JPS6329873Y2 - - Google Patents
Info
- Publication number
- JPS6329873Y2 JPS6329873Y2 JP26183U JP26183U JPS6329873Y2 JP S6329873 Y2 JPS6329873 Y2 JP S6329873Y2 JP 26183 U JP26183 U JP 26183U JP 26183 U JP26183 U JP 26183U JP S6329873 Y2 JPS6329873 Y2 JP S6329873Y2
- Authority
- JP
- Japan
- Prior art keywords
- needle valve
- nozzle holder
- valve
- nozzle
- internal combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000446 fuel Substances 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 238000002485 combustion reaction Methods 0.000 claims description 21
- 239000000295 fuel oil Substances 0.000 claims description 12
- 239000004020 conductor Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
【考案の詳細な説明】
本考案は内燃機関用燃料噴射弁であつて、弁座
と針弁との接触、非接触により電気的スイツチを
形成し、該電気的スイツチにより開閉を検出する
内燃機関用燃料噴射弁に関する。[Detailed description of the invention] The present invention is a fuel injection valve for internal combustion engines, which forms an electrical switch through contact or non-contact between the valve seat and the needle valve, and detects opening/closing by the electrical switch. related to fuel injection valves.
（従来技術）
内燃機関用燃料噴射弁の主要部が導電性体によ
り構成されていることを利用して、針弁とノズル
本体の針弁ガイド部分とを電気的に絶縁して、弁
座と針弁とを電気的なスイツチとして用いて、弁
の開閉を検出するようにした内燃機関用燃料噴射
弁がある。(Prior art) Taking advantage of the fact that the main part of a fuel injection valve for an internal combustion engine is made of a conductive material, the needle valve and the needle valve guide part of the nozzle body are electrically insulated, and the valve seat and There is a fuel injection valve for an internal combustion engine that uses a needle valve as an electrical switch to detect opening and closing of the valve.
たとえば特開昭55−50188号に開示された内燃
機関用燃料噴射弁によれば前記ガイド部分と針弁
との間に空隙を設け、該空隙に燃料油が充満する
ことを利用して針弁とノズル本体の針弁ガイド部
分とを電気的に絶縁している。また特開昭57−
52672号に開示されたものによれば、ノズル本体
の針弁ガイド部に当接する針弁外周に酸化アルミ
ニユウムよりなる絶縁層を形成して、相互に電気
的絶縁を行なつている。 For example, according to a fuel injection valve for an internal combustion engine disclosed in Japanese Patent Application Laid-Open No. 55-50188, a gap is provided between the guide portion and the needle valve, and the needle valve is operated by utilizing the fact that the gap is filled with fuel oil. and the needle valve guide portion of the nozzle body are electrically insulated. Also, JP-A-57-
According to the method disclosed in No. 52672, an insulating layer made of aluminum oxide is formed on the outer periphery of the needle valve that abuts the needle valve guide portion of the nozzle body, thereby providing electrical insulation from each other.
しかし前記した従来の内燃機関用燃料噴射弁に
よるときは、針弁に一端が電気的に接続された接
続用導体を、内燃機関用燃料噴射弁外にまで導出
せねばならない欠点を有していた。 However, when using the above-mentioned conventional fuel injection valve for internal combustion engines, there was a drawback that the connecting conductor, one end of which was electrically connected to the needle valve, had to be led out of the fuel injection valve for internal combustion engines. .
また接続用導体の内燃機関用燃料噴射弁外への
導出は内燃機関用燃料噴射弁の構造を複雑化する
とともに、その寸法および／または形状が制約さ
れることが多く、耐久性を得るための十分な強度
の維持は困難である欠点があつた。 In addition, leading the connection conductor outside the fuel injection valve for internal combustion engines complicates the structure of the fuel injection valve for internal combustion engines, and often limits its size and/or shape. The drawback was that it was difficult to maintain sufficient strength.
またさらに接続用導体の取り出し位置にも制約
が生ずる欠点があつた。 Furthermore, there is a drawback that the position from which the connecting conductor can be taken out is also restricted.
さらに、ノズルホルダ内部に接続用導体との接
続部品が組付けられるために、内燃機関用燃料噴
射弁の組立作業が複雑になるほか、調整作業も複
雑になる欠点があつた。 Furthermore, since the connection parts for the connection conductor are assembled inside the nozzle holder, the assembly work of the fuel injector for an internal combustion engine is complicated, and the adjustment work is also complicated.
（考案の目的）
本考案は上記にかんがみなされたもので、上記
の欠点を解消し、従来と同一の組立作業および調
整作業により組立および調整が可能であり、電気
的スイツチの接点の取出し位置の自由度を極めて
大きくした内燃機関用燃料噴射弁を提供すること
を目的とする。(Purpose of the invention) The present invention has been developed in view of the above, eliminates the above-mentioned drawbacks, can be assembled and adjusted by the same assembly and adjustment work as the conventional one, and has the ability to change the position of the contact of the electrical switch. An object of the present invention is to provide a fuel injection valve for an internal combustion engine that has an extremely large degree of freedom.
この目的はノズルホルダとノズル本体に電気的
に接続された袋ナツトとを電気的に絶縁するとと
もに、針弁に電気的に接続されたノズルホルダと
前記スイツチ部分を除くノズル本体とを電気的に
絶縁し、ノズルホルダに接続される燃料供給管お
よび燃料排出管とノズルホルダとの間を電気的に
絶縁する絶縁層をノズルホルダの表面に形成する
ことにより達成される。 The purpose of this is to electrically insulate the nozzle holder and the cap nut that is electrically connected to the nozzle body, and to electrically insulate the nozzle holder that is electrically connected to the needle valve and the nozzle body except for the switch part. This is achieved by forming an insulating layer on the surface of the nozzle holder to electrically insulate between the nozzle holder and the fuel supply pipe and fuel discharge pipe connected to the nozzle holder.
以下、本考案を実施例により説明する。 The present invention will be explained below with reference to examples.
（本考案の一実施例の構成）
第１図は本考案の一実施例の断面図であり、第
２図は本考案の一実施例における針弁先端部分の
拡大図である。(Configuration of one embodiment of the present invention) Fig. 1 is a sectional view of one embodiment of the present invention, and Fig. 2 is an enlarged view of the tip portion of the needle valve in one embodiment of the present invention.
内燃機関用燃料噴射弁は導電性材料よりなる、
弁座部１ａが形成されたノズル本体１、ノズル本
体１のガイド孔１ｂに摺動自在に装入されて弁座
部１ａと協働して噴射開口を制御する円錐部２ａ
が形成された針弁２、ノズルホルダ３、ノズルホ
ルダ３と針弁２間に介装された中間部材４、針弁
２が装入されたノズル本体１および中間部材４が
挿入されかつノズルホルダ３が螺着されてノズル
本体１、中間部材４およびノズルホルダ３を固定
して一体としかつ内燃機関に装着される袋ナツト
５を有している。 Fuel injection valves for internal combustion engines are made of conductive materials.
A nozzle body 1 in which a valve seat portion 1a is formed, and a conical portion 2a that is slidably inserted into a guide hole 1b of the nozzle body 1 and cooperates with the valve seat portion 1a to control the injection opening.
The needle valve 2 in which the needle valve 2 is formed, the nozzle holder 3, the intermediate member 4 interposed between the nozzle holder 3 and the needle valve 2, the nozzle main body 1 in which the needle valve 2 is inserted, and the intermediate member 4 inserted and the nozzle holder 3 is screwed to fix the nozzle main body 1, intermediate member 4, and nozzle holder 3 as one body, and has a cap nut 5 that is mounted on an internal combustion engine.
針弁２とノズル本体１の針弁ガイド孔１ｂ内面
とを電気的に絶縁するために針弁２の針弁ガイド
孔１ｂとの接触面にはイオンプレテイング法また
はスパツタリング法によりSiO2、Al2O3または酸
化ジルコン等の絶縁被覆膜を付着させて絶縁層が
形成してある。また針弁２の先端チツプ部分２ｂ
の外周にも燃料油の燃焼により付着する炭素にて
チツプ部分２ｂとノズル本体１とが電気的に接触
することを防止するために同様に絶縁層が形成し
てある。 In order to electrically insulate the needle valve 2 and the inner surface of the needle valve guide hole 1b of the nozzle body 1, the contact surface of the needle valve 2 with the needle valve guide hole 1b is coated with SiO 2 or Al by an ion plating method or a sputtering method. An insulating layer is formed by depositing an insulating coating film such as 2 O 3 or zirconium oxide. Also, the tip portion 2b of the needle valve 2
An insulating layer is similarly formed on the outer periphery of the nozzle body 1 to prevent electrical contact between the tip portion 2b and the nozzle body 1 due to carbon deposited by combustion of fuel oil.
また袋ナツト５はそのねじ部分５ａにより内燃
機関に螺着される。袋ナツト５の内燃機関との接
触部分には袋ナツト５と内燃機関とを電気的に絶
縁するために、針弁２の場合と同様の方法によつ
て絶縁層が形成してある。 Further, the cap nut 5 is screwed onto the internal combustion engine through its threaded portion 5a. An insulating layer is formed on the contact portion of the cap nut 5 with the internal combustion engine by the same method as in the case of the needle valve 2 in order to electrically insulate the cap nut 5 and the internal combustion engine.
一方、ノズルホルダ３内にはスプリング室６が
形成してあり、針弁２の後端には一端をスプリン
グ室６内にまで突出させた針弁受け７が嵌装して
あり、針弁受け７とノズルホルダ３との間には針
弁ばねとしてのコイルばね８が装入してある。こ
こで針弁受け７も導電性材料からなつている。し
たがつて針弁２とノズルホルダ３とは針弁受け７
とコイルばね８とを介して電気的に接続された状
態になつている。一方、ノズルホルダ３には噴射
ポンプからの燃料油を導く図示しない第１の導管
が接続される接続部３ａおよび針弁２とノズル本
体１との間隙を介して針弁２を潤滑した燃料油を
燃料タンク側に戻すための図示しない第２の導管
が接続される接続部３ｂが形成してある。またノ
ズルホルダ３、中間部材４およびノズル本体１に
は、ノズル本体１と針弁２とで形成された油溜室
９に第１の導管から導かれた燃料油を導く通油孔
３Ｃ、４ａおよび１Ｃが穿設してあり、さらにノ
ズルホルダ３にはスプリング室６内の戻り燃料油
を第２の導管に導く通油孔３ｄが穿設してある。
ここでノズルホルダ３には、ノズルホルダ３と中
間部材４とを電気的に絶縁するためにノズルホル
ダ３と中間部材４との当接面、ノズルホルダ３と
袋ナツト５とを電気的に絶縁するためにノズルホ
ルダ３と袋ナツト５との当接面、ノズルホルダ３
と第１の導管とを絶縁するためにノズルホルダ３
と第１の導管との当接面およびノズルホルダ３と
第２の導管とを絶縁するためにノズルホルダ３と
第２の導管との当接面には少なくとも絶縁層が形
成してある。なお第１図および第２図において絶
縁層は斑点で示してある。 On the other hand, a spring chamber 6 is formed in the nozzle holder 3, and a needle valve receiver 7 with one end protruding into the spring chamber 6 is fitted at the rear end of the needle valve 2. A coil spring 8 as a needle valve spring is inserted between the nozzle holder 7 and the nozzle holder 3. Here, the needle valve receiver 7 is also made of an electrically conductive material. Therefore, the needle valve 2 and the nozzle holder 3 are the needle valve receiver 7.
The coil spring 8 is electrically connected to the coil spring 8 through the coil spring 8. On the other hand, the nozzle holder 3 has a connecting portion 3a to which a first conduit (not shown) that guides fuel oil from the injection pump is connected, and a fuel oil lubricating the needle valve 2 through a gap between the needle valve 2 and the nozzle body 1. A connecting portion 3b is formed to which a second conduit (not shown) for returning the fuel to the fuel tank side is connected. Further, the nozzle holder 3, the intermediate member 4, and the nozzle body 1 have oil passage holes 3C and 4a for guiding the fuel oil led from the first conduit to the oil reservoir chamber 9 formed by the nozzle body 1 and the needle valve 2. and 1C are formed in the nozzle holder 3, and an oil passage hole 3d is further formed in the nozzle holder 3 for guiding the return fuel oil in the spring chamber 6 to the second conduit.
Here, the nozzle holder 3 includes a contact surface between the nozzle holder 3 and the intermediate member 4 to electrically insulate the nozzle holder 3 and the intermediate member 4, and a cap nut 5 to electrically insulate the nozzle holder 3 and the intermediate member 5. The contact surface between the nozzle holder 3 and the cap nut 5,
and the first conduit.
An insulating layer is formed at least on the contact surface between the nozzle holder 3 and the second conduit in order to insulate the contact surface between the nozzle holder 3 and the second conduit and the nozzle holder 3 and the second conduit. In addition, in FIGS. 1 and 2, the insulating layer is shown by spots.
また一方、ノズルホルダ３および袋ナツト５に
はそれぞれ各別に電気的接続用の導線１０および
１１が溶着してある。 On the other hand, conductive wires 10 and 11 for electrical connection are welded to the nozzle holder 3 and the cap nut 5, respectively.
（本考案の一実施例の作用）
以上の如く構成した本考案の一実施例におい
て、第１の導管を介して燃料噴射ポンプから供給
された燃料油は通油孔３ｃ，４ａ，１ｃを介して
油溜室９に導かれ、油溜室９内の燃料油の圧力が
コイルばね８により設定された所定圧力を超える
と、油溜室９内の燃料油の圧力により針弁２はコ
イルバネ８の力に抗して上昇、弁座１ａと針弁２
の円錐部２ａとで形成される噴射開口は開き燃料
の噴射が行なわれる。(Operation of one embodiment of the present invention) In one embodiment of the present invention configured as described above, fuel oil supplied from the fuel injection pump via the first conduit is passed through the oil passage holes 3c, 4a, and 1c. When the pressure of the fuel oil in the oil reservoir chamber 9 exceeds a predetermined pressure set by the coil spring 8, the pressure of the fuel oil in the oil reservoir chamber 9 causes the needle valve 2 to move against the coil spring 8. rises against the force of valve seat 1a and needle valve 2
The injection opening formed by the conical portion 2a opens and fuel is injected.
一方、ノズル本体１と中間部材４と袋ナツト５
とは電気的に導通した状態にあり、針弁２とノズ
ルホルダ３とは針弁受け７およびコイルばね８を
介して電気的に導通した状態にある。燃料噴射弁
が閉弁状態にあつたときは弁座１ａと針弁２の円
錐部２ａとは当接して電気的に接続された状態に
あつた導体１０と１１との導通は、燃料噴射弁が
開状態になつたことによつて弁座１ａと針弁２の
円錐部２ａとが離れ、前記絶縁層群によつて非導
通状態となる。また、燃料油の圧力が低下したと
きはコイルばね８の押圧力により針弁２は下降し
て弁座１ａと針弁２の円錐部２ａとは当接して電
気的に接続された状態になる。この結果電気的に
非導通となつていた導体１０と１１とは導通す
る。したがつて、導体１０と１１との導通、非導
通を検出することにより燃料噴射弁の開、閉が検
出される。 On the other hand, the nozzle body 1, the intermediate member 4, and the cap nut 5
The needle valve 2 and the nozzle holder 3 are electrically connected via the needle valve receiver 7 and the coil spring 8. When the fuel injection valve is in the closed state, the valve seat 1a and the conical portion 2a of the needle valve 2 are in contact with each other and the conductors 10 and 11 are electrically connected. When the valve is in the open state, the valve seat 1a and the conical portion 2a of the needle valve 2 are separated, and the insulating layer group creates a non-conducting state. Further, when the pressure of the fuel oil decreases, the needle valve 2 is lowered by the pressing force of the coil spring 8, and the valve seat 1a and the conical part 2a of the needle valve 2 are brought into contact and electrically connected. . As a result, conductors 10 and 11, which had been electrically non-conductive, become electrically conductive. Therefore, by detecting conduction or non-conduction between the conductors 10 and 11, opening or closing of the fuel injection valve is detected.
この場合において、燃料噴射弁の開閉によつて
非接触となる弁座１ａと針弁２の円錐部２ａを除
いて、電気的に接続されたノズル本体１と中間部
材４と袋ナツト５と、電気的に接続された針弁２
とノズルホルダ３とは電気的に絶縁層によつて絶
縁されているとともに内燃機関と袋ナツト５とも
電気的に絶縁されている。この結果燃料噴射弁の
最外周部を形成するノズルホルダ３および袋ナツ
ト５を電極として、ノズルホルダ３および袋ナツ
ト５の相互に当接していない部分に導体１０，１
１を各別に接続して、弁座１ａと針弁２の円錐部
２ａとで形成される電気的スイツチの状態を検出
することができ、電気的スイツチの接点取り出し
位置の自由度は飛躍的に増大する。また、燃料噴
射弁内部から電気的スイツチの接点を取り出すわ
けではなく、ノズル本体３および袋ナツト５の表
面側から取り出せるため電気的接続用の導体の取
り出しも容易になる。また、構造が複雑化するこ
ともない。 In this case, the nozzle body 1, the intermediate member 4, and the cap nut 5, which are electrically connected, except for the valve seat 1a and the conical portion 2a of the needle valve 2, which come into contact with each other when the fuel injection valve is opened and closed, Electrically connected needle valve 2
and the nozzle holder 3 are electrically insulated by an insulating layer, and the internal combustion engine and the cap nut 5 are also electrically insulated. As a result, the nozzle holder 3 and the cap nut 5 forming the outermost periphery of the fuel injection valve are used as electrodes, and conductors 10 and 1 are connected to the parts of the nozzle holder 3 and the cap nut 5 that are not in contact with each other.
1 can be connected separately to detect the state of the electrical switch formed by the valve seat 1a and the conical part 2a of the needle valve 2, and the degree of freedom in the position of the electrical switch contact point is dramatically increased. increase Further, since the contacts of the electrical switch are not taken out from inside the fuel injection valve, but can be taken out from the surfaces of the nozzle body 3 and the cap nut 5, it is easy to take out the conductor for electrical connection. Moreover, the structure does not become complicated.
また、燃料噴射弁を構成する要素の一部表面に
絶縁層が形成されているのみであるため、燃料噴
射弁の組立、調整の作業が複雑化することはな
い。 Furthermore, since the insulating layer is only formed on some surfaces of the elements constituting the fuel injection valve, the work of assembling and adjusting the fuel injection valve is not complicated.
また、さらにノズル本体１と針弁２とを絶縁す
るためにノズル本体１の針弁ガイド孔１ｂ周面に
絶縁層を形成してもよく、ノズルホルダ３と中間
部材４とを絶縁するために中間部材４側に絶縁層
を形成してもよく、ノズルホルダ３と袋ナツト５
とを絶縁するために袋ナツト５内面に絶縁層を形
成してもよいことは勿論である。 Further, an insulating layer may be formed on the circumferential surface of the needle valve guide hole 1b of the nozzle body 1 to further insulate the nozzle body 1 and the needle valve 2, and to insulate the nozzle holder 3 and the intermediate member 4. An insulating layer may be formed on the intermediate member 4 side, and the nozzle holder 3 and the cap nut 5
Of course, an insulating layer may be formed on the inner surface of the cap nut 5 in order to insulate the cap nut 5.
以上説明した如く本考案によれば、弁座と針弁
とで形成された電気的スイツチの電極として、ノ
ズルホルダおよび袋ナツトを用いることができ、
電気的スイツチの開閉を検出するための導線の取
付位置の自由度は増大し、かつ弁体内を通して導
出する必要もないため構造が簡易となり、電極の
取出位置、寸法および形状の制約も緩和される。
また導体の取付も容易である。 As explained above, according to the present invention, the nozzle holder and the cap nut can be used as the electrodes of the electric switch formed by the valve seat and the needle valve.
The degree of freedom in installing the conductor wire for detecting the opening and closing of an electrical switch increases, and since there is no need to lead it out through the valve body, the structure is simplified, and restrictions on the electrode extraction position, size, and shape are relaxed. .
Also, it is easy to attach the conductor.
また、燃料噴射弁の組立、調整作業も複雑化す
ることもない。 Further, the assembly and adjustment work of the fuel injection valve does not become complicated.
第１図は本考案の一実施例を示す断面図。第２
図は針弁先端部分の拡大図。
１……ノズル本体、１ａ……弁座、１ｂ……ガ
イド孔、２……針弁、２ａ……円錐部、３……ノ
ズルホルダ、３ａ……第１の導管との接続部、３
ｂ……第２の導管との接続部、４……中間部材、
５……袋ナツト、６……スプリング室、７……針
弁受け、８……針弁ばね、１０および１１……導
線。
FIG. 1 is a sectional view showing an embodiment of the present invention. Second
The figure is an enlarged view of the tip of the needle valve. DESCRIPTION OF SYMBOLS 1... Nozzle body, 1a... Valve seat, 1b... Guide hole, 2... Needle valve, 2a... Conical part, 3... Nozzle holder, 3a... Connection part with first conduit, 3
b... Connection portion with the second conduit, 4... Intermediate member,
5... Cap nut, 6... Spring chamber, 7... Needle valve receiver, 8... Needle valve spring, 10 and 11... Leading wire.
Claims (1)
装入された針弁と、該針弁の後端に嵌装された針
弁受けと、ノズルホルダ内に設けたスプリング室
内であつて、かつ前記針弁受けと前記ノズルホル
ダとの間に装入された針弁ばねと、前記ノズル本
体が嵌装され、かつ前記ノズルホルダが螺着され
て前記ノズル本体と前記ノズルホルダとを一体に
固定するとともに内燃機関に取付けられる袋ナツ
トとを備え、前記ノズル本体の針弁ガイド部分と
針弁との間を電気的に絶縁して針弁の移動による
前記弁座と前記針弁との接触、非接触により電気
的スイツチを形成する内燃機関用燃料噴射弁にお
いて、前記ノズルホルダと前記袋ナツト間をおよ
び前記ノズル本体と前記ノズルホルダ間を電気的
に絶縁し、かつ前記ノズルホルダに接続される燃
料油供給管および燃料油排出管と前記ノズルホル
ダとの間を電気的に絶縁する絶縁層をノズルホル
ダ表面に設けてなり、前記ノズルホルダおよび前
記袋ナツトを前記電気的スイツチの接点取出電極
としてなることを特徴とする内燃機関用燃料噴射
弁。 A needle valve slidably inserted into a guide hole of a nozzle body having a valve seat, a needle valve receiver fitted to the rear end of the needle valve, and a spring chamber provided in a nozzle holder. , and the needle valve spring inserted between the needle valve receiver and the nozzle holder and the nozzle body are fitted, and the nozzle holder is screwed to integrate the nozzle body and the nozzle holder. and a cap nut that is fixed to the internal combustion engine and is attached to the internal combustion engine, and electrically insulates between the needle valve guide portion of the nozzle body and the needle valve to prevent the valve seat and the needle valve from moving when the needle valve moves. In a fuel injection valve for an internal combustion engine that forms an electrical switch through contact or non-contact, the nozzle holder and the cap nut are electrically insulated, and the nozzle body and the nozzle holder are electrically insulated, and connected to the nozzle holder. An insulating layer is provided on the surface of the nozzle holder to electrically insulate between the fuel oil supply pipe and fuel oil discharge pipe and the nozzle holder. A fuel injection valve for an internal combustion engine characterized by serving as an electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26183U JPS59107052U (en) | 1983-01-07 | 1983-01-07 | Fuel injection valve for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26183U JPS59107052U (en) | 1983-01-07 | 1983-01-07 | Fuel injection valve for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59107052U JPS59107052U (en) | 1984-07-19 |
| JPS6329873Y2 true JPS6329873Y2 (en) | 1988-08-10 |
Family
ID=30132022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26183U Granted JPS59107052U (en) | 1983-01-07 | 1983-01-07 | Fuel injection valve for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59107052U (en) |
-
1983
- 1983-01-07 JP JP26183U patent/JPS59107052U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59107052U (en) | 1984-07-19 |
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