JP4332124B2 - 燃料噴射弁 - Google Patents
燃料噴射弁 Download PDFInfo
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- JP4332124B2 JP4332124B2 JP2005018197A JP2005018197A JP4332124B2 JP 4332124 B2 JP4332124 B2 JP 4332124B2 JP 2005018197 A JP2005018197 A JP 2005018197A JP 2005018197 A JP2005018197 A JP 2005018197A JP 4332124 B2 JP4332124 B2 JP 4332124B2
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- fuel injection
- valve
- valve seat
- nozzle
- fuel
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- 239000000446 fuel Substances 0.000 title claims description 170
- 238000002347 injection Methods 0.000 title claims description 102
- 239000007924 injection Substances 0.000 title claims description 102
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 description 12
- 238000000889 atomisation Methods 0.000 description 8
- 230000035515 penetration Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 6
- 239000011493 spray foam Substances 0.000 description 6
- 230000004043 responsiveness Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000257465 Echinoidea Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
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- Fuel-Injection Apparatus (AREA)
Description
α>β・・・・・・・・・・・(2)
10°≦θ≦30°・・・・・(3)
但し,θ=α−β
また弁座8の有効直径をD1,環状配列されてノズル10の内端面10aに開口する複数の燃料噴孔11,11…のピッチ円直径をD2としたとき,次式が成立するように,弁座8及び燃料噴孔11,11…は相互に近接配置される。
次に,この実施例の作用について説明する。
8・・・・・弁座
10・・・・ノズル
10a・・・ノズルの内端面
11・・・・燃料噴孔
16・・・・弁部
16a・・・弁部の環状封止面
16b・・・弁部の先端面
18・・・・弁体
25・・・・円錐状のスペース
I・・・・・燃料噴射弁
L・・・・・弁座を構成する円錐面の母線の延長線
S・・・・・燃料の主流
α・・・・・弁座を構成する円錐面の円錐角
β・・・・・ノズルの内端面を構成する円錐面の円錐角
Claims (4)
- 燃料噴射弁(I)の前方に向かって小径となる円錐面で構成されていて,弁体(18)が開閉可能に着座する環状の弁座(8)を有する弁座部材(3)に,前記弁座(8)の下流側に位置し,その弁座(8)の中心線(Y)周りに配置される複数の燃料噴孔(11)を有するノズル(10)を連設すると共に,そのノズル(10)の各燃料噴孔(11)を,前記弁体(18)の開弁時,前記弁座(8)を通過した燃料の主流(S)が各燃料噴孔(11)の内面に直接衝突するように配置した燃料噴射弁であって,
前記ノズル(10)を前記弁座部材(3)と同一素材で一体に形成すると共に,そのノズル(10)の内端面(10a)を,燃料噴射弁(I)の前方に向かって小径となる円錐面で構成し,その内端面(10a)の円錐角(α)を,前記弁座(8)の円錐角(β)よりも大きく設定して,前記弁座(8)の母線の延長線(L)が前記ノズル(10)の内端面(10a)に開口する前記各燃料噴孔(11)の内面と交差するように,それら各燃料噴孔(11)を配置したことを特徴とする燃料噴射弁。 - 請求項1記載の燃料噴射弁において,
前記弁体(18)は,凸状球面の一部で構成される環状封止面(16a)と,その環状封止面(16a)の先端側の,その環状封止面(16a)の接線を母線とする円錐面で形成される先端面(16b)とによって構成される弁部(16)を有していて,その弁部(16)が前記ノズル(10)の内端面(10a)に対向して,その間に円錐状のスペース(25)を形成するように配設されていることを特徴とする燃料噴射弁。 - 請求項1又は2記載の燃料噴射弁において,
前記ノズル(10)の内端面(10a)の円錐角(α)を,前記弁座(8)の円錐角(β)よりも10〜30°大きく設定したことを特徴とする燃料噴射弁。 - 請求項1〜3の何れかに記載の燃料噴射弁において,
前記弁座(8)の有効直径をD1,環状配列されて前記ノズル(10)の内端面(10a)に開口する前記複数の燃料噴孔(11)のピッチ円直径をD2としたとき,D1/D2≦1.5となるように,それら弁座(8)及び燃料噴孔(11)を相互に近接配置したことを特徴とする燃料噴射弁。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005018197A JP4332124B2 (ja) | 2005-01-26 | 2005-01-26 | 燃料噴射弁 |
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JP2005018197A JP4332124B2 (ja) | 2005-01-26 | 2005-01-26 | 燃料噴射弁 |
Publications (2)
Publication Number | Publication Date |
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JP2006207419A JP2006207419A (ja) | 2006-08-10 |
JP4332124B2 true JP4332124B2 (ja) | 2009-09-16 |
Family
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Family Applications (1)
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JP2005018197A Active JP4332124B2 (ja) | 2005-01-26 | 2005-01-26 | 燃料噴射弁 |
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JP (1) | JP4332124B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106232981A (zh) * | 2014-06-16 | 2016-12-14 | 株式会社电装 | 燃料喷射阀 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100933407B1 (ko) | 2007-03-27 | 2009-12-24 | 미쓰비시덴키 가부시키가이샤 | 연료 분사 밸브 |
CN101545438B (zh) * | 2008-03-27 | 2012-07-04 | 株式会社电装 | 喷射器 |
JP4985661B2 (ja) * | 2008-03-27 | 2012-07-25 | 株式会社デンソー | 燃料噴射弁 |
JP5312148B2 (ja) * | 2009-03-30 | 2013-10-09 | 株式会社ケーヒン | 燃料噴射弁 |
-
2005
- 2005-01-26 JP JP2005018197A patent/JP4332124B2/ja active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106232981A (zh) * | 2014-06-16 | 2016-12-14 | 株式会社电装 | 燃料喷射阀 |
CN106232981B (zh) * | 2014-06-16 | 2019-03-15 | 株式会社电装 | 燃料喷射阀 |
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JP2006207419A (ja) | 2006-08-10 |
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