JPH03116767U - - Google Patents
Info
- Publication number
- JPH03116767U JPH03116767U JP2552690U JP2552690U JPH03116767U JP H03116767 U JPH03116767 U JP H03116767U JP 2552690 U JP2552690 U JP 2552690U JP 2552690 U JP2552690 U JP 2552690U JP H03116767 U JPH03116767 U JP H03116767U
- Authority
- JP
- Japan
- Prior art keywords
- fuel pressure
- fuel
- pressure chamber
- adjusted
- diaphragm
- 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 23
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案による燃圧レギユレータを備え
た燃料噴射装置の一実施例を示す概略断面図、第
２図は第一実施例の変形例を示す燃料噴射装置の
要部断面図、第３図は先行技術による燃料噴射装
置の概略断面図、第４図はパルス信号の波形を示
す図、第５図はマニホールド圧力とエンジン回転
数に応じた各燃料流量の変化を示す図である。
１７……第一燃圧室、１８……第二燃圧室、１
９……ダイアフラム、２３……燃料噴射弁、３１
……第四燃圧レギユレータ、ｆ……入口ジエツト
、３３……リターン通路、３３ａ……開口、３４
……リーク弁。
FIG. 1 is a schematic sectional view showing an embodiment of a fuel injection device equipped with a fuel pressure regulator according to the present invention, FIG. 2 is a sectional view of essential parts of a fuel injection device showing a modification of the first embodiment, and FIG. 3 4 is a diagram showing a waveform of a pulse signal, and FIG. 5 is a diagram showing changes in each fuel flow rate depending on manifold pressure and engine speed. 17...First fuel pressure chamber, 18...Second fuel pressure chamber, 1
9...Diaphragm, 23...Fuel injection valve, 31
... Fourth fuel pressure regulator, f ... Inlet jet, 33 ... Return passage, 33a ... Opening, 34
...Leak valve.
Claims (1)
圧が印加される第一燃圧室と調整燃圧が設定され
る第二燃圧室とがダイアフラムに仕切られている
燃圧レギユレータによつて、前記燃圧を調整燃圧
に変換し、該調整燃圧に基づいて燃料噴射量を制
御するようにした燃料噴射装置において、前記第
二燃圧室に燃料を供給する通路に設けられたジエ
ツトと、前記第二燃圧室から燃料をリークさせる
リターン通路と、前記ダイアフラムに連動してリ
ターン通路の開口の面積を増減させるリーク弁と
を備えたことを特徴とする燃圧レギユレータ。 The fuel pressure is converted into an adjusted fuel pressure by a fuel pressure regulator in which a diaphragm partitions a first fuel pressure chamber to which a fuel pressure corresponding to manifold pressure and engine speed is applied and a second fuel pressure chamber to which an adjusted fuel pressure is set. In the fuel injection device that controls the fuel injection amount based on the adjusted fuel pressure, the fuel is leaked from the jet provided in the passage for supplying fuel to the second fuel pressure chamber and the second fuel pressure chamber. A fuel pressure regulator comprising a return passage and a leak valve that increases or decreases the opening area of the return passage in conjunction with the diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2552690U JPH03116767U (en) | 1990-03-13 | 1990-03-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2552690U JPH03116767U (en) | 1990-03-13 | 1990-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03116767U true JPH03116767U (en) | 1991-12-03 |
Family
ID=31528458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2552690U Pending JPH03116767U (en) | 1990-03-13 | 1990-03-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03116767U (en) |
-
1990
- 1990-03-13 JP JP2552690U patent/JPH03116767U/ja active Pending
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