JPH03116768U - - Google Patents
Info
- Publication number
- JPH03116768U JPH03116768U JP2589490U JP2589490U JPH03116768U JP H03116768 U JPH03116768 U JP H03116768U JP 2589490 U JP2589490 U JP 2589490U JP 2589490 U JP2589490 U JP 2589490U JP H03116768 U JPH03116768 U JP H03116768U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- chamber
- downstream chamber
- fuel injection
- downstream
- 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 12
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
Landscapes
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion 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図はパルス信号を示す図
、第３図はマニホールド信号とエンジン回転数に
応じた燃料流量の変化を示す図、第４図はエンジ
ン回転数とスロツトル開度に基づくパルス信号補
正用のマツプである。
４……第二燃圧レギヤレータ、１３……第一ソ
レノイドバルブ、１４……第二ソレノイドバルブ
、１８……第四燃圧レギユレータ、２０……第二
燃圧室、２６……燃料噴射弁、２７……上流室、
２８……下流室、２９……ダイアフラム、３０…
…バルブ、ｄ１，ｄ２，ｄ３……差圧ジエツト、
ｅ１，ｅ２，ｅ３……計量ジエツト。
FIG. 1 is a schematic cross-sectional view showing an embodiment of the fuel injection device according to the present invention, FIG. 2 is a view showing pulse signals, and FIG. 3 is a view showing changes in fuel flow rate according to manifold signals and engine speed. , FIG. 4 is a map for pulse signal correction based on engine speed and throttle opening. 4...Second fuel pressure regulator, 13...First solenoid valve, 14...Second solenoid valve, 18...Fourth fuel pressure regulator, 20...Second fuel pressure chamber, 26...Fuel injection valve, 27... upstream room,
28...downstream chamber, 29...diaphragm, 30...
... Valve, d 1 , d 2 , d 3 ... Differential pressure jet,
e 1 , e 2 , e 3 ...Measuring jet.
Claims (1)
に応じ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、 ダイアフラムに仕切られた上流室及び吐出口を
有する下流室と、前記ダイアフラムに連動して吐
出口を開閉制御するバルブと、前記上流室と下流
室を連通して一定燃料流量を下流室へ流入させる
差圧ジエツトと前記下流室から燃料を流出させる
計量ジエツトとを有する燃料噴射弁を備えると共
に、前記計量ジエツトの下流側にインテークマニ
ホールド圧力とエンジン回転数に応じて変化する
調整燃圧を印加するようにしたことを特徴とする
燃料噴射装置。[Scope of Claim for Utility Model Registration] A fuel injection device that controls the fuel injection amount according to intake manifold pressure and engine speed, comprising: an upstream chamber partitioned by a diaphragm, a downstream chamber having a discharge port, and the diaphragm a valve that controls the opening and closing of the discharge port in conjunction with the flow rate; a differential pressure jet that communicates the upstream chamber and the downstream chamber to allow a constant flow of fuel to flow into the downstream chamber; and a metering jet that causes the fuel to flow out from the downstream chamber. What is claimed is: 1. A fuel injection device comprising an injection valve and applying an adjusted fuel pressure that varies depending on intake manifold pressure and engine rotational speed to the downstream side of the metering jet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2589490U JPH03116768U (en) | 1990-03-14 | 1990-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2589490U JPH03116768U (en) | 1990-03-14 | 1990-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03116768U true JPH03116768U (en) | 1991-12-03 |
Family
ID=31528812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2589490U Pending JPH03116768U (en) | 1990-03-14 | 1990-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03116768U (en) |
-
1990
- 1990-03-14 JP JP2589490U patent/JPH03116768U/ja active Pending