EP1963660A1 - Brennstoffeinspritzventil - Google Patents
BrennstoffeinspritzventilInfo
- Publication number
- EP1963660A1 EP1963660A1 EP06807336A EP06807336A EP1963660A1 EP 1963660 A1 EP1963660 A1 EP 1963660A1 EP 06807336 A EP06807336 A EP 06807336A EP 06807336 A EP06807336 A EP 06807336A EP 1963660 A1 EP1963660 A1 EP 1963660A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- coupler
- fuel injection
- space
- 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
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
-
- 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
- F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
- F02M2547/003—Valve inserts containing control chamber and valve piston
Definitions
- the invention relates to a fuel injection valve for fuel injection systems of internal combustion engines. Specifically, the invention relates to an injector for fuel injection systems of air-compressing, self-igniting internal combustion engines.
- a fuel injection valve for the direct injection of diesel fuel into an internal combustion engine has a valve housing consisting of a plurality of housing parts, wherein a fuel inlet nozzle is provided.
- a channel for the passage of fuel is formed within the valve housing, which opens into a pressure chamber, which is seen in Abspritzides below a hydraulic coupler of the fuel injection valve, provided within the valve housing. From this channel branches off at the height of Hubüber GmbHs adopted an inlet throttle, via the fuel from the channel in a control room of the hydraulic coupler is passed.
- Fuel injection valve has the disadvantage that in the region of the channel serving for passing fuel several intersections are formed, which constitute potential weak points. For example, in a region in which the throttle leading to the control space branches off from the channel, the occurrence of cracks is favored. Corresponding disadvantages also exist at the transitions between the individual housing parts and in the area of bore intersections.
- the inventive fuel injection valve with the features of claim 1 has the advantage that the geometry of the fuel injection valve, in particular the fuel channel, is improved.
- the inventive fuel injection valve is also suitable for applications in which a high pressure of the fuel is required or desired.
- the use of material can be optimized with regard to the desired strength.
- first fuel channel and / or the second fuel channel runs at least substantially rectilinearly. Furthermore, it is advantageous that the second fuel channel connects the coupler space with a fuel space and that the second fuel channel opens at a flat mouth area of the fuel chamber in the fuel space.
- a rectilinear fuel channel which may be designed, for example, as a bore, has the advantage that a high mechanical strength can be achieved, which withstands high fuel pressures. In particular, the formation of cracks is prevented because strength-reducing Verschipungsstellen omitted.
- the coupler space is bounded by a first planar coupler space wall and a second planar coupler space wall opposite the first coupler space wall, on which the flat mouth areas are provided.
- the coupler space can also take over the function of an additional storage space for the fuel.
- the fuel channels open into the coupler space at least substantially opposite one another, as a result of which impairments of the fuel flow, in particular turbulence, are avoided and there are production-related advantages.
- the first coupler space wall and the second coupler space wall can also be at an angle to one another.
- the fuel channels open into the coupler space at least substantially perpendicular to the respective flat mouth surface.
- the mechanical strength in the region of the mouth surface can be further improved.
- Fig. 1 shows a first embodiment of a fuel injection valve of the invention in a partial axial sectional view
- Fig. 2 denoted in Fig. 1 with II section according to a second embodiment of the invention.
- Fig. 1 shows an embodiment of a fuel injection valve 1 of the invention in a schematic, axial sectional view.
- the fuel injection valve 1 can serve, in particular, as an injector for fuel injection systems of mixture-compression, self-igniting internal combustion engines.
- the fuel injection valve 1 is suitable for commercial vehicles or passenger cars.
- a preferred use of the fuel injection valve 1 is for a fuel injection system with a common rail, the diesel fuel under high pressure leads to a plurality of fuel injection valves 1.
- the fuel injection valve 1 according to the invention is also suitable for other applications.
- the fuel injection valve 1 has a valve housing 3 and a valve seat body 4 connected to the valve housing 3 on.
- a valve seat surface 5 is formed, which cooperates with a valve closing body 6 to a sealing seat.
- the valve closing body 6 is formed integrally with a valve needle 7, which is guided by a valve needle guide 8 of the valve housing 3 in the axial direction.
- the valve needle 7 is acted upon by a valve spring 9 in the direction of the sealing seat formed by the valve closing body 6 and the valve seat surface 5 with a spring force.
- the valve housing 3 has a fuel inlet nozzle 10 shown in a simplified manner, to which, for example, by means of a pressure pipe socket, a fuel line for supplying fuel into the fuel injection valve 1 can be connected.
- first fuel channel 11 From the fuel inlet nozzle 10, the fuel flows through a simplistically represented first fuel channel 11 into a coupler space 12 of a hydraulic coupler 13.
- the hydraulic coupler 13 may be designed as a displacement or power amplifier depending on the application.
- a second fuel channel 14 leads into a fuel space 15 within the valve housing 3.
- a magnetically actuated valve actuator 20 which controls a flowing through a throttle 21 from the coupler chamber 12 fuel flow.
- the actuating device 20 thereby enables the control of a pressure of the fuel provided in the operation of the fuel injection valve 1 in the coupler space 12.
- Actuator 20 includes a solenoid 22, an armature 23 and springs 24, 25 which act in opposite directions to each other on the armature 23.
- the magnetic coil 22 is connected by an electrical line 26 with a control device 27 connected.
- For actuating the fuel injection valve 1 is by means of
- Control means 27 generates a current flow through the magnetic coil 22, whereby the armature 23 is moved in the direction of the magnetic coil 22 against the force of the spring 24.
- fuel can flow from the coupler space 12 through the throttle 21 and the open sealing seat into a pressure-relieved space 32. From the pressure-relieved space 32, the fuel can flow via a bore 33 to a fuel outlet 34, which is connected in the assembled state of the fuel injection valve 1 with a fuel tank.
- the pressure of the present in the coupler chamber 12 fuel is reduced by the operation of the armature 23, so that the pressure acting on a pressure shoulder 35 of the valve needle 7 of the fuel provided in the fuel space 15 fuel generates an opening force, the by the Valve spring 9 and the fuel pressure in the coupler chamber 12 applied closing force outweighs, so that the valve needle 7 is adjusted as a result against the force of the valve spring 9.
- the sealing seat formed between the valve closing body 6 and the valve seat surface 5 is opened so that fuel is sprayed from the fuel chamber 15 via the open sealing seat and the discharge opening 36 from the fuel injection valve 1.
- the coupler space 12 is formed by an axial, preferably cylindrical recess and a subsequent, preferably in the region of the fuel channel 11, 14 further provided preferably cylindrical recess.
- the coupler space 12 has a first coupler space wall 40 and a second coupler space wall 41, which preferably lie opposite one another and are configured parallel to one another. Both the first coupler space wall 40 and the second coupler space wall 41 are planar.
- the first coupler space wall 40 comprises a first planar mouth surface 42, on which the first fuel channel 11 opens into the coupler space 12.
- the second coupler space 41 comprises a second planar mouth surface 43 of the coupler space, at which the second fuel channel 14 opens into the coupler space 12.
- the fuel channels 11, 14 each configured rectilinear and, for example, each formed by a through hole. As a result, no intersections are provided within the fuel channels 11, 14, so that a high mechanical strength is ensured even in the area of the fuel channels 11, 14.
- the described embodiment of the fuel injection valve 1 allows the supply of a high-pressure fuel.
- the coupler space 12 constitutes an additional storage space for storing fuel.
- a damping space is formed by the coupler space 12, which dampens pressure waves running counter to the flow direction of the fuel.
- processing steps can be saved in the production of the fuel injection valve 1, since the bore openings of the fuel channels 11, 14 can be rounded together to the coupler space 12 out.
- the configuration of the coupler space 12 can be done for example by an eccentric milling cutter by milling, eccentric turning or as part of a casting process.
- FIG. 2 shows the detail designated II in FIG. 1 in accordance with a second exemplary embodiment of the invention in a schematic sectional representation.
- the first fuel channel 11 opens at the annular first flat mouth surface 42 in the coupler space 12.
- an orifice 45 of the first fuel channel 11 is arranged opposite to an orifice opening 46 of the second fuel channel 14.
- the fuel channels 11, 14 open in the embodiment shown in Fig. 1 offset from each other in the coupler space 12.
- the second embodiment shown in FIG. 2 has the advantage in that the fuel flow from the first fuel channel 11 into the second fuel channel 14 is improved and turbulences and the like are reduced.
- the second fuel channel 14 opens at the annular second flat mouth surface 43 in the coupler space 12th
- the second fuel channel 14 opens perpendicular to the second flat mouth surface 43 in the coupler space 12.
- the first fuel channel 11 opens at least substantially perpendicular to the first flat mouth surface 42 in the coupler space 12.
- the actuating device 20 preferably has a magnetically actuable valve.
- the Actuator 20 may also include a piezoelectric actuator or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005060274A DE102005060274A1 (de) | 2005-12-16 | 2005-12-16 | Brennstoffeinspritzventil |
PCT/EP2006/067489 WO2007071473A1 (de) | 2005-12-16 | 2006-10-17 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1963660A1 true EP1963660A1 (de) | 2008-09-03 |
EP1963660B1 EP1963660B1 (de) | 2009-03-04 |
Family
ID=37487562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06807336A Not-in-force EP1963660B1 (de) | 2005-12-16 | 2006-10-17 | Brennstoffeinspritzventil |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1963660B1 (de) |
AT (1) | ATE424507T1 (de) |
DE (2) | DE102005060274A1 (de) |
WO (1) | WO2007071473A1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19950224A1 (de) * | 1999-10-19 | 2001-04-26 | Bosch Gmbh Robert | Doppelschaltendes Steuerventil für einen Injektor eines Kraftstoffeinspritzsystems für Brennkraftmaschinen mit kugelförmigem Stellglied |
DE10024702A1 (de) * | 2000-05-18 | 2001-11-22 | Bosch Gmbh Robert | Einspritzanordnung für ein Kraftstoff-Speichereinspritzsystem einer Verbrennungsmaschine |
JP3551898B2 (ja) * | 2000-06-15 | 2004-08-11 | トヨタ自動車株式会社 | 燃料噴射弁 |
DE10164123A1 (de) * | 2001-12-24 | 2003-01-30 | Bosch Gmbh Robert | Kraftstoff-Einspritzvorrichtung |
DE10207045A1 (de) * | 2002-02-20 | 2003-08-28 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
-
2005
- 2005-12-16 DE DE102005060274A patent/DE102005060274A1/de not_active Withdrawn
-
2006
- 2006-10-17 DE DE502006003040T patent/DE502006003040D1/de active Active
- 2006-10-17 EP EP06807336A patent/EP1963660B1/de not_active Not-in-force
- 2006-10-17 WO PCT/EP2006/067489 patent/WO2007071473A1/de active Application Filing
- 2006-10-17 AT AT06807336T patent/ATE424507T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2007071473A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102005060274A1 (de) | 2007-06-21 |
EP1963660B1 (de) | 2009-03-04 |
ATE424507T1 (de) | 2009-03-15 |
DE502006003040D1 (de) | 2009-04-16 |
WO2007071473A1 (de) | 2007-06-28 |
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