EP1623108A1 - Fuel injection valve for internal combustion engines - Google Patents
Fuel injection valve for internal combustion enginesInfo
- Publication number
- EP1623108A1 EP1623108A1 EP04704544A EP04704544A EP1623108A1 EP 1623108 A1 EP1623108 A1 EP 1623108A1 EP 04704544 A EP04704544 A EP 04704544A EP 04704544 A EP04704544 A EP 04704544A EP 1623108 A1 EP1623108 A1 EP 1623108A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conical section
- fuel injection
- injection channel
- valve
- injection valve
- 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.)
- Granted
Links
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
Definitions
- the fuel injection valve according to the invention for internal combustion engines with the characterizing features of patent claim 1 has the advantage that, with a geometry of the injection channel that is easy to produce, there are lower deflection losses when the fuel enters the injection channel and thus good atomization and directional stability of the injection jet.
- the injection channel has a first conical section and a second conical section adjoining it in the flow direction. Both conical sections taper in the flow direction, so that the cross section of the injection channel from the inlet opening to the outlet opening is reduced.
- Fuel injection valve, Figure 2 is an enlargement of Figure 1 in the area of a
- FIG. 3 shows a further illustration of an injection channel with the corresponding geometric variables
- FIG. 4 and FIG. 5 show further exemplary embodiments for injection channels of fuel injection valves according to the invention.
- FIG. 5 shows a further exemplary embodiment of the injection channel 11 according to the invention.
- the ratio of the opening angle 0. ] _, tt2 of the first conical section 35 and the second conical section 37 are inverted here compared to the previous exemplary embodiments, that is to say that the opening angle ⁇ . ] _ of the first conical section 35 is smaller than the opening angle 0C2 of the second conical section 37.
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003115967 DE10315967A1 (en) | 2003-04-08 | 2003-04-08 | Fuel ejecting valve for internal combustion engine, has injecting duct with conical sections, each narrowed along the flow direction and has different opening angles |
PCT/DE2004/000101 WO2004092576A1 (en) | 2003-04-08 | 2004-01-23 | Fuel injection valve for internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1623108A1 true EP1623108A1 (en) | 2006-02-08 |
EP1623108B1 EP1623108B1 (en) | 2008-06-11 |
Family
ID=33016208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04704544A Expired - Lifetime EP1623108B1 (en) | 2003-04-08 | 2004-01-23 | Fuel injection valve for internal combustion engines |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1623108B1 (en) |
JP (1) | JP2006522887A (en) |
CN (1) | CN1771390A (en) |
DE (2) | DE10315967A1 (en) |
WO (1) | WO2004092576A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2876750B1 (en) * | 2004-10-19 | 2010-09-17 | Renault Sas | INJECTION NOZZLE HAVING DIFFERENT HOLES OF CONICITY AND ENGINE COMPRISING SUCH A NOZZLE |
FR2892452A1 (en) * | 2005-10-26 | 2007-04-27 | Peugeot Citroen Automobiles Sa | Combustion chamber for e.g. diesel engine, is defined by cylinder head comprising passage in which injector is housed, where injector has head and nose in between which shield provided with openings relative to injector holes, is disposed |
DE102006062008A1 (en) * | 2006-12-29 | 2008-07-03 | Robert Bosch Gmbh | High pressure applying device for air-compressing auto-ignition internal combustion engine, has high pressure channel comprising blind hole, where section hole in region of hole base opens out into blind hole over sectional surface |
DE102007051408A1 (en) | 2007-10-25 | 2009-05-28 | Prelatec Gmbh | Method for drilling holes of defined geometries by means of laser radiation |
DE102008041676A1 (en) | 2008-08-29 | 2010-03-04 | Robert Bosch Gmbh | Fuel injector |
EP2187043A1 (en) * | 2008-11-14 | 2010-05-19 | Delphi Technologies Holding S.à.r.l. | Injection nozzle |
DE102008055069A1 (en) | 2008-12-22 | 2010-07-01 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines, has valve body, in which pressure chamber is formed, and valve needle is arranged in longitudinally sliding manner in pressure chamber |
WO2010121767A1 (en) * | 2009-04-20 | 2010-10-28 | Prelatec Gmbh | Nozzle having at least one spray hole for vaporizing fluids |
CN103032232B (en) * | 2011-10-10 | 2015-11-04 | 中国科学院力学研究所 | A kind of engine fuel nozzle |
US9151259B2 (en) * | 2012-06-11 | 2015-10-06 | Continental Automotive Systems, Inc. | Stepped orifice hole |
CN104919174A (en) * | 2013-01-11 | 2015-09-16 | Kw技术有限两合公司 | Device for spraying liquid into an operating chamber |
DE102014225394A1 (en) * | 2014-12-10 | 2016-06-16 | Continental Automotive Gmbh | Nozzle body and fluid injection valve |
CN105275698B (en) * | 2015-11-13 | 2017-11-10 | 吉林大学 | A kind of engine variable-frequency fuel-injection mouth |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6049262U (en) * | 1983-09-14 | 1985-04-06 | 日産自動車株式会社 | Diesel engine fuel injection valve |
JPH0612106B2 (en) * | 1986-09-25 | 1994-02-16 | いすゞ自動車株式会社 | Injection nozzle structure |
GB8817774D0 (en) | 1988-07-26 | 1988-09-01 | Lucas Ind Plc | Fuel injectors for i c engines |
JPH01300055A (en) * | 1988-05-27 | 1989-12-04 | Hitachi Ltd | Fuel injection valve |
SU1740756A1 (en) * | 1989-11-14 | 1992-06-15 | Д.В.Нечипоренко | Diesel atomizer sprayer |
JPH05231271A (en) * | 1992-02-26 | 1993-09-07 | Isuzu Motors Ltd | Fuel injection nozzle |
JPH10331747A (en) * | 1997-06-02 | 1998-12-15 | Denso Corp | Fuel injection nozzle and manufacture thereof |
JP2001182641A (en) * | 1999-12-24 | 2001-07-06 | Denso Corp | Fuel injection nozzle and method of manufacturing it |
DE10105674A1 (en) * | 2001-02-08 | 2002-08-29 | Siemens Ag | Fuel injection nozzle for an internal combustion engine |
-
2003
- 2003-04-08 DE DE2003115967 patent/DE10315967A1/en not_active Withdrawn
-
2004
- 2004-01-23 DE DE502004007360T patent/DE502004007360D1/en not_active Expired - Lifetime
- 2004-01-23 CN CN 200480009315 patent/CN1771390A/en active Pending
- 2004-01-23 EP EP04704544A patent/EP1623108B1/en not_active Expired - Lifetime
- 2004-01-23 WO PCT/DE2004/000101 patent/WO2004092576A1/en active IP Right Grant
- 2004-01-23 JP JP2006504224A patent/JP2006522887A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2004092576A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004092576A1 (en) | 2004-10-28 |
DE10315967A1 (en) | 2004-10-21 |
DE502004007360D1 (en) | 2008-07-24 |
CN1771390A (en) | 2006-05-10 |
JP2006522887A (en) | 2006-10-05 |
EP1623108B1 (en) | 2008-06-11 |
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