EP1576280B1 - Vorrichtung mit zwischen zwei körpern liegender dichtebene - Google Patents

Vorrichtung mit zwischen zwei körpern liegender dichtebene Download PDF

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Publication number
EP1576280B1
EP1576280B1 EP03767803A EP03767803A EP1576280B1 EP 1576280 B1 EP1576280 B1 EP 1576280B1 EP 03767803 A EP03767803 A EP 03767803A EP 03767803 A EP03767803 A EP 03767803A EP 1576280 B1 EP1576280 B1 EP 1576280B1
Authority
EP
European Patent Office
Prior art keywords
pressure
sealing plane
support zones
bodies
support
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
EP03767803A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1576280A1 (de
Inventor
Alexander Kuschel
Damrong Photien
Horst Ressel
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LOrange GmbH filed Critical LOrange GmbH
Publication of EP1576280A1 publication Critical patent/EP1576280A1/de
Application granted granted Critical
Publication of EP1576280B1 publication Critical patent/EP1576280B1/de
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
    • 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
    • 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

Definitions

  • the invention relates to a device with lying between two bodies sealing plane, in particular a high-pressure injection device for internal combustion engines with lying between two modules sealing plane, according to the preamble of claim 1, such as. in document WO 00/60 233 A.
  • High-pressure fuel injectors for internal combustion engines operate at extremely high pressures and, depending on the field of application, are very crowded in terms of volume, as a rule in their high-pressure and low-pressure lines passing over their length, which are guided by sealing levels lying between axially successive structural units, in particular modules , which are formed by frontal contact surfaces of the units or modules.
  • the units or modules can be clamped against each other via union nuts or the like, especially in larger units but also on this enforcing tie rods, so that in the sealing plane, already conditioned by the quite different, in the units passing through the units channels prevailing pressures for the mutual Sealing different surface pressures must be given. In this distribution, these are due to the nature of the voltage introduction but not feasible in practice, so that the interpretation is carried out on the maximum required surface pressures, with the effect of a corresponding oversizing and partially unnecessarily high surface pressure.
  • the invention has for its object to provide a solution, as in the contact surfaces of the sealing plane a functional requirements corresponding surface pressure can be achieved.
  • an embodiment according to claim 1 according to which the surface pressure in a respective support zone is determined by the depth of the region withdrawn relative to the sealing plane adjacent to the support zone, so that a further parameter for influencing the surface pressure in the respective support zone constructively available stands, which, based on the area, of the size of the surface of the sealing plane defining end faces is virtually independent and possibly even allows training with partially reduced in the area support zones.
  • sealing abutment-forming support zones such as, for example, channel cross-sections defining support zones, can be reduced in coordination with the particular pressures to be controlled for the pressure channels using the material elasticity by appropriate depth of the areas withdrawn in the surface pressure.
  • the solution according to the invention offers the possibility of determining the surface pressure in that the depth of the recessed area is kept small in order to achieve a larger surface pressure, but the depth of the recessed area is increased in order to achieve a lower surface pressure.
  • Starting from withdrawn areas between mutually adjacent channels and these sealingly enclosing support zones can be over different depth of the adjacent the respective support zone lying portions of the recessed areas so targeted realize even in a small space different surface pressures, regardless of the fact that for other reasons the support zones in their areal extent, so in the size of their area as well as possibly in their surface contour, are given.
  • the force flow in the material can thus be directed so that a surface pressure corresponding to the functional requirements is achieved at the contact surfaces of the body, wherein the functional requirements to be taken into account include not only the sealing function but also supporting functions, for example during assembly, or also other stresses.
  • Abstützzonen are in the invention not only high and / or low-pressure channels enclosing annular areas, but may also be assigned to separate support islands or, for example, in clamping the units or modules via clamping bolts, the clamping bolt to be provided enclosing.
  • the solution according to the invention offers the approach to functionally appropriate adaptation of the surface pressure in each of these support zones, wherein it is within the scope of the invention, Ausstweilzonen formed by opposite the sealing plane withdrawn areas in both of the body to be clamped against each other, or only in one of them, the part of the another body corresponds to a flat contact surface.
  • Abstützzonen which includes targeted targeted cross-sectional Provision may be made, in particular, for areas in which the bodies are to be clamped, but also starting from other accessible surfaces, such as channel inner walls, and for example by grooves, in particular the respective ones Abstützzone undercut grooves can be formed.
  • Such relief grooves can be embodied in particular as grooved grooves and, in particular, also be used as an independent inventive measure for influencing the surface pressure.
  • the representations each start from a same basic structure of a device 1 with two bodies 2 and 3, which abut each other braced over end faces 4 and 5, to form a sealing plane 6, extending from the body 2 and 3 pressure channels 7 and 8 is penetrated, wherein of the pressure channels 7, 8 in the embodiments of the Pressure channel 7 with high pressure and the pressure channel 8 is acted upon by low pressure.
  • the tension of the body 2 and 3 is illustrated by clamping screws 9 and 10, the head side act on the body 2 and the shaft side are anchored against the body 3 by corresponding threaded engagement.
  • the bodies 2 and 3 are modules or structural units of a high-pressure injection device in the form of an injection injector for internal combustion engines, so that, among other things, additional thermal loads result from the intended use.
  • An embodiment of the device 1 known from this field of application in the area of the sealing plane 6 defined by the end faces 4 and 5 is shown in FIG. 3, in which the end face 4 of the body 2 is reduced to support zones 11 to 14 in the support against the end face 5 of the body 3 is that the pressure channels 7, 8 and the clamping screws 9 and 10 receiving bores bounded, bounded by, recessed from the front side 4 areas, in particular enclosed, said areas are annular, shallow depressions 15 to 18, which partially into each other pass.
  • FIGS. 1 and 2 show a solution in which the recessed formed as recesses areas 15 to 18 are varied in depth to the effect that the depth of each withdrawn Area in areas of high surface pressure required small and areas where only lower surface pressures are required, however, is increased.
  • the support zone 11 is enclosed by the pressure channel 7 acted upon by very high pressures of a depression region 16 shallow depth, while the pressure channel 8, which is under lower pressure, is enclosed by a region 17, the measured from the end face 4 depth greater is, so that the support zone 12 forms a channel 8 enclosing ring area, which has a greater height than the support zone 11 defining, the pressure channel 7 enclosing ring area.
  • the elastic deformation area around the pressure channel 8 is greater than around the pressure channel 7, so that a surface pressure adapted to the functional requirements caused by the different pressures results and, accordingly, the clamping forces to be applied can be minimized as a whole.
  • Fig. 2 shows a further possibility for influencing the surface pressures in the Abstützzonen and for matching the surface pressures on the respective functional requirements
  • the relevant embodiment of the invention assumes that the respective support zones to reduce the pressure forces to be transmitted via these, ie to reduce the Surface pressure in these support zones, undercuts are assigned.
  • FIG. 2 shows undercuts 22 and 23 for the tensioning screws 9, 10 associated Abstützzonen 13, 14, wherein Fig. 2 illustrates that the support surfaces formed by undercuts 22, 23, compared to the embodiment of FIG. 1, functional areas 15, 18 correspond with comparatively great depth.
  • FIGS. 1 and 2 thus also illustrate the possibility of being able to make comparatively extensive adjustments with respect to the respective surface pressure by the combination of undercuts with recessed areas, which are matched in depth, and this taking into account an additional influence by the design of the support zones forming webs in their width.
  • the recesses 22, 23 of FIG. 2 are axially undercut to the support zones 13 and 14 and, for example, formed by annular grooves in the respective bore wall of the clamping screw 9 and 10 receiving bore.
  • FIG. 2 furthermore illustrates that corresponding effects with respect to the determination of the surface pressure in respective support zones can also be achieved by making the regions assigned to the support zones correspondingly yielding on the opposite body, this being shown in FIG. 2 for the peripheral support zones 20 and 21
  • Each is illustrated by an undercut 24 and 25, which is arranged circumferentially in the support body 3 at a distance from the end face 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
EP03767803A 2002-12-16 2003-12-13 Vorrichtung mit zwischen zwei körpern liegender dichtebene Expired - Lifetime EP1576280B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10258980 2002-12-16
DE10258980A DE10258980B4 (de) 2002-12-16 2002-12-16 Vorrichtung mit zwischen zwei Körpern liegender Dichtebene
PCT/EP2003/014222 WO2004055358A1 (de) 2002-12-16 2003-12-13 Vorrichtung mit zwischen zwei körpern liegender dichtebene

Publications (2)

Publication Number Publication Date
EP1576280A1 EP1576280A1 (de) 2005-09-21
EP1576280B1 true EP1576280B1 (de) 2006-08-16

Family

ID=32519018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03767803A Expired - Lifetime EP1576280B1 (de) 2002-12-16 2003-12-13 Vorrichtung mit zwischen zwei körpern liegender dichtebene

Country Status (6)

Country Link
EP (1) EP1576280B1 (ko)
JP (1) JP2006517272A (ko)
KR (1) KR20050085656A (ko)
AT (1) ATE336653T1 (ko)
DE (2) DE10258980B4 (ko)
WO (1) WO2004055358A1 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007009166A1 (de) * 2007-02-26 2008-08-28 Robert Bosch Gmbh Flächenfreilegung an Kraftstoffinjektoren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1024183A (fr) * 1950-08-29 1953-03-30 Syndicat Dauphinois D Apprenti Brides autoclaves pour fluide surchauffé à haute pression
LU86209A1 (fr) * 1985-12-12 1987-01-13 Euratom Systeme d'etancheite entre deux brides metalliques
JP3849067B2 (ja) * 1995-03-30 2006-11-22 ボッシュ株式会社 燃料噴射ポンプ
DE19914720B4 (de) * 1999-03-31 2005-10-13 Siemens Ag Kraftstoffeinspritzventil für eine Brennkraftmaschine
DE10102233A1 (de) * 2001-01-19 2002-07-25 Bosch Gmbh Robert Kraftstoffhochdrucksystem für Brennkraftmaschinen

Also Published As

Publication number Publication date
EP1576280A1 (de) 2005-09-21
DE10258980A1 (de) 2004-07-15
ATE336653T1 (de) 2006-09-15
JP2006517272A (ja) 2006-07-20
DE50304690D1 (de) 2006-09-28
WO2004055358A1 (de) 2004-07-01
DE10258980B4 (de) 2006-04-20
KR20050085656A (ko) 2005-08-29

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