JPH0294369U - - Google Patents
Info
- Publication number
- JPH0294369U JPH0294369U JP149689U JP149689U JPH0294369U JP H0294369 U JPH0294369 U JP H0294369U JP 149689 U JP149689 U JP 149689U JP 149689 U JP149689 U JP 149689U JP H0294369 U JPH0294369 U JP H0294369U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- flow rate
- diaphragm
- jet
- upstream 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 20
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案による多点燃料噴射装置の一実
施例を示す概略断面図、第２図は第一ジエツトに
おける圧力損失と空気流量の関係を示す図、第３
図は従来装置の概略断面図である。
１……燃料計量手段、１０……一定流量供給手
段、１１……第一ジエツト、１２……燃料噴射弁
、１３……上流室、１４……下流室、１５……ダ
イアフラム、１６……第二ジエツト、１７……バ
ルブ、１９……レギユレータ。
Fig. 1 is a schematic sectional view showing an embodiment of a multi-point fuel injection device according to the present invention, Fig. 2 is a diagram showing the relationship between pressure loss and air flow rate in the first jet, and Fig. 3 is a diagram showing the relationship between pressure loss and air flow rate in the first jet.
The figure is a schematic cross-sectional view of a conventional device. DESCRIPTION OF SYMBOLS 1...Fuel metering means, 10...Constant flow supply means, 11...First jet, 12...Fuel injection valve, 13...Upstream chamber, 14...Downstream chamber, 15...Diaphragm, 16...No. 2 jets, 17...valve, 19...regulator.
Claims (1)
で一定流量として送り出され、各気筒毎に分配さ
れて各第一ジエツトを通つて各燃料噴射弁の上流
室に送り込まれ、更に第二ジエツトを介してダイ
アフラムによつて前記上流室と仕切られた下流室
に送られ、レギユレータを介して燃料供給源へ戻
される第一流路と、 該流路から上流室で分岐され、前記ダイアフラ
ムに連動するバルブによつて前記上流室から燃料
流量が吐出される第二流路と、 空気流量に応じた燃料流量が計量され、前記一
定流量供給手段と第一ジエツトの間で第一流路に
供給せしめる単一の燃料計量手段と、 から成つていて、該燃料計量手段から供給される
燃料流量に応じて前記上流室から吐出される燃料
流量が制御されるようにした多点燃料噴射装置。 (2) 前記燃料噴射弁は、ダイアフラムによつて
仕切られた吐出口を有する上流室及び下流室と、
前記ダイアフラムに連結されていて吐出口を開閉
し得る前記バルブと、該バルブの閉弁方向に前記
ダイアフラムを弾圧するスプリングとから成つて
いることを特徴とする、実用新案登録請求の範囲
(1)に記載の多点燃料噴射装置。[Scope of Claim for Utility Model Registration] (1) Fuel from a fuel supply source is delivered at a constant flow rate by a constant flow supply means, distributed to each cylinder, and passed through each first jet to the upstream chamber of each fuel injection valve. a first flow path through which the fuel is sent to the fuel supply source through a second jet, and further sent through a second jet to a downstream chamber separated from the upstream chamber by a diaphragm, and returned to the fuel supply source through a regulator; a second flow path which is branched and through which a fuel flow rate is discharged from the upstream chamber by a valve interlocked with the diaphragm; and a fuel flow path in which the fuel flow rate is measured in accordance with the air flow rate, and which is connected between the constant flow rate supply means and the first jet. a single fuel metering means for supplying the fuel to the first flow path, and the fuel flow rate discharged from the upstream chamber is controlled according to the fuel flow rate supplied from the fuel metering means. Multipoint fuel injection system. (2) The fuel injection valve includes an upstream chamber and a downstream chamber having a discharge port partitioned by a diaphragm;
Claims for registration of a utility model characterized in that the utility model comprises the valve connected to the diaphragm and capable of opening and closing the discharge port, and a spring that presses the diaphragm in the direction of closing the valve.
The multi-point fuel injection device according to (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP149689U JP2514788Y2 (en) | 1989-01-10 | 1989-01-10 | Multi-point fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP149689U JP2514788Y2 (en) | 1989-01-10 | 1989-01-10 | Multi-point fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0294369U true JPH0294369U (en) | 1990-07-26 |
| JP2514788Y2 JP2514788Y2 (en) | 1996-10-23 |
Family
ID=31201431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP149689U Expired - Lifetime JP2514788Y2 (en) | 1989-01-10 | 1989-01-10 | Multi-point fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514788Y2 (en) |
-
1989
- 1989-01-10 JP JP149689U patent/JP2514788Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2514788Y2 (en) | 1996-10-23 |
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