EP1591640B1 - 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
EP1591640B1
EP1591640B1 EP05290843A EP05290843A EP1591640B1 EP 1591640 B1 EP1591640 B1 EP 1591640B1 EP 05290843 A EP05290843 A EP 05290843A EP 05290843 A EP05290843 A EP 05290843A EP 1591640 B1 EP1591640 B1 EP 1591640B1
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EP
European Patent Office
Prior art keywords
endpiece
orifice
diameter
nozzle assembly
fact
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Not-in-force
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EP05290843A
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German (de)
French (fr)
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EP1591640A1 (en
Inventor
Bertrand Paris
Alain De Pretto
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Ardepa
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Ardepa
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    • 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 the cooling nozzles of a motor vehicle piston hot point or the like which comprise, in the engine block, a high pressure circuit of a lubricating fluid, such as oil or the like.
  • nozzles are essentially designed to be connected bypass on 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 pressurized fluid is then ejected at the nozzle outlet while being sprayed and directed towards the hot point of the piston to cool it.
  • the sprayed fluid is then recovered by flowing in the cover of this lubricating fluid, this tarpaulin serving in particular reserve and power source for the high pressure circuit.
  • the present invention is intended to provide a cooling nozzle, in particular a hot point of a motor vehicle engine piston or the like comprising, in the engine block a high pressure circuit of a fluid.
  • lubricating which at least partially overcomes the aforementioned drawbacks of the nozzles of the prior art, having a relatively low manufacturing cost, because easier to manufacture especially in large series, while giving total satisfaction on the plan of reliability.
  • the present invention relates to a cooling nozzle of a hot point of a motor vehicle engine piston comprising, in the engine block, a high pressure circuit of a fluid of lubrication, defined in accordance with the appended claim 1, the preamble of which is based on the characteristics disclosed by the JP 090 68 042 A mentioned above.
  • 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 the Figures 1 to 5 a connection piece 1 comprising a through-hole 2 with an inlet 3 and an outlet 4, a connecting body 5 defining a fluid duct 6, a first end 7 of which is fluidly sealed to the outlet 4 of the through-hole, and an ejection nozzle 8 having a supply 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 passage sealing 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 tip 1 comprise a split elastic ring 20, the slot being visible on the figure 2 and referenced 17.
  • This ring is mounted around the tip by enclosing it, the outer diameter of the ring being slightly greater than that of the orifice O ri so that the end bearing the ring is adapted to be plugged in. It is a force in the orifice O ri , the ring closing on itself while entering the orifice to be wedged by the elastic reaction which tends to open it.
  • these locking means 11 of the nozzle 1 is illustrated on the figure 6 , in which they comprise at least one cut resilient ring 18 disposed in a circular groove 19 formed in the outer side wall 13 of the nozzle 1, the outer diameter of the rod being greater than the diameter of the orifice O ri .
  • the locking means 11 of the nozzle 1 comprise at least one elastic lug 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 lateral wall 13 of the nozzle 1 and the second free end 23 facing the portion 24 of the nozzle having the outlet 4 of the through-hole 2 is outside the cylindrical volume defined by the outer lateral wall 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 illustrated on the figure 7 the free ends 23 of the resilient tabs 21 abut against the lower edge 29 of the groove Go, preventing the tip 1 out of the orifice O ri .
  • a fourth embodiment of the locking means 11 of the tip is illustrated on the figure 8 in which they have a resilient clip in the form of concave disc 25 having a central opening 26 of a diameter smaller than that of the outer side 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 trough 30, or equivalent, defining a groove 31 opening at its two opposite ends 32, 33 and open laterally, a cover 34 covering the chute 30 for sealing the lateral opening of the groove 31 and thus producing the sealed fluidic conduit 6 defined above, the two ends 7, 10 of which consist of 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 lid 34 with the chute 30 consist of a weld including ultra son.
  • the tip 1, the chute 30 and the nozzle 8 are made in one piece, for example, in a manner known per se, by molding.
  • the cooling nozzle comprises valve means 40 mounted in cooperation with the outlet 4 of the through-hole 2 and the first end 7 of the fluid duct 6, these valve means being arranged to allow a fluid passage of this outlet 4 to this first end 7.
  • the nozzle is formed so that the chute 30 and the nozzle 1 are located on the same side of the plane 41 of the lid 34, the axis 42 of the through-hole 2 and the axis 43 of the duct fluidic 6 forming between them substantially a right angle.
  • 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 of which bears on 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.
  • 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 nozzle 1 in a circular groove 50 formed in the outer side wall 13 of the nozzle to be adapted 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 joint is not subject to any compression.
  • the seal 12 is mounted around the end piece 1 in a circular groove 60 made 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 endpiece is plugged entirely 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 the cooling nozzles of a motor vehicle piston hot point or the like which comprise, in the engine block, a high pressure circuit of a lubricating fluid, 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.It is known that, in certain motor vehicle combustion engines, the pistons, especially in their upper part, are subjected to very high temperatures which can adversely affect their service life. Also, have been developed cooling nozzles of 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 nozzles are essentially designed to be connected bypass on 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 pressurized fluid is then ejected at the nozzle outlet while being sprayed and directed towards the hot point of the piston to cool it. The sprayed fluid is then recovered by flowing in the cover of this lubricating fluid, this tarpaulin serving in particular reserve and power source for the high pressure circuit.

Les gicleurs qui ont été réalisés jusqu'à ce jour, comme celui décrit dans le JP 09 068 042 A , ont une structure et un montage relativement complexes qui les rendent 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, like the one described in the JP 09 068 042 A , have a relatively complex structure and assembly that make them a relatively high cost, which is a big drawback given the large quantities of this type of sprinkler that it is necessary to produce, would be only 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.Thus, the present invention is intended to provide a cooling nozzle, in particular a hot point of a motor vehicle engine piston or the like comprising, in the engine block a high pressure circuit of a fluid. lubricating, which at least partially overcomes the aforementioned drawbacks of the nozzles of the prior art, having a relatively low manufacturing cost, because easier to manufacture especially in large series, while giving total satisfaction on the plan 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, défini selon la revendication 1 annexée, dont le préambule est basé sur les caractéristiques divulguées par le JP 090 68 042 A mentionné ci-dessus.More specifically, the present invention relates to a cooling nozzle of a hot point of a motor vehicle engine piston comprising, in the engine block, a high pressure circuit of a fluid of lubrication, defined in accordance with the appended claim 1, the preamble of which is based on the characteristics disclosed by the JP 090 68 042 A mentioned above.

D'autres caractéristiques et avantages de l'invention apparaîtront 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 characteristics and advantages of the invention will appear in the course of the following description given with reference to the accompanying drawings for illustrative but not limiting purposes, in which:
  • The figure 1 represents, seen from above, a first embodiment of the nozzle according to the invention, for cooling a low hot spot of a motor vehicle engine piston,
  • The Figures 2 to 5 represent four cross-sectional views of the cooling nozzle according to the invention in the embodiment shown in FIG. figure 1 , the figure 2 being a longitudinal sectional view referenced AA on the figure 1 , the other three Figures 3 to 5 being three cross-sectional views respectively referenced CC, DD and BB on this figure 1 , and
  • The Figures 6 to 8 represent 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 whatever the form of representation of these elements. Similarly, if elements are not specifically referenced in one of the figures, their references can be easily found by referring to another figure.

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 the Figures 1 to 5 a connection piece 1 comprising a through-hole 2 with an inlet 3 and an outlet 4, a connecting body 5 defining a fluid duct 6, a first end 7 of which is fluidly sealed to the outlet 4 of the through-hole, and an ejection nozzle 8 having a supply 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 passage sealing 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 on the Figures 1 to 5 these locking means 11 of the tip 1 comprise a split elastic ring 20, the slot being visible on the figure 2 and referenced 17. This ring is mounted around the tip by enclosing it, the outer diameter of the ring being slightly greater than that of the orifice O ri so that the end bearing the ring is adapted to be plugged in. It is a force in the orifice O ri , the ring closing on itself while entering the orifice to be wedged by the elastic reaction which 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 on the figure 6 , in which they comprise at least one cut resilient ring 18 disposed in a circular groove 19 formed in the outer side wall 13 of the nozzle 1, the outer 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 on the figure 7 , the locking means 11 of the nozzle 1 comprise at least one elastic lug 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 lateral wall 13 of the nozzle 1 and the second free end 23 facing the portion 24 of the nozzle having the outlet 4 of the through-hole 2 is outside the cylindrical volume defined by the outer lateral wall 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 illustrated on the figure 7 the free ends 23 of the resilient 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 tip is illustrated on the figure 8 in which they have a resilient clip in the form of concave disc 25 having a central opening 26 of a diameter smaller than that of the outer side 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.Returning specifically to Figures 1 to 5 , according to another characteristic of the invention, the connecting body 5 consists of a trough 30, or equivalent, defining a groove 31 opening at its two opposite ends 32, 33 and open laterally, a cover 34 covering the chute 30 for sealing the lateral opening of the groove 31 and thus producing the sealed fluidic conduit 6 defined above, the two ends 7, 10 of which consist of 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 made of a plastic material, the means for securing the lid 34 with the chute 30 consist of 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 type of nozzle, the tip 1, the chute 30 and the nozzle 8 are made in one 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 on Figures 2 and 4 , and partially on Figures 6 to 8 , the cooling nozzle comprises valve means 40 mounted in cooperation with the outlet 4 of the through-hole 2 and the first end 7 of the fluid duct 6, these valve means being arranged to allow a fluid passage of this outlet 4 to 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 formed so that the chute 30 and the nozzle 1 are located on the same side of the plane 41 of the lid 34, the axis 42 of the through-hole 2 and the axis 43 of the duct fluidic 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 on Figures 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 of which bears on 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.

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 according to the Figures 1 to 7 , the seal 12 is mounted around the nozzle 1 in a circular groove 50 formed in the outer side wall 13 of the nozzle to be adapted 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 joint is not subject 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 according to the figure 8 , the seal 12 is mounted around the end piece 1 in a circular groove 60 made 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 endpiece is plugged entirely 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 (10)

  1. A nozzle assembly for cooling a hot point of a piston of a motor vehicle engine or the like, including, in the cylinder block (Bm), a high pressure circuit for a lubricating fluid, said nozzle comprising a connection endpiece (1) having a through opening (2) with an inlet (3) and an outlet (4), a connection body (5) defining a fluid flow duct (6) having a first end (7) connected in sealed fluid-flow manner to the outlet (4) of the through opening, and an injection nozzle (8) having a feed inlet (9) connected in sealed fluid-flow manner to the second end (10) of the fluid flow duct (6),
    means (11) for blocking movement in translation of the endpiece (1) when engaged in an orifice (Ori) formed in the cylinder block (Bm), said orifice communicating with the high pressure circuit; and
    a sealing gasket (12) mounted around the endpiece (1) and suitable for co-operating with the side wall of the cylinder block (Bm) when said endpiece is engaged in the orifice (Ori) to provide a sealed passage between the outside wall (13) of the endpiece and the inside wall of the orifice (Ori),
    the nozzle assembly being characterized by the fact that the means (11) for blocking movement in translation of the endpiece (1) in the orifice (Ori) are constituted by at least one of the following means:
    · a resilient split sleeve (20) mounted around the endpiece and clamped onto it, the outside diameter of said ring being slightly greater than the diameter of the orifice (Ori) so that the endpiece carrying said ring is suitable for being engaged by force in the orifice (Ori) in order to be jammed therein;
    · at least one resilient cut ring (18) placed in a circular notch(19) formed in the outside wall (13) of the endpiece (1), the outside diameter of said ring being greater than the diameter of the orifice (Ori);
    · at least one resilient tab (21) having a first end (22) secured to the outside wall (13) of the endpiece (1) and having a free second end (23) turned towards the portion (24) of the endpiece including the outlet (4) of the opening (2) and lying outside the cylindrical volume defined by the outside wall (13) of the endpiece; and
    · a resilient clip in the form of a concave disk (25) having a central opening (26) of diameter less than the diameter of the outside wall (13) of the endpiece, the outside diameter (27) of the disk (25) being greater than the diameter of the orifice (Ori), the disk (25) being anchored in the outside wall (13) of the endpiece (1) in such a manner that its concave side (28) faces towards the portion (24) of the endpiece that includes the outlet (4) of the through opening (2).
  2. A nozzle assembly according to claim 1, characterized by the fact that the connection body (5) is constituted:
    · by a neck (30) defining a groove (31) opening out at its two opposite ends (32, 33) and open sideways;
    · a cover (34) covering the neck (30) to close the side opening of the neck (31) in sealed manner and thereby form the sealed fluid-flow duct (6) having its two ends (7, 10) constituted by the two opposite ends (32, 33) of the groove (31); and
    · means for securing the cover (34) to the neck (30).
  3. A nozzle assembly according to claim 2, characterized by the fact that the neck and the cover are both made of a plastics material, the means for securing the cover (34) to the neck (30) being constituted by ultrasound welding.
  4. A nozzle assembly according to claim 2 or claim 3, characterized by the fact that the endpiece (1), the neck (30), and the nozzle (8) are made as a single piece.
  5. A nozzle assembly according to claim 4, characterized by the fact that said piece is obtained by molding.
  6. A nozzle assembly according to any one of claims 1 to 5, characterized by the fact that it includes valve means (40) mounted to co-operate with the outlet (4) of the through opening (2) and the first end (7) of the fluid flow duct (6), the valve means being arranged to allow fluid to flow from said outlet (4) towards said first end (7).
  7. A nozzle assembly according to any one of claims 2 to 5, characterized by the fact that the neck (30) and the endpiece (1) are situated on one side of the plane (41) of the cover (34), the axis (42) of the through opening (2) and the axis (43) of the fluid flow duct (6) being substantially at right angles to each other.
  8. A nozzle assembly according to claims 2 and 6, characterized by the fact that the valve means (40) are constituted by a valve ball (44) suitable for co-operating with a valve seat (45) formed at the outlet (4) of the through opening (2), the diameter of the valve ball being greater than the diameter of the valve seat, and a linear spring (46) having one end (47) bearing against the valve ball (44) and its other end (48) passing through the groove (31) and bearing against the face (49) of the cover (34) that faces towards said groove.
  9. A nozzle assembly according to any one of claims 1 to 8, characterized by the fact that the sealing gasket (12) is mounted around the endpiece (1) in a circular slot(50) formed in the outside wall (13) of the endpiece to be suitable for co-operating with the side wall of the orifice (Ori) when the endpiece is engaged in the orifice (Ori) in order to provide a sealed passage between the outside wall of the endpiece and the inside wall of the orifice (Ori), the outside diameter of said sealing gasket (12) being greater than the diameter of the orifice (Ori) when the gasket is not subjected to any compression.
  10. A nozzle assembly according to any one of claims 1 to 8, characterized by the fact that the sealing gasket (12) is mounted around the endpiece (1) in a circular slot(60) made in the side wall (61) of the connection body (5) so as to be suitable for co-operating with the edge (62) of the orifice (Ori) when the endpiece is fully engaged in said orifice (Ori) in order to provide a sealed passage between the side wall of the connection 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 Not-in-force EP1591640B1 (en)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=34942144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05290843A Not-in-force 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

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011077506A1 (en) * 2011-06-14 2012-12-20 Bayerische Motoren Werke Aktiengesellschaft Screw of oil spray nozzle for piston of internal combustion engine, has screw-in portion that is arranged extending upto the bore until external thread and inner thread engages together
WO2021236360A1 (en) * 2020-05-18 2021-11-25 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
US10704450B2 (en) * 2017-06-16 2020-07-07 Illinois Tool Works Inc. Piston cooling jet assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1956121A1 (en) * 1969-11-07 1971-05-27 Kloeckner Humboldt Deutz Ag Piston cooling for reciprocating internal combustion engines with spray nozzles that can be switched off
US3910550A (en) * 1974-05-13 1975-10-07 Illinois Tool Works Drain plug assembly
CA2090330A1 (en) * 1991-09-09 1993-03-10 Willibald G. Berlinger Piston cooling nozzle
JPH0968042A (en) * 1995-08-31 1997-03-11 Suzuki Motor Corp Oil injection device for four-cycle engine
FR2743847B1 (en) * 1996-01-18 1998-02-27 Bontaz Centre SOCKET COOLING JET

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011077506A1 (en) * 2011-06-14 2012-12-20 Bayerische Motoren Werke Aktiengesellschaft Screw of oil spray nozzle for piston of internal combustion engine, has screw-in portion that is arranged extending upto the bore until external thread and inner thread engages together
WO2021236360A1 (en) * 2020-05-18 2021-11-25 Schaeffler Technologies AG & Co. KG Oil-spray tube with poppet valve

Also Published As

Publication number Publication date
FR2869641B1 (en) 2006-07-14
FR2869641A1 (en) 2005-11-04
EP1591640A1 (en) 2005-11-02
ATE428848T1 (en) 2009-05-15
DE602005013845D1 (en) 2009-05-28

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