EP1256713A2 - Einspritzvorrichtung für ein Speichereinspritzsystem mit Funktionstrennung von Volumenspeicher und Verteilerstück - Google Patents
Einspritzvorrichtung für ein Speichereinspritzsystem mit Funktionstrennung von Volumenspeicher und Verteilerstück Download PDFInfo
- Publication number
- EP1256713A2 EP1256713A2 EP02100452A EP02100452A EP1256713A2 EP 1256713 A2 EP1256713 A2 EP 1256713A2 EP 02100452 A EP02100452 A EP 02100452A EP 02100452 A EP02100452 A EP 02100452A EP 1256713 A2 EP1256713 A2 EP 1256713A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection device
- volume storage
- storage element
- distributor element
- distributor
- 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- Withdrawn
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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
Definitions
- the present invention relates to an injection device for a storage injection system with functional separation of volume storage and distributor, in particular in a common rail system.
- Accumulator injection systems e.g. Common rail systems known from the prior art.
- the accumulator injection system meet different requirements. Two The main requirements are the realization of a high Storage volume for damping hydraulic vibrations and the distribution of fuel flow across all injectors. Sufficient fatigue strength must also be maintained the high operating pressure can be ensured and tensions minimized in the material as possible.
- the memory injection system includes in particular a rail 12, which connected to a high-pressure pump 10 via a line 9 is. Furthermore, several cross holes 5 are provided on the rail, which lead from a memory 7 to the injectors 3. Consequently the rail 12 simultaneously fulfills the storage function as also the distribution function in the storage injection system. To do this must have sufficient permanent compressive strength small inner diameter or large wall thicknesses provided become. In addition, rounding of intersections of holes is particularly important executed, especially on the intersections 13 between the memory 7 and the cross holes 5. There are high material loads at these points, since in the intersection area from the storage 7 to the outgoing ones Cross holes 5 unfavorable superimpositions of high voltages occur. Therefore, expensive materials with high
- the injection device according to the invention for a storage injection system includes a volume storage element with a volume memory for a volume memory function and a distributor element for a distributor function to injectors the injector.
- the volume storage function and the distributor function according to the invention spatially apart Cut.
- the connections of Lines on the volume storage element or on the distributor element structurally much more variable and the volume storage element and the distributor element can be shorter and / or be made smaller.
- the material tensions on the volume storage element the elimination of the cross holes significantly reduced.
- the material tensions in the distributor element are also clear reduced because of a much smaller center hole in the distributor element can be used.
- volume storage element and the distribution element integrally formed as a component. Consequently a compact injector can be provided in which the volume storage element and the distribution element are immediately adjacent to each other.
- the volume storage element and the distribution element formed as two separate components.
- the two components can be accommodated more flexibly in the engine compartment and there are further degrees of freedom with regard to the arrangement of lines on the two components.
- the individual components can be even cheaper getting produced.
- the volume storage element from a high-strength drawn tube in particular can be produced inexpensively.
- the distributor element preferably has a central bore and several cross holes, which have the same diameter exhibit. This can cause tension in the material Transition area between the center hole and the cross holes be kept particularly low.
- the distributor element To the injection pressure in the distributor element as accurately as possible to be able to adjust is the distributor element with the volume storage element preferably via a connecting line connected, which can be designed as a throttle. Thereby a defined pressure can be set in the distributor element become.
- the distributor element is immediately on Volume storage element attached. This can e.g. by means of a Screwing take place in which the one component in the other component is screwed in.
- the transverse bores on the distributor element are advantageous starting from arranged in one plane from a point on the center hole. This allows the cross holes e.g. cruciform or arranged in a star shape. This can continue the distributor element are made very short because the Cross holes are not arranged in a line next to each other are.
- the center hole in the distributor element is preferred designed as a blind hole with rounded corners.
- the cross bores in the area are particularly preferred the floor rounding arranged. This makes the cross holes easily accessible for edge rounding.
- the distributor element between a line arranged by a high pressure pump and the volume storage element.
- the volume storage element is further preferred designed as a blind hole. This enables a higher possible Pressure load on the volume storage element.
- connection between the line from the High pressure pump and the center hole of the distributor element designed as a throttle. This can make it a relatively stable one Pressure in the center hole are made possible.
- all cross holes are designed as chokes. So can an accurate damping of the injection pressure applied to the injectors be made.
- the distributor element and the volume storage element exclusively by means of exciting machining can be produced because of the spatial Separation of volume storage function and distribution function the stresses in the individual components are reduced can.
- a high-strength material is particularly preferred used.
- a forging process or a Welding process can be dispensed with.
- a pressure measurement for the injection device is preferably carried out by means of a strain measurement. Particularly preferred becomes the strain measurement on the outer surface of the volume storage element carried out by means of strain gauges, because the greatest stretching processes occur here.
- FIGS. 1 and 2 first embodiment according to the present invention described.
- the injection device comprises a volume storage element for a storage injection system 1 and a distributor element 2.
- the volume storage element 1 and the distributor element 2 are separate Components formed and with each other via a connecting line 6 connected.
- the volume storage element 1 is formed as a cylindrical body and includes a volume storage 7 for storing pressurized Fuel.
- the fuel is supplied via a line 9 from a High pressure pump 10 supplied.
- the distributor element 2 has one central center hole 4 and several cross holes going from it 5 on.
- the cross bores 5 are above lines in connection with the injectors 3 of the injection device (see FIG. 1) and feed 3 fuel to each injector.
- the connecting line 6 between the volume storage element 1 and the distributor element 2 can be designed as a throttle be so that a predetermined pressure in the distributor element 2 for a fuel injection.
- the separation of functions between the volume storage element according to the invention 1 un distributor element 2 can thus be a hydraulic damping take place in the volume storage element 1.
- the material stresses occurring in the prior art the transition points to the cross holes can be prevented because the holes in the distributor element are 2 small diameters exhibit.
- the cross holes are the same size or only slightly smaller than the center hole. Thereby the time-consuming rounding of the transition points can also be omitted, which significantly reduces manufacturing costs. All holes can also be simply exciting machining and durability of the component afterwards by applying residual compressive stresses e.g. extended by shot peening or auto-fretting become.
- the connections on the distributor element 2 can be essential be made more variable and the individual components can be arranged more flexibly in the engine compartment. So is optimal adaptation of the components according to the invention Geometry, material and manufacturing processes possible. Furthermore, the necessary rail volume of the volume storage element 1 "modular" by providing various Volume storage elements with different volumes can be adapted to different engines, always uses the same distributor element and other identical components can be.
- the second embodiment corresponds essentially to that first embodiment, so that only differences below be described in detail.
- the volume storage element 1 is in contrast to the first embodiment, the volume storage element 1 attached directly to the distributor element 2.
- an internal thread is formed on the volume storage element 1, into which the distributor element 2 is screwed.
- the volume storage element 1 and the distribution element 2 arranged immediately adjacent to each other, so that a particularly compact injection device is provided becomes.
- the second embodiment corresponds to that first embodiment, so that on the description given there can be referred.
- the third embodiment corresponds essentially to that second embodiment, so that only differences below be described in detail.
- a Connection line 6 between the volume storage element 1 and the distributor element 2 can be designed as a throttle his.
- the third embodiment corresponds to that second embodiment, so that given there Description can be referenced.
- FIGS. 5 to 8 fourth embodiment according to the present invention described.
- the same or functionally the same parts are included with the same reference numerals as in the previous embodiment designated.
- the fourth embodiment corresponds essentially to that third embodiment, so that only differences below be described in detail.
- the connections to the injectors 3 cross-shaped arranged. This is in the sectional view in FIG. 6 better represented.
- the cross holes 5 are based on a point at the center hole in one plane (in FIG. 5 arranged in the section plane VI-VI).
- the distribution element 2 with a very short axial extent be so that the injector is even more compact is constructed.
- FIGS. 7 and 8 show variants for a possible arrangement of the connections for the injectors. In figure 7 they are arranged in a star shape and in FIG. 8 they are Arranged in a T-shape. Otherwise the fourth embodiment corresponds the third embodiment, so that on the description given there can be referenced.
- a fifth is described below with reference to FIG Embodiment described according to the present invention.
- the same or functionally the same parts are included with the same reference numerals as in the previous exemplary embodiments designated.
- the fifth embodiment corresponds essentially to that previous embodiments, so that only differences below be described in detail.
- the center hole 4 is different from the previous embodiments the center hole 4 as a blind hole with a slightly enlarged Diameter formed.
- the transverse bores 5 are arranged.
- the cross holes are rounded easily accessible.
- the injector connections all in the axial direction of the injector to be ordered.
- the fifth embodiment corresponds the previous embodiments, so that reference can be made to the description given there.
- the distributor element 2 between the line 9 from the high pressure pump 10 and the volume storage element 1 is arranged.
- the connections for the injectors 3 are still arranged laterally on the distributor element 2.
- a connection 11 between the line 9 and the distributor element 2 can be designed as a choke. Otherwise it corresponds sixth embodiment the previous embodiments, so that reference is made to the description there can.
- a seventh is described below with reference to FIG Embodiment described according to the present invention.
- the same or functionally the same parts are included with the same reference numerals as in the previous exemplary embodiments designated.
- the seventh embodiment corresponds essentially to that second embodiment, in contrast to the second Embodiment the volume storage element and the distributor element are arranged in a single component 14. This minimizes the possibility of leakage on component 14. Nevertheless, the one-piece component 14 has an inventive one Separation of duties due to the volume storage element is formed in a first region of the component 14 and the distributor element in a second region of the component 14 is formed. Otherwise, the seventh embodiment corresponds the second embodiment, so that there Description can be referenced.
- a pressure sensor e.g. radial or axial be arranged on the distributor element 2 or on the pump side can. It is also possible that a pressure measurement also e.g. strain gauges are carried out on the Are arranged outside of the volume storage element 1.
- the present invention relates to an injection device for a memory injection system a volume storage element 1 with a volume storage 7 for a volume storage function of fuel and a distributor element 2 for a distributor function from fuel to injectors 3 of the injector.
- the volume storage function and the distribution function are spatially separated from each other, whereby the material loads are significantly reduced can be.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims (17)
- Einspritzvorrichtung für ein Speichereinspritzsystem umfassend ein Volumenspeicherelement (1) mit einem Volumenspeicher (7) für eine Volumenspeicherfunktion von Kraftstoff und ein Verteilerelement (2) für eine Verteilerfunktion von Kraftstoff zu Injektoren (3) der Einspritzvorrichtung, wobei die Volumenspeicherfunktion und die Verteilerfunktion räumlich voneinander getrennt sind.
- Einspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Volumenspeicherelement und das Verteilerelement einstückig als ein Bauteil (14) ausgebildet sind.
- Einspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Volumenspeicherelement (1) und das Verteilerelement (2) als zwei separate Bauteile ausgebildet sind.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Verteilerelement (2) eine Mittelbohrung (4) und mehrere Querbohrungen (5) zu den Injektoren (3) aufweist, welche den gleichen Durchmesser aufweisen.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Verteilerelement (2) mit dem Volumenspeicherelement (1) über eine Verbindungsleitung (6) verbunden ist, welche als Drossel ausgebildet ist.
- Einspritzvorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass das Verteilerelement (2) unmittelbar am Volumenspeicherelement (1) befestigt ist.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Querbohrungen (5) am Verteilerelement (2) ausgehend von einem Punkt an der Mittelbohrung (4) in einer Ebene angeordnet sind.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Mittelbohrung (4) im Verteilerelement (2) als Sackloch mit Bodenverrundung (8) ausgebildet ist.
- Einspritzvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Querbohrungen (5) im Bereich der Bodenverrundung (8) angeordnet sind.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Verteilerelement (2) zwischen einer Leitung (9) von einer Hochdruckpumpe (10) und dem Volumenspeicherelement (1) angeordnet ist.
- Einspritzvorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass der Volumenspeicher (7) des Volumenspeicherelements (1) als Sackloch ausgebildet ist.
- Einspritzvorrichtung nach einem der Ansprüche 10 oder 11, dadurch gekennzeichnet, dass eine Verbindung (11) zwischen der Leitung (9) von der Hochdruckpumpe (10) und der Mittelbohrung (4) des Verteilerelements als Drossel ausgebildet ist.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass alle Querbohrungen (5) als Drosseln ausgebildet sind.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass alle als Drossel vorgesehene Bohrungen mittels Erodieren hergestellt sind.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass das Verteilerelement (2) und das Volumenspeicherelement (1) ausschließlich mittels spannender Bearbeitung hergestellt sind.
- Einspritzvorrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass eine Druckmessung für die Einspritzvorrichtung mittels einer Dehnungsmessung erfolgt.
- Einspritzvorrichtung nach Anspruch 16, dadurch gekennzeichnet, dass die Dehnungsmessung an der äußeren Oberfläche des Volumenspeicherelements (1) mittels Dehnungsmessstreifen ausgeführt wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10122423 | 2001-05-09 | ||
DE2001122423 DE10122423A1 (de) | 2001-05-09 | 2001-05-09 | Einspritzvorrichtung für ein Speichereinspritzsystem mit Funktionstrennung von Volumenspeicher und Verteilerstück |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1256713A2 true EP1256713A2 (de) | 2002-11-13 |
EP1256713A3 EP1256713A3 (de) | 2004-11-17 |
Family
ID=7684091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02100452A Withdrawn EP1256713A3 (de) | 2001-05-09 | 2002-05-07 | Einspritzvorrichtung für ein Speichereinspritzsystem mit Funktionstrennung von Volumenspeicher und Verteilerstück |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1256713A3 (de) |
DE (1) | DE10122423A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017025348A1 (en) * | 2015-08-10 | 2017-02-16 | Delphi International Operations Luxembourg S.À R.L. | Novel fuel rail for injection system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009002793B4 (de) * | 2009-05-04 | 2011-07-07 | MTU Friedrichshafen GmbH, 88045 | Common-Rail-Kraftstoffeinspritzsystem sowie Brennkraftmaschine, Elektronische Einrichtung und Verfahren zur Steuerung und/oder Regelung einer Brennkraftmaschine |
DE102014215810A1 (de) * | 2014-08-08 | 2016-02-11 | Continental Automotive Gmbh | System zum Betreiben eines Kraftfahrzeugs |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3807196A1 (de) * | 1987-03-06 | 1988-09-15 | Daikin Ind Ltd | Messwertumformer zur aufnahme von druckaenderungen in rohrleitungen |
US5456233A (en) * | 1993-04-28 | 1995-10-10 | Robert Bosch Gmbh | Fuel injection arrangement for internal combustion engines |
DE19747736C1 (de) * | 1997-10-29 | 1999-04-08 | Siemens Ag | Druckspeicher für Kraftstoffversorgungssysteme |
EP0999362A2 (de) * | 1998-11-07 | 2000-05-10 | Lucas Industries Limited | Kraftstoffsystem |
DE19936685A1 (de) * | 1999-08-04 | 2001-02-22 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3806129A1 (de) * | 1987-03-12 | 1988-09-22 | Daimler Benz Ag | Vorrichtung zur ermittlung des einspritzverlaufes bei einem verbrennungsmotor od. dgl. |
JPH09310661A (ja) * | 1996-05-20 | 1997-12-02 | Denso Corp | 直噴式ガソリンエンジンの燃料供給装置 |
DE19640085C2 (de) * | 1996-09-28 | 2001-10-25 | Orange Gmbh | Sperrventil zur Durchflußmengenbegrenzung |
DE19712135C1 (de) * | 1997-03-22 | 1998-08-13 | Mtu Friedrichshafen Gmbh | Kraftstoffeinspritzsystem für eine Brennkraftmaschine |
-
2001
- 2001-05-09 DE DE2001122423 patent/DE10122423A1/de not_active Ceased
-
2002
- 2002-05-07 EP EP02100452A patent/EP1256713A3/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3807196A1 (de) * | 1987-03-06 | 1988-09-15 | Daikin Ind Ltd | Messwertumformer zur aufnahme von druckaenderungen in rohrleitungen |
US5456233A (en) * | 1993-04-28 | 1995-10-10 | Robert Bosch Gmbh | Fuel injection arrangement for internal combustion engines |
DE19747736C1 (de) * | 1997-10-29 | 1999-04-08 | Siemens Ag | Druckspeicher für Kraftstoffversorgungssysteme |
EP0999362A2 (de) * | 1998-11-07 | 2000-05-10 | Lucas Industries Limited | Kraftstoffsystem |
DE19936685A1 (de) * | 1999-08-04 | 2001-02-22 | Bosch Gmbh Robert | Kraftstoffhochdruckspeicher |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017025348A1 (en) * | 2015-08-10 | 2017-02-16 | Delphi International Operations Luxembourg S.À R.L. | Novel fuel rail for injection system |
CN108138722A (zh) * | 2015-08-10 | 2018-06-08 | 德尔福知识产权有限公司 | 用于喷射系统的新颖燃料轨 |
US20180238288A1 (en) * | 2015-08-10 | 2018-08-23 | Delphi Technologies Ip Limited | Fuel rail for injection system |
US10539108B2 (en) | 2015-08-10 | 2020-01-21 | Delphi Technologies Ip Limited | Fuel rail for injection system |
Also Published As
Publication number | Publication date |
---|---|
EP1256713A3 (de) | 2004-11-17 |
DE10122423A1 (de) | 2002-11-21 |
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