EP1358404A1 - Brennstoffeinspritzventil - Google Patents
BrennstoffeinspritzventilInfo
- Publication number
- EP1358404A1 EP1358404A1 EP02704618A EP02704618A EP1358404A1 EP 1358404 A1 EP1358404 A1 EP 1358404A1 EP 02704618 A EP02704618 A EP 02704618A EP 02704618 A EP02704618 A EP 02704618A EP 1358404 A1 EP1358404 A1 EP 1358404A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection valve
- fuel injection
- fuel
- valve according
- adapter
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 72
- 238000002347 injection Methods 0.000 title claims abstract description 32
- 239000007924 injection Substances 0.000 title claims abstract description 32
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims 1
- ASGMFNBUXDJWJJ-JLCFBVMHSA-N (1R,3R)-3-[[3-bromo-1-[4-(5-methyl-1,3,4-thiadiazol-2-yl)phenyl]pyrazolo[3,4-d]pyrimidin-6-yl]amino]-N,1-dimethylcyclopentane-1-carboxamide Chemical compound BrC1=NN(C2=NC(=NC=C21)N[C@H]1C[C@@](CC1)(C(=O)NC)C)C1=CC=C(C=C1)C=1SC(=NN=1)C ASGMFNBUXDJWJJ-JLCFBVMHSA-N 0.000 description 2
- 229940127007 Compound 39 Drugs 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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
-
- 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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/045—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the combustion chamber
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9015—Elastomeric or plastic materials
Definitions
- the invention relates to a fuel injection valve according to the preamble of the main claim.
- a valve tube as the main body of the fuel injection valve is formed from three parts.
- a core and a valve seat support are hydraulically tightly connected to one another via a non-magnetic intermediate piece, with at least two joining and connecting points being necessary.
- a fuel injection valve is known in which the number of components of the valve tube is reduced, so that the number of connection and joining points is also reduced.
- the entire valve tube is made of magnetically conductive material, so that there is no need for magnetically non-conductive intermediate pieces.
- a disadvantage of the fuel injector known from DE 195 03 821 AI is that the housing shape of this fuel injector is not suitable for some applications in direct fuel injection since it is too short with regard to the existing installation situation and is not sufficiently sealed against the engine compartment.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that the individual lines that secure the electrical supply and the supply of fuel are guided in an adapter that extends the fuel injector so that the unit as an overall component against the pressure in the intake manifold and / or is sealed in the combustion chamber. This also makes installation easier, as the supply lines are easier to access and all are arranged in one place.
- the adapter is constructed from two tubular hollow bodies which can be plugged into one another and are easy to manufacture.
- Welding can be plugged onto the fuel injector in a form-fitting manner, which facilitates final assembly.
- the fuel supply is advantageously provided in one hollow body and the electrical line is provided in the other hollow body, as a result of which the electrical line can be laid easily and protected against damage.
- Fig. 1 shows a schematic section through
- Fig. 2 shows a • schematic partial section through the fuel injector according to the invention.
- Fig. 1 shows a partial, schematic
- Embodiment of an inventive ⁇ configured fuel injector 1 Embodiment of an inventive ⁇ configured fuel injector 1.
- the fuel injection valve 1 is in the form of a fuel injection valve for fuel injection systems of mixture-compressing, spark-ignited
- the fuel injection valve 1 is particularly suitable for injecting fuel directly into a combustion chamber (not shown) of an internal combustion engine.
- the fuel injection valve 1 comprises a nozzle body 2, in which a valve needle 3 is arranged.
- the valve needle 3 is operatively connected to a valve closing body 4, which cooperates with a valve seat surface 6 arranged on a valve seat body 5 to form a sealing seat.
- fuel injector 1 is an inwardly opening fuel injector 1, which has at least one spray opening 7.
- the nozzle body 2 is sealed by a seal 8 against the outer pole 9 of a magnetic circuit.
- a solenoid 10 is in one Encapsulated coil housing 11 and wound on a coil support 12 which bears against an inner pole 13 of the magnetic circuit.
- the inner pole 13 and the outer pole 9 are separated from one another by a gap 26 and are supported on a connecting component 29.
- the magnet coil 10 is excited via a line 19 by an electrical current that can be supplied via an electrical plug contact 17.
- the line 19 is arranged according to the invention in an adapter 18, which is inserted over an inlet end 34 of the fuel injector 1 and is preferably welded to the fuel injector 1 in the area of the solenoid 10.
- the line 19 is preferably connected to the magnet coil 10 in an electrically conductive manner via a plug connection 41.
- the fuel is supplied via a central fuel supply 16, which is formed in a recess 36 of the adapter 18, which is guided parallel to the line 19, and is filtered by a filter element 25 in the inlet-side end 34 of the fuel injection valve 1.
- the fuel injector 1 is sealed by a first seal 28 against a cylinder head (not shown) and by a second seal 37 against a fuel line (also not shown).
- the adapter 18 consists of two tubular hollow bodies 42 and 43 guided into one another, the inner hollow body 42 ′ leading the fuel from the fuel line, not shown, from the central fuel supply 16 to the filter element 25, while the outer hollow body 43 leads the line 19 and the inner hollow body 42 receives.
- valve needle 3 is guided in a valve needle guide 14, which is disc-shaped.
- a paired adjusting washer 15 is used for stroke adjustment.
- An armature 20 is located on the other side of the adjusting washer 15. This armature is non-positively connected via a first flange 21 to the valve needle 3, which is connected to the first flange 21 by a weld seam 22.
- One is supported on the first flange 21 Return spring 23, which in the present design of the fuel injection valve 1 is preloaded by a sleeve 24.
- a guide disk 35 is formed, which ensures a central alignment of the valve needle 3 and thus counteracts tilting of the valve needle 3 and subsequent inaccuracies in the metered amount of fuel.
- Fuel channels 30a to 30c run in the valve needle guide 14, in the armature 20 and in the guide disk 35.
- Excitation of the magnet coil 10 builds up a magnetic field which moves the armature 20 against the spring force of the return spring 23 in the stroke direction, the stroke being caused by a in the rest position between the inner pole 12 and the
- Anchor 20 located working gap 27 is predetermined.
- Armature 20 also carries the flange 21, which is welded to the valve needle 3, in the lifting direction.
- the valve closing body which is operatively connected to the valve needle 3
- the armature 20 drops from the inner pole 13 after the magnetic field has been sufficiently reduced by the pressure of the return spring 23, as a result of which the flange 21 which is operatively connected to the valve needle 3 moves counter to the stroke direction.
- the valve needle 3 is thereby moved in the same direction, whereby the Valve closing body 4 is placed on the valve seat 6 and the fuel fine injection valve 1 is closed.
- the sealing of the adapter 18 against the pressure of the combustion chamber or. of the intake manifold takes place in three different ways during the assembly of the fuel injector 1.
- the housing of the fuel injector 1 formed from the nozzle body 2 and the outer pole 9 of the solenoid 10 is plugged together and sealed against the external pressure by means of the seal 8 arranged in between.
- the connection between the coil housing 11 and the inner pole 9 is preferably made by welding, as is the connection between the coil housing 11 and the adapter 18.
- the coil housing 11 can also be formed in one piece with the adapter 18, so that there is less of a joint.
- the above-mentioned sealing against the pressure in the intake manifold and / or in the combustion chamber takes place via the first seal 28, while the second seal 37 in connection with a support disk 38 seals against the pressure in the fuel line.
- the seals 8, 28 and 37 are preferably designed as O-rings, which can be produced inexpensively and resistant to influences such as heat or solution of the fuel.
- a recess 45 formed between the inner hollow body 42 and the outer hollow body 43 as well as other gaps 40 that occur are filled with a sealing compound 39 and thus also sealed.
- FIG. 2 shows in a further, only partly sectional schematic view of the erf indungshack "enriched Brennstof finely injection valve. 1
- the outflow-side part of the fuel injection valve 1 is shown uncut.
- the interconnected housing parts nozzle body 2, outer pole 9 and coil housing 11 can be seen.
- the adapter 18 is arranged, which is shown partially in section is.
- the right-hand side of the drawing shows the inner hollow body 42 uncut, in order to show the ease of plugging onto the inlet-side end 34 of the fuel injector 1.
- the outer hollow body 43 which is shown in section, is flush with the coil housing 11, a shoulder 44 being provided on the side of the plug connection 41 in order to keep the plug connection 41 accessible from the outside.
- the recess 36 between the inner hollow body 42 and the outer hollow body 43 and the gaps 40 emanating therefrom are filled with sealing compound 39, as a result of which an easy-to-implement sealing can take place, in particular in the critical area of the fuel feed line and the electrical contact.
- the invention is not limited to the illustrated embodiments and z. B. also applicable for fuel injectors 1 with 'magnetostrictive or piezoelectric actuators 10 and any designs of fuel injectors 1.
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)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10103932 | 2001-01-30 | ||
| DE10103932A DE10103932B4 (de) | 2001-01-30 | 2001-01-30 | Brennstoffeinspritzventil |
| PCT/DE2002/000296 WO2002061270A1 (de) | 2001-01-30 | 2002-01-28 | Brennstoffeinspritzventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1358404A1 true EP1358404A1 (de) | 2003-11-05 |
| EP1358404B1 EP1358404B1 (de) | 2005-06-15 |
Family
ID=7672093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02704618A Expired - Lifetime EP1358404B1 (de) | 2001-01-30 | 2002-01-28 | Brennstoffeinspritzventil |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6896210B2 (de) |
| EP (1) | EP1358404B1 (de) |
| JP (1) | JP2004518067A (de) |
| DE (2) | DE10103932B4 (de) |
| WO (1) | WO2002061270A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009000184A1 (de) | 2009-01-13 | 2010-07-15 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3010612A1 (de) * | 1980-03-20 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | Elektromagnetisch betaetigbares ventil |
| GB9014334D0 (en) * | 1990-06-27 | 1990-08-15 | Lucas Ind Plc | Fuel injector |
| CA2151841A1 (en) * | 1992-12-21 | 1994-07-07 | Barry Richard Neumann | Fluid injector |
| IT232490Y1 (it) * | 1994-07-01 | 2000-01-10 | Elasis Sistema Ricerca Fiat | Dispositivo di registrazione della corsa dell'otturatore per un iniettore di combustibile |
| DE19503821A1 (de) * | 1995-02-06 | 1996-08-08 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Ventil |
| US5755386A (en) * | 1995-12-26 | 1998-05-26 | General Motors Corporation | Fuel injector deep drawn valve guide |
| DE19626576A1 (de) * | 1996-07-02 | 1998-01-08 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| DE19712591A1 (de) * | 1997-03-26 | 1998-10-01 | Bosch Gmbh Robert | Brennstoffeinspritzventil und Verfahren zur Herstellung sowie Verwendung eines Brennstoffeinspritzventils |
| DE19736682A1 (de) * | 1997-08-22 | 1999-02-25 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| DE19855568A1 (de) * | 1998-12-02 | 2000-06-08 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| US6123275A (en) | 1999-08-12 | 2000-09-26 | Delphi Technologies, Inc. | Dual gap fuel injector |
-
2001
- 2001-01-30 DE DE10103932A patent/DE10103932B4/de not_active Expired - Fee Related
-
2002
- 2002-01-28 EP EP02704618A patent/EP1358404B1/de not_active Expired - Lifetime
- 2002-01-28 US US10/240,462 patent/US6896210B2/en not_active Expired - Fee Related
- 2002-01-28 JP JP2002561186A patent/JP2004518067A/ja not_active Withdrawn
- 2002-01-28 DE DE50203408T patent/DE50203408D1/de not_active Expired - Lifetime
- 2002-01-28 WO PCT/DE2002/000296 patent/WO2002061270A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02061270A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1358404B1 (de) | 2005-06-15 |
| DE10103932B4 (de) | 2010-01-21 |
| US20030168530A1 (en) | 2003-09-11 |
| JP2004518067A (ja) | 2004-06-17 |
| US6896210B2 (en) | 2005-05-24 |
| DE10103932A1 (de) | 2002-08-29 |
| WO2002061270A1 (de) | 2002-08-08 |
| DE50203408D1 (de) | 2005-07-21 |
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