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EP1591640A1 - Cooling nozzle for a hot spot of a piston of an internal combustion engine for a motor car - Google Patents

Cooling nozzle for a hot spot of a piston of an internal combustion engine for a motor car Download PDF

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Publication number
EP1591640A1
EP1591640A1 EP05290843A EP05290843A EP1591640A1 EP 1591640 A1 EP1591640 A1 EP 1591640A1 EP 05290843 A EP05290843 A EP 05290843A EP 05290843 A EP05290843 A EP 05290843A EP 1591640 A1 EP1591640 A1 EP 1591640A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
orifice
side wall
diameter
outlet
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
EP05290843A
Other languages
German (de)
French (fr)
Other versions
EP1591640B1 (en
Inventor
Bertrand Paris
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ARDEPA
Original Assignee
Ardepa
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Filing date
Publication date
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Publication of EP1591640A1 publication Critical patent/EP1591640A1/en
Application granted granted Critical
Publication of EP1591640B1 publication Critical patent/EP1591640B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the present invention relates to point cooling jets hot piston engine of motor vehicle or the like which comprise, in the engine block, a high pressure circuit of a fluid of lubrication, such as oil or the like.
  • jets are essentially designed to be connected in bypassing the high-pressure circuit of the engine lubrication fluid.
  • they comprise a connector adapted to be connected to this high pressure circuit and an ejection nozzle connected to the connector by a conduit.
  • the fluid under pressure is then ejected at the outlet of the nozzle being sprayed and directed towards the hot spot piston to cool it.
  • the sprayed fluid is then flushed out in the cover of this lubricating fluid, this tarpaulin serving in particular to reserve and power source for the high pressure circuit.
  • the present invention aims to achieve a nozzle of cooling, especially of a hot spot of a vehicle engine piston automobile or the like comprising, in the engine block, a high-pressure circuit a lubricating fluid, which at least partially overcomes the disadvantages aforementioned sprinklers of the prior art, having a cost price of relatively low manufacturing, because it is easier to manufacture, especially in large series, while giving total satisfaction in terms of reliability.
  • the present invention relates to a nozzle of cooling of a hot spot of a motor vehicle engine piston comprising, in the engine block, a high pressure circuit of a fluid of lubrication, said nozzle comprising a connection tip comprising a through-hole with an inlet and an outlet, a connecting body defining a fluidic conduit whose first end is fluidly connected at the exit of the through-hole, and an ejection nozzle comprising a supply inlet fluidly sealed to the second end of the fluidic conduit, said nozzle being characterized by the fact that it comprises in addition to locking means in translation of the tip when it is plugged into an orifice made in the engine block, said orifice communicating with the circuit high pressure, and a seal mounted around the nozzle adapted to cooperate with the side wall of the engine block when said tip is plugged into the orifice, to achieve a sealed passage between the outer side wall of the mouthpiece and the inner wall of the orifice.
  • the object of the invention comprises "at least one" element having a given function
  • the described embodiment may include several of these elements.
  • the embodiments of the object according to the invention such illustrated with several elements of identical function and if, in the description, it is not specified that the object according to this invention obligatorily include a particular number of these elements, the object of the invention may be defined as having "at least one" of these elements.
  • the nozzle according to the invention allows to cool, for example, a hot low point of a motor vehicle engine piston having, in the engine block B m , a high pressure circuit of a lubricating fluid.
  • the nozzle comprises, with reference more particularly to FIGS. 1 to 5, a connection tip 1 comprising a through-hole 2 with an inlet 3 and an outlet 4, a connecting body 5 defining a fluid duct 6, one of which first end 7 is fluidly sealed to the outlet 4 of the through-hole, and an ejection nozzle 8 having a feed inlet 9 fluidly sealed to the second end 10 of the fluid conduit.
  • the cooling nozzle further comprises translational locking means 11 of the nozzle 1 when it is plugged into an orifice O ri made in the engine block B m , this orifice communicating with the high circuit lubricant fluid pressure, and a seal 12 mounted around the nozzle 1 adapted to cooperate with the side wall of the engine block B m when the tip is plugged into the orifice O ri , to thereby achieve a a sealed passage between the outer side wall 13 of the nozzle and the inner wall of this orifice.
  • the translation locking means 11 of the nozzle 1 in the orifice O ri may be constituted by at least one of the means defined below.
  • these locking means 11 of the nozzle 1 comprise a split elastic ring 20, the slot being visible in Figure 2 and referenced 17.
  • This ring is mounted around the end piece by enclosing it, the outer diameter of the ring being slightly greater than that of the orifice O r r so that the end piece carrying the ring is adapted to be plugged into force in the orifice O ri , the ring is closing on itself by entering the orifice to be stuck by the elastic reaction that tends to open it.
  • FIG. 6 A second embodiment of these locking means 11 of the nozzle 1 is illustrated in FIG. 6, in which they comprise at least one cut resilient ring 18 disposed in a circular groove 19 made in the outer lateral wall 13 of the tip 1, the outside diameter of the rod being greater than the diameter of the orifice O ri .
  • the means blocking 11 of the endpiece 1 comprise at least one elastic tab 21, and advantageously for example four, of which a first end 22 is integral, for example being anchored, or by welding, molding, etc., ..., in the outer side wall 13 of the nozzle 1 and whose second free end 23 turned towards the part 24 of the mouthpiece having the exit 4 of the breakthrough through 2 is outside the cylindrical volume defined by the side wall outside of the mouthpiece.
  • the elastic tabs 21 when the tip is plugged into the orifice O ri , the elastic tabs 21 are folded against the side wall 13 of the nozzle, and then deploy as soon as they have passed the lower edge 29 of the groove G o made in the inner wall of the orifice O ri . In this position, as shown in Figure 7, the free ends 23 of the elastic tabs 21 abut against the lower edge 29 of the groove Go, preventing the tip 1 out of the orifice O ri .
  • FIG. 8 A fourth embodiment of the locking means 11 of the nozzle is illustrated in FIG. 8, in which they comprise a concave disc-shaped elastic clip 25 having a central opening 26 of a diameter smaller than that of the lateral wall. 13 of the nozzle, the outer diameter 27 of the disc 25 being greater than the diameter of the orifice O ri , the disc 25 being anchored in the outer side wall 13 of the nozzle 1 so that its concavity 28 is turned towards the portion 24 of the nozzle having the outlet 4 of the through-hole 2.
  • This concave disc 25 can thus be relatively easily pushed into the orifice O ri with the mouthpiece, but prevents the mouthpiece from coming out of the orifice because, in this sense, its outer edge diameter 27 is bent against the inner wall of the orifice O ri .
  • the connecting body 5 consists of a chute 30, or equivalent, defining a groove 31 opening at both ends thereof 32, 33 and open laterally, a cover 34 covering the chute 30 for sealingly closing the lateral opening of the groove 31 and thus achieve the sealed fluidic conduit 6 defined above which both ends 7, 10 are constituted by the two opposite ends 32, 33 of the groove 31, and means for securing the lid 34 with the chute 30.
  • the means for securing the cover 34 with the chute 30 are constituted by a weld including ultra son.
  • the nozzle 1, the chute 30 and the nozzle 8 are made in one single piece, for example, in a manner known per se, by molding.
  • the cooling nozzle comprises valve means 40 mounted in cooperation with the exit 4 of the through breakthrough 2 and the first end 7 of the fluidic conduit 6, these valve means being arranged to allow a fluidic passage of this outlet 4 towards this first end 7.
  • the nozzle is made so that the chute 30 and the tip 1 are located on the same side of the plane 41 of the cover 34, the axis 42 of the through-hole 2 and the axis 43 of the fluidic duct 6 forming between them substantially a right angle.
  • valve means 40 consist of a valve ball 44 adapted to cooperate with a valve seat 45 made at the outlet 4 of the through-hole 2, the diameter of the valve ball being greater than the diameter of the valve seat, and a linear spring 46, one end 47 bears on the ball valve 44 and the other end 48 passes through the groove 31 and bears on the face 49 of the cover 34 facing this groove.
  • the nozzle comprises a seal 12 mounted around the nozzle 1 adapted to cooperate with the side wall of the engine block B m when the tip is plugged into the orifice O ri , to achieve this is a sealed passage between the outer side wall 13 of the nozzle and the inner wall of this orifice.
  • the seal 12 is mounted around the end piece 1 in a circular groove 50 made in the outer lateral wall 13 of the end piece so as to be able to cooperate with the side wall of the orifice O ri when the tip is plugged into the orifice O ri to provide a sealed passage between the outer side wall of the nozzle and the inner wall of the orifice O ri , the outer diameter of the seal 12 being greater than the diameter of the orifice O ri when this seal is not subjected to any compression.
  • the seal 12 is mounted around the nozzle 1 in a circular groove 60 formed in the side wall 61 of the connecting body 5 to be able to cooperate with the edge 62 of the orifice O ri when the nozzle is fully inserted into this orifice O ri to achieve a sealed passage between the side wall of the connecting body and the edge of the orifice.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Compressor (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The nozzle has connection body (5) defining a fluidic duct (6) whose one end is connected to an outlet of a traversing bore of a connection chuck (1), and another end to a supply inlet (9) of a propelling nozzle (8). A sealing gasket (12) mounted around the chuck cooperates with a side wall of an engine block, when the chuck is plugged in block`s orifice for sealed passage between chuck`s outer side wall and orifice`s inner wall.

Description

La présente invention concerne les gicleurs de refroidissement d'un point chaud de pistons de moteurs de véhicules automobiles ou analogue qui comportent, dans le bloc moteur, un circuit haute pression d'un fluide de lubrification, comme de l'huile ou analogue.The present invention relates to point cooling jets hot piston engine of motor vehicle or the like which comprise, in the engine block, a high pressure circuit of a fluid of lubrication, such as oil or the like.

On sait que, dans certains moteurs à explosion de véhicules automobiles, les pistons, notamment dans leur partie haute, sont soumis à des températures très élevées qui peuvent nuire à leur durée de vie. Aussi, ont été mis au point des gicleurs de refroidissement d'un point bas chaud de ces pistons.We know that in some motor vehicle engines, the pistons, especially in their upper part, are subjected to temperatures very high that can affect their life. Also, have been developed Cooling jets from a hot low point of these pistons.

Ces gicleurs sont essentiellement conçus pour être connectés en dérivation sur le circuit haute pression du fluide de lubrification du moteur. Pour cela, ils comportent un connecteur apte à être relié à ce circuit haute pression et une buse d'éjection reliée au connecteur par un conduit. Le fluide sous pression est alors éjecté en sortie de buse en étant pulvérisé et dirigé vers le point chaud du piston pour le refroidir. Le fluide pulvérisé est ensuite récupéré par écoulement dans la bâche de ce fluide lubrificateur, cette bâche servant notamment de réserve et source d'alimentation pour le circuit haute pression.These jets are essentially designed to be connected in bypassing the high-pressure circuit of the engine lubrication fluid. For this, they comprise a connector adapted to be connected to this high pressure circuit and an ejection nozzle connected to the connector by a conduit. The fluid under pressure is then ejected at the outlet of the nozzle being sprayed and directed towards the hot spot piston to cool it. The sprayed fluid is then flushed out in the cover of this lubricating fluid, this tarpaulin serving in particular to reserve and power source for the high pressure circuit.

Les gicleurs qui ont été réalisés jusqu'à ce jour ont une structure relativement complexe qui les rend d'un prix de revient relativement élevé, ce qui est un gros inconvénient compte tenu des quantités importantes de ce type de gicleurs qu'il est nécessaire de produire, ne serait que pour la fabrication des véhicules automobiles.The sprinklers that have been made to date have a structure relatively complex, which makes them relatively expensive, which is a big disadvantage considering the significant amounts of this type of jets that it is necessary to produce, would only be for the manufacture of motor vehicles.

Aussi, la présente invention a-t-elle pour but de réaliser un gicleur de refroidissement, notamment d'un point chaud d'un piston de moteur de véhicule automobile ou analogue comportant, dans le bloc moteur un circuit haute pression d'un fluide de lubrification, qui pallie au moins en partie les inconvénients mentionnés ci-avant des gicleurs de l'art antérieur, en ayant un coût de revient de fabrication relativement faible, car plus facile à fabriquer notamment en grande série, tout en donnant totale satisfaction sur le plan de la fiabilité.Also, the present invention aims to achieve a nozzle of cooling, especially of a hot spot of a vehicle engine piston automobile or the like comprising, in the engine block, a high-pressure circuit a lubricating fluid, which at least partially overcomes the disadvantages aforementioned sprinklers of the prior art, having a cost price of relatively low manufacturing, because it is easier to manufacture, especially in large series, while giving total satisfaction in terms of reliability.

Plus précisément, la présente invention a pour objet un gicleur de refroidissement d'un point chaud d'un piston de moteur de véhicule automobile comportant, dans le bloc moteur, un circuit haute pression d'un fluide de lubrification, ledit gicleur comportant un embout de connexion comprenant une percée traversante avec une entrée et une sortie, un corps de liaison définissant un conduit fluidique dont une première extrémité est reliée de façon fluidique étanche à la sortie de la percée traversante, et une buse d'éjection comportant une entrée d'alimentation reliée de façon fluidique étanche à la seconde extrémité du conduit fluidique, ledit gicleur étant caractérisé par le fait qu'il comporte en outre des moyens de blocage en translation de l'embout quand il est enfiché dans un orifice réalisé dans le bloc moteur, ledit orifice communiquant avec le circuit haute pression, et un joint d'étanchéité monté autour de l'embout apte à coopérer avec la paroi latérale du bloc moteur quand ledit embout est enfiché dans l'orifice, pour réaliser un passage étanche entre la paroi latérale extérieure de l'embout et la paroi intérieure de l'orifice.More specifically, the present invention relates to a nozzle of cooling of a hot spot of a motor vehicle engine piston comprising, in the engine block, a high pressure circuit of a fluid of lubrication, said nozzle comprising a connection tip comprising a through-hole with an inlet and an outlet, a connecting body defining a fluidic conduit whose first end is fluidly connected at the exit of the through-hole, and an ejection nozzle comprising a supply inlet fluidly sealed to the second end of the fluidic conduit, said nozzle being characterized by the fact that it comprises in addition to locking means in translation of the tip when it is plugged into an orifice made in the engine block, said orifice communicating with the circuit high pressure, and a seal mounted around the nozzle adapted to cooperate with the side wall of the engine block when said tip is plugged into the orifice, to achieve a sealed passage between the outer side wall of the mouthpiece and the inner wall of the orifice.

D'autres caractéristiques et avantages de l'invention apparaítront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif mais nullement limitatif, dans lesquels :

  • La figure 1 représente, vu de dessus, un premier mode de réalisation du gicleur selon l'invention, de refroidissement d'un point chaud bas d'un piston de moteur de véhicule automobile,
  • Les figures 2 à 5 représentent quatre vues en coupe du gicleur de refroidissement selon l'invention dans le mode de réalisation représenté sur la figure 1, la figure 2 étant une vue en coupe longitudinale référencée A-A sur la figure 1, les trois autres figures 3 à 5 étant trois vues en coupe transversale respectivement référencées C-C, D-D et B-B sur cette figure 1, et
  • Les figures 6 à 8 représentent une vue en coupe transversale d'une partie du gicleur de refroidissement selon l'invention, selon trois autres modes de réalisation.
    • Other features and advantages of the invention will become apparent from the following description given with reference to the accompanying drawings for illustrative but not limiting purposes, in which:
  • FIG. 1 represents, seen from above, a first embodiment of the nozzle according to the invention, of cooling a low hot spot of a motor vehicle engine piston,
  • FIGS. 2 to 5 show four cross-sectional views of the cooling nozzle according to the invention in the embodiment shown in FIG. 1, FIG. 2 being a longitudinal sectional view referenced AA in FIG. 1, the other three FIGS. at 5 being three cross-sectional views respectively referenced CC, DD and BB in this figure 1, and
  • Figures 6 to 8 show a cross-sectional view of a portion of the cooling nozzle according to the invention, according to three other embodiments.

    • Il est tout d'abord précisé que, sur les figures, les mêmes références désignent les mêmes éléments, quelle que soit la figure sur laquelle elles apparaissent et quelle que soit la forme de représentation de ces éléments. De même, si des éléments ne sont pas spécifiquement référencés sur l'une des figures, leurs références peuvent être aisément retrouvées en se reportant à une autre figure. It is first of all specified that, in the figures, the same references designate the same elements, whatever the figure on which they appear and regardless of the form of representation of these elements. Of same, if elements are not specifically referenced on any of the figures, their references can easily be found by referring to a other figure.

    Il est aussi précisé que les figures représentent essentiellement quatre modes de réalisation de l'objet selon l'invention, mais qu'il peut exister d'autres modes de réalisation qui répondent à la définition de cette invention.It is also stated that the figures represent essentially four embodiments of the object according to the invention, but that there may be other embodiments that meet the definition of this invention.

    Il est en outre précisé que, lorsque, selon la définition de l'invention, l'objet de l'invention comporte "au moins un" élément ayant une fonction donnée, le mode de réalisation décrit peut comporter plusieurs de ces éléments. Réciproquement, si les modes de réalisation de l'objet selon l'invention tel qu'illustrés comportent plusieurs éléments de fonction identique et si, dans la description, il n'est pas spécifié que l'objet selon cette invention doit obligatoirement comporter un nombre particulier de ces éléments, l'objet de l'invention pourra être défini comme comportant "au moins un" de ces éléments.It is further specified that where, according to the definition of the invention, the object of the invention comprises "at least one" element having a given function, the described embodiment may include several of these elements. Conversely, if the embodiments of the object according to the invention such illustrated with several elements of identical function and if, in the description, it is not specified that the object according to this invention obligatorily include a particular number of these elements, the object of the invention may be defined as having "at least one" of these elements.

    Il est enfin précisé que lorsque, dans la présente description, une expression définit à elle seule, sans mention particulière spécifique la concernant, un ensemble de caractéristiques structurelles, [par exemple Σ = Σ(ρ, τ, ε, ...)], ces caractéristiques peuvent être prises, pour la définition de l'objet de la protection demandée, quand cela est techniquement possible, soit séparément, [par exemple ε, et/ou τ, et/ou ρ, ...], soit en combinaison totale et/ou partielle, [par exemple E(ε, τ, ρ), et/ou Σ(ε, τ), et/ou Σ(τ, ρ), et/ou Σ(ε, ρ)].Finally, it is clarified that where, in the present description, a expression alone defines, without particular specific mention concerning it, a set of structural characteristics, [for example Σ = Σ (ρ, τ, ε, ...)], these characteristics can be taken, for the definition of the object of protection requested, when technically possible, either separately, example ε, and / or τ, and / or ρ, ...], either in total and / or partial combination, [by example E (ε, τ, ρ), and / or Σ (ε, τ), and / or Σ (τ, ρ), and / or Σ (ε, ρ)].

    Le gicleur selon l'invention permet de refroidir, par exemple, un point bas chaud d'un piston de moteur de véhicule automobile comportant, dans le bloc moteur Bm, un circuit haute pression d'un fluide de lubrification.The nozzle according to the invention allows to cool, for example, a hot low point of a motor vehicle engine piston having, in the engine block B m , a high pressure circuit of a lubricating fluid.

    Le gicleur comporte, par référence plus particulièrement aux figures 1 à 5, un embout de connexion 1 comprenant une percée traversante 2 avec un entrée 3 et une sortie 4, un corps de liaison 5 définissant un conduit fluidique 6 dont une première extrémité 7 est reliée de façon fluidique étanche à la sortie 4 de la percée traversante, et une buse d'éjection 8 comportant une entrée d'alimentation 9 reliée de façon fluidique étanche à la seconde extrémité 10 du conduit fluidique.The nozzle comprises, with reference more particularly to FIGS. 1 to 5, a connection tip 1 comprising a through-hole 2 with an inlet 3 and an outlet 4, a connecting body 5 defining a fluid duct 6, one of which first end 7 is fluidly sealed to the outlet 4 of the through-hole, and an ejection nozzle 8 having a feed inlet 9 fluidly sealed to the second end 10 of the fluid conduit.

    En référence à toutes les figures, le gicleur de refroidissement comporte en outre des moyens de blocage en translation 11 de l'embout 1 quand il est enfiché dans un orifice Ori réalisé dans le bloc moteur Bm, cet orifice communiquant avec le circuit haute pression de fluide lubrifiant, et un joint d'étanchéité 12 monté autour de l'embout 1 apte à coopérer avec la paroi latérale du bloc moteur Bm quand l'embout est enfiché dans l'orifice Ori, pour réaliser de ce fait un passage étanche entre la paroi latérale extérieure 13 de l'embout et la paroi intérieure de cet orifice.Referring to all the figures, the cooling nozzle further comprises translational locking means 11 of the nozzle 1 when it is plugged into an orifice O ri made in the engine block B m , this orifice communicating with the high circuit lubricant fluid pressure, and a seal 12 mounted around the nozzle 1 adapted to cooperate with the side wall of the engine block B m when the tip is plugged into the orifice O ri , to thereby achieve a a sealed passage between the outer side wall 13 of the nozzle and the inner wall of this orifice.

    Les moyens de blocage en translation 11 de l'embout 1 dans l'orifice Ori peuvent être constitués par au moins l'un des moyens définis ci-après.The translation locking means 11 of the nozzle 1 in the orifice O ri may be constituted by at least one of the means defined below.

    Dans un premier mode de réalisation illustré sur les figures 1 à 5, ces moyens de blocage 11 de l'embout 1 comportent une bague élastique fendue 20, la fente étant visible sur la figure 2 et référencée 17. Cette bague est montée autour de l'embout en l'enserrant, le diamètre extérieur de la bague étant légèrement supérieur à celui de l'orifice Ori de façon que l'embout portant la bague soit apte à être enfiché en force dans l'orifice Ori, la bague se refermant sur elle-même en rentrant dans l'orifice pour y être coincée par la réaction élastique qui tend à l'ouvrir.In a first embodiment illustrated in Figures 1 to 5, these locking means 11 of the nozzle 1 comprise a split elastic ring 20, the slot being visible in Figure 2 and referenced 17. This ring is mounted around the end piece by enclosing it, the outer diameter of the ring being slightly greater than that of the orifice O r r so that the end piece carrying the ring is adapted to be plugged into force in the orifice O ri , the ring is closing on itself by entering the orifice to be stuck by the elastic reaction that tends to open it.

    Un deuxième mode de réalisation de ces moyens de blocage 11 de l'embout 1 est illustré sur la figure 6, dans lequel ils comportent au moins un jonc élastique coupé 18 disposé dans une saignée circulaire 19 réalisée dans la paroi latérale extérieure 13 de l'embout 1, le diamètre extérieur du jonc étant supérieur au diamètre de l'orifice Ori.A second embodiment of these locking means 11 of the nozzle 1 is illustrated in FIG. 6, in which they comprise at least one cut resilient ring 18 disposed in a circular groove 19 made in the outer lateral wall 13 of the tip 1, the outside diameter of the rod being greater than the diameter of the orifice O ri .

    Selon un troisième mode de réalisation illustré sur la figure 7, les moyens de blocage 11 de l'embout 1 comportent au moins une patte élastique 21, et avantageusement par exemple quatre, dont une première extrémité 22 est solidaire, en étant par exemple ancrée, ou par soudage, moulage, etc., ..., dans la paroi latérale extérieure 13 de l'embout 1 et dont la seconde extrémité libre 23 tournée vers la partie 24 de l'embout comportant la sortie 4 de la percée traversante 2 est en dehors du volume cylindrique défini par la paroi latérale extérieure de l'embout.According to a third embodiment illustrated in FIG. 7, the means blocking 11 of the endpiece 1 comprise at least one elastic tab 21, and advantageously for example four, of which a first end 22 is integral, for example being anchored, or by welding, molding, etc., ..., in the outer side wall 13 of the nozzle 1 and whose second free end 23 turned towards the part 24 of the mouthpiece having the exit 4 of the breakthrough through 2 is outside the cylindrical volume defined by the side wall outside of the mouthpiece.

    Dans ce troisième mode de réalisation, lorsque l'embout est enfiché dans l'orifice Ori, les pattes élastiques 21 se rabattent contre la paroi latérale 13 de l'embout, puis se déploient dès qu'elles ont dépassé le bord inférieur 29 de la gorge Go réalisée dans la paroi interne de l'orifice Ori. Dans cette position, comme illustré sur la figure 7, les extrémité libres 23 des pattes élastiques 21 viennent buter contre ce bord inférieur 29 de la gorge Go, empêchant l'embout 1 de ressortir de l'orifice Ori.In this third embodiment, when the tip is plugged into the orifice O ri , the elastic tabs 21 are folded against the side wall 13 of the nozzle, and then deploy as soon as they have passed the lower edge 29 of the groove G o made in the inner wall of the orifice O ri . In this position, as shown in Figure 7, the free ends 23 of the elastic tabs 21 abut against the lower edge 29 of the groove Go, preventing the tip 1 out of the orifice O ri .

    Un quatrième mode de réalisation des moyens de blocage 11 de l'embout est illustré sur la figure 8, dans lequel ils comportent un clip élastique en forme de disque concave 25 comportant une ouverture centrale 26 d'un diamètre inférieur à celui de la paroi latérale extérieure 13 de l'embout, le diamètre extérieur 27 du disque 25 étant supérieur au diamètre de l'orifice Ori, le disque 25 étant ancré dans la paroi latérale extérieure 13 de l'embout 1 de façon que sa concavité 28 soit tournée vers la partie 24 de l'embout comportant la sortie 4 de la percée traversante 2.A fourth embodiment of the locking means 11 of the nozzle is illustrated in FIG. 8, in which they comprise a concave disc-shaped elastic clip 25 having a central opening 26 of a diameter smaller than that of the lateral wall. 13 of the nozzle, the outer diameter 27 of the disc 25 being greater than the diameter of the orifice O ri , the disc 25 being anchored in the outer side wall 13 of the nozzle 1 so that its concavity 28 is turned towards the portion 24 of the nozzle having the outlet 4 of the through-hole 2.

    Ce disque concave 25 peut donc être relativement facilement enfoncé dans l'orifice Ori avec l'embout, mais empêche l'embout de ressortir de l'orifice car, dans ce sens, son bord externe de diamètre 27 s'arc-boute contre la paroi interne de l'orifice Ori.This concave disc 25 can thus be relatively easily pushed into the orifice O ri with the mouthpiece, but prevents the mouthpiece from coming out of the orifice because, in this sense, its outer edge diameter 27 is bent against the inner wall of the orifice O ri .

    En revenant plus particulièrement aux figures 1 à 5, selon une autre caractéristique de l'invention, le corps de liaison 5 est constitué d'une goulotte 30, ou équivalente, définissant une gorge 31 débouchant à ses deux extrémités opposées 32, 33 et ouverte latéralement, d'un couvercle 34 recouvrant la goulotte 30 pour fermer de façon étanche l'ouverture latérale de la gorge 31 et ainsi réaliser le conduit fluidique étanche 6 défini ci-avant dont les deux extrémités 7, 10 sont constituées par les deux extrémités opposées 32, 33 de la gorge 31, et de moyens pour solidariser le couvercle 34 avec la goulotte 30.Going back more particularly to FIGS. 1 to 5, according to another characteristic of the invention, the connecting body 5 consists of a chute 30, or equivalent, defining a groove 31 opening at both ends thereof 32, 33 and open laterally, a cover 34 covering the chute 30 for sealingly closing the lateral opening of the groove 31 and thus achieve the sealed fluidic conduit 6 defined above which both ends 7, 10 are constituted by the two opposite ends 32, 33 of the groove 31, and means for securing the lid 34 with the chute 30.

    De façon préférentielle, quand la goulotte et le couvercle sont tous les deux en un matériau plastique, les moyens pour solidariser le couvercle 34 avec la goulotte 30 sont constitués par une soudure notamment par ultra son.Preferably, when the chute and the lid are both in a plastic material, the means for securing the cover 34 with the chute 30 are constituted by a weld including ultra son.

    De façon avantageuse, pour réduire encore le coût de fabrication de ce genre de gicleur, l'embout 1, la goulotte 30 et la buse 8 sont réalisés en une seule pièce, par exemple, de façon connue en elle-même, par moulage.Advantageously, to further reduce the manufacturing cost of this kind of nozzle, the nozzle 1, the chute 30 and the nozzle 8 are made in one single piece, for example, in a manner known per se, by molding.

    Comme illustré sur les figures 2 et 4, et partiellement sur les figures 6 à 8, le gicleur de refroidissement comporte des moyens de clapet 40 montés en coopération avec la sortie 4 de la percée traversante 2 et la première extrémité 7 du conduit fluidique 6, ces moyens de clapet étant agencés pour autoriser un passage fluidique de cette sortie 4 vers cette première extrémité 7.As illustrated in FIGS. 2 and 4, and partially in FIGS. 6 to 8, the cooling nozzle comprises valve means 40 mounted in cooperation with the exit 4 of the through breakthrough 2 and the first end 7 of the fluidic conduit 6, these valve means being arranged to allow a fluidic passage of this outlet 4 towards this first end 7.

    Aussi de façon préférentielle, le gicleur est réalisé de façon que la goulotte 30 et l'embout 1 soient situés d'un même côté du plan 41 du couvercle 34, l'axe 42 de la percée traversante 2 et l'axe 43 du conduit fluidique 6 faisant entre eux sensiblement un angle droit. Also preferably, the nozzle is made so that the chute 30 and the tip 1 are located on the same side of the plane 41 of the cover 34, the axis 42 of the through-hole 2 and the axis 43 of the fluidic duct 6 forming between them substantially a right angle.

    Dans ce cas, comme plus particulièrement illustré sur les figures 2 et 4, les moyens de clapet 40 sont constitués d'une bille de clapet 44 apte à coopérer avec un siège de clapet 45 réalisé à la sortie 4 de la percée traversante 2, le diamètre de la bille de clapet étant supérieur au diamètre du siège de clapet, et d'un ressort linéaire 46 dont une extrémité 47 est en appui sur la bille de clapet 44 et l'autre extrémité 48 traverse la gorge 31 et vient en appui sur la face 49 du couvercle 34 tournée vers cette gorge.In this case, as more particularly illustrated in FIGS. 2 and 4, the valve means 40 consist of a valve ball 44 adapted to cooperate with a valve seat 45 made at the outlet 4 of the through-hole 2, the diameter of the valve ball being greater than the diameter of the valve seat, and a linear spring 46, one end 47 bears on the ball valve 44 and the other end 48 passes through the groove 31 and bears on the face 49 of the cover 34 facing this groove.

    Comme mentionné ci-avant, le gicleur comporte un joint d'étanchéité 12 monté autour de l'embout 1 apte à coopérer avec la paroi latérale du bloc moteur Bm quand l'embout est enfiché dans l'orifice Ori, pour réaliser de ce fait un passage étanche entre la paroi latérale extérieure 13 de l'embout et la paroi intérieure de cet orifice.As mentioned above, the nozzle comprises a seal 12 mounted around the nozzle 1 adapted to cooperate with the side wall of the engine block B m when the tip is plugged into the orifice O ri , to achieve this is a sealed passage between the outer side wall 13 of the nozzle and the inner wall of this orifice.

    Dans les modes de réalisation en accord avec les figures 1 à 7, le joint d'étanchéité 12 est monté autour de l'embout 1 dans une rainure circulaire 50 réalisée dans la paroi latérale extérieure 13 de l'embout pour être apte à coopérer avec la paroi latérale de l'orifice Ori quand l'embout est enfiché dans l'orifice Ori pour réaliser un passage étanche entre la paroi latérale extérieure de l'embout et la paroi intérieure de l'orifice Ori, le diamètre extérieur du joint d'étanchéité 12 étant supérieur au diamètre de l'orifice Ori quand ce joint n'est soumis à aucune compression.In the embodiments in accordance with FIGS. 1 to 7, the seal 12 is mounted around the end piece 1 in a circular groove 50 made in the outer lateral wall 13 of the end piece so as to be able to cooperate with the side wall of the orifice O ri when the tip is plugged into the orifice O ri to provide a sealed passage between the outer side wall of the nozzle and the inner wall of the orifice O ri , the outer diameter of the seal 12 being greater than the diameter of the orifice O ri when this seal is not subjected to any compression.

    Dans le mode de réalisation en accord avec la figure 8, le joint d'étanchéité 12 est monté autour de l'embout 1 dans une rainure circulaire 60 réalisée dans la paroi latérale 61 du corps de liaison 5 pour être apte à coopérer avec le bord 62 de l'orifice Ori quand l'embout est enfiché en totalité dans cet orifice Ori pour réaliser un passage étanche entre la paroi latérale du corps de liaison et le bord de l'orifice.In the embodiment in accordance with Figure 8, the seal 12 is mounted around the nozzle 1 in a circular groove 60 formed in the side wall 61 of the connecting body 5 to be able to cooperate with the edge 62 of the orifice O ri when the nozzle is fully inserted into this orifice O ri to achieve a sealed passage between the side wall of the connecting body and the edge of the orifice.

    Claims (11)

    Gicleur de refroidissement d'un point chaud d'un piston de moteur de véhicule automobile ou analogue comportant, dans le bloc moteur (Bm), un circuit haute pression d'un fluide de lubrification, ledit gicleur comportant un embout de connexion (1) comprenant une percée traversante (2) avec une entrée (3) et une sortie (4), un corps de liaison (5) définissant un conduit fluidique (6) dont une première extrémité (7) est reliée de façon fluidique étanche à la sortie (4) de la percée traversante, et une buse d'éjection (8) comportant une entrée d'alimentation (9) reliée de façon fluidique étanche à la seconde extrémité (10) du conduit fluidique (6),
    ledit gicleur étant caractérisé par le fait qu'il comporte en outre : des moyens de blocage en translation (11) de l'embout (1) quand il est enfiché dans un orifice (Ori) réalisé dans le bloc moteur (Bm), ledit orifice communiquant avec le circuit haute pression, et un joint d'étanchéité (12) monté autour de l'embout (1) apte à coopérer avec la paroi latérale du bloc moteur (Bm) quand ledit embout est enfiché dans l'orifice (Ori), pour réaliser un passage étanche entre la paroi latérale extérieure (13) de l'embout et la paroi intérieure de l'orifice (Ori).     Cooling nozzle of a hot point of a motor vehicle engine piston or the like comprising, in the engine block (B m ), a high-pressure circuit of a lubricating fluid, said nozzle comprising a connecting piece (1 ) comprising a through-hole (2) with an inlet (3) and an outlet (4), a connecting body (5) defining a fluidic conduit (6), a first end (7) of which is fluidically sealed to the outlet (4) of the throughthrough, and an ejection nozzle (8) having a supply inlet (9) fluidly sealed to the second end (10) of the fluid conduit (6),
    said nozzle being characterized in that it further comprises: locking means in translation (11) of the nozzle (1) when it is plugged into an orifice (O ri ) made in the engine block (B m ), said orifice communicating with the high pressure circuit, and a seal (12) mounted around the tip (1) adapted to cooperate with the side wall of the engine block (B m ) when said tip is plugged into the orifice (O ri ), to achieve a sealed passage between the outer side wall (13) of the nozzle and the inner wall of the orifice (O ri ).     Gicleur selon la revendication 1, caractérisé par le fait que les moyens de blocage en translation (11) de l'embout (1) dans l'orifice (Ori) sont constitués par au moins l'un des moyens suivants : une bague élastique fendue (20) montée autour de l'embout en l'enserrant, le diamètre extérieur de ladite bague étant légèrement supérieur à celui de l'orifice (Ori) de façon que l'embout portant ladite bague soit apte à être enfiché en force dans l'orifice (Ori) pour y être coincé, au moins un jonc élastique coupé (18) disposé dans une saignée circulaire (19) réalisée dans la paroi latérale extérieure (13) de l'embout (1), le diamètre extérieur du dit jonc étant supérieur au diamètre de l'orifice (Ori). au moins une patte élastique (21) dont une première extrémité (22) est solidaire de la paroi latérale extérieure (13) de l'embout (1) et dont la seconde extrémité libre (23) tournée vers la partie (24) de l'embout comportant la sortie (4) de la percée (2) est en dehors du volume cylindrique défini par la paroi latérale extérieure (13) de l'embout, un clip élastique en forme de disque concave (25) comportant une ouverture centrale (26) d'un diamètre inférieur à celui de la paroi latérale extérieure (13) de l'embout, le diamètre extérieur (27) du disque (25) étant supérieur au diamètre de l'orifice (Ori), le disque (25) étant ancré dans la paroi latérale extérieure (13) de l'embout (1) de façon que sa concavité (28) soit tournée vers la partie (24) de l'embout comportant la sortie (4) de la percée traversante (2). Nozzle according to Claim 1, characterized in that the translation locking means (11) of the nozzle (1) in the orifice (O ri ) consist of at least one of the following means: a slotted elastic ring (20) mounted around the endpiece by enclosing it, the outside diameter of said ring being slightly greater than that of the orifice (O ri ) so that the end piece bearing said ring is suitable for being plugged into force in the orifice (O ri ) to be stuck there, at least one cut elastic ring (18) arranged in a circular groove (19) formed in the outer lateral wall (13) of the nozzle (1), the outer diameter of said rod being greater than the diameter of the orifice (O ri ). at least one elastic lug (21) whose first end (22) is integral with the outer side wall (13) of the end piece (1) and whose second free end (23) faces towards the portion (24) of the nozzle having the outlet (4) of the piercing (2) is outside the cylindrical volume defined by the outer lateral wall (13) of the mouthpiece, a resilient concave disc-shaped clip (25) having a central opening (26) of a diameter smaller than that of the outer side wall (13) of the mouthpiece, the outer diameter (27) of the disc (25) being greater than the diameter of the orifice (O ri ), the disk (25) being anchored in the outer lateral wall (13) of the nozzle (1) so that its concavity (28) is turned towards the portion (24) the nozzle having the outlet (4) of the through-hole (2). Gicleur selon l'une des revendications 1 et 2, caractérisé par le fait que le corps de liaison (5) est constitué : d'une goulotte (30) définissant une gorge (31) débouchant à ses deux extrémités opposées (32, 33) et ouverte latéralement, d'un couvercle (34) recouvrant la goulotte (30) pour fermer de façon étanche l'ouverture latérale de la gorge (31) et ainsi réaliser le conduit fluidique étanche (6) dont les deux extrémités (7, 10) sont constituées par les deux extrémités opposées (32, 33) de la gorge (31), et de moyens pour solidariser le couvercle (34) avec la goulotte (30). Nozzle according to one of claims 1 and 2, characterized in that the connecting body (5) consists of: a chute (30) defining a groove (31) opening at its two opposite ends (32, 33) and open laterally, a cover (34) covering the trough (30) for sealingly closing the lateral opening of the groove (31) and thus forming the sealed fluidic conduit (6), the two ends (7, 10) of which consist of the two opposite ends (32, 33) of the groove (31), and means for securing the cover (34) with the chute (30). Gicleur selon la revendication 3, caractérisé par le fait que, la goulotte et le couvercle étant tout les deux en un matériau plastique, les moyens pour solidariser le couvercle (34) avec la goulotte (30) sont constitués par une soudure par ultra son.Nozzle according to claim 3, characterized in that , the chute and the cover being both of a plastic material, the means for securing the cover (34) with the chute (30) are constituted by an ultrasonic weld. Gicleur selon l'une des revendications 3 et 4, caractérisé par le fait que l'embout (1), la goulotte (30) et la buse (8) sont réalisés en une seule pièce.Nozzle according to one of claims 3 and 4, characterized in that the nozzle (1), the chute (30) and the nozzle (8) are made in one piece. Gicleur selon la revendication 5, caractérisé par le fait que ladite pièce est obtenue par moulage.Nozzle according to claim 5, characterized in that said part is obtained by molding. Gicleur selon l'une des revendications 1 à 6, caractérisé par le fait qu'il comporte des moyens de clapet (40) montés en coopération avec la sortie (4) de la percée traversante (2) et la première extrémité (7) du conduit fluidique (6), ces moyens de clapet étant agencés pour autoriser un passage fluidique de ladite sortie (4) vers ladite première extrémité (7).Nozzle according to one of claims 1 to 6, characterized in that it comprises valve means (40) mounted in cooperation with the outlet (4) of the through-hole (2) and the first end (7) of the fluidic duct (6), these valve means being arranged to allow a fluid passage of said outlet (4) to said first end (7). Gicleur selon l'une des revendications 3 à 6, caractérisé par le fait que la goulotte (30) et l'embout (1) sont situés d'un même côté du plan (41) du couvercle (34), l'axe (42) de la percée traversante (2) et l'axe (43) du conduit fluidique (6) faisant entre eux sensiblement un angle droit.Nozzle according to one of claims 3 to 6, characterized in that the chute (30) and the nozzle (1) are located on the same side of the plane (41) of the cover (34), the axis ( 42) of the through-hole (2) and the axis (43) of the fluidic conduit (6) forming a substantially right angle between them. Gicleur selon les revendications 3 et 7, caractérisé par le fait que les moyens de clapet (40) sont constitués d'une bille de clapet (44) apte à coopérer avec un siège de clapet (45) réalisé à la sortie (4) de la percée traversante (2), le diamètre de la bille de clapet étant supérieur au diamètre du siège de clapet, et d'un ressort linéaire (46) dont une extrémité (47) est en appui sur la bille de clapet (44) et l'autre extrémité (48) traverse la gorge (31) et vient en appui sur la face (49) du couvercle (34) tournée vers ladite gorge.Nozzle according to claims 3 and 7, characterized in that the valve means (40) consist of a valve ball (44) adapted to cooperate with a valve seat (45) made at the outlet (4) of the through-bore (2), the diameter of the valve ball being greater than the diameter of the valve seat, and a linear spring (46), one end (47) of which bears against the valve ball (44) and the other end (48) passes through the groove (31) and bears on the face (49) of the cover (34) facing said groove. Gicleur selon l'une des revendications 1 à 9, caractérisé par le fait que le joint d'étanchéité (12) est monté autour de l'embout (1) dans une rainure circulaire (50) réalisée dans la paroi latérale extérieure (13) de l'embout pour être apte à coopérer avec la paroi latérale de l'orifice (Ori) quand l'embout est enfiché dans l'orifice (Ori) pour réaliser un passage étanche entre la paroi latérale extérieure de l'embout et la paroi intérieure de l'orifice (Ori), le diamètre extérieur du dit joint d'étanchéité (12) étant supérieur au diamètre de l'orifice (Ori) quand ce joint n'est soumis à aucune compression.Nozzle according to one of claims 1 to 9, characterized in that the seal (12) is mounted around the nozzle (1) in a circular groove (50) formed in the outer side wall (13) the tip to be able to cooperate with the side wall of the orifice (O ri ) when the tip is plugged into the orifice (O ri ) to provide a sealed passage between the outer side wall of the nozzle and the inner wall of the orifice (O ri ), the outer diameter of said seal (12) being greater than the diameter of the orifice (O ri ) when this seal is not subjected to any compression. Gicleur selon l'une des revendications 1 à 9, caractérisé par le fait que le joint d'étanchéité (12) est monté autour de l'embout (1) dans une rainure circulaire (60) réalisée dans la paroi latérale (61) du corps de liaison (5) pour être apte à coopérer avec le bord (62) de l'orifice (Ori) quand l'embout est enfiché en totalité dans cet orifice (Ori) pour réaliser un passage étanche entre la paroi latérale du corps de liaison et le bord de l'orifice.Nozzle according to one of claims 1 to 9, characterized in that the seal (12) is mounted around the nozzle (1) in a circular groove (60) formed in the lateral wall (61) of the connecting body (5) to be able to cooperate with the edge (62) of the orifice (O ri ) when the endpiece is fully inserted into this orifice (O ri ) to provide a sealed passage between the side wall of the connecting body and the edge of the orifice.
    EP05290843A 2004-04-29 2005-04-18 Cooling nozzle for a hot spot of a piston of an internal combustion engine for a motor car Expired - Lifetime EP1591640B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR0404608A FR2869641B1 (en) 2004-04-29 2004-04-29 COOLING GAS COOLER OF A HOT POINT OF A MOTOR VEHICLE PISTON OR THE LIKE
    FR0404608 2004-04-29

    Publications (2)

    Publication Number Publication Date
    EP1591640A1 true EP1591640A1 (en) 2005-11-02
    EP1591640B1 EP1591640B1 (en) 2009-04-15

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    Application Number Title Priority Date Filing Date
    EP05290843A Expired - Lifetime EP1591640B1 (en) 2004-04-29 2005-04-18 Cooling nozzle for a hot spot of a piston of an internal combustion engine for a motor car

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    EP (1) EP1591640B1 (en)
    AT (1) ATE428848T1 (en)
    DE (1) DE602005013845D1 (en)
    FR (1) FR2869641B1 (en)

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    Publication number Priority date Publication date Assignee Title
    EP3415736A1 (en) * 2017-06-16 2018-12-19 Illinois Tool Works, Inc. Piston cooling jet assembly
    US11506110B2 (en) 2020-05-18 2022-11-22 Schaeffler Technologies AG & Co. KG Oil-spray tube with poppet valve

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102011077506B4 (en) * 2011-06-14 2024-10-31 Bayerische Motoren Werke Aktiengesellschaft screw connection for an oil spray nozzle

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    US3709109A (en) * 1969-11-07 1973-01-09 Kloeckner Humboldt Deutz Ag Piston cooling arrangement for a reciprocating piston internal combustion engine with an injection nozzle
    US3910550A (en) * 1974-05-13 1975-10-07 Illinois Tool Works Drain plug assembly
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    JPH0968042A (en) * 1995-08-31 1997-03-11 Suzuki Motor Corp Oil injection device for four-cycle engine
    EP0785344A1 (en) * 1996-01-18 1997-07-23 Bontaz Centre Push-in oil cooling nozzle

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    Publication number Priority date Publication date Assignee Title
    US3709109A (en) * 1969-11-07 1973-01-09 Kloeckner Humboldt Deutz Ag Piston cooling arrangement for a reciprocating piston internal combustion engine with an injection nozzle
    US3910550A (en) * 1974-05-13 1975-10-07 Illinois Tool Works Drain plug assembly
    US5267534A (en) * 1991-09-09 1993-12-07 Caterpillar Inc. Piston cooling nozzle
    JPH0968042A (en) * 1995-08-31 1997-03-11 Suzuki Motor Corp Oil injection device for four-cycle engine
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    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP3415736A1 (en) * 2017-06-16 2018-12-19 Illinois Tool Works, Inc. Piston cooling jet assembly
    US11506110B2 (en) 2020-05-18 2022-11-22 Schaeffler Technologies AG & Co. KG Oil-spray tube with poppet valve

    Also Published As

    Publication number Publication date
    EP1591640B1 (en) 2009-04-15
    FR2869641B1 (en) 2006-07-14
    ATE428848T1 (en) 2009-05-15
    FR2869641A1 (en) 2005-11-04
    DE602005013845D1 (en) 2009-05-28

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