JP3999789B2 - 燃料噴射弁 - Google Patents
燃料噴射弁 Download PDFInfo
- Publication number
- JP3999789B2 JP3999789B2 JP2005071652A JP2005071652A JP3999789B2 JP 3999789 B2 JP3999789 B2 JP 3999789B2 JP 2005071652 A JP2005071652 A JP 2005071652A JP 2005071652 A JP2005071652 A JP 2005071652A JP 3999789 B2 JP3999789 B2 JP 3999789B2
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- JP
- Japan
- Prior art keywords
- fuel injection
- fuel
- valve
- hole
- notch
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1853—Orifice plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
- F02M35/108—Intake manifolds with primary and secondary intake passages
- F02M35/1085—Intake manifolds with primary and secondary intake passages the combustion chamber having multiple intake valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1813—Discharge orifices having different orientations with respect to valve member direction of movement, e.g. orientations being such that fuel jets emerging from discharge orifices collide with each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
- F02M51/0675—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
- F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
また第1切欠き部42aの開口面積をS1,第2切欠き部42bの開口面積をS2,弁座8及び弁体18間の開弁面積をS3,第1及び第2組全部の燃料噴孔11,11…の総開口面積をS4,弁座8の有効直径をD1,弁体18の開弁ストロークをtとしたとき,これらは次式が成立するように設定される。
S3=D1×t・・・・・・・・・・・・(3)
また弁座8の有効直径をD1,弁孔7の直径をD2としたとき,これらは次式が成立するように設定される。
また拡散室39の高さをH1,燃料誘導部材40の厚みをH2としたとき,これらは次式が成立するように設定される。
次に,この第1実施例の作用について説明する。
G1,G2・・・燃料噴孔の組
R・・・・・燃料噴孔の組G1,G2の対称軸線
Y・・・・・弁座部材の軸線
3・・・・・弁座部材
7・・・・・弁孔
8・・・・・弁座
10・・・・インジェクタプレート
11・・・・燃料噴孔
11(A)・・・中央部の燃料噴孔
11(B)・・・外側部の燃料噴孔
18・・・・弁体
39・・・・拡散室
40・・・・燃料誘導部材
41・・・・燃料誘導部材の閉鎖部
42・・・・燃料誘導部材
42a・・・燃料誘導部材の第1切欠き部
42b・・・燃料誘導部材の第2切欠き部
Claims (6)
- 円錐状の弁座(8)及びこの弁座(8)の中心部を貫通する弁孔(7)を有する弁座部材(3)と,弁座(8)と協働して弁孔(7)を開閉する弁体(18)と,弁孔(7)から半径方向外方にずれて配置される複数の燃料噴孔(11)を有して弁座部材(3)に接合されるインジェクタプレート(10)とを備えてなり,前記弁座部材(3)及びインジェクタプレート(10)間には前記弁孔(7)及び燃料噴孔(11)間を連通する拡散室(39)を設けた燃料噴射弁において,
前記弁孔(7)に臨む燃料誘導部材(40)を前記インジェクタプレート(10)に連設すると共に,前記弁座部材(3)及びインジェクタプレート(10)間に,前記燃料誘導部材(40)の外周面が臨む,前記弁孔(7)より大径で前記燃料噴孔(11)の内端が開口する環状の前記拡散室(39)を形成し,前記燃料誘導部材(40)の外周部には,前記弁孔(7)を部分的に閉鎖する複数の閉鎖部(41)と,これら閉鎖部(41)間にあって前記弁孔(7)及び前記拡散室(39)間を連通する複数の切欠き部(42a,42b)とを形成し,前記複数の燃料噴孔(11)を,前記インジェクタプレート(10)の一直径線(R)に関して対称的に配置される二組(G1,G2)に分ける一方,前記複数の切欠き部(42a,42b)を,前記各組(G1,G2)の中央部の複数の燃料噴孔(11(A))が並ぶ領域に対応した第1切欠き部(42a)と,前記直径線(R)上に位置して互いに反対方向を向く第2切欠き部(42b)とに分け,この第2切欠き部(42b)にそれぞれ隣接する前記閉鎖部(41)に対応して各組(G1,G2)の外側部の燃料噴孔(11(B))を配置し,前記第2切欠き部(42b)から前記拡散室(39)の内周壁に衝突して前記外側部の燃料噴孔(11(B))側に向かう燃料流量を,前記第1切欠き部(42a)から前記外側部の燃料噴孔(11(B))側に向かう燃料流量より多く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,
前記外側部の燃料噴孔(11(B))を,前記各閉鎖部(41)に対応して一個設けることを特徴とする燃料噴射弁。 - 請求項2記載の燃料噴射弁において,
前記第1切欠き部(42a)から前記外側部の燃料噴孔(11(B))までの距離と,前記第2切欠き部(42b)から前記外側部の燃料噴孔(11(B))までの距離とを略等し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,
前記複数の燃料噴孔(11)を,前記弁座部材(3)の軸線(Y)周りの同一仮想円(C1)上に配置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,
前記複数の燃料噴孔(11)を,前記弁座部材(3)の軸線(Y)周りの複数の同心仮想円(C1,C4)上に分散配置したことを特徴とする燃料噴射弁。 - 請求項1〜5の何れかに記載の燃料噴射弁において,
前記外側部の燃料噴孔(11(B))を,前記閉鎖部(41)の外周面と前記拡散室(39)の内周壁との間の中点より該内周壁寄りに配置したことを特徴とする燃料噴射弁。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005071652A JP3999789B2 (ja) | 2005-03-14 | 2005-03-14 | 燃料噴射弁 |
PCT/JP2006/304314 WO2006095706A1 (ja) | 2005-03-09 | 2006-03-07 | 燃料噴射弁 |
EP06728683.1A EP1857665B1 (en) | 2005-03-09 | 2006-03-07 | Fuel injection valve |
US11/885,987 US7637442B2 (en) | 2005-03-09 | 2006-03-07 | Fuel injection valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005071652A JP3999789B2 (ja) | 2005-03-14 | 2005-03-14 | 燃料噴射弁 |
Publications (2)
Publication Number | Publication Date |
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JP2006250127A JP2006250127A (ja) | 2006-09-21 |
JP3999789B2 true JP3999789B2 (ja) | 2007-10-31 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005071652A Active JP3999789B2 (ja) | 2005-03-09 | 2005-03-14 | 燃料噴射弁 |
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JP (1) | JP3999789B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008291738A (ja) * | 2007-05-24 | 2008-12-04 | Denso Corp | 燃料噴射弁 |
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- 2005-03-14 JP JP2005071652A patent/JP3999789B2/ja active Active
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JP2006250127A (ja) | 2006-09-21 |
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