JP3993574B2 - 電磁式燃料噴射弁 - Google Patents
電磁式燃料噴射弁 Download PDFInfo
- Publication number
- JP3993574B2 JP3993574B2 JP2004065983A JP2004065983A JP3993574B2 JP 3993574 B2 JP3993574 B2 JP 3993574B2 JP 2004065983 A JP2004065983 A JP 2004065983A JP 2004065983 A JP2004065983 A JP 2004065983A JP 3993574 B2 JP3993574 B2 JP 3993574B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- guide hole
- journal
- sliding surface
- 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 - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 36
- 238000002347 injection Methods 0.000 title claims description 14
- 239000007924 injection Substances 0.000 title claims description 14
- 239000002184 metal Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Description
9・・・磁性円筒体
10・・・弁座部材
13・・・弁座
14・・・前部ガイド孔
15・・・後部ガイド孔
18・・・可動コア
19・・・弁体
19a・・・弁部
19b・・・弁軸部
20・・・弁組立体
21・・・第1ジャーナル部
22・・・第2ジャーナル部
23・・・縦孔
24a,24b・・・横孔
25・・・燃料通路
28・・・固定コア
45・・・摺動面
45a・・・面取り部
C・・・球面中心
P・・・平面
S・・・仮想球面
Claims (2)
- 磁性金属により形成される磁性円筒体(9)と、該磁性円筒体(9)の前端に液密に結合される弁座部材(10)とにより構成され、前端部にテーパ状の弁座(13)を有する弁ハウジング(8)の後端に固定コア(28)が連設されており、
前記弁座部材(10)には、前記弁座(13)の後端大径部に連なって該弁座(13)と同軸に前部ガイド孔(14)が設けられ、前記磁性円筒体(9)には、前記前部ガイド孔(14)に同軸に連なって該前部ガイド孔(14)よりも大径に形成される後部ガイド孔(15)が設けられていて、
前記弁座(13)に着座可能で、弁軸部(19b)の軸線上に球面中心(C)を有する仮想球面(S)に沿う半球状に形成される弁部(19a)、ならびに該弁部(19a)に連なる弁軸部(19b)を有する弁体(19)と、前記固定コア(28)に対向する可動コア(18)とが一体に連なって成る弁組立体(20)が、前記弁ハウジング(8)に収容されている電磁式燃料噴射弁において、
前記弁組立体(20)には、前記前部ガイド孔(14)に摺動可能に支承される摺動面(45)を有し、該摺動面(45)の半径が前記仮想球面(S)の半径よりも小さく設定されるとともに、前記球面中心(C)を通り前記弁軸部(19b)の軸線に直交する平面(P)が、前記摺動面(45)の幅内に位置するように配置される第1ジャーナル部(21)と、前記可動コア(18)に設けられ、前記後部ガイド孔(15)に摺動可能に支承される第2ジャーナル部(22)と、前記可動コア(18)の後端を開放するとともに前記平面(P)を越える位置で前端を閉じる、前記弁軸部(19b)と同軸に延びる縦孔(23)とが設けられており、
前記弁組立体(20)が、前記弁部(19a)が前記弁座(13)に着座した状態において、前記第2ジャーナル部(22)が前記後部ガイド孔(15)に接触する方向に前記球面中心(C)を中心として傾斜して、前記弁部(19a)を前記弁座(13)に着座させる側にばね付勢されて前記弁ハウジング(8)に収容されていて、
前記弁座(13)に前記弁部(19a)が着座したときのシール直径よりも前記第1ジャーナル部(21)と前記弁部(19a)との間の前記弁軸部(19b)の直径が小さく設定され、
前記球面中心(C)を通る前記平面(P)よりも前記弁部(19a)側において前記縦孔(23)に通じ前記弁軸部(19b)に開口する複数の横孔(24a)が設けられていることを特徴とする電磁式燃料噴射弁。 - 前記摺動面(45)の周方向複数箇所に、燃料の流通を許容する面取り部(45a)が形成されており、
前記可動コア(18)には、前記縦孔(23)に通じる横孔(24b)が設けられていることを特徴とする請求項1記載の電磁式燃料噴射弁。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004065983A JP3993574B2 (ja) | 2004-03-09 | 2004-03-09 | 電磁式燃料噴射弁 |
BRPI0508520-9A BRPI0508520B1 (pt) | 2004-03-09 | 2005-02-25 | Electromagnetic fuel injection valve |
DE602005009932T DE602005009932D1 (de) | 2004-03-09 | 2005-02-25 | Elektromagnetisches kraftstoffeinspritzventil |
PCT/JP2005/003127 WO2005085627A1 (ja) | 2004-03-09 | 2005-02-25 | 電磁式燃料噴射弁 |
EP05719528A EP1724463B1 (en) | 2004-03-09 | 2005-02-25 | Electromagnetic fuel injection valve |
US10/591,904 US7614604B2 (en) | 2004-03-09 | 2005-02-25 | Electromagnetic fuel injection valve |
MYPI20050953A MY137465A (en) | 2004-03-09 | 2005-03-08 | Electromagnetic fuel injection valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004065983A JP3993574B2 (ja) | 2004-03-09 | 2004-03-09 | 電磁式燃料噴射弁 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005256638A JP2005256638A (ja) | 2005-09-22 |
JP3993574B2 true JP3993574B2 (ja) | 2007-10-17 |
Family
ID=35082630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004065983A Expired - Lifetime JP3993574B2 (ja) | 2004-03-09 | 2004-03-09 | 電磁式燃料噴射弁 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3993574B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5516140B2 (ja) * | 2010-06-29 | 2014-06-11 | 株式会社デンソー | 燃料噴射弁 |
JP2014152695A (ja) * | 2013-02-08 | 2014-08-25 | Hitachi Automotive Systems Ltd | 燃料噴射弁 |
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2004
- 2004-03-09 JP JP2004065983A patent/JP3993574B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
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JP2005256638A (ja) | 2005-09-22 |
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