JPH0256513B2 - - Google Patents
Info
- Publication number
- JPH0256513B2 JPH0256513B2 JP56059900A JP5990081A JPH0256513B2 JP H0256513 B2 JPH0256513 B2 JP H0256513B2 JP 56059900 A JP56059900 A JP 56059900A JP 5990081 A JP5990081 A JP 5990081A JP H0256513 B2 JPH0256513 B2 JP H0256513B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- passage
- sleeve
- hole
- fuel injection
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 claims description 22
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000007257 malfunction Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
-
- 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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
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
【発明の詳細な説明】
本発明は、弁座の下流に位置した円筒状部分が
機関シリンダ燃焼室に通じ、かつ真つすぐな軸線
を備えた少なくとも１個のノズル通路を有し、こ
のノズル通路を通つて流れる燃料に対して該ノズ
ル通路の軸線のまわりの渦巻き運動を与える表面
が設けられているノズル部材を含むデイーゼル機
関の燃料噴射弁用ノズルに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides at least one nozzle passage whose cylindrical part downstream of the valve seat opens into the combustion chamber of the engine cylinder and has a straight axis. The present invention relates to a nozzle for a diesel engine fuel injector including a nozzle member provided with a surface that imparts a swirling motion about the axis of the nozzle passage to fuel flowing through the passage.
デイーゼル機関の各サイクル毎に噴射弁のノズ
ルを介して特定量の燃料がデイーゼル機関の燃焼
室へ噴射される。ノズル通路から出る燃料噴射
は、一方では特定の作動条件に応じた深さまで燃
焼室内へ進入するのに十分に長い必要があるが、
他方では燃料を完全に燃焼させるのに十分に細か
く噴霧化する必要がある。このため、燃料噴射は
ノズルと燃焼室の壁との間の距離に応じてノズル
通路に対して選択された速度と進入力を有する必
要がある。また、燃料噴射は燃焼室内に燃料を十
分に分配するのに適した広がり角度を有する必要
がある。 During each cycle of the diesel engine, a specific amount of fuel is injected into the combustion chamber of the diesel engine through the nozzle of the injection valve. On the one hand, the fuel injection exiting from the nozzle passage must be long enough to penetrate into the combustion chamber to a depth depending on the specific operating conditions;
On the other hand, it is necessary to atomize the fuel finely enough to burn it completely. For this reason, the fuel injection must have a selected velocity and entry force into the nozzle passage depending on the distance between the nozzle and the wall of the combustion chamber. Also, the fuel injection must have a suitable spread angle to adequately distribute the fuel within the combustion chamber.
噴霧化を向上させるのに、スイス国特許第
340093号の第１図は、ノズル通路３が螺旋状に巻
いた表面により形成されている前記型式のノズル
を開示している。このノズル通路の形態では、燃
料はノズル通路を通過する際にノズル通路の軸線
のまわりの渦巻き運動を行い、噴霧化にとつて好
ましいことが分かつている。しかしながら、この
ようなノズル通路の重大な欠点は、ノズル通路が
極めて複雑な方法である火花腐食により作られる
ことである。さらに、堆積物がノズル通路に溜ま
り、詰まりによる作動不良をもたらすことがあ
る。 Swiss patent no.
Figure 1 of No. 340093 discloses a nozzle of said type in which the nozzle passage 3 is formed by a helically wound surface. This nozzle passage configuration has been found to be favorable for atomization, as the fuel undergoes a swirling motion about the axis of the nozzle passage as it passes through the nozzle passage. However, a significant drawback of such nozzle passages is that they are produced by spark corrosion, which is a very complex method. Further, deposits may accumulate in the nozzle passageway, resulting in clogging and malfunction.
本発明の目的は、さらに容易に作ることががで
き、詰まりにくく、一方燃料噴射の質は同じであ
る前記型式の燃料噴射ノズルを改良することであ
る。 The aim of the invention is to improve a fuel injection nozzle of the above type, which is easier to manufacture and less likely to clog, while the quality of the fuel injection remains the same.
この目的のため、本発明によると、渦巻き運動
を与える表面は弁座とノズル通路との間におい
て、ノズル部材に離脱可能に配置されたスリーブ
に形成され、かつ前記渦巻き運動を与える表面が
前記スリーブの壁を貫通し、かつ該ノズル通路へ
通じる少なくとも２つの筒状の孔により形成さ
れ、それにより該ノズル通路が円形断面を有す
る。 To this end, according to the invention, the swirling surface is formed on a sleeve releasably arranged on the nozzle member between the valve seat and the nozzle passage, and the swirling surface is formed on the sleeve. is formed by at least two cylindrical holes passing through the wall of the nozzle passageway and communicating with the nozzle passageway, such that the nozzle passageway has a circular cross section.
本発明によるノズルの利点は、渦巻き運動を与
える孔がノズル部材のノズル通路とは別個に作る
ことができることである。この結果、前記孔は、
ノズルの作動中に詰まりにくい比較的に簡単な形
状を有する。ノズル通路はまた非常に簡単な形
状、すなわち通常の円形断面を有し、そのため渦
巻き運動を与えられた燃料噴射は該ノズル通路を
出る前に益々良好に案内される。さらに、詰まり
による機能不全は防止される。したがつて、新規
な本発明のノズルは簡単で実用向きであり、かつ
安価である。 An advantage of the nozzle according to the invention is that the hole providing the swirling movement can be made separately from the nozzle channel of the nozzle member. As a result, the hole is
It has a relatively simple shape that prevents the nozzle from clogging during operation. The nozzle channel also has a very simple shape, ie a normal circular cross section, so that the fuel injection imparted with a swirling motion is guided even better before exiting the nozzle channel. Furthermore, malfunctions due to blockages are prevented. The novel nozzle of the invention is therefore simple, practical and inexpensive.
本発明の別な実施例では、ノズル通路に向かつ
て先細りの孔が、この孔およびノズル通路に対し
て接線方向に延びる孔と該ノズル通路との間に設
けられている。この結果、渦巻き運動を与える孔
が通じている断面、したがつて該孔の配置可能な
数が増加する。これは、最適な渦巻き運動を生じ
る条件を提供する。 In a further embodiment of the invention, a hole tapering towards the nozzle passage is provided between the hole and the hole extending tangentially to the nozzle passage. As a result, the cross section through which the holes imparting the spiral movement extend, and therefore the number of possible arrangements of the holes, increases. This provides conditions for optimal swirling motion.
前記円維状の孔はノズル部材、または該ノズル
部材とスリーブとの間に固定されたブシユに形成
してもよい。 The circular hole may be formed in the nozzle member or in a bushing fixed between the nozzle member and the sleeve.
本発明を添付図面を参照して一実施例より説明
する。 The present invention will be explained by way of an embodiment with reference to the accompanying drawings.
第１図と第２図を参照すると、燃焼室１０から
密閉された中空円筒状のノズル部材１は、その円
筒状部分に円筒状の孔の形態の３つのノズル通路
２を有し、これらのノズル通路はノズルの周囲に
一様に分配されている。３つのノズル通路２の軸
線６は、燃焼室１０へ向かつて広がる円錐状表面
に位置している。入口側において、円錐状の孔３
は各ノズル通路２と関連し、該ノズル通路へ向か
つて先細りになつており、また該孔３はノズル部
材１に固定されたブシユ７に形成されている。各
円錐状の孔３の上流において、２つの直線状の孔
４がスリーブ５に設けられ、該孔４の軸線は弁の
軸線８の横断方向に延びている。円錐状の孔３に
関連した孔４の垂直の軸線８の方向においてそれ
ぞれの高さにあり、該孔４の軸線は垂直方向の投
影において交差している。該孔４の軸線は実質的
に接線方向に関連の円錐状の孔３に達している。
スリーブ５はブシユ７に嵌合しており、したがつ
てノズル部材１に固定されている。ノズル部材
１、ブシユ７およびスリーブ５は、それぞれ頂端
にフランジを有し、これらのフランジを介して噴
射弁（図示せず）に接続されている。第１図を参
照すると、スリーブの頂端は、可動の噴射弁のニ
ードルと協同する弁座１２を有する。ノズルが作
動する際、燃料は弁座１２を介してスリーブ５の
室９に流入し、次に渦巻き運動を与える孔４に進
入する。これらの孔から出た燃料は、円錐状の孔
３に流入し、そこで渦巻き運動を与えられるが、
これは孔４の接線方向の配列による。この渦巻き
運動を行う燃料は、ノズル通路２を介して燃焼室
１０に流入し、そこで燃料噴射は渦巻き運動の作
用の下で最終的に噴霧化される。 1 and 2, a hollow cylindrical nozzle member 1 sealed from a combustion chamber 10 has in its cylindrical part three nozzle passages 2 in the form of cylindrical holes; The nozzle passages are uniformly distributed around the nozzle. The axes 6 of the three nozzle passages 2 lie on a conical surface that widens towards the combustion chamber 10 . On the inlet side, a conical hole 3
is associated with each nozzle passage 2 and tapers towards the nozzle passage, and the bore 3 is formed in a bushing 7 fixed to the nozzle member 1. Upstream of each conical bore 3, two straight bores 4 are provided in the sleeve 5, the axis of which extends transversely to the axis 8 of the valve. They are at respective heights in the direction of the vertical axes 8 of the holes 4 associated with the conical holes 3, which axes intersect in the vertical projection. The axis of the bore 4 reaches the associated conical bore 3 substantially tangentially.
The sleeve 5 fits into the bushing 7 and is therefore fixed to the nozzle member 1. The nozzle member 1, bush 7, and sleeve 5 each have flanges at their top ends, and are connected to an injection valve (not shown) via these flanges. Referring to FIG. 1, the top end of the sleeve has a valve seat 12 that cooperates with a movable injector needle. When the nozzle is activated, fuel flows through the valve seat 12 into the chamber 9 of the sleeve 5 and then into the hole 4 which imparts a swirling motion. The fuel coming out of these holes flows into the conical hole 3 where it is given a swirling motion.
This is due to the tangential arrangement of the holes 4. This swirling fuel enters the combustion chamber 10 via the nozzle passage 2, where the fuel injection is finally atomized under the influence of the swirling motion.
前記実施例と異なり、円錐状の孔３はノズル部
材１自体においてノズル通路２の入口に形成して
もよく、この場合ブシユ７は省くことができる。
円筒状の孔４の代わりに、渦巻き運動を与える表
面はスリーブ５を貫通する。例えば長方形断面の
ダクトの形態にすることもできる。渦巻き運動を
与える表面がスリーブに設けられている場合、渦
巻き運動を与えられた燃料の流れは、円筒状のノ
ズル通路２に直接流入し、この場合、円錐状の孔
を設ける必要はない。渦巻き運動を与える表面
は、またノズル部材１に挿入された環状のワツシ
ヤの形態の部材の積み重ねに形成してもよく、こ
れらのワツシヤは一緒にスリーブを形成する。一
列のノズル通路２の代わりに、複数列のノズル通
路を一方の上に他方を配置して設けることもでき
る。それで、渦巻き運動を与える表面は、種々の
高さに配置することによりノズル通路と関連する
ことになる。 In contrast to the embodiment described above, the conical hole 3 can also be formed in the nozzle element 1 itself at the entrance to the nozzle channel 2, in which case the bushing 7 can be omitted.
Instead of the cylindrical hole 4, a spiraling surface passes through the sleeve 5. For example, it can also be in the form of a duct with a rectangular cross section. If the sleeve is provided with a swirling surface, the swirling fuel flow flows directly into the cylindrical nozzle passage 2, in which case there is no need to provide a conical hole. The swirling surface may also be formed in a stack of elements in the form of annular washers inserted into the nozzle member 1, which washers together form a sleeve. Instead of one row of nozzle passages 2, it is also possible to provide several rows of nozzle passages, one above the other. The surfaces imparting the swirling motion can then be associated with the nozzle passage by being arranged at different heights.
第１図は渦巻き運動を与える孔を備えたノズル
の、第２図の線−に沿つた断面図、および第
２図は第１図の線−に沿つた断面図である。
図において、１……ノズル部材、２……ノズル
通路、３……円錐状の孔、４……円筒状の孔、５
……スリーブ、７……ブシユ、１０……燃焼室。
1 is a cross-sectional view along the line ``-'' of FIG. 2, and FIG. 2 is a sectional view along the line ``-'' of FIG. In the figure, 1... Nozzle member, 2... Nozzle passage, 3... Conical hole, 4... Cylindrical hole, 5
...Sleeve, 7...Bushy, 10...Combustion chamber.
Claims (1)
した該ノズル部材の円筒状部分がまつすぐな軸線
６を備え、かつ機関シリンダの燃焼室内へ通じる
少なくとも１個のノズル通路２を有し、該ノズル
通路を貫流する燃料に該ノズル通路２の軸線６の
まわりの渦巻き運動を与える表面が設けられてい
るデイーゼル機関の燃料噴射弁用ノズルにおい
て、前記渦巻き運動を与える表面４は、該弁座１
２と該ノズル通路２との間において、前記ノズル
部材１に離脱可能に配置されたスリーブ５に形成
されており、前記渦巻き運動を与える表面が前記
スリーブ５の壁を貫通し、かつ該ノズル通路２へ
通じる少なくとも２つの筒状の孔４により形成さ
れ、それにより該ノズル通路２が円形断面を有す
ることを特徴とするデイーゼル機関の燃料噴射弁
用ノズル。 ２ 特許請求の範囲第１項に記載のノズルにおい
て、該ノズル通路２へ向かつて先細りになる孔３
が、この円錐状の孔３に対して大体において接線
方向に延びる前記孔４と前記ノズル通路との間に
設けられていることを特徴とするデイーゼル機関
の燃料噴射弁用ノズル。 ３ 特許請求の範囲第２項に記載のノズルにおい
て、前記円錐状の孔３が前記ノズル部材１に形成
されていることを特徴とするデイーゼル機関の燃
料噴射弁用ノズル。 ４ 特許請求の範囲第２項に記載のノズルにおい
て、前記円錐状の孔３が前記ノズル部材１と前記
スリーブ５の間に固定されたブシユ７に形成され
ていることを特徴とするデイーゼル機関の燃料噴
射弁用ノズル。Claims: 1. At least one nozzle comprising a nozzle member 1 whose cylindrical part downstream of the valve seat 12 has a straight axis 6 and which opens into the combustion chamber of the engine cylinder. A nozzle for a fuel injection valve of a diesel engine having a passage 2 and provided with a surface imparting a swirling motion about an axis 6 of the nozzle passage 2 to the fuel flowing through the nozzle passage. 4 is the valve seat 1
2 and the nozzle passage 2, the sleeve 5 is removably arranged on the nozzle member 1, the surface imparting the swirling movement penetrating the wall of the sleeve 5, and the nozzle passage 2. A nozzle for a fuel injection valve of a diesel engine, characterized in that it is formed by at least two cylindrical holes 4 leading into the nozzle passage 2, so that the nozzle passage 2 has a circular cross section. 2. In the nozzle according to claim 1, the hole 3 tapers toward the nozzle passage 2.
is provided between the nozzle passage and the hole 4 extending generally tangentially to the conical hole 3. 3. A nozzle for a fuel injection valve of a diesel engine according to claim 2, wherein the conical hole 3 is formed in the nozzle member 1. 4. The nozzle according to claim 2, wherein the conical hole 3 is formed in a bushing 7 fixed between the nozzle member 1 and the sleeve 5. Nozzle for fuel injection valve.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH320080A CH645699A5 (en) | 1980-04-25 | 1980-04-25 | Nozzle of a fuel injection valve for a diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56167848A JPS56167848A (en) | 1981-12-23 |
| JPH0256513B2 true JPH0256513B2 (en) | 1990-11-30 |
Family
ID=4250814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5990081A Granted JPS56167848A (en) | 1980-04-25 | 1981-04-22 | Fuel injection valve nozzle for diesel engine |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS56167848A (en) |
| AT (1) | AT367868B (en) |
| CH (1) | CH645699A5 (en) |
| DE (1) | DE3018431C2 (en) |
| DK (1) | DK175881A (en) |
| FR (1) | FR2481372B1 (en) |
| NL (1) | NL8102007A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022065542A (en) * | 2020-10-15 | 2022-04-27 | 株式会社 Acr | Liquid injection nozzle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559557A (en) * | 1978-07-06 | 1980-01-23 | Ricoh Co Ltd | Photoreceptor for electrophotography |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB415274A (en) * | 1932-10-07 | 1934-08-23 | Pillard Chauffage | Atomiser with variable output for liquid fuel and the like |
| GB467124A (en) * | 1935-05-27 | 1937-06-11 | Deckel Friedrich | Improvements in or relating to fuel injection nozzles for internal combustion engines |
| US2213928A (en) * | 1936-11-04 | 1940-09-03 | Weber Engine Company | Fuel injection nozzle |
| DE843765C (en) * | 1942-01-25 | 1952-07-14 | Bosch Gmbh Robert | Fuel injector |
| GB677826A (en) * | 1950-02-11 | 1952-08-20 | Lucas Ltd Joseph | Improvements relating to liquid fuel injection nozzles |
| US2974881A (en) * | 1955-09-30 | 1961-03-14 | Bendix Corp | Fuel injection nozzle |
| CH340093A (en) * | 1956-05-12 | 1959-07-31 | Sulzer Ag | Fuel injector and method for making the same |
| DE2557772A1 (en) * | 1975-12-20 | 1977-06-23 | Kloeckner Humboldt Deutz Ag | FUEL INJECTION VALVE |
-
1980
- 1980-04-25 CH CH320080A patent/CH645699A5/en not_active IP Right Cessation
- 1980-05-14 AT AT258280A patent/AT367868B/en not_active IP Right Cessation
- 1980-05-14 DE DE19803018431 patent/DE3018431C2/en not_active Expired
-
1981
- 1981-04-21 DK DK175881A patent/DK175881A/en not_active Application Discontinuation
- 1981-04-22 JP JP5990081A patent/JPS56167848A/en active Granted
- 1981-04-23 NL NL8102007A patent/NL8102007A/en not_active Application Discontinuation
- 1981-04-24 FR FR8108216A patent/FR2481372B1/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559557A (en) * | 1978-07-06 | 1980-01-23 | Ricoh Co Ltd | Photoreceptor for electrophotography |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3018431C2 (en) | 1983-06-01 |
| DK175881A (en) | 1981-10-26 |
| AT367868B (en) | 1982-08-10 |
| FR2481372B1 (en) | 1986-06-27 |
| JPS56167848A (en) | 1981-12-23 |
| DE3018431A1 (en) | 1981-11-05 |
| NL8102007A (en) | 1981-11-16 |
| FR2481372A1 (en) | 1981-10-30 |
| ATA258280A (en) | 1981-12-15 |
| CH645699A5 (en) | 1984-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100342093B1 (en) | A swirl generator in a fuel injector | |
| US4945877A (en) | Fuel injection valve | |
| EP0846225B1 (en) | Injection valve, in particular for directly injecting fuel into the combustion chamber of an internal combustion engine | |
| US4570598A (en) | Air assist fuel distributor type fuel injection system | |
| US4813610A (en) | Gasoline injector for an internal combustion engine | |
| US4006719A (en) | Vortex action fuel injection valve for internal combustion engine | |
| JPH0534515B2 (en) | ||
| US5044561A (en) | Injection valve for fuel injection systems | |
| SU837334A3 (en) | Fuel jet | |
| US5012981A (en) | Injection valve | |
| JPS6347652Y2 (en) | ||
| EP0786049A1 (en) | Fuel injection valve | |
| US5878962A (en) | Pressure swirl injector with angled cone spray for fuel injection | |
| US4982901A (en) | Injection valve | |
| US5012983A (en) | Perforated plate for a fuel injection valve | |
| EP1328723B1 (en) | Fuel injection valve | |
| JPH0256513B2 (en) | ||
| EP0610932B1 (en) | Fuel supply system for internal combustion engine | |
| JP2773095B2 (en) | Fuel injection valve | |
| WO1984001980A1 (en) | Fuel injection valve | |
| DE10312486B4 (en) | Fuel injector | |
| DE3147198A1 (en) | "INSTALLING AN INLET PIPE IN THE CYLINDER ROOM OF AN INTERNAL COMBUSTION ENGINE" | |
| DE19519838C2 (en) | Method for influencing the alignment of fuel on a fuel injector and fuel injector | |
| JPH02241972A (en) | Electromagnetic fuel injection valve | |
| AU584449B2 (en) | Fuel injector nozzle |