EP2705245A1 - Brennstoffverteiler und system mit einem brennstoffeinspritzventil - Google Patents
Brennstoffverteiler und system mit einem brennstoffeinspritzventilInfo
- Publication number
- EP2705245A1 EP2705245A1 EP12710076.6A EP12710076A EP2705245A1 EP 2705245 A1 EP2705245 A1 EP 2705245A1 EP 12710076 A EP12710076 A EP 12710076A EP 2705245 A1 EP2705245 A1 EP 2705245A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cup
- support element
- fuel
- hold
- fuel injection
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- 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
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
-
- 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
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
-
- 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
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
-
- 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 distributor, in particular for
- Internal combustion engine is used, and a system with a fuel injection valve.
- the invention relates to the field of medium-pressure systems
- Fuel rail is used, which is designed for high pressure applications made of steel or aluminum. As a result, a compressive strength for pressures of, for example, 20 MPa (200 bar) can be achieved. Fuel rail manifolds may also be used for low pressure applications at 0.5 MPa (5 bar). Of the
- a hold-down spring is used, which sits between the fuel rail and the fuel injection valve.
- a holding force of 500 N the holding force
- Fuel injection valve are held down in a cylinder head of an internal combustion engine. As a result, the fuel injection valve is securely positioned on the cylinder head, whereby neither by the combustion pressure of a combustion chamber nor by
- Vibration accelerations may occur a removal of the fuel injection valve from the desired position.
- an embodiment of the metal fuel distributor strip is required.
- the fuel distributor according to the invention with the features of claim 1 and the system according to the invention with the features of claim 10 have the advantage that the use of a hold-down spring or the like with reduced requirements for at least one material that is used to design the fuel distributor, is possible. Specifically, it is possible that inexpensive, but only with a limited
- the distributor body and the cup are formed from a plastic.
- the distributor body comprises the cup, so that the cup is an integral part of the distributor body.
- Distributor body with several cups be designed as an injection molded part.
- Plastic design is a cost-effective production possible.
- a support surface is formed by the arranged on the cup support member, which allows a support of a hold-down spring or the like. The acting on the plastic surface pressure is thereby significantly reduced, so that a flow away of the plastic is avoided and the required tolerances can be met.
- the support element is designed as an annular or partially annular
- Support element configured, wherein the support element is connected to the end of the cup.
- an annular configuration of the support member allows a uniform force distribution of the hold-down spring on the end of the cup and at the same time a good connection of the support member with the end of the cup.
- the support element is connected by means of a positive connection with the end of the cup.
- the positive connection may in this case be configured by a bevel, a step, by a dovetail connection or the like.
- the support member may also be connected by at least partial injection into the end of the cup with the end of the cup. In this case, it is possible for the positive connection to be designed during the injection.
- the support element has at least one holding arm with which the support element is held at the end of the cup. Preferably, in this case two or more retaining arms are provided, which allow a reliable attachment of the support member at the end of the cup, for example, by acting against each other
- Holding forces are applied by the retaining arms.
- the holding arms are each pressed with a bias against an outer side of the cup.
- the holding arms can bow-shaped
- the holding arms each have a barb, wherein each barb engages behind a provided on an outer side of the cup stage.
- a latching connection can be configured, which allows easy mounting of the support member on the cup and, among other things, ensures a transport safety.
- the support element has at least one tongue which engages at least partially in a recess provided on an outer side of the cup.
- the support element can first be placed on the cup and then the tongue can be provided in the recess provided on the cup
- the support element has at least one tongue which is provided resiliently inwardly, is sharp-edged and digs into an outer side of the cup.
- a certain positive connection can be achieved.
- a transport lock can also be achieved.
- a hold-down spring is provided, which is connected to the support element.
- the support element may be stamped on the hold-down spring.
- FIG. 1 shows a system with a fuel distributor and a fuel injection valve in a schematic representation according to a first embodiment of the invention.
- Figure 2 is a support element of a system in a schematic representation according to a second embodiment of the invention.
- FIG. 3 shows the support element illustrated in FIG. 2 in a schematic sectional view along the section line labeled III according to a possible embodiment of the invention;
- FIG. 4 shows the support element shown in FIG. 2 in a schematic sectional view along the section line labeled III according to another possible embodiment of the invention
- FIG. 5 shows a support element in a schematic sectional representation according to a third embodiment of the invention.
- Fig. 6 is a partial, schematic sectional view of the fuel distributor shown in Fig. 1 according to a fourth embodiment of the invention.
- Fig. 7 in Fig. 6 in excerpts shown fuel distributor in a schematic sectional view according to a fifth embodiment of the invention.
- the system 1 shows a system 1 with a fuel distributor 2, a fuel injection valve 3 and a support element 4.
- the system 1 in this case comprises a hold-down spring 5.
- the fuel distributor 2 is not necessarily part of the system 1.
- Hold-down spring 5 but not include the fuel distributor 2 and are manufactured and sold in this way as a system 1.
- the fuel distributor 2 may also comprise the support element and optionally also the hold-down spring 5 and be manufactured and distributed to this extent.
- the system 1 can also be called
- the fuel distributor 2 and the system 1 are particularly suitable for a
- Fuel injection system which is operated with a medium pressure.
- a fuel is preferably in a range of 3 MPa to 10 MPa or 30 bar promoted to 100 bar in the fuel distributor 2.
- the mean pressure may be in the range of 5 MPa to 7 MPa or 50 bar to 70 bar.
- fuel distributor 2 according to the invention and the system 1 according to the invention are also suitable for other applications.
- the fuel distributor 2 of the first embodiment has a distributor body 10 which comprises a distributor tube 1 1 and a plurality of cups 12 arranged next to one another on the distributor tube 1 1.
- a connection 13 which can be configured in accordance with a high-pressure connection
- fuel under the medium pressure can be guided into a fuel 14 provided in the interior of the distributor pipe 11.
- a channel the fuel from the fuel chamber 14 can be guided to the fuel injection valve 3 fixed in the cup 12.
- an inlet-side end 15 of the fuel injection valve 3 is at least partially inserted into the cup 12.
- the fuel can be injected at a combustion chamber end 16 of the fuel injection valve 3 via one or more nozzle openings in a combustion chamber of an internal combustion engine.
- the fuel distributor 2 In the mounted state, the fuel distributor 2 is in a fixed position at a certain distance from the internal combustion engine, not shown.
- Fuel injection valve 3 is in this case fixed between the cup 12 of the fuel distributor 2 and a cylinder bore of the internal combustion engine.
- the hold-down spring 5 is biased during assembly, so that a biasing force acts on the fuel injection valve 3, which holds the fuel injection valve 3 against the cylinder head.
- the fuel injection valve 3 may be held down with a biasing force of about 500 N in the cylinder head.
- the distributor body 10 of the fuel distributor 2 and the cup 12 are made of a
- the cup 12 is an integral part of the distributor body 10.
- the distributor body 10 may be configured with the cup 12 as an injection molded part.
- the support member 4 is arranged on the cup 12, the support member 4 is arranged.
- the support member 4 forms a support surface 17 at one end 18 of the cup 12th
- the support member 4 is configured as an annular or partially annular support member 4 and connected to the end 18 of the cup 12. The support member 4 is thus part of the fuel distributor 2 of the first embodiment.
- a base body 20 is provided at the upstream end 15 of the fuel injection valve 3, which is the
- Hold-down spring 5 receives.
- the base body 20 may be placed from the inlet end 15 to the rest of the fuel injection valve 3.
- the base body 20 can in this case be detachable or non-detachable with the other components of the
- Fuel injection valve 3 to be connected.
- the hold-down spring 5 has an arc section 21 which is in this
- Embodiment serves as a curved contact portion 21.
- a contact between the arc portion 21 and the support surface 17 of the support member 4 is formed.
- the arcuate contact portion 21 can in this case be moved relative to the support surface 17 in order to allow a biasing of the hold-down spring 5.
- the hold-down spring 5 exerts a hold-down force on the
- Fuel injection valve 3 which has a correspondingly large counterforce on the
- Support element 4 causes.
- the support member 4 distributes this force evenly across the end 18 of the cup 12.
- the surface pressure at the end 18 of the cup 12 is prevented from exceeding the allowable range.
- Plastic prevents and ensures compliance with the required tolerances. Creep of the plastic in the region of the contact point is therefore prevented.
- the bias of the hold-down spring 5 can be distributed over a large area and the surface pressure can be greatly reduced.
- a flow of the plastic is prevented and the cup 12 holds, in particular at its end 18, the predetermined shape and the predetermined tolerances.
- the hold-down spring 5 may be connected to the support element 4.
- the ring-shaped support element 4 can be directly impressed on the hold-down spring 5.
- the annular disk-shaped support member 4 via the hold-down spring 5 on the base body 20.
- Fuel injection valve 3 to be fixed and reach during assembly to the fuel distributor 2 in the position at the end 18 of the cup 12. The for the bias of the
- Hold-down spring 5 required freedom of movement can be achieved by a suitable design of the support member 4 and / or the base body 20.
- Hold-down spring 5 to be connected and at the same time fixed to the fuel distributor 2. In this case, the hold-down spring 5 becomes in mounting against the fuel injection valve
- Fig. 2 shows a support member 4 of a system 1 and a fuel distributor 2 according to a second embodiment of the invention in a schematic representation.
- the support element 4 in this case comprises a support ring 23 and a plurality of support arms 23, 24, 25, 26. About the support arms 23 to 26, a fixation of the support member 4 on an outer side 27 (Fig.
- FIG. 3 shows the support element 4 shown in Fig. 2 in a schematic
- Sectional view along the designated III cutting line according to a possible embodiment of the invention.
- arc sections 28, 29, 30 of the holding arms 23, 24, 26 are shown, which are bent to the outside 27 of the cup 12 out.
- the holding arm 25 is configured, which also has an arc portion which is biased.
- the support element 4 is thus held at the end 18 of the cup 12.
- 12 recesses, ribs or the like may be provided on the outside 27 of the cup to improve the fixation.
- Fig. 4 shows the support element 4 shown in Fig. 2 in a schematic
- barbs 31, 32, 33 are provided at the ends of the holding arms 23 to 26, which engage behind a provided on the outer side 27 of the cup 12 stage.
- the holding arms 23 to 26 are slightly spread out until the barbs 31, 32, 33 and a barb provided on the holding arm 25 hook behind the intended step.
- FIG. 5 shows a support member 4 and the cup 12 of a fuel distributor 2 in a partial, schematic sectional view corresponding to a third
- the steps 42, 43 are formed in this embodiment by provided on the outer side 27 of the cup 12 recesses 44, 45.
- the support element 4 can first be placed on the end 18 of the cup 12. Subsequently, the tongues 40, 41 can be pressed radially inwards into the depressions 44, 45, so that the engagement of the steps 42, 43 is achieved. The tongues 40, 41 then engage in the depressions 44, 45 provided on the outside 27 of the cup 12.
- the barbs 32, 33 of the holding arms 24, 26 engage behind the steps 42, 43 provided on the outside of the cup 12 in order to achieve the attachment.
- the secure hold of the support member 4 can be achieved on the cup 12 of the manifold body 10 by positive engagement.
- the positive connection can for example via the tongues 40, 41 or barbs 31, 32, 33 come about.
- the tongues 40, 41 of the support element 4 can be configured, for example, by notches 40, 41. However, there are also other scratches or the like conceivable.
- FIG. 6 shows the fuel distributor 2 shown in FIG. 1 in an excerptional, schematic sectional representation according to a fourth exemplary embodiment of the invention.
- the support member 4 is configured as an annular or partially annular support member 4.
- the support surface 17 is provided for the hold-down spring 5.
- the cup 12 has at its end 18 a collar 50, which has radially outwardly directed lugs 51, 52 in section.
- the collar 50 forms a positive connection with the correspondingly configured support element 4.
- the support member 4 can be injected into the end 18 of the cup 12.
- the collar 50 can be configured by a spraying process, wherein the support element 4 is positioned at the end 18 during the injection process.
- FIG. 7 shows the fuel distributor 2 shown in FIG. 6 in an excerptional, schematic sectional view corresponding to a fifth exemplary embodiment of the invention Invention.
- the annular or partially annular support member 4 has an at least approximately rectangular cross-section.
- the support element 4 is inserted into a rectangular recess 53 at the end 18 of the cup 12.
- the collar 50 engages from inside into the support element 4.
- the attachment between the support member 4 and the cup 12 is preferably carried out by injecting the support member 4 in the end 18 of the cup 12.
- Embodiment the connection without positive locking.
- the support element 4 is preferably formed from a metallic material. As a result, unlike an ordinary plastic even at high
- a metallic support element 4 can be attached to the distributor body 10 formed of plastic.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110075057 DE102011075057A1 (de) | 2011-05-02 | 2011-05-02 | Brennstoffverteiler und System mit einem Brennstoffeinspritzventil |
PCT/EP2012/054706 WO2012150080A1 (de) | 2011-05-02 | 2012-03-16 | Brennstoffverteiler und system mit einem brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2705245A1 true EP2705245A1 (de) | 2014-03-12 |
EP2705245B1 EP2705245B1 (de) | 2017-06-14 |
Family
ID=45875954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12710076.6A Not-in-force EP2705245B1 (de) | 2011-05-02 | 2012-03-16 | Brennstoffverteiler |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2705245B1 (de) |
CN (1) | CN103502623B (de) |
DE (1) | DE102011075057A1 (de) |
RU (1) | RU2606728C2 (de) |
WO (1) | WO2012150080A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5074269A (en) * | 1991-04-29 | 1991-12-24 | Chrysler Corporation | Anti-rotation fuel injector clip |
DE10037133A1 (de) * | 2000-07-31 | 2002-02-14 | Volkswagen Ag | Kraftstoffverteilerleiste |
DE10152421A1 (de) * | 2001-10-24 | 2003-06-18 | Bosch Gmbh Robert | Befestigungsvorrichtung |
RU30167U1 (ru) * | 2002-12-15 | 2003-06-20 | Открытое акционерное общество "АВТОВАЗ" | Устройство крепления топливной форсунки на профильной топливной рампе двигателя внутреннего сгорания |
JP3948461B2 (ja) * | 2004-02-17 | 2007-07-25 | マツダ株式会社 | エンジン用燃料噴射装置 |
US7360524B2 (en) * | 2004-12-03 | 2008-04-22 | Millenium Industries, Inc. | Fuel injector retention clip |
EP2187041B1 (de) * | 2005-03-03 | 2015-01-28 | Robert Bosch GmbH | Brennstoffeinspritzvorrichtung |
DE102005009740A1 (de) * | 2005-03-03 | 2006-09-07 | Robert Bosch Gmbh | Brennstoffeinspritzvorrichtung |
EP2199592B1 (de) * | 2007-05-31 | 2011-10-12 | Continental Automotive GmbH | Befestigungsvorrichtung zum Befestigen einer Kraftstoffeinspritzdüse in einem Zylinderkopf eines Verbrennungsmotors |
DE102007049357A1 (de) * | 2007-10-15 | 2009-04-16 | Robert Bosch Gmbh | Brennstoffeinspritzvorrichtung |
US7810471B2 (en) * | 2008-01-14 | 2010-10-12 | Millennium Industries | Two-piece injector cup and method of manufacturing same |
CN201347829Y (zh) * | 2008-12-09 | 2009-11-18 | 奇瑞汽车股份有限公司 | 一种发动机高压油轨 |
-
2011
- 2011-05-02 DE DE201110075057 patent/DE102011075057A1/de not_active Withdrawn
-
2012
- 2012-03-16 WO PCT/EP2012/054706 patent/WO2012150080A1/de active Application Filing
- 2012-03-16 RU RU2013153131A patent/RU2606728C2/ru not_active IP Right Cessation
- 2012-03-16 CN CN201280021114.3A patent/CN103502623B/zh not_active Expired - Fee Related
- 2012-03-16 EP EP12710076.6A patent/EP2705245B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2012150080A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN103502623A (zh) | 2014-01-08 |
EP2705245B1 (de) | 2017-06-14 |
CN103502623B (zh) | 2016-10-12 |
DE102011075057A1 (de) | 2012-11-08 |
RU2013153131A (ru) | 2015-10-27 |
RU2606728C2 (ru) | 2017-01-10 |
WO2012150080A1 (de) | 2012-11-08 |
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