JPH0414766U - - Google Patents
Info
- Publication number
- JPH0414766U JPH0414766U JP5587790U JP5587790U JPH0414766U JP H0414766 U JPH0414766 U JP H0414766U JP 5587790 U JP5587790 U JP 5587790U JP 5587790 U JP5587790 U JP 5587790U JP H0414766 U JPH0414766 U JP H0414766U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- pressure
- constant flow
- fuel injection
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 230000009849 deactivation Effects 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案による燃料噴射装置の一実施例
を示す概略断面図、第２図は先行技術による燃料
噴射装置の概略断面図、第３図は第一燃圧レギユ
レータにおけるインテークマニホールド圧力と燃
圧Ｐ１との関係を示す図、第４図はエンジン回転
数に応じたパルス信号の周期を示す図、第５図は
インテークマニホールド圧力とエンジン回転数に
応じた調整燃圧Ｐ４を示す図、第６図は調整燃圧
Ｐ４と上流室の燃圧Ｐ５との関係を示す図、第７
図は差圧Ｐ１−Ｐ５と各燃料流量との関係を示す
図である。
１６……第三燃圧レギユレータ、２２，２２−
１，２２−２，２２−３，２２−４……燃料噴射
弁、２３……定流量リターン通路、２４……計量
ジエツト、２５……上流室、２５ａ……吐出口、
２６……下流室、２７……ダイアフラム、２８…
…差圧ジエツト、２９……バルブ、３５……開閉
ソレノイド。
FIG. 1 is a schematic sectional view showing an embodiment of a fuel injection device according to the present invention, FIG. 2 is a schematic sectional view of a fuel injection device according to the prior art, and FIG. 3 is a diagram showing the intake manifold pressure and fuel pressure P in the first fuel pressure regulator. Figure 4 is a diagram showing the period of the pulse signal according to the engine rotation speed, Figure 5 is a diagram showing the intake manifold pressure and the adjusted fuel pressure P4 according to the engine rotation speed, and Figure 6 is a diagram showing the relationship between the intake manifold pressure and the engine rotation speed. The figure shows the relationship between the adjusted fuel pressure P4 and the fuel pressure P5 in the upstream chamber.
The figure is a diagram showing the relationship between the differential pressure P 1 -P 5 and each fuel flow rate. 16...Third fuel pressure regulator, 22, 22-
1, 22-2, 22-3, 22-4... fuel injection valve, 23... constant flow return passage, 24... metering jet, 25... upstream chamber, 25a... discharge port,
26...downstream chamber, 27...diaphragm, 28...
...differential pressure jet, 29...valve, 35...opening/closing solenoid.
Claims (1)
とに応じた調整燃圧を発生させる燃圧レギユレー
タと、 計量ジエツトを介して定圧燃料が流入すると共
に燃料の吐出口を備えた上流室と、前記調整燃圧
が印加され且つ差圧ジエツトを介して上流室に連
通すると共に一定流量がリターンされる下流室と
、前記上流室と、下流室を仕切ると共に吐出口を
開閉し得るバルブを連動せしめるダイアフラムと
を有する、各気筒毎に配置された燃料噴射弁と、 前記燃圧レギユレータと各燃料噴射弁とを連通
する定流量リターン通路とを備えた燃料噴射装置
において、 前記定流量リターン通路を閉鎖して一部の燃料
噴射弁の下流室からの一定流量の流出を停止させ
る噴射停止手段を設けたことを特徴とする気筒休
止機構。[Scope of Claim for Utility Model Registration] A fuel pressure regulator that generates a fuel pressure adjusted according to intake manifold pressure and engine speed; an upstream chamber into which constant-pressure fuel flows through a metering jet and equipped with a fuel discharge port; a downstream chamber to which the adjusted fuel pressure is applied and which communicates with the upstream chamber via a differential pressure jet and returns a constant flow rate; a diaphragm that partitions the upstream chamber and the downstream chamber and interlocks a valve capable of opening and closing the discharge port; A fuel injection device comprising: a fuel injection valve arranged for each cylinder; and a constant flow return passage communicating between the fuel pressure regulator and each fuel injection valve, the constant flow return passage being closed. A cylinder deactivation mechanism characterized by being provided with an injection stop means for stopping a constant flow rate from flowing out from a downstream chamber of some fuel injection valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5587790U JPH0414766U (en) | 1990-05-30 | 1990-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5587790U JPH0414766U (en) | 1990-05-30 | 1990-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0414766U true JPH0414766U (en) | 1992-02-06 |
Family
ID=31579214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5587790U Pending JPH0414766U (en) | 1990-05-30 | 1990-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0414766U (en) |
-
1990
- 1990-05-30 JP JP5587790U patent/JPH0414766U/ja active Pending