JP3999769B2 - 電磁式燃料噴射弁 - Google Patents
電磁式燃料噴射弁 Download PDFInfo
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- JP3999769B2 JP3999769B2 JP2004191179A JP2004191179A JP3999769B2 JP 3999769 B2 JP3999769 B2 JP 3999769B2 JP 2004191179 A JP2004191179 A JP 2004191179A JP 2004191179 A JP2004191179 A JP 2004191179A JP 3999769 B2 JP3999769 B2 JP 3999769B2
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- hole
- press
- diameter
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17・・・弁組立体
18・・・可動コア
20・・・弁体
22・・・固定コア
23・・・戻しばね
24・・・コイル組立体
27・・・ばね受け部材
27a・・・スリット
27b・・・テーパ部
29・・・ボビン
30・・・コイル
35・・・燃料通路
51・・・小径孔
52・・・大径孔
53・・・テーパ孔
51a・・・圧入孔部
51b・・・同軸調整孔部
51c・・・連絡孔部
51ca,51cc・・・テーパ部分
Claims (3)
- ボビン(29)にコイル(30)が巻装されて成るコイル組立体(24)で囲繞される円筒状の固定コア(22)に、小径孔(51)と、該小径孔(51)よりも大径にして小径孔(51)の後方に配置される大径孔(52)と、小径孔(51)および大径孔(52)間を結ぶテーパ孔(53)とが同軸に設けられ、軸方向に延びる一条のスリット(27a)を有して横断面形状が略C形に形成されるとともに軸方向両端部外周にテーパ部(27b)がそれぞれ設けられる円筒状のばね受け部材(27)が、軸方向位置を調節可能として前記小径孔(51)に圧入され、前端部に弁座(13)を有する弁ハウジング(8)の後端部が前記固定コア(22)に同軸に結合され、前記弁座(13)に着座可能として弁ハウジング(8)に収容される弁体(20)ならびに前記固定コア(22)の前端に後端が対向する可動コア(18)が同軸に結合されて成る弁組立体(17)と前記ばね受け部材(27)との間に戻しばね(23)が縮設され、前記固定コア(22)およびばね受け部材(27)内には、固定コア(22)の後端側から流入する燃料を流通させる燃料通路(35)が形成される電磁式燃料噴射弁において、前記固定コア(22)の小径孔(51)は、前記ばね受け部材(27)を圧入するのに適合した内径の圧入孔部(51a)と、該圧入孔部(51a)よりも後方に間隔をあけて圧入孔部(51a)と同軸に配置されるとともに圧入孔部(51a)よりも大径に形成される同軸調整孔部(51b)と、前記圧入孔部(51a)側に進むにつれて小径となるとともに軸線に対する傾斜角度を前記ばね受け部材(27)が有する前記テーパ部(27b)の軸線に対する傾斜角度よりも小さくしたテーパ部分(51ca,51cc)を少なくとも一部に有して前記圧入孔部(51a)および前記同軸調整孔部(51b)間を滑らかに結ぶ連絡孔部(51c)とから成ることを特徴とする電磁式燃料噴射弁。
- 前記連絡孔部(51c)は、前記同軸調整孔部(51b)から前方に進むにつれて小径となるようにして同軸調整孔部(51b)の前端に大径端が同軸に連なる後方テーパ部分(51ca)を、前記同軸調整孔部(51b)側の後部に有するように形成されることを特徴とする請求項1記載の電磁式燃料噴射弁。
- 前記ばね受け部材(27)の前端部が、その後端を前記後方テーパ部分(51ca)に対応する位置に配置するようにして前記圧入孔部(51a)に圧入されることを特徴とする請求項2記載の電磁式燃料噴射弁。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004191179A JP3999769B2 (ja) | 2004-06-29 | 2004-06-29 | 電磁式燃料噴射弁 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004191179A JP3999769B2 (ja) | 2004-06-29 | 2004-06-29 | 電磁式燃料噴射弁 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006009754A JP2006009754A (ja) | 2006-01-12 |
JP3999769B2 true JP3999769B2 (ja) | 2007-10-31 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004191179A Active JP3999769B2 (ja) | 2004-06-29 | 2004-06-29 | 電磁式燃料噴射弁 |
Country Status (1)
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JP (1) | JP3999769B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008202591A (ja) * | 2007-01-25 | 2008-09-04 | Denso Corp | コモンレール |
US7603985B2 (en) | 2007-01-25 | 2009-10-20 | Denso Corporation | Common rail |
JP5924764B2 (ja) * | 2012-02-13 | 2016-05-25 | 株式会社ケーヒン | 燃料噴射弁 |
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2004
- 2004-06-29 JP JP2004191179A patent/JP3999769B2/ja active Active
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JP2006009754A (ja) | 2006-01-12 |
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