EP1290338A2 - Moyen d'etancheite et serre-flan pour une soupape d'injection de carburant - Google Patents

Moyen d'etancheite et serre-flan pour une soupape d'injection de carburant

Info

Publication number
EP1290338A2
EP1290338A2 EP01951353A EP01951353A EP1290338A2 EP 1290338 A2 EP1290338 A2 EP 1290338A2 EP 01951353 A EP01951353 A EP 01951353A EP 01951353 A EP01951353 A EP 01951353A EP 1290338 A2 EP1290338 A2 EP 1290338A2
Authority
EP
European Patent Office
Prior art keywords
base body
sealing element
injection valve
fuel
sealant according
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
Application number
EP01951353A
Other languages
German (de)
English (en)
Other versions
EP1290338B1 (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

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
    • F02M61/14—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 a sealant according to the preamble of claim 1 or a hold-down device according to the preamble of claim 19.
  • sealant is formed by a radially circumferential groove, which is formed on a nozzle body of a fuel injection valve inserted into a receiving bore, and a sealing ring inserted into the groove.
  • the sealing ring is prestressed in the radial direction, being supported on the one hand in the groove of the nozzle body and on the other hand on the wall of the receiving bore.
  • a disadvantage of the method known from DE 197 '35 665 AI sealing means that the pretension of the sealing element depends on the geometry and in particular of the diameter of the receiving bore. Therefore, the known sealant cannot be used universally, but must be specially adapted for each mounting hole. In addition, the prestressing of the sealing element cannot be adjusted, so that the prestressing is predetermined differently due to aging or due to fluctuations in production technology, which may result in insufficient sealing. In addition, the seal is directly exposed to the hot exhaust gases, which accelerates the aging of the sealing ring. In addition, the known sealant penetrates the sealant, in particular because of the almost circular cross section of the sealing element.
  • Another disadvantage is that due to the radial preload of the sealing element, a frictional force occurs which counteracts an axial displacement of the sealing means. This makes the installation and removal as well as the adjustment of the fuel injector considerably more difficult. Due to dirt that is deposited on the sealing element and aging of the sealing element, it can even occur that the removal of the fuel injector is no longer possible or that the sealing element is destroyed when the fuel injector is removed.
  • a sealant which is designed as a heat protection sleeve.
  • the heat protection sleeve is inserted into a stepped receiving bore of a cylinder head of an internal combustion engine, and it surrounds a spray-side nozzle body of a fuel injector inserted into the receiving bore.
  • the tubular heat protection sleeve is bent over at the end on the spray side in order to achieve a double position of the sleeve.
  • the double position of the sleeve is biased radially against the wall of the receiving bore to seal an annular gap formed between the nozzle body and the receiving bore.
  • the nozzle body of the fuel injection valve has a conical section which is pushed into the sleeve and is clamped in the sleeve in the region of the bent sleeve.
  • the fuel injector also bears against an inclined step in order to fix the position of the fuel injector in the receiving bore.
  • a disadvantage of the fuel injector known from DE 197 43 103 AI is that the heat protection sleeve is prestressed in the region of the double position of the sleeve between the nozzle body and the receiving bore. The problems already discussed above arise when installing or removing the fuel injector. Another disadvantage is that the position of the fuel injector in the receiving bore is fixed.
  • the axis of the fuel injector introduced into the receiving bore generally does not exactly match the axis of a connecting piece of a high-pressure fuel line. An additional intermediate piece is therefore required to connect the fuel injection valve to the high-pressure fuel line.
  • a hold-down device holds down a fuel injection valve against a relatively high combustion pressure prevailing in the combustion chamber of the internal combustion engine.
  • the hold-down acts on two circumferentially opposite points on a collar of the fuel injector, the collar resting with its underside on the top of the cylinder head, so that the fuel injector is held.
  • the hold-down device known from JP-OS 08-312503 A has the disadvantage that it only acts on the fuel injector in the axial direction.
  • the fuel injection valve When the fuel injection valve is subjected to mechanical loading, the fuel injection valve can therefore be rotated, tilted or displaced radially. This can loosen the fuel injector at the connection point and the high-pressure fuel line can be moved. An undesirable load on the sealant can also occur.
  • a sealant in the form of a sealing ring which bears against both the fuel injection valve and the wall of the receiving bore, when the fuel injection valve rotates, Sealing ring built up shear stresses extensively, whereby the sealing properties of the sealing ring are deteriorated.
  • a hold-down device designed as a clamping claw is also known, similar to the hold-down device known from JP-OS 08-312503 A.
  • the cylinder head has a recess in which the collar of the fuel injector is arranged, whereby the collar of the fuel injector, on which the Niederhaitevorrichung acts, is sunk into the cylinder head.
  • This downholder also has the disadvantages already discussed.
  • the sealant of the invention with the features of claim 1 has the advantage that the fuel injector can be easily installed and removed in the cylinder head, since the sealant is not biased in the radial direction against the wall of the receiving bore of the cylinder head, so that the sealant Installation and removal does not counteract. In particular, special tools for installing and removing the fuel injector are no longer required.
  • Another advantage is that the prestressing of the sealing element can be predetermined, so that the requirements for production accuracy decrease.
  • a fuel injector with the sealant according to the invention can be used universally.
  • the sealing properties of the sealant are independent of the position of the fuel injector in the receiving bore, so that, for example, an axis offset can be compensated for without problems.
  • the hold-down device according to the invention with the features of claim 19 has compared to the above-described state of Technology has the advantage that the position of the fuel injector and in particular the rotational position of the fuel injector is fixed.
  • the holding-down device acts circumferentially at least approximately uniformly on the fuel injector, so that tilting of the fuel injector is prevented.
  • the axial height of the recess is at least substantially equal to half the axial height of the base body of the sealant. This results in both a good sealing effect and great stability of the sealant.
  • a radial prestressing of the sealing element can act on the nozzle body over a large area.
  • the radial width of the cutout is at least substantially equal to half the radial width of the cross section of the base body in the area of the cutout. This allows a • high elasticity of the sealant, which is given by the sealing element, with a high stability of the sealant, which is essentially given by the base body.
  • the base body is designed as a metal block.
  • the sealant is heat-resistant and dimensionally stable. In addition, this gives the sealant great mechanical strength.
  • the base body is designed as a spring plate.
  • the base body designed as a spring plate can be prestressed.
  • the base body advantageously has a sleeve, at the ends of which a collar is formed. This provides an advantageous support for the base body via the collars on the fuel injector and on a step of the receiving bore.
  • the sealing element partially abuts the second contact surface of the base body.
  • the sealing element of the sealing means can take on both the function of the axial and the function of the radial seal.
  • the sealing element is made of a heat-resistant plastic, preferably of a fluoroelastomer, and in particular of a fluoroelastomer based on vinylidene fluoride-hexafluoropropylene copoly. It is particularly advantageous that the sealing element is connected to the base body by vulcanization.
  • the sealant can be produced as follows, for example. First, the plastic starting material, for example in the form of a powder or a granulate, is applied to the base body and then the plastic starting material is vulcanized, whereby a heat-resistant plastic is formed which adheres to the base body. It is advantageous if the surface of the base body is pre-processed accordingly, for example roughened.
  • the sealing element advantageously consists of polytetrafluoroethylene (PTFE). This creates a heat-resistant sealing element that is ' easy to manufacture and, due to its extremely high chemical resistance, is resistant to the combustion gases.
  • PTFE polytetrafluoroethylene
  • the base body advantageously abuts the step of the receiving bore via a sealing plate. It is particularly advantageous if the sealing plate consists of a soft metal, in particular copper. This can further improve the seal. In addition, the sealing element is protected by the sealing plate from direct contact with the hot combustion gases and from the temperature of the combustion gases.
  • Fuel injector arranged. This allows the fastener ring to fuel the fuel injector from two
  • the fastening part ring has a circumferential inner collar which interacts with a circumferential shoulder of the fuel injector in order to prevent the fuel injector from tilting.
  • the force of the hold-down device is at least almost uniformly transmitted to the fuel injector.
  • the fastening partial ring has an inner surface on which the fuel injector bears at least substantially flatly in order to prevent the fuel injector from moving in a radial direction. Due to the flat contact of the fuel injector on the inner surface of the Fastening ring is also prevented from tilting of the fuel injector.
  • the base body is designed so that the sealing element is close to the valve tip. A reduction in the dead volume or the HC pockets can thereby be achieved.
  • the base body is mounted in contact with the cylinder head in order to further improve the cooling of the valve body.
  • the hold-down device is advantageously at least partially arranged in the receiving bore, and the inner surface of the hold-down device lies essentially against the fuel injection valve in a region within the receiving hole.
  • the hold-down device can be at least partially sunk in the receiving bore of the cylinder head, so that the fuel injector can be made more compact. This also makes assembly easier and the hold-down device is better protected.
  • Fig. 1 is a partial axial section through a first embodiment, in which a fuel injection valve by means of a sealant according to the invention and a hold-down according to the invention in one Location bore of a cylinder head is attached;
  • FIG. 2 shows the section designated II in FIG. 1;
  • FIG. 3 shows the section designated II in FIG. 1 in an alternative embodiment in accordance with a second exemplary embodiment
  • FIG. 4 shows the top view of a hold-down device according to the invention
  • FIG. 5 shows the side view of the hold-down device shown in FIG. 4 in the direction designated V;
  • FIG. 6 shows the detail designated VI in FIG. 2 in an alternative embodiment according to a third exemplary embodiment
  • FIG. 7 shows the section designated VI in FIG. 2 in an alternative embodiment in accordance with a fourth exemplary embodiment.
  • FIG. 8 shows the section designated VI in FIG. 2 in an alternative embodiment according to a fifth exemplary embodiment.
  • the fuel injector 1 shows a fuel injector 1, which is inserted with a sealant 2 according to a first exemplary embodiment into a receiving bore 3 of a cylinder head 4.
  • the fuel injector 1 has a nozzle body 5, which is connected to a central part 6 of the fuel injector 1.
  • the nozzle body 5 has a fuel nozzle for injecting fuel into a combustion chamber 7 of the internal combustion engine, wherein the • fuel via one ejection opening 8 of the cylinder head 4 in the combustion chamber 7 arrives.
  • the sealant 2 surrounds the nozzle body 5 circumferentially, the outer diameter of the sealant 2 being at least substantially the same as the outer diameter of the middle part 6, and the inner diameter of the sealant 2 being at least substantially the same as the outer diameter of the nozzle body 5.
  • the receiving bore 3 has a first section 9 of smaller diameter and a second section 10 of larger diameter.
  • the first section 9 and the second section 10 are connected to one another by means of a step 11 of the receiving bore 3.
  • the outer diameter of the middle part 6 of the fuel injection valve 1 and the outer diameter of the sealant 2 correspond at least substantially to the diameter of the second section 10 of the receiving bore 3.
  • the axis of the fuel injection valve 1 corresponds to the axis 12 of the receiving bore 3.
  • a stepped, annular gap 13 is formed between the fuel injection valve 1 and the receiving bore 3, which comprises an annular gap 14, which is located between the middle part 6 of the fuel injection valve 1 or the sealant 2 and the second section 10 of the receiving bore 3 is formed.
  • the sealing means 2 comprises a base body 15, which has a recess 16, and a sealing element 17, which is inserted into a recess 18 of the base body 15.
  • the recess 16 of the base body 15 is designed in this embodiment as a central, axial bore through the base body 15, whereby . de-r-- -Nozenkör- er ---- 5- extends through the recess 16.
  • the recess 18 is connected to the recess 16, so that there is a stepped bore 19.
  • the sealant 2 is supported by a sealing plate 20 on the step 11 of the receiving bore 3. In addition, the sealant 2 is supported on the middle part 6.
  • the fuel injection valve 1 is held in the receiving bore 3 by a hold-down device 21.
  • the hold-down device 21 has a hold-down device 22 and a fastening element designed as a screw 23.
  • the screw 23 penetrates a lever arm 24 of the hold-down device 22 and is screwed into a threaded bore 25 of the cylinder head 4. In this embodiment, the screw 23 is completely screwed into the threaded bore 25, so that the lever arm 24 lies flat on the top 26 of the cylinder head 4.
  • the hold-down device 22 has a fastening partial ring 27 which is connected to the lever arm 24 and which partially surrounds the fuel injection valve 1.
  • the fastening part ring 27 of the hold-down device 22 has a cutout 28 (FIG. 4), into which a housing part 29 of the fuel injection valve 1 is inserted in order to prevent the fuel injection valve from rotating. Because the abutment of the housing part 29 against surfaces 31, 32 (FIG. 4), rotation of the fuel injection valve 1 about the axis of the fuel injection valve 1, which in this exemplary embodiment corresponds to the axis 12 of the receiving bore 3, is blocked, the rotational position of the fuel injection valve 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 part ring 27 of the hold-down device 22 engages.
  • the prestressing force generated by the tightening force of the screw 23 is circumferential via the circumferential inner collar 38 evenly on paragraph 37 of the fuel injector
  • Fuel injector 1 is reached in order to prevent the fuel injector 1 from tilting.
  • the recess 28 is provided in order to achieve good leverage ratios.
  • the fuel injector 1 has therefore in the
  • Fuel injection valve 1 in which the angular position of the
  • Screw 23 or the lever arm 24 is offset.
  • the fuel injection valve 1 has a fuel inlet connection 39, via which fuel is conducted from a high-pressure fuel line into the fuel injection valve 1 to the nozzle body 5.
  • the fuel inlet connector 39 is connected to a housing part 40 on which the shoulder 37 is formed.
  • the housing part 40 has an outer surface 41.
  • An inner surface 42 of the fastening part ring 27 of the hold-down device 22 bears on the outer surface 41 of the housing part 40 of the fuel injection valve 1.
  • the inner surface 42 lies at least substantially flat on the outer surface 41, so that 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 part ring 27 is at least partially arranged in a recess 43, which is part of the receiving bore 3, so that the fastening part ring 27 is partially countersunk in the cylinder head 4.
  • FIG. 2 shows the section designated II in FIG. 1. Elements that have already been described are provided with the same reference numerals, so that a repetitive description is unnecessary.
  • the fuel injection valve 1 has a step 50 which connects the middle part 6 to the nozzle body 5.
  • the basic body 15 of the sealing means 2 bears against an end-side first contact surface 51 on the middle part 6 of the fuel injection valve 1, wherein it has a recess 52 which receives the step 50.
  • the base body 15 has a recess 16 which is designed as an axial bore through which the nozzle body 5 extends.
  • the base body 15 has a recess 18 which is connected to the recess 16, as a result of which the stepped bore 19 - of the base body 15 is formed.
  • the height of the recess 18 in the axial direction is approximately equal to half the height of the base body 15 in the axial direction in the exemplary embodiment.
  • the width of the recess 18 in the radial direction is approximately equal to half the width of the cross section of the base body 15 in the radial direction in the exemplary embodiment.
  • the recess 18 therefore has a rectangular cross section.
  • the sealing element 17 is introduced into the recess 18 of the base body 15, the sealing element 17 abutting an axial surface 53 of the base body 15 and an annular gap 54 being formed between the sealing element 17 and a radial surface 59 of the base body 15.
  • the inner diameter of the sealing element 17 is smaller in the relaxed state than the outer diameter of the nozzle body 5, so that the sealing element 17 is subjected to a pretension.
  • the bias of the sealing element 17 acts on a sealing surface 55 on the nozzle body 5, as a result of which a gap 56, which is formed between the base body 15 and the nozzle body 5, is sealed.
  • the sealing element 17 can be introduced into the cutout 18 of the basic body 15 particularly easily since there is no friction between the basic body 15 and the sealing element 17 during the insertion.
  • the base body 15 is supported via the sealing plate 20 on the step 11 of the receiving bore 3 of the cylinder head 4.
  • the base body 15 is acted upon by the hold-down device 21 (FIG. 1) with an axial pretensioning force, so that the annular gap 14 is sealed by the sealing plate 20.
  • the sealing plate 20 is preferably made of a soft metal, in particular copper, so that the sealing element 17 is protected from direct contact with the combustion gases. Protection is provided against both the chemical and the thermal effects of the combustion gases on the sealing element 17.
  • the sealing plate 20 bears against both the nozzle body 5 and against a circumferential wall 73 of the receiving bore 3.
  • the position of the nozzle body 5 in the region of the sealing plate 20 is thereby predetermined.
  • the outer and / or the inner diameter of the sealing plate 20 can also be chosen so that a space is formed between the nozzle body 5 and the sealing plate 20 or, the sealing plate 20 and the peripheral wall 73 of the receiving bore 3, whereby a displacement of the fuel injector 1 is made possible in the radial direction.
  • the sealing element 17 can advantageously consist of polytetrafluoroethylene (PTFE).
  • PTFE polytetrafluoroethylene
  • Polytetrafluoroethylene has the advantage that it is temperature-resistant and has an extremely high chemical resistance. Therefore, in the case of a sealing element 17 made of polytetrafluoroethylene or a similar material, the sealing plate 20 can also be omitted.
  • PTFE polytetrafluoroethylene
  • the sealing element 17 can also be made from another material 5 which is correspondingly resistant to temperature and chemicals.
  • Fuel injector 1 abuts and abuts on a second contact surface 57, which lies opposite the first contact surface 51, via the sealing plate 20 on the step 11 of the receiving bore 3, is the distance between the end face 58 of the fuel injector 1 and
  • the biasing force of the fuel injector 1 can also be determined by the height of the base body 15 and / or by the thickness of the sealing plate 20. Since the first contact surface 51 runs parallel to 0 of the second contact surface 57, there is a particularly favorable force transmission of the pretensioning force of the fuel injector 1 to the sealing plate 20.
  • the base body 15 is preferably designed as a metal block in order to apply the pretensioning force without any noteworthy deformation to transfer the sealing plate 20.
  • FIG. 3 shows the section designated II in FIG. 1 in an alternative embodiment according to a second exemplary embodiment of a sealant 2 according to the invention. Elements already described are provided with the same reference numerals, so that a repeated description is unnecessary.
  • the base body 15 has a sleeve 65 which is bent at its ends 66, 67, so that a radially outwardly extending collar 68 is formed at the end 66 and a radially outwardly extending collar 69 is formed at the end 67 ,
  • 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 of stage 50 of fuel injector 1.
  • Collar 69 of base body 15 has a second contact surface 57, which is connected to sealing element 17.
  • the sealing element 17 is also connected to an inner contact surface 70, which is formed opposite to a lateral surface 71 of the nozzle body 5 on the base body 15.
  • the sealing element 17 therefore forms both the sealing surface 55 with the nozzle body 5 and a sealing surface 72 with the step 11.
  • the sealing plate 20 can therefore be omitted from the first exemplary embodiment in FIGS. 1 and 2.
  • connection of the sealing element 17 to the base body 15 results from the fact that the sealing element 17 is vulcanized on the base body 15.
  • 15 vinylidene fluoride-hexafluoropropylene copolymers are applied to the base body and then vulcanized, whereby the corresponding fluoroelastomer is produced.
  • the resulting fluoroelastomer adheres to the metallic base body 15.
  • the sealant 2 therefore consists of one piece, which simplifies the application to the nozzle body 5 and the assembly of the fuel injector 1.
  • the sealant 2 is sealed on the one hand in the radial direction against the nozzle body 5 and on the other hand in the axial direction against the step 11 of the receiving bore 3. Since there is no sealing in the radial direction against the wall 73 of the receiving bore 3, it acts upon insertion of the sealant 2 in the receiving bore 3 also no frictional force that would arise from contact of the sealant 2 with the wall 73, so that the installation and removal of the fuel injector 1 is considerably simplified.
  • 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 enables, whereby an offset of the axis 12 of the receiving bore 3 and an axis of a connecting piece of a high-pressure fuel line can be compensated.
  • the base body 15 is advantageously designed as a spring plate, whereby it deforms elastically when subjected to an axial load.
  • FIG. 4 shows the hold-down device 22 shown in FIG. 1 in a top view.
  • the hold-down device 22 has a lever arm 24 and a fastening partial ring 27 which are connected to one another.
  • the fastening partial ring 27 is interrupted by a cutout 28, as a result of which a first partial circular section 74 and a second partial circular section 75 are formed.
  • the first pitch circle section 74 has a surface 31, which is opposite a surface 32 formed on the second pitch circle section 75.
  • the fastening partial ring 27 has a circumferential inner collar 38, which is likewise interrupted by the recess 28.
  • the two surfaces 31, 32 are arranged parallel to one another and the axis of symmetry 76 of the hold-down device 22 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, the surfaces 31,, 32 abutting against a housing part 29 of the fuel injection valve 1 in order to prevent the fuel injection valve 1 from rotating.
  • the circumferential inner collar 38 interacts with the shoulder 37 of the fuel injection valve 1 in order to achieve a uniform transmission of a holding force of the hold-down device 22 to the fuel injection valve 1.
  • the fastening partial ring 27 has the inner surface 42 which, in the assembled state, bears against the housing of the fuel injector 1 in order to further fix the axial position of the fuel injector 1.
  • the axial position of the fuel injector 1 can therefore also be fixed in the case of a stepped, annular gap 13 (FIG. 1), which enables the axis of the fuel injection valve 1 to be displaced and tilted against the axis 12 of the receiving bore 3.
  • a sealant 2 according to the invention is used together with a hold-down device 22 according to the invention for fastening a fuel injection valve 1 in a receiving bore 3.
  • the sealant 2 according to the invention and the hold-down device 22 according to the invention can also be used independently of one another.
  • the sealant 2 according to the invention and the hold-down device 22 according to the invention are also suitable for other applications.
  • the sealing plate 20 (FIG. 1) can also be replaced by a differently designed sealing body.
  • FIG. 6 shows the section designated VI in FIG. 2 in an alternative embodiment according to a third exemplary embodiment of a sealant 2 according to the invention.
  • the sealing element 17, which is arranged in a ring around the nozzle body 5, is non-positively connected to the base body 15 by means of a nose-like projection 80 of the base body 15.
  • the sealing element 17 has a recess 81, into 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 of the sealing element 17 of the sealing means 2 is fixed when the sealing element 2 is installed.
  • FIG. 7 shows the section designated VI in FIG. 2 in an alternative embodiment according to a fourth embodiment.
  • the recess 18 of the base body 15 is designed such that it starts from a point which lies between the first contact surface 51 and the second contact surface 57 (FIG. 3). Diameter, which is given by the recess 16, up to a diameter which is preferably smaller than the outer diameter of the base body 15, widened monotonously, so that the recess 18 has a triangular cross section.
  • An annular sealing element 17 is introduced into the recess 18 and has a triangular cross section corresponding to the recess 18.
  • the recess 18 can also consist of a plurality of inclined sections, which at least in part have different opening angles.
  • FIG. 8 shows the section designated VI in FIG. 2 in 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 exemplary embodiment has a first part 82 and a second part 83.
  • the second part 83 is designed similarly to the recess 18 according to the fourth exemplary embodiment (see FIG. 7), the second part 83 of the recess 18 increasing in this case from a diameter that is larger than the diameter of the nozzle body 5
  • the first part 82 of the recess 18 narrows continuously starting from the axial surface 53 of the base body 15, which has a diameter that is larger than the diameter from which the second part 83 of the recess 18 increases, up to this.
  • the sealing element 17 is shaped in such a way that it fits into the recess 18, the result of the projection 80 formed on the base body 15 being a non-positive connection to the base body 15 of the sealant 2, which is similar to the connection according to the third exemplary embodiment (see 6).
  • the configurations of the sealing means 2 described in the exemplary embodiments are to be seen as exemplary configurations which are distinguished by a simple structure. By combining and modifying these exemplary embodiments, sealants adapted to different boundary conditions can be 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)

Abstract

L'invention concerne un moyen d'étanchéité (2) pour une soupape d'injection de carburant (1) pouvant être insérée dans un alésage de réception (3) d'une culasse (4) d'un moteur à combustion interne pour l'injection directe de carburant dans une chambre de combustion (7) du moteur à combustion interne. Le moyen d'étanchéité selon l'invention comprend un élément d'étanchéité (17) qui enferme périphériquement un corps d'injecteur (5) de la soupape d'injection de carburant (1). Le moyen d'étanchéité (2) selon l'invention est caractérisé en ce qu'il comprend un corps de base (15) pourvu d'un creux axial (16) à travers lequel s'étend le corps d'injecteur (5). Le corps de base (15) comprend en outre un évidement annulaire (18) relié au creux (16) et dans lequel est introduit l'élément d'étanchéité (17). Une première surface d'appui (51) du corps de base (15) s'appuie au moins indirectement contre une surface frontale (58) de la soupape d'injection de carburant (1) et une deuxième surface d'appui (57) du corps de base (15), opposée à la première (51), s'appuie au moins indirectement contre un échelon (11) de l'alésage de réception (3).
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
EP04020734A Division EP1482168B1 (fr) 2000-06-03 2001-05-31 Serre-flan pour injecteur de carburant

Publications (2)

Publication Number Publication Date
EP1290338A2 true EP1290338A2 (fr) 2003-03-12
EP1290338B1 EP1290338B1 (fr) 2004-12-01

Family

ID=7644665

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04020734A Expired - Lifetime EP1482168B1 (fr) 2000-06-03 2001-05-31 Serre-flan pour injecteur de carburant
EP01951353A Expired - Lifetime EP1290338B1 (fr) 2000-06-03 2001-05-31 Moteur a combustion interne

Family Applications Before (1)

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

Country Status (8)

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US (2) US6811102B2 (fr)
EP (2) EP1482168B1 (fr)
JP (1) JP2003536019A (fr)
KR (1) KR100744961B1 (fr)
CN (1) CN1394256A (fr)
BR (1) BR0106711A (fr)
DE (3) DE10027662A1 (fr)
WO (1) WO2001094776A2 (fr)

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108194A1 (de) * 2001-02-21 2002-08-29 Bosch Gmbh Robert Dichtvorrichtung für ein Brennstoffeinspritzventil
DE10200044A1 (de) * 2002-01-03 2003-07-24 Bosch Gmbh Robert Brennstoffeinspritzventil
EP1523619A1 (fr) * 2002-07-12 2005-04-20 Robert Bosch Gmbh Soupape d'injection de carburant et procede pour installer une soupape d'injection de carburant dans un logement de soupape
AU2003287430A1 (en) * 2002-10-30 2004-05-25 Mark Ocondi Intelligent wireless multicast network
US7108206B2 (en) * 2002-12-04 2006-09-19 Caterpillar Inc. Valve assembly and fuel injector using same
JP2004360586A (ja) * 2003-06-05 2004-12-24 Mitsubishi Electric Corp 筒内噴射用燃料噴射弁装置
DE10338715B4 (de) 2003-08-22 2014-07-17 Robert Bosch Gmbh Ausgleichselement für ein Brennstoffeinspritzventil
DE10345965A1 (de) * 2003-10-02 2005-07-07 Parker Hannifin Gmbh Brennstoffeinspritzventil
JP4267433B2 (ja) * 2003-11-25 2009-05-27 トヨタ自動車株式会社 燃料噴射弁用燃焼ガスシール
DE602004001125T2 (de) * 2004-03-11 2007-01-04 Delphi Technologies, Inc., Troy Verfahren zum Zusammenbau eines Kraftstoffeinspritzventils
JP4501490B2 (ja) * 2004-03-26 2010-07-14 トヨタ自動車株式会社 ガスケット
KR100863227B1 (ko) * 2004-11-10 2008-10-15 주식회사 나래나노텍 평탄부 및 리세스부를 구비한 노즐 단부 구조를 갖는 노즐디스펜서 및 그 제조 방법
DE102005024053A1 (de) * 2005-05-25 2006-11-30 Robert Bosch Gmbh Anschluss-System
DE102005053112A1 (de) * 2005-11-08 2007-05-10 Robert Bosch Gmbh Kraftstoffeinspritzventil mit Sicherung für ein Ventil-Brennraum-Dichtelement
KR100862418B1 (ko) * 2006-12-15 2008-10-08 현대자동차주식회사 자동차용 인젝터 클램프
DE102007011316A1 (de) * 2007-03-08 2008-09-11 Robert Bosch Gmbh Abdichtelemente für Kraftstoffinjektoren
DE102007019006B4 (de) 2007-04-21 2009-06-18 Ab Skf Dichtelement
US20080295806A1 (en) * 2007-06-04 2008-12-04 Caterpillar Inc. Heat conducting sleeve for a fuel injector
FR2920488A1 (fr) * 2007-09-04 2009-03-06 Peugeot Citroen Automobiles Sa Dispositif d'injection pour un moteur a combustion interne comportant un tel dispositif d'injection.
US7819107B2 (en) 2007-12-21 2010-10-26 Caterpillar Inc Pumping element for a fluid pump and method
JP4710944B2 (ja) * 2008-03-06 2011-06-29 株式会社デンソー 燃料噴射弁
US20090235898A1 (en) * 2008-03-19 2009-09-24 Short Jason C Fuel injector isolator
DE102008000753A1 (de) * 2008-03-19 2009-09-24 Robert Bosch Gmbh Abgedichtete elektrische Durchführung
DE102008002654A1 (de) 2008-06-26 2009-12-31 Robert Bosch Gmbh Entkoppelungselement für eine Brennstoffeinspritzvorrichtung
US7703421B2 (en) * 2008-07-31 2010-04-27 Caterpillar Inc. Cooling arrangement for a fuel injector and method
DE102008036413A1 (de) * 2008-08-05 2010-02-18 Continental Automotive Gmbh Kraftstoffeinspritzventil zur Anordnung an einem Brennraum einer Brennkraftmaschine
DE102008054591A1 (de) 2008-12-12 2010-06-17 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
EP2379872A4 (fr) * 2009-01-16 2013-03-20 Illinois Tool Works Ensemble ressort a deux phases pour une utilisation avec un systeme d'injecteur de carburant
DE102009000285A1 (de) * 2009-01-19 2010-07-22 Robert Bosch Gmbh Kraftstoff-Injektor sowie Brennkraftmaschine mit Kraftstoff-Injektor
US8047183B2 (en) * 2009-05-29 2011-11-01 Cummins Intellectual Properties, Inc. Fuel injector, clamping assembly and method of mounting a fuel injector
US8069842B2 (en) * 2009-07-02 2011-12-06 Robert Bosch Gmbh Injector mounting assembly
US9284932B2 (en) * 2010-03-25 2016-03-15 Denso International America, Inc. Mounting structure for fuel injector
US20110265767A1 (en) * 2010-05-03 2011-11-03 Delphi Technologies, Inc. Isolater for fuel injector
EP2599990B1 (fr) * 2010-07-30 2015-09-02 Toyota Jidosha Kabushiki Kaisha Isolant amortisseur de vibrations pour injecteur de carburant
DE102010034411B4 (de) * 2010-08-14 2018-10-11 Audi Ag Brennkraftmaschine mit Einspritzventil
US8516996B2 (en) * 2010-12-01 2013-08-27 Ford Global Technologies Direct fuel injection system for internal combustion engine with conical ring injector isolator
JP2013050081A (ja) * 2011-08-31 2013-03-14 Denso Corp 高圧ポンプ
EP2587047B1 (fr) * 2011-10-27 2015-02-25 Continental Automotive GmbH Agencement d'injecteur
DE102011089295A1 (de) 2011-12-20 2013-06-20 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102011089274A1 (de) 2011-12-20 2013-06-20 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
JP5867158B2 (ja) * 2012-02-24 2016-02-24 Nok株式会社 密封構造
DE102012206194A1 (de) 2012-04-16 2013-10-17 Robert Bosch Gmbh Mehrteiliges Isolationselement, insbesondere für eine Brennstoffeinspritzvorrichtung
JP5831510B2 (ja) 2012-11-20 2015-12-09 株式会社デンソー 燃料噴射弁および燃料噴射弁の取付方法
CN103047065B (zh) * 2012-12-28 2014-12-10 潍柴动力股份有限公司 一种用于柴油机喷油器的压紧装置
DE102013200909A1 (de) * 2013-01-22 2014-07-24 Robert Bosch Gmbh Brennstoffeinspritzanlage mit einer Brennstoff führenden Komponente, einem Brennstoffeinspritzventil und einem Verbindungselement
DE102013200935A1 (de) * 2013-01-22 2014-07-24 Robert Bosch Gmbh Brennstoffeinspritzanlage mit einer Brennstoff führenden Komponente, einem Brennstoffeinspritzventil und einem Verbindungselement
KR101718270B1 (ko) * 2013-02-18 2017-03-20 엔오케이 가부시키가이샤 밀봉구조
EP2821630A1 (fr) * 2013-07-05 2015-01-07 Delphi International Operations Luxembourg S.à r.l. Connexion de fluide haute pression
US10036355B2 (en) * 2013-08-08 2018-07-31 Cummins Inc. Heat transferring fuel injector combustion seal with load bearing capability
DE102014217555A1 (de) 2014-09-03 2016-03-03 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102014225976A1 (de) 2014-12-16 2016-06-16 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
DE102014225988A1 (de) 2014-12-16 2016-06-16 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102015217500A1 (de) 2015-09-14 2017-03-16 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
EP3353409B1 (fr) * 2015-09-24 2021-05-19 Vitesco Technologies GmbH Ensemble rampe de carburant et procédé de fabrication d'un tel ensemble
US20170241550A1 (en) * 2016-02-18 2017-08-24 Caterpillar Inc. Seal for fuel injector system
CN106523230B (zh) * 2016-11-17 2018-12-25 安徽江淮汽车集团股份有限公司 一种喷油器压块螺栓的辅助密封结构
DE102016225956A1 (de) 2016-12-22 2018-06-28 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102017218008A1 (de) 2017-10-10 2019-04-11 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102017218007A1 (de) 2017-10-10 2019-04-11 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102017218002A1 (de) 2017-10-10 2019-04-11 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102017220248A1 (de) 2017-11-14 2019-05-16 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
US20190162145A1 (en) * 2017-11-28 2019-05-30 GM Global Technology Operations LLC Fuel injector assembly
DE102018200335A1 (de) * 2018-01-11 2019-07-11 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
DE102018216970A1 (de) * 2018-10-04 2020-04-09 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
US11136953B2 (en) * 2018-11-20 2021-10-05 Delphi Technologies Ip Limited Fuel injector with a locating pin, internal combustion engine using the same, and method
US11174825B2 (en) * 2019-02-11 2021-11-16 Caterpillar Inc. Seal configuration for fuel injector
US10746145B1 (en) * 2019-05-08 2020-08-18 Delphi Technologies Ip Limited Isolator for fuel injector
JP7462436B2 (ja) 2020-03-09 2024-04-05 Nok株式会社 密封構造
DE102020214113A1 (de) 2020-11-10 2022-05-12 Robert Bosch Gesellschaft mit beschränkter Haftung Brennstoffeinspritzvorrichtung
US20230349467A1 (en) * 2020-11-20 2023-11-02 Nok Corporation Sealing structure and assembling method of sealing structure
RU204080U1 (ru) * 2020-12-31 2021-05-05 Иван Иванович Данилович Узел крепления свечного колодца системы зажигания в головке блока цилиндров
CN112945564B (zh) * 2021-02-09 2022-04-08 湖南汉能科技有限公司 燃油喷嘴性能试验器的实验安装平台
JP7476827B2 (ja) * 2021-03-12 2024-05-01 トヨタ自動車株式会社 燃料噴射装置用制振インシュレータ
US11644000B2 (en) * 2021-08-25 2023-05-09 Caterpillar Inc. Fuel injector clamp assembly for offset clamping bolt and cylinder head assembly with same
DE102021214900A1 (de) 2021-12-22 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Ventil zum Zumessen eines Fluids
DE102021214902A1 (de) 2021-12-22 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102022001464B4 (de) * 2022-04-26 2023-11-02 Deutz Aktiengesellschaft Zylinderkopf für eine Brennkraftmaschine

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938193A (en) 1987-06-15 1990-07-03 Stanadyne Automotive Corp. Fuel injection nozzle
DE4240514A1 (de) 1992-12-02 1994-06-09 Kloeckner Humboldt Deutz Ag Einspritzventil mit verliersicherer Dichtscheibe
US5417373A (en) * 1994-02-10 1995-05-23 Siemens Automotive L.P. Electromagnet for valves
US5544816A (en) * 1994-08-18 1996-08-13 Siemens Automotive L.P. Housing for coil of solenoid-operated fuel injector
US5697345A (en) * 1994-12-28 1997-12-16 Cummins Engine Company, Inc. Clamping load distributor for a fuel injector
US5706786A (en) * 1994-12-28 1998-01-13 Cummins Engine Company, Inc. Distortion reducing load ring for a fuel injector
JPH08312503A (ja) 1995-03-10 1996-11-26 Mitsubishi Motors Corp 固定対象物、特に筒内噴射型内燃機関用インジェクタの取付構造
US5566658A (en) * 1995-04-21 1996-10-22 Cummins Engine Company, Inc. Clamping load distributor and top stop for a fuel injector
US5692723A (en) * 1995-06-06 1997-12-02 Sagem-Lucas, Inc. Electromagnetically actuated disc-type valve
JP3384692B2 (ja) 1996-07-31 2003-03-10 三菱電機株式会社 筒内噴射用燃料噴射弁
JPH10115267A (ja) * 1996-10-11 1998-05-06 Hitachi Ltd 燃料噴射弁
DE19712590A1 (de) * 1997-03-26 1998-10-01 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil
DE19735665A1 (de) 1997-06-25 1999-01-07 Bosch Gmbh Robert Brennstoffeinspritzanlage
JPH1182241A (ja) * 1997-09-01 1999-03-26 Nissan Motor Co Ltd 内燃機関における燃料噴射弁取付装置
DE19743103A1 (de) 1997-09-30 1999-04-01 Bosch Gmbh Robert Wärmeschutzhülse
JPH11210886A (ja) * 1998-01-23 1999-08-03 Nok Corp ガスケット
JPH11230008A (ja) * 1998-02-18 1999-08-24 Mitsubishi Electric Corp 筒内噴射用燃料噴射弁
DE10043084A1 (de) * 2000-09-01 2002-03-14 Bosch Gmbh Robert Spannelement für ein Brennstoffeinspritzventil und Brennstoffeinspritzanlage
US6431152B1 (en) * 2001-03-30 2002-08-13 International Engine Intellectual Property Company, L.L.C. Injector hold down clamp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0194776A2 *

Also Published As

Publication number Publication date
CN1394256A (zh) 2003-01-29
WO2001094776A2 (fr) 2001-12-13
KR20020020803A (ko) 2002-03-15
EP1482168B1 (fr) 2007-07-25
WO2001094776A3 (fr) 2002-08-01
EP1482168A1 (fr) 2004-12-01
US20050016501A1 (en) 2005-01-27
US7261246B2 (en) 2007-08-28
US20020162538A1 (en) 2002-11-07
BR0106711A (pt) 2002-04-16
EP1290338B1 (fr) 2004-12-01
KR100744961B1 (ko) 2007-08-02
DE10027662A1 (de) 2001-12-06
DE50104696D1 (de) 2005-01-05
DE50112774D1 (de) 2007-09-06
JP2003536019A (ja) 2003-12-02
US6811102B2 (en) 2004-11-02

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