EP1320677B1 - Ensemble soupape - Google Patents

Ensemble soupape Download PDF

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Publication number
EP1320677B1
EP1320677B1 EP01974283A EP01974283A EP1320677B1 EP 1320677 B1 EP1320677 B1 EP 1320677B1 EP 01974283 A EP01974283 A EP 01974283A EP 01974283 A EP01974283 A EP 01974283A EP 1320677 B1 EP1320677 B1 EP 1320677B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve arrangement
arrangement according
pressure
pressure accumulator
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.)
Expired - Lifetime
Application number
EP01974283A
Other languages
German (de)
English (en)
Other versions
EP1320677A1 (fr
Inventor
Wolfgang Scheibe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOrange GmbH
Original Assignee
LOrange GmbH
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Filing date
Publication date
Application filed by LOrange GmbH filed Critical LOrange GmbH
Publication of EP1320677A1 publication Critical patent/EP1320677A1/fr
Application granted granted Critical
Publication of EP1320677B1 publication Critical patent/EP1320677B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding 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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/02—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means with fuel-heating means, e.g. for vaporising
    • 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
    • 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
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/005—Pressure relief valves
    • 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
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/005—Pressure relief valves
    • F02M63/0052—Pressure relief valves with means for adjusting the opening pressure, e.g. electrically controlled

Definitions

  • the invention relates to a valve arrangement for a working with accumulator pressure internal combustion engine according to the preamble of claim 1.
  • a valve arrangement of the aforementioned type is known from DE 196 45 243 C2.
  • This valve assembly includes in conjunction with a pressure accumulator between this, in training as a so-called common rail, and a low pressure space lying outflow valve, which is open for the circulation of heated heavy oil during the downtime of the internal combustion engine and when starting the internal combustion engine and during their operation closed is.
  • the valve member of the discharge valve is loaded via a pressurized control medium in the direction of its closed position and held in this closed position, against the pending pressure in the pressure accumulator and against the force of an acting in the opening direction of the valve member spring, the Ventilgüed at Auslall of Control pressure in the open position presses.
  • valve assembly for a working with accumulator pressure internal combustion engine is shown, in which the pressurized accumulator in operation under pressure operating pressure accumulator associated with a pressure controlled Abströmventil with lying in Abströmweg valve member which is open when not operated internal combustion engine and closed when the internal combustion engine is operated , During startup, the valve assembly is opened to operate the engine with fuel at a low pressure level.
  • the invention has for its object to improve a valve assembly of the type mentioned in terms of maintaining the closed position of the closing member.
  • valve arrangement according to claim 1.
  • This uses in a direct way in the accumulator under operating pressure pending injection medium to pressurize the valve member of the discharge valve in the outflow direction and thereby fix in its closed position.
  • the transfer to the closed position can be initiated or carried out by pressurizing an actuator piston connected to the valve member, or via another Adjustment device, such as a magnetic actuator, as in this way appropriate closing forces must be applied only briefly.
  • the starting voltage can also be used to actuate this magnet, for example, in an electric motor to start, in both cases a combined action of the closing member in the direction of its closed position connected to the charging of the pressure accumulator during the starting process, with increasing pressure in the pressure accumulator is accompanied by pressurization of the valve member in the direction of its closed position, so that the required sealing forces no longer need to be applied via the actuator at the onset of regular operation of the engine and with the completion of the starting process on the load of the valve member in the direction can be dispensed with its closed position by the actuator.
  • valve assembly is thus kept in the closed solution in the solution according to the invention without further switching elements in operation, and for the starting process, it requires only the diversion of a negligible proportion of the respective starting energy for actuating the actuator.
  • the invention is not bound to solutions and limited to solutions in which actuator and startup operation to the same power source, whether it is electrical power or compressed air generation, bound.
  • an inventive construction of the discharge valve is expedient in which this is constructed on the housing side substantially of overlapping cylindrical bushings or sleeve parts, so that can be used on simple turned parts.
  • a pressure accumulator 1 in the form of a so-called common rail is shown, which is sealed in relation to a valve arrangement 2 by a bushing 3 which is the carrier of a bush neck 4 which serves as a receptacle for a discharge valve 5.
  • the outflow valve 5 comprises, in particular Figure 2 shows, a sealing cone 6 is clamped with a union nut 7 against a ring projection 9 of an intermediate piece 8, which is coaxial with the sealing cone 6 and the transition from the annular shoulder 9 on the sealing cone 6 together with this one Valve chamber 10 limited, in which the valve head 11 of a valve member 40 is located.
  • the valve head 11 is the end to a valve stem 12 of the valve member 40 which is screwed coaxially against a piston rod 13 which passes through the guide neck 14 of the head portion 15 of the discharge valve 5, which in turn a guide bore 16 of the intermediate piece 8 is located, against opposite to the annular shoulder 9, wherein the intermediate piece 8 adjacent to the annular shoulder 9 has an enlarged diameter radial collar 17.
  • the intermediate piece 8 thus forms a receiving sleeve 18 for the guide neck 14, wherein the outer diameter of the receiving sleeve 18, as well as the outer diameter of the annular shoulder 9, is smaller than the outer diameter of the radial collar 17, via which the intermediate piece 8 in the socket neck 4th is guided.
  • the head part 15 is provided with a stop collar 19, which is associated with the free end face of the receiving sleeve 18 as a counterpart.
  • an intermediate sleeve 20 which is seated axially against the radial collar 17 and radially to the receiving sleeve 18, with dichtendem connection to this in the Radial collar 17 remote upper region, an annular channel 21 defines, the radial depth of the annular channel 21 in the embodiment is determined by the fact that the receiving sleeve 18, as shown in Figure 2, has a reduced outer diameter area 22. If a larger radial depth of the annular channel 21 is desired, this can be achieved by a corresponding diameter widening in the inner diameter of the intermediate sleeve 20.
  • the pressure accumulator 1 is provided in its wall with an outflow bore 23, which widens radially outward to form a receiving cone 24 to which the sealing cone 6 corresponds.
  • the sealing cone 6 is axially clamped in the receiving cone 24, wherein the corresponding clamping is achieved via the intermediate sleeve 20, formed over a portion of a threaded sleeve, in the socket neck 4, as indicated at 25 as a screw, is screwed and axially on the Radial collar 17 of the intermediate piece 8 is supported, which in turn acts on the annular shoulder 9 axially the sealing cone 6, wherein the sealing of the im Transition from the annular shoulder 9 formed on the sealing cone 6 valve chamber 10 is ensured by axial clamping of the sealing cone 6 against the annular shoulder 9 via the nut 7.
  • the sealing cone 6 is provided starting from the valve chamber 10 with a bore 26 which corresponds to the bore 23.
  • the head part 15 is further concentric with the piston rod 13, an actuator 41 associated with a pressure chamber 32 in which a control piston 33 is arranged which is spring-loaded in the direction of the valve chamber 10 in the embodiment via a spring 34.
  • the pressure chamber 32 is a pressure side Assigned supply port 35 through which the adjusting piston 33 can be acted upon against the force of the spring 34 with pressurized fluid; being used in conjunction with large-piston internal combustion engines, which are started via compressed air, in particular compressed air.
  • the head part 15 is associated with a cover-like cover, which is designated 36 and which also makes it possible to use the piston 33 in the head part 15 on the cover side next to the spring.
  • This can in turn also be connected via a screw or the like, starting from the cover side with the piston rod 13.
  • This is in turn screwed against the valve stem 12, wherein the screw is preferably in an axially below the guide neck 14 open area of the receiving bore 16, so that the screwing can be made larger in diameter than the guide neck 14 passing through the receiving bore for the piston rod thirteenth
  • the outflow valve 15 thus forms an easy-to-install unit, which can also be clamped over the intermediate sleeve 20 relative to the socket 4 via the screw 25, wherein the indicated in the figures seals between the individual parts illustrate that the overall structure described Good conditions for a simple design of the mutual seals allows.
  • valve head 11 is shown in the illustrations according to Figures 1 and 2 in the valve chamber 10 in its lower, predetermined by the load on the spring 34 opening position in which the support against the force of the spring 34 by engagement with a conical boundary surface 38 of the valve chamber 10 takes place, which lies on transition to the bore 26.
  • transverse grooves 39 or the like recesses are provided which in the illustrated support position relative to the boundary surface 38, which corresponds to an opening position of the discharge valve, the connection of the bore 26 via the valve chamber 10 to the channels 27 and from there to the drain-side supply connection 31st release. If the actuating piston 33 is acted upon by the supply port 35 with pressurized fluid, the valve head 11 is moved into its upper stop position, not shown, and delimits the valve chamber 10 sealingly against the discharge side.
  • valve head 11 Is now within the pressure accumulator 1 pressure, so the valve head 11 is acted upon in the direction of its closed position, so that with appropriate tuning acting in the opening direction of the valve head 11 spring 34 on the pressure in the pressure accumulator 1 dependent, the valve head 11th in its closed position in Closing direction, so in the opposite direction loading pressure a limit pressure can be set, in which the valve head 11 is held above the pressure in the accumulator 1 pending pressure in its closed position.
  • the outflow valve 5 falls back into its open position as soon as the pressure in the pressure accumulator 1 falls below a predetermined lower limit, so that a safety function is ensured.
  • valve arrangement of the above-described type in particular also the rinsing operation required in the case of combustion engines operated with heavy oil can be carried out in a favorable manner.
  • the valve head In this phase of operation, the valve head is in its open position and the heated flushing medium, in particular the heated heavy oil can circulate through the injection system and thereby raise it to a temperature level at which the start and operation of the internal combustion engine is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Safety Valves (AREA)
  • Valve Device For Special Equipments (AREA)
  • Magnetically Actuated Valves (AREA)
  • Compressor (AREA)

Claims (19)

  1. Agencement de soupape pour un moteur à combustion interne fonctionnant avec une pression de suralimentation, dans lequel on associe à l'accumulateur de pression (1) sollicité lors du fonctionnement par du fluide d'injection à la pression de fonctionnement, notamment du carburant diesel ou de l'huile lourde, une soupape d'échappement (5) commandée en pression, avec un organe de soupape (40) situé dans la trajectoire de l'échappement, laquelle est ouverte pour permettre la circulation de fluide d'injection lorsque le moteur à combustion interne ne fonctionne pas et qui est fermée au démarrage du moteur à combustion interne ainsi que lorsque le moteur à combustion interne fonctionne,
    caractérisé en ce que
    l'organe de soupape (40) de la soupape d'échappement (5) se ferme dans la direction d'échappement et est maintenu dans la position fermée par le biais du fluide d'injection à la pression de fonctionnement dans l'accumulateur de pression (1).
  2. Agencement de soupape selon la revendication 1, caractérisé en ce que l'organe de soupape (40) de la soupape d'échappement (5) est sollicité par ressort dans la direction d'ouverture.
  3. Agencement de soupape selon la revendication 1 ou 2, caractérisé en ce qu'une commande de réglage commutant l'organe de soupape (40) dans la position de fermeture est associée à l'agencement de soupape.
  4. Agencement de soupape selon la revendication 3, caractérisé en ce que la commande de réglage (41) peut être sollicitée par un fluide.
  5. Agencement de soupape selon la revendication 4, caractérisé en ce que la commande de réglage (41) peut être sollicitée pneumatiquement.
  6. Agencement de soupape selon la revendication 4 ou 5, caractérisé en ce que la commande de réglage (41) comprend un piston de commande (33) qui est sollicité par ressort sur le côté opposé à l'espace de pression (32).
  7. Agencement de soupape selon l'une quelconque des revendications 4 à 6, caractérisé en ce que l'espace de pression (32) avec le guidage pour le piston de commande (33) ainsi que les raccords d'alimentation du côté de l'entrée et de la sortie (31, 35) est associé à la partie de tête (15) de l'agencement de soupape (2).
  8. Agencement de soupape selon la revendication 7, caractérisé en ce que la partie de tête (15) est connectée à l'accumulateur de pression (1) par le biais de sa gorge de guidage (14) tournée vers l'accumulateur de pression (1) dans le cas d'une forme de base de section transversale en forme de T, notamment en forme de champignon.
  9. Agencement de soupape selon la revendication 8, caractérisé en ce que la gorge de guidage (14) est traversée par la tige de piston (13) se trouvant dans le passage allant à l'organe de soupape (40).
  10. Agencement de soupape selon la revendication 9, caractérisé en ce que l'organe de soupape (40) se terminant dans la tête de soupape (11) est connecté par le biais de la tige de soupape (12) à la tige de piston (13).
  11. Agencement de soupape selon la revendication 10, caractérisé en ce que la tête de soupape (11) se trouve dans la région d'une chambre de soupape (10) qui entre au niveau de son passage vers un accumulateur de pression (1), dans un joint conique (6).
  12. Agencement de soupape selon la revendication 11, caractérisé en ce que le joint conique (6) vient en prise dans un cône d'étanchéité (24) qui est associé à la paroi de l'accumulateur de pression (1) et qui présente un alésage de connexion (26) vers l'accumulateur de pression (1).
  13. Agencement de soupape selon la revendication 11 ou 12, caractérisé en ce que l'ancrage de la soupape d'échappement (5) à une partie tubulaire de l'accumulateur de pression (1), notamment à un accumulateur de pression tubulaire, s'effectue par le biais d'une douille (3) entourant la partie tubulaire, qui se termine par un col de douille (4) qui forme un logement pour la soupape d'échappement (5) dans le passage entre le joint conique (6) et la gorge de guidage (14).
  14. Agencement de soupape selon la revendication 13, caractérisé en ce que la gorge guidage (14) vient en prise dans un alésage (16) d'une pièce intermédiaire (8) qui présente à l'opposé de la gorge de guidage (14) un insert annulaire (9) contre lequel est serré le joint conique (6).
  15. Agencement de soupape selon la revendication 13 ou 14, caractérisé en ce que l'insert annulaire (9) et le joint conique (6) sont connectés par le biais d'un écrou d'accouplement (7) vissé sur l'insert annulaire (9).
  16. Agencement de soupape selon la revendication 15, caractérisé en ce qu'à l'opposé de l'écrou d'accouplement (7), la pièce intermédiaire (8) est entourée par un manchon intermédiaire (20) et en ce que le manchon intermédiaire (20) délimite contre la pièce intermédiaire (8) un canal axial, notamment un canal annulaire (21).
  17. Agencement de soupape selon la revendication 16, caractérisé en ce que la pièce intermédiaire (8), à l'opposé de l'insert annulaire (9), présente une zone (22) de diamètre en retrait par rapport à l'épaulement radial (17), qui est recouverte par le manchon intermédiaire (20).
  18. Agencement de soupape selon la revendication 16 ou 17, caractérisé en ce que le manchon intermédiaire (20) vient en prise dans la région de recouvrement de la pièce intermédiaire (8) et du col de douille (4).
  19. Agencement de soupape selon la revendication 16, 17 ou 18, caractérisé en ce que la connexion d'écoulement de la chambre de soupape (10) au raccordement d'alimentation (31) du côté de la sortie, associé à la partie de tête (15) de la soupape d'échappement (5), s'étend par le biais du canal annulaire (32) entre le manchon intermédiaire (20) et la pièce intermédiaire (8).
EP01974283A 2000-09-25 2001-09-22 Ensemble soupape Expired - Lifetime EP1320677B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10047805A DE10047805B4 (de) 2000-09-25 2000-09-25 Ventilanordnung
DE10047805 2000-09-25
PCT/EP2001/010967 WO2002025099A1 (fr) 2000-09-25 2001-09-22 Ensemble soupape

Publications (2)

Publication Number Publication Date
EP1320677A1 EP1320677A1 (fr) 2003-06-25
EP1320677B1 true EP1320677B1 (fr) 2006-03-15

Family

ID=7657793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01974283A Expired - Lifetime EP1320677B1 (fr) 2000-09-25 2001-09-22 Ensemble soupape

Country Status (5)

Country Link
EP (1) EP1320677B1 (fr)
JP (1) JP3768189B2 (fr)
AT (1) ATE320556T1 (fr)
DE (2) DE10047805B4 (fr)
WO (1) WO2002025099A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8839764B2 (en) 2008-10-10 2014-09-23 Robert Bosch Gmbh Fuel supply system for heavy oil common-rail injection systems

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005012940A1 (de) * 2005-03-21 2006-09-28 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
AT510464B1 (de) * 2010-09-27 2012-07-15 Bosch Gmbh Robert Ventil mit druckbegrenzungsfunktion
AT511252B1 (de) * 2011-04-08 2013-10-15 Bosch Gmbh Robert Spülventil für common-rail schweröl- einspritzsysteme

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3298968B2 (ja) * 1993-03-09 2002-07-08 株式会社デンソー 燃料噴射ポンプ
US5558068A (en) * 1994-05-31 1996-09-24 Zexel Corporation Solenoid valve unit for fuel injection apparatus
DE19645243C2 (de) * 1996-11-02 1998-10-29 Orange Gmbh Druckspeicher-Einspritzvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8839764B2 (en) 2008-10-10 2014-09-23 Robert Bosch Gmbh Fuel supply system for heavy oil common-rail injection systems

Also Published As

Publication number Publication date
EP1320677A1 (fr) 2003-06-25
ATE320556T1 (de) 2006-04-15
WO2002025099A1 (fr) 2002-03-28
JP2004509283A (ja) 2004-03-25
DE10047805A1 (de) 2002-04-25
DE50109231D1 (de) 2006-05-11
DE10047805B4 (de) 2005-04-21
WO2002025099A8 (fr) 2002-06-06
JP3768189B2 (ja) 2006-04-19

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