JPS6136776Y2 - - Google Patents
Info
- Publication number
- JPS6136776Y2 JPS6136776Y2 JP1977129222U JP12922277U JPS6136776Y2 JP S6136776 Y2 JPS6136776 Y2 JP S6136776Y2 JP 1977129222 U JP1977129222 U JP 1977129222U JP 12922277 U JP12922277 U JP 12922277U JP S6136776 Y2 JPS6136776 Y2 JP S6136776Y2
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- cylinder head
- expanded
- fuel injection
- injection valve
- 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
Links
- 239000000446 fuel Substances 0.000 claims description 45
- 238000002347 injection Methods 0.000 claims description 32
- 239000007924 injection Substances 0.000 claims description 32
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案はデイーゼル機関の燃料噴射弁のスリー
ブの改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of the sleeve of a fuel injection valve for a diesel engine.
従来、デイーゼル機関の燃料噴射弁は、その機
関の性能に重要な影響を与えるものであるが、デ
イーゼル機関は近年ますます高速、高出力化され
る傾向にある。したがつて燃料噴射弁のように、
燃焼室及びシリンダヘツドから高温の熱を受ける
燃料噴射弁及びその周辺の部材は次第に苛酷な条
件での作動を押求されるようになつてきている。 BACKGROUND ART Conventionally, the fuel injection valve of a diesel engine has had an important influence on the performance of the engine, but in recent years there has been a trend toward higher speeds and higher outputs of diesel engines. Therefore, like a fuel injection valve,
Fuel injection valves and their surrounding components, which receive high-temperature heat from combustion chambers and cylinder heads, are increasingly being required to operate under severe conditions.
従つて、作動中の燃料噴射弁の温度も高温にな
るので、燃料噴射弁の周囲から冷却水により冷却
するため、燃料噴射弁の取付部のシリンダヘツド
部材に管状のスリーブを嵌着し、その管状スリー
ブの燃焼室側端部を拡管して、シリンダヘツド部
材に固設して燃料噴射弁の冷却室を形成してい
る。 Therefore, the temperature of the fuel injection valve during operation becomes high, so in order to cool the fuel injection valve with cooling water from around the fuel injection valve, a tubular sleeve is fitted to the cylinder head member of the mounting part of the fuel injection valve. The combustion chamber side end of the tubular sleeve is expanded and fixed to the cylinder head member to form a cooling chamber for the fuel injection valve.
そこで燃料噴射弁は、上記管状スリーブをホル
ダーとしてその中に嵌着されるが、その点検整備
のためにしばしば機関の外部に抜き出される。一
方従来使用されている燃料噴射弁に於ては燃料噴
射弁の作動中の過熱等の原因で、そのスリーブの
拡管部が燃料噴射弁に膠着することが多く、燃料
噴射弁をスリーブから引き抜く際、その膠着力に
負け、スリーブがその拡管部で破損することがあ
り、そのため点検整備の際に非常に厄介な事態を
惹起するという欠点があつた。 Therefore, the fuel injection valve is fitted into the tubular sleeve as a holder, but is often taken out of the engine for inspection and maintenance. On the other hand, in conventionally used fuel injection valves, the expanded tube part of the sleeve often sticks to the fuel injection valve due to overheating during operation of the fuel injection valve, and when the fuel injection valve is pulled out from the sleeve, However, due to the adhesion force, the sleeve may be damaged at the expanded tube portion, resulting in a very troublesome situation during inspection and maintenance.
そこで本考案は前記従来の欠点を解消するた
め、燃料噴射弁とスリーブ間が膠着した場合で
も、燃料の噴射弁を引き抜く際の分離力に打ち勝
つようにスリーブ本体をシリンダヘツド部材に強
固に固着し、燃料噴射弁の引き抜き時のスリーブ
拡管部の破損を防止することを目的としている。 Therefore, in order to solve the above-mentioned conventional drawbacks, the present invention firmly fixes the sleeve body to the cylinder head member so that even if the fuel injector and sleeve become stuck together, the sleeve body can overcome the separation force when the fuel injector is pulled out. The purpose of this is to prevent damage to the expansion part of the sleeve when the fuel injector is pulled out.
即ち、本考案は、燃料噴射弁１のスリーブ３の
先端垂直部を拡管して、その膨出突部１１Ａを、
シリンダヘツド２の凹部１２Ａに嵌着せしめた拡
管部分３Ａと、該スリーブ３の垂直胴部の少なく
とも中央部を拡管して、その膨出突部１１Ｂを、
シリンダヘツド２の凹部１２Ｂに嵌着せしめた拡
管部分３Ｂとを、夫々スリーブ３の垂直部の周囲
に設けて、該スリーブ３をシリンダヘツド２に強
固に固着せしめてなるデイーゼル機関の燃料噴射
弁のスリーブから構成される。 That is, in the present invention, the vertical end portion of the sleeve 3 of the fuel injection valve 1 is expanded to form the bulging protrusion 11A.
The expanded tube portion 3A fitted into the recess 12A of the cylinder head 2 and at least the central portion of the vertical body of the sleeve 3 are expanded to form the bulging protrusion 11B.
A fuel injection valve for a diesel engine is provided in which expanded tube portions 3B fitted into recesses 12B of the cylinder head 2 are provided around the vertical portions of the sleeves 3, and the sleeves 3 are firmly fixed to the cylinder head 2. Consists of a sleeve.
以下本考案の実施例を図面にもとづいて説明す
る。第１図は従来の燃料噴射弁要部の左半分を示
す一部断面の側面図、第２図及び第３図は本考案
の実施例に於ける燃料噴射弁スリーブの右半分を
示す、それぞれ拡管前及び拡管後の側断面図であ
る。 Embodiments of the present invention will be described below based on the drawings. FIG. 1 is a partial cross-sectional side view showing the left half of the main part of a conventional fuel injection valve, and FIGS. 2 and 3 show the right half of the fuel injection valve sleeve in an embodiment of the present invention, respectively. It is a side sectional view before pipe expansion and after pipe expansion.
先ず第１図の従来の燃料噴射弁１に於ては、燃
料噴射弁１はシリンダヘツド２に銅等の軟質金属
製の管状のスリーブ３を介して嵌着されており、
スリーブ３とシリンダヘツド２との嵌着部の上端
にはＯリング４を設けて、シリンダヘツド２に設
けられている燃料噴射弁１をその周囲から冷却水
通路５内の冷却水をシールしている。ここで燃料
噴射弁１はスリーブ３を介して冷却水通路５及び
冷却水ジエツト７により冷却されている。 First, in the conventional fuel injection valve 1 shown in FIG. 1, the fuel injection valve 1 is fitted into a cylinder head 2 via a tubular sleeve 3 made of a soft metal such as copper.
An O-ring 4 is provided at the upper end of the fitting portion between the sleeve 3 and the cylinder head 2 to seal the cooling water in the cooling water passage 5 from around the fuel injection valve 1 provided in the cylinder head 2. There is. Here, the fuel injection valve 1 is cooled by a cooling water passage 5 and a cooling water jet 7 via a sleeve 3.
そこでシリンダヘツド２に上記管状のスリーブ
３を固設する際には、スリーブ３をシリンダヘツ
ド２の固定部に嵌合の後、燃焼室６に面するシリ
ンダヘツド２との先端垂直固定部では、図示せる
ごとくシリンダヘツド２のスリーブ３との固定部
を段付とし、そのスリーブ３の拡管部分３Ａをプ
レス金具により拡管し、拡管部分３Ａの内径を燃
料噴射弁１の先端垂直固定部の径より僅かに大き
く形成し、点検整備のため燃料噴射弁１を機関外
に引き抜く際に、スリーブ３が一諸に抜け出さな
いようにし、その拡管部３Ａの上部と燃料噴射弁
１の間にパツキン１０を設けている。 Therefore, when fixing the tubular sleeve 3 to the cylinder head 2, after fitting the sleeve 3 to the fixed part of the cylinder head 2, at the vertical fixed part of the cylinder head 2 facing the combustion chamber 6, As shown in the figure, the part of the cylinder head 2 that is fixed to the sleeve 3 is stepped, and the expanding part 3A of the sleeve 3 is expanded using a press fitting, so that the inner diameter of the expanding part 3A is smaller than the diameter of the vertically securing part of the tip of the fuel injection valve 1. The sleeve 3 is formed slightly larger to prevent the sleeve 3 from falling out all at once when the fuel injector 1 is pulled out of the engine for inspection and maintenance, and a gasket 10 is installed between the upper part of the expanded tube portion 3A and the fuel injector 1. It is set up.
しかしながら燃料噴射弁１とスリーブ３の拡管
部の取付面で膠着を起した場合、燃料噴射弁１を
引き抜く際の分離力をささえきれず、膠着力に負
けてスリーブ３はその拡管部分３Ａで第１図にＢ
で示すように破損する恐れがある。 However, if a stalemate occurs between the mounting surfaces of the fuel injection valve 1 and the expanded tube portion of the sleeve 3, the separation force cannot be supported when the fuel injector 1 is pulled out, and the sleeve 3 succumbs to the adhesive force and the sleeve 3 B in Figure 1
There is a risk of damage as shown in .
次に第２図及び第３図に示す本考案の実施例に
於ては、第１図と同じ部品は、同じ部品番号で示
しているが、相違点としては、スリーブ３の燃焼
室６側の拡管部分３Ａの他に、スリーブ３の中央
の垂直胴部にも拡管部分３Ｂを設けたことであ
る。またＯリング４はシリンダヘツド２とスリー
ブ３の嵌着部に１個、また燃料噴射弁１とスリー
ブ３の嵌着部に１個別々に装着して、それぞれ水
及び油の流出入を防止している。 Next, in the embodiment of the present invention shown in FIGS. 2 and 3, the same parts as in FIG. In addition to the expanded tube portion 3A, an expanded tube portion 3B is also provided in the vertical body portion at the center of the sleeve 3. In addition, one O-ring 4 is attached to the fitting part of the cylinder head 2 and sleeve 3, and one O-ring 4 is attached to the fitting part of the fuel injection valve 1 and sleeve 3, respectively, to prevent water and oil from flowing in and out. ing.
そこで第２図はスリーブ３の拡管前の素材の状
態を示し、拡管部分３Ｂの素材内径をD1、ま
た、スリーブ３の内径をD2とし、拡管部分３Ｂ
の上端部から底部迄の深さをＨとしたとき、拡管
用のプレス拡管金具８の先端部分の先端面の外径
d1をd1＜D1とし、その先端部分の胴部径d2を、d2
＜D2とし、更にプレス拡管金具８先端からスト
ツプ面９までの高さｈを、ｈ＜Ｈのごとくする。
即ちプレス拡管金具８の先端部寸法d1，d2，ｈを
それに対応するスリーブ３の拡管部分３Ｂの素材
寸法D1，D2，Ｈよりそれぞれ適当に小さく設定
して矢印の方向に圧入し拡管を行えば、スリーブ
３の塑性変形により、膨出突部１１Ｂがシリンダ
ヘツド２の凹部１２Ｂに嵌着した第３図のごとき
拡管部分３Ｂに形成される。なお、これに先行し
て行なうスリーブ３の先端垂直部の拡管も、同様
の手法で、拡管部分３Ａの素材寸法に見合つたプ
レス拡管金具（図示省略）を圧入して拡管するこ
とにより、膨出突部１１Ａがシリンダヘツド２の
凹部１２Ａに嵌着した第３図のごとき拡管部分３
Ａに形成される。即ち、スリーブ３は、その先端
垂直部の拡管部分３Ａと中央の垂直胴部の拡管部
分３Ｂの２箇所がシリンダヘツド２の凹部に嵌着
するため、シリンダヘツド２に強固に固着され
る。 Therefore, Fig. 2 shows the state of the material of the sleeve 3 before expansion, and the inner diameter of the material of the expanded portion 3B is D 1 and the inner diameter of the sleeve 3 is D 2 .
When the depth from the top end to the bottom is H, the outer diameter of the tip end surface of the press tube expansion fitting 8 for tube expansion.
Let d 1 be d 1 < D 1 , and the body diameter d 2 of the tip portion is d 2
<D 2 , and the height h from the tip of the press tube expansion fitting 8 to the stop surface 9 is set such that h<H.
That is, the dimensions d 1 , d 2 , h of the tip end of the press tube expansion fitting 8 are set appropriately smaller than the material dimensions D 1 , D 2 , H of the corresponding expansion portion 3B of the sleeve 3, and the fitting is press-fitted in the direction of the arrow. When the tube is expanded, the sleeve 3 is plastically deformed, so that a bulging protrusion 11B is formed in the expanded tube portion 3B that fits into the recess 12B of the cylinder head 2, as shown in FIG. Note that the tube expansion of the vertical end portion of the sleeve 3, which is performed prior to this, is performed in the same manner by press-fitting a press tube expansion fitting (not shown) that matches the material size of the tube expansion portion 3A and expanding the tube. The expanded tube portion 3 as shown in FIG.
Formed in A. That is, the sleeve 3 is firmly fixed to the cylinder head 2 because its expanded tube portion 3A at its vertical end and expanded tube portion 3B at its central vertical body fit into the recessed portions of the cylinder head 2.
なお、上記実施例では、スリーブ３を、その先
端垂直部の拡管部分３Ａと中央の垂直胴部の拡管
部分３Ｂの２箇所でシリンダヘツド２に固着して
いるが、スリーブ３の垂直胴部を中央で２箇所以
上拡管したり、中央部と上端部の両方の部分で２
箇所以上拡管すれば、スリーブ３をより強固にシ
リンダヘツド２に固着しうることは言うまでもな
い。この場合の拡管方法も前述した手法で同じよ
うに行なえるので拡管場所が増加したからといつ
て製造が困難になるということがない。 In the above embodiment, the sleeve 3 is fixed to the cylinder head 2 at two locations: the expanded pipe portion 3A at the vertical end and the expanded pipe portion 3B at the vertical body in the center. Expand the pipe in two or more places in the center, or expand the pipe in two or more places at both the center and the upper end.
It goes without saying that if the tube is expanded at more than one point, the sleeve 3 can be more firmly fixed to the cylinder head 2. Since the tube expansion method in this case can be carried out in the same manner as described above, manufacturing will not become difficult even if the number of tube expansion locations increases.
本考案によれば、燃料噴射弁１のスリーブ３の
先端垂直部を拡管して、その膨出突部１１Ａを、
シリンダヘツド２の凹部１２Ａに嵌着せしめた拡
管部分３Ａと、該スリーブ３の垂直胴部の少なく
とも中央部を拡管して、その膨出突部１１Ｂを、
シリンダヘツド２の凹部１２Ｂに嵌着せしめた拡
管部分３Ｂとを、夫々スリーブ３の垂直部の周囲
に設けて、スリーブ３を少なくとも２箇所の拡管
部分でシリンダヘツド２に固着するようにしたの
で、スリーブ３を従来のものに較べてはるかに強
固にシリンダヘツド２に固着させることができ、
従つて燃料噴射弁の点検整備のための引き抜きの
際、燃料噴射弁とスリーブ本体とが膠着している
場合でも、スリーブ本体がその燃料噴射弁の引き
抜きによる分離力に打ち勝つてシリンダヘツドに
強固に固着したまま保持される。また、拡管部分
３Ｂと拡管部分３Ａとの距離が小さく、しかも拡
管部分３Ｂが、プレス拡管金具８の矢印方向（下
方向）の圧入で拡管されて、その膨出突部１１Ｂ
が凹部１２Ｂに嵌着すると同時に、燃料噴射弁の
引き抜き力よりも大幅に大きな力で下方に押し付
けられて、シリンダヘツドに固着しているので、
拡管部分３Ｂが燃焼面と同一の筒内圧の変形を
し、従つて熱歪や筒内圧によるシリンダヘツド燃
焼面の振動等によつて固着のゆるみを生ずること
がなく、スリーブをシリンダヘツドに強固な固着
状態で保持することができる。このため、特に燃
料噴射弁とスリーブの拡管部分が運転中に膠着し
た場合でも、燃料噴射弁引き抜きの際、その拡管
部分が破損する恐れがなくなるので、機関の点検
整備の際の作業性を向上させることができる。ま
た、スリーブ３の垂直胴部の中央部を拡管して、
その膨出突部１１Ｂをシリンダヘツド２の凹部１
２Ｂに嵌着させたので、冷却水ジエツト７のリン
グ状水路の水量が拡管部分３Ｂのシールで確保さ
れ、スリーブの冷却即ち燃焼噴射弁の冷却を効率
よく行なうことができる。 According to the present invention, the vertical end portion of the sleeve 3 of the fuel injection valve 1 is expanded, and the bulging protrusion 11A is
The expanded tube portion 3A fitted into the recess 12A of the cylinder head 2 and at least the central portion of the vertical body of the sleeve 3 are expanded to form the bulging protrusion 11B.
The expanded tube portions 3B fitted into the recesses 12B of the cylinder head 2 are provided around the vertical portions of the sleeve 3, so that the sleeve 3 is fixed to the cylinder head 2 at at least two expanded tube portions. The sleeve 3 can be fixed to the cylinder head 2 much more firmly than conventional ones,
Therefore, when the fuel injector is pulled out for inspection and maintenance, even if the fuel injector and the sleeve body are stuck together, the sleeve body can overcome the separation force caused by pulling out the fuel injector and firmly attach it to the cylinder head. It remains fixed. In addition, the distance between the tube expansion portion 3B and the tube expansion portion 3A is small, and the tube expansion portion 3B is expanded by press-fitting the press tube expansion fitting 8 in the direction of the arrow (downward), and its bulging protrusion 11B
At the same time as the fuel injector is fitted into the recess 12B, it is pressed downward with a force significantly greater than the pull-out force of the fuel injector and is fixed to the cylinder head.
The expanded tube portion 3B deforms at the same cylinder pressure as the combustion surface, and therefore does not loosen due to thermal distortion or vibration of the combustion surface of the cylinder head due to cylinder pressure, making it possible to firmly attach the sleeve to the cylinder head. It can be held in a fixed state. Therefore, even if the fuel injector and the expanded tube part of the sleeve become stuck during operation, there is no risk of the expanded tube part being damaged when the fuel injector is pulled out, improving work efficiency during engine inspection and maintenance. can be done. In addition, the central part of the vertical body of the sleeve 3 is expanded,
The bulging protrusion 11B is connected to the recess 1 of the cylinder head 2.
2B, the amount of water in the ring-shaped waterway of the cooling water jet 7 is secured by the seal of the expanded tube portion 3B, and the cooling of the sleeve, that is, the combustion injection valve, can be efficiently performed.
尚、本考案はデイーゼル機関、特に直接噴射式
デイーゼル機関の燃料噴射弁のホルダーに対して
有効である。 The present invention is effective for a fuel injection valve holder for a diesel engine, particularly a direct injection type diesel engine.
第１図は従来の燃料噴射弁要部の左半分を示す
一部断面の側面図、第２図及び第３図は本考案の
実施例に於ける燃料噴射弁のスリーブの右半分を
示すそれぞれ拡管前及び拡管後の側断面図であ
る。
１……燃料噴射弁、２……シリンダヘツド、３
……スリーブ、３Ａ，３Ｂ……拡管部分、６……
燃焼室、８……プレス拡管金具、１１Ａ，１１Ｂ
……膨出突部、１２Ａ，１２Ｂ……凹部。
FIG. 1 is a partial cross-sectional side view showing the left half of the main part of a conventional fuel injector, and FIGS. 2 and 3 show the right half of the sleeve of the fuel injector according to an embodiment of the present invention. It is a side sectional view before pipe expansion and after pipe expansion. 1...Fuel injection valve, 2...Cylinder head, 3
...Sleeve, 3A, 3B...Pipe expansion part, 6...
Combustion chamber, 8... Press tube expansion fitting, 11A, 11B
...bulging protrusion, 12A, 12B... recess.
Claims (1)
して、その膨出突部１１Ａを、シリンダヘツド２
の凹部１２Ａに嵌着せしめた拡管部分３Ａと、該
スリーブ３の垂直胴部の、シリンダヘツドに設け
られた冷却水ジエツト７よりも上部のシリンダヘ
ツドの壁部に形成された凹部１２Ｂに対向する部
分を拡管して、その膨出突部１１Ｂを、シリンダ
ヘツド２の凹部１２Ｂに嵌着せしめた拡管部分３
Ｂとを、夫々スリーブ３の垂直部の周囲に設け
て、該スリーブ３をシリンダヘツド２に強固に固
着せしめてなるデイーゼル機関の燃料噴射弁のス
リーブ。 The vertical end of the sleeve 3 of the fuel injection valve 1 is expanded and its bulging protrusion 11A is attached to the cylinder head 2.
The enlarged pipe portion 3A fitted in the recess 12A of the sleeve 3 faces the recess 12B formed in the wall of the cylinder head above the cooling water jet 7 provided in the cylinder head of the vertical body of the sleeve 3. Expanded pipe portion 3 in which the expanded protrusion 11B is fitted into the recess 12B of the cylinder head 2.
A sleeve for a fuel injection valve for a diesel engine, in which a sleeve B is provided around a vertical portion of a sleeve 3, and the sleeve 3 is firmly fixed to a cylinder head 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977129222U JPS6136776Y2 (en) | 1977-09-26 | 1977-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977129222U JPS6136776Y2 (en) | 1977-09-26 | 1977-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5454726U JPS5454726U (en) | 1979-04-16 |
| JPS6136776Y2 true JPS6136776Y2 (en) | 1986-10-24 |
Family
ID=29093666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977129222U Expired JPS6136776Y2 (en) | 1977-09-26 | 1977-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6136776Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0117647Y2 (en) * | 1980-04-30 | 1989-05-23 | ||
| KR100680785B1 (en) | 2005-12-14 | 2007-02-08 | 현대자동차주식회사 | A mounting structure of a injector tube in cylinder head |
| US11566580B1 (en) * | 2021-10-26 | 2023-01-31 | Progress Rail Locomotive Inc. | Cylinder head assembly having fuel injector sleeve for mid-deck reacting of injector clamping load |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505719A (en) * | 1973-05-22 | 1975-01-21 |
-
1977
- 1977-09-26 JP JP1977129222U patent/JPS6136776Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505719A (en) * | 1973-05-22 | 1975-01-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5454726U (en) | 1979-04-16 |
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