JP4163706B2 - Fuel injection device - Google Patents

Fuel injection device Download PDF

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Publication number
JP4163706B2
JP4163706B2 JP2005259099A JP2005259099A JP4163706B2 JP 4163706 B2 JP4163706 B2 JP 4163706B2 JP 2005259099 A JP2005259099 A JP 2005259099A JP 2005259099 A JP2005259099 A JP 2005259099A JP 4163706 B2 JP4163706 B2 JP 4163706B2
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valve body
valve
seat
fuel
fuel injection
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JP2007071106A (en
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直也 橋居
毅 宗実
善彦 大西
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP2005259099A priority Critical patent/JP4163706B2/en
Priority to CN 200610153609 priority patent/CN1928350A/en
Priority to CN200810189731XA priority patent/CN101476527B/en
Priority to CN2008101897324A priority patent/CN101446253B/en
Publication of JP2007071106A publication Critical patent/JP2007071106A/en
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Description

この発明は内燃機関に使用される燃料噴射装置に関するものであり、特に燃料噴霧の形状および噴射方向を改良するとともに、微粒化を促進することのできる燃料噴射装置に関するものである。   The present invention relates to a fuel injection device used for an internal combustion engine, and more particularly to a fuel injection device capable of improving atomization and improving the shape and injection direction of fuel spray.

近年、自動車などの排出ガス規制が強化されており、燃料噴射装置によって噴射される燃料噴霧の形状及び噴射方向について、様々な形状及び方向を創出することが求められるとともに、噴霧の微粒化の促進が求められている。特に燃料噴霧の微粒化については各種の検討がなされており、従来の燃料噴射装置においては、噴射口の弁座側出口端面、もしくは弁体下流側にスロットを弁体軸心に対して放射状に形成しているものがあった。   In recent years, exhaust gas regulations for automobiles and the like have been strengthened, and it has been required to create various shapes and directions of the fuel spray injected by the fuel injection device and promote atomization of the spray. Is required. In particular, various investigations have been made on atomization of fuel spray. In conventional fuel injection devices, slots are formed radially on the valve seat side outlet end face of the injection port or on the downstream side of the valve body with respect to the valve body axis. There was something that was forming.

この燃料噴射装置においては、弁体端面に噴霧が回り込むため、ポペット弁特有の噴霧角が大きい中空円錐形噴霧ではなく、噴霧角が抑制され、かつ空気との混合に適した中実の噴霧が形成される。又噴霧が弁体端面にまで回り込むことにより、単位時間に噴霧が進む距離を抑制するとともに、空気との混合による微粒化を促進するものである（特許文献１参照）。   In this fuel injection device, since the spray wraps around the end face of the valve body, it is not a hollow cone spray having a large spray angle peculiar to a poppet valve, but a solid spray that suppresses the spray angle and is suitable for mixing with air. It is formed. Further, when the spray wraps around the end face of the valve body, the distance traveled by the spray per unit time is suppressed and atomization by mixing with air is promoted (see Patent Document 1).

特開平１１−１９３７３４号公報JP-A-11-193734

従来の燃料噴射装置は以上のように構成されており、弁体が弁座に当接するシート部より下流側にスロットを設けたため、燃料噴射終了後にスロットに燃料が溜まる。そして燃料噴射装置を筒内噴射用に用いた場合は弁体に付着した燃料が高温にさらされることによりカーボンデポジットとして堆積するため、噴霧形状および微粒化を悪化させるという問題点があった。   The conventional fuel injection device is configured as described above, and since the slot is provided on the downstream side of the seat portion where the valve body abuts the valve seat, the fuel is accumulated in the slot after the fuel injection is completed. When the fuel injection device is used for in-cylinder injection, the fuel adhering to the valve body is deposited as a carbon deposit when exposed to a high temperature, and there is a problem that the spray shape and atomization are deteriorated.

また吸気管噴射用に用いた場合は弁体に付着した燃料が液滴となって落下することにより、空燃比が変動してしまうという問題点があった。   Further, when used for intake pipe injection, there is a problem that the air-fuel ratio fluctuates due to the fuel adhering to the valve body falling as droplets.

この発明は上記のような課題を解決するためになされたものであり、ガソリンエンジン用燃料噴射装置において、噴射口に燃料が付着するのを抑制するとともに、多様な噴霧形状および噴射方向を形成することができ、更に噴霧の微粒化を向上させることのできる燃料噴射装置を提供することを目的とするものである。   The present invention has been made to solve the above-described problems, and in a fuel injection device for a gasoline engine, while preventing fuel from adhering to an injection port, various spray shapes and injection directions are formed. It is another object of the present invention to provide a fuel injection device that can improve atomization of spray.

この発明に係る燃料噴射装置は、噴射口を有する弁座が設けられた弁ボディと、弁座に離接して噴射口を開閉する弁体とを有し、この弁体が下流側へ移動するときに開弁する外開弁方式のものであり、弁体には弁座と接触する部分である弁体シート部と、この弁体シート部よりも下流側に位置する弁体テーパ部とを設け、弁体シート部の傾斜角を弁体テーパ部の傾斜角より大きくなるように形成するとともに、弁ボディには弁座の下流側に弁座テーパ部を設け、弁座の傾斜角を弁座テーパ部の傾斜角より大きくなるように形成し、更に弁座出口端面に円弧状の切欠きを複数個設けたものである。 The fuel injection device according to the present invention includes a valve body provided with a valve seat having an injection port, and a valve body that opens and closes the injection port while being in contact with the valve seat, and the valve body moves downstream. The valve body is of an externally opened type, and the valve body includes a valve body seat portion that is in contact with the valve seat and a valve body taper portion that is located downstream of the valve body seat portion. The valve body seat part is formed so that the inclination angle of the valve body seat part is larger than the inclination angle of the valve body taper part, and the valve body is provided with a valve seat taper part on the downstream side of the valve seat so that the valve seat inclination angle It is formed so as to be larger than the inclination angle of the seat taper portion, and a plurality of arc-shaped notches are provided on the valve seat outlet end face.

この発明に係る燃料噴射装置によれば、噴射口を有する弁座が設けられた弁ボディと、弁座に離接して噴射口を開閉する弁体とを有し、この弁体が下流側へ移動するときに開弁する外開弁方式のものであり、弁体には弁座と接触する部分である弁体シート部と、この弁体シート部よりも下流側に位置する弁体テーパ部とを設け、弁体シート部の傾斜角を弁体テーパ部の傾斜角より大きくなるように形成するとともに、弁ボディには弁座の下流側に弁座テーパ部を設け、弁座の傾斜角を弁座テーパ部の傾斜角より大きくなるように形成し、更に弁座出口端面に円弧状の切欠きを複数個設けたので、燃料噴射装置の取り付け場所において制約を受けるような場合でも、所望する方向へ燃料を噴射することが可能となり、様々な噴射方向を形成することができるようになるとともに、様々な噴霧形状を形成させることができる。 The fuel injection device according to the present invention includes a valve body provided with a valve seat having an injection port, and a valve body that opens and closes the injection port while being in contact with the valve seat. It is of the outer valve-opening type that opens when it moves, the valve body seat part that is in contact with the valve seat on the valve body , and the valve body taper part located downstream of this valve body seat part The valve body seat portion is formed so that the inclination angle of the valve body seat portion is larger than the inclination angle of the valve body taper portion, and the valve body is provided with a valve seat taper portion on the downstream side of the valve seat, Is formed so as to be larger than the inclination angle of the valve seat taper portion, and a plurality of arc-shaped notches are provided on the valve seat outlet end face, so that it is desirable even when the installation location of the fuel injection device is restricted. It is possible to inject fuel in the direction to perform, forming various injection directions DOO together so as to thereby, it is possible to form various spray shape.

実施の形態１．
以下この発明の一実施形態を図に基づいて説明する。
図１はこの発明の実施の形態１による燃料噴射装置を示す断面図、図２は同じく先端部を示す断面図である。
本発明による燃料噴射装置には弁装置１が設けられており、この弁装置１は弁体２と弁ボディ３によって構成されている。 Embodiment 1 FIG.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing a fuel injection device according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view showing a tip portion.
The fuel injection device according to the present invention is provided with a valve device 1, which is composed of a valve body 2 and a valve body 3.

弁体２はガイド部２ａを有しており、ガイド部２ａには２面平面部２ｂが設けられている。そして燃料は弁ボディ３の内径部３ａと弁体２の間の隙間、及び内径部３ａと平面部２ｂの間の隙間を通って流れる。弁体２の先端部には弁体シート部２ｃが設けられ、弁体シート部２ｃと弁ボディ３に設けられた弁座３ｂとはシート部３ｃにおいて接触しており、弁体２と弁座３ｂによって囲まれた環状の噴射口４がシート部３ｃの下流側において形成されている。   The valve body 2 has a guide portion 2a, and the guide portion 2a is provided with a two-plane flat portion 2b. The fuel flows through the gap between the inner diameter portion 3a of the valve body 3 and the valve body 2 and the gap between the inner diameter portion 3a and the flat surface portion 2b. A valve body seat portion 2c is provided at the tip of the valve body 2, and the valve body seat portion 2c and the valve seat 3b provided on the valve body 3 are in contact with each other at the seat portion 3c. An annular injection port 4 surrounded by 3b is formed on the downstream side of the seat portion 3c.

スプリング５は弁体２を閉弁方向に付勢するためのものであり、弁体２にはアマチュア６が取り付けられるとともに、コア７がアマチュア６に対向して配置されている。又ボビン８内において電磁コイル９が巻回されることによりソレノイド装置が構成されている。   The spring 5 is for urging the valve body 2 in the valve closing direction. The armature 6 is attached to the valve body 2 and the core 7 is disposed to face the armature 6. A solenoid device is constructed by winding an electromagnetic coil 9 in the bobbin 8.

本発明による燃料噴射装置においては、開弁状態における静的流量の制御は、弁装置１の上流側に設けられたオリフィス２１により制御される。そして開弁時におけるシート部３ｃの燃料流れの断面積はオリフィス２１における流れ面積よりも充分大きく構成されており、シート部３ｃにおいて燃料の流れが詰らないようになっている。   In the fuel injection device according to the present invention, the control of the static flow rate in the valve open state is controlled by the orifice 21 provided on the upstream side of the valve device 1. The sectional area of the fuel flow in the seat portion 3c when the valve is opened is sufficiently larger than the flow area in the orifice 21 so that the fuel flow is not clogged in the seat portion 3c.

以上のように構成された燃料噴射装置においては、電磁コイル９に電流を供給することにより磁気回路が形成され、アマチュア６がコア７に引き付けられることにより弁体２は下流側へ移動し、噴射口４より燃料が内燃機関へ噴射される。そして電流を遮断すると、弁体２はスプリング５の復帰力により上流側へ移動し、燃料噴射は終了する。   In the fuel injection device configured as described above, a magnetic circuit is formed by supplying current to the electromagnetic coil 9, and the valve body 2 moves downstream by attracting the armature 6 to the core 7, thereby injecting the fuel. Fuel is injected from the port 4 into the internal combustion engine. When the current is cut off, the valve body 2 moves upstream by the restoring force of the spring 5, and the fuel injection ends.

本発明においては図２に示すように、シート部３ｃより上流側であって弁体２に３つの環状の溝１０を設けたものである。この溝１０により燃料流れに乱れが発生し、更にシート部３ｃにおいて燃料の流れが詰まらないので、シート部３ｃにおいて燃料は乱れを維持した状態で噴射口４へ流れ、噴射口４から噴射されるので、燃料噴霧の微粒化が促進される。   In the present invention, as shown in FIG. 2, three annular grooves 10 are provided in the valve body 2 on the upstream side of the seat portion 3c. Since the fuel flow is disturbed by the groove 10 and the fuel flow is not clogged in the seat portion 3c, the fuel flows to the injection port 4 in the state of maintaining the disturbance in the seat portion 3c and is injected from the injection port 4. Therefore, atomization of fuel spray is promoted.

更に従来と異なり燃料流れの乱れを発生させるための溝１０をシート部３ｃよりも上流側に設けたので、燃料噴射終了後に燃料がシート部３ｃの下流側に溜まることを抑制することができる。従ってカーボンデポジットの堆積を防ぐことができるとともに、更に吸気管噴射用に用いた場合でも、空燃比が変動することを防ぐことができる。   Furthermore, unlike the conventional case, the groove 10 for generating the turbulence of the fuel flow is provided on the upstream side of the seat portion 3c, so that it is possible to suppress the fuel from being accumulated on the downstream side of the seat portion 3c after the fuel injection is completed. Accordingly, it is possible to prevent carbon deposits from being deposited and to prevent the air-fuel ratio from fluctuating even when used for intake pipe injection.

尚図２においては、溝１０を３個設けた場合について説明したが、１個の溝を設けてもよく、更に３個以外の複数の溝を設けてもよい。   In FIG. 2, the case where three grooves 10 are provided has been described. However, one groove may be provided, and a plurality of grooves other than three may be provided.

実施の形態２．
図３はこの発明の実施の形態２による燃料噴射装置の先端部を示す断面図である。本実施形態においては、シート部３ｃより上流側であって、弁ボディ３に３つの環状の溝１１を設けたものである。この溝１１により、実施の形態１の場合と同様燃料流れに乱れが発生し、噴射口４から噴射される燃料噴霧の微粒化が促進される。 Embodiment 2. FIG.
FIG. 3 is a cross-sectional view showing a tip portion of a fuel injection device according to Embodiment 2 of the present invention. In the present embodiment, three annular grooves 11 are provided in the valve body 3 upstream of the seat portion 3c. This groove 11 causes a disturbance in the fuel flow as in the first embodiment, and promotes atomization of the fuel spray injected from the injection port 4.

尚図３においては、溝１１を３個設けた場合について説明したが、１個の溝を設けてもよく、更に３個以外の複数の溝を設けてもよい。更に弁体２及び弁ボディ３の両方に溝を設けるようにしてもよい。   In FIG. 3, the case where three grooves 11 are provided has been described. However, one groove may be provided, and a plurality of grooves other than three may be provided. Further, grooves may be provided in both the valve body 2 and the valve body 3.

実施の形態３．
図４はこの発明の実施の形態３による燃料噴射装置の先端部を示す断面図である。本実施形態においては、弁体シート部２ｃの傾斜角をα１、シート部３ｃ下流側の弁体テーパ部２ｄの傾斜角をα２としたとき、α１＞α２となるように形成するとともに、弁座３ｂの傾斜角をβ１、シート部３ｃ下流側の弁座テーパ部３ｄの傾斜角をβ２としたとき、β１＞β２となるように形成したものである。 Embodiment 3 FIG.
4 is a cross-sectional view showing a tip portion of a fuel injection device according to Embodiment 3 of the present invention. In the present embodiment, when the inclination angle of the valve body seat portion 2c is α1, and the inclination angle of the valve body taper portion 2d downstream of the seat portion 3c is α2, the valve seat is formed such that α1> α2. When the inclination angle of 3b is β1, and the inclination angle of the valve seat taper portion 3d on the downstream side of the seat portion 3c is β2, β1> β2 is formed.

更に噴射口４を構成する弁座出口端面３ｅを弁体２の軸Оに対して円弧状に傾斜させて構成し、即ち弁座出口端面３ｅが弁体端面２ｅを覆っている部分と覆っていない部分とを設けるように構成する。   Further, the valve seat outlet end face 3e constituting the injection port 4 is configured to be inclined in an arc with respect to the axis O of the valve body 2, that is, the valve seat outlet end face 3e covers the portion covering the valve body end face 2e. And a portion not provided.

以上のように構成することにより、弁体２の軸Оに対して燃料の噴射角が傾くことになり、しかも弁座テーパ部３ｄが弁体２を覆っている部分が連続的に変化するため、軸Оに対して偏向した噴霧を形成できる。これにより、燃料噴射装置の取り付け場所において制約を受けるような場合でも、所望する方向へ燃料を噴射することが可能となり、様々な噴射方向を形成することができるようになる。   With the configuration described above, the fuel injection angle is inclined with respect to the axis O of the valve body 2, and the portion where the valve seat taper portion 3d covers the valve body 2 continuously changes. A spray deflected with respect to the axis О can be formed. As a result, even when the installation location of the fuel injection device is restricted, fuel can be injected in a desired direction, and various injection directions can be formed.

尚弁座出口端面３ｅを直線状に傾斜させて構成することも考えられるが、この場合噴霧断面は図５のＰに示すように、一部分が突出し、一様な楕円とはならない。これに対して図４に示すように、弁座出口端面３ｅを円弧状に傾斜させて構成した場合、噴霧断面は図５のＱに示すように、一様な楕円形となり、適切な噴霧が得られる。又図１に示すような弁構造において、弁座出口端面を傾斜させるように構成してもよい。   In addition, although it can also be considered that the valve seat outlet end face 3e is inclined linearly, in this case, as shown in P of FIG. 5, a part of the spray cross section protrudes and does not become a uniform ellipse. On the other hand, as shown in FIG. 4, when the valve seat outlet end face 3e is inclined in an arc shape, the spray cross section becomes a uniform ellipse as shown in Q of FIG. can get. Further, in the valve structure as shown in FIG. 1, the valve seat outlet end face may be inclined.

実施の形態４．
図６はこの発明の実施の形態４による燃料噴射装置の先端部を示す正面図、図７は図６におけるＡ−Ａ線断面図であり、噴霧の形状を示すための図である。本実施形態においては、上記実施の形態３の場合と同様、弁体シート部２ｃの傾斜角をα１、シート部３ｃ下流側の弁体テーパ部２ｄの傾斜角をα２としたとき、α１＞α２となるように形成するとともに、弁座３ｂの傾斜角をβ１、シート部３ｃ下流側の弁座テーパ部３ｄの傾斜角をβ２としたとき、β１＞β２となるように形成したものである。 Embodiment 4 FIG.
6 is a front view showing a front end portion of a fuel injection device according to Embodiment 4 of the present invention, and FIG. 7 is a cross-sectional view taken along the line AA in FIG. In the present embodiment, when the inclination angle of the valve body seat portion 2c is α1 and the inclination angle of the valve body taper portion 2d on the downstream side of the seat portion 3c is α2, as in the third embodiment, α1> α2 In addition, when the inclination angle of the valve seat 3b is β1 and the inclination angle of the valve seat taper portion 3d on the downstream side of the seat portion 3c is β2, β1> β2 is formed.

又噴射口４の弁座出口端面３ｅに円弧状の切欠き３ｆを弁体２の軸Оに対して点対称となる位置に２個設け、この切欠き３ｆと弁座出口端面３ｅとを円弧状につなぐものである。尚円弧状の切欠き３ｆは３個以上設けるようにしてもよい。   In addition, two arc-shaped notches 3f are provided on the valve seat outlet end face 3e of the injection port 4 at positions that are point-symmetric with respect to the axis О of the valve body 2, and the notches 3f and the valve seat outlet end face 3e are circular. It is connected in an arc. Three or more arc-shaped notches 3f may be provided.

以上のように構成することにより、弁座出口端面３ｅが弁体端面２ｅを覆っている部分と覆っていない部分が存在するようになり、図７に示すように、噴霧は２方向に分配されることになる。   By configuring as described above, there are a portion where the valve seat outlet end surface 3e covers the valve body end surface 2e and a portion which does not cover, and the spray is distributed in two directions as shown in FIG. Will be.

図８は別の形態による燃料噴射装置の先端部を示す正面図、図９は噴霧の形状を示すための断面図である。図６に示したものとは円弧の曲率が相違する切欠き３ｇを設けたものであり、このように様々に曲率を変えることにより、噴霧の横断面の偏平率を図９に示すように変化させることができる。   FIG. 8 is a front view showing the tip of a fuel injection device according to another embodiment, and FIG. 9 is a cross-sectional view showing the shape of the spray. 6 is provided with a notch 3g having a different arc curvature, and by changing the curvature in this manner, the flatness of the cross section of the spray changes as shown in FIG. Can be made.

又上記に示したような切欠きを、図１に示したような弁構造において設けるようにしてもよい。以上のように本実施形態によれば、様々な噴霧形状を形成させることができる。   Further, the notch as described above may be provided in the valve structure as shown in FIG. As described above, according to the present embodiment, various spray shapes can be formed.

この発明の実施の形態１による燃料噴射装置を示す断面図である。It is sectional drawing which shows the fuel-injection apparatus by Embodiment 1 of this invention. この発明の実施の形態１による燃料噴射装置の先端部を示す断面図である。It is sectional drawing which shows the front-end | tip part of the fuel-injection apparatus by Embodiment 1 of this invention. この発明の実施の形態２による燃料噴射装置の先端部を示す断面図である。It is sectional drawing which shows the front-end | tip part of the fuel-injection apparatus by Embodiment 2 of this invention. この発明の実施の形態３による燃料噴射装置の先端部を示す断面図である。It is sectional drawing which shows the front-end | tip part of the fuel-injection apparatus by Embodiment 3 of this invention. 噴霧の形状を示すための断面図である。It is sectional drawing for showing the shape of spraying. この発明の実施の形態４による燃料噴射装置の先端部を示す断面図である。It is sectional drawing which shows the front-end | tip part of the fuel-injection apparatus by Embodiment 4 of this invention. 図６におけるＡ−Ａ線断面図である。It is the sectional view on the AA line in FIG. この発明の実施の形態４による燃料噴射装置の先端部を示す正面図である。It is a front view which shows the front-end | tip part of the fuel-injection apparatus by Embodiment 4 of this invention. 噴霧の形状を示すための断面図である。It is sectional drawing for showing the shape of spraying.

符号の説明Explanation of symbols

２ 弁体、２ｃ 弁体シート部、２ｄ 弁体テーパ部、３ 弁ボディ、３ｂ 弁座、
３ｃ シート部、３ｄ 弁体テーパ部、３ｅ 弁座出口端面、３ｆ 切欠き、
１０，１１ 溝。 2 valve body, 2c valve body seat part, 2d valve body taper part, 3 valve body, 3b valve seat,
3c Seat part, 3d Taper taper part, 3e Valve seat outlet end face, 3f Notch,
10,11 groove.

Claims (1)

噴射口を有する弁座が設けられた弁ボディと、上記弁座に離接して上記噴射口を開閉する弁体とを有し、この弁体が下流側へ移動するときに開弁する外開弁方式の燃料噴射装置において、上記弁体には上記弁座と接触する部分である弁体シート部と、この弁体シート部よりも下流側に位置する弁体テーパ部とを設け、上記弁体シート部の傾斜角を上記弁体テーパ部の傾斜角より大きくなるように形成するとともに、上記弁ボディには上記弁座の下流側に弁座テーパ部を設け、上記弁座の傾斜角を上記弁座テーパ部の傾斜角より大きくなるように形成し、更に弁座出口端面に円弧状の切欠きを複数個設けたことを特徴とする燃料噴射弁。 A valve body provided with a valve seat having an injection port; and a valve body that opens and closes the injection port by being in contact with the valve seat and opens when the valve body moves downstream. In the valve-type fuel injection device, the valve body is provided with a valve body seat portion that is in contact with the valve seat, and a valve body taper portion that is located downstream of the valve body seat portion. the inclination angle of the body seat portion so as to form so as to be larger than the inclination angle of the valve body taper part, to the valve body provided with a valve seat taper portion on the downstream side of the valve seat, the inclination angle of the valve seat a fuel injection valve, characterized in that formed to be larger than the inclination angle of the valve seat tapered portion, is provided a plurality of-out arcuate cutout further valve seat outlet end face.
JP2005259099A 2005-09-07 2005-09-07 Fuel injection device Expired - Fee Related JP4163706B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2005259099A JP4163706B2 (en) 2005-09-07 2005-09-07 Fuel injection device
CN 200610153609 CN1928350A (en) 2005-09-07 2006-09-06 Fuel jet device
CN200810189731XA CN101476527B (en) 2005-09-07 2006-09-06 Fuel injector
CN2008101897324A CN101446253B (en) 2005-09-07 2006-09-06 Fuel injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005259099A JP4163706B2 (en) 2005-09-07 2005-09-07 Fuel injection device

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JP2007071106A JP2007071106A (en) 2007-03-22
JP4163706B2 true JP4163706B2 (en) 2008-10-08

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CN103277225A (en) * 2013-06-07 2013-09-04 苏州柏德纳科技有限公司 Oil injection nozzle
CN108005826B (en) * 2017-11-21 2021-07-02 山东鑫亚精密机械制造有限公司 Frequency conversion fuel sprayer
JP7068488B2 (en) * 2018-10-23 2022-05-16 三菱電機株式会社 Electromagnetic fuel injection valve

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Publication number Priority date Publication date Assignee Title
US4408722A (en) * 1981-05-29 1983-10-11 General Motors Corporation Fuel injection nozzle with grooved poppet valve
JP2732716B2 (en) * 1991-02-20 1998-03-30 株式会社デンソー Air blast valve
JP2001200775A (en) * 2000-01-19 2001-07-27 Matsukichi Haruyama Fuel injection valve
DE102004028998A1 (en) * 2004-06-16 2006-01-05 Robert Bosch Gmbh High-pressure pump for a fuel injection device of an internal combustion engine

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CN101476527A (en) 2009-07-08
JP2007071106A (en) 2007-03-22
CN101446253B (en) 2012-01-18
CN101476527B (en) 2012-01-04
CN101446253A (en) 2009-06-03
CN1928350A (en) 2007-03-14

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