EP2929172A1 - Verfahren und vorrichtung zum montieren und befüllen eines hydraulischen kopplermoduls - Google Patents
Verfahren und vorrichtung zum montieren und befüllen eines hydraulischen kopplermodulsInfo
- Publication number
- EP2929172A1 EP2929172A1 EP13798293.0A EP13798293A EP2929172A1 EP 2929172 A1 EP2929172 A1 EP 2929172A1 EP 13798293 A EP13798293 A EP 13798293A EP 2929172 A1 EP2929172 A1 EP 2929172A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupler
- container
- valve piston
- piston
- coupler body
- 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
- 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
- F02M61/167—Means for compensating clearance or thermal expansion
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
- F02M2200/705—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for filling or emptying hydraulic chamber, e.g. for compensating clearance or thermal expansion
-
- 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
-
- 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
Definitions
- the invention relates to a method for mounting and filling a hydraulic coupler module with the features of the preamble of claim 1. Furthermore, the invention relates to a device for carrying out the method.
- Hydraulic coupler modules are used, for example, in fuel injection valves for injecting fuel into the combustion chamber of an internal combustion engine. They serve to couple an injection valve member with an actuator, in particular a piezoelectric actuator, for actuating the injection valve member.
- the hydraulic coupler module can be designed such that in this case a translation of the actuator force and / or the Aktorhubes is effected. Furthermore, thermally induced changes in length of the actuator can be compensated via the hydraulic coupler module.
- Coupler volume may be located, as it is compressible and therefore would affect the power transmission from the actuator to the injection valve member.
- the transmitted force decreases, resulting in a reduction in the injection quantity.
- the injection quantity is equal to zero, so that the fuel injection valve no longer fulfills its function. It is therefore already in the assembly of a hydraulic coupler module to ensure that the coupler volume is completely filled with the coupler medium and contains no air bubbles. The same applies in the case of repair when disassembled and emptied hydraulic coupler modules are reassembled and filled.
- the present invention is therefore based on the object of specifying a method and a device by means of which hydraulic coupler modules can be filled in a process-reliable and cost-effective manner and can be filled without air.
- a coupler piston and a valve piston When mounting and filling a hydraulic coupler module, a coupler piston and a valve piston are inserted into a hollow cylindrical coupler body to form a defined coupler volume, and the coupler volume formed between the two pistons is filled with a coupler medium.
- the inventive method provides that at least the valve piston and the coupler body are pre-assembled and used with the valve piston in advance in a receiving bore of a container of a device for mounting and filling a hydraulic coupler module and then the receiving bore via a arranged in the bottom region of the container inlet bore with the Coupling medium is flooded. When flooding existing air is displaced upwards in the receiving bore and / or in the coupler body and the coupler body is completely filled with the coupler medium.
- the inlet bore is therefore arranged in the bottom region of the container or in the region of the lower end of the receiving bore.
- the container is set up to carry out the method such that the receiving bore is vertically aligned and open at the top. From above, the valve piston and the coupler body are then inserted.
- the coupler medium penetrates the clearance between the valve piston and the coupler body into the coupler volume.
- the coupler medium runs over the edge of the coupler body from above into the
- Coupler body without trapping air in the coupler body.
- the inlet bore of the container is preferably connectable to a hose, which can be charged with the coupler medium and further preferably via a valve to open and close.
- the inlet bore and / or the hose is preferably preceded by a fine filter.
- the coupler piston is pressed into the coupler body, wherein a press die of the device for mounting and filling a hydraulic coupler module is preferably used for the injection.
- the coupler piston is pressed into the coupler body until a defined coupler volume is formed between the coupler piston and the valve piston.
- Coupler body existing Kopplermediums via a between the
- Coupler piston and the coupler body existing game displaced The same applies to any still trapped air, so that after installation, the defined coupler volume is completely filled with the coupler medium.
- the ram can be moved back after installation and the assembled and filled coupler module can be removed for further use of the receiving bore of the container.
- Coupler body disposed in the receiving bore of the container between the valve piston and the coupler body a spring.
- the spring is used for later biasing of the valve piston and is for this purpose supported on the one hand on the valve piston and on the other hand on the coupler body.
- the valve piston and / or the coupler body may or may have a radially extending shoulder.
- the spring is preferably relieved of pressure in order to prevent the spring from relaxing after the assembly has taken place and creating a negative pressure in the coupler volume which can cause air to be sucked in.
- at least the coupler body is fixed in a predetermined axial position. The fixation ensures that when flooding the mounting hole of the
- the valve piston is further fixed.
- the fixation of the valve piston in a predetermined axial position ensures the formation of a defined Kopperervolumens. Furthermore, it can be ensured via a fixation of the coupler body and the valve piston, that the spring arranged between the coupler body and the valve piston is relaxed.
- an insert for receiving the at least partially preassembled coupler module comprising the valve piston and the coupler body, be inserted into the container of the device for mounting and filling a hydraulic coupler module and the at least partially preassembled coupler module before or after inserting the insert is inserted into the container in the insert.
- the insertion of the at least partially preassembled coupler module in the container on the other hand can be guaranteed by the use of compliance with a given mounting dimension.
- the insert in turn allows a simple design of the receiving bore of the container, since annular paragraphs to support the valve piston and / or the Koppler stressess are unnecessary.
- the insert further eliminates the need for additional spacers, such as an insertable spacer.
- a device for carrying out the method according to the invention, which according to the invention comprises a container with a receiving bore for receiving the valve piston and the coupler body, wherein in the bottom region of the container an inlet bore for flooding the receiving bore is arranged with the coupler medium.
- the inlet bore in the region of the lower end of the receiving bore opens into this. Because this ensures when flooding the mounting hole that the coupler medium is pressed from below on the game between the valve piston and the coupler body in the coupler volume and the existing air escapes upwards.
- the receiving bore of the container is designed as a stepped bore and has at least one preferably annular shoulder for axially fixing the position of the coupler body and / or the valve piston.
- the coupler body and / or the valve piston also preferably has or have a counter-shaped shoulder with which the coupler body or the valve piston is supported on the shoulder of the receiving bore when the receiving bore is flooded and / or when the coupler piston is pressed in.
- a piston for lifting the valve piston directly or indirectly is received in a liftable manner in the receiving bore of the container.
- a spacer to adjust the axial position of the valve piston with respect to the coupler body can be inserted between the valve piston and the piston stroke stroke of the device, a spacer to adjust the axial position of the valve piston with respect to the coupler body.
- the piston has a collar portion which can be brought into contact with a preferably annular shoulder of the receiving bore for axially fixing the position of the piston. In installation with the paragraph of the receiving bore of the piston is fully retracted. In this position, the piston is when pressing the coupler piston in the coupler body and serves in this way as an abutment.
- Valve piston and the coupler body in the receiving bore the piston can be extended to facilitate the partial assembly.
- the inlet bore opens into the receiving bore via an inner peripheral surface of the container delimiting the receiving bore.
- Zulaufbohrung is therefore preferably designed as a radial bore.
- the height position of the inlet bore is preferably determined such that when the piston is fully retracted, the mouth region of the inlet bore lies directly above the piston. This ensures that the air present in the receiving bore is completely displaced upward when flooded with the coupler medium.
- the container has an overflow for collecting the excess coupler medium.
- the coupler body is completely flooded with the coupler medium, so that the coupler medium during pressing of the coupler piston in the Coupling piston overflows and is caught in the overflow of the container.
- the overflow is connected to a drainage bore and / or the inlet bore. The excess coupler medium can be collected in this way and possibly reused.
- the device For pressing the coupler piston into the coupler body, the device preferably comprises a press ram, by means of which the coupler piston inserted into the coupler body can be acted upon by a pressure force.
- the coupler piston By means of the pressing force of the press ram, the coupler piston can be moved precisely into a predefined axial position with respect to the coupler body and / or the valve piston, so that a defined coupler volume is formed.
- the device comprises an insert for receiving the valve piston and the coupler body, which can be inserted into the receiving bore of the container.
- Coupler bodies can then be used as a preassembled unit in the insert, before or after it has been inserted into the container.
- the insert for receiving the valve piston and the coupler body has at least one radially extending shoulder for axially fixing the position of the valve piston and / or the coupler body.
- the insert for receiving the valve piston and the coupler body has a collar by means of which the insert can be fixed in position in the axial and / or radial direction with respect to the container.
- the insert is preferably inserted into the receiving bore of the container such that it is supported via the collar on a preferably annular shoulder of the container.
- the annular shoulder can be, for example, an annular end face of a hollow-cylindrical end section of the container, which is encompassed by the collar.
- the collar need not be circumferentially formed, but may comprise a plurality of collar sections, which are preferably arranged at the same angular distance from one another.
- the insert for receiving the valve piston and the coupler body has at least one opening extending over a partial circumference. This means that the insert is not designed as a closed body.
- Openings provided, which are arranged at the same angular distance from each other.
- the wall pieces arranged between the openings are preferably provided in each case with a collar or a collar section for hooking the insert into the container.
- FIG. 1 shows a schematic longitudinal section through the device according to the invention with a partially assembled hydraulic coupler module inserted therein
- FIG. 2 shows a perspective view of a device according to the invention with an insert for receiving a partially preassembled coupler module
- FIG. 3 shows a perspective view of the device according to FIG. 2 with the partially preassembled coupler module inserted therein.
- the device shown in FIG. 1 comprises a container 7 with a central receiving bore 6, which is designed as a stepped bore and in which a piston 12 is received in a liftable manner.
- the piston 12 has at its upper end a collar portion 13 formed as a head plate, on which a spacer 19 is placed.
- the collar portion 13 is engageable with an annular shoulder 14 of the receiving bore 6, when the piston 12 is retracted.
- the outer diameter of the spacer 19 is smaller than the outer diameter of the collar portion 13 of the piston 12 is selected so that when retracted piston 12 a around the spacer 19 around remaining annular space is formed.
- the receiving bore 6 In this annular space, which is part of the receiving bore 6, opens a formed as a radial bore Zulaufboh- tion 8.
- the mouth of the inlet bore 8 is therefore in the range of the The height of the inlet bore 8 is set such that the mouth is located immediately above the collar portion 13 of the piston 12 when it is fully retracted, that is, the collar portion 13 on the annular shoulder 14 of the receiving bore 6 is present.
- the receiving bore 6 can be filled with a coupling medium.
- a further annular shoulder 11 is formed, which limits the annulus and the support of a hollow cylindrical coupler body 5 inserted into the receiving bore of a hydraulic coupler module 1 to be assembled and filled.
- the receiving bore 6 is widened, wherein the inner diameter of the receiving bore 6 above the paragraph 11 is adapted to the outer diameter of the coupler body 5.
- a receiving bore 6 bordering annular overflow 16 is formed, which is connected via a Abiaufbohrung 17 and another radial bore with the receiving bore 6 and / or with a disposal line (not shown).
- overflow 16 accumulates during assembly and filling of the hydraulic coupler module 1 excess
- a further component of the device is formed by a press die 9 for pressing in a coupler piston 3 of the hydraulic coupler module 1 into the coupler body 5.
- the offset depth is predetermined by a defined coupler volume 2 which is formed in the coupler body 5 between the coupler piston 3 and a valve piston 4.
- the coupler module 1 comprises, in addition to the hollow cylindrical coupler body 5, the valve piston 4 and the coupler piston 3, a first spring 10 which surrounds the valve piston 4 and on the one hand on the valve piston 4, on the other hand
- Coupler body 5 is supported, and a tube spring 18 which surrounds the coupler body 5.
- the spring 10 and the coupler body 5 inclusive the tube spring 18 is pushed onto the valve piston 4 and then used together in the receiving bore 6 of the container 7.
- the liftable piston 12 accommodated in the receiving bore 6 is extended, so that the valve piston 4 comes into abutment with the spacer disk 19 resting on the piston 12 (see FIG. 1).
- the piston 12 is then retracted until the collar portion 13 of the piston 12 comes to rest on the annular shoulder 14 of the receiving bore 6.
- the piston 12 in this way seals the receiving bore 6 downwards.
- the formed in the container 7 inlet bore 8 now opens directly above the piston 12 in the receiving bore 6.
- the axial position of the valve piston 4 relative to the coupler body 5 can be fixed. This is presently set such that when retracted piston 12, the spring 10 inserted between the valve piston 4 and the coupler body 5 is relaxed.
- Coupling medium for example test oil, flooded.
- the inlet bore 8 is for this purpose connected to a hose line (not shown), in which a valve (not shown) is arranged to control the feed rate.
- the valve is preceded by a fine filter (not shown), in order to prevent particles from being introduced into the hydraulic coupler module via the coupler medium.
- the receiving bore 6 is flooded via the inlet bore 8 from below, so that the existing air in the receiving bore 6 is displaced upwards.
- the coupler medium is pressed into the coupler body 5 via the clearance present between the valve piston 4 and the coupler body 5, which then becomes brimful with the coupler body 5
- the coupler piston 3 is inserted together with a shim, not shown here in the coupler body 5 and pressed by means of the press ram 9 in the coupler body 5.
- the excess coupler medium exiting via the edge of the coupler body 5 is collected in the overflow 16 of the container 7, collected and removed via a drainage bore 17.
- the press ram 9 or the pressure force of the press ram 9, which acts on the coupler piston 3, is adjusted such that a predetermined amount of the coupler medium remains between the coupler piston 3 and the valve piston 4. In this way, a hydraulic coupler module 1 is created with a defined coupler volume 2, which also has no air pockets.
- the proposed device for mounting and filling a hydraulic coupler module has the advantage that the mounting and filling can be automated. This ensures high process reliability and cost-effective installation.
- FIG. 2 and 3 there is shown another preferred embodiment of the invention modified to include a basket-like insert 20 for receiving a semi-preassembled hydraulic coupler module 1 comprising a valve piston 4 and a coupler body 5.
- the basket-like insert 20 is not formed as a closed body, but has two openings 23 which are opposite each other.
- the openings 23 are bounded by wall pieces 24, at the end of each of which a collar portion is designed to form a collar 22.
- the collar 22 allows the basket-like insert 20 to be suspended in the container 7, the insert 20 being supported by the collar 22 at the edge of the container 7
- the collar 22 of the insert 20 surrounds the edge of the container 7, so that an axial and radial positional fixation of the insert 20 and the partially pre-assembled coupler module 1 accommodated in relation to the container 7 can be achieved.
- the insert 20 thus ensures compliance with a predetermined mounting dimension and makes additional spacers, such as a spacer 19 according to the embodiment of Figure 1, dispensable.
- the formation of a radially extending shoulder 21 in the region of the inner peripheral surface of the wall pieces 24, which effect an axial positional fixation of the partially preassembled coupler module 1, is expedient.
- the liftable piston 12 is present a rod 12 'inserted into the container 7. The rod 12 'is connected to the container 7 via a screw connection.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Automatic Assembly (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012222478 | 2012-12-06 | ||
| DE201310222506 DE102013222506A1 (de) | 2012-12-06 | 2013-11-06 | Verfahren und Vorrichtung zum Montieren und Befüllen eines hydraulischen Kopplermoduls |
| PCT/EP2013/074397 WO2014086589A1 (de) | 2012-12-06 | 2013-11-21 | Verfahren und vorrichtung zum montieren und befüllen eines hydraulischen kopplermoduls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2929172A1 true EP2929172A1 (de) | 2015-10-14 |
| EP2929172B1 EP2929172B1 (de) | 2016-10-26 |
Family
ID=50778350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13798293.0A Active EP2929172B1 (de) | 2012-12-06 | 2013-11-21 | Verfahren und vorrichtung zum montieren und befüllen eines hydraulischen kopplermoduls |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2929172B1 (de) |
| CN (1) | CN104822934B (de) |
| DE (1) | DE102013222506A1 (de) |
| WO (1) | WO2014086589A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6766965B2 (en) * | 2001-08-31 | 2004-07-27 | Siemens Automotive Corporation | Twin tube hydraulic compensator for a fuel injector |
| DE10147483B4 (de) * | 2001-09-26 | 2005-05-19 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
| DE10151688A1 (de) * | 2001-10-19 | 2003-04-30 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
| US7500648B2 (en) * | 2003-02-27 | 2009-03-10 | Robert Bosch Gmbh | Fuel-injection valve |
| DE10333696A1 (de) * | 2003-07-24 | 2005-02-24 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung |
| EP1881189B1 (de) * | 2006-07-21 | 2014-10-29 | Continental Automotive GmbH | Kolben-Zylinder-Aggregat und hydraulisches kompensationsvorrichtung |
-
2013
- 2013-11-06 DE DE201310222506 patent/DE102013222506A1/de not_active Withdrawn
- 2013-11-21 EP EP13798293.0A patent/EP2929172B1/de active Active
- 2013-11-21 WO PCT/EP2013/074397 patent/WO2014086589A1/de not_active Ceased
- 2013-11-21 CN CN201380063800.1A patent/CN104822934B/zh active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014086589A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104822934B (zh) | 2017-08-11 |
| DE102013222506A1 (de) | 2014-06-12 |
| CN104822934A (zh) | 2015-08-05 |
| WO2014086589A1 (de) | 2014-06-12 |
| EP2929172B1 (de) | 2016-10-26 |
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