JP2001173540A - High pressure fuel pump - Google Patents
High pressure fuel pumpInfo
- Publication number
- JP2001173540A JP2001173540A JP37677799A JP37677799A JP2001173540A JP 2001173540 A JP2001173540 A JP 2001173540A JP 37677799 A JP37677799 A JP 37677799A JP 37677799 A JP37677799 A JP 37677799A JP 2001173540 A JP2001173540 A JP 2001173540A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- electromagnetic spill
- chamber
- fuel pump
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電磁スピル弁を有す
る高圧燃料ポンプに関し、詳しくは、電磁スピル弁の漏
洩量によって、吐出燃料の最高圧力が低下するのを防止
する高圧燃料ポンプに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-pressure fuel pump having an electromagnetic spill valve, and more particularly, to a high-pressure fuel pump for preventing a maximum pressure of discharged fuel from being reduced by a leakage amount of the electromagnetic spill valve. .
【０００２】[0002]
【従来の技術】図３、図４、図５を参照して従来技術に
ついて説明する。図３は自動車の直噴型内燃機関へ高圧
燃料を供給するための従来の高圧燃料ポンプ（特開平１
１−８２２２５号公報および特許２７６２６５２号公報
参照）の概念図、図４は前記高圧燃料ポンプの縦断面
図、図５は前記高圧燃料ポンプに用いられる電磁スピル
弁の縦断面図である。なお、図中の矢印は燃料の流れる
方向を示す。図４において、ポンプハウジング５の中央
部に設けられたシリンダ６内をカム７の回転により往復
摺動するプランジャ８および吸入側通路９に設けられた
吸入側チェック弁１０ならびに吐出側通路１１に設けら
れた吐出側チェック弁１２等とにより高圧燃料ポンプ２
０が構成されている。チェック弁１０、１２は燃料の流
れの方向に対して開き、逆方向に対しては閉じるよう組
み付けられている。2. Description of the Related Art The prior art will be described with reference to FIGS. 3, 4 and 5. FIG. FIG. 3 shows a conventional high-pressure fuel pump for supplying high-pressure fuel to a direct injection type internal combustion engine of an automobile (Japanese Patent Laid-Open No.
FIG. 4 is a longitudinal sectional view of the high-pressure fuel pump, and FIG. 5 is a longitudinal sectional view of an electromagnetic spill valve used in the high-pressure fuel pump. The arrows in the figure indicate the direction in which the fuel flows. In FIG. 4, a plunger 8 reciprocally slides in a cylinder 6 provided at a center portion of a pump housing 5 by rotation of a cam 7 and a suction-side check valve 10 provided in a suction-side passage 9 and a discharge-side passage 11 provided in a suction-side passage 9. High-pressure fuel pump 2
0 is configured. The check valves 10, 12 are assembled so as to open in the direction of fuel flow and close in the opposite direction.
【０００３】吸入側通路９から分岐した通路９ａには圧
力調整弁１３が設けられ、吸入側燃料の圧力を一定に保
つよう機能する。圧力調整弁１３を通過した燃料は図示
しない燃料タンクに戻される。図５において、シリンダ
孔６ａとプランジャ８とで形成されるポンプ室６ｂの上
部はプレート２により閉塞され、プレート２の上部は電
磁スピル弁１８が併設されバルブ室１８ａを形成してい
る。プレート２にはポンプ室６ｂとバルブ室１８ａとを
結ぶ複数の連通孔２ａが穿設されている。電磁スピル弁
１８は通電によりバルブ１５が閉じ非通電により開くよ
う構成され、非通電時にはスプリング１４の押圧力を受
けバルブ１５の先端平面部１５ａがプレート２のバルブ
室１８ａ側に当接する。A pressure regulating valve 13 is provided in a passage 9a branched from the intake passage 9, and functions to keep the pressure of the intake fuel constant. The fuel that has passed through the pressure regulating valve 13 is returned to a fuel tank (not shown). In FIG. 5, an upper part of a pump chamber 6b formed by a cylinder hole 6a and a plunger 8 is closed by a plate 2, and an upper part of the plate 2 is provided with an electromagnetic spill valve 18 to form a valve chamber 18a. The plate 2 is provided with a plurality of communication holes 2a connecting the pump chamber 6b and the valve chamber 18a. The electromagnetic spill valve 18 is configured such that the valve 15 is closed by energization and opened by non-energization. When the power is not energized, the flat surface 15a of the valve 15 comes into contact with the valve chamber 18a of the plate 2 under the pressing force of the spring 14.
【０００４】プランジャ８の下死点からカム７（図４参
照）が回転し始めるとプランジャ８は上昇して昇圧を始
める。プランジャ８の昇圧工程の初期段階、すなわち、
下死点から所定のストロークの間だけ、電磁スピル弁１
８を非通電にして燃料を漏洩（スピル）させることによ
り、高圧燃料ポンプ２０の最大吐出圧力を調整してい
る。プランジャ８の前記所定ストロークはカム７の回転
角度を図示しない検出器で検出し、カム形状から計算し
てプランジャ８のストロークと見なされる。バルブ１５
を通過した燃料は通路１８ｂおよびスピル弁室１８ｃを
経て外部に設けられたチェック弁１６（図３参照）を経
由して図示しない燃料タンクに戻される。When the cam 7 (see FIG. 4) starts rotating from the bottom dead center of the plunger 8, the plunger 8 rises and starts increasing pressure. The initial stage of the pressure rising process of the plunger 8, that is,
Electromagnetic spill valve 1 only during a predetermined stroke from bottom dead center
The maximum discharge pressure of the high-pressure fuel pump 20 is adjusted by causing the fuel to leak (spill) by turning off the power supply 8. The predetermined stroke of the plunger 8 is determined by detecting the rotation angle of the cam 7 with a detector (not shown) and calculating from the cam shape to be the stroke of the plunger 8. Valve 15
Is returned to a fuel tank (not shown) via a check valve 16 (see FIG. 3) provided outside via a passage 18b and a spill valve chamber 18c.
【０００５】プランジャ８のストロークが所定量まで達
すると、図示しない電子制御装置からの所定のタイミン
グで電磁スピル弁１８に通電がされバルブ１５が閉じよ
うとするが、バルブ１５の先端平面部１５ａがプレート
２の当接面から離れようとするとき、接触面間は負圧が
発生し、特に接触面が液中にあるため前記両面の貼り付
きが顕著でバルブ１５の離間が遅れる現象が生ずる。結
果として、電磁スピル弁１８の閉塞が遅れることにな
り、燃料の漏洩量が所定量より増加して、所定の最大吐
出圧力が確保できないおそれがある。When the stroke of the plunger 8 reaches a predetermined amount, the electromagnetic spill valve 18 is energized at a predetermined timing from an electronic control unit (not shown) to close the valve 15, but the flat end portion 15a of the valve 15 is closed. When the plate 2 is to be separated from the contact surface, a negative pressure is generated between the contact surfaces. Particularly, since the contact surface is in the liquid, the sticking of the two surfaces is remarkable, and a phenomenon that the separation of the valve 15 is delayed occurs. As a result, the closing of the electromagnetic spill valve 18 is delayed, and the amount of fuel leakage increases from a predetermined amount, and a predetermined maximum discharge pressure may not be secured.
【０００６】この現象を改善するにはバルブ１５を吸引
するコイルの吸引力を強くする必要があり、強くした場
合は電磁スピル弁１８が大型になってしまう。そこでそ
の改良技術として、図６に示す電磁スピル弁の構成が考
慮され、特許２７６２６５２号公報の図５にも同様の構
成が記載されている。すなわち、本願図６により説明す
ると、バルブ４の先端平面部４ａに凹部４ｂを設けると
ともに、プレート１７のバルブ４当接面の中央に貫通孔
１７ａを設けることにより、バルブ４の先端平面部４ａ
とプレート１７との間にポンプ室の燃料が進入し易くし
てバルブ４とプレート１７の貼り付きを防止するもので
ある。In order to improve this phenomenon, it is necessary to increase the attraction force of the coil for attracting the valve 15, and if it is increased, the size of the electromagnetic spill valve 18 becomes large. Therefore, as an improvement technique, the configuration of the electromagnetic spill valve shown in FIG. 6 is considered, and a similar configuration is described in FIG. 5 of Japanese Patent No. 2762652. That is, as described with reference to FIG. 6 of the present application, the concave portion 4b is provided in the flat end portion 4a of the valve 4 and the through hole 17a is provided in the center of the contact surface of the plate 17 with the valve 4.
This facilitates the fuel in the pump chamber to enter the gap between the valve 4 and the plate 17 to prevent sticking of the valve 4 and the plate 17.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、前記構
成においては、バルブ４の貼り付きは解消されるもの
の、プランジャ８の昇圧開始とともに、加圧されたポン
プ室６ｂ内の燃料が貫通孔１７ａを通過してバルブ４の
先端平面部４ａの凹部４ｂに突き当たり、バルブ４を押
し上げる（電磁スピル弁を閉じさせる）方向に作用す
る。すなわち、電磁スピル弁１９は所定時期よりも速く
閉じることになり、結果として燃料の漏洩量が所定量よ
りも減少することになり、高圧燃料ポンプの最大吐出圧
力が増加してしまうおそれが生ずる。この現象を改善す
るには、バルブ４を押圧するスプリング１４を強くする
必要があり、強くすると電磁スピル弁１９の応答性が損
なわれる。そこで本発明は、電磁スピル弁のバルブが当
接面を離れようとするとき、バルブの先端平面部とプレ
ートの当接面との貼り付きをなくすとともに、ポンプ室
内からの燃料の流れに影響されない構成の電磁スピル弁
を提案し、最大吐出圧力を適正に調整できる高圧燃料ポ
ンプを提供することを課題とする。However, in the above configuration, although the sticking of the valve 4 is eliminated, the pressurized fuel in the pump chamber 6b passes through the through hole 17a when the pressure of the plunger 8 is started. Then, it hits the concave portion 4b of the flat end portion 4a of the valve 4 and acts in a direction to push up the valve 4 (close the electromagnetic spill valve). That is, the electromagnetic spill valve 19 closes earlier than the predetermined time, and as a result, the amount of fuel leakage decreases below the predetermined amount, and the maximum discharge pressure of the high-pressure fuel pump may increase. In order to improve this phenomenon, it is necessary to strengthen the spring 14 that presses the valve 4, and if it is, the response of the electromagnetic spill valve 19 is impaired. Therefore, the present invention eliminates sticking between the flat end portion of the valve and the contact surface of the plate when the valve of the electromagnetic spill valve is about to leave the contact surface, and is not affected by the flow of fuel from the pump chamber. It is an object of the present invention to propose an electromagnetic spill valve having a configuration and to provide a high-pressure fuel pump capable of appropriately adjusting the maximum discharge pressure.
【０００８】[0008]
【課題を解決するための手段】前記課題の解決を目的と
してなされた請求項１の発明は、ポンプ室内を往復移動
するプランジャと、吸入側通路および吐出側通路のそれ
ぞれに設けられたチェック弁とにより燃料ポンプを構成
するとともに、前記プランジャの昇圧工程の所定期間、
ポンプ室内の燃料を電磁スピル弁により漏洩させ、吐出
燃料の最大圧力を調整する高圧燃料ポンプにおいて、前
記電磁スピル弁のバルブの先端平面部、または前記先端
平面部が当接する当接面の何れか一方の当接面内に凹部
を設け、該凹部がバルブ当接時にバルブ室に連通するよ
うにするとともに、ポンプ室とバルブ室とを結ぶ複数の
連通孔を、バルブ当接部のバルブ当接面外に設けたこと
を特徴とする。According to a first aspect of the present invention, a plunger reciprocating in a pump chamber and check valves provided in a suction side passage and a discharge side passage are provided. A fuel pump, and a predetermined period of the pressure rising step of the plunger,
In a high-pressure fuel pump that leaks fuel in a pump chamber by an electromagnetic spill valve and adjusts the maximum pressure of the discharged fuel, any one of a flat end portion of the valve of the electromagnetic spill valve and a contact surface with which the flat end portion contacts. A concave portion is provided in one contact surface so that the concave portion communicates with the valve chamber at the time of valve contact, and a plurality of communication holes connecting the pump chamber and the valve chamber are formed in the valve contact portion of the valve contact portion. It is characterized by being provided out of plane.
【０００９】[0009]
【作用】上述のように、請求項１の発明においては、電
磁スピル弁のバルブの先端平面部、または前記先端平面
部が当接する当接面の何れか一方の当接面内に凹部を設
け、該凹部がバルブ当接時にバルブ室に連通するように
したので、バルブの先端平面部と当接面との当接面積、
すなわち、貼り付き面積が減少するので貼り付きが減少
する。また、バルブの先端平面部と当接面との隙間は、
凹部および連通溝により燃料で満たされているので、離
れる際、前記両面間に負圧が生じず、さらに貼り付き現
象が減少する。また、ポンプ室とバルブ室とを結ぶ複数
の連通孔を、バルブ当接部のバルブ当接面外に設けたの
で、バルブがポンプ室からの燃料の流れの影響を受ける
ことがない。As described above, according to the first aspect of the present invention, the concave portion is provided in one of the contact flat surfaces of the valve tip of the electromagnetic spill valve and the contact surface with which the tip flat portion contacts. Since the recess communicates with the valve chamber at the time of valve contact, the contact area between the flat end portion of the valve and the contact surface,
That is, the sticking area is reduced, so that sticking is reduced. Also, the gap between the flat end of the valve and the contact surface is
Since the fuel is filled with the concave portion and the communication groove, a negative pressure is not generated between the two surfaces when leaving, and the sticking phenomenon is further reduced. Further, since a plurality of communication holes connecting the pump chamber and the valve chamber are provided outside the valve contact surface of the valve contact portion, the valve is not affected by the flow of fuel from the pump chamber.
【００１０】[0010]
【発明の実施の形態】本発明の望ましい実施形態につい
て図面を参照して説明する。図１（ａ）は本発明の第１
の実施形態に係る高圧燃料ポンプの電磁スピル弁のバル
ブの側面図、図１（ｂ）はその下面図、図１（ｃ）はプ
レートの上面図である。図１において、バルブ１の先端
平面部１ａには凹部１ｂが形成され、凹部１ｂから外周
部に向かって複数（本実施形態では４個）の連通溝１ｃ
が刻設されている。連通溝１ｃはバルブ１がプレート２
に当接したとき、凹部１ｂとバルブ室１８ａ（図５参
照）とが連通するよう設けられている。ポンプ室６ｂ
（図５参照）とバルブ室１８ａとを連通する複数の連通
孔２ａは、プレート２のバルブ当接面２ｂ外に設けられ
ている。したがって、バルブ１およびプレート２の接触
部分は扇状の接触部１ｄ（本実施形態では４箇所）のみ
となる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1A shows a first embodiment of the present invention.
1B is a side view of a valve of an electromagnetic spill valve of the high-pressure fuel pump according to the embodiment, FIG. 1B is a bottom view thereof, and FIG. 1C is a top view of a plate. In FIG. 1, a concave portion 1b is formed in a front end flat portion 1a of the valve 1, and a plurality of (four in this embodiment) communication grooves 1c are formed from the concave portion 1b toward the outer peripheral portion.
Is engraved. The communication groove 1c has the valve 1 on the plate 2
The recess 1b and the valve chamber 18a (see FIG. 5) are provided so as to communicate with each other. Pump room 6b
A plurality of communication holes 2a for communicating between the valve chamber 18a (see FIG. 5) and the valve chamber 18a are provided outside the valve contact surface 2b of the plate 2. Therefore, the contact portion between the valve 1 and the plate 2 is only the fan-shaped contact portion 1d (four portions in this embodiment).
【００１１】図２（ａ）は本発明の第２の実施形態に係
る高圧燃料ポンプの電磁スピル弁のプレートの上面図、
図２（ｂ）はその断面Ａ−Ａ図、図２（ｃ）はバルブお
よびプレートの当接時の拡大縦断面図であり、矢印は負
圧の逃げる方向を示す。図２において、プレート３のバ
ルブ当接面３ｃ側には複数の連通溝３ａが刻設され複数
の連通孔３ｂ（本実施形態では４箇所）に連通し、バル
ブ４の先端平面部４ａには凹部４ｂのみが設けられてい
る。なお、連通孔３ｂは第１の実施形態と同様、プレー
ト３のバルブ当接面３ｃ外に設けられている。バルブ４
がプレート３に当接したとき、バルブ４の凹部４ｂがバ
ルブ室１８ａに連通するよう連通溝３ａが形成されてい
る。なお、連通溝３ａは必ずしも連通孔３ｂに連通させ
る必要はなく、当接時にバルブ４の凹部４ｂがバルブ室
１８ａに連通すればよく、連通溝３ａの数や形状も実施
形態だけに限定されるものではない。また、凹部４ｂは
プレート３側に設けても効果は同様であるので、加工性
を考慮してバルブ４またはプレート３の何れかに設けれ
ばよい。なお、プレート３に連通溝３ａ（凹部）を設け
た場合は、バルブ４の凹部４ｂは設けなくてもよい。FIG. 2A is a top view of a plate of an electromagnetic spill valve of a high-pressure fuel pump according to a second embodiment of the present invention,
FIG. 2B is a cross-sectional view taken along the line AA, and FIG. 2C is an enlarged vertical cross-sectional view when the valve and the plate are in contact with each other. An arrow indicates a direction in which the negative pressure escapes. In FIG. 2, a plurality of communication grooves 3 a are formed on the valve contact surface 3 c side of the plate 3 to communicate with a plurality of communication holes 3 b (four locations in this embodiment). Only the recess 4b is provided. The communication hole 3b is provided outside the valve contact surface 3c of the plate 3 as in the first embodiment. Valve 4
A communication groove 3a is formed so that the recess 4b of the valve 4 communicates with the valve chamber 18a when the abutment with the plate 3. The communication groove 3a does not necessarily need to be communicated with the communication hole 3b, and the recess 4b of the valve 4 only needs to communicate with the valve chamber 18a at the time of contact, and the number and shape of the communication groove 3a are limited only to the embodiment. Not something. The same effect can be obtained even if the concave portion 4b is provided on the plate 3 side. Therefore, the concave portion 4b may be provided on either the valve 4 or the plate 3 in consideration of workability. When the communication groove 3a (recess) is provided in the plate 3, the recess 4b of the valve 4 may not be provided.
【００１２】[0012]
【発明の効果】本発明は上述のように構成されているの
で以下の効果を奏する。すなわち、バルブの先端平面部
と当接面との貼り付き面積が減少するとともに、先端平
面部と当接面との隙間は凹部および連通溝により燃料で
満たされているので、両面間の貼り付き現象が減少す
る。また、ポンプ室とバルブ室とを結ぶ複数の連通路
は、プレートのバルブ当接面外に開口されているので、
バルブはポンプ室からの燃料の流れの影響を受けない。
したがって、電磁スピル弁の漏洩量が所定量に確保され
高圧燃料ポンプの最高吐出圧力を適正に調整することが
できる。The present invention has the following effects because it is configured as described above. That is, the sticking area between the flat end portion of the valve and the contact surface is reduced, and the gap between the flat end portion and the contact surface is filled with the fuel by the concave portion and the communication groove. The phenomenon is reduced. Also, since the plurality of communication paths connecting the pump chamber and the valve chamber are opened outside the valve contact surface of the plate,
The valve is not affected by the flow of fuel from the pump chamber.
Therefore, the leakage amount of the electromagnetic spill valve is secured to a predetermined amount, and the maximum discharge pressure of the high-pressure fuel pump can be appropriately adjusted.
【図１】図１（ａ）は本発明の第１の実施形態に係る高
圧燃料ポンプの電磁スピル弁のバルブの側面図である。
図１（ｂ）はバルブの下面図である。図１（ｃ）はプレ
ートの上面図である。FIG. 1 (a) is a side view of a valve of an electromagnetic spill valve of a high-pressure fuel pump according to a first embodiment of the present invention.
FIG. 1B is a bottom view of the valve. FIG. 1C is a top view of the plate.
【図２】図２（ａ）は本発明の第２の実施形態に係る高
圧燃料ポンプの電磁スピル弁のプレートの上面図であ
る。図２（ｂ）は断面Ａ−Ａである。図２（ｃ）はバル
ブおよびプレートの当接時の拡大縦断面図である。FIG. 2A is a top view of a plate of an electromagnetic spill valve of a high-pressure fuel pump according to a second embodiment of the present invention. FIG. 2B is a cross section AA. FIG. 2C is an enlarged vertical sectional view when the valve and the plate are in contact with each other.
【図３】従来の高圧燃料ポンプの概念図である。FIG. 3 is a conceptual diagram of a conventional high-pressure fuel pump.
【図４】従来の高圧燃料ポンプの縦断面図である。FIG. 4 is a longitudinal sectional view of a conventional high-pressure fuel pump.
【図５】従来の高圧燃料ポンプの電磁スピル弁の縦断面
図である。FIG. 5 is a longitudinal sectional view of a conventional electromagnetic spill valve of a high-pressure fuel pump.
【図６】図６（ａ）は従来技術の改良技術を示す電磁ス
ピル弁の縦断面図である。図６（ｂ）はバルブの側面図
である。図６（ｃ）はバルブの下面図である。図６
（ｄ）はプレートの上面図である。FIG. 6A is a longitudinal sectional view of an electromagnetic spill valve showing an improved technique of the prior art. FIG. 6B is a side view of the valve. FIG. 6C is a bottom view of the valve. FIG.
(D) is a top view of the plate.
１ バルブ １ａ 先端平面部 １ｂ 凹部 １ｃ 連通溝 ２ｂ バルブ当接面 ３ プレート ３ａ 連通溝 ３ｃ バルブ当接面 ４ バルブ ４ａ 先端平面部 ４ｂ 凹部 ６ｂ ポンプ室 ８ プランジャ ９ 吸入側通路 １０ 吸入側チェック弁 １１ 吐出側通路 １２ 吐出側チェック弁 １８ 電磁スピル弁 １８ａ バルブ室 ２０ 高圧燃料ポンプ DESCRIPTION OF SYMBOLS 1 Valve 1a Tip flat part 1b Depression 1c Communication groove 2b Valve contact surface 3 Plate 3a Communication groove 3c Valve contact surface 4 Valve 4a Tip flat part 4b Depression 6b Pump chamber 8 Plunger 9 Suction side passage 10 Suction side check valve 11 Discharge Side passage 12 Discharge side check valve 18 Electromagnetic spill valve 18a Valve chamber 20 High pressure fuel pump
Claims (1)
と、吸入側通路および吐出側通路のそれぞれに設けられ
たチェック弁とにより燃料ポンプを構成するとともに、
前記プランジャの昇圧工程の所定期間、ポンプ室内の燃
料を電磁スピル弁により漏洩させ、吐出燃料の最大圧力
を調整する高圧燃料ポンプにおいて、前記電磁スピル弁
のバルブの先端平面部、または前記先端平面部が当接す
る当接面の何れか一方の当接面内に凹部を設け、該凹部
がバルブ当接時にバルブ室に連通するようにするととも
に、ポンプ室とバルブ室とを結ぶ複数の連通孔を、バル
ブ当接部のバルブ当接面外に設けたことを特徴とする高
圧燃料ポンプ。A fuel pump is constituted by a plunger reciprocating in a pump chamber and check valves provided in each of a suction side passage and a discharge side passage.
In a high-pressure fuel pump in which fuel in a pump chamber is leaked by an electromagnetic spill valve and a maximum pressure of discharged fuel is adjusted during a predetermined period of the pressure increasing step of the plunger, the flat end portion of the valve of the electromagnetic spill valve or the flat end portion of the valve A recess is provided in any one of the contact surfaces with which the contact is made, so that the recess communicates with the valve chamber when the valve contacts, and a plurality of communication holes connecting the pump chamber and the valve chamber are formed. A high-pressure fuel pump provided outside the valve contact surface of the valve contact portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37677799A JP2001173540A (en) | 1999-12-17 | 1999-12-17 | High pressure fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37677799A JP2001173540A (en) | 1999-12-17 | 1999-12-17 | High pressure fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001173540A true JP2001173540A (en) | 2001-06-26 |
Family
ID=18507716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37677799A Pending JP2001173540A (en) | 1999-12-17 | 1999-12-17 | High pressure fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001173540A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7448592B2 (en) | 2004-02-27 | 2008-11-11 | Mitsubishi Heavy Industries, Ltd. | Poppet valve device and electronic controlled fuel injection apparatus equipped with the device |
| JP2010156266A (en) * | 2008-12-26 | 2010-07-15 | Denso Corp | High-pressure pump |
| JP2010169080A (en) * | 2008-12-26 | 2010-08-05 | Denso Corp | High pressure pump |
| JP2012087776A (en) * | 2010-09-22 | 2012-05-10 | Hitachi Automotive Systems Ltd | Variable displacement vane pump |
| JP2013019419A (en) * | 2012-10-31 | 2013-01-31 | Denso Corp | High-pressure pump |
| JP2013224673A (en) * | 2013-08-07 | 2013-10-31 | Denso Corp | High-pressure pump |
| JP2013224674A (en) * | 2013-08-07 | 2013-10-31 | Denso Corp | High-pressure pump |
| JP2015083838A (en) * | 2014-12-25 | 2015-04-30 | 日立オートモティブシステムズ株式会社 | High-pressure fuel supply pump with electromagnetically driven inlet valve |
| JP2016029283A (en) * | 2015-12-03 | 2016-03-03 | 株式会社デンソー | High pressure pump |
-
1999
- 1999-12-17 JP JP37677799A patent/JP2001173540A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7467781B2 (en) | 2004-02-27 | 2008-12-23 | Mitsubishi Heavy Industries, Ltd. | Poppet valve device and electronic controlled fuel injection apparatus equipped with the device |
| US7597305B2 (en) | 2004-02-27 | 2009-10-06 | Mitsubishi Heavy Industries Ltd. | Poppet valve device and electronic controlled fuel injection apparatus equipped with the device |
| US7448592B2 (en) | 2004-02-27 | 2008-11-11 | Mitsubishi Heavy Industries, Ltd. | Poppet valve device and electronic controlled fuel injection apparatus equipped with the device |
| US8257067B2 (en) | 2008-12-26 | 2012-09-04 | Denso Corporation | High pressure pump |
| JP2010156266A (en) * | 2008-12-26 | 2010-07-15 | Denso Corp | High-pressure pump |
| JP2010169080A (en) * | 2008-12-26 | 2010-08-05 | Denso Corp | High pressure pump |
| JP4678064B2 (en) * | 2008-12-26 | 2011-04-27 | 株式会社デンソー | High pressure pump |
| JP2012087776A (en) * | 2010-09-22 | 2012-05-10 | Hitachi Automotive Systems Ltd | Variable displacement vane pump |
| JP2013019419A (en) * | 2012-10-31 | 2013-01-31 | Denso Corp | High-pressure pump |
| JP2013224673A (en) * | 2013-08-07 | 2013-10-31 | Denso Corp | High-pressure pump |
| JP2013224674A (en) * | 2013-08-07 | 2013-10-31 | Denso Corp | High-pressure pump |
| JP2015083838A (en) * | 2014-12-25 | 2015-04-30 | 日立オートモティブシステムズ株式会社 | High-pressure fuel supply pump with electromagnetically driven inlet valve |
| JP2016029283A (en) * | 2015-12-03 | 2016-03-03 | 株式会社デンソー | High pressure pump |
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