WO2002079636A1 - Einspritzventil - Google Patents
Einspritzventil Download PDFInfo
- Publication number
- WO2002079636A1 WO2002079636A1 PCT/DE2002/001092 DE0201092W WO02079636A1 WO 2002079636 A1 WO2002079636 A1 WO 2002079636A1 DE 0201092 W DE0201092 W DE 0201092W WO 02079636 A1 WO02079636 A1 WO 02079636A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- nozzle body
- centering
- injection valve
- centering tool
- Prior art date
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
- 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
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8092—Fuel injection apparatus manufacture, repair or assembly adjusting or calibration
-
- 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 is based on an injection valve, in particular for an internal combustion engine of a motor vehicle, according to the type defined in more detail in the preamble of claim 1.
- Such a valve is known from practice and can be used in particular in connection with common rail accumulator injection systems for diesel combustion machines.
- a known injection valve of the type mentioned in the introduction comprises a nozzle body, in which a nozzle needle is guided axially displaceably and which has, for example, six defined openings which lead to the combustion chamber of the internal combustion engine and are controlled by means of the nozzle needle.
- the openings are in The position of the injection valve is arranged so that a defined injection angle and a defined injection direction are guaranteed.
- the nozzle needle can be controlled by means of a valve-like actuating device which is arranged in a so-called holding body.
- the actuating device can, for example, be equipped with a piezoelectric actuator unit which is used for the axial displacement of a so-called actuating piston, which interacts via a hydraulic coupler with a so-called actuating piston, which in turn is connected to a valve closing member in such a way that pressure changes in a so-called valve control chamber can be generated.
- the pressure changes in the valve control chamber lead to an axial displacement of the nozzle needle, which in turn releases or closes the openings leading to the combustion chamber of the internal combustion engine.
- the holding body generally has key surfaces, which are used to fix and adjust the injection valve on a cylinder head of the internal combustion engine.
- key surfaces which are used to fix and adjust the injection valve on a cylinder head of the internal combustion engine.
- it In order to be able to set a defined injection angle, it must be ensured that the holding body and the nozzle body have a defined orientation to one another. This has so far been ensured by centering pins arranged in bores of the holding body or of the nozzle body.
- centering pins are difficult to assemble and, when tightening one of the holding bodies and body connecting nozzle clamping nut are sheared off.
- centering pin bores reduce the high-pressure strength of the nozzle body, which can have a negative effect in particular on common rail injection valves in which pressures of up to 1.4 kbar prevail. Bore tolerances of the bores receiving the centering pins also cause inaccurate angular centering of the nozzle body and holding body.
- the injection valve according to the invention with the features according to the preamble of claim 1, in which the nozzle body has means on its circumferential surface for engaging a centering tool, has the advantage that at least for angular orientation or angular centering of the nozzle body relative to the holding body Zylin - Der reconstructe omitted, since the nozzle body can be aligned with the holding body by means of a centering tool attachable to the outside of the nozzle body.
- the means for engaging a centering tool are designed as at least one flat surface which is arranged on the circumference of the nozzle body.
- a surface offers a simple possibility of engaging a correspondingly designed centering tool with at least one corresponding centering lug engaging on the flat surface.
- the nozzle body can have two flat surfaces arranged on opposite sides.
- An embodiment with only one flat surface offers the advantage, however, that the risk of rotating the nozzle body relative to the holding body by 180 ° is low, which would lead to incorrect orientation and would render the injection valve unusable.
- the nozzle body on its circumferential surface with at least one groove or a blind hole-like hole in which a corresponding centering tool can engage.
- the nozzle body and the holding body can be connected to one another via a nozzle clamping nut.
- the nozzle body has an increased wall thickness in the area covered by the nozzle clamping nut.
- the means for engaging the centering tool are designed in this area so that they are at least partially covered by the nozzle clamping nut.
- the pressure holding capacity of the injection valve is thus ensured by the means for engaging the centering tool, which can be designed, for example, as ground surfaces.
- the nozzle body can advantageously be oriented relative to the holding body in such a way that this surface is arranged parallel to key surfaces of the holding body.
- any other orientation is also conceivable that enables easy centering.
- FIG. 1 shows a schematic longitudinal section through an injection valve
- FIG. 2 shows a detail of the injection valve according to FIG. 1 in accordance with area II shown in FIG. 1 in an enlarged illustration together with a centering tool
- FIG. 3 shows a simplified cross section through the injection valve according to FIGS. 1 and 2 along the line III-III in FIG. 2,
- Figure 4 is a simplified illustration of a centering tool in longitudinal section
- FIG. 5 shows a plan view of the centering tool of FIG. 4 according to arrow V in FIG. 4.
- an injection valve 1 is shown, which is intended in particular for fuel injection into a diesel engine.
- the injection valve 1 comprises a valve control unit 2 and a nozzle unit 3 with a nozzle body 4, in which a nozzle needle 5 is arranged to be axially displaceable.
- the free end 6 of the nozzle body 4 has a plurality of openings, not shown here, through which fuel can be injected into a combustion chamber of the internal combustion engine. Depending on the position of the nozzle needle 5, the openings are either opened or closed. An injection process is triggered or stopped via the position of the nozzle needle 5.
- the injection valve 1 has the valve control unit 2, which fl chen 33 provided holding body 7 and a housing part 8 adjoining the holding body 7 in the axial direction.
- the nozzle body 4, the housing part 8 and the holding body 7 are clamped to one another via a nozzle clamping nut 9, which rests with a collar 10 on a shoulder 11 of the nozzle body 4 and is fixed to the holding body 7 via a thread 12.
- the shoulder 11 and / or the surface of the collar 10 of the nozzle clamping nut 9 lying against the shoulder 11 can be coated with a sliding material, for example Teflon, so that only a small torque is transmitted to the nozzle body 4 when the nozzle clamping nut 9 is tightened.
- a piezoelectric actuator 14 and a so-called actuating piston 14 connected to the piezoelectric actuator 13 are arranged in the holding body 7 of the valve control unit 2.
- the piezoelectric actuator 13 is connected via electrical lines 15 to a valve control, not shown here.
- the actuating piston 14 interacts via a hydraulic coupler 15 with a so-called actuating piston 16, which is guided in the housing part 8 and is connected to a valve closing member 17.
- the valve closing member 17 in turn interacts with a valve seat 18.
- valve control room 19 which on the one hand bounded by a spring plate 23, in which an inlet throttle 20 and an outlet throttle 22 leading to the valve control unit 2 are formed, and secondly by a valve control piston 24, which forms a structural unit with the nozzle needle 5 and is designed to be axially displaceable in the spring plate 23 ,
- An axial offset of the valve control piston 24 and thus the nozzle needle 5 can be adjusted by changing the pressure level in the valve control chamber 19.
- the inlet throttle 20 connects a high-pressure chamber 21, which contains fuel intended for injection into the combustion chamber of the internal combustion engine, to the valve control chamber 19.
- An injection start, an injection duration and an injection quantity via the openings arranged at the end 6 of the nozzle unit 3 are determined by means of the valve control unit 2.
- valve closing member 18 is actuated by means of the piezoelectric actuator 13, as a result of which fuel can flow out of the valve control chamber 19 via the outlet throttle 22 and the pressure in the valve control chamber 19 drops. This shifts the
- Valve control piston 24 and the nozzle needle 5 connected to it so that the openings leading to the combustion chamber are opened and fuel is injected into the combustion chamber. Accordingly, the injection process is stopped by closing the valve closing member 17.
- the nozzle body 4 has in the region of the collar 10 of the valve clamping nut 9 two flat surfaces 25 and 26 which are aligned in parallel. The two surfaces 25 and 26 form so-called centering surfaces, which are used to attach one
- Centering tool 30 serve.
- the centering tool 30 has two centering lugs 31 and 32, each of which can be inserted into a gap between the annular collar 10 of the valve clamping nut 9 and the nozzle body 4 and thus bear against the centering surfaces 25 and 26, as in FIGS. 2 and 3 is recognizable.
- FIG. 3 shows a cross section through the nozzle unit 3 and the centering tool 30 with the centering lugs 31 and 32 engaging in each case in a gap.
- the nozzle clamping nut 9 is not shown.
- the centering of the nozzle body 4, i.e. the angular orientation of the nozzle body 4 relative to the holding body 7 is achieved in that the nozzle body 4 is rotated relative to the holding body 7 by means of the centering tool 30, which rests against the centering surfaces 25 and 26 via the centering lugs 31 and 32, such that the centering surfaces 25 and 26 and the key surfaces 33, which are formed on the holding body 7, assume the respectively prescribed and required angular position.
- centering pins can be used be dispensed with between the nozzle body 4 and the housing part 8.
- FIGS. 4 and 5 show an alternative embodiment of a centering tool 40, by means of which a nozzle body, not shown here, can be rotated relative to a holding body of an injection valve and thus aligned.
- the centering tool 40 is cup-shaped and has an axially aligned bore 41, so that the centering tool can be plugged onto the nozzle body.
- the bore 41 of the centering tool 40 has a conical surface 42 designed in the manner of a chamfer, which merges into an axially aligned flat surface 43.
- the centering tool 40 is plugged onto the nozzle body, which is pre-assembled with the holding body via a valve clamping nut, so that a conical surface corresponding to the nozzle body is formed on the conical surface 42 and one corresponding to the nozzle body on the flat surface 43 trained so-called centering nose.
- the nozzle body has only one centering nose.
- the centering tool 40 is rotated in the circumferential direction until the prescribed angular position has been assumed between the nozzle body and the holding body. Then the valve tightened nut so that the nozzle body and the holding body are rotatably connected.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Dram (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/296,582 US7036754B2 (en) | 2001-03-29 | 2002-03-26 | Injection valve |
AT02737752T ATE475803T1 (de) | 2001-03-29 | 2002-03-26 | Einspritzventil |
DE50214552T DE50214552D1 (de) | 2001-03-29 | 2002-03-26 | Einspritzventil |
JP2002578019A JP2004518895A (ja) | 2001-03-29 | 2002-03-26 | 噴射弁 |
HU0302417A HUP0302417A3 (en) | 2001-03-29 | 2002-03-26 | Injection valve |
EP02737752A EP1373714B1 (de) | 2001-03-29 | 2002-03-26 | Einspritzventil |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10115649 | 2001-03-29 | ||
DE10115649.9 | 2001-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002079636A1 true WO2002079636A1 (de) | 2002-10-10 |
Family
ID=7679606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/001092 WO2002079636A1 (de) | 2001-03-29 | 2002-03-26 | Einspritzventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US7036754B2 (de) |
EP (1) | EP1373714B1 (de) |
JP (1) | JP2004518895A (de) |
AT (1) | ATE475803T1 (de) |
DE (2) | DE10139622B4 (de) |
HU (1) | HUP0302417A3 (de) |
WO (1) | WO2002079636A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004109818A1 (de) * | 2003-06-04 | 2004-12-16 | Robert Bosch Gmbh | Rohrfeder für aktor und verfahren zur montage der rohrfeder |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050087624A1 (en) * | 2002-05-10 | 2005-04-28 | Siemens Aktiengesellschaft | Injector for fuel injection |
DE10250720A1 (de) * | 2002-10-31 | 2004-05-13 | Robert Bosch Gmbh | Einspritzventil |
WO2005080785A1 (de) * | 2004-02-25 | 2005-09-01 | Ganser-Hydromag Ag | Brennstoffeinspritzventil für verbrennungskraftmaschinen |
DE102005015735A1 (de) * | 2005-04-06 | 2006-10-12 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
CH697562B1 (de) * | 2005-08-09 | 2008-11-28 | Ganser Hydromag | Brennstoffeinspritzventil. |
DE102007045948B3 (de) * | 2007-09-25 | 2008-09-25 | L'orange Gmbh | Montagevorrichtung für einen modular aufgebauten Injektor, sowie Montageverfahren hierzu |
DE102011051903A1 (de) | 2011-07-18 | 2012-10-31 | L'orange Gmbh | Kraftstoff-Einspritzinjektor |
CN105563761A (zh) * | 2014-10-11 | 2016-05-11 | 柳道万和(苏州)热流道系统有限公司 | 一种新型气缸 |
DE102017101999A1 (de) * | 2017-02-01 | 2018-08-02 | Firma L'orange Gmbh | Kraftstoff-Einspritzinjektor für eine Brennkraftmaschine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0781917A1 (de) * | 1995-12-26 | 1997-07-02 | General Motors Corporation | Ventilsitzhalterung eines Brennstoffeinspritzventils |
US5680845A (en) * | 1996-09-06 | 1997-10-28 | Industrial Technology Research Institute | Alignment device of dual-spray injectors for internal combustion engine |
WO1998036170A1 (en) * | 1997-02-18 | 1998-08-20 | Sigmec Ab | Method and device for fuel injection in a combustion engine |
JP2000087828A (ja) * | 1998-09-11 | 2000-03-28 | Honda Motor Co Ltd | エンジン |
DE19951014A1 (de) * | 1999-07-02 | 2001-01-04 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3499607A (en) | 1968-05-07 | 1970-03-10 | Bendix Corp | Fuel injection valve device |
GB1322943A (en) | 1970-08-11 | 1973-07-11 | Barkas Werke Veb | Fuel injectors for internal combustion engines |
US3716922A (en) * | 1970-12-28 | 1973-02-20 | E Shaver | Gauging method and apparatus for diesel injector nozzles |
DE2308261A1 (de) | 1973-02-20 | 1974-08-22 | Bosch Gmbh Robert | Kraftstoffeinspritzduese |
FR2228160B3 (de) | 1973-05-02 | 1976-04-16 | Atlantic Diesel As | |
US4413937A (en) * | 1980-12-18 | 1983-11-08 | Gutsche Guenter E | Elements for a tool system |
US4541206A (en) * | 1983-10-17 | 1985-09-17 | Iolab Corp. | Fixture for holding an optical lens during tumbling |
US4720903A (en) * | 1986-12-12 | 1988-01-26 | Sanford Landa | Tool for assembly and disassembly of planetary for automatic transmission |
IT220660Z2 (it) | 1990-10-31 | 1993-10-08 | Elasis Sistema Ricerca Fiat | Perfezionamenti al sistema di otturatore per alta pressione in una valvola pilota di un iniettore elettromagnetico per sistemi di iniezione del combustibile di motori a combustione interna |
GB9725805D0 (en) | 1997-12-06 | 1998-02-04 | Lucas Ind Plc | Fuel injector nozzle |
-
2001
- 2001-08-11 DE DE10139622.8A patent/DE10139622B4/de not_active Expired - Lifetime
-
2002
- 2002-03-26 AT AT02737752T patent/ATE475803T1/de active
- 2002-03-26 EP EP02737752A patent/EP1373714B1/de not_active Expired - Lifetime
- 2002-03-26 WO PCT/DE2002/001092 patent/WO2002079636A1/de active Application Filing
- 2002-03-26 DE DE50214552T patent/DE50214552D1/de not_active Expired - Lifetime
- 2002-03-26 HU HU0302417A patent/HUP0302417A3/hu unknown
- 2002-03-26 US US10/296,582 patent/US7036754B2/en not_active Expired - Fee Related
- 2002-03-26 JP JP2002578019A patent/JP2004518895A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0781917A1 (de) * | 1995-12-26 | 1997-07-02 | General Motors Corporation | Ventilsitzhalterung eines Brennstoffeinspritzventils |
US5680845A (en) * | 1996-09-06 | 1997-10-28 | Industrial Technology Research Institute | Alignment device of dual-spray injectors for internal combustion engine |
WO1998036170A1 (en) * | 1997-02-18 | 1998-08-20 | Sigmec Ab | Method and device for fuel injection in a combustion engine |
JP2000087828A (ja) * | 1998-09-11 | 2000-03-28 | Honda Motor Co Ltd | エンジン |
DE19951014A1 (de) * | 1999-07-02 | 2001-01-04 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004109818A1 (de) * | 2003-06-04 | 2004-12-16 | Robert Bosch Gmbh | Rohrfeder für aktor und verfahren zur montage der rohrfeder |
US7564175B2 (en) | 2003-06-04 | 2009-07-21 | Robert Bosch Gmbh | Tubular spring for actuator, and method for assembling the tubular spring |
Also Published As
Publication number | Publication date |
---|---|
EP1373714B1 (de) | 2010-07-28 |
DE50214552D1 (de) | 2010-09-09 |
DE10139622B4 (de) | 2018-06-14 |
JP2004518895A (ja) | 2004-06-24 |
DE10139622A1 (de) | 2002-10-02 |
US20030168527A1 (en) | 2003-09-11 |
HUP0302417A2 (hu) | 2003-10-28 |
EP1373714A1 (de) | 2004-01-02 |
ATE475803T1 (de) | 2010-08-15 |
HUP0302417A3 (en) | 2007-02-28 |
US7036754B2 (en) | 2006-05-02 |
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