JP2000220552A - Fuel injection valve mounting device in fuel injection device - Google Patents
Fuel injection valve mounting device in fuel injection deviceInfo
- Publication number
- JP2000220552A JP2000220552A JP11025080A JP2508099A JP2000220552A JP 2000220552 A JP2000220552 A JP 2000220552A JP 11025080 A JP11025080 A JP 11025080A JP 2508099 A JP2508099 A JP 2508099A JP 2000220552 A JP2000220552 A JP 2000220552A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- fuel injection
- injection valve
- insertion hole
- holder
- 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.)
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Links
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- Fuel-Injection Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料ポンプによって昇
圧された燃料が燃料分配管へ供給され、燃料分配管内の
燃料が燃料噴射弁を介して吸気管の吸気路内に向けて噴
射供給される燃料噴射装置に関し、そのうち特に吸気管
と燃料分配管との間に燃料噴射弁を配置する燃料噴射弁
の取付け装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel pump in which fuel pressurized by a fuel pump is supplied to a fuel distribution pipe, and the fuel in the fuel distribution pipe is injected and supplied to an intake passage of an intake pipe via a fuel injection valve. In particular, the present invention relates to a fuel injection valve mounting device in which a fuel injection valve is disposed between an intake pipe and a fuel distribution pipe.
【０００２】[0002]
【従来の技術】従来の燃料噴射装置における燃料噴射弁
の取付け装置は特公平４−７８８７７号に示される。こ
れによると、燃料分配管には、その長手方向に沿って燃
料流路が穿設され、該燃料流路の一端には燃料流入ジョ
イントが接続され、その他端にはプレッシャーレギュレ
ターあるいはパルセーションダンパー等が接続される。
すなわち燃料流路の長手方向の開口は、前記部材によっ
て閉塞される。又、燃料分配管には、燃料流路に直交し
て燃料噴射弁後端挿入孔が穿設され、この燃料噴射弁後
端挿入孔内に燃料噴射弁の後端筒部が挿入されて支持さ
れる。而して、燃料流路に供給される燃料は燃料噴射弁
後端挿入孔から燃料噴射弁に向けて供給される。2. Description of the Related Art An apparatus for mounting a fuel injection valve in a conventional fuel injection device is disclosed in Japanese Patent Publication No. 4-78877. According to this, a fuel flow path is formed in the fuel distribution pipe along the longitudinal direction, a fuel inflow joint is connected to one end of the fuel flow path, and a pressure regulator or a pulsation damper is connected to the other end. Is connected.
That is, the opening in the longitudinal direction of the fuel flow path is closed by the member. In addition, a fuel injection valve rear end insertion hole is formed in the fuel distribution pipe at right angles to the fuel flow path, and a fuel injection valve rear end cylindrical portion is inserted and supported in the fuel injection valve rear end insertion hole. Is done. Thus, the fuel supplied to the fuel flow path is supplied from the fuel injection valve rear end insertion hole toward the fuel injection valve.
【０００３】[0003]
【発明が解決しようとする課題】かかる従来の燃料噴射
弁の取付け装置によると、燃料分配管のメンテナンス性
を向上できない。すなわち、燃料分配管の燃料分配路を
清掃する際、燃料分配路の両端を閉塞する燃料流入ジョ
イント及びプレッシャーレギュレターを取外し、燃料流
入路を直線状に開口してエアーブローしたとしても燃料
噴射弁の後端が挿入支持される燃料噴射弁後端挿入孔の
異物を良好に除去することが困難である。又、前記にお
いて高圧力を有するエアーが燃料噴射弁の後端の燃料開
口に作用するもので、このエアー中に燃料分配路内の異
物が混入されると、この異物が後端燃料開口内に進入す
る恐れがあり、好ましいものでない。更に、燃料分配管
を吸気管、機関より取外すことによって燃料噴射弁を燃
料噴射弁後端挿入孔より取外すことができる。これによ
ると、燃料噴射弁後端挿入孔を開放状態に保持すること
ができるので、燃料分配路及び燃料噴射弁後端挿入孔の
清掃を容易とすることができるものであるが、燃料分配
管の取外し作業及び取付け作業を必要とし、特に燃料分
配管の取付け作業時において、全ての燃料噴射弁の後端
筒部を燃料噴射弁後端挿入孔内に確実に挿入した後に、
燃料分配管を吸気管、機関へ取付ける必要があり、複数
の燃料噴射弁を有するものにおいてメンテナンス性が悪
い。According to such a conventional fuel injector mounting apparatus, the maintenance of the fuel distribution pipe cannot be improved. That is, when cleaning the fuel distribution path of the fuel distribution pipe, the fuel inflow joint and the pressure regulator that close both ends of the fuel distribution path are removed, and even if the fuel inflow path is opened linearly and the air is blown, the fuel injection valve is closed. It is difficult to satisfactorily remove foreign matter from the rear end insertion hole of the fuel injection valve whose rear end is inserted and supported. Further, in the above, air having a high pressure acts on the fuel opening at the rear end of the fuel injection valve, and when foreign matter in the fuel distribution path is mixed into the air, the foreign matter enters the fuel opening at the rear end. There is a risk of entry, which is not desirable. Further, the fuel injection valve can be removed from the fuel injection valve rear end insertion hole by removing the fuel distribution pipe from the intake pipe and the engine. According to this, the rear end insertion hole of the fuel injection valve can be held in an open state, so that the fuel distribution path and the rear end insertion hole of the fuel injection valve can be easily cleaned. In particular, at the time of the fuel distribution pipe mounting work, after securely inserting the rear end cylinders of all the fuel injection valves into the fuel injection valve rear end insertion holes,
It is necessary to attach the fuel distribution pipe to the intake pipe and the engine, and the maintenance performance is poor in those having a plurality of fuel injection valves.
【０００４】本発明になる燃料噴射装置における燃料噴
射弁の取付け装置は、前記不具合に鑑み成されたもの
で、燃料分配管の清掃を確実にして且つ容易に行なうこ
とのできる前記燃料噴射弁の取付け装置を提供すること
を主たる目的とする。[0004] A fuel injection valve mounting device in a fuel injection device according to the present invention has been made in view of the above-mentioned problems, and is capable of reliably and easily cleaning a fuel distribution pipe. The main purpose is to provide a mounting device.
【０００５】[0005]
【課題を解決する為の手段】本発明になる、燃料噴射装
置における燃料噴射弁の取付け装置は、前記目的達成の
為に、外側端から吸気路内に向かって穿設される燃料噴
射弁先端挿入孔を備えた吸気管と、長手方向に沿って燃
料流路が穿設されるとともに該燃料流路に交差して連設
され、ホルダー挿入端から吸気管対向端に向かって貫通
するホルダー挿入孔を備えた燃料分配管と、燃料分配管
のホルダー挿入孔に挿入される筒部と、筒部の中間部に
あって燃料流路に臨む縮小径部と、その内方にあって縮
小径部を介して燃料流路に連なる燃料導入路と、その上
流が燃料導入路に連絡され、下流が下端に向かって開口
する燃料噴射弁後端挿入孔とを備えるホルダー部材とよ
りなり、前記吸気管の燃料噴射弁先端挿入孔の長手軸心
線と、燃料分配管のホルダー挿入孔の長手軸心線と、ホ
ルダー部材の長手軸心線とを同一直線上に配置し、燃料
噴射弁の先端筒部を吸気管の燃料噴射弁先端挿入孔にて
支持するとともにその長手軸心線を直線に沿って配置
し、更に燃料噴射弁の後端筒部を燃料分配管のホルダー
挿入孔内に臨んで配置し、ホルダー部材を燃料分配管の
ホルダー挿入端よりホルダー挿入孔内に向けて着脱自在
に固定配置することにより、ホルダー部材の燃料噴射弁
後端挿入孔にて燃料噴射弁の後端筒部を支持するととも
に燃料噴射弁をホルダー部材と吸気管とによって挟持
し、更に燃料分配管の燃料流路をホルダー部材の縮小径
部を介して燃料導入路に連絡したことを第１の特徴とす
る。According to the present invention, there is provided a fuel injection valve mounting device in a fuel injection device, wherein the fuel injection valve is provided at a tip end of the fuel injection valve which is bored from an outer end into an intake passage to achieve the above object. An intake pipe having an insertion hole, a fuel flow passage formed in a longitudinal direction, a fuel flow passage extending along the fuel flow passage, and a holder insertion penetrating from the holder insertion end toward the intake pipe facing end. A fuel distribution pipe having a hole, a tubular part inserted into a holder insertion hole of the fuel distribution pipe, a reduced diameter part in the middle of the cylinder part facing the fuel flow path, and a reduced diameter part inside thereof. A fuel introduction passage connected to the fuel flow path through the portion, and a holder member including a fuel injection valve rear end insertion hole that is connected to the fuel introduction passage at the upstream and opens to the lower end at the downstream. The longitudinal axis of the fuel injection valve tip insertion hole in the pipe and the fuel distribution pipe The longitudinal axis of the holder insertion hole and the longitudinal axis of the holder member are arranged on the same straight line, and the tip cylinder of the fuel injection valve is supported by the fuel injection valve tip insertion hole of the intake pipe, and its longitudinal The axial line is arranged along a straight line, the rear end cylinder of the fuel injection valve is arranged facing the holder insertion hole of the fuel distribution pipe, and the holder member is inserted into the holder insertion hole from the holder insertion end of the fuel distribution pipe. By detachably fixing the fuel injection valve toward the rear end, the rear end cylindrical portion of the fuel injection valve is supported by the fuel injection valve rear end insertion hole of the holder member, and the fuel injection valve is sandwiched between the holder member and the intake pipe, A first feature is that the fuel flow path of the fuel distribution pipe is connected to the fuel introduction path via the reduced diameter portion of the holder member.
【０００６】又、本発明は、前記第１の特徴に加え、前
記ホルダー部材の縮小径部に燃料流路から燃料導入路に
向かって流入する燃料中の異物を除去するフィルターを
配置したことを第２の特徴とする。According to the present invention, in addition to the first feature, a filter is provided at a reduced diameter portion of the holder member for removing foreign matter in fuel flowing from a fuel flow path toward a fuel introduction path. This is the second feature.
【０００７】更に本発明は、前記第１及び第２の特徴に
加え、前記燃料流路より上方位置にあるホルダー部材の
外周と、ホルダー挿入孔との間に第１弾性リングが配置
されるとともに燃料流路より下方位置にあるホルダー部
材の外周と、ホルダー挿入孔との間に第２弾性リングが
配置され、ホルダー部材の燃料噴射弁後端挿入孔と燃料
噴射弁の後端筒部との間に第３弾性リングを配置したこ
とを第３の特徴とする。Further, according to the present invention, in addition to the first and second features, a first elastic ring is disposed between an outer periphery of a holder member located above the fuel flow path and a holder insertion hole. A second elastic ring is disposed between the outer periphery of the holder member located below the fuel flow path and the holder insertion hole, and the second elastic ring is provided between the fuel injection valve rear end insertion hole of the holder member and the fuel injection valve rear end cylinder. A third feature is that a third elastic ring is disposed therebetween.
【０００８】[0008]
【作用】本発明の第１の特徴によると、ホルダー部材を
燃料分配管のホルダー挿入孔より取外すことによって、
燃料分配路をホルダー挿入孔を介してホルダー挿入端及
び吸気管対向端に開口することができ、これによって燃
料分配路を良好に清掃できる。又、ホルダー部材も取外
された状態で清掃できる。According to the first feature of the present invention, by removing the holder member from the holder insertion hole of the fuel distribution pipe,
The fuel distribution passage can be opened to the holder insertion end and the end facing the intake pipe through the holder insertion hole, whereby the fuel distribution passage can be cleaned well. Also, the holder member can be cleaned with the holder member removed.
【０００９】又、本発明の第２の特徴によると、ホルダ
ー部材の縮小径部にフィルターが配置されるので、フィ
ルターの配置の自由度を高めることができるとともにフ
ィルターの清掃を確実に行なうことができる。Further, according to the second feature of the present invention, since the filter is arranged at the reduced diameter portion of the holder member, the degree of freedom of arrangement of the filter can be increased and the filter can be reliably cleaned. it can.
【００１０】更に、本発明の第３の特徴によると、第１
弾性リングと第２弾性リングとによって燃料流路内の昇
圧された燃料が燃料分配管の外部へ洩れることがなく、
又第３弾性リングによって燃料導入路内を流れる燃料が
燃料分配管の外部へ洩れることがない。Further, according to a third feature of the present invention, the first
The pressurized fuel in the fuel flow path is not leaked to the outside of the fuel distribution pipe by the elastic ring and the second elastic ring,
Further, the fuel flowing through the fuel introduction path is not leaked outside the fuel distribution pipe by the third elastic ring.
【００１１】[0011]
【実施例】以下、本発明になる燃料噴射装置における燃
料噴射弁の取付け装置の一実施例について説明する。Ａ
は吸気管であり、図１における左方の下流は図示せぬ機
関へ連絡される。吸気管Ａの外側端１には左下方に向か
って燃料噴射弁先端挿入孔２が吸気管Ａの吸気路３内に
向かって穿設されるもので、この燃料噴射弁先端挿入孔
２の外側端１への開口は大径をなすパッキン挿入孔２２
をもって開口する。Ｊは燃料噴射弁であり、その下方に
先端筒部４が形成されるとともにその上方に後端６を有
する後端筒部５が形成され、更に後端筒部５の下方に上
方係止鍔部７が形成され、先端筒部４の上方に下方係止
鍔部８が形成される。前記、第１の燃料噴射弁Ｊは公知
のものである。Ｒは、内部を長手軸心方向に沿って燃料
流路９が穿設された燃料分配管であり、該燃料流路には
図示せぬ燃料ポンプより昇圧された燃料が供給される。
そして、燃料分配管Ｒの右斜め上方にあるホルダー挿入
端１０から左斜め下方にある吸気管対向端１１に向けて
ホルダー挿入孔１２が貫通して穿設されるもので、この
ホルダー挿入孔１２は燃料流路９を横断する。尚、１６
はホルダー挿入孔１２のホルダー挿入端１０への開口に
設けた第１の係止段部であり、５０はホルダー挿入端１
０に穿設されたメネジ孔である。Ｈはホルダー部材であ
り、その外径部には燃料分配管Ｒのホルダー挿入孔１２
内に挿通される筒部１３と、中間の縮小径部１４と、上
方鍔部１５とが形成され、その内部には縮小径部１４に
開口するとともにその長手軸心線Ｈ−Ｈに沿う燃料導入
路１７と、上方が燃料導入路１７に連なり下方が下端１
８に開口する燃料噴射弁後端挿入孔１９が連設される。
２０は縮小径部１４より下方の筒部１３に嵌合配置され
た弾性材料よりなる第２弾性リング２１は縮小径部１４
より上方の筒部１３に嵌合配置された弾性材料よりなる
第１弾性リングである。以上によって燃料噴射装置の各
構成の説明が成された。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a fuel injection valve mounting device in a fuel injection device according to the present invention will be described below. A
Is an intake pipe, and a downstream portion on the left side in FIG. 1 is connected to an engine (not shown). At the outer end 1 of the intake pipe A, a fuel injection valve tip insertion hole 2 is bored downward and toward the inside of the intake passage 3 of the intake pipe A. The opening to the end 1 is a packing insertion hole 22 having a large diameter.
Open with A fuel injection valve J has a front end tubular portion 4 formed below and a rear end tubular portion 5 having a rear end 6 formed above the fuel injection valve. A portion 7 is formed, and a lower locking flange 8 is formed above the distal end cylindrical portion 4. The first fuel injection valve J is a known fuel injection valve. R is a fuel distribution pipe in which a fuel flow path 9 is bored along the longitudinal axis direction, and fuel pressurized by a fuel pump not shown is supplied to the fuel flow path.
A holder insertion hole 12 penetrates from the holder insertion end 10 at the upper right of the fuel distribution pipe R to the intake pipe opposing end 11 at the lower left. Crosses the fuel flow path 9. In addition, 16
Reference numeral 50 denotes a first locking step provided at an opening of the holder insertion hole 12 to the holder insertion end 10, and 50 denotes a holder insertion end 1.
0 is a female screw hole. H is a holder member, the outer diameter of which is a holder insertion hole 12 for the fuel distribution pipe R.
A cylindrical portion 13, an intermediate reduced-diameter portion 14, and an upper flange portion 15 are formed therein. The introduction path 17 is connected to the fuel introduction path 17 at the upper side and at the lower end 1 at the lower side.
A fuel injection valve rear end insertion hole 19 that opens to 8 is continuously provided.
Reference numeral 20 denotes a second elastic ring 21 made of an elastic material fitted to the cylindrical portion 13 below the reduced diameter portion 14.
The first elastic ring is made of an elastic material and fitted to the upper cylindrical portion 13. The configuration of the fuel injection device has been described above.
【００１２】そして、燃料噴射弁Ｊの取りつけは、以下
によって行なわれる。吸気管Ａの燃料噴射弁先端挿入孔
２の長手軸心線Ａ−Ａ、燃料分配管Ｒのホルダー挿入孔
１２の長手軸心線Ｒ−Ｒ、ホルダー部材Ｈの長手軸心線
Ｈ−Ｈは同一直線Ｘ−Ｘ上に配置される。The mounting of the fuel injection valve J is performed as follows. The longitudinal axis AA of the fuel injection valve tip insertion hole 2 of the intake pipe A, the longitudinal axis RR of the holder insertion hole 12 of the fuel distribution pipe R, and the longitudinal axis HH of the holder member H are They are arranged on the same straight line XX.
【００１３】そして、燃料噴射弁Ｊの先端筒部４は、燃
料噴射弁先端挿入孔２内に挿入され、このとき先端筒部
４を含む下方係止鍔部８はパッキン挿入孔２２内に配置
されたゴム材料よりなるパッキン３０に係止される。一
方、後端筒部５を含む上方係止鍔部７にはゴム材料より
なるクッションリング３１が係止される。以上の如く、
燃料噴射弁Ｊはその先端筒部４が吸気管Ａの燃料噴射弁
先端挿入孔２内に挿入されて支持されるもので、このと
き燃料噴射弁Ｊの長手軸心線Ｊ−Ｊは直線Ｘ−Ｘ上に略
配置される。又、かかる状態において燃料分配管Ｒは、
吸気管Ａあるいは他の機関部品にステー等の取付け手段
Ｆをもって図の位置に固定配置されているもので、その
とき、燃料噴射弁Ｊの後端６を含む後端筒部５の一部は
燃料分配管Ｒのホルダー挿入孔１２内に臨んで配置され
る。前記状態が図１に示される。[0013] The distal end cylindrical portion 4 of the fuel injection valve J is inserted into the fuel injection valve distal end insertion hole 2. At this time, the lower locking flange 8 including the distal end cylindrical portion 4 is disposed in the packing insertion hole 22. Is locked by a packing 30 made of a rubber material. On the other hand, a cushion ring 31 made of a rubber material is locked on the upper locking flange 7 including the rear end tubular portion 5. As mentioned above,
The fuel injection valve J is such that its front end cylindrical portion 4 is inserted into and supported by the fuel injection valve front end insertion hole 2 of the intake pipe A. At this time, the longitudinal axis JJ of the fuel injection valve J is a straight line X It is substantially arranged on -X. In such a state, the fuel distribution pipe R
Attachment means F such as a stay is fixed to the intake pipe A or another engine part at a position shown in the figure, and at this time, a part of the rear end cylinder portion 5 including the rear end 6 of the fuel injection valve J is It is arranged facing the inside of the holder insertion hole 12 of the fuel distribution pipe R. The above state is shown in FIG.
【００１４】そして、図１の状態にある燃料噴射装置は
以下によって最終的に吸気管Ａに組みつけられる。図２
によって説明すると、位置決め固定された状態にある燃
料分配管Ｒのホルダー挿入孔１２内にホルダー部材Ｈを
挿入し、上方鍔部１５の上方をホルダー挿入端１０上に
螺着配置される押圧板３３にて押圧して固定する。以上
によると、ホルダー部材Ｈの上方鍔部１５は係止段部１
６上に配置され、縮小径部１４はホルダー挿入孔１２内
にあって且つ燃料流路９に臨んで配置され、又筒部１３
はホルダー挿入孔１２内を挿通し、その下端１８は燃料
分配管Ｒの吸入管対向端１１より下方に向けて突出す
る。そして、このとき、ホルダー部材Ｈの下端１８は燃
料噴射弁Ｊのクッションリング３１に当接し、クッショ
ンリング３１を押圧する。一方、ホルダー部材Ｈの燃料
噴射弁後端挿入孔１９内には燃料噴射弁Ｊの後端６を含
む後端筒部５が挿入配置される。The fuel injection device in the state shown in FIG. 1 is finally assembled to the intake pipe A as follows. FIG.
More specifically, the holder member H is inserted into the holder insertion hole 12 of the fuel distribution pipe R which is positioned and fixed, and the pressing plate 33 screwed above the upper flange 15 onto the holder insertion end 10. Press to fix. According to the above description, the upper flange 15 of the holder member H is fixed to the locking step 1.
6, the reduced diameter portion 14 is located in the holder insertion hole 12 and facing the fuel flow path 9, and
Is inserted through the holder insertion hole 12, and the lower end 18 protrudes downward from the suction pipe facing end 11 of the fuel distribution pipe R. Then, at this time, the lower end 18 of the holder member H contacts the cushion ring 31 of the fuel injection valve J and presses the cushion ring 31. On the other hand, the rear end cylindrical portion 5 including the rear end 6 of the fuel injection valve J is inserted into the fuel injection valve rear end insertion hole 19 of the holder member H.
【００１５】以上によると、燃料噴射弁Ｊは、その先端
筒部４がパッキン３０を介して燃料噴射弁先端挿入孔２
内に収納支持され、その後端筒部５がホルダー部材Ｈの
燃料噴射弁後端挿入孔１９に収納支持されるので、燃料
噴射弁Ｊを直線Ｘ−Ｘに沿って吸気管Ａの吸気路３内に
向けて配置できる。又、燃料噴射弁Ｊはパッキン３０及
びクッションリング３１を介して弾性的に吸気管Ａと燃
料分配管Ｒとの間に挟持されるもので燃料分配管Ｒと吸
気管Ａとの相対位置が多少ズレても確実に取りつけるこ
とができる。According to the above description, the fuel injection valve J has the front end cylindrical portion 4 through the packing 30 and the fuel injection valve front end insertion hole 2.
The rear end cylindrical portion 5 is stored and supported in the rear end insertion hole 19 of the fuel injection valve of the holder member H, so that the fuel injection valve J is moved along the straight line XX along the intake passage 3 of the intake pipe A. Can be placed inside. Further, the fuel injection valve J is elastically sandwiched between the intake pipe A and the fuel distribution pipe R via the packing 30 and the cushion ring 31, and the relative position between the fuel distribution pipe R and the intake pipe A is slightly different. Even if it is misaligned, it can be securely attached.
【００１６】そして、燃料分配管Ｒの燃料流路９内に昇
圧された燃料が供給されると、ホルダー部材Ｈの縮小径
部１４、燃料導入路１７を介して燃料噴射弁Ｊに燃料が
供給され、次いで、燃料噴射弁Ｊより制御された燃料が
吸気管Ａの吸気路３内へ噴射供給される。そして、かか
る際において、第１弾性リング２１及び第２弾性リング
２０は燃料分配管Ｒのホルダー挿入孔１２からの燃料洩
れを抑止し、燃料噴射弁Ｊの後端筒部５に嵌合配置した
弾性材料よりなる第３弾性リング３４は、ホルダー部材
Ｈの燃料導入路１７からの燃料洩れを抑止する。When the pressurized fuel is supplied into the fuel passage 9 of the fuel distribution pipe R, the fuel is supplied to the fuel injection valve J via the reduced diameter portion 14 of the holder member H and the fuel introduction passage 17. Then, the fuel controlled by the fuel injection valve J is injected and supplied into the intake passage 3 of the intake pipe A. In such a case, the first elastic ring 21 and the second elastic ring 20 suppress fuel leakage from the holder insertion hole 12 of the fuel distribution pipe R, and are fitted to the rear end tubular portion 5 of the fuel injection valve J. The third elastic ring 34 made of an elastic material suppresses fuel leakage from the fuel introduction path 17 of the holder member H.
【００１７】かかる燃料噴射弁の取付け装置によると、
燃料分配管のメンテナンスは以下によって行なわれる。
すなわち、燃料分配管Ｒのホルダー挿入端１０上に螺着
される押圧板３３を取外し、次いでホルダー部材Ｈを直
線Ｘ−Ｘに沿って上方へ抜き出す。以上によると、燃料
分配管Ｒに穿設せるホルダー挿入孔１２は、その上端が
ホルダー挿入端１０に開口し、下端が吸気管対向端１１
に開口する。従ってホルダー挿入孔１２に向けてエアー
ブローすれば、燃料分配路９及びホルダー挿入孔１２に
ある異物は、ホルダー挿入端１０及び吸気管対向端１１
に開口するホルダー挿入孔１２より外部に排出される。
そして、このとき、特にホルダー挿入孔１２が直線状に
開口するから異物の排出性を高めることができる。According to the fuel injector mounting device,
The maintenance of the fuel distribution pipe is performed as follows.
That is, the pressing plate 33 screwed onto the holder insertion end 10 of the fuel distribution pipe R is removed, and then the holder member H is pulled out along the straight line XX. According to the above description, the holder insertion hole 12 drilled in the fuel distribution pipe R has an upper end opened to the holder insertion end 10 and a lower end formed at the intake pipe facing end 11.
Open to Therefore, if air is blown toward the holder insertion hole 12, foreign matter in the fuel distribution passage 9 and the holder insertion hole 12 is removed by the holder insertion end 10 and the intake pipe facing end 11.
It is discharged to the outside through the holder insertion hole 12 opening at the bottom.
At this time, since the holder insertion hole 12 is opened in a straight line, the discharging property of the foreign matter can be enhanced.
【００１８】又、燃料噴射弁Ｊの後端筒部５が燃料分配
管Ｒのホルダー挿入孔１２内に臨んで配置されるが、燃
料噴射弁Ｊの後端筒部５はホルダー部材Ｈの燃料噴射弁
後端挿入孔１９内に挿入配置したので、燃料噴射弁Ｊの
後端筒部５と燃料分配管Ｒのホルダー挿入孔１２との間
には環状間隙Ｓが形成される。而して、燃料流路９を含
むホルダー挿入孔１２を清掃する際、燃料噴射弁Ｊの後
端６に向かってエアーが作用しても、このエアーは環状
間隙Ｓを通って外部へ排出されるので、異物が燃料噴射
弁Ｊの後端６に開口する燃料通路に直接的に衝突する割
合が減少される。The rear end cylinder 5 of the fuel injection valve J is disposed facing the inside of the holder insertion hole 12 of the fuel distribution pipe R. The rear end cylinder 5 of the fuel injection valve J is Since the fuel injection valve J is inserted into the rear end insertion hole 19, an annular gap S is formed between the rear end cylinder portion 5 of the fuel injection valve J and the holder insertion hole 12 of the fuel distribution pipe R. Thus, even when air acts toward the rear end 6 of the fuel injection valve J when cleaning the holder insertion hole 12 including the fuel flow path 9, the air is discharged to the outside through the annular gap S. Therefore, the ratio of foreign matter directly colliding with the fuel passage opening to the rear end 6 of the fuel injection valve J is reduced.
【００１９】又、ホルダー部材Ｈにあっては、燃料分配
管Ｒより引き抜かれることより、その周囲が確実に大気
に開放される。従って、その清掃は何等阻害されること
なく確実且つ容易に行なわれる。The holder member H is pulled out from the fuel distribution pipe R, so that the periphery thereof is reliably opened to the atmosphere. Therefore, the cleaning is performed reliably and easily without any hindrance.
【００２０】次いで、燃料分配管Ｒのメンテナンス作業
後の組付けについて鑑案すると、燃料分配管Ｒのホルダ
ー挿入端１０よりホルダー挿入孔９内に向けてホルダー
部材Ｈを挿入するが、このとき、燃料噴射弁Ｊの後端筒
部５が予めホルダー挿入孔１２内に進入して配置される
ので、燃料噴射弁Ｊの後端筒部５が大きく傾斜すること
がない。従って、ホルダー部材Ｈの燃料噴射弁後端挿入
孔１９を燃料噴射弁Ｊの後端筒部５に容易に挿入でき、
メンテナンス作業を良好に行なうことができる。Next, considering the assembly of the fuel distribution pipe R after the maintenance work, the holder member H is inserted into the holder insertion hole 9 from the holder insertion end 10 of the fuel distribution pipe R. Since the rear end cylindrical portion 5 of the fuel injection valve J is arranged to enter the holder insertion hole 12 in advance, the rear end cylindrical portion 5 of the fuel injection valve J is not greatly inclined. Accordingly, the fuel injection valve rear end insertion hole 19 of the holder member H can be easily inserted into the fuel injection valve J rear end cylindrical portion 5, and
Maintenance work can be performed favorably.
【００２１】そして、ホルダー部材Ｈの縮小径部１４に
円筒状のフィルター４０を配置すれば、燃料流路９から
ホルダー部材Ｈの燃料導入路１７に向かって流入する異
物を確実に除去することができる。又、フィルター部材
４０を前記縮小径部１４に配置したことによると、フィ
ルター４０の配置の自由度が高く、フィルター４０の最
適設計を容易に行なうことができる。従来のように、燃
料噴射弁Ｊの後端筒部５にフィルター４０を装着するも
のにあってはフィルターは狭い部分に配置されてフィル
ター４０の設計的自由度は低い。又、メンテナンス作業
時において、フィルター４０はもっとも異物が付着し易
く、その清掃は注意深くされる必要があるが、本発明の
如く、縮小径部１４にフィルター４０を配置したものに
あっては、フィルター４０の周囲が大気に完全に開口す
るので、清掃が極めて容易で且つ確実に行なうことがで
きる。If the cylindrical filter 40 is disposed on the reduced diameter portion 14 of the holder member H, foreign matter flowing from the fuel flow path 9 toward the fuel introduction path 17 of the holder member H can be reliably removed. it can. Further, by disposing the filter member 40 on the reduced diameter portion 14, the degree of freedom of arrangement of the filter 40 is high, and the optimum design of the filter 40 can be easily performed. As in the prior art, in the case where the filter 40 is mounted on the rear end cylinder portion 5 of the fuel injection valve J, the filter is arranged in a narrow portion, and the degree of freedom in designing the filter 40 is low. Also, during the maintenance work, the filter 40 is most susceptible to foreign matters and needs to be carefully cleaned. However, in the case where the filter 40 is disposed in the reduced diameter portion 14 as in the present invention, the filter Since the periphery of 40 is completely open to the atmosphere, cleaning can be performed very easily and reliably.
【００２２】更に、ホルダー挿入孔１２と上方の筒部１
３とのシールは第１弾性リング２１によって保持される
ので、ホルダー挿入端１０より燃料流路９を流れる燃料
が洩れることがない。又ホルダー挿入孔１２と下方の筒
部１３とのシールは第２弾性リング２０によって保持さ
れるので、吸気管対向端１１より燃料流路９を流れる燃
料が洩れることはない。更に又、燃料噴射弁Ｊの後端筒
部５とホルダー部材Ｈの燃料噴射弁後端挿入孔１９との
シールは第３弾性リング３４によって保持されるので、
ホルダー部材Ｈの下端１８から燃料導入路１７を流れる
燃料が洩れることはない。Further, the holder insertion hole 12 and the upper cylindrical portion 1 are formed.
3 is held by the first elastic ring 21, so that the fuel flowing through the fuel flow path 9 from the holder insertion end 10 does not leak. Since the seal between the holder insertion hole 12 and the lower cylindrical portion 13 is held by the second elastic ring 20, the fuel flowing through the fuel flow path 9 from the intake pipe facing end 11 does not leak. Furthermore, since the seal between the rear end cylindrical portion 5 of the fuel injection valve J and the fuel injection valve rear end insertion hole 19 of the holder member H is held by the third elastic ring 34,
The fuel flowing through the fuel introduction path 17 from the lower end 18 of the holder member H does not leak.
【００２３】[0023]
【発明の効果】以上の如く、本発明の第１の特徴による
と、燃料分配管を取外すことなくホルダー部材のみを取
出すことによって燃料分配管を確実にして且つ容易にメ
ンテナンス作業を行なうことができる。又、ホルダー部
材にあっては、その取出しによって全てを大気に開口で
きたので確実な清掃を行なうことができる。又、メンテ
ナンス作業後において、ホルダー部材をホルダー挿入孔
内に挿入配置する際、燃料噴射弁の後端筒部を燃料分配
管のホルダー挿入孔内に進入して配置したので、燃料噴
射弁の傾斜が一定範囲に抑止され、これによってホルダ
ー部材の組付け性を良好に保持できる。As described above, according to the first aspect of the present invention, by taking out only the holder member without removing the fuel distribution pipe, the fuel distribution pipe can be reliably and easily maintained. . In addition, all the holder members can be opened to the atmosphere by taking out the holder members, so that reliable cleaning can be performed. Also, when the holder member is inserted into the holder insertion hole after the maintenance work, the rear end cylindrical portion of the fuel injection valve is inserted into the holder insertion hole of the fuel distribution pipe, so that the inclination of the fuel injection valve is reduced. Is restrained within a certain range, whereby the assemblability of the holder member can be kept good.
【００２４】又、フィルターをホルダー部材の縮小径部
に配置したことによると、フィルターの設計的自由度を
高めることができるとともにフィルターのメンテナンス
性を向上できたものである。Further, by disposing the filter on the reduced diameter portion of the holder member, the degree of freedom in designing the filter can be increased and the maintainability of the filter can be improved.
【００２５】又、燃料流路より上方位置にあるホルダー
部材の外周と、ホルダー挿入孔との間に第１弾性リング
が配置されるとともに燃料流路より下方位置にあるホル
ダー部材の外周と、ホルダー挿入孔との間に第２弾性リ
ングが配置され、ホルダー部材の燃料噴射弁後端挿入孔
と燃料噴射弁の後端筒部との間に第３弾性リングを配置
したことによると、ホルダー部材と燃料分配管との間の
シール及び燃料噴射弁とホルダー部材とのシールを確実
に行なうことができ、それらの部位からの燃料洩れを完
全に抑止できる。Further, a first elastic ring is disposed between the outer periphery of the holder member located above the fuel passage and the holder insertion hole, and the outer periphery of the holder member located below the fuel passage and the holder. The second elastic ring is disposed between the insertion hole and the third elastic ring between the rear end insertion hole of the fuel injection valve of the holder member and the rear end cylindrical portion of the fuel injection valve. Sealing between the fuel injection pipe and the fuel distribution pipe and between the fuel injection valve and the holder member can be reliably performed, and fuel leakage from these portions can be completely suppressed.
【図１】燃料噴射装置を構成する各部品が直線Ｘ−Ｘ上
に配置された状態を示す配置図。FIG. 1 is an arrangement diagram showing a state in which components constituting a fuel injection device are arranged on a straight line XX.
【図２】燃料噴射装置が組みつけられた状態を示す要部
縦断面図。FIG. 2 is a longitudinal sectional view of a main part showing a state where the fuel injection device is assembled.
２ 燃料噴射弁先端挿入孔 Ａ 吸気管 ９ 燃料流路 １０ ホルダー挿入端 １１ 吸気管対向端 １２ ホルダー挿入孔 １７ 燃料導入路 １９ 燃料噴射弁後端挿入孔 Ｒ 燃料分配管 Ｈ ホルダー部材 ４０ フィルター Ｊ 燃料噴射弁 2 Fuel injection valve tip insertion hole A Intake pipe 9 Fuel flow path 10 Holder insertion end 11 Intake pipe facing end 12 Holder insertion hole 17 Fuel introduction path 19 Fuel injection valve rear end insertion hole R Fuel distribution pipe H Holder member 40 Filter J Fuel Injection valve
Claims (3)
される燃料噴射弁先端挿入孔２を備えた吸気管Ａと、長
手方向に沿って燃料流路９が穿設されるとともに該燃料
流路９に交差して連設され、ホルダー挿入端１０から吸
気管対向端１１に向かって貫通するホルダー挿入孔１２
を備えた燃料分配管Ｒと、燃料分配管Ｒのホルダー挿入
孔１２内に挿入される筒部１３と、筒部１３の中間部に
あって燃料流路９に臨む縮小径部１４と、その内方にあ
って縮小径部１４を介して燃料流路９に連なる燃料導入
路１７と、その上流が燃料導入路１７に連絡され、下流
が下端１８に向かって開口する燃料噴射弁後端挿入孔１
９とを備えるホルダー部材Ｈとよりなり、前記吸気管Ａ
の燃料噴射弁先端挿入孔２の長手軸心線Ａ−Ａと、燃料
分配管Ｒのホルダー挿入孔１２の長手軸心線Ｒ−Ｒと、
ホルダー部材Ｈの長手軸心線Ｈ−Ｈとを同一直線Ｘ−Ｘ
上に配置し、燃料噴射弁Ｊの先端筒部４を吸気管Ａの燃
料噴射弁先端挿入孔２にて支持するとともにその長手軸
心線Ｊ−Ｊを直線Ｘ−Ｘに沿って配置し、更に燃料噴射
弁Ｊの後端筒部５を燃料分配管Ｒのホルダー挿入孔１２
内に臨んで配置し、ホルダー部材Ｈを燃料分配管Ｒのホ
ルダー挿入端１０よりホルダー挿入孔１２内に向けて着
脱自在に固定配置することにより、ホルダー部材Ｈの燃
料噴射弁後端挿入孔１９にて燃料噴射弁Ｊの後端筒部５
を支持するとともに燃料噴射弁Ｊをホルダー部材Ｈと吸
気管Ａとによって挟持し、更に燃料分配管Ｒの燃料流路
９をホルダー部材Ｈの縮小径部１４を介して燃料導入路
１７に連絡したことを特徴とする燃料噴射装置における
燃料噴射弁の取付け装置。1. An intake pipe A having a fuel injection valve tip insertion hole 2 drilled from an outer end 1 into an intake passage 3. A fuel passage 9 is drilled along a longitudinal direction. A holder insertion hole 12 which is provided continuously across the fuel flow path 9 and penetrates from the holder insertion end 10 toward the intake pipe facing end 11.
A fuel distribution pipe R provided with: a cylindrical portion 13 inserted into the holder insertion hole 12 of the fuel distribution pipe R; a reduced diameter portion 14 located at an intermediate portion of the cylindrical portion 13 and facing the fuel flow path 9; A fuel introduction passage 17 which is inward and communicates with the fuel flow passage 9 through the reduced diameter portion 14, and an upstream end thereof is connected to the fuel introduction passage 17, and a downstream end of the fuel injection valve is opened toward the lower end 18. Hole 1
9 and the suction pipe A
A longitudinal axis A-A of the fuel injection valve tip insertion hole 2 and a longitudinal axis R-R of the holder insertion hole 12 of the fuel distribution pipe R;
Align the longitudinal axis HH of the holder member H with a straight line XX
The fuel injection valve J is disposed at the upper end thereof, the distal end cylindrical portion 4 of the fuel injection valve J is supported by the fuel injection valve distal end insertion hole 2 of the intake pipe A, and its longitudinal axis JJ is disposed along a straight line XX, Further, the rear end cylindrical portion 5 of the fuel injection valve J is inserted into the holder insertion hole 12 of the fuel distribution pipe R.
And the holder member H is removably fixedly arranged from the holder insertion end 10 of the fuel distribution pipe R toward the holder insertion hole 12, whereby the rear end insertion hole 19 of the fuel injection valve of the holder member H is provided. At the rear end cylinder 5 of the fuel injection valve J
And the fuel injection valve J was sandwiched between the holder member H and the intake pipe A, and the fuel flow path 9 of the fuel distribution pipe R was connected to the fuel introduction path 17 via the reduced diameter portion 14 of the holder member H. An installation device for a fuel injection valve in a fuel injection device.
流路９から燃料導入路１７に向かって流入する燃料中の
異物を除去するフィルター４０を配置してなる請求項１
記載の燃料噴射装置における燃料噴射弁の取付け装置。2. A filter 40 for removing foreign matter in fuel flowing from the fuel flow passage 9 toward the fuel introduction passage 17 is provided in the reduced diameter portion 14 of the holder member.
A mounting device for a fuel injection valve in the fuel injection device as described in the above.
ダー部材Ｈの外周と、ホルダー挿入孔１２との間に第１
弾性リング２１が配置されるとともに燃料流路９より下
方位置にあるホルダー部材Ｈの外周と、ホルダー挿入孔
１２との間に第２弾性リング２０が配置され、ホルダー
部材Ｈの燃料噴射弁後端挿入孔１９と燃料噴射弁Ｊの後
端筒部５との間に第３弾性リング３４を配置してなる請
求項１及び２記載の燃料噴射装置における燃料噴射弁の
取付け装置。3. A first space between the outer periphery of the holder member H above the fuel flow path 9 and the holder insertion hole 12.
The second elastic ring 20 is disposed between the holder insertion hole 12 and the outer periphery of the holder member H at a position below the fuel flow path 9 where the elastic ring 21 is disposed, and the rear end of the fuel injection valve of the holder member H. 3. The fuel injection valve mounting device according to claim 1, wherein a third elastic ring is disposed between the insertion hole and the rear end cylindrical portion of the fuel injection valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11025080A JP2000220552A (en) | 1999-02-02 | 1999-02-02 | Fuel injection valve mounting device in fuel injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11025080A JP2000220552A (en) | 1999-02-02 | 1999-02-02 | Fuel injection valve mounting device in fuel injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000220552A true JP2000220552A (en) | 2000-08-08 |
Family
ID=12155956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11025080A Pending JP2000220552A (en) | 1999-02-02 | 1999-02-02 | Fuel injection valve mounting device in fuel injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000220552A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915239A (en) * | 2017-12-13 | 2019-06-21 | 大陆汽车***公司 | The reduction agent dose to improve equipment is reduced and purged with changes in flow rate feeds unit |
-
1999
- 1999-02-02 JP JP11025080A patent/JP2000220552A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915239A (en) * | 2017-12-13 | 2019-06-21 | 大陆汽车***公司 | The reduction agent dose to improve equipment is reduced and purged with changes in flow rate feeds unit |
| JP2019108892A (en) * | 2017-12-13 | 2019-07-04 | コンチネンタル オートモーティブ システムズ インコーポレイテッドＣｏｎｔｉｎｅｎｔａｌ Ａｕｔｏｍｏｔｉｖｅ Ｓｙｓｔｅｍｓ， Ｉｎｃ． | Reductant dosing unit with flow variability reduction and purge improvement device |
| US11162403B2 (en) | 2017-12-13 | 2021-11-02 | Vitesco Techologies USA, LLC | Reductant dosing unit with flow variability reduction and purge improvement device |
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