EP1509693B1 - Soupape d'injection de carburant pour moteurs a combustion interne - Google Patents
Soupape d'injection de carburant pour moteurs a combustion interne Download PDFInfo
- Publication number
- EP1509693B1 EP1509693B1 EP03740006A EP03740006A EP1509693B1 EP 1509693 B1 EP1509693 B1 EP 1509693B1 EP 03740006 A EP03740006 A EP 03740006A EP 03740006 A EP03740006 A EP 03740006A EP 1509693 B1 EP1509693 B1 EP 1509693B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve seat
- fuel injection
- annular groove
- valve needle
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 52
- 239000007924 injection Substances 0.000 title claims abstract description 52
- 239000000446 fuel Substances 0.000 title claims abstract description 49
- 238000002485 combustion reaction Methods 0.000 title claims description 21
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 230000007704 transition Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
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
- F02M61/1873—Valve seats or member ends having circumferential grooves or ridges, e.g. toroidal
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/042—The valves being provided 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
- 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
-
- 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
- F02M61/1866—Valve seats or member ends having multiple cones
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Claims (9)
- Injecteur de carburant pour moteurs à combustion interne, comprenant un corps de soupape (1) dans lequel une aiguille de soupape (5) d'un axe longitudinal (15) est mobile le long d'un alésage (3), un siège de soupape conique (11) à l'extrémité de l'alésage (3) située du côté de la chambre de combustion, et une chambre de pression (19) pouvant être remplie de carburant entre une partie de l'aiguille de soupape (5) et la paroi de l'alésage (3) et qui s'étend jusqu'au siège de soupape (11), l'injecteur comprenant également une surface d'étanchéité de soupape (7) formée sur l'aiguille de soupape (5) et qui, en coopérant avec le siège de soupape (11) pour commander au moins un orifice d'injection partant du siège de soupape (11), comporte une rainure annulaire (35) dont les bords aval servent d'arête d'étanchéité (38) s'étendant dans le plan radial de l'aiguille de soupape (5),
la rainure annulaire (35) étant en liaison hydraulique constante avec la chambre de pression (19) alors que la surface d'étanchéité de soupape (7) comprend une première surface conique (30) et une deuxième surface conique (32) en aval de la première, entre lesquelles s'étend la rainure annulaire (35),
caractérisé en ce que
l'angle d'ouverture de la première surface conique (30) est inférieur à l'angle d'ouverture du siège de soupape conique (11) et l'angle d'ouverture de la deuxième surface conique (32) est supérieur à celui-ci. - Injecteur de carburant selon la revendication 1,
caractérisé en ce que
la rainure annulaire (35) est adjacente à la première surface conique (30) et à la deuxième surface conique (32). - Injecteur de carburant selon la revendication 1,
caractérisé en ce que
la différence d'angle (δ2) entre la deuxième surface conique (32) et le siège de soupape (11) est inférieure à la différence d'angle (δ1) entre la première surface conique (30) et le siège de soupape (11). - Injecteur de carburant selon la revendication 1,
caractérisé en ce que
la deuxième surface conique (32) vient d'abord en appui contre le siège de soupape (11) lors du mouvement de fermeture de l'aiguille de soupape (5) sur le siège de soupape (11), et ce n'est qu'après déformation de l'aiguille de soupape (5) et/ou du corps de soupape (11) que la première surface conique (30) vient aussi en appui. - Injecteur de carburant selon la revendication 1,
caractérisé en ce que
la liaison hydraulique entre la rainure annulaire (35) et la chambre de pression (19) est réalisée par au moins un alésage de liaison (40) pratiqué dans l'aiguille de soupape (5). - Injecteur de carburant selon la revendication 5,
caractérisé en ce que
l'alésage de liaison (40) est un alésage transversal (44). - Injecteur de carburant selon la revendication 5 ou 6,
caractérisé en ce que
l'alésage de liaison (40) relie la rainure annulaire (35) avec la tige (205) de l'aiguille de soupape (5). - Injecteur de carburant selon la revendication 1,
caractérisé en ce que
la liaison hydraulique entre la rainure annulaire (35) et la chambre de pression (19) est réalisée par au moins un évidement formé dans la première surface conique (30). - Injecteur de carburant selon la revendication 1,
caractérisé en ce que
lors du mouvement de fermeture de l'aiguille de soupape (5), l'arête d'étanchéité (38) formée sur la périphérie de la rainure annulaire (35) en direction de la deuxième surface conique (32) vient d'abord en appui contre le siège de soupape (11).
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10222209 | 2002-05-18 | ||
DE10222209 | 2002-05-18 | ||
DE10318989 | 2003-04-25 | ||
DE10318989A DE10318989A1 (de) | 2002-05-18 | 2003-04-25 | Kraftstoffeinspritzventil für Brennkraftmaschinen |
PCT/DE2003/001579 WO2003098031A1 (fr) | 2002-05-18 | 2003-05-15 | Soupape d'injection de carburant pour moteurs a combustion interne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1509693A1 EP1509693A1 (fr) | 2005-03-02 |
EP1509693B1 true EP1509693B1 (fr) | 2006-11-29 |
Family
ID=29550935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03740006A Expired - Lifetime EP1509693B1 (fr) | 2002-05-18 | 2003-05-15 | Soupape d'injection de carburant pour moteurs a combustion interne |
Country Status (5)
Country | Link |
---|---|
US (1) | US7100847B2 (fr) |
EP (1) | EP1509693B1 (fr) |
JP (1) | JP2005526212A (fr) |
DE (1) | DE50305850D1 (fr) |
WO (1) | WO2003098031A1 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10245573A1 (de) * | 2002-09-27 | 2004-04-08 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE102005025135A1 (de) * | 2005-06-01 | 2006-12-07 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
US7360722B2 (en) | 2005-08-25 | 2008-04-22 | Caterpillar Inc. | Fuel injector with grooved check member |
US7578450B2 (en) | 2005-08-25 | 2009-08-25 | Caterpillar Inc. | Fuel injector with grooved check member |
DE102006052817A1 (de) * | 2006-11-09 | 2008-05-15 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102008031271B4 (de) * | 2008-07-02 | 2011-07-28 | Continental Automotive GmbH, 30165 | Düsenbaugruppe für ein Einspritzventil |
JP2010053796A (ja) * | 2008-08-29 | 2010-03-11 | Hitachi Ltd | 燃料噴射弁 |
US8602319B2 (en) | 2010-10-07 | 2013-12-10 | Caterpillar Inc. | Needle valve member with frustoconical guide segment and fuel injector using same |
IT1403006B1 (it) * | 2010-12-06 | 2013-09-27 | O M T Ohg Torino S P A | Polverizzatore ad elevata vita operativa per iniettori meccanici ad alta pressione operanti con combustibile pesante |
EP3006735B1 (fr) * | 2014-10-10 | 2017-08-30 | Siemens Aktiengesellschaft | Dispositif sous-marin pour fournir un fluide sous pression |
JP6354519B2 (ja) * | 2014-10-23 | 2018-07-11 | 株式会社デンソー | 燃料噴射弁 |
JP6355765B2 (ja) * | 2015-01-30 | 2018-07-11 | 日立オートモティブシステムズ株式会社 | 燃料噴射弁 |
KR101986973B1 (ko) * | 2019-03-07 | 2019-06-07 | 이수철 | 이중 접촉면을 가지는 연료분사밸브 |
DE102019210551A1 (de) * | 2019-07-17 | 2021-01-21 | Robert Bosch Gmbh | Kraftstoffinjektor |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1952816A (en) * | 1931-04-04 | 1934-03-27 | Bendix Res Corp | Fuel injector |
GB702797A (en) * | 1950-11-13 | 1954-01-20 | Rudolf L Orange | Improvements in or relating to fuel-injection nozzles for internal combustion engines |
JPS61118556A (ja) * | 1984-11-14 | 1986-06-05 | Toyota Central Res & Dev Lab Inc | 間欠式渦巻噴射弁 |
DE3624476A1 (de) * | 1986-07-19 | 1988-01-28 | Bosch Gmbh Robert | Einspritzventil |
DE3719459A1 (de) * | 1987-06-11 | 1988-12-29 | Bosch Gmbh Robert | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
US4974565A (en) * | 1988-02-26 | 1990-12-04 | Toyota Jidosha Kabushiki Kaisha | Fuel swirl generation type fuel injection valve and direct fuel injection type spark ignition internal combustion engine mounted with the fuel injection valve |
JP3144136B2 (ja) * | 1993-03-31 | 2001-03-12 | 株式会社デンソー | 三方電磁弁 |
JP4221898B2 (ja) * | 2000-02-29 | 2009-02-12 | 株式会社デンソー | 燃料噴射ノズル |
IT1319988B1 (it) * | 2000-03-21 | 2003-11-12 | Fiat Ricerche | Spina di chiusura di un ugello in un iniettore di combustibile permotori a combustione interna. |
-
2003
- 2003-05-15 WO PCT/DE2003/001579 patent/WO2003098031A1/fr active IP Right Grant
- 2003-05-15 DE DE50305850T patent/DE50305850D1/de not_active Expired - Lifetime
- 2003-05-15 JP JP2004505529A patent/JP2005526212A/ja active Pending
- 2003-05-15 EP EP03740006A patent/EP1509693B1/fr not_active Expired - Lifetime
- 2003-05-15 US US10/508,938 patent/US7100847B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20050178860A1 (en) | 2005-08-18 |
WO2003098031A1 (fr) | 2003-11-27 |
EP1509693A1 (fr) | 2005-03-02 |
JP2005526212A (ja) | 2005-09-02 |
US7100847B2 (en) | 2006-09-05 |
DE50305850D1 (de) | 2007-01-11 |
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