JPS6093172A - Fuel injection valve for diesel-engine - Google Patents
Fuel injection valve for diesel-engineInfo
- Publication number
- JPS6093172A JPS6093172A JP20150083A JP20150083A JPS6093172A JP S6093172 A JPS6093172 A JP S6093172A JP 20150083 A JP20150083 A JP 20150083A JP 20150083 A JP20150083 A JP 20150083A JP S6093172 A JPS6093172 A JP S6093172A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- fuel
- control
- fuel injection
- valve opening
- 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 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 239000000446 fuel Substances 0.000 title claims abstract description 25
- 239000003517 fume Substances 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000779 smoke Substances 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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は、ディーゼル機関用の燃料噴射弁に関する。[Detailed description of the invention] The present invention relates to a fuel injection valve for a diesel engine.
一般に、この種の燃料噴射弁は自動弁と機械弁とがあり
、前者は噴射管の圧力が一定の値になったとき自動的に
開弁し噴射するものであり、噴射量、噴射時期の制御は
いずれも燃料噴射ポンプで行われ、燃料噴射弁の方は、
油圧により作動するのみである。一方、後者においては
、ノズルニードルには常に一定の油圧が作用しており、
噴射するときはカムまたはレバーで機械的にノズルニー
ドルを開くものであり、噴射量、噴射時期の制御はもつ
ばら燃料噴射弁自体で行われる。そして、前者の開弁圧
の調整は、一般には、アジャストワッシャまたはアジヤ
スティングスクリューで行われ、その調整操作は機関の
高速、高負荷域である実用最大出力時に最良のマツチン
グをするようになされており、そのため、部分負荷域に
おいては、性能が悪化することは避けられなかった。す
なわち、この部分負荷域では燃料噴射ポンプの送油率が
小さく、燃料噴射弁のノズルニードルを噴射期間中全開
状態に保持できず、しかも、運転中適宜開弁圧を変える
ことにより噴射率を変更することはできない。そのため
、可変噴射弁と称さる提案や、ノズル自体を改良したビ
ントークスノズル等の提案が従来より多数行われている
が、いずれも機構が複雑となったり、使用条件に制約が
あったりして、実用装置として満足できるものではない
。In general, this type of fuel injection valve is divided into automatic valves and mechanical valves, and the former automatically opens and injects when the pressure in the injection pipe reaches a certain value, and the injection amount and timing are controlled. All controls are performed by the fuel injection pump, and the fuel injection valve is
It is operated only by hydraulic pressure. On the other hand, in the latter case, a constant hydraulic pressure is always acting on the nozzle needle.
When injecting, the nozzle needle is mechanically opened using a cam or lever, and the injection amount and timing are controlled by the tsubara fuel injection valve itself. The former valve opening pressure is generally adjusted using an adjusting washer or an adjusting screw, and the adjustment is performed to achieve the best matching at maximum practical output, which is the engine's high-speed, high-load range. Therefore, it was inevitable that the performance would deteriorate in the partial load range. In other words, in this partial load range, the oil delivery rate of the fuel injection pump is small, and the nozzle needle of the fuel injection valve cannot be kept fully open during the injection period. Moreover, the injection rate can be changed by appropriately changing the valve opening pressure during operation. I can't. For this reason, many proposals have been made over the years, such as a so-called variable injection valve and a Vintalks nozzle that has improved the nozzle itself, but all of them have complex mechanisms and restrictions on usage conditions. , it is not satisfactory as a practical device.
そこで本発明は、ノズル自体は充分使用慣らされた構造
のものでありながら、そこに電子噴射装置の技術を応用
して、前記従来技術の不都合を解“消ｊ−ようとするも
のである。Therefore, the present invention attempts to solve the disadvantages of the prior art by applying electronic injection device technology to the nozzle itself, which has a well-used structure.
以下、本発明の４’＋’７ｉ成を添付図面に示す実施例
にもとついて詳細に説明する。第１図は縦断面図、第２
図は第１図のＡ 、 Ａ断面図を示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS The 4'+'7i configuration of the present invention will be described in detail below based on embodiments shown in the accompanying drawings. Figure 1 is a longitudinal sectional view, Figure 2
The figure shows a sectional view taken along lines A and A in FIG.
図中、１Ｃｊ燃利燃料体、２は燃料弁ノズル、３はノズ
ルニードル、４はノズル用袋ナツト、５はデスタンスピ
ース、６はプレッシャピン、７はプレッシャスプリング
、８はスプリング案内、９は燃料入口、１０１漏曲取出
口で、以−Ｉ−の構造は周知の構造である。In the figure, 1Cj fuel unit, 2 a fuel valve nozzle, 3 a nozzle needle, 4 a nozzle cap nut, 5 a distance piece, 6 a pressure pin, 7 a pressure spring, 8 a spring guide, and 9 a The structure of the fuel inlet and the leakage outlet 101 is a well-known structure.
ここで本実施例では、スプリング案内８に当接した調整
ねじ１１の頭部に油密を保持する円筒部１２を設置」、
調整ねじ１１の螺動により該円筒部１２が回動及び上下
動（−でも漏油が漏出しないようにしている。該円筒体
１２の」一部にはコントロールピニオン１３をパン１−
形クランプで形成しボルト１４で締着しでいる。更に上
端には回転工具係合溝１５を設けている。前記コントロ
ールピニオン１３にはコントロールラック１６が噛合し
、コントロールラック１６は燃料弁本体１の延長部１７
で摺動自在に支持されている。１８はラックガイドピン
、１９はピン摺動溝を示す。In this embodiment, a cylindrical part 12 that maintains oil tightness is installed on the head of the adjusting screw 11 that contacts the spring guide 8.
The cylindrical part 12 rotates and moves up and down (-) by the screwing of the adjusting screw 11 to prevent oil from leaking.
It is formed with a shaped clamp and is fastened with bolts 14. Furthermore, a rotary tool engaging groove 15 is provided at the upper end. A control rack 16 meshes with the control pinion 13, and the control rack 16 is connected to an extension 17 of the fuel valve body 1.
It is slidably supported. 18 is a rack guide pin, and 19 is a pin sliding groove.
コントロールラック１６は、第２図に示すように、スピ
ンドル２０に嵌合され、その両端をサークリップ２１．
２］でスピンドル２０に固着されている。該スピンドル
２０は鉄心２２を嵌着し、該鉄心２２は燃料弁本体１よ
り延設したソレノイドハウジング２３に摺動自在に嵌挿
しでいる。該 ゛ソレノイドハウジング２３にはソレノ
イドコイル２４が内蔵されている。ソレノイドハウジン
グ２３の端部には当接片２５を固定し、該当接片２５に
は軸受部２６が嵌着している。該軸受部２６と前記鉄心
２２との間に戻しスプリング２７が圧縮された状態で内
蔵されている。２８は給電線で、図示しないマイクロコ
ンピュータへ導通しており、２９はセンサーで、これも
マイクロコンピュータへ導通している。As shown in FIG. 2, the control rack 16 is fitted onto a spindle 20 and has both ends attached to circlips 21.
2] is fixed to the spindle 20. An iron core 22 is fitted into the spindle 20, and the iron core 22 is slidably fitted into a solenoid housing 23 extending from the fuel valve body 1. A solenoid coil 24 is built into the solenoid housing 23. A contact piece 25 is fixed to the end of the solenoid housing 23, and a bearing portion 26 is fitted into the corresponding contact piece 25. A return spring 27 is built in between the bearing portion 26 and the iron core 22 in a compressed state. Reference numeral 28 denotes a power supply line, which is electrically connected to a microcomputer (not shown), and 29 is a sensor, which is also electrically connected to the microcomputer.
本実施例は、以」−のような構成になっているので、例
えばフライホイルに近接設置した回転位相センサからの
信号をマイクロコンピュータで演算し、この信号によっ
て、ソレノイドコイル２４に通電し、機関」〕１！転中
でも、開弁圧を調節することができるのである。すなわ
ち、例えば排気煙濃度が高い回転域（部分負荷域）では
、ソレノイドコイル２４に通電し、スピンドル２０が摺
動し、コントロールラック１６でもってコントロールピ
ニオン１３を回動させる。その結果、調整ねじ１１が螺
動しながら降下し、スプリング案内８にてプレッシャス
プリング７を押圧するので、ノズルニードル３の開弁圧
は高まり、燃□料の噴射量を減量する。また、中速トル
クの向−１−のためには増量さる、Ｆ、うな制御もでき
る。This embodiment has the following configuration. For example, a signal from a rotational phase sensor installed close to the flywheel is calculated by a microcomputer, and this signal is used to energize the solenoid coil 24 to start the engine. ”]1! This allows the valve opening pressure to be adjusted even during operation. That is, for example, in a rotation range (partial load range) where the exhaust smoke concentration is high, the solenoid coil 24 is energized, the spindle 20 slides, and the control pinion 13 is rotated by the control rack 16. As a result, the adjusting screw 11 descends while spiraling, and the spring guide 8 presses the pressure spring 7, so that the valve opening pressure of the nozzle needle 3 increases and the amount of fuel injected is reduced. In addition, for medium-speed torque direction -1-, control such as increase, F, and E can be performed.
なお、本実施例では、コントロールピニオン１３と噛合
うコント１コールラック１６の往復動制御をソレノイド
コイル２４で行ったが、通常のステラピンクモータで行
ってもよい。In this embodiment, the reciprocating motion of the control 1 call rack 16 that meshes with the control pinion 13 is controlled by the solenoid coil 24, but it may be controlled by a normal Stella Pink motor.
以上型するに本発明は、ボッシュ型燃料噴射弁のノズル
ニードルを押圧するプレッシャスプリング」−のスプリ
ング案内に、調節ねじを当接し、該調節ねじをラック−
ピニオン機構により螺動せしめ、該ラック−ピニオン機
構を電子制御したディーゼル機関用の燃料噴射弁である
から、次の効果を奏する。In summary, the present invention provides an adjustment screw that is brought into contact with the spring guide of a pressure spring that presses the nozzle needle of a Bosch type fuel injection valve, and the adjustment screw is connected to a rack.
Since this is a fuel injection valve for a diesel engine that is screwed by a pinion mechanism and the rack-pinion mechanism is electronically controlled, it has the following effects.
■プレッシャスプリング上のスプリング案内に調節ねじ
を当接し、該調節ねじをラック−ピニオン機構により螺
動せしめたので、機関運転中においても、ノズルニード
ルの開弁圧を調節できるので低速及び中速においても適
正な噴射率を得ることができる。■The adjustment screw is in contact with the spring guide on the pressure spring, and the adjustment screw is screwed by a rack-pinion mechanism, so the opening pressure of the nozzle needle can be adjusted even when the engine is running, so at low and medium speeds. It is also possible to obtain an appropriate injection rate.
■燃料噴射等に、アングライヒ機構やトルクコントロー
ルカムなどを必要とせずに、全域において噴射率を制御
することができる。■It is possible to control the injection rate over the entire range without requiring an Angleich mechanism or torque control cam for fuel injection.
■慣らされたボッシュ型燃料噴射弁であるため、噴射は
正確に行われ、既存の燃料噴射系及び燃焼室にもよく適
合することができる。■Since it is a well-seasoned Bosch type fuel injection valve, injection is performed accurately and can be well adapted to existing fuel injection systems and combustion chambers.
第１図は本発明の実施例の縦断面図、第２図は第１図の
Ａ、Ａ断面図を示す。
３・・・ノズルニードル、７・・・プレッシャスプリン
グ、８・・・スプリング案内、１１・・・調節ねじ、１
３・・・コントロールラック、１６・・・コントロール
ビニオン、２４・・・ソレノイドコイル
代理人弁理士 岡 部 吉 彦FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along line A and A in FIG. 3... Nozzle needle, 7... Pressure spring, 8... Spring guide, 11... Adjustment screw, 1
3...Control rack, 16...Control binion, 24...Solenoid coil Attorney Yoshihiko Okabe
Claims (1)
ッシャスプリング上のスプリング案内を機関運転中に電
子制御により」二下させるようにしたディーゼル機関用
の燃料噴射弁A fuel injection valve for a diesel engine in which the spring guide on the pressure spring that presses the nozzle needle of the Horash type fuel injection valve is lowered by electronic control during engine operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20150083A JPS6093172A (en) | 1983-10-26 | 1983-10-26 | Fuel injection valve for diesel-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20150083A JPS6093172A (en) | 1983-10-26 | 1983-10-26 | Fuel injection valve for diesel-engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6093172A true JPS6093172A (en) | 1985-05-24 |
Family
ID=16442079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20150083A Pending JPS6093172A (en) | 1983-10-26 | 1983-10-26 | Fuel injection valve for diesel-engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6093172A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418635A (en) * | 2011-12-31 | 2012-04-18 | 中国兵器工业集团第七○研究所 | Electrically-controlled fuel injector |
| CN108331794A (en) * | 2018-02-09 | 2018-07-27 | 安徽工程大学 | A kind of hydraulic shunting system of arbitrary distribution pressure ratio |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328564A (en) * | 1976-08-31 | 1978-03-16 | Mitsubishi Heavy Ind Ltd | Gas-liquid separating method |
| JPS5833774B2 (en) * | 1976-03-15 | 1983-07-22 | 株式会社東芝 | Control device for frequency converter |
-
1983
- 1983-10-26 JP JP20150083A patent/JPS6093172A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5833774B2 (en) * | 1976-03-15 | 1983-07-22 | 株式会社東芝 | Control device for frequency converter |
| JPS5328564A (en) * | 1976-08-31 | 1978-03-16 | Mitsubishi Heavy Ind Ltd | Gas-liquid separating method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418635A (en) * | 2011-12-31 | 2012-04-18 | 中国兵器工业集团第七○研究所 | Electrically-controlled fuel injector |
| CN108331794A (en) * | 2018-02-09 | 2018-07-27 | 安徽工程大学 | A kind of hydraulic shunting system of arbitrary distribution pressure ratio |
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