EP1864015A1 - Kraftstoffhochdruckspeicher sowie verfahren zu dessen herstellung - Google Patents
Kraftstoffhochdruckspeicher sowie verfahren zu dessen herstellungInfo
- Publication number
- EP1864015A1 EP1864015A1 EP06701731A EP06701731A EP1864015A1 EP 1864015 A1 EP1864015 A1 EP 1864015A1 EP 06701731 A EP06701731 A EP 06701731A EP 06701731 A EP06701731 A EP 06701731A EP 1864015 A1 EP1864015 A1 EP 1864015A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure fuel
- accumulator
- pressure
- connecting piece
- elements
- 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 56
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims description 22
- 238000004512 die casting Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012805 post-processing Methods 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9053—Metals
-
- 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
- F02M2200/9053—Metals
- F02M2200/9076—Non-ferrous metals
Definitions
- An injection system is used to supply an internal combustion engine with fuel.
- pressure generation and injection are temporally and locally decoupled from one another.
- a separate high-pressure pump generates an injection pressure in a central high-pressure fuel storage.
- the start of injection and the injection quantity are determined by activation time and activation duration of electrically actuated injectors, which are connected via fuel lines to the high-pressure fuel accumulator.
- electrically actuated injectors which are connected via fuel lines to the high-pressure fuel accumulator.
- the invention relates to a method for producing a high-pressure fuel accumulator for a common rail fuel injection system for internal combustion engines, wherein the high-pressure fuel accumulator - inner part and power connection - and is cast from a high-strength material.
- the invention relates to the high-pressure fuel storage, produced by the method according to the invention.
- the high-pressure fuel storage forges are forged, pulled or rolled.
- DE-A 199 36 533 relates to a high-pressure fuel accumulator for a common-rail fuel injection system of an internal combustion engine having a tubular base body which has a longitudinally extending blind hole bore and a plurality of connections.
- the fuel high-pressure accumulator has a hollow body, which is equipped with several connection openings. The interior of the body is flat in the region of the connection openings.
- the high-pressure fuel accumulator performs the task of storing fuel and pressurizing it to provide it via injectors associated with leads. For this purpose, connecting pieces are provided at the high-pressure fuel storage. These are usually poured in the production of high-pressure fuel storage. Since these are screw connections, it is necessary that they are reworked after the casting process.
- connection elements in the form of mounting straps. These are also produced in the casting process according to the prior art. Since the requirements must be designed according to precise and also the holes must have defined tolerances, at least mechanical post-processing of these connection elements is necessary.
- the object of the invention is to avoid the disadvantages of the prior art, in particular to achieve cost savings in the production of such a high-pressure fuel storage.
- High-pressure fuel accumulator for a common rail fuel proposed injection system for fuel combustion engines in which the connection parts, in particular the connecting pieces and the fastening elements are manufactured separately and cast in a die-casting process to the already prepared body of the high-pressure fuel storage.
- connection elements in particular the connecting pieces, can be produced as turned parts. These are advantageously simple to manufacture in a lathes components of a defined material.
- connection elements produced in this way can then be cast onto the base body by means of a diecasting process.
- the use of aluminum as the casting material for this die casting process means that the weight of the component is considerably lower.
- connection elements in particular the attachments, such as tabs and pads, arise as Gussrohteil and by a simple
- Casting process can be connected to the main body. It also eliminates the necessary per se milling, especially at the radial connection piece. This is due to the fact that these connecting pieces are already completed as turned parts.
- connection elements is freely selectable. This means that customer-specific designs can be realized even in very small series, without this implementation being associated with high costs.
- the main body or the connecting elements are coated before the actual casting process in order to improve the connection between the cast material and the actual components.
- Fig. 1 is a perspective view of a high-pressure fuel storage according to the invention with specially designed connection elements;
- FIG. 2 is a perspective view from below of the high-pressure fuel accumulator shown in Figure 1 with connecting elements, partially in section.
- FIG. 3 is an enlarged view of an alternative embodiment of a high-pressure end closure according to detail III in FIG. 2;
- FIG. 4 shows an enlarged view of the detail IV according to FIG. 2;
- FIG. 5 is an enlarged view of another embodiment of a connecting element in the formation of a fastening element.
- connection element in the form of a fastening element
- FIG. 7 shows a third exemplary embodiment of a connecting element in the form of a fastening element. Description of the embodiments
- a high-pressure fuel storage 1 is shown.
- This high-pressure fuel accumulator 1 consists of a base body 2 and arranged in the base body 2 central bore 3.
- the central bore 3 is fluidly connected to connecting elements in the formation of connecting piece 4.
- connecting elements in the embodiment of fastening elements 6 are provided on an outer wall 5 of the main body 2 of the high-pressure fuel accumulator 1.
- a field 7 is provided for example for the attachment of a nameplate on the base body 2.
- the high-pressure fuel accumulator 1 shown in FIGS. 1 and 2 it is provided to first produce the main body 2 in a high-strength material in a first processing step.
- the connecting pieces 4 and the fastening elements 6 are subsequently produced individually. After the production of these connection elements, these are brought into a die-cast mold together with the main body 2 of the high-pressure fuel accumulator 1, corresponding to the desired arrangement.
- the fuel high-pressure accumulator 1 thus constructed is formed in one piece.
- the high-pressure fuel storage 1 consists of the main body 2 and further surrounds this base body 2, the corresponding die-cast material, here preferably aluminum.
- the connecting pieces 4 cooperate with end closures 9 via a thread not shown in the drawings.
- the end closure 9 is designed in the form of a hollow nut.
- the cutting edge 13 of the connecting piece 4 engages when turning the end cap 9 on the connection piece 4 in a flat surface 14 of the end closure 9, so that is sealed by the intervention of the high-pressure fuel storage 1 evenly.
- connection is web-like, and it is produced a support with a level 8.
- connection of the fastening element 6 is centered on the Basic body 2 is provided. It is further provided to provide a cross-sectionally round support 15, wherein the fastening is effected by means of screws 10. Again, the connection by means of web formations in both simple and in double version, as shown in Figure 6, take place.
- an accumulation of material (in contrast to Figure 6) is provided between the webs 12, so that a free space 11 is formed. It is preferably provided that the fastening element 6 is inserted as a rotary or cast part in the mold and the webs 12 by the further process step, namely the Druckg screenmaschinen form.
- connection elements such as fasteners 6 or 4 connecting pieces with a high-strength and preferably also produced by casting base 2 of a high-pressure fuel storage 1 to connect. This also makes it possible to solve customer-specific requirements in a very simple manner.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Adornments (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005012941A DE102005012941A1 (de) | 2005-03-21 | 2005-03-21 | Kraftstoffhochdruckspeicher sowie Verfahren zu dessen Herstellung |
| PCT/EP2006/050443 WO2006100140A1 (de) | 2005-03-21 | 2006-01-25 | Kraftstoffhochdruckspeicher sowie verfahren zu dessen herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1864015A1 true EP1864015A1 (de) | 2007-12-12 |
| EP1864015B1 EP1864015B1 (de) | 2009-05-20 |
Family
ID=36013324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06701731A Expired - Lifetime EP1864015B1 (de) | 2005-03-21 | 2006-01-25 | Kraftstoffhochdruckspeicher sowie verfahren zu dessen herstellung |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1864015B1 (de) |
| JP (1) | JP2008533386A (de) |
| AT (1) | ATE431902T1 (de) |
| DE (2) | DE102005012941A1 (de) |
| WO (1) | WO2006100140A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20070395U1 (it) * | 2007-11-28 | 2009-05-29 | Rail S P A | Rampa perfezionata per iniettori |
| US20170144768A1 (en) * | 2015-11-24 | 2017-05-25 | Hamilton Sundstrand Corporation | Cabin supply duct |
| KR101777062B1 (ko) * | 2016-10-21 | 2017-09-08 | 주식회사 현대케피코 | 연료 레일의 마운팅 구조체 |
| DE102019220377A1 (de) * | 2019-12-20 | 2021-06-24 | Robert Bosch Gmbh | Fluidverteiler für eine Einspritzanlage, insbesondere Brennstoffverteilerleiste für eine Brennstoffeinspritzanlage für gemischverdichtende, fremdgezündete Brennkraftmaschinen |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT3764U1 (de) * | 1998-11-12 | 2000-07-25 | Avl List Gmbh | Kraftstoffzuführsystem für brennkraftmaschinen |
| DE10037133A1 (de) * | 2000-07-31 | 2002-02-14 | Volkswagen Ag | Kraftstoffverteilerleiste |
| DE10140058A1 (de) * | 2001-08-16 | 2002-10-24 | Bosch Gmbh Robert | Verfahren zur Herstellung eines Kraftstoffhochdruckspeichers |
| JP2004036536A (ja) * | 2002-07-04 | 2004-02-05 | Denso Corp | 蓄圧式燃料噴射装置 |
| DE10305078A1 (de) * | 2003-02-07 | 2004-04-22 | Robert Bosch Gmbh | Kraftstoffhochdruckspeicher |
| DE10307530B4 (de) * | 2003-02-21 | 2006-07-27 | Benteler Automobiltechnik Gmbh | Befestigungselement für eine Kraftstoffverteilerleiste für Brennkraftmaschinen |
-
2005
- 2005-03-21 DE DE102005012941A patent/DE102005012941A1/de not_active Withdrawn
-
2006
- 2006-01-25 AT AT06701731T patent/ATE431902T1/de not_active IP Right Cessation
- 2006-01-25 JP JP2008502355A patent/JP2008533386A/ja not_active Withdrawn
- 2006-01-25 EP EP06701731A patent/EP1864015B1/de not_active Expired - Lifetime
- 2006-01-25 DE DE502006003774T patent/DE502006003774D1/de not_active Expired - Lifetime
- 2006-01-25 WO PCT/EP2006/050443 patent/WO2006100140A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006100140A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE431902T1 (de) | 2009-06-15 |
| WO2006100140A1 (de) | 2006-09-28 |
| DE502006003774D1 (de) | 2009-07-02 |
| JP2008533386A (ja) | 2008-08-21 |
| DE102005012941A1 (de) | 2006-09-28 |
| EP1864015B1 (de) | 2009-05-20 |
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