JPH046565U - - Google Patents
Info
- Publication number
- JPH046565U JPH046565U JP1990045464U JP4546490U JPH046565U JP H046565 U JPH046565 U JP H046565U JP 1990045464 U JP1990045464 U JP 1990045464U JP 4546490 U JP4546490 U JP 4546490U JP H046565 U JPH046565 U JP H046565U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- valve
- injection
- cylinder
- drive cam
- 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
- 239000000446 fuel Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
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概
略構成を説明するための模型図、第２図は第１図
に示した構成の作用を説明するための線図、第３
図は第１図に示した構成における別の作用を説明
するための線図、第４図は従来の燃料噴射装置の
一例を説明するための第１図相当の模型図、第５
図および第６図は第４図に示した燃料噴射装置の
特性をそれぞれ説明するため線図である。
１……燃料噴射ポンプ、１Ａ……プランジヤ、
２……駆動カム、２Ａ……作動片、３……燃料噴
射ノズル、３Ａ……開弁圧室、４……噴射管、４
Ａ……分岐した噴射管、５……シリンダ、６……
電磁弁、６Ａ……開閉弁、６Ｂ……電磁石、７…
…電磁弁の駆動回路、８……カムセンサ、８Ａ…
…アクチユエータ。
FIG. 1 is a model diagram for explaining the general structure of a fuel injection device according to an embodiment of the present invention, FIG. 2 is a diagram for explaining the operation of the structure shown in FIG. 1, and FIG.
The figure is a diagram for explaining another effect in the configuration shown in FIG. 1, FIG. 4 is a model diagram corresponding to FIG. 1 for explaining an example of a conventional fuel injection device, and FIG.
6 and 6 are diagrams for explaining the characteristics of the fuel injection device shown in FIG. 4, respectively. 1...Fuel injection pump, 1A...Plunger,
2... Drive cam, 2A... Operating piece, 3... Fuel injection nozzle, 3A... Valve opening pressure chamber, 4... Injection pipe, 4
A... Branched injection pipe, 5... Cylinder, 6...
Solenoid valve, 6A...Opening/closing valve, 6B...Electromagnet, 7...
...Solenoid valve drive circuit, 8...Cam sensor, 8A...
...actuator.
Claims (1)
噴射ノズルの針弁用開弁圧室とを連結している噴
射管の一部を分岐させた端部が接続されるととも
に、この接続部とは別の位置に燃料の還流部を有
し、上記燃料圧送用プランジヤがエンジン側のク
ランク軸の回転数の少なくとも２倍で回転駆動さ
れる駆動カムにより作動されるシリンダと、 上記シリンダ内で摺動自在に設けられていて、
摺動方向一端に上記燃料の還流部を開閉する弁を
備えたノーマルオープン形式の電磁弁とを備え、 上記電磁弁は、少なくとも上記駆動カムの２回
転に１回の割合で燃料の還流部を閉じる態位を設
定されることを特徴とする燃料噴射装置。[Scope of Claim for Utility Model Registration] A partially branched end of an injection pipe connecting an injection pump equipped with a plunger for pumping fuel and a valve opening pressure chamber for a needle valve of an injection nozzle is connected. , a cylinder having a fuel recirculation part at a position different from the connecting part, and in which the fuel pressure-feeding plunger is operated by a drive cam that is rotationally driven at at least twice the rotational speed of a crankshaft on the engine side; It is provided slidably within the cylinder,
a normally open type solenoid valve equipped with a valve for opening and closing the fuel recirculation section at one end in the sliding direction, and the solenoid valve opens the fuel recirculation section at least once every two rotations of the drive cam. A fuel injection device characterized in that it is set in a closed position.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990045464U JPH046565U (en) | 1990-04-27 | 1990-04-27 | |
| DE4190251A DE4190251C2 (en) | 1990-02-07 | 1991-02-07 | Fuel injection device with solenoid valve |
| KR1019910701265A KR950013543B1 (en) | 1990-02-07 | 1991-02-07 | Fuel injection device |
| DE19914190251 DE4190251T (en) | 1990-02-07 | 1991-02-07 | |
| PCT/JP1991/000148 WO1991012421A1 (en) | 1990-02-07 | 1991-02-07 | Fuel injection device |
| US07/768,616 US5271366A (en) | 1990-02-07 | 1991-02-07 | Fuel injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990045464U JPH046565U (en) | 1990-04-27 | 1990-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH046565U true JPH046565U (en) | 1992-01-21 |
Family
ID=31559664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990045464U Pending JPH046565U (en) | 1990-02-07 | 1990-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046565U (en) |
-
1990
- 1990-04-27 JP JP1990045464U patent/JPH046565U/ja active Pending
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