JPH0392565U - - Google Patents
Info
- Publication number
- JPH0392565U JPH0392565U JP214090U JP214090U JPH0392565U JP H0392565 U JPH0392565 U JP H0392565U JP 214090 U JP214090 U JP 214090U JP 214090 U JP214090 U JP 214090U JP H0392565 U JPH0392565 U JP H0392565U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- jet
- pressure
- flow rate
- 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 30
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第1図は本考案による多点式燃料噴射装置の一
実施例を示す要部断面図、第2図は先行技術によ
る多点式燃料噴射装置の概略断面図、第3図は燃
圧レギユレータのPQ特性を示す図である。
4……高圧側燃圧レギユレータ、10……燃料
噴射弁、11……定圧室、12……燃圧室、13
……ダイヤフラム、α1,α2,α3……第一ジ
エツト、β1,β2,β3……第二ジエツト、γ
……第三ジエツト、δ……第四ジエツト、20…
…ソレノイドバルブ、22……定圧側燃圧レギユ
レータ、28……定圧燃料通路、a……上流側ジ
エツト、b……下流側ジエツト、31……リター
ン燃料通路。
Fig. 1 is a sectional view of essential parts showing an embodiment of a multi-point fuel injection device according to the present invention, Fig. 2 is a schematic sectional view of a multi-point fuel injection device according to the prior art, and Fig. 3 is a PQ of a fuel pressure regulator. FIG. 3 is a diagram showing characteristics. 4... High pressure side fuel pressure regulator, 10... Fuel injection valve, 11... Constant pressure chamber, 12... Fuel pressure chamber, 13
... diaphragm, α 1 , α 2 , α 3 ... first jet, β 1 , β 2 , β 3 ... second jet, γ
...Third jet, δ...Fourth jet, 20...
... Solenoid valve, 22 ... Constant pressure side fuel pressure regulator, 28 ... Constant pressure fuel passage, a ... Upstream side jet, b ... Downstream side jet, 31 ... Return fuel passage.
Claims (1)
に連動して燃料室から要求燃料流量を噴射せしめ
る燃料噴射弁と、前記燃料室の上流側及び下流側
に夫々配設された第一ジエツト及び第二ジエツト
とを各気筒毎に備えると共に、該各第二ジエツト
の下流側に配設されている燃料リターン用ジエツ
トを通過する燃料流量を吸入空気流量に応じて制
御するソレノイドバルブと、前記各第一ジエツト
の上流側の燃圧を制御する高圧側燃圧レギユレー
タと、前記燃料リターン用ジエツトの下流側の燃
圧を制御する低圧側燃圧レギユレータと、該両燃
圧レギユレータを夫々上流側ジエツト及び下流側
ジエツトを介して連通すると共にその燃圧を前記
各定圧室へ印加する定圧燃料通路とを備えた多点
式燃料噴射装置において、 前記高圧側燃圧レギユレータのリターン流量を
低圧側燃圧レギユレータに導入するように構成し
たことを特徴とする多点式燃料噴射装置。[Scope of Claim for Utility Model Registration] A fuel injection valve that injects a required flow rate of fuel from a fuel chamber in conjunction with the displacement of a diaphragm that partitions a constant pressure chamber and a fuel chamber, and a fuel injection valve disposed on the upstream and downstream sides of the fuel chamber, respectively. A first jet and a second jet are provided for each cylinder, and the flow rate of fuel passing through a fuel return jet disposed downstream of each second jet is controlled in accordance with the flow rate of intake air. a solenoid valve, a high pressure side fuel pressure regulator that controls the fuel pressure on the upstream side of each of the first jets, a low pressure side fuel pressure regulator that controls the fuel pressure on the downstream side of the fuel return jet, and both fuel pressure regulators on the upstream side, respectively. In the multi-point fuel injection device, the fuel injection device is equipped with a constant pressure fuel passage communicating through a jet and a downstream jet and applying the fuel pressure to each of the constant pressure chambers, the return flow rate of the high pressure side fuel pressure regulator being transferred to the low pressure side fuel pressure regulator. A multi-point fuel injection device characterized by being configured to be introduced into the system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP214090U JPH0392565U (en) | 1990-01-12 | 1990-01-12 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP214090U JPH0392565U (en) | 1990-01-12 | 1990-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0392565U true JPH0392565U (en) | 1991-09-20 |
Family
ID=31506019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP214090U Pending JPH0392565U (en) | 1990-01-12 | 1990-01-12 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0392565U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008173082A (en) * | 2007-01-22 | 2008-07-31 | Daiwa Seiko Inc | Connecting device of lure for fishing cuttlefish |
-
1990
- 1990-01-12 JP JP214090U patent/JPH0392565U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008173082A (en) * | 2007-01-22 | 2008-07-31 | Daiwa Seiko Inc | Connecting device of lure for fishing cuttlefish |