EP1290338B1 - Moteur a combustion interne - Google Patents

Moteur a combustion interne Download PDF

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Publication number
EP1290338B1
EP1290338B1 EP01951353A EP01951353A EP1290338B1 EP 1290338 B1 EP1290338 B1 EP 1290338B1 EP 01951353 A EP01951353 A EP 01951353A EP 01951353 A EP01951353 A EP 01951353A EP 1290338 B1 EP1290338 B1 EP 1290338B1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
base body
engine according
sealing element
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
EP01951353A
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German (de)
English (en)
Other versions
EP1290338A2 (fr
Inventor
Heinz-Martin Krause
Stefan Lauter
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP04020734A priority Critical patent/EP1482168B1/fr
Publication of EP1290338A2 publication Critical patent/EP1290338A2/fr
Application granted granted Critical
Publication of EP1290338B1 publication Critical patent/EP1290338B1/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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine

Definitions

  • the invention relates to an internal combustion engine according to the Genus of claim 1.
  • a disadvantage of that known from DE 197 35 665 A1 Sealant is that the bias of the sealing element of the geometry and in particular the diameter of the Location hole depends. Therefore, the known sealant not be used universally, but is for everyone Adapt the mounting hole specifically. In addition, the Do not adjust the preload of the sealing element so that due to aging or due to production technology Fluctuations the prestress is different, which may result in insufficient sealing. Besides, is the seal is directly exposed to the hot exhaust gases, which causes accelerated aging of the sealing ring. In addition, the known sealant especially because of the almost circular cross section of the Sealing element, for penetration of the sealant.
  • Another disadvantage is that due to the radial bias of the sealing element a frictional force occurs, an axial displacement of the sealant counteracts. This will both the installation and removal as also the adjustment of the fuel injector considerably difficult. Due to contamination that affects the Deposit the sealing element, and aging of the sealing element can even happen that the expansion of the Fuel injector is no longer possible or that when removing the fuel injector, the sealing element gets destroyed.
  • a sealant is known from DE 197 43 103 A1, which is designed as a heat protection sleeve.
  • the heat protection sleeve is in a stepped receiving bore of a cylinder head an internal combustion engine used, and encloses a spray-side nozzle body one in the Receiving hole used fuel injector extensively.
  • the tubular heat protection sleeve is on sprayed end bent over to a double position of the To reach sleeve.
  • the double layer of the sleeve is for Sealing one between the nozzle body and the Receiving bore formed annular gap radially biased against the wall of the mounting hole.
  • the nozzle body of the Fuel injector has a conical section, which is inserted into the sleeve and in the area of bent sleeve is jammed in the sleeve.
  • the Fuel injector is also due to one Inclined to the location of the fuel injector fix in the mounting hole.
  • a disadvantage of that known from DE 197 43 103 A1 Fuel injector is that the heat protection sleeve in Area of the double layer of the sleeve between the Nozzle body and the mounting hole is biased. there the problems already discussed above arise with the on or off Removal of the fuel injector.
  • Another The disadvantage is that the position of the fuel injector in the location hole is fixed. Owing to fluctuations in production technology align the axis of the the receiving hole in the fuel injector generally not with the axis of a connector a fuel high pressure line exactly. To the Connect the fuel injector to the High-pressure fuel line is therefore an additional one Intermediate piece required.
  • JP-OS 08-312503 A is already a hold-down device known.
  • the hold-down stops Fuel injector against one in the combustion chamber of the Internal combustion engine prevailing relatively high Combustion pressure low.
  • the hold-down attacks two circumferentially opposite points on a collar of the Fuel injector on, the collar with its Bottom rests on the top of the cylinder head, so that the fuel injector is held.
  • the hold-down known from JP-OS 08-312503 A has the Disadvantage that he only in the axial direction on the Fuel injector acts. With a mechanical The load on the fuel injector can do that Fuel injector therefore twisted, tilted or be moved radially. This can Loosen the fuel injector at the connection point and the high-pressure fuel line can be moved. It can also cause an undesirable load on the sealant occur. With a trained as a sealing ring Sealant that is on both the fuel injector also bears on the wall of the locating hole a rotation of the fuel injector in the Sealing ring built around shear stresses, which the Sealing properties of the sealing ring are deteriorated.
  • From DE 197 35 665 A1 is also a claw trained hold-down device, similar to that from JP-OS 08-312503 A known hold-down, known.
  • the cylinder head has a recess in the collar of the fuel injector is arranged whereby the collar of the fuel injector to which the Hold-down device acts, sunk into the cylinder head is. This hold-down also results in disadvantages already discussed.
  • the internal combustion engine according to the invention with the features of Claim 1 has the advantage that the Fuel injector into the cylinder head with ease can be installed and removed because the sealant is not in radial direction against the wall of the mounting hole of the Cylinder head is biased so that the sealant Installation and removal does not counteract. In particular thereby special tools for installing and removing the Fuel injector no longer needed.
  • Another advantage is that the bias of the Sealing element can be predetermined so that the Production accuracy requirements decrease. Moreover can a fuel injector with the invention Sealants are used universally.
  • the axial height of the recess at least substantially equal to half the axial height of the Basic body of the sealant is. This results in both a good sealing effect and great stability of the sealant.
  • a radial bias of the Sealing element over a large area on the nozzle body act.
  • the radial width of the recess at least substantially equal to half the radial width the cross section of the base body in the area of the recess is. This can result in great elasticity of the sealant, which is given by the sealing element, at a high Stability of the sealant, which is essentially due to the Basic body is given can be achieved.
  • the base body as a metal block is trained. This makes the sealant heat-resistant and dimensionally stable. It also makes it a big one given mechanical strength of the sealant.
  • the base body as a spring plate is formed. This can cause the sealant be manufactured easily and inexpensively. Besides, can with a suitable design of the sealant as Spring plate trained base body are biased.
  • the base body advantageously has a sleeve, a collar is formed at each end. Thereby is an advantageous support of the base body over the Collar on the fuel injector and on a step given the location hole.
  • the sealing element advantageously lies partially the second contact surface of the base body. This can the sealing element of the sealant both the function of axial as well as the function of the radial seal take.
  • the sealing element from one heat-resistant plastic preferably from one Fluoroelastomer, and in particular from a fluoroelastomer based on vinylidene fluoride-hexafluoropropylene copolymers, consists. It is special advantageous that the sealing element with the base body Vulcanization is connected.
  • the sealant can Example can be made as follows. First, the Base body the plastic raw material, for example in Form of a powder or granules, applied and then the plastic raw material is vulcanized, which creates a heat-resistant plastic that attaches to the Basic body is liable. It is advantageous if the Surface of the base body pre-processed accordingly to Example is roughened.
  • the sealing element advantageously consists of Polytetrafluoroethylene (PTFE). This is a heat resistant sealing element created that simple is to manufacture and because of its extremely high Chemical resistance to the combustion gases is stable.
  • PTFE Polytetrafluoroethylene
  • the sealing element in the assembled State of the fuel injector by means of Base body is biased in the axial direction. Thereby can the seal with the sealing element, especially in radial direction, can be further improved.
  • the base body advantageously lies over a Sealing plate at the step of the location hole. It is it is particularly advantageous if the sealing plate from a Soft metal, especially copper. This allows the Sealing can be further improved. Besides, that will Sealing element through the sealing plate in front of the immediate one Contact with the hot combustion gases and before The temperature of the combustion gases is protected.
  • the base body is designed so that the sealing element is close to the valve tip. Thereby can reduce the dead volume or the HC pockets can be achieved.
  • the base body as Heat sink serves to remove the heat from the Fuel injector, especially in the area of Nozzle body to derive.
  • the base body is in contact is mounted to the cylinder head to cool the To further improve the valve body.
  • Fig. 1 shows a fuel injector 1, with a Sealant 2 according to a first embodiment in a Receiving hole 3 of a cylinder head 4 is inserted.
  • the Fuel injection valve 1 has a nozzle body 5, with a middle part 6 of the fuel injection valve 1 connected is.
  • the nozzle body 5 has a fuel nozzle for injecting fuel into a combustion chamber 7 Internal combustion engine on, the fuel via a Spray opening 8 of the cylinder head 4 into the combustion chamber 7 arrives.
  • the sealant 2 encloses the nozzle body 5 circumferentially, the outer diameter of the sealant 2 at least essentially with the outside diameter of the Middle part 6 matches, and the inner diameter of Sealant 2 at least essentially with the Outer diameter of the nozzle body 5 matches.
  • the sealant 2 comprises a base body 15, the one Has recess 16, and a sealing element 17, which in a Recess 18 of the base body 15 is inserted.
  • the Recess 16 of the base body 15 is in this Embodiment as a central, axial bore through the Base body 15 executed, the nozzle body 5 extends through the recess 16.
  • the recess 18 is with the recess 16 connected so that there is a stepped bore 19 results.
  • the sealant 2 is supported on a sealing plate 20 the level 11 of the mounting hole 3. It also supports the sealant 2 on the middle part 6.
  • the fuel injector 1 is replaced by a Hold-down device 21 held in the receiving bore 3.
  • the hold-down device 21 has a hold-down device 22 and a fastening element designed as a screw 23 on.
  • the screw 23 penetrates a lever arm 24 of the Hold-down 22 and is in a threaded bore 25 of Cylinder head 4 screwed in.
  • the embodiment is the screw 23 completely in the Threaded hole 25 screwed so that the lever arm 24 flat rests on the top 26 of the cylinder head 4.
  • the hold-down 22 has one with the lever arm 24 connected fastener ring 27 on the Partially encloses fuel injector 1.
  • the Fastening ring part 27 of the hold-down 22 has one Recess 28 (Fig. 4) into which a housing part 29 of the Fuel injector 1 is inserted to prevent twisting the fuel injector to prevent. Because through that Bearing of the housing part 29 on surfaces 31, 32 (Fig. 4) a rotation of the fuel injector 1 about the axis of the fuel injector 1 in this Exemplary embodiment with the axis 12 of the receiving bore 3 matches, blocked, the rotational position of the Fuel injector 1 is also specified.
  • the Housing part 29 comprises an electrical connector 33.
  • the fuel injector 1 has a shoulder 37, on which a circumferential inner collar 38 of the Fastening ring part 27 of the hold-down device 22 engages.
  • about the circumferential inner collar 38 is that of the tightening force of the screw 23 generated preload circumferentially evenly on paragraph 37 of the fuel injector 1 transferred so that a uniform application of the Fuel injector 1 is reached to tilt to prevent the fuel injector 1.
  • the recess 28 (FIG. 4) on the lever arm 24 of the hold-down device 22 facing away from the fastener ring 27.
  • the fuel injector 1 has therefore in the Location bore 3 of the cylinder head 4 a Angular position with respect to the axis of the Fuel injector 1, in which the angular position of the Housing part 29 by 180 ° with respect to the angular position of the Screw 23 or the lever arm 24 is offset.
  • the fuel injector 1 has one Fuel inlet port 39 on, out of the fuel a high-pressure fuel line in the Fuel injector 1 is directed to the nozzle body 5.
  • the fuel inlet connector 39 has a housing part 40 connected, on which the paragraph 37 is formed.
  • the Housing part 40 has an outer surface 41.
  • At the Outer surface 41 of the housing part 40 of the Fuel injector 1 has an inner surface 42 of the Fastening ring part 27 of the hold-down device 22.
  • the Inner surface 42 is at least essentially flat on the outer surface 41, so that a displacement of the Fuel injector 1 in a radial direction is prevented and the axial position of the Fuel injector 1 is fixed.
  • the Fastening ring 27 is at least partially in a recess 43 which is part of the receiving bore 3, arranged so that the mounting ring 27 in the Cylinder head 4 is partially sunk.
  • FIG. 2 shows the section designated II in FIG. 1. Elements already described are the same Provide reference numerals, whereby a repetitive Description unnecessary.
  • the fuel injector 1 has a stage 50 that connects the middle part 6 with the nozzle body 5.
  • the Base body 15 of the sealant 2 is against one first bearing surface 51 on the middle part 6 of the fuel injector 1, wherein it is a Has recess 52 which receives the step 50.
  • the Base body 15 has a recess 16, which as a Axial bore is formed through which the nozzle body 5 extends.
  • the base body 15 has one Recess 18, which is connected to the recess 16, whereby the stepped bore 19 of the base body 15 is formed is.
  • the height of the recess 18 in the axial direction is in Embodiment approximately equal to half the height of the Base body 15 in the axial direction.
  • the width of the Recess 18 in the radial direction is approximately in Embodiment equal to half the width of the Cross section of the base body 15 in the radial direction.
  • the Recess 18 therefore has a rectangular cross section on.
  • annular gap 54 is formed.
  • the inner diameter of the sealing element 17 is in relaxed state smaller than the outside diameter of the Nozzle body 5, so that the sealing element 17 with a Preload is applied.
  • the preload of the Sealing element 17 acts on a sealing surface 55 the nozzle body 5, creating a gap 56 between the base body 15 and the nozzle body 5 is formed, is sealed.
  • annular gap 54 that can Sealing element 17 in the recess 18 of the Base body 15 are introduced, since none during insertion Friction between the base body 15 and the sealing element 17th occurs.
  • the base body 15 is supported on the sealing plate 20 the level 11 of the receiving bore 3 of the cylinder head 4.
  • the base body 15 by means of the hold-down device 21 (Fig. 1) with an axial biasing force, so that the annular gap 14 through the sealing plate 20th is sealed.
  • the sealing plate 20 is preferably made of a soft metal, especially made of copper, so that the sealing element 17 before direct contact with the combustion gases is protected. Protection takes place thereby against both the chemical and the thermal Action of the combustion gases on the sealing element 17.
  • the sealing plate 20 is both on the nozzle body 5 as well as on a peripheral wall 73 of the mounting hole 3. This makes the position of the Nozzle body 5 predetermined in the area of the sealing plate 20.
  • the sealing element 17 can advantageously be made of Polytetrafluoroethylene (PTFE) exist.
  • PTFE Polytetrafluoroethylene
  • polytetrafluoroethylene has the advantage that it is temperature resistant and one has extremely high chemical resistance. Therefore in the case of a sealing element 17 made of polytetrafluoroethylene or a similar material, the sealing plate 20 is also eliminated.
  • PTFE Polytetrafluoroethylene
  • the sealing element 17 when heating polytetrafluoroethylene reversible increase in volume, so that the sealing element 17th with some play on the nozzle body 5 of the Fuel injector 1 can be applied, wherein in operation, the sealing element 17 is heated and due to the Volume increase a seal on the sealing surface 55 he follows. It is through the gap 54 between the Base body 15 and the sealing element 17 a compensation space created to damage when volume increases to prevent the nozzle body 5.
  • the sealing element 17 can also be made of a different material be produced, the corresponding temperature and is resistant to chemicals.
  • the base body 15 is preferably a metal block trained to the preload without any noteworthy Transfer deformation to the sealing plate 20.
  • FIG. 3 shows the detail designated II in FIG. 1 in FIG an alternative embodiment according to a second Embodiment of a sealant 2 according to the invention. Elements already described are matching Provide reference numerals, whereby a repetitive Description unnecessary.
  • the base body 15 has a Sleeve 65, which is bent at its ends 66, 67, so that at the end 66 a radially outwardly extending collar 68 and at the end 67 a radially outward collar 69 is trained.
  • the collar 68 at the end 66 of the base body 15 has a first contact surface 51 which is on the step 50 is applied.
  • the system takes place on an end face 58 level 50 of the fuel injector 1.
  • the collar 69 of the base body 15 has a second contact surface 57, which is connected to the sealing element 17.
  • the sealing element 17 is also connected to an inner contact surface 70, the opposite of a lateral surface 71 of the Nozzle body 5 is formed on the base body 15.
  • the Sealing element 17 therefore forms both with the nozzle body 5 the sealing surface 55 as well as with the stage 11 Sealing surface 72. Therefore, the sealing plate 20 from the first Embodiment of FIGS. 1 and 2 are omitted.
  • the sealant 2 seals the receiving bore 3 reliably, so that a stepped, annular gap 13 can be formed, the radial displacement of the Fuel injector 1 allows, causing an offset the axis 12 of the receiving bore 3 and an axis of a Connection piece of a high pressure fuel line can be compensated.
  • the base body 15 is advantageous as a spring plate trained, causing it to withstand an axial load elastically deformed.
  • FIG. 4 shows the hold-down device 22 shown in FIG. 1 a top view.
  • the hold-down device 22 has a lever arm 24 and a fastener ring 27 on each other are connected.
  • the mounting ring 27 is by a Cutout 28 interrupted, creating a first Pitch circle section 74 and a second pitch circle section 75 are formed.
  • the first pitch circle section 74 has one Surface 31 on the one on the second pitch circle section 75th trained surface 32 is opposite.
  • the Fastening ring 27 has a circumferential inner collar 38 on, which is also interrupted by the recess 28.
  • the two surfaces 31, 32 are parallel to one another arranged and the axis of symmetry 76 of the hold-down 22nd is parallel to each of the surfaces 31, 32.
  • the fastening partial ring 27 serves to fasten the Fuel injection valve 1 in the receiving bore 3, wherein the surfaces 31, 32 on a housing part 29 of the Fuel injector 1 abut to twist the To prevent fuel injector 1.
  • the circulating Inner collar 38 acts with the paragraph 37 of the Fuel injector 1 together to make a uniform Transfer of a holding force of the hold-down 22 on the To reach fuel injector 1.
  • the lever arm 24 of the hold-down device 22 has a bore 77 to attach the hold-down 22 in the Threaded bore 25 of the cylinder head 4 by means of the screw 23 (Fig. 1) to allow.
  • FIG. 5 shows the hold-down device 22 shown in FIG. 4 the direction designated V in Fig. 4 in the Front view. Element already described are also here provided with the same reference numerals.
  • the fastening partial ring 27 has the inner surface 42, which in the assembled state on the housing of the Fuel injector 1 is applied to the axial position of the Fix fuel injector 1 further.
  • the hold-down device 22 can therefore also be used for one stepped, annular gap 13 (Fig. 1), the one Moving and tilting the axis of the Fuel injector 1 against the axis 12 of the Location hole 3 allows the axial position of the Fuel injector 1 are fixed.
  • This is particularly expedient because the Fuel injection valve 1 by the invention Sealant 2 in the receiving bore 3 in the radial direction is not rigidly fixed. It is therefore particularly advantageous that an inventive sealant 2 together with a Hold-down 22 for fastening a Fuel injection valve 1 in a receiving bore 3 is used.
  • the sealant 2 and the invention Hold-down devices 22 can also be used are used independently. Also suitable the sealant 2 and the Hold down 22 also for others Use cases.
  • the sealing plate 20 (FIG. 1) also replaced by a differently designed sealing body become.
  • FIG. 6 shows the section marked VI in FIG. 2 in FIG an alternative embodiment according to a third Embodiment of a sealant 2 according to the invention. Elements already described are in this and that following embodiments with matching Provide reference numerals, whereby a repetitive Description unnecessary.
  • the sealing element 17 is the is arranged in a ring around the nozzle body 5, non-positively with the base body 15 by means of a nose-like projection 80 of the base body 15 connected.
  • the sealing element 17 has a recess 81, in which the projection 80 of the base body 15 engages.
  • the Sealing element 2 according to the third embodiment has the Advantage that the position when mounting the sealing element 2 of the sealing element 17 of the sealing means 2 is fixed.
  • FIG. 7 shows the section marked VI in FIG. 2 in FIG an alternative embodiment according to a fourth Embodiment.
  • the recess 18 of the Base body 15 formed such that they start from one Place that between the first contact surface 51 and the second contact surface 57 (FIG. 3), starting from one Diameter, which is given by the recess 16, up to a diameter that is preferably smaller than that Outside diameter of the base body 15 is monotonous widened so that the recess 18 has a triangular shape Has cross-section.
  • the recess 18 is a introduced annular sealing element 17, the corresponding the recess 18 has a triangular cross section having.
  • FIG. 8 shows the section marked VI in FIG. 2 in FIG an alternative embodiment according to a fifth Embodiment of a sealant 2 according to the invention.
  • the recess 18 of the base body 15 according to the fifth Embodiment has a first part 82 and one second part 83.
  • the second part 83 is similar to that Recess 18 according to the fourth embodiment (see Fig. 7) formed, the second part 83 of the Recess 18 in this case from a diameter enlarged, which is larger than the diameter of the Nozzle body 5.
  • the first part 82 of the recess 18 narrows starting from the axial surface 53 of the base body 15, which has a diameter that is larger than that Diameter from which the second part 83 of the recess 18th enlarged, continuously up to this.
  • the sealing element 17 is shaped so that it fits into the recess 18, where due to the formed on the base body 15 Projection 80 a positive connection with the Base body 15 of the sealant 2 results, which is similar to that Connection according to the third embodiment (see Fig. 6) is.
  • Embodiments of the sealant 2 are exemplary To see configurations that are characterized by a simple Award structure. By combining and modifying them Exemplary embodiments can be subject to various boundary conditions adapted sealants are formed.

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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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (18)

  1. Moteur à combustion interne comportant une culasse (4), une chambre de combustion (7) et un injecteur de carburant (1) se plaçant dans un logement (3) de la culasse (4) pour injecter directement du carburant dans la chambre de combustion (7) ainsi qu'un moyen d'étanchéité (2) comprenant un élément d'étanchéité (17) entourant la périphérie du corps de buse (5) de l'injecteur de carburant (1) pour réaliser l'étanchéité de l'injecteur (1) par rapport au perçage de réception (3) de la culasse (4),
    caractérisé en ce que
    le moyen d'étanchéité (2) comprend un corps de base (15) ayant un logement axial (16) traversé par le corps de buse (5),
    le corps de base (15) ayant un évidement annulaire (18) relié à la cavité (16) pour recevoir l'élément d'étanchéité (17),
    le corps de base (15) s'appuyant par une première surface d'appui (51) au moins indirectement contre la surface frontale (58) de l'injecteur (1) et
    le corps de base (15) venant par sa seconde surface d'appui (57) opposée à la première surface d'appui (51) au moins indirectement contre un épaulement (11) du perçage de réception (3).
  2. Moteur à combustion interne selon la revendication 1,
    caractérisé en ce que
    la hauteur axiale de l'évidement (18) est au moins sensiblement égale à la moitié de la hauteur axiale du corps de base (15).
  3. Moteur à combustion interne selon la revendication 1ou 2,
    caractérisé en ce que
    la largeur radiale de l'évidement (18) est au moins pratiquement égale à la moitié de la largeur radiale de la section du corps de base (15) au niveau de l'évidement (18).
  4. Moteur à combustion interne selon l'une des revendications 1 à 3,
    caractérisé en ce que
    l'évidement annulaire (18) a une section pratiquement rectangulaire.
  5. Moteur à combustion interne selon l'une des revendications 1 à 3,
    caractérisé en ce que
    l'évidement annulaire (18) s'élargit en direction de la seconde surface d'appui (57).
  6. Moteur à combustion interne selon la revendication 5,
    caractérisé en ce que
    la section de l'évidement annulaire (18) est une section pratiquement triangulaire.
  7. Moteur à combustion interne selon l'une des revendications 1 à 6,
    caractérisé en ce que
    le corps de base (15) est formé par un bloc métallique.
  8. Moteur à combustion interne selon l'une des revendications 1 à 6,
    caractérisé en ce que
    le corps de base (15) est une tôle élastique.
  9. Moteur à combustion interne selon la revendication 8,
    caractérisé en ce que
    le corps de base (15) comporte un manchon (65) dont les extrémités (66, 67) forment chacune une collerette (68, 69).
  10. Moteur à combustion interne selon l'une des revendications 1 à 9,
    caractérisé en ce que
    l'élément d'étanchéité (17) est un joint d'étanchéité.
  11. Moteur à combustion interne selon l'une des revendications 1 à 10,
    caractérisé en ce que
    l'élément d'étanchéité (17) est appliqué en partie contre la seconde surface d'appui (57) du corps de base (15).
  12. Moteur à combustion interne selon l'une des revendications 1 à 11,
    caractérisé en ce que
    l'élément d'étanchéité ( 17) est réalisé en une matière plastique résistant à la chaleur, de préférence en un fluoélastomère, notamment en un fluoélastomère à base de copolymérisats, fluorure de vinylidène-hexafluorure de propylène.
  13. Moteur à combustion interne selon la revendication 12,
    caractérisé en ce que
    l'élément d'étanchéité (17) est relié au corps de base (15) par vulcanisation.
  14. Moteur à combustion interne selon l'une des revendications 1 à 11,
    caractérisé en ce que
    l'élément d'étanchéité (17) est en un polytétrafluoréthylène (PTFE).
  15. Moteur à combustion interne selon l'une des revendications 1 à 14,
    caractérisé en ce que
    l'élément d'étanchéité (17) est précontraint dans la direction radiale.
  16. Moteur à combustion interne selon l'une des revendications 1 à 15,
    caractérisé en ce que
    l'élément d'étanchéité (17) est précontraint dans la direction axiale par le corps de base (15) lorsque l'injecteur (1) est monté.
  17. Moteur à combustion interne selon l'une des revendications 1 à 16,
    caractérisé en ce que
    le corps de base (15) est appliqué contre l'épaulement (11) du perçage de réception (3) par l'intermédiaire d'une plaque d'étanchéité (20).
  18. Moteur à combustion interne selon la revendication 17,
    caractérisé en ce que
    la plaque d'étanchéité (20) est en un métal mou, notamment en cuivre.
EP01951353A 2000-06-03 2001-05-31 Moteur a combustion interne Expired - Lifetime EP1290338B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04020734A EP1482168B1 (fr) 2000-06-03 2001-05-31 Serre-flan pour injecteur de carburant

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10027662 2000-06-03
DE10027662A DE10027662A1 (de) 2000-06-03 2000-06-03 Dichtmittel und Niederhalter für ein Brennstoffeinspritzventil
PCT/DE2001/002061 WO2001094776A2 (fr) 2000-06-03 2001-05-31 Moyen d'etancheite et serre-flan pour une soupape d'injection de carburant

Related Child Applications (1)

Application Number Title Priority Date Filing Date
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EP (2) EP1290338B1 (fr)
JP (1) JP2003536019A (fr)
KR (1) KR100744961B1 (fr)
CN (1) CN1394256A (fr)
BR (1) BR0106711A (fr)
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US7261246B2 (en) 2007-08-28
US20020162538A1 (en) 2002-11-07
EP1482168A1 (fr) 2004-12-01
US6811102B2 (en) 2004-11-02
WO2001094776A2 (fr) 2001-12-13
CN1394256A (zh) 2003-01-29
DE10027662A1 (de) 2001-12-06
DE50112774D1 (de) 2007-09-06
WO2001094776A3 (fr) 2002-08-01
US20050016501A1 (en) 2005-01-27
BR0106711A (pt) 2002-04-16
EP1290338A2 (fr) 2003-03-12
EP1482168B1 (fr) 2007-07-25
KR100744961B1 (ko) 2007-08-02
JP2003536019A (ja) 2003-12-02
DE50104696D1 (de) 2005-01-05
KR20020020803A (ko) 2002-03-15

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