JPH08291778A - Installing structure of fuel piping in internal combustion engine - Google Patents
Installing structure of fuel piping in internal combustion engineInfo
- Publication number
- JPH08291778A JPH08291778A JP7119128A JP11912895A JPH08291778A JP H08291778 A JPH08291778 A JP H08291778A JP 7119128 A JP7119128 A JP 7119128A JP 11912895 A JP11912895 A JP 11912895A JP H08291778 A JPH08291778 A JP H08291778A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- delivery pipe
- mounting
- installing
- hole
- 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
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
【０００１】[0001]
【産業上の利用分野】この発明は内燃機関の燃料配管の
取付構造に係り、特にデリバリパイプのデリバリパイプ
取付面をシリンダヘッドのカムシャフトキャップ取付面
やシリンダヘッドカバー取付面に対して同一平面とする
とともに、シリンダヘッドに設けられる各取付用孔部の
軸方向を同一とし、加工作業の簡略化を図る内燃機関の
燃料配管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 pipe mounting structure for an internal combustion engine, and more particularly, a delivery pipe mounting surface of a delivery pipe is flush with a camshaft cap mounting surface of a cylinder head or a cylinder head cover mounting surface. At the same time, the present invention relates to a fuel pipe mounting structure for an internal combustion engine in which the mounting holes provided in the cylinder head have the same axial direction to simplify the working operation.
【０００２】[0002]
【従来の技術】内燃機関の燃料供給方策には、気化器に
よって混合気を生成して燃焼室内に供給するものや、燃
焼室内にインジェクタを指向させて燃料噴射を行うもの
等がある。2. Description of the Related Art As fuel supply measures for internal combustion engines, there are one that generates a mixture by a carburetor and supplies it to a combustion chamber, one that directs an injector into the combustion chamber to inject fuel.
【０００３】また、インジェクタを使用する内燃機関の
燃料配管は、燃料タンクとインジェクタ間にデリバリパ
イプを配設し、このデリバリパイプにて複数個のインジ
ェクタに燃料を分配供給している。Further, in a fuel pipe of an internal combustion engine using an injector, a delivery pipe is arranged between the fuel tank and the injector, and the fuel is distributed to the plurality of injectors by the delivery pipe.
【０００４】前記内燃機関の燃料配管の取付構造として
は、実開昭６３−６９７６８号公報に開示されるものが
ある。この公報に開示される電子燃料噴射式エンジンの
燃料配管取付構造は、複数の気筒を備え且つクランク軸
方向が車両前後方向に略平行となるようにして車両に搭
載されりるエンジン本体の側部に複数のインジェクタを
各気筒の配列方向に沿って列状に配置するとともに、各
インジェクタを略直管状の燃料配管により接続してなる
ものにおいて、エンジン本体と燃料配管との間隔が車両
後方側から車両前方側に向かうに従って拡開する如く設
定されている。As a mounting structure for the fuel pipe of the internal combustion engine, there is one disclosed in Japanese Utility Model Laid-Open No. 63-69768. A fuel pipe mounting structure for an electronic fuel injection engine disclosed in this publication has a plurality of cylinders, and a side portion of an engine body that is mounted on a vehicle so that a crankshaft direction is substantially parallel to a vehicle front-rear direction. A plurality of injectors are arranged in a row along the arrangement direction of each cylinder, and the injectors are connected by a substantially straight fuel pipe, and the distance between the engine body and the fuel pipe is from the vehicle rear side. It is set so as to widen toward the front side of the vehicle.
【０００５】また、実開昭６３−１４０１６８号公報に
開示されるものがある。この公報に開示される燃料デリ
バリ管付き内燃機関は、シリンダヘッドの側面における
各気筒の箇所に、燃料噴射弁の装着孔を設ける一方、シ
リンダヘッドの側面と略平行に配設した燃料デリバリ管
と、各燃料噴射弁用装着孔との間に燃料噴射弁を各々装
着し、且つ、シリンダヘッドの上面に、カム軸を覆うシ
リンダヘッドカバーを着脱自在に締結してなるものにお
いて、シリンダヘッドには、カム軸の下半分が嵌まる軸
受部を、シリンダヘッドカバーには、カム軸の上半分を
被嵌する軸受部を各々造形し、これら軸受部にてカム軸
を軸支する一方、燃料デリバリ管を、シリンダヘッドカ
バーに対して着脱可能に取付けている。Further, there is one disclosed in Japanese Utility Model Laid-Open No. 63-140168. The internal combustion engine with a fuel delivery pipe disclosed in this publication has mounting holes for fuel injection valves at the positions of the cylinders on the side surface of the cylinder head, and a fuel delivery pipe arranged substantially parallel to the side surface of the cylinder head. , A fuel injection valve is mounted between each of the fuel injection valve mounting holes, and a cylinder head cover that covers the cam shaft is detachably fastened to the upper surface of the cylinder head. A bearing part for fitting the lower half of the cam shaft is formed on the cylinder head cover, and a bearing part for fitting the upper half of the cam shaft is formed on the cylinder head cover. , Removably attached to the cylinder head cover.
【０００６】更に、実開平１−７１１６８号公報に開示
されるものがある。この公報に開示される燃料噴射装置
の取付け構造は、燃料を噴射器で噴射させるものにおい
て、噴射器へ燃料を配給するデリバリパイプの支持部と
シリンダヘッドの座面間に環状樹脂部材を介設し、環状
樹脂部材とシリンダヘッドの座面との間には環状樹脂部
材の径以上の径を有する座金部を介設している。Further, there is one disclosed in Japanese Utility Model Laid-Open No. 1-71168. In the structure for mounting the fuel injection device disclosed in this publication, in which the fuel is injected by the injector, an annular resin member is interposed between the support portion of the delivery pipe for delivering the fuel to the injector and the seat surface of the cylinder head. A washer portion having a diameter equal to or larger than the diameter of the annular resin member is provided between the annular resin member and the seat surface of the cylinder head.
【０００７】[0007]
【発明が解決しようとする課題】ところで、従来の内燃
機関の燃料配管の取付構造、特にデリバリパイプの固定
方策においては、図４に示す如く、デリバリパイプ１１
８がインシュレータ１３６を介して吸気マニホルド１０
６に固定用締付ボルト１４０により固定されている。By the way, in the conventional fuel pipe mounting structure of an internal combustion engine, particularly in the delivery pipe fixing method, as shown in FIG.
8 is an intake manifold 10 via an insulator 136.
It is fixed to the No. 6 by a fixing tightening bolt 140.
【０００８】このとき、吸気マニホルドのデリバリパイ
プ取付面が独立した加工面となっており、吸気マニホル
ド取付面やシリンダヘッドカバー取付面等の取付面に対
して同一な面を有していないものである。At this time, the delivery pipe mounting surface of the intake manifold is an independent processing surface, and does not have the same surface as the mounting surface such as the intake manifold mounting surface or the cylinder head cover mounting surface. .
【０００９】また、吸気マニホルドのデリバリパイプ取
付用のネジ加工において、加工方向が独立した方向とな
っており、この加工方向が吸気マニホルド取付用孔部や
カムシャフトキャップ取付用孔部、シリンダヘッドカバ
ー取付用孔部等の軸方向に対して同一となっていない。Further, in the screw processing for mounting the delivery pipe of the intake manifold, the processing directions are independent, and this processing direction is the intake manifold mounting hole, the camshaft cap mounting hole, and the cylinder head cover mounting. The holes are not the same in the axial direction.
【００１０】この結果、吸気マニホルドのデリバリパイ
プ取付面が独立した加工面となっていることによって他
の加工面と同時に加工作業を行うことができず、作業工
程が増加してコストが大となり、経済的に不利であると
いう不都合がある。As a result, since the delivery pipe mounting surface of the intake manifold is an independent processing surface, the processing work cannot be performed at the same time as the other processing surface, which increases the number of work steps and increases the cost. It has the disadvantage of being economically disadvantageous.
【００１１】また、吸気マニホルドのデリバリパイプ取
付用のネジ加工において、加工方向が独立した方向とな
っていることにより、他の孔部と同時に加工作業を行う
ことができず、作業工程が増加してコストが大となり、
経済的に不利であるとともに、固定用締付ボルトの締付
方向も独立することとなり、組付性が悪く、実用上不利
であるという不都合がある。Further, in the screw processing for attaching the delivery pipe of the intake manifold, since the processing directions are independent, it is not possible to perform the processing work at the same time as the other hole portions, which increases the work process. And the cost will increase,
In addition to being economically disadvantageous, the tightening direction of the fixing tightening bolt is also independent, resulting in poor assemblability and a disadvantage in practical use.
【００１２】[0012]
【課題を解決するための手段】そこで、この発明は、上
述不都合を除去するために、内燃機関のシリンダヘッド
上部にカムシャフトキャップによりカムシャフトを装着
するとともにカムシャフトキャップを包囲するシリンダ
ヘッドカバーをシリンダヘッド上部に装着し、前記内燃
機関の複数個の燃焼室内にデリバリパイプを介して燃料
を分配供給する内燃機関の燃料配管において、前記シリ
ンダヘッドのカムシャフトキャップ取付面とシリンダヘ
ッドカバー取付面とに対して同一平面を有すべく前記デ
リバリパイプのデリバリパイプ取付面を前記シリンダヘ
ッドに設けるとともに前記シリンダヘッドに設けられる
デリバリパイプ取付用第１孔部とカムシャフトキャップ
取付用第２孔部とシリンダヘッドカバー取付用第３孔部
との夫々の軸方向を同一とする構成としたことを特徴と
する。Therefore, in order to eliminate the above-mentioned inconvenience, the present invention provides a cylinder head cover for mounting a camshaft on a cylinder head upper portion of an internal combustion engine by a camshaft cap and surrounding the camshaft cap. In a fuel pipe of an internal combustion engine, which is mounted on the upper part of the head and supplies fuel to a plurality of combustion chambers of the internal combustion engine through delivery pipes, with respect to a camshaft cap mounting surface and a cylinder head cover mounting surface of the cylinder head. The delivery pipe mounting surface of the delivery pipe is provided on the cylinder head so as to have the same plane, and the delivery pipe mounting first hole, the camshaft cap mounting second hole, and the cylinder head cover mounting provided on the cylinder head. Axial direction with third hole for use Characterized by being configured to be the same.
【００１３】[0013]
【作用】上述の如く発明したことにより、デリバリパイ
プのデリバリパイプ取付面を形成する際には、デリバリ
パイプのデリバリパイプ取付面を、シリンダヘッドのカ
ムシャフトキャップ取付面やシリンダヘッドカバー取付
面に対して同一平面とすべく形成するとともに、シリン
ダヘッドに設けられるデリバリパイプ取付用第１孔部や
カムシャフトキャップ取付用第２孔部、シリンダヘッド
カバー取付用第３孔部の夫々の軸方向を同一とし、各取
付面や各孔部の加工作業を同時に行い、加工工数を減少
させてコストの低廉を果たしている。According to the invention as described above, when the delivery pipe mounting surface of the delivery pipe is formed, the delivery pipe mounting surface of the delivery pipe is attached to the camshaft cap mounting surface of the cylinder head or the cylinder head cover mounting surface. While forming the same plane, the delivery pipe mounting first hole, the camshaft cap mounting second hole, and the cylinder head cover mounting third hole provided on the cylinder head have the same axial direction. The processing work for each mounting surface and each hole is performed at the same time, reducing the processing man-hours and achieving low cost.
【００１４】[0014]
【実施例】以下図面に基づいてこの発明の実施例を詳細
に説明する。Embodiments of the present invention will be described in detail below with reference to the drawings.
【００１５】図１〜図３はこの発明の実施例を示すもの
である。図１において、２は内燃機関、４はシリンダヘ
ッド、６は吸気マニホルド、８はシリンダヘッドカバ
ー、１０はインジェクタである。1 to 3 show an embodiment of the present invention. In FIG. 1, 2 is an internal combustion engine, 4 is a cylinder head, 6 is an intake manifold, 8 is a cylinder head cover, and 10 is an injector.
【００１６】前記内燃機関２は、図１に示す如く、シリ
ンダヘッド４上部にカムシャフトキャップ１２によりカ
ムシャフト１４を装着するとともに、カムシャフトキャ
ップ１２を包囲するシリンダヘッドカバー８をシリンダ
ヘッド４上部に装着し、前記内燃機関２の複数個、例え
ば４個の燃焼室１６内にデリバリパイプ１８を介して燃
料を分配供給するものである。In the internal combustion engine 2, as shown in FIG. 1, a camshaft 14 is mounted on a cylinder head 4 by a camshaft cap 12, and a cylinder head cover 8 surrounding the camshaft cap 12 is mounted on the cylinder head 4. However, the fuel is distributed and supplied into the plurality of, for example, four combustion chambers 16 of the internal combustion engine 2 through the delivery pipes 18.
【００１７】そして、前記シリンダヘッド４のカムシャ
フトキャップ取付面２０とシリンダヘッドカバー取付面
２２とに対して同一平面を有すべく、前記デリバリパイ
プ１８のデリバリパイプ取付面２４を前記シリンダヘッ
ド４に設ける。A delivery pipe mounting surface 24 of the delivery pipe 18 is provided on the cylinder head 4 so that the camshaft cap mounting surface 20 and the cylinder head cover mounting surface 22 of the cylinder head 4 are flush with each other. .
【００１８】また、前記シリンダヘッド４に設けられる
デリバリパイプ１８取付用第１孔部２６とカムシャフト
キャップ１２取付用第２孔部２８とシリンダヘッドカバ
ー８取付用第３孔部３０との夫々の軸方向を同一とすべ
く構成とする。The respective shafts of the delivery pipe 18 mounting first hole 26, the camshaft cap 12 mounting second hole 28, and the cylinder head cover 8 mounting third hole 30 provided in the cylinder head 4 are provided. It is configured so that the directions are the same.
【００１９】詳述すれば、図１に示す如く、前記シリン
ダヘッド４上面部位にヘッド側取付面４ａを形成する際
に、このヘッド側取付面４ａを平坦とし、ヘッド側取付
面４ａを、カムシャフトキャップ取付面２０と、シリン
ダヘッドカバー取付面２２と、デリバリパイプ取付面２
４とに夫々機能させるものである。More specifically, as shown in FIG. 1, when the head-side mounting surface 4a is formed on the upper surface of the cylinder head 4, the head-side mounting surface 4a is made flat and the head-side mounting surface 4a is formed by a cam. Shaft cap mounting surface 20, cylinder head cover mounting surface 22, delivery pipe mounting surface 2
4 and function respectively.
【００２０】更に、図２に示す如く、前記シリンダヘッ
ド４上部から、複数個のデリバリパイプ１８取付用第１
孔部２６と、複数個のカムシャフトキャップ１２取付用
第２孔部２８と、複数個のシリンダヘッドカバー８取付
用第３孔部３０とを穿設する際に、夫々の軸方向を同一
とすべく穿設する。例えば第１〜第３孔部２６、２８、
３０の軸方向を前記ヘッド側取付面４ａに対して直交す
る方向とするものである。Further, as shown in FIG. 2, from the upper part of the cylinder head 4, a plurality of first delivery pipes 18 are attached.
When the hole portion 26, the plurality of camshaft cap 12 mounting second hole portions 28, and the plurality of cylinder head cover 8 mounting third hole portions 30 are bored, the respective axial directions are made the same. Drill as much as possible. For example, the first to third hole portions 26, 28,
The axial direction of 30 is a direction orthogonal to the head-side mounting surface 4a.
【００２１】そして、これら第１〜第３孔部２６、２
８、３０と同様に、４個の点火プラグ取付用第４孔部３
２を穿設し、この点火プラグ取付用第４孔部３２の軸方
向をも、第１〜第３孔部２６、２８、３０と同一とす
る。Then, these first to third holes 26, 2
Similar to 8 and 30, four spark plug mounting fourth holes 3
2 is bored, and the axial direction of the spark plug mounting fourth hole portion 32 is also the same as that of the first to third hole portions 26, 28, 30.
【００２２】なお符号３４は、前記デリバリパイプ１８
をシリンダヘッド４に装着する際に使用される取付腕
部、３６は前記シリンダヘッド４にデリバリパイプ１８
を装着する際に介設されるインシュレータ、３８は前記
シリンダヘッド４にインジェクタ１０を嵌合させる際に
介設されるクッション、４０はデリバリパイプ１８の固
定用第１締付ボルト、４２はカムシャフトキャップ１２
の固定用第２締付ボルト、４４は前記デリバリパイプ１
８に装着される燃料噴射圧力調整用レギュレータであ
る。Reference numeral 34 indicates the delivery pipe 18
Mounting arm portion used when mounting the cylinder head 4 on the cylinder head 4, and the delivery pipe 18 on the cylinder head 4.
An insulator that is provided when the injector 10 is mounted, a cushion 38 that is provided when the injector 10 is fitted to the cylinder head 4, a first tightening bolt 40 for fixing the delivery pipe 18, and a camshaft 42. Cap 12
Second tightening bolt for fixing, 44 is the delivery pipe 1
8 is a regulator for fuel injection pressure adjustment mounted on No. 8.
【００２３】次に作用について説明する。Next, the operation will be described.
【００２４】前記シリンダヘッド４への組付時には、カ
ムシャフトキャップ取付面２０にカムシャフトキャップ
１２を載置し、カムシャフトキャップ１２取付用第２孔
部２８に固定用第２締付ボルト４２を係合させてカムシ
ャフトキャップ取付面２０にカムシャフトキャップ１２
を固定するとともに、シリンダヘッドカバー取付面２２
にシリンダヘッドカバー８を載置し、シリンダヘッドカ
バー８取付用第３孔部３０に図示しない固定用締付ボル
トを係合させてシリンダヘッドカバー取付面２２にシリ
ンダヘッドカバー８を固定する。At the time of assembling to the cylinder head 4, the camshaft cap 12 is placed on the camshaft cap mounting surface 20, and the second fixing bolt 42 is fixed in the second hole portion 28 for mounting the camshaft cap 12. Engage to attach the camshaft cap 12 to the camshaft cap mounting surface 20.
Cylinder head cover mounting surface 22
The cylinder head cover 8 is mounted on the cylinder head cover 8 and the cylinder head cover 8 is fixed to the cylinder head cover mounting surface 22 by engaging a fixing tightening bolt (not shown) with the third hole 30 for mounting the cylinder head cover 8.
【００２５】また、前記シリンダヘッド４へのデリバリ
パイプ１８の組付時には、図３に示す如く、インジェク
タ１０の後端をデリバリパイプ１８に装着し、図１に示
す如く、シリンダヘッド４にクッション３８を介してイ
ンジェクタ１０の先端を装着させるとともに、デリバリ
パイプ取付面２４にインシュレータ３６を介してデリバ
リパイプ１８の取付腕部３４を載置し、デリバリパイプ
１８取付用第１孔部２６に固定用第１締付ボルト４０を
係合させてデリバリパイプ取付面２４にデリバリパイプ
１８を固定する。When assembling the delivery pipe 18 to the cylinder head 4, the rear end of the injector 10 is attached to the delivery pipe 18 as shown in FIG. 3, and the cushion 38 is attached to the cylinder head 4 as shown in FIG. While mounting the tip of the injector 10 via the mounting pipe 24, the mounting arm portion 34 of the delivery pipe 18 is mounted on the delivery pipe mounting surface 24 via the insulator 36, and the mounting arm 34 is mounted in the delivery pipe 18 mounting first hole portion 26. 1. The delivery pipe 18 is fixed to the delivery pipe mounting surface 24 by engaging the tightening bolt 40.
【００２６】これにより、前記カムシャフトキャップ取
付面２０とシリンダヘッドカバー取付面２２とデリバリ
パイプ取付面２４との各取付面を同一平面とすることが
でき、加工作業を同時にでき、加工工数が減少してコス
トを低廉とし得て、経済的に有利である。As a result, the mounting surfaces of the camshaft cap mounting surface 20, the cylinder head cover mounting surface 22, and the delivery pipe mounting surface 24 can be made to be the same plane, the processing operations can be performed simultaneously, and the processing man-hour is reduced. The cost can be reduced, which is economically advantageous.
【００２７】また、前記デリバリパイプ１８取付用第１
孔部２６とカムシャフトキャップ１２取付用第２孔部２
８とシリンダヘッドカバー８取付用第３孔部３０との夫
々の軸方向を同一とすることができることにより、第１
〜第３孔部２６、２８、３０の加工を同時に行うことが
でき、コストを低廉とし得るものである。The first for mounting the delivery pipe 18
Hole 26 and second hole 2 for mounting camshaft cap 12
Since the axial directions of the cylinder 8 and the third hole portion 30 for mounting the cylinder head cover 8 can be made to be the same,
-Processing of the 3rd hole parts 26, 28, 30 can be performed simultaneously, and cost can be reduced.
【００２８】更に、第１〜第３孔部２６、２８、３０へ
の固定用締付ボルトの締付方向が同一軸方向となること
により、組付性を向上し得て、実用上有利である。Further, since the tightening direction of the fixing tightening bolts to the first to third hole portions 26, 28 and 30 is the same axial direction, the assembling property can be improved, which is practically advantageous. is there.
【００２９】更にまた、第１〜第３孔部２６、２８、３
０の軸方向に対して点火プラグ取付用第４孔部３２の軸
方向をも同一とすることができることにより、第１〜第
３孔部２６、２８、３０及び第４孔部３２の加工を同時
に行うことができ、コストを低廉とし得るとともに、第
１〜第３孔部２６、２８、３０への固定用締付ボルトの
締付方向及び第４孔部３２への図示しない点火プラグの
締付方向が全て同一軸方向となり、組付性を向上し得
る。Furthermore, the first to third hole portions 26, 28, 3
Since the axial direction of the spark plug mounting fourth hole portion 32 can be the same with respect to the axial direction of 0, the machining of the first to third hole portions 26, 28, 30 and the fourth hole portion 32 can be performed. This can be performed simultaneously, and the cost can be reduced, and the tightening direction of the fastening bolts for fixing the first to third hole portions 26, 28 and 30 and the tightening of the ignition plug (not shown) to the fourth hole portion 32 can be performed. All the attaching directions are the same axial direction, which can improve the assembling property.
【００３０】[0030]
【発明の効果】以上詳細に説明した如くこの発明によれ
ば、内燃機関のシリンダヘッド上部にカムシャフトキャ
ップによりカムシャフトを装着するとともにカムシャフ
トキャップを包囲するシリンダヘッドカバーをシリンダ
ヘッド上部に装着し、内燃機関の複数個の燃焼室内にデ
リバリパイプを介して燃料を分配供給する内燃機関の燃
料配管において、シリンダヘッドのカムシャフトキャッ
プ取付面とシリンダヘッドカバー取付面とに対して同一
平面を有すべくデリバリパイプのデリバリパイプ取付面
をシリンダヘッドに設けるとともに、シリンダヘッドに
設けられるデリバリパイプ取付用第１孔部とカムシャフ
トキャップ取付用第２孔部とシリンダヘッドカバー取付
用第３孔部との夫々の軸方向を同一とする構成としたの
で、前記カムシャフトキャップ取付面とシリンダヘッド
カバー取付面とデリバリパイプ取付面との各取付面を同
一平面とすることができ、加工作業を同時にでき、加工
工数が減少してコストを低廉とし得て、経済的に有利で
ある。また、前記デリバリパイプ取付用第１孔部とカム
シャフトキャップ取付用第２孔部とシリンダヘッドカバ
ー取付用第３孔部との夫々の軸方向を同一とすることが
できることにより、第１〜第３孔部の加工を同時に行う
ことができ、コストを低廉とし得る。更に、第１〜第３
孔部への固定用締付ボルトの締付方向が同一軸方向とな
ることにより、組付性を向上し得て、実用上有利であ
る。更にまた、第１〜第３孔部の軸方向に対して点火プ
ラグ取付用第４孔部の軸方向をも同一とすれば、第１〜
第３孔部及び第４孔部の加工を同時に行うことができ、
コストを低廉とし得るとともに、第１〜第３孔部への固
定用締付ボルトの締付方向及び第４孔部への点火プラグ
の締付方向が全て同一軸方向となり、組付性を向上し得
る。As described in detail above, according to the present invention, the camshaft is mounted on the upper part of the cylinder head of the internal combustion engine by the camshaft cap, and the cylinder head cover surrounding the camshaft cap is mounted on the upper part of the cylinder head. In a fuel pipe of an internal combustion engine, which distributes fuel into a plurality of combustion chambers of the internal combustion engine through delivery pipes, the delivery should be flush with the camshaft cap mounting surface of the cylinder head and the cylinder head cover mounting surface. The delivery pipe mounting surface of the pipe is provided on the cylinder head, and each shaft of the delivery pipe mounting first hole, the camshaft cap mounting second hole, and the cylinder head cover mounting third hole provided on the cylinder head is provided. Since the direction is the same, The mounting surfaces of the top cap mounting surface, the cylinder head cover mounting surface, and the delivery pipe mounting surface can be made to be the same plane, and the processing work can be performed simultaneously, the processing man-hours can be reduced, the cost can be reduced, and it is economical. It is advantageous. Further, the first hole for mounting the delivery pipe, the second hole for mounting the camshaft cap, and the third hole for mounting the cylinder head cover can be made to have the same axial direction, so that the first to third parts are provided. The holes can be processed at the same time, and the cost can be reduced. Furthermore, the first to third
Since the tightening direction of the fixing tightening bolt in the hole is the same axial direction, the assembling property can be improved, which is practically advantageous. Furthermore, if the axial direction of the ignition plug mounting fourth hole is the same as the axial direction of the first to third holes,
The third hole and the fourth hole can be processed simultaneously,
The cost can be reduced, and the tightening direction of the fixing bolts to the 1st to 3rd holes and the direction of tightening the ignition plug to the 4th hole are all in the same axial direction, improving the assembling property. You can
【図１】この発明の実施例を示す内燃機関の燃料配管の
取付構造におけるデリバリパイプ取付部位の概略断面図
である。FIG. 1 is a schematic sectional view of a delivery pipe mounting portion in a fuel pipe mounting structure of an internal combustion engine showing an embodiment of the present invention.
【図２】シリンダヘッドの平面図である。FIG. 2 is a plan view of a cylinder head.
【図３】デリバリパイプへのインジェクタの組付状態を
示す概略斜視図である。FIG. 3 is a schematic perspective view showing a state where the injector is attached to the delivery pipe.
【図４】この発明の従来技術の吸気マニホルドへのデリ
バリパイプの組付状態を示す概略斜視図である。FIG. 4 is a schematic perspective view showing a state in which a delivery pipe is attached to an intake manifold according to the prior art of the present invention.
２ 内燃機関 ４ シリンダヘッド ６ 吸気マニホルド ８ シリンダヘッドカバー １０ インジェクタ １２ カムシャフトキャップ １４ カムシャフト １６ 燃焼室 １８ デリバリパイプ ２０ カムシャフトキャップ取付面 ２２ シリンダヘッドカバー取付面 ２４ デリバリパイプ取付面 ２６ デリバリパイプ取付用第１孔部 ２８ カムシャフトキャップ取付用第２孔部 ３０ シリンダヘッドカバー取付用第３孔部 ３２ 点火プラグ取付用第４孔部 ３４ 取付腕部 ３６ インシュレータ ３８ クッション ４０ 固定用第１締付ボルト ４２ 固定用第２締付ボルト ４４ 燃料噴射圧力調整用レギュレータ 2 Internal Combustion Engine 4 Cylinder Head 6 Intake Manifold 8 Cylinder Head Cover 10 Injector 12 Camshaft Cap 14 Camshaft 16 Combustion Chamber 18 Delivery Pipe 20 Camshaft Cap Mounting Surface 22 Cylinder Head Cover Mounting Surface 24 Delivery Pipe Mounting Surface 26 Delivery Pipe Mounting 1st Hole 28 Camshaft cap mounting second hole 30 Cylinder head cover mounting third hole 32 Spark plug mounting fourth hole 34 Mounting arm 36 Insulator 38 Cushion 40 Fixing first tightening bolt 42 Fixing first 2 Tightening bolt 44 Regulator for adjusting fuel injection pressure
Claims (1)
ャフトキャップによりカムシャフトを装着するとともに
カムシャフトキャップを包囲するシリンダヘッドカバー
をシリンダヘッド上部に装着し、前記内燃機関の複数個
の燃焼室内にデリバリパイプを介して燃料を分配供給す
る内燃機関の燃料配管において、前記シリンダヘッドの
カムシャフトキャップ取付面とシリンダヘッドカバー取
付面とに対して同一平面を有すべく前記デリバリパイプ
のデリバリパイプ取付面を前記シリンダヘッドに設ける
とともに前記シリンダヘッドに設けられるデリバリパイ
プ取付用第１孔部とカムシャフトキャップ取付用第２孔
部とシリンダヘッドカバー取付用第３孔部との夫々の軸
方向を同一とする構成としたことを特徴とする内燃機関
の燃料配管の取付構造。1. A camshaft cap is mounted on an upper part of a cylinder head of an internal combustion engine, and a cylinder head cover surrounding the camshaft cap is mounted on an upper part of the cylinder head, and delivery pipes are provided in a plurality of combustion chambers of the internal combustion engine. In a fuel pipe of an internal combustion engine that distributes and supplies fuel through a delivery pipe mounting surface of the delivery pipe, the delivery pipe mounting surface of the delivery pipe should be flush with the camshaft cap mounting surface of the cylinder head and the cylinder head cover mounting surface. The delivery pipe mounting first hole, the camshaft cap mounting second hole, and the cylinder head cover mounting third hole provided on the head and on the cylinder head have the same axial direction. A structure for mounting a fuel pipe of an internal combustion engine, characterized by Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11912895A JP3449037B2 (en) | 1995-04-20 | 1995-04-20 | Mounting structure of fuel pipe for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11912895A JP3449037B2 (en) | 1995-04-20 | 1995-04-20 | Mounting structure of fuel pipe for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08291778A true JPH08291778A (en) | 1996-11-05 |
| JP3449037B2 JP3449037B2 (en) | 2003-09-22 |
Family
ID=14753637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11912895A Expired - Fee Related JP3449037B2 (en) | 1995-04-20 | 1995-04-20 | Mounting structure of fuel pipe for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3449037B2 (en) |
-
1995
- 1995-04-20 JP JP11912895A patent/JP3449037B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3449037B2 (en) | 2003-09-22 |
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