JPS6284669U - - Google Patents
Info
- Publication number
- JPS6284669U JPS6284669U JP17558885U JP17558885U JPS6284669U JP S6284669 U JPS6284669 U JP S6284669U JP 17558885 U JP17558885 U JP 17558885U JP 17558885 U JP17558885 U JP 17558885U JP S6284669 U JPS6284669 U JP S6284669U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- valve
- check valve
- suction
- orifice
- 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 11
- 238000002347 injection Methods 0.000 claims 3
- 239000007924 injection Substances 0.000 claims 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案の一実施例の縦断面図、第２
図はその―断面図、第３図は燃料吸戻特性を
示す特性図である。第４図は従来例の縦断面図で
ある。
１……燃料吐出弁の本体、４……コイルスプリ
ング、５……逆止弁、６……燃料通路部、８……
コイルスプリング、９……等圧弁、１０……入口
通路、１１……出口通路、１２……高圧燃料通路
、１４……逆止弁の弁体、１５……吸戻カラー部
、１６……アングライヒカツト、１７……オリフ
イス。
Figure 1 is a longitudinal sectional view of one embodiment of this invention;
The figure is a sectional view thereof, and FIG. 3 is a characteristic diagram showing fuel suction characteristics. FIG. 4 is a longitudinal sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1... Main body of fuel discharge valve, 4... Coil spring, 5... Check valve, 6... Fuel passage section, 8...
Coil spring, 9... Equal pressure valve, 10... Inlet passage, 11... Outlet passage, 12... High pressure fuel passage, 14... Valve body of check valve, 15... Suction collar portion, 16... Underground Ihikatsuto, 17... Orifice.
Claims (1)
料の流通を許容する逆止弁を有し、この逆止弁の
上下流間を連通する燃料通路部に噴射ノズル側か
らの所定以上の燃料圧力に基づいて開弁する等圧
弁を介装した燃料吐出弁において、前記逆止弁の
閉弁直前に逆止弁のストロークに比例して高圧燃
料通路の容積を拡大する吸戻カラー部を設けて、
この吸戻カラー部の上下流間をオリフイスを介し
て連通させ、かつ吸戻カラー部による幾何学的吸
戻量と前記オリフイスの流量特性とを、燃料の実
質吸戻量が全運転域について要求吸戻量を超えな
いように設定したことを特徴とする燃料噴射装置
の燃料吐出弁。 It has a check valve that allows high-pressure fuel to flow from the fuel injection pump toward the injection nozzle. In the fuel discharge valve equipped with an equal pressure valve that opens when the check valve is opened, a suction collar portion is provided that expands the volume of the high-pressure fuel passage in proportion to the stroke of the check valve immediately before the check valve closes,
The upstream and downstream sides of this suction collar section are communicated through an orifice, and the geometric suction amount by the suction collar section and the flow rate characteristics of the orifice are set such that the actual amount of fuel sucked back is required for the entire operating range. A fuel discharge valve for a fuel injection device, characterized in that the valve is set so as not to exceed a suction amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17558885U JPS6284669U (en) | 1985-11-15 | 1985-11-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17558885U JPS6284669U (en) | 1985-11-15 | 1985-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6284669U true JPS6284669U (en) | 1987-05-29 |
Family
ID=31115051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17558885U Pending JPS6284669U (en) | 1985-11-15 | 1985-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6284669U (en) |
-
1985
- 1985-11-15 JP JP17558885U patent/JPS6284669U/ja active Pending
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