JP4288233B2 - 燃料噴射用インジェクタ - Google Patents
燃料噴射用インジェクタ Download PDFInfo
- Publication number
- JP4288233B2 JP4288233B2 JP2004511686A JP2004511686A JP4288233B2 JP 4288233 B2 JP4288233 B2 JP 4288233B2 JP 2004511686 A JP2004511686 A JP 2004511686A JP 2004511686 A JP2004511686 A JP 2004511686A JP 4288233 B2 JP4288233 B2 JP 4288233B2
- Authority
- JP
- Japan
- Prior art keywords
- injection hole
- diameter
- injector
- injector according
- injection
- 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 - Fee Related
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Classifications
-
- 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
- F02M61/1846—Dimensional characteristics of discharge orifices
-
- 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
- F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/007—Cleaning
- F02M65/008—Cleaning of injectors only
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
ドイツ連邦共和国特許出願公開第19854828号明細書に基づき公知の燃焼室に燃料を噴射するためのインジェクタは、流入開口及び流出開口を備えた少なくとも1つの噴射孔を有している。この噴射孔の横断面は外側に向かって弁座面とは反対の側の方向に、つまり内燃機関の燃焼室に向かって広がっているので、既に噴射孔流入部においてキャビテーション又は乱流が形成可能であり、これにより、燃料噴流はノズルの極めて近傍で減衰する。
Claims (9)
- 流入開口(2)及び流出開口(3)を備えた少なくとも1つの噴射孔(1)を介して燃焼室(10)に燃料を噴射するためのインジェクタであって、運転中に流出開口(3)において発生する堆積物(9)を除去するために、噴射孔(1)が、流出開口(3)において意図的にキャビテーションを形成するための装置を有している形式のものにおいて、
キャビテーションを形成するために、噴射孔(1)が、断面図で見て樽状の形状を有しており、該形状が、通流方向で見て最初は広がり、次いで再び先細になっていることを特徴とする、燃料噴射用インジェクタ。 - 樽状の噴射孔(1)の流入横断面が、流出横断面よりも大きいか又は等しい、請求項1記載のインジェクタ。
- 噴射孔(1)が対称的な樽形を有している、請求項1又は2記載のインジェクタ。
- 流入横断面及び流出横断面が円形であり且つ入口直径(DEin)が出口直径(DAus)に等しい、請求項3記載のインジェクタ。
- 噴射孔(1)の最大直径(Dmax)に対する入口直径(DEin)の比が0.9〜0.95、殊に0.91である、請求項1から4までのいずれか1項記載のインジェクタ。
- 入口直径(DEin)が、最大直径(Dmax)よりも5μm〜25μm、特に10μmだけ小さい、請求項1から4までのいずれか1項記載のインジェクタ。
- 出口直径(DAus)に対する入口直径(DEin)の比が1〜1.1、殊に1.05である、請求項2から6までのいずれか1項記載のインジェクタ。
- 中間直径に対する噴射孔長さ(L)の比が6.5であるか又は6.5未満であり、前記中間直径が、噴射孔(1)の全長(L)にわたる平均的な直径である、請求項1から7までのいずれか1項記載のインジェクタ。
- 流出開口(3)に鋭利な縁部(5)が形成されており、流入開口(2)の縁部(4)に規定された丸み(R)が形成されている、請求項1から8までのいずれか1項記載のインジェクタ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002125683 DE10225683A1 (de) | 2002-06-10 | 2002-06-10 | Injektor zum Einspritzen von Kraftstoff |
PCT/DE2003/001879 WO2003104640A1 (de) | 2002-06-10 | 2003-06-03 | Injektor zum einspritzen von kraftstoff |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005534844A JP2005534844A (ja) | 2005-11-17 |
JP4288233B2 true JP4288233B2 (ja) | 2009-07-01 |
Family
ID=29718925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004511686A Expired - Fee Related JP4288233B2 (ja) | 2002-06-10 | 2003-06-03 | 燃料噴射用インジェクタ |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1511934B1 (ja) |
JP (1) | JP4288233B2 (ja) |
DE (2) | DE10225683A1 (ja) |
WO (1) | WO2003104640A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2013470B1 (de) * | 2006-08-29 | 2010-10-06 | Continental Automotive GmbH | Verfahren zur reduzierung von ablagerungen innerhalb eines spritzlochs einer kraftstoffeinspritzvorrichtung |
DE102008055069A1 (de) * | 2008-12-22 | 2010-07-01 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE102009009796B3 (de) * | 2009-02-20 | 2010-10-07 | L'orange Gmbh | Verfahren zur Diagnose und/oder Steuerung von Brennkraftmaschinen, insbesondere Diesel-Brennkraftmaschinen |
JP5392026B2 (ja) * | 2009-11-24 | 2014-01-22 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
JP5830891B2 (ja) * | 2011-03-25 | 2015-12-09 | トヨタ自動車株式会社 | 燃料噴射弁 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2921455A1 (de) * | 1979-05-26 | 1980-11-27 | Daimler Benz Ag | Kraftstoffeinspritzventil fuer luftverdichtende einspritzbrennkraftmaschinen |
DE19854828A1 (de) * | 1998-11-27 | 2000-05-31 | Bosch Gmbh Robert | Kraftstoffeinspritzdüse für selbstzündende Brennkraftmaschinen |
DE10116714A1 (de) * | 2001-04-04 | 2002-10-10 | Volkswagen Ag | Kraftstoffeinspritzventil für Brennkraftmaschinen, vorzugsweise für hohe Strahlgeschwindigkeiten |
-
2002
- 2002-06-10 DE DE2002125683 patent/DE10225683A1/de not_active Ceased
-
2003
- 2003-06-03 JP JP2004511686A patent/JP4288233B2/ja not_active Expired - Fee Related
- 2003-06-03 EP EP03756968A patent/EP1511934B1/de not_active Expired - Fee Related
- 2003-06-03 WO PCT/DE2003/001879 patent/WO2003104640A1/de active IP Right Grant
- 2003-06-03 DE DE50301874T patent/DE50301874D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO2003104640A1 (de) | 2003-12-18 |
DE10225683A1 (de) | 2004-01-08 |
EP1511934A1 (de) | 2005-03-09 |
EP1511934B1 (de) | 2005-12-07 |
DE50301874D1 (de) | 2006-01-12 |
JP2005534844A (ja) | 2005-11-17 |
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