、第２図は第１
図に示した主要部の作用を説明するための第１図
相当の構成図、第３図は第１図に示した主要部の
作用を説明するための線図である。
１……燃料噴射装置、２……第１の加圧室、３
……噴射ポンプ側からの燃料供給路、５……第１
のピストン、６……連通路、７……第２の加圧室
、８……第２のピストン、９……針弁、１１……
開弁圧室、１２……燃料圧送路、１２Ａ……第１
のポート、１２Ｂ……第２のポート。
FIG. 1 is a schematic configuration diagram showing the configuration of the main parts of a fuel injection device according to an embodiment of the present invention, and FIG.
FIG. 3 is a block diagram corresponding to FIG. 1 for explaining the functions of the main parts shown in FIG. 1, and FIG. 3 is a diagram for explaining the functions of the main parts shown in FIG. 1... Fuel injection device, 2... First pressurizing chamber, 3
...Fuel supply path from the injection pump side, 5...1st
piston, 6... communicating path, 7... second pressurizing chamber, 8... second piston, 9... needle valve, 11...
Valve opening pressure chamber, 12... fuel pressure feed path, 12A... first
port, 12B... second port.
Claims (1)
いる第１の加圧室と、 上記第１の加圧室に連通する第２の加圧室と、 上記第１の加圧室と針弁の開弁圧室にそれぞれ
接続され、上記第１の加圧室側で開口する第１の
ポートと、開弁圧室に向かう途中で上記第１の加
圧室と第２の加圧室との連通部に向け分岐して接
続された第２のポートとを有する燃料圧送路と、 上記第１の加圧室内に配置され、常時、上記燃
料噴射ポンプからの燃料の圧力に対抗する向きに
付勢されている摺動可能な第１のピストンと、 上記第２の加圧室内に配置され、針弁の開弁圧
を設定するための付勢手段を備えている第２のピ
ストンとで構成された燃料噴射ノズルを備えてい
ることを特徴とする燃料噴射装置。[Claims for Utility Model Registration] A first pressurizing chamber to which a fuel supply path from a fuel injection pump is connected; a second pressurizing chamber communicating with the first pressurizing chamber; and the first pressurizing chamber. a first port that is connected to the pressure chamber of the needle valve and the valve opening pressure chamber of the needle valve and opens on the first pressure chamber side; a fuel pressure feed line having a second port branched and connected to a communication portion with the second pressurization chamber; and a fuel pressure feed path disposed within the first pressurization chamber, which always receives fuel from the fuel injection pump. a slidable first piston biased in a direction opposed to the pressure of the pressure, and a biasing means disposed within the second pressurizing chamber for setting the opening pressure of the needle valve. A fuel injection device comprising a fuel injection nozzle configured with a second piston and a second piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2941890U JP2503653Y2 (en) | 1990-03-22 | 1990-03-22 | Fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2941890U JP2503653Y2 (en) | 1990-03-22 | 1990-03-22 | Fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03119563U true JPH03119563U (en) | 1991-12-10 |
| JP2503653Y2 JP2503653Y2 (en) | 1996-07-03 |
Family
ID=31532175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2941890U Expired - Lifetime JP2503653Y2 (en) | 1990-03-22 | 1990-03-22 | Fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503653Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002048027A (en) * | 2000-07-10 | 2002-02-15 | Robert Bosch Gmbh | Injector-nozzle needle-combination having control chamber side connecting mechanism |
-
1990
- 1990-03-22 JP JP2941890U patent/JP2503653Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002048027A (en) * | 2000-07-10 | 2002-02-15 | Robert Bosch Gmbh | Injector-nozzle needle-combination having control chamber side connecting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2503653Y2 (en) | 1996-07-03 |
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