JPH10160079A - Common rail - Google Patents
Common railInfo
- Publication number
- JPH10160079A JPH10160079A JP9013141A JP1314197A JPH10160079A JP H10160079 A JPH10160079 A JP H10160079A JP 9013141 A JP9013141 A JP 9013141A JP 1314197 A JP1314197 A JP 1314197A JP H10160079 A JPH10160079 A JP H10160079A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- flow passage
- rail
- boss
- common rail
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、特にディーゼル内
燃機関における１０００ｋｇｆ／ｃｍ２以上にもおよ
び、かつ高圧流体を供給する高圧燃料多岐管或いはブロ
ック・レール等のようなコモンレールに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a common rail such as a high-pressure fuel manifold or a block rail which supplies a high-pressure fluid and which has a pressure of 1000 kgf / cm 2 or more, particularly in a diesel internal combustion engine.
【０００２】[0002]
【従来の技術】従来、この種のコモンレールとしては、
図６に示すように、軸芯内部に流通路１１′を有する本
管レール１１の周壁部に、前記流通路１１′に連通する
貫孔１２′を有しかつナットにより分岐枝管や分岐金具
のような分岐接続体が接続されるボス１２を所定の間隔
に突設した構造となしたものや、図７に示すように内圧
疲労強度をより高めるためにボス１２の付根部に袴１３
を設けた構造のものが知られている。袴１３は本管レー
ル流通路に作用する内圧と、ボスの貫孔に作用する内圧
により合成された力による貫孔１２′の流通路１１′側
の周縁に発生する最大応力を低くするために設けるもの
である。このような構造のコモンレールは、いずれも本
管レール１１の流通路１１′の中心とボス１２の貫孔１
２′の中心とが一致した構造となっている。2. Description of the Related Art Conventionally, as a common rail of this type,
As shown in FIG. 6, a main branch rail 11 having a flow passage 11 'inside the shaft has a through hole 12' communicating with the flow passage 11 ', and a branch branch pipe or a branch fitting provided with a nut. The boss 12 to which the branch connection body is connected is protruded at a predetermined interval, or as shown in FIG. 7, a hakama 13 is provided at the base of the boss 12 to further increase the internal pressure fatigue strength.
Is known. The hakama 13 is used to reduce the maximum stress generated on the peripheral edge of the through hole 12 ′ on the side of the flow passage 11 ′ due to the combined force of the internal pressure acting on the main rail flow passage and the internal pressure acting on the through hole of the boss. It is provided. Each of the common rails having such a structure has a through hole 1 of a boss 12 and a center of a flow passage 11 ′ of a main rail 11.
The structure matches the center of 2 '.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、本管レ
ール１１の流通路１１′の中心とボス１２の貫孔１２′
の中心が一致した構造となした従来のコモンレールの場
合、図６に示す袴１３を持たない構造のコモンレール、
図７に示す袴１３を設けたコモンレールのいずれも、１
０００ｋｇｆ／ｃｍ２以上にもおよぶ高圧流体の絶えず
繰返される供給圧力の急激な変動に起因して、ボス１２
の貫孔１２′の本管レール流通路１１′開口端縁部Ｐ′
に最も大きな応力が発生し、前記開口端縁部Ｐ′が起点
となって変形や疲労による亀裂が生じ易く、燃料の洩れ
を招く可能性があった。However, the center of the flow passage 11 'of the main pipe rail 11 and the through-hole 12' of the boss 12 are not provided.
In the case of a conventional common rail having a structure in which the centers of the common rails coincide with each other, a common rail having a structure without the hakama 13 shown in FIG.
Each of the common rails provided with the hakama 13 shown in FIG.
Due to the constantly and rapidly changing supply pressure of the high pressure fluid of over 000 kgf / cm 2 , the boss 12
Opening edge P 'of the main rail flow passage 11' of the through hole 12 '
In this case, the largest stress is generated, and the opening edge P 'is used as a starting point to easily cause a crack due to deformation or fatigue, which may lead to fuel leakage.
【０００４】本発明は従来技術の有する前記欠点を解消
するためになされたものであり、ボスの貫孔を流通路の
径方向に偏心させることによって該貫孔の本管レール流
通路開口端縁部に発生する最大応力値を下げて内圧疲労
強度をより向上させることが可能なコモンレールを提供
することを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art. The boss is eccentric in the radial direction of the flow passage so that the through-hole of the boss is opened at the edge of the main rail flow passage opening. It is an object of the present invention to provide a common rail capable of lowering a maximum stress value generated in a portion to further improve internal pressure fatigue strength.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するため、軸芯内部に流通路を有し、該流通路に連通す
る貫孔を有するボスを外周面に軸芯とほぼ直角に突設し
たコモンレールにおいて、前記貫孔を流通路の径方向に
偏心させた構造となしたことを特徴とするもので、本発
明では前記ボスの付根部に袴を設けずかつ、貫孔は断面
真円形である。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a boss having a flow passage inside a shaft core and having a through hole communicating with the flow passage on an outer peripheral surface of the boss substantially at right angles to the shaft core. In the projecting common rail, the through hole is eccentric in the radial direction of the flow passage, and in the present invention, a hakama is not provided at the root of the boss, and the through hole has a cross section. It is a perfect circle.
【０００６】上記のごとく、ボスの貫孔の中心を流通路
の径方向に偏心させることにより、該貫孔の本管レール
流通路開口端縁部に発生する最大応力値を下げ内圧疲労
強度を向上させる。As described above, by eccentricizing the center of the through hole of the boss in the radial direction of the flow passage, the maximum stress value generated at the opening edge of the main rail flow passage opening of the through hole is reduced, and the internal pressure fatigue strength is reduced. Improve.
【０００７】本発明においては、上述の通りボスの貫孔
の中心を流通路の径方向に偏心させて、本管レール流通
路の中心から径方向に見て本管レール開口端縁部の形状
が、孔の長径方向を本管レールの管径方向に向けた楕円
形としたのは本発明者が多くの実験を繰返して得られた
結果に基づくものである。すなわち、本発明者は、前記
の貫孔の本管レール開口端縁部に発生する最大応力値の
低減を目的として、実際のコモンレールの本管レールに
使用される断面円形の本管レールを供試材に使用し、そ
の供試材に真円形と楕円形状の貫孔を設け、真円形の貫
孔を設けた供試材については該貫孔を流通路の径方向に
偏心させたものと、該貫孔を流通路の中心と一致させた
ものとを準備し、また楕円孔については孔の長径方向の
向きを本管レールの管軸方向に設けたものを準備し、各
本管レールに内圧をかけた場合のそれぞれの応力集中部
と最大応力値を調べた。その結果、断面形状が真円形の
貫孔を断面円形の本管レールの流通路の中心と一致させ
て設けた場合には、前記したごとく当該貫孔の開口部の
管軸方向両端縁部に大きな応力が発生したのに対し、ボ
スの貫孔の中心を流通路の径方向に偏心させて、本管レ
ール流通路の中心から径方向に見て本管レール開口端縁
部の形状が、孔の長径方向を本管レールの管径方向に向
けた楕円形とした場合には、当該楕円形の本管レール内
周側開口部の管軸方向両端部に前記真円形の貫孔を断面
円形の本管レールの流通路の中心と一致させた場合の応
力値よりはるかに低い応力値に減少できた。なお、楕円
孔でも、孔の向き（長径方向）を断面円形の本管レール
の管軸方向に形成した場合には、該貫孔の本管レール内
周側開口端縁部に前記真円形の貫孔を断面円形の本管レ
ールの流通路の中心と一致させた場合よりも遥かに大き
な応力が発生し、全く採用できないことが判明した。In the present invention, as described above, the center of the through hole of the boss is eccentric in the radial direction of the flow passage, and the shape of the opening edge of the main rail opening is viewed radially from the center of the main rail flow passage. However, the reason why the major axis direction of the hole is an elliptical shape in which the major axis direction is oriented in the radial direction of the main pipe rail is based on the result obtained by repeating various experiments by the present inventor. In other words, the present inventor has provided a main rail having a circular cross section used for an actual main rail of a common rail for the purpose of reducing the maximum stress value generated at the opening edge of the main rail opening of the through hole. Used in the test material, the test material is provided with a perfect circular and elliptical through-hole, the test material provided with a perfect circular through-hole, the through-hole is eccentric in the radial direction of the flow passage , The through-hole of which is aligned with the center of the flow passage, and for the elliptical hole, the one in which the major axis direction of the hole is provided in the pipe axis direction of the main pipe rail is prepared. The stress concentration portion and the maximum stress value when each internal pressure was applied to the steel were examined. As a result, when a through-hole whose cross-sectional shape is a perfect circle is provided so as to coincide with the center of the flow passage of the main pipe rail having a circular cross-section, as described above, both ends of the opening of the through-hole in the axial direction of the tube are provided. While a large stress was generated, the center of the through hole of the boss was decentered in the radial direction of the flow passage, and the shape of the main rail opening edge when viewed radially from the center of the main rail flow passage, In the case where the major axis direction of the hole is an elliptical shape oriented in the tube radial direction of the main pipe rail, the true circular through hole is cross-sectionally formed at both ends in the pipe axis direction of the inner peripheral side opening of the oval main rail. The stress value can be reduced to a much lower value than the stress value when it is matched with the center of the flow passage of the circular main rail. In the case of an elliptical hole as well, when the direction of the hole (the major axis direction) is formed in the tube axis direction of the main pipe rail having a circular cross section, the true circular shape is formed on the inner peripheral side opening edge of the through hole of the main pipe rail. It was found that much larger stress was generated than when the through-hole was aligned with the center of the flow passage of the main pipe rail having a circular cross section, and it was found that it could not be adopted at all.
【０００８】[0008]
【発明の実施の形態】図１は本発明に係るコモンレール
を例示したもので、（Ａ）はコモンレールの一部を示す
正面図、（Ｂ）は（Ａ）のイーイ線上の縦断側面図、図
２は同じく本発明の他のコモンレールを例示したもの
で、（Ａ）はコモンレールの一部を示す正面図、（Ｂ）
は（Ａ）のローロ線上の縦断側面図、図３は本発明を説
明するために袴を設けたコモンレールを例示したもの
で、（Ａ）はコモンレールの一部を示す正面図、（Ｂ）
は（Ａ）のハーハ線上の縦断側面図、図４は本発明のさ
らに他のコモンレールを例示したもので、（Ａ）は縦断
面図、（Ｂ）は（Ａ）の本管レールの流通路の中心から
径方向に見た貫孔の開口端縁部形状を示す図、図５は本
発明のさらに別のコモンレールを例示したもので、
（Ａ）は縦断面図、（Ｂ）は（Ａ）の本管レールの流通
路の中心から径方向に見た貫孔の開口端縁部形状を示す
図であり、１はコモンレールとしての本管レール、１−
１は流通路、２はナットにより分岐枝管や分岐金具のよ
うな分岐接続体（図示せず）が接続されるボス、２−１
は貫孔、２−１ａは螺子部、３は袴である。1 shows an example of a common rail according to the present invention. FIG. 1 (A) is a front view showing a part of the common rail, and FIG. 1 (B) is a vertical sectional side view on the yy line of FIG. 1 (A). 2 shows another example of the common rail of the present invention, (A) is a front view showing a part of the common rail, (B).
FIG. 3A is a vertical side view on the roll line of FIG. 3A, FIG. 3 illustrates a common rail provided with a skirt for explaining the present invention, FIG. 3A is a front view showing a part of the common rail, and FIG.
FIG. 4A is a vertical cross-sectional view on the Harha line of FIG. 4A, and FIG. 4 illustrates still another common rail of the present invention. FIG. 4A is a vertical cross-sectional view, and FIG. The figure which shows the opening edge part shape of the through-hole seen from the center of the radial direction, FIG. 5 illustrates another common rail of this invention,
(A) is a longitudinal sectional view, (B) is a diagram showing the shape of the opening edge of the through-hole viewed from the center of the flow passage of the main rail in (A), and 1 is a book as a common rail. Tube rail, 1-
1 is a flow passage, 2 is a boss to which a branch connector (not shown) such as a branch pipe or a branch fitting is connected by a nut, and 2-1.
Is a through hole, 2-1a is a screw portion, and 3 is a hakama.
【０００９】図１、図２に示す本管レール１は、管径３
０ｍ／ｍ程度以下の圧力配管用炭素鋼管あるいはステン
レス鋼管などの厚肉鋼管材からなるものであって、例え
ば管径２０ｍ／ｍ、肉厚８ｍ／ｍ程度の比較的厚肉で細
径の金属管であって、その軸芯内部を流通路１−１とな
して軸方向の周壁部に、該流通路１−１の軸芯とΔｌだ
け偏心して連通する貫孔２−１を有するボス２を軸芯と
ほぼ直角に突設したものである。ここで、ボス２の貫孔
２−１の偏心量Δｌとしては、特に限定するものではな
く、図２に示すごとく本管レールの流通路１−１の内壁
面の接線と貫孔２−１の外側の内壁面の接線がほぼ一致
する程度とすることができる。なお貫孔２−１の大きさ
は、燃料の最大噴射量、噴射圧力、脈動周波数、圧力変
動幅、本管レール１の直径、肉厚等に応じて適宜定め
る。The main pipe rail 1 shown in FIGS.
It is made of a thick steel pipe material such as a carbon steel pipe or a stainless steel pipe for a pressure pipe having a pipe diameter of about 0 m / m or less, and has a relatively thick and small diameter metal having a pipe diameter of about 20 m / m and a wall thickness of about 8 m / m. A boss 2 having a through-hole 2-1 eccentrically communicating with the axis of the flow passage 1-1 by Δl on the peripheral wall in the axial direction, with the inside of the axis serving as a flow passage 1-1. Are projected substantially at right angles to the axis. Here, the eccentric amount Δl of the through hole 2-1 of the boss 2 is not particularly limited, and as shown in FIG. 2, the tangential line of the inner wall surface of the flow passage 1-1 of the main rail and the through hole 2-1. The tangents of the inner wall surfaces on the outer side of the outermost surface can be substantially matched. The size of the through hole 2-1 is appropriately determined according to the maximum fuel injection amount, injection pressure, pulsation frequency, pressure fluctuation width, diameter and wall thickness of the main pipe rail 1, and the like.
【００１０】本発明は上記した図１および図２に示す構
造のみならず、図４および図５に示す構造とすることも
できる。すなわち、図４においてはボス２の貫孔２−１
の偏心量Δｌを本管レールの流通路１−１の内壁面の接
線が貫孔２−１の内側の内壁面の接線より僅かに内方に
位置する程度として、貫孔２−１の本管レール流通路１
−１開口端縁部の形状を図４の（Ｂ）に示すように楕円
形とし、また図５では本管レールの貫孔２−１は斜めに
設けられて前記流通路１−１の内壁面の接線方向に向い
た図４と同様な構造とすることもできる。In the present invention, not only the structure shown in FIGS. 1 and 2 but also the structure shown in FIGS. That is, in FIG.
Of the through hole 2-1 is determined such that the tangent to the inner wall surface of the flow path 1-1 of the main pipe rail is located slightly inward from the tangent to the inner wall surface inside the through hole 2-1. Pipe rail flow path 1
-1 The shape of the opening edge is made elliptical as shown in FIG. 4B, and in FIG. 5, the through hole 2-1 of the main rail is provided obliquely so that A structure similar to that of FIG. 4 which is oriented in the tangential direction of the wall surface may be employed.
【００１１】また本発明の効果を説明するため比較試料
として図３のようなコモンレールを作製した。図３にお
いては、ボス２の貫孔２−１を本管レール１の流通路１
−１の径方向に、図１の例と同様にΔｌだけ偏心させた
が該ボスの付根部には袴３を設けた構造とした。次に同
一材質で同一寸法ではあるが、それぞれの形状を図１乃
至図７のように構成（但し肉厚は薄くして作製した）し
たコモンレールについて、同じ圧力の流体を、供給圧力
を繰返し急激に変動させつつ供給して内圧疲労強度（疲
労破壊するまでの繰返し回数）を調べた。In order to explain the effect of the present invention, a common rail as shown in FIG. 3 was prepared as a comparative sample. In FIG. 3, the through hole 2-1 of the boss 2 is connected to the flow passage 1 of the main rail 1.
As in the example of FIG. 1, the boss was eccentric in the radial direction of -1 by Δl, but a skirt 3 was provided at the base of the boss. Next, for a common rail having the same material and the same dimensions, but having the respective shapes as shown in FIGS. The internal pressure fatigue strength (the number of repetitions until fatigue fracture) was investigated by supplying the steel while varying the pressure.
【００１２】その結果、図６に示すコモンレールは、開
口端縁部Ｐ′が起点となって早期に疲労破壊し、図７の
コモンレールは図６の例に比べ繰返し回数は若干多くな
るが、疲労破壊してしまった。As a result, the common rail shown in FIG. 6 is broken at an early stage from the opening edge P 'as a starting point, and the common rail shown in FIG. It has been destroyed.
【００１３】一方、図１および図２、図４および図５に
示す本発明にかかるコモンレールは、図６および図７が
疲労破壊した後もかなりの繰返し回数疲労破壊すること
はなかった。On the other hand, the common rails according to the present invention shown in FIGS. 1 and 2, and FIGS. 4 and 5 did not undergo considerable number of repetitive fatigue failures even after the fatigue failure in FIGS. 6 and 7.
【００１４】一方、図３に示すコモンレールでは、図１
に示すコモンレールとほぼ同じ繰返し回数を経ることが
できた。しかし上記したように、肉厚を薄くした場合は
開口端縁部Ｐが起点となって図１のものより早期に疲労
破壊してしまった。このことは、ボス２の貫孔２−１を
流通路１−１の径方向に偏心させた場合、袴３の有無は
内圧疲労強度の向上には関係なく、かえって製品の重量
を増し生産性が悪くなるという別個の問題を提起するこ
とを意味する。On the other hand, in the common rail shown in FIG.
The number of repetitions was almost the same as that of the common rail shown in Fig. 7. However, as described above, when the wall thickness was reduced, the opening edge P was the starting point, and the fatigue fracture occurred earlier than that in FIG. This means that when the through hole 2-1 of the boss 2 is eccentric in the radial direction of the flow passage 1-1, the presence or absence of the hakama 3 does not increase the internal pressure fatigue strength, but rather increases the weight of the product and increases productivity. Raises the separate problem of becoming worse.
【００１５】[0015]
【発明の効果】以上説明したように本発明に係るコモン
レールは、ボスの貫孔の中心を流通路の径方向に偏心さ
せて本管レール流通路の中心から径方向に見て本管レー
ル開口端縁部の形状が、孔の長径方向を本管レールの管
径方向に向けた楕円形としたことにより、ボスの貫孔の
本管レール流通路開口端縁部に発生する最大応力値が下
がり内圧疲労強度が向上する。従って、本発明に係るコ
モンレールは、本管レールの流通路の中心とボスの貫孔
の中心が一致した構造となした従来のコモンレールに比
べ耐久性に優れ、極めて有用性に富むものである。As described above, in the common rail according to the present invention, the center of the through hole of the boss is eccentric in the radial direction of the flow passage so that the main rail opening is viewed radially from the center of the main rail flow passage. Since the shape of the edge is elliptical with the major axis of the hole oriented in the radial direction of the main rail, the maximum stress value generated at the opening edge of the main rail flow passage opening of the boss through hole is reduced. Lower internal pressure fatigue strength is improved. Therefore, the common rail according to the present invention is superior in durability and extremely useful as compared with the conventional common rail having a structure in which the center of the flow passage of the main pipe rail and the center of the through hole of the boss coincide with each other.
【図１】本発明に係るコモンレールを例示したもので、
（Ａ）はコモンレールの一部を示す正面図、（Ｂ）は
（Ａ）のイーイ線上の縦断側面図である。FIG. 1 illustrates a common rail according to the present invention;
(A) is a front view showing a part of the common rail, and (B) is a vertical sectional side view on the yy line of (A).
【図２】同じく本発明の他のコモンレールを例示したも
ので、（Ａ）はコモンレールの一部を示す正面図、
（Ｂ）は（Ａ）のローロ線上の縦断側面図である。FIG. 2 illustrates another common rail of the present invention, wherein (A) is a front view showing a part of the common rail,
(B) is a vertical sectional side view on a roll line of (A).
【図３】本発明を説明するために参考試料として袴を設
けたコモンレールを例示したもので、（Ａ）はコモンレ
ールの一部を示す正面図、（Ｂ）は（Ａ）のハーハ線上
の縦断側面図である。FIG. 3 illustrates a common rail provided with a skirt as a reference sample for explaining the present invention, wherein (A) is a front view showing a part of the common rail, and (B) is a longitudinal section on the haha line of (A). It is a side view.
【図４】本発明のさらに他のコモンレールを例示したも
ので、（Ａ）は縦断面図、（Ｂ）は（Ａ）の本管レール
の流通路の中心から径方向に見た貫孔の開口端縁部形状
を示す図である。4A and 4B illustrate still another common rail of the present invention, wherein FIG. 4A is a longitudinal sectional view, and FIG. 4B is a through-hole viewed radially from the center of a flow passage of the main pipe rail in FIG. It is a figure which shows an opening edge part shape.
【図５】本発明のさらに別のコモンレールを例示したも
ので、（Ａ）は縦断面図、（Ｂ）は（Ａ）の本管レール
の流通路の中心から径方向に見た貫孔の開口端縁部形状
を示す図である。5A and 5B illustrate still another common rail according to the present invention, wherein FIG. 5A is a longitudinal sectional view, and FIG. 5B is a through-hole viewed radially from the center of a flow passage of the main pipe rail in FIG. It is a figure which shows an opening edge part shape.
【図６】本発明の対象とする従来のコモンレールを例示
したもので、（Ａ）はコモンレールの一部を示す正面
図、（Ｂ）は（Ａ）のイーイ線上の縦断側面図である。FIGS. 6A and 6B illustrate a conventional common rail to which the present invention is applied. FIG. 6A is a front view showing a part of the common rail, and FIG. 6B is a vertical sectional side view taken along the line E in FIG.
【図７】同じく従来の他のコモンレールを例示したもの
で、（Ａ）はコモンレールの一部を示す正面図、（Ｂ）
は（Ａ）のローロ線上の縦断側面図である。7A and 7B also illustrate another conventional common rail, wherein FIG. 7A is a front view showing a part of the common rail, and FIG.
FIG. 3A is a vertical cross-sectional side view on the roll line of FIG.
１ 本管レール １−１ 流通路 ２ ボス ２−１貫孔 ２−１ａは螺子部 ３ 袴 DESCRIPTION OF SYMBOLS 1 Main rail 1-1 Flow passage 2 Boss 2-1 Through hole 2-1a is a screw part 3 Hakama
Claims (1)
に、前記流通路に連通する貫孔を有するボスを外周面に
軸芯とほぼ直角に突設したコモンレールにおいて、前記
貫孔を流通路の径方向に偏心させた構造となしたことを
特徴とするコモンレール。1. A common rail having a boss having a through hole communicating with the flow passage in a main rail having a flow passage inside the shaft core and projecting from the outer peripheral surface at a substantially right angle to the shaft core. A common rail characterized by a structure that is eccentric in the radial direction of the road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9013141A JPH10160079A (en) | 1996-10-03 | 1997-01-08 | Common rail |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28179096 | 1996-10-03 | ||
| JP8-281790 | 1996-10-03 | ||
| JP9013141A JPH10160079A (en) | 1996-10-03 | 1997-01-08 | Common rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10160079A true JPH10160079A (en) | 1998-06-16 |
Family
ID=26348875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9013141A Pending JPH10160079A (en) | 1996-10-03 | 1997-01-08 | Common rail |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10160079A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1529954A1 (en) * | 2003-11-07 | 2005-05-11 | Denso Corporation | Common rail having skew delivery ports |
| CN102269090A (en) * | 2010-06-03 | 2011-12-07 | 德尔福技术控股有限公司 | Stress relief in pressurized fluid flow system |
| CN103502625A (en) * | 2011-05-02 | 2014-01-08 | 罗伯特·博世有限公司 | Fuel distributor |
| EP3196457A4 (en) * | 2014-09-17 | 2018-05-02 | Hitachi Automotive Systems, Ltd. | Fuel rail |
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| JP2000501477A (en) * | 1996-09-30 | 2000-02-08 | 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 | High pressure fuel storage |
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| JPS5865970A (en) * | 1981-10-15 | 1983-04-19 | Yamaha Motor Co Ltd | Delivery pipe in fuel injector |
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| JP2000501477A (en) * | 1996-09-30 | 2000-02-08 | 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 | High pressure fuel storage |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1529954A1 (en) * | 2003-11-07 | 2005-05-11 | Denso Corporation | Common rail having skew delivery ports |
| US7066148B2 (en) | 2003-11-07 | 2006-06-27 | Denso Corporation | Common rail having skew delivery ports |
| CN102269090A (en) * | 2010-06-03 | 2011-12-07 | 德尔福技术控股有限公司 | Stress relief in pressurized fluid flow system |
| US8726942B2 (en) | 2010-06-03 | 2014-05-20 | Delphi International Operations Luxembourg, S.A.R.L. | Stress relief in pressurized fluid flow system |
| CN103502625A (en) * | 2011-05-02 | 2014-01-08 | 罗伯特·博世有限公司 | Fuel distributor |
| EP3196457A4 (en) * | 2014-09-17 | 2018-05-02 | Hitachi Automotive Systems, Ltd. | Fuel rail |
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