JPS6421261U - - Google Patents
Info
- Publication number
- JPS6421261U JPS6421261U JP11508287U JP11508287U JPS6421261U JP S6421261 U JPS6421261 U JP S6421261U JP 11508287 U JP11508287 U JP 11508287U JP 11508287 U JP11508287 U JP 11508287U JP S6421261 U JPS6421261 U JP S6421261U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- fuel injection
- spring
- accumulation chamber
- nozzle according
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000009825 accumulation Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図はこの考案による蓄圧式燃料噴射ノズル
の一実施例を示す断面図、第２図は第１図の蓄圧
室内に配置された部材の一例を示す断面図、第３
図は第１図の蓄圧室内に配置された部材の別の例
を示す断面図、第４図はこの考案による蓄圧式燃
料噴射ノズルの別の実施例を示す断面図、及び第
５図は従来の蓄圧式燃料噴射ノズルの一例を示す
断面図である。
１……ゴム等の弾性部材、２……チエツクバル
ブ、３……針弁、４……スプリング、５……蓄圧
室、６……チエツクバルブシート、７……チエツ
クバルブ外周隙間、８，１８……燃料噴射ポンプ
、９，１９……噴射パイプ、１０……蓄圧式燃料
噴射ノズル、１１……噴口、１３……通路、１４
，１７……通孔、１５……本体、１６，３７……
リーク通路、２０……スパイラル状の金属製部材
、３０……増圧タイプの蓄圧式燃料噴射ノズル、
３４……チエツクボール、３５……ソレノイドバ
ルブ、３６……スプリング、３８……プランジヤ
、４０……増圧機構。
FIG. 1 is a cross-sectional view showing one embodiment of the pressure accumulator fuel injection nozzle according to this invention, FIG.
The figure is a cross-sectional view showing another example of the members arranged in the pressure accumulator shown in Fig. 1, Fig. 4 is a cross-sectional view showing another embodiment of the pressure accumulator fuel injection nozzle according to this invention, and Fig. 5 is a conventional one. FIG. 2 is a sectional view showing an example of a pressure accumulation type fuel injection nozzle. 1... Elastic member such as rubber, 2... Check valve, 3... Needle valve, 4... Spring, 5... Pressure accumulation chamber, 6... Check valve seat, 7... Check valve outer periphery gap, 8, 18 ... Fuel injection pump, 9, 19 ... Injection pipe, 10 ... Pressure accumulation type fuel injection nozzle, 11 ... Nozzle port, 13 ... Passage, 14
, 17...Through hole, 15...Main body, 16, 37...
Leak passage, 20...Spiral-shaped metal member, 30...Pressure accumulating type fuel injection nozzle,
34...Check ball, 35...Solenoid valve, 36...Spring, 38...Plunger, 40...Pressure increase mechanism.
Claims (1)
置し、前記スプリングが位置する部分の前記蓄圧
室の燃料容積を縮小したことを特徴とする蓄圧式
燃料噴射ノズル。 (2) 前記部材は前記スプリングを埋め込んで成
形したゴム等の弾性部材であることを特徴とする
実用新案登録請求の範囲第１項に記載の蓄圧式燃
料噴射ノズル。 (3) 前記部材は前記スプリングの素線間に配置
したスパイラル状の金属製部材であることを特徴
とする実用新案登録請求の範囲第１項に記載の蓄
圧式燃料噴射ノズル。 (4) 燃料噴射ポンプから前記蓄圧室への燃料圧
送期間が終了し、噴口からエンジンの燃焼室への
燃料噴射開始から所定期間経過後に、前記蓄圧室
内の圧力をリークさせて前記蓄圧室内を針弁の閉
弁圧力以下に降下させたことを特徴とする実用新
案登録請求の範囲第１項に記載の蓄圧式燃料噴射
ノズル。 (5) セラミツク材料で構成した断熱エンジンに
適用したことを特徴とする実用新案登録請求の範
囲第１項に記載の蓄圧式燃料噴射ノズル。[Claims for Utility Model Registration] (1) A pressure accumulation type fuel injection characterized in that a member is arranged between the wires of a spring in a pressure accumulation chamber to reduce the fuel volume of the pressure accumulation chamber in a portion where the spring is located. nozzle. (2) The pressure accumulating fuel injection nozzle according to claim 1, wherein the member is an elastic member made of rubber or the like formed by embedding the spring. (3) The pressure accumulating fuel injection nozzle according to claim 1, wherein the member is a spiral metal member disposed between the wires of the spring. (4) After the period of pumping fuel from the fuel injection pump to the pressure accumulation chamber has ended and a predetermined period has elapsed since the start of fuel injection from the nozzle to the combustion chamber of the engine, the pressure inside the pressure accumulation chamber is leaked and the pressure inside the pressure accumulation chamber is pumped. The pressure accumulating fuel injection nozzle according to claim 1, characterized in that the pressure is lowered below the closing pressure of the valve. (5) The pressure accumulating fuel injection nozzle according to claim 1, which is applied to an adiabatic engine made of ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11508287U JPH0521657Y2 (en) | 1987-07-29 | 1987-07-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11508287U JPH0521657Y2 (en) | 1987-07-29 | 1987-07-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6421261U true JPS6421261U (en) | 1989-02-02 |
| JPH0521657Y2 JPH0521657Y2 (en) | 1993-06-03 |
Family
ID=31356412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11508287U Expired - Lifetime JPH0521657Y2 (en) | 1987-07-29 | 1987-07-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0521657Y2 (en) |
-
1987
- 1987-07-29 JP JP11508287U patent/JPH0521657Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0521657Y2 (en) | 1993-06-03 |
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