JPH0886259A - Mounting structure of fuel injection pipe for diesel engine - Google Patents
Mounting structure of fuel injection pipe for diesel engineInfo
- Publication number
- JPH0886259A JPH0886259A JP22285494A JP22285494A JPH0886259A JP H0886259 A JPH0886259 A JP H0886259A JP 22285494 A JP22285494 A JP 22285494A JP 22285494 A JP22285494 A JP 22285494A JP H0886259 A JPH0886259 A JP H0886259A
- Authority
- JP
- Japan
- Prior art keywords
- mounting
- hole
- fuel injection
- injection pipe
- seal cover
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
-
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料噴射パイプを取付
ける取付けナットとシールカバーとを有し、前記取付け
ナットがヘッドカバーを貫通する箇所をシールするディ
ーゼルエンジンの燃料噴射パイプの取付構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel injection pipe mounting structure for a diesel engine, which has a mounting nut for mounting a fuel injection pipe and a seal cover, and seals a portion where the mounting nut penetrates a head cover.
【０００２】[0002]
【従来の技術】例えば、図４に示すように、シリンダヘ
ッド１に取付けられヘッドカバー２の内側にある燃料噴
射ノズル３に燃料噴射パイプ４を取付ける場合、パイプ
状に形成された中間部５ａを有する取付ナット５により
燃料噴射パイプ４を噴射ノズル３に締結し、取付ナット
５の中間部５ａの外周とヘッドカバー２の取付孔９との
間をシールする表面をゴム等の弾性体で被覆したシール
部材６を設ける技術は知られている。ここで、符号３
ａ、３ｂはラバーリングを示している。2. Description of the Related Art For example, as shown in FIG. 4, when a fuel injection pipe 4 is attached to a fuel injection nozzle 3 attached to a cylinder head 1 and located inside a head cover 2, it has a pipe-shaped intermediate portion 5a. A sealing member in which the fuel injection pipe 4 is fastened to the injection nozzle 3 by the mounting nut 5, and the surface for sealing between the outer periphery of the intermediate portion 5a of the mounting nut 5 and the mounting hole 9 of the head cover 2 is covered with an elastic body such as rubber. The technique of providing 6 is known. Here, reference numeral 3
Reference numerals a and 3b denote rubber rings.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、例え
ば、１シリンダに４バルブを取付ける場合等ではレイア
ウト上から燃料噴射パイプを取付ける向きに制約を受
け、燃料噴射パイプとヘッドカバーの面とが直角になら
ない場合があり、この場合には燃料噴射パイプの取付
角、すなわち取付ナットの取付角の誤差が大となり易
く、シール部材を介して取付ナットを取付ける作業が面
倒でやりにくい作業になるという問題があった。However, for example, when four valves are mounted on one cylinder, the layout restricts the direction in which the fuel injection pipe is mounted, and the fuel injection pipe and the surface of the head cover are not at right angles. In this case, there is a problem that the error in the mounting angle of the fuel injection pipe, that is, the mounting angle of the mounting nut is likely to be large, and the work of mounting the mounting nut via the seal member is troublesome and difficult. .
【０００４】したがって、本発明は、燃料噴射パイプの
取付角度誤差が大でも取付けできる燃料噴射パイプの取
付構造を提供する事を目的としている。Therefore, an object of the present invention is to provide a mounting structure for a fuel injection pipe which can be mounted even if the mounting angle error of the fuel injection pipe is large.
【０００５】[0005]
【課題を解決するための手段】本発明によれば、燃料噴
射パイプを取付ける取付けナットとシールカバーとを有
し、シールカバーが前記取付けナットがヘッドカバーを
貫通する箇所をシールするディーゼルエンジンの燃料噴
射パイプの取付構造において、前記取付けナットはシー
ルカバーを貫通する箇所が球面状に形成されており、そ
のシールカバーは前記球面状部分が貫通する箇所に第１
のラバーリングを有する貫通孔を形成しており、その貫
通孔の近傍箇所のヘッドカバー側の面には第２のラバー
リングが設けられている。According to the present invention, a fuel injection for a diesel engine having a mounting nut for mounting a fuel injection pipe and a seal cover, the seal cover sealing a portion where the mounting nut penetrates the head cover. In the pipe mounting structure, the mounting nut is formed in a spherical shape at a portion penetrating the seal cover, and the seal cover has a first portion at a portion penetrating the spherical portion.
A through hole having a rubber ring is formed, and a second rubber ring is provided on the surface of the head cover side near the through hole.
【０００６】また、本発明によれば、前記シールカバー
は前記貫通孔に加えて取付孔を有しており、その取付穴
は貫通孔の方向に長孔形状に形成され、前記シールカバ
ーには、前記取付孔が１箇所設けられている。Further, according to the present invention, the seal cover has a mounting hole in addition to the through hole, and the mounting hole is formed in a long hole shape in the direction of the through hole, and the seal cover has The mounting hole is provided at one place.
【０００７】[0007]
【作用効果の説明】本発明は上記のように構成されてお
り、取付ナットの球面状部分がシールカバーの貫通孔を
貫通しているので燃料噴射パイプの取付角に誤差があっ
ても取付ナットの球面状部分で調整され、シールカバー
の貫通孔の内周に第１のラバーリングが取付けられてい
るので、オイル漏れが防止される。また、シールカバー
をヘッドカバーに取付ける取付孔は長孔になっているの
で、取付角の誤差に伴う位置のずれにも対応できる。The present invention is configured as described above, and since the spherical portion of the mounting nut penetrates the through hole of the seal cover, the mounting nut can be installed even if there is an error in the mounting angle of the fuel injection pipe. Since the first rubber ring is attached to the inner periphery of the through hole of the seal cover, the oil leakage is prevented. Further, since the mounting hole for mounting the seal cover on the head cover is a long hole, it is possible to cope with the positional deviation due to the error in the mounting angle.
【０００８】したがって、取付ナットで燃料噴射パイプ
を取付け、それからシールカバーを一箇所のボルトでヘ
ッドカバーに締結すれば、燃料噴射パイプは取付角度に
誤差があっても容易に取付けられる。Therefore, by mounting the fuel injection pipe with the mounting nut and then fastening the seal cover to the head cover with one bolt, the fuel injection pipe can be easily mounted even if there is an error in the mounting angle.
【０００９】[0009]
【実施例】以下、図面を参照して、本発明の実施例を説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図において、従来技術と同じ機能を有する
部材には同じ符号を付して、その都度の説明は省略す
る。In the drawings, members having the same functions as those in the prior art are designated by the same reference numerals and the description thereof is omitted.
【００１１】図１は本発明にかかるディーゼルエンジン
の燃料噴射パイプの取付構造の例を示すヘッドカバー部
分の側断面図を示し、ヘッドカバー２には燃料パイプ４
を噴射ノズル３に締結する取付ナット１５を挿入する取
付孔９が開けられている。FIG. 1 is a side sectional view of a head cover part showing an example of a structure for mounting a fuel injection pipe of a diesel engine according to the present invention.
A mounting hole 9 into which a mounting nut 15 that fastens the injection nozzle 3 is inserted is opened.
【００１２】また、その取付ナット１５は取付孔９をカ
バーするシールカバー１０の貫通孔１６を貫通する箇所
に球面状部分１５ａが形成されている。Further, the mounting nut 15 has a spherical portion 15a formed at a portion penetrating the through hole 16 of the seal cover 10 which covers the mounting hole 9.
【００１３】そして、シールカバー１０の貫通孔１６に
は、図２および図３を参照して、第１のラバーリング１
１を挿入する溝１１ａが形成され、シールカバー１０の
ヘッドカバー取付け側には第２のラバーリング１２を挿
入する溝１２ａが形成されている。Then, the first rubber ring 1 is provided in the through hole 16 of the seal cover 10 with reference to FIGS. 2 and 3.
1 is formed, and a groove 12a into which the second rubber ring 12 is inserted is formed on the head cover mounting side of the seal cover 10.
【００１４】また、シールカバー１０はヘッドカバー２
に取付ける取付孔１７が一か所に設けられ、その取付孔
１７は貫通孔１６の方向に長孔に形成されており、燃料
噴射パイプの取付ナットの向きの誤差に対応してシール
カバー１０の取付位置が移動できるようになっている。The seal cover 10 is the head cover 2
A mounting hole 17 for mounting the fuel injection pipe is provided at one place, and the mounting hole 17 is formed in a long hole in the direction of the through hole 16, and the mounting hole 17 of the seal cover 10 corresponds to the error in the orientation of the mounting nut of the fuel injection pipe. The mounting position can be moved.
【００１５】したがって、噴射ノズル３の取付の向き、
ヘッドカバー２の取付孔９の高さやシリンダヘッドに取
付ける場合の取付けけボルト８とヘッドカバー２の取付
孔との遊び等によって生ずる取付けナット１５とシール
カバー１０の貫通孔１６との角度誤差が取付けナット１
５の球面状部分１５ｂと貫通孔１６とで調整でき、オイ
ルに対しては第１のラバーリング１１によりシールされ
る。Therefore, the direction of attachment of the injection nozzle 3 is
The angle error between the mounting nut 15 and the through hole 16 of the seal cover 10 caused by the height of the mounting hole 9 of the head cover 2 and the play between the mounting bolt 8 and the mounting hole of the head cover 2 when mounting on the cylinder head is due to an angular error.
5 can be adjusted by the spherical portion 15b and the through hole 16, and the first rubber ring 11 seals against oil.
【００１６】また、貫通孔１６と取付けナット１５との
位置誤差に対しては、シールカバー１０をヘッドカバー
２に取付ける長孔１７により調整でき、オイルは第２の
ラバーリング１２でシールされる。The position error between the through hole 16 and the mounting nut 15 can be adjusted by the long hole 17 for mounting the seal cover 10 on the head cover 2, and the oil is sealed by the second rubber ring 12.
【００１７】よって、取付けナット１５に第１のラバー
リング１１および第２のラバーリング１２を取付けたシ
ールカバー１０を挿入し、噴射ノズル３に噴射パイプ４
を取付けナット１５で締結し、シールカバー１０をスタ
ド１３とナット１４とでヘッドカバー２に取付ければよ
く、取付作業は誤差に関係なく容易であり、オイル漏れ
もない。Accordingly, the seal cover 10 having the first rubber ring 11 and the second rubber ring 12 attached thereto is inserted into the mounting nut 15, and the injection pipe 3 is inserted into the injection nozzle 3.
It is sufficient to fasten the seal cover 10 to the head cover 2 with the stud 13 and the nut 14 by tightening the mounting nut 15 with the mounting nut 15, and the mounting work is easy regardless of the error, and there is no oil leakage.
【００１８】[0018]
【発明の効果】本発明は、上記のように構成されている
ので、以下の優れた効果を奏する。Since the present invention is constructed as described above, it has the following excellent effects.
【００１９】（１） 燃料噴射パイプとヘッドカバーと
の関係位置および角度の誤差があっても、取付ナットの
球面状部分とシールカバーとで調整されて容易に取付け
できる。 （２） ラバーリングでオイルをシールしているので、
オイル漏れがない。 （３） したがって、無理な取付のために燃料噴射パイ
プと噴射ノズルとの連結部から燃料が漏れることがな
く、取付作業性も向上する。(1) Even if there is an error in the relative position and angle between the fuel injection pipe and the head cover, the spherical shape of the mounting nut and the seal cover can be adjusted for easy mounting. (2) Since the oil is sealed with the rubber ring,
There is no oil leak. (3) Therefore, the fuel does not leak from the connecting portion between the fuel injection pipe and the injection nozzle due to the unreasonable mounting, and the mounting workability is also improved.
【図１】本発明の一実施例を示すヘッドカバー部分の側
断面図。FIG. 1 is a side sectional view of a head cover portion showing an embodiment of the present invention.
【図２】図１の要部の拡大平面図。FIG. 2 is an enlarged plan view of a main part of FIG.
【図３】図２のＡ−Ａ断面を示す図。FIG. 3 is a view showing a cross section taken along the line AA of FIG.
【図４】従来の技術の例を示すヘッドカバー部分の側断
面図。FIG. 4 is a side sectional view of a head cover portion showing an example of a conventional technique.
１…シリンダヘッド ２…ヘッドカバー ３…燃料噴射ノズル ４…燃料噴射パイプ ５、１５…取付ナット ６…シール部材 ８…取付ボルト １０…シールカバー １１…第１のラバーリング １２…第２のラバーリング １６…貫通孔 DESCRIPTION OF SYMBOLS 1 ... Cylinder head 2 ... Head cover 3 ... Fuel injection nozzle 4 ... Fuel injection pipe 5, 15 ... Mounting nut 6 ... Seal member 8 ... Mounting bolt 10 ... Seal cover 11 ... First rubber ring 12 ... Second rubber ring 16 … Through holes
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ１６Ｍ 1/026 Ｃ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location F16M 1/026 C
Claims (3)
とシールカバーとを有し、シールカバーが前記取付けナ
ットがヘッドカバーを貫通する箇所をシールするディー
ゼルエンジンの燃料噴射パイプの取付構造において、前
記取付けナットはシールカバーを貫通する箇所が球面状
に形成されており、そのシールカバーは前記球面状部分
が貫通する箇所に第１のラバーリングを有する貫通孔を
形成しており、その貫通孔の近傍箇所のヘッドカバー側
の面には第２のラバーリングが設けられていることを特
徴とするディーゼルエンジンの燃料噴射パイプの取付構
造。1. A mounting structure of a fuel injection pipe of a diesel engine, comprising: a mounting nut for mounting a fuel injection pipe; and a seal cover, wherein the seal cover seals a portion where the mounting nut penetrates a head cover. A portion penetrating the seal cover is formed in a spherical shape, and the seal cover has a through hole having a first rubber ring formed in a portion where the spherical portion penetrates. A structure for mounting a fuel injection pipe of a diesel engine, wherein a second rubber ring is provided on the surface on the head cover side.
取付孔を有しており、その取付穴は貫通孔の方向に長孔
形状に形成されている請求項１に記載のディーゼルエン
ジンの燃料噴射パイプの取付構造。2. The fuel for a diesel engine according to claim 1, wherein the seal cover has a mounting hole in addition to the through hole, and the mounting hole is formed in an elongated shape in the direction of the through hole. Injection pipe mounting structure.
箇所設けられている請求項２に記載のディーゼルエンジ
ンの燃料噴射パイプの取付構造。3. The seal cover has one mounting hole.
The mounting structure for a fuel injection pipe of a diesel engine according to claim 2, wherein the mounting structure is provided at a location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6222854A JP2858632B2 (en) | 1994-09-19 | 1994-09-19 | Mounting structure of fuel injection pipe for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6222854A JP2858632B2 (en) | 1994-09-19 | 1994-09-19 | Mounting structure of fuel injection pipe for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0886259A true JPH0886259A (en) | 1996-04-02 |
| JP2858632B2 JP2858632B2 (en) | 1999-02-17 |
Family
ID=16788945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6222854A Expired - Lifetime JP2858632B2 (en) | 1994-09-19 | 1994-09-19 | Mounting structure of fuel injection pipe for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2858632B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000517032A (en) * | 1997-06-25 | 2000-12-19 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Fuel injection device |
| JP2002089407A (en) * | 2000-07-11 | 2002-03-27 | Hino Motors Ltd | Fuel system for diesel engine |
| JP2003254027A (en) * | 2002-03-06 | 2003-09-10 | Yanmar Co Ltd | Upper part structure of engine |
| JP2008522073A (en) * | 2004-11-26 | 2008-06-26 | ルノー・エス・アー・エス | Automotive internal combustion engine including continuous diesel fuel recovery surface |
-
1994
- 1994-09-19 JP JP6222854A patent/JP2858632B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000517032A (en) * | 1997-06-25 | 2000-12-19 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Fuel injection device |
| JP2002089407A (en) * | 2000-07-11 | 2002-03-27 | Hino Motors Ltd | Fuel system for diesel engine |
| JP2003254027A (en) * | 2002-03-06 | 2003-09-10 | Yanmar Co Ltd | Upper part structure of engine |
| JP2008522073A (en) * | 2004-11-26 | 2008-06-26 | ルノー・エス・アー・エス | Automotive internal combustion engine including continuous diesel fuel recovery surface |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2858632B2 (en) | 1999-02-17 |
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