JPH07109962A - Safety valve for fuel injection device - Google Patents
Safety valve for fuel injection deviceInfo
- Publication number
- JPH07109962A JPH07109962A JP5255844A JP25584493A JPH07109962A JP H07109962 A JPH07109962 A JP H07109962A JP 5255844 A JP5255844 A JP 5255844A JP 25584493 A JP25584493 A JP 25584493A JP H07109962 A JPH07109962 A JP H07109962A
- Authority
- JP
- Japan
- Prior art keywords
- safety valve
- fuel
- pressure
- valve
- injection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、蓄圧室に蓄えた高圧燃
料を複数のインジェクタから噴射するようにした内燃機
関の燃料噴射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 injection device for an internal combustion engine in which high pressure fuel stored in a pressure accumulator is injected from a plurality of injectors.
【０００２】[0002]
【従来の技術】多気筒内燃機関の複数の気筒に対応して
設けられる複数のインジェクタに高圧燃料を供給する手
段として、蓄圧室に蓄えられた高圧燃料を各インジェク
タに供給するいわゆるコモンレール式燃料噴射装置が知
られている。この種のコモンレール式燃料噴射装置とし
て、特開平４−７２４５５号公報に示されるものは、蓄
圧式燃料噴射装置に安全弁として機能するプレッシャー
リミッタを備えている。このプレッシャーリミッタは、
コモンレール内の蓄圧室の圧力が過大圧力となった時に
開弁し、蓄圧室より燃料を逃がすことで、燃料の蓄圧の
圧力を解放するものである。2. Description of the Related Art As a means for supplying high-pressure fuel to a plurality of injectors provided corresponding to a plurality of cylinders of a multi-cylinder internal combustion engine, a so-called common rail fuel injection for supplying high-pressure fuel stored in a pressure accumulator to each injector. The device is known. As a common rail type fuel injection device of this type, the one disclosed in Japanese Patent Laid-Open No. 4-72455 includes a pressure limiter functioning as a safety valve in a pressure accumulation type fuel injection device. This pressure limiter
When the pressure of the pressure accumulating chamber in the common rail becomes excessive, the valve is opened to allow the fuel to escape from the pressure accumulating chamber to release the pressure of the accumulated pressure of the fuel.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うなプレッシャーリミッタを備えた蓄圧式燃料噴射装置
においては、この蓄圧式燃料噴射装置を内燃機関へ装着
した後にプレシャーリミッタを一度も開かずにその寿命
を終了する場合がある。たとえば長期間このようなプレ
ッシャーリミッタを開弁しないと、弁体が着座するシー
ト下流側で錆が発生し、この錆の固着によって本来開弁
動作が行われなければならない時に弁開動作が行うこと
ができないという事態が発生する恐れがある。However, in the pressure accumulating fuel injection device provided with such a pressure limiter, after the pressure accumulating fuel injection device is mounted on the internal combustion engine, the life of the pressure limiter is never opened. May end. For example, if such a pressure limiter is not opened for a long period of time, rust will occur on the downstream side of the seat where the valve body is seated, and the valve opening operation should be performed when the valve opening operation should be performed due to the adhesion of this rust. There is a possibility that a situation will occur in which it is not possible.
【０００４】本発明は、このような問題点を解決するた
めになされたもので、プレッシャーリミッタのシート下
流部に常時燃料が浸漬する状態にし、錆発生を抑制する
ことで長期間使用しなくとも本来開弁動作を行う時には
的確に弁開動作を行えるようにした信頼性の高い燃料噴
射装置の安全弁を提供することを目的とする。The present invention has been made in order to solve such problems, and the fuel is always immersed in the downstream portion of the pressure limiter seat to suppress the generation of rust, so that the fuel is not used for a long time. An object of the present invention is to provide a highly reliable safety valve for a fuel injection device, which is capable of performing an accurate valve opening operation when the valve opening operation is originally performed.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
の本発明による燃料噴射装置の安全弁は、内燃機関の複
数の気筒に供給する燃料を蓄圧した蓄圧配管を有する燃
料噴射装置に設けられる安全弁において、蓄圧配管の高
圧燃料を導入する内部通路およびこの内部通路の途中に
形成されたシート部を有するバルブボディと、前記バル
ブボディ内に収容され、前記シート部に着座または離間
することにより前記内部通路を開閉する弁体と、この弁
体を閉方向に付勢する弾性部材と、前記内部通路に接続
され、前記弁体および前記弾性部材が常に燃料に浸漬さ
れるように燃料を貯溜する燃料溜り部とを備えたことを
特徴とする。A safety valve of a fuel injection device according to the present invention for achieving the above object is a safety valve provided in a fuel injection device having a pressure accumulation pipe for accumulating fuel to be supplied to a plurality of cylinders of an internal combustion engine. A valve body having an internal passage for introducing high-pressure fuel of a pressure accumulating pipe and a seat portion formed in the middle of the internal passage, and the inside of the valve body accommodated in the valve body and seated on or separated from the seat portion. A valve body that opens and closes the passage, an elastic member that urges the valve body in a closing direction, and a fuel that is connected to the internal passage and stores fuel so that the valve body and the elastic member are constantly immersed in fuel. It is characterized by having a reservoir.
【０００６】[0006]
【作用】本発明の蓄圧式燃料噴射装置によると、蓄圧装
置の蓄圧室に連通する通路に設けられる安全弁の可動部
分が常時燃料に浸漬された状態にあるため、蓄圧室の圧
力が所定値以上になったとき安全弁の可動部分が的確に
作動し、安全弁を作動させて蓄圧室の過大圧力が発生す
るのを防止する。According to the pressure-accumulation fuel injection device of the present invention, since the movable portion of the safety valve provided in the passage communicating with the pressure-accumulation chamber of the pressure-accumulation device is always immersed in the fuel, the pressure in the pressure-accumulation chamber is equal to or higher than the predetermined value. When it becomes, the movable part of the safety valve operates properly, and the safety valve is operated to prevent excessive pressure in the pressure accumulating chamber.
【０００７】[0007]
【実施例】以下、本発明の実施例について図面に基づい
て説明する。ディーゼル機関用燃料噴射装置に本発明を
適用した第１実施例を図１〜図３に示す。図２におい
て、ディーゼル機関（以下、「エンジン」という）１に
は複数の気筒に対応して個々にインジェクタ２が配設さ
れ、インジェクタ２から各気筒への燃料の噴射は、噴射
制御用電磁弁３のオンオフにより制御される。インジェ
クタ２は各気筒共通の高圧蓄圧容器２０の蓄圧室４に接
続されており、噴射制御用電磁弁３が開弁している期
間、蓄圧室４の燃料がインジェクタ２よりエンジン１の
各気筒に噴射される。蓄圧室４には連続的に燃料噴射圧
に相当する高い所定圧が蓄圧される必要があるため、供
給配管５、吐出弁１６を経て高圧供給ポンプ７が接続さ
れる。この高圧供給ポンプ７は、燃料タンク８から公知
の低圧供給ポンプ９を経て吸入された燃料を高圧に加圧
し、蓄圧室４内の燃料を高圧に制御維持する。Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment in which the present invention is applied to a fuel injection device for a diesel engine. In FIG. 2, a diesel engine (hereinafter referred to as “engine”) 1 is provided with injectors 2 respectively corresponding to a plurality of cylinders, and fuel is injected from the injectors 2 into each cylinder by an injection control solenoid valve. Controlled by turning on and off 3. The injector 2 is connected to the accumulator chamber 4 of the high-pressure accumulator container 20 common to all cylinders, and the fuel in the accumulator chamber 4 is supplied from the injector 2 to each cylinder of the engine 1 while the injection control solenoid valve 3 is open. Is jetted. Since a high predetermined pressure corresponding to the fuel injection pressure needs to be continuously accumulated in the pressure accumulating chamber 4, the high pressure supply pump 7 is connected via the supply pipe 5 and the discharge valve 16. The high-pressure supply pump 7 pressurizes the fuel sucked from the fuel tank 8 through the well-known low-pressure supply pump 9 to a high pressure, and controls and maintains the fuel in the pressure accumulating chamber 4 at a high pressure.
【０００８】このシステムを制御する電子制御ユニット
ＥＣＵ４０には、例えばエンジン回転数センサ１２およ
び負荷センサ１３より、回転数と負荷の情報が入力さ
れ、これらの信号より判断されるエンジン運転状態に応
じて決定される最適の噴射時期、噴射量（噴射期間）と
なるようにＥＣＵ４０は各噴射制御用電磁弁３に制御信
号を出力する。これと同時に、ＥＣＵ４０は回転数と負
荷等に応じて噴射圧力が最適値となるように高圧供給ポ
ンプ７に制御信号を出力する。高圧蓄圧容器２０の蓄圧
室４に連通する一方の端部にコモンレール圧を検出する
圧力センサ１４が配設されており、圧力センサ１４の信
号が予め回転数や負荷に応じて設定した最適値となるよ
うに高圧供給ポンプ７の吐出量を制御する。The electronic control unit ECU 40 for controlling this system receives information on the number of revolutions and the load from, for example, the engine revolution number sensor 12 and the load sensor 13 and, according to the engine operating state judged from these signals. The ECU 40 outputs a control signal to each injection control solenoid valve 3 so that the optimum injection timing and injection amount (injection period) are determined. At the same time, the ECU 40 outputs a control signal to the high-pressure supply pump 7 so that the injection pressure becomes an optimum value according to the rotation speed and the load. A pressure sensor 14 for detecting the common rail pressure is arranged at one end portion of the high-pressure accumulator 20 that communicates with the accumulator chamber 4, and the signal of the pressure sensor 14 indicates an optimum value set in advance according to the number of revolutions and the load. The discharge amount of the high-pressure supply pump 7 is controlled so that
【０００９】そして、図１に示すように、高圧蓄圧容器
２０の蓄圧室４に連通する他方の端部に安全弁１５が設
けられている。安全弁１５は、図３に示すように、バル
ブボディ１６の通孔１７にコニカルシール１８がカシメ
固定されている。通孔１７の底部にはオリフィス部１９
が軸方向に連通している。バルブボディ１６のフランジ
部２１にはハウジング２２がネジ結合されている。ハウ
ジング２２の端面２２ａはガスケット２４を介してバル
ブボディ１６の底面に当接している。ハウジング２２に
形成される大径穴２５には軸方向に摺動可能な弁体２６
が収容され、この弁体２６の一方の端面２６ａにボール
２８がシート部２９との間に収容されている。ハウジン
グ２２に形成される大径穴２５に連通する小径穴３１に
は、圧縮コイルスプリング３３が収容され、圧縮コイル
スプリング３３の一方の端部３３ａが弁体２６を付勢
し、他方の端部３３ｂが所定厚さの開弁圧調整用の環状
のシム３４に当接している。環状のシム３４の中央の穴
３４ａは通孔３５、３６を経由して図１に示すように下
流側の燃料タンク８側のパイプ４０に接続されている。As shown in FIG. 1, a safety valve 15 is provided at the other end of the high pressure accumulator container 20 which communicates with the accumulator chamber 4. As shown in FIG. 3, the safety valve 15 has a conical seal 18 caulked and fixed to a through hole 17 of a valve body 16. The orifice portion 19 is provided at the bottom of the through hole 17.
Communicate in the axial direction. A housing 22 is screwed to the flange portion 21 of the valve body 16. The end surface 22 a of the housing 22 is in contact with the bottom surface of the valve body 16 via the gasket 24. The large-diameter hole 25 formed in the housing 22 has a valve body 26 slidable in the axial direction.
The ball 28 is housed between the seat portion 29 and one end surface 26 a of the valve body 26. A compression coil spring 33 is accommodated in the small diameter hole 31 communicating with the large diameter hole 25 formed in the housing 22, one end 33a of the compression coil spring 33 biases the valve body 26, and the other end thereof. 33b is in contact with an annular shim 34 having a predetermined thickness for adjusting the valve opening pressure. The central hole 34a of the annular shim 34 is connected to the pipe 40 on the downstream side of the fuel tank 8 via the through holes 35 and 36 as shown in FIG.
【００１０】図１に示すようにパイプ４０は、鉄製配管
あるいはゴムホース等からなり、安全弁１５の通孔３６
に接続されており、その接続部４１から直角方向に曲げ
られる立ち上がり部４２、さらにこの立ち上がり部４２
から接続部４１と平行に曲げられる真直部４３が延びて
おり、この真直部４３から立ち上がり部４２に平行に垂
れ下がる垂下部４４が形成されている。図１に示すよう
に、立ち上がり部４２にはその内部に燃料が充満された
状態にある。これは、真直部４３が安全弁１５の通孔３
６よりも高い位置にあることにより高低差で燃料が低い
側の接続部４１および立ち上がり部４２に常に充満した
状態に確保するためである。As shown in FIG. 1, the pipe 40 is made of iron pipe, rubber hose or the like, and has a through hole 36 for the safety valve 15.
And a rising portion 42 that is bent from the connecting portion 41 in a direction perpendicular to the connecting portion 41.
A straight portion 43 bent from the straight portion 43 extends in parallel with the connecting portion 41, and a hanging portion 44 hanging from the straight portion 43 in parallel with the rising portion 42 is formed. As shown in FIG. 1, the rising portion 42 is filled with fuel. This is because the straight portion 43 is the through hole 3 of the safety valve 15.
This is to ensure that the connection portion 41 and the rising portion 42 on the side where the fuel is low due to the height difference due to the position higher than 6 are always filled.
【００１１】上記安全弁１５は、蓄圧容器２０の蓄圧室
４の燃料圧がボール２８の開弁圧以下の場合には、ボー
ル２８はシート部２９に着座している。この状態で、蓄
圧室４の燃料圧が上昇すると、コニカルシール１８の内
部の通孔３９を通って通孔１７に導入された燃料は、圧
縮コイルスプリング３３の付勢力に抗してボール２８を
開弁する。そしてボール２８および弁体２６が図３で右
方向に移動すると、通孔１９を通って流れる燃料は、弁
体２６の周囲の大径穴２５に導入され、この高圧燃料は
小径穴２３、通孔３５、３６を通して低圧側に一気に逃
がされ、瞬時に蓄圧室４の内部は一定圧に戻される。The safety valve 15 has the ball 28 seated on the seat portion 29 when the fuel pressure in the pressure accumulating chamber 4 of the pressure accumulating container 20 is equal to or lower than the valve opening pressure of the ball 28. In this state, when the fuel pressure in the pressure accumulating chamber 4 rises, the fuel introduced into the through hole 17 through the through hole 39 inside the conical seal 18 resists the urging force of the compression coil spring 33 and moves the ball 28. Open the valve. When the ball 28 and the valve body 26 move to the right in FIG. 3, the fuel flowing through the through hole 19 is introduced into the large diameter hole 25 around the valve body 26, and this high pressure fuel passes through the small diameter hole 23 and the small diameter hole 23. The pressure is released to the low pressure side at once through the holes 35 and 36, and the inside of the pressure accumulating chamber 4 is instantly returned to a constant pressure.
【００１２】次に、(1) 噴射ポンプシステムの出荷時、
(2) 噴射ポンプシステムの内燃機関への搭載時、(3) 車
両出荷後の保守点検時に分けて説明する。 (1) 噴射ポンプシステムの出荷時、蓄圧容器２０と安全
弁１５とを装着した状態で噴射ポンプシステムが出荷さ
れる。 (2) 上記噴射ポンプシステムを内燃機関に搭載すると
き、安全弁１５の下流側にパイプ４０を配管し、そのパ
イプ１４の端部を図２に示すように燃料タンク８に接続
する。内燃機関への上記噴射ポンプシステムの搭載後、
内燃機関の運転状態をテストする。このとき、加圧手段
６０により蓄圧室４に過大圧力を印加し、安全弁１５が
適正に作動することをチェックする。安全弁１５が適正
に作動することの確認後、内燃機関の運転状態のテスト
が良好であれば、次いでこの内燃機関を搭載した車両を
出荷する。Next, (1) at the time of shipment of the injection pump system,
(2) The injection pump system will be described separately when it is installed in the internal combustion engine, and (3) the maintenance inspection after the vehicle is shipped. (1) When the injection pump system is shipped, the injection pump system is shipped with the pressure accumulating container 20 and the safety valve 15 attached. (2) When the injection pump system is mounted on an internal combustion engine, a pipe 40 is installed downstream of the safety valve 15 and the end of the pipe 14 is connected to the fuel tank 8 as shown in FIG. After mounting the injection pump system on an internal combustion engine,
Test the operating condition of the internal combustion engine. At this time, the pressurizing means 60 applies an excessive pressure to the pressure accumulating chamber 4 to check that the safety valve 15 operates properly. After confirming that the safety valve 15 operates properly, if the test of the operating state of the internal combustion engine is satisfactory, then the vehicle equipped with this internal combustion engine is shipped.
【００１３】(3) 車両の出荷後の保守点検時、パイプ４
０を取り外すことで、蓄圧容器２０と安全弁１５との作
動の確認を行う。このとき、パイプ４０は安全弁１５か
ら取り外して行う。 次に、本発明の第２実施例を図４に示す。第２実施例に
よる安全弁１５に接続するパイプ５０は、軸方向部５１
と、下方向に垂れ下がる垂下部５２と、この垂下部５２
からほぼ９０°曲げられる連結部５３と、この連結部５
３の下端から上方に立ち上がられる立ち上がり部５４
と、この立ち上がり部５４の上端から水平方向に曲げら
れる接続部５５とからなる。軸方向部５１に対し立ち上
がり部５４の頂部はそれよりも上方に上がっており、そ
の上り部分の傾斜角度θは所定値以上の大きさになって
いる。これは、角度θが所定値以上であることにより車
両が傾いても常に安全弁１５の内部に燃料が充満してい
る状態を保つためである。パイプ５０は、鉄製配管ある
いはゴムホース等からなる。(3) At the time of maintenance and inspection after the shipment of the vehicle, the pipe 4
By removing 0, the operation of the accumulator 20 and the safety valve 15 is confirmed. At this time, the pipe 40 is removed from the safety valve 15. Next, a second embodiment of the present invention is shown in FIG. The pipe 50 connected to the safety valve 15 according to the second embodiment has an axial portion 51.
And a hanging portion 52 that hangs downward, and this hanging portion 52
The connecting portion 53 that can be bent approximately 90 ° from the
Rising portion 54 that rises upward from the lower end of 3
And a connecting portion 55 that is bent in the horizontal direction from the upper end of the rising portion 54. The top of the rising portion 54 is higher than the axial portion 51, and the inclination angle θ of the rising portion is larger than a predetermined value. This is because the safety valve 15 is always filled with fuel even if the vehicle leans because the angle θ is equal to or greater than the predetermined value. The pipe 50 is made of iron pipe, rubber hose, or the like.
【００１４】この第２実施例によると、第１実施例が軸
方向部４１から上方に立ち上がる立ち上がり部４２を有
するのに対し、軸方向部５１に対し下方に垂れ下がる垂
下部５２を形成しその底部分に常に燃料を蓄える構成を
取る。この構成によっても同様に安全弁１５の内部に常
に燃料が充満されることで、弁体２６あるいはスプリン
グ３３あるいはボール２８等の錆による固着が防止され
る。従って、蓄圧容器２０の蓄圧室４内が過大圧力にな
った時、安全弁１５の動作が適正に働くことにより燃料
の過剰噴射や高圧ポンプ７側のスティックが防止される
という効果がある。According to the second embodiment, while the first embodiment has the rising portion 42 rising upward from the axial portion 41, the hanging portion 52 hanging downward from the axial portion 51 is formed and its bottom is formed. The fuel is always stored in the part. With this structure as well, the safety valve 15 is always filled with fuel, so that the valve body 26, the spring 33, the ball 28, and the like are prevented from sticking due to rust. Therefore, when the pressure in the pressure accumulating chamber 4 of the pressure accumulating container 20 becomes excessive, the safety valve 15 operates properly to prevent excessive fuel injection and stick on the high pressure pump 7 side.
【００１５】[0015]
【発明の効果】本発明の蓄圧式燃料噴射装置によると、
蓄圧室に連通する通路に設けられる安全弁が常に燃料に
浸漬した状態にあるため、蓄圧室の圧力が所定値以上に
なったとき、確実に安全弁を開弁し、燃料噴射弁からの
過剰噴射を防止するとともに、所定圧以上になることに
よる高圧ポンプのスティック状態やインジェクタの破損
を防止することができるという効果がある。According to the pressure-accumulation type fuel injection device of the present invention,
Since the safety valve provided in the passage communicating with the pressure accumulating chamber is always immersed in fuel, when the pressure in the pressure accumulating chamber exceeds a predetermined value, the safety valve should be reliably opened to prevent excessive injection from the fuel injection valve. In addition to the prevention, it is possible to prevent the high-pressure pump from sticking or being damaged by the injector when the pressure exceeds a predetermined value.
【図１】本発明の第１実施例の主要部を示す模式図であ
る。FIG. 1 is a schematic diagram showing a main part of a first embodiment of the present invention.
【図２】本発明の燃料噴射装置システムを示す配管図で
ある。FIG. 2 is a piping diagram showing a fuel injection system of the present invention.
【図３】本発明の第１実施例による安全弁を示す断面図
である。FIG. 3 is a sectional view showing a safety valve according to a first embodiment of the present invention.
【図４】本発明の第２実施例の主要部を示す模式図であ
る。FIG. 4 is a schematic diagram showing a main part of a second embodiment of the present invention.
４ 蓄圧室 １５ 安全弁 １６ バルブボディ １７ 通孔（内部通路） １９ オリフィス（内部通路） ２０ 高圧蓄圧容器 ２２ ハウジング ２５ 大径穴（内部通路） ２６ 弁体 ２８ ボール ２９ シート部 ３１ 小径穴（内部通路） ３３ 圧縮コイルスプリング ３５ 通孔（内部通路） ３６ 通孔（内部通路） ４０ パイプ ４１ 軸方向部（燃料溜り部） ４２ 立ち上がり部（燃料溜り部） ５０ パイプ ５２ 垂下部（燃料溜り部） ５３ 配管部（燃料溜り部） ５４ 立ち上がり部（燃料溜り部） 4 Accumulation chamber 15 Safety valve 16 Valve body 17 Through hole (internal passage) 19 Orifice (internal passage) 20 High pressure accumulator container 22 Housing 25 Large diameter hole (internal passage) 26 Valve body 28 Ball 29 Seat part 31 Small diameter hole (internal passage) 33 Compression Coil Spring 35 Through Hole (Internal Passage) 36 Through Hole (Internal Passage) 40 Pipe 41 Axial Part (Fuel Reservoir) 42 Rise (Fuel Reservoir) 50 Pipe 52 Drooping Part (Fuel Reservoir) 53 Piping Portion (Fuel pool) 54 Rise (fuel pool)
Claims (1)
蓄圧した蓄圧配管を有する燃料噴射装置に設けられる安
全弁において、 蓄圧配管の高圧燃料を導入する内部通路およびこの内部
通路の途中に形成されたシート部を有するバルブボディ
と、 前記バルブボディ内に収容され、前記シート部に着座ま
たは離間することにより前記内部通路を開閉する弁体
と、 この弁体を閉方向に付勢する弾性部材と、 前記内部通路に接続され、前記弁体および前記弾性部材
が常に燃料に浸漬されるように燃料を貯溜する燃料溜り
部とを備えたことを特徴とする燃料噴射装置の安全弁。1. A safety valve provided in a fuel injection device having a pressure accumulating pipe for accumulating fuel to be supplied to a plurality of cylinders of an internal combustion engine, wherein a safety valve is formed in an internal passage for introducing high pressure fuel in the accumulating pipe and in the middle of this internal passage. A valve body having a seat portion, a valve body that is housed in the valve body and opens or closes the internal passage by seating on or away from the seat portion, and an elastic member that urges the valve body in a closing direction. A safety valve for a fuel injection device, comprising: a fuel reservoir connected to the internal passage for accumulating fuel such that the valve element and the elastic member are constantly immersed in fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25584493A JP3638297B2 (en) | 1993-10-13 | 1993-10-13 | Safety valve for fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25584493A JP3638297B2 (en) | 1993-10-13 | 1993-10-13 | Safety valve for fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07109962A true JPH07109962A (en) | 1995-04-25 |
| JP3638297B2 JP3638297B2 (en) | 2005-04-13 |
Family
ID=17284382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25584493A Expired - Lifetime JP3638297B2 (en) | 1993-10-13 | 1993-10-13 | Safety valve for fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3638297B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7341043B2 (en) | 2004-06-30 | 2008-03-11 | Toyota Jidosha Kabushiki Kaisha | Fuel supply system of internal combustion engine and internal combustion engine |
| KR101103434B1 (en) * | 2010-05-04 | 2012-01-09 | 현대중공업 주식회사 | Safety Valve of Fuel Injection Apparatus |
| JP2013165585A (en) * | 2012-02-10 | 2013-08-22 | Toshiba Corp | Stator coil connection device and rotary electric machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010038139A (en) | 2008-08-08 | 2010-02-18 | Denso Corp | Accumulating fuel injection device |
-
1993
- 1993-10-13 JP JP25584493A patent/JP3638297B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7341043B2 (en) | 2004-06-30 | 2008-03-11 | Toyota Jidosha Kabushiki Kaisha | Fuel supply system of internal combustion engine and internal combustion engine |
| DE102005028931B4 (en) * | 2004-06-30 | 2008-05-08 | Toyota Jidosha Kabushiki Kaisha, Toyota | Fuel supply system for an internal combustion engine |
| CN100392229C (en) * | 2004-06-30 | 2008-06-04 | 丰田自动车株式会社 | Fuel supply system of internal combustion engine and internal combustion engine |
| KR101103434B1 (en) * | 2010-05-04 | 2012-01-09 | 현대중공업 주식회사 | Safety Valve of Fuel Injection Apparatus |
| JP2013165585A (en) * | 2012-02-10 | 2013-08-22 | Toshiba Corp | Stator coil connection device and rotary electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3638297B2 (en) | 2005-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0531533B1 (en) | Pressure accumulation type fuel jetting device | |
| US6244253B1 (en) | Pressure control valve | |
| US5715786A (en) | Device for detecting leakage in a fuel supply | |
| JP4321342B2 (en) | Common rail fuel injection system | |
| US5941215A (en) | Fuel injection system for a multicylinder internal combustion engine | |
| US5988142A (en) | Duration control of common rail fuel injector | |
| JPH09509716A (en) | Method for reducing fuel pressure in a fuel injector | |
| US5950600A (en) | Device for controlling an internal combustion engine fuel injector | |
| EP0501459A2 (en) | Common-rail fuel injection system and related method | |
| JPH02547B2 (en) | ||
| JP2003529017A (en) | A method for determining the rail pressure of an injection valve with a piezo actuator | |
| US6964262B2 (en) | Accumulator fuel injection system capable of preventing abnormally high pressure | |
| US5904300A (en) | Fuel injector | |
| US5890653A (en) | Sensing and control methods and apparatus for common rail injectors | |
| JPH07109962A (en) | Safety valve for fuel injection device | |
| JP2010216382A (en) | Abnormality determination device for fuel injection device | |
| JPH07109963A (en) | Accumulator type fuel injector | |
| JP3316894B2 (en) | Accumulation type fuel injection device abnormality judgment device | |
| JPH0472454A (en) | Safety valve for fuel injection device | |
| JPH09170512A (en) | Pressure control device in accumulator fuel injection device | |
| US20130024092A1 (en) | Device for preventing the engine from stalling in a vehicle equipped with a diesel injection system | |
| JPH07259688A (en) | Fuel injection device for directly injecting type diesel engine | |
| JP2943340B2 (en) | Accumulator type fuel injection device | |
| JPH0942105A (en) | Fuel leakage detector | |
| JP3743021B2 (en) | Accumulated fuel injection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20041206 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20050111 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080121 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110121 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120121 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130121 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140121 Year of fee payment: 9 |
|
| EXPY | Cancellation because of completion of term |