JPS61179368U - - Google Patents
Info
- Publication number
- JPS61179368U JPS61179368U JP1985062913U JP6291385U JPS61179368U JP S61179368 U JPS61179368 U JP S61179368U JP 1985062913 U JP1985062913 U JP 1985062913U JP 6291385 U JP6291385 U JP 6291385U JP S61179368 U JPS61179368 U JP S61179368U
- Authority
- JP
- Japan
- Prior art keywords
- needle valve
- closed
- sliding part
- leak passages
- sectional
- 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
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の第一実施例を示す断面図、第
２図は本考案の要部を示す断面図、第３図ａ，ｂ
は本考案の作動状態を示す断面図で、パイロツト
噴射時と主噴射時をそれぞれ示しており、第４図
は第１図のＡ―Ａ′線に沿う断面図、第５図は第
１図のＢ―Ｂ′線に沿う断面図、第６図は第１図
のＣ―Ｃ′線に沿う断面図、第７図は本考案のノ
ズルリフト特性図、第８図は本考案の低速時にお
ける燃料噴射特性図、第９図はノズルリフトと噴
孔面積の関係を示す特性図、第１０図は本考案の
第二実施例を示す断面図、第１１図は第１０図の
Ｄ―Ｄ′線に沿う断面図、第１２図は第１０図の
Ｅ―Ｅ′線に沿う断面図、第１３図は第１０図の
Ｆ―Ｆ′線に沿う断面図、第１４図は第１０図の
Ｇ―Ｇ′線に沿う断面図、第１５図は第１０図の
Ｈ―Ｈ′線に沿う断面図、第１６図は第二実施例
の要部を示す断面図、第１７図ａ，ｂは第二実施
例の作動状態を示す断面図で、パイロツト噴射時
と主噴射時をそれぞれ示しており、第１８図は本
考案の第三実施例の要部を示す断面図である。
１…ボデイ、２…針弁摺動部、３…第１リーク
通路、４…第２リーク通路、５…ニードルバルブ
、６…環状溝。
Figure 1 is a sectional view showing the first embodiment of the invention, Figure 2 is a sectional view showing the main parts of the invention, and Figures 3a and b.
4 is a cross-sectional view showing the operating state of the present invention, showing pilot injection and main injection, respectively. FIG. 4 is a cross-sectional view taken along line A-A' in FIG. 1, and FIG. 6 is a sectional view taken along the line C-C' of FIG. FIG. 9 is a characteristic diagram showing the relationship between nozzle lift and nozzle hole area, FIG. 10 is a sectional view showing the second embodiment of the present invention, and FIG. 11 is a diagram showing D-D in FIG. 12 is a sectional view taken along line E-E' in FIG. 10, FIG. 13 is a sectional view taken along line F-F' in FIG. 15 is a sectional view taken along the line HH' of FIG. 10, FIG. 16 is a sectional view showing the main parts of the second embodiment, and FIGS. 18b is a sectional view showing the operating state of the second embodiment, showing the pilot injection and the main injection, respectively. FIG. 18 is a sectional view showing the main part of the third embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Body, 2... Needle valve sliding part, 3... First leak passage, 4... Second leak passage, 5... Needle valve, 6... Annular groove.
Claims (1)
弁摺動部を設け、この針弁摺動部の内周面の上下
位置に第１および第２リーク通路を形成し、これ
らリーク通路に臨むニードルバルブの周面に環状
溝を形成し、ニードルバルブの閉弁時には第１お
よび第２リーク通路の導通を遮断する一方、ニー
ドルバルブのリフトに応じてこれらリーク通路の
導通と遮断を段階的に行ない、針弁摺動部を開閉
するようにしたことを特徴とする燃料噴射弁。 A needle valve sliding part for accommodating the needle valve is provided in the body of the nozzle, and first and second leak passages are formed at upper and lower positions on the inner peripheral surface of the needle valve sliding part, and the needle valve facing these leak passages is An annular groove is formed on the circumferential surface, and when the needle valve is closed, the first and second leak passages are disconnected from each other, and when the needle valve is lifted, these leak passages are opened and closed in stages, and the needle valve is closed. A fuel injection valve characterized by having a valve sliding part that opens and closes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985062913U JPS61179368U (en) | 1985-04-26 | 1985-04-26 | |
| KR2019860005349U KR910008108Y1 (en) | 1985-04-26 | 1986-04-21 | Fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985062913U JPS61179368U (en) | 1985-04-26 | 1985-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61179368U true JPS61179368U (en) | 1986-11-08 |
Family
ID=30592571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985062913U Pending JPS61179368U (en) | 1985-04-26 | 1985-04-26 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS61179368U (en) |
| KR (1) | KR910008108Y1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4734412U (en) * | 1971-05-12 | 1972-12-16 | ||
| JPS5859365A (en) * | 1981-10-02 | 1983-04-08 | Nissan Motor Co Ltd | Fuel injection valve |
-
1985
- 1985-04-26 JP JP1985062913U patent/JPS61179368U/ja active Pending
-
1986
- 1986-04-21 KR KR2019860005349U patent/KR910008108Y1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4734412U (en) * | 1971-05-12 | 1972-12-16 | ||
| JPS5859365A (en) * | 1981-10-02 | 1983-04-08 | Nissan Motor Co Ltd | Fuel injection valve |
Also Published As
| Publication number | Publication date |
|---|---|
| KR860013520U (en) | 1986-11-18 |
| KR910008108Y1 (en) | 1991-10-12 |