EP2336543A3 - Fuel injector valve for combustion engines - Google Patents
Fuel injector valve for combustion engines Download PDFInfo
- Publication number
- EP2336543A3 EP2336543A3 EP10189366.7A EP10189366A EP2336543A3 EP 2336543 A3 EP2336543 A3 EP 2336543A3 EP 10189366 A EP10189366 A EP 10189366A EP 2336543 A3 EP2336543 A3 EP 2336543A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure chamber
- valve
- combustion engines
- fuel injector
- injector 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.)
- Withdrawn
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
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
- F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
-
- 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
- F02M51/0678—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 all portions having fuel passages, e.g. flats, grooves, diameter reductions
-
- 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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/28—Details of throttles in fuel-injection apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem Ventilkörper (1), in dem ein Druckraum (7) ausgebildet ist, in dem eine Ventilnadel (5) längsverschiebbar angeordnet ist, die mit einem Ventilsitz (17) zusammenwirkt. Durch das Zusammenwirken der Ventilnadel (5) mit dem Ventilsitz (17) wird ein Kraftstoffstrom zu wenigstens einer Einspritzöffnung (20) freigegeben oder unterbrochen, wobei im Druckraum (7) eine Spaltdrossel (19) der Breite (B) gebildet ist, durch die der Kraftstoffstrom zu den Einspritzöffnungen (20) fließt. Die Wand des Druckraums (7) verformt sich elastisch durch den im Druckraum (7) herrschenden Druck derart, dass die Breite (B) der Spaltdrossel (19) um 2 bis 8 µm pro 1000 bar Druck zunimmt. Fuel injection valve for internal combustion engines with a valve body (1) in which a pressure chamber (7) is formed, in which a valve needle (5) is arranged longitudinally displaceable, which cooperates with a valve seat (17). By the interaction of the valve needle (5) with the valve seat (17), a fuel flow to at least one injection port (20) is released or interrupted, wherein in the pressure chamber (7) a gap throttle (19) of the width (B) is formed by the Fuel flow to the injection ports (20) flows. The wall of the pressure chamber (7) deforms elastically by the pressure prevailing in the pressure chamber (7) such that the width (B) of the gap throttle (19) increases by 2 to 8 microns per 1000 bar pressure.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009055036 | 2009-12-21 | ||
DE102010043110A DE102010043110A1 (en) | 2009-12-21 | 2010-10-29 | Fuel injection valve for internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2336543A2 EP2336543A2 (en) | 2011-06-22 |
EP2336543A3 true EP2336543A3 (en) | 2013-07-03 |
Family
ID=43759914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10189366.7A Withdrawn EP2336543A3 (en) | 2009-12-21 | 2010-10-29 | Fuel injector valve for combustion engines |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2336543A3 (en) |
DE (1) | DE102010043110A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201322485D0 (en) * | 2013-12-19 | 2014-02-05 | Delphi Tech Holding Sarl | Fuel injection nozzle |
DE102016000350A1 (en) * | 2016-01-15 | 2017-03-02 | L'orange Gmbh | fuel injector |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003012282A1 (en) * | 2001-07-27 | 2003-02-13 | Robert Bosch Gmbh | Fuel injection valve |
DE10149961A1 (en) * | 2001-10-10 | 2003-04-30 | Bosch Gmbh Robert | Fuel injection device for internal combustion engine, especially common rail injector, has flow path control sections interacting to give defined flow characteristic against time |
DE102007032741A1 (en) * | 2007-07-13 | 2009-01-15 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
DE102009003145A1 (en) * | 2009-05-15 | 2010-11-18 | Robert Bosch Gmbh | Fuel injector for internal combustion engine for injecting fuel under high pressure, comprises nozzle needle and control valve which controls nozzle needle for opening and closing injection opening |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19725198A1 (en) * | 1997-06-14 | 1998-12-17 | Bosch Gmbh Robert | Fuel injector |
DE10157419A1 (en) * | 2001-11-23 | 2003-06-12 | Bosch Gmbh Robert | Leakage-reduced pressure supply for fuel injectors |
DE10260724A1 (en) * | 2002-12-23 | 2004-07-01 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
-
2010
- 2010-10-29 DE DE102010043110A patent/DE102010043110A1/en not_active Withdrawn
- 2010-10-29 EP EP10189366.7A patent/EP2336543A3/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003012282A1 (en) * | 2001-07-27 | 2003-02-13 | Robert Bosch Gmbh | Fuel injection valve |
DE10149961A1 (en) * | 2001-10-10 | 2003-04-30 | Bosch Gmbh Robert | Fuel injection device for internal combustion engine, especially common rail injector, has flow path control sections interacting to give defined flow characteristic against time |
DE102007032741A1 (en) * | 2007-07-13 | 2009-01-15 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
DE102009003145A1 (en) * | 2009-05-15 | 2010-11-18 | Robert Bosch Gmbh | Fuel injector for internal combustion engine for injecting fuel under high pressure, comprises nozzle needle and control valve which controls nozzle needle for opening and closing injection opening |
Also Published As
Publication number | Publication date |
---|---|
EP2336543A2 (en) | 2011-06-22 |
DE102010043110A1 (en) | 2011-06-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F02M 61/12 20060101ALI20130529BHEP Ipc: F02M 51/06 20060101ALI20130529BHEP Ipc: F02M 61/10 20060101ALI20130529BHEP Ipc: F02M 61/16 20060101ALI20130529BHEP Ipc: F02M 47/02 20060101AFI20130529BHEP |
|
17P | Request for examination filed |
Effective date: 20140103 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
17Q | First examination report despatched |
Effective date: 20140205 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20200818 |