FR2905976A3 - Timing chain lubricating device for internal combustion engine, has pump with input and output connected to oil tank and nozzle, respectively, and cylinder case with wall containing nozzle and joined with cover of case housing pump - Google Patents

Timing chain lubricating device for internal combustion engine, has pump with input and output connected to oil tank and nozzle, respectively, and cylinder case with wall containing nozzle and joined with cover of case housing pump Download PDF

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Publication number
FR2905976A3
FR2905976A3 FR0608201A FR0608201A FR2905976A3 FR 2905976 A3 FR2905976 A3 FR 2905976A3 FR 0608201 A FR0608201 A FR 0608201A FR 0608201 A FR0608201 A FR 0608201A FR 2905976 A3 FR2905976 A3 FR 2905976A3
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France
Prior art keywords
nozzle
pump
housing
case
input
Prior art date
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Withdrawn
Application number
FR0608201A
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French (fr)
Inventor
Acacio Martins
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Renault SAS
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Renault SAS
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Publication date
Application filed by Renault SAS filed Critical Renault SAS
Priority to FR0608201A priority Critical patent/FR2905976A3/en
Publication of FR2905976A3 publication Critical patent/FR2905976A3/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/08Lubricating systems characterised by the provision therein of lubricant jetting means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02Arrangements of lubricant conduits

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The device has a pump (9) housed in a case (8), and a nozzle (5) placed in an internal wall (6) of a cylinder case (4). The pump comprises an input and an output connected to an oil tank (12) and the nozzle, respectively, so as to spray the oil toward a driving pinion (1), driven pinion (2) and a timing chain (3). The wall of the case (4) containing the nozzle is joined with a cover (15) of the case (8) housing the pump. An individual filter (14) is placed in upstream of the nozzle. The nozzle and the case (8) are made of same material.

Description

1 La présente invention concerne un dispositif de lubrificationThe present invention relates to a lubrication device

avantageusement applicable au graissage d'une chaîne de distribution d'un moteur à combustion interne.  advantageously applicable to the lubrication of a distribution chain of an internal combustion engine.

Dans le domaine de la lubrification il est connu d'utiliser un dispositif de pompage envoyant de l'huile sur un organe à lubrifier contenu dans un carter, au moyen de canalisations disposées pour aboutir, au travers dudit carter, à au moins un gicleur dirigé vers ledit organe. Ceci nécessite la réalisation desdites canalisations, généralement par usinage dans ledit carter, la réalisation de gicleurs classiquement réalisés par décolletage, ainsi que leur montage typiquement par frettage dans un alésage dudit carter.  In the field of lubrication, it is known to use a pumping device sending oil to a member to be lubricated contained in a housing, by means of pipes arranged to terminate, through said housing, at least one directed nozzle. towards said organ. This requires the realization of said pipes, generally by machining in said housing, the realization of nozzles conventionally made by bar turning, and their mounting typically by shrinking in a bore of said housing.

La figure 1 présente un dispositif de lubrification pour chaîne de distribution d'un moteur à combustion interne selon l'art antérieur. La distribution d'un tel moteur comprend classiquement un pignon menant 1 disposé en extrémité du vilebrequin, entraînant au moins une chaîne de distribution 3 qui transmet le mouvement de rotation à un arbre à cames via un pignon mené 2. La lubrification de la chaîne de distribution 3 est assuré par projection d'huile au moyen d'au moins un gicleur 5. Ce gicleur 5 est classiquement disposé sur l'une des parois internes d'un premier carter 4. Ledit premier carter 4 est ici représenté partiellement afin de montrer les composants de la distribution 1, 2, 3. Le premier carter 4 est refermé étanche autour de la distribution 1, 2, 3, afin notamment de récupérer l'huile projetée pour la rediriger vers un réservoir 12. La figure 2 illustre un schéma hydraulique correspondant au dispositif de l'art antérieur de la figure 1. On retrouve la distribution 1, 2, 3 logée dans le premier carter 4. L'huile présente dans un réservoir 12 est aspirée au travers d'un filtre d'entrée 10 par une pompe 9, logée dans un second carter 8, et refoulée, au 2905976 2 travers d'un filtre de sortie 11 vers un circuit d'alimentation principal 13 sous pression. Ce circuit peut comporter d'autres composants accessoires tel un refroidisseur (non représenté). Une dérivation de ce 5 circuit 13 alimente le ou les gicleurs 5. Ces gicleurs 5 sont disposés dans une paroi 6 du premier carter 4 de manière à ce que l'huile qu'ils projettent soit dirigée vers les composants de la distribution 1, 2, 3. Une telle solution est coûteuse, en ce qu'elle 10 comporte plusieurs pièces devant être réalisées, assemblées au cours de plusieurs étapes de fabrication, nécessitant chacune des outillages spécifiques, et devant être gérées et référencées tout au long de leur cycle de vie.  FIG. 1 shows a lubrication device for a distribution chain of an internal combustion engine according to the prior art. The distribution of such a motor conventionally comprises a drive gear 1 disposed at the end of the crankshaft, driving at least one timing chain 3 which transmits the rotational movement to a camshaft via a driven pinion 2. The lubrication of the drive chain 3 distribution is provided by spraying oil by means of at least one nozzle 5. This nozzle 5 is conventionally arranged on one of the inner walls of a first housing 4. Said first housing 4 is here shown partially to show the components of the distribution 1, 2, 3. The first casing 4 is sealed around the distribution 1, 2, 3, in particular to recover the projected oil to redirect it to a reservoir 12. Figure 2 illustrates a diagram corresponding to the device of the prior art of Figure 1. We find the distribution 1, 2, 3 housed in the first housing 4. The oil in a reservoir 12 is sucked through a filter of entrn 10 by a pump 9, housed in a second housing 8, and discharged, through 2905976 2 through an output filter 11 to a main supply circuit 13 under pressure. This circuit may comprise other accessory components such as a cooler (not shown). A bypass of this circuit 13 feeds the nozzle (s) 5. These nozzles 5 are arranged in a wall 6 of the first casing 4 so that the oil which they project is directed towards the components of the distribution 1, 2 3. Such a solution is expensive, in that it comprises several parts to be produced, assembled during several manufacturing steps, each requiring specific tools, and to be managed and referenced throughout their cycle. life.

15 Le document EP 1188904 décrit un dispositif de lubrification d'une chaîne de distribution de l'art antérieur. La distribution d'huile est avantageusement disposée au niveau des extrémités d'arbre à cames. Cependant ce dispositif présente les mêmes inconvénients 20 de nécessiter de nombreuses pièces et opérations d'assemblage. La présente invention remédie à ces différents inconvénients. L'invention a pour objet un dispositif de 25 lubrification d'un organe disposé dans un premier carter, ledit dispositif comprenant une pompe logée dans un second carter, connectée en entrée à un réservoir d'huile et en sortie à au moins un gicleur disposé dans une paroi du premier carter de telle manière à projeter de l'huile 30 vers ledit organe, ladite paroi du premier carter comportant le gicleur se confondant avec une paroi dudit second carter de pompe. Un tel arrangement présente l'avantage de réduire la canalisation de la pompe au gicleur et de supprimer 35 l'usinage du premier carter. De plus, la pompe étant un composant plus petit que 2905976 3 le premier carter, il est plus facile de disposer les gicleurs sûr le second carter que sur le premier carter. Selon une autre caractéristique de l'invention, le gicleur est réalisé de matière avec ledit second carter.EP 1188904 discloses a lubricating device of a prior art dispensing chain. The oil distribution is advantageously arranged at the camshaft ends. However, this device has the same disadvantages of requiring many parts and assembly operations. The present invention overcomes these various disadvantages. The invention relates to a device for lubricating a member disposed in a first casing, said device comprising a pump housed in a second casing, connected at the inlet to an oil reservoir and at the outlet to at least one nozzle arranged in a wall of the first casing so as to project oil towards said member, said wall of the first casing having the nozzle merging with a wall of said second pump casing. Such an arrangement has the advantage of reducing the pipeline from the pump to the nozzle and eliminating the machining of the first housing. In addition, the pump being a component smaller than the first housing, it is easier to arrange the nozzles on the second housing than on the first housing. According to another characteristic of the invention, the nozzle is made of material with said second housing.

5 Un tel arrangement présente l'avantage de réduire le nombre de pièces, et de supprimer les étapes de réalisation et de montage du gicleur Selon une autre caractéristique de l'invention, un filtre individuel est disposé en amont du gicleur.Such an arrangement has the advantage of reducing the number of parts, and eliminating the steps of making and mounting the nozzle According to another characteristic of the invention, an individual filter is arranged upstream of the nozzle.

10 Selon une autre caractéristique de l'invention, l'organe est une chaîne de distribution. D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement de la description détaillée donnée ci-après à titre indicatif 15 en relation avec des dessins sur lesquels : - la figure 1, décrite dans le préambule, présente un dispositif selon l'art antérieur, - la figure 2, décrite dans le préambule, présente un schéma hydraulique correspondant au dispositif de 20 l'art antérieur de la figure 1, - la figure 3 présente un dispositif de lubrification selon l'invention, - la figure 4 présente un schéma hydraulique selon l'invention correspondant au dispositif de la figure 3, 25 - les figures 5 et 6 présentent un exemple de réalisation d'une paroi de second carter de pompe selon l'invention, respectivement en vue de face et en vue de côté La figure 3 montre une distribution comprenant, 30 comme dans l'art antérieur, un pignon menant 1, entraînant au moins une chaîne de distribution 3 qui transmet le mouvement de rotation à un pignon mené 2. La lubrification de la chaîne de distribution 3 est assurée par projection d'huile au moyen d'au moins un gicleur 5.According to another characteristic of the invention, the organ is a distribution chain. Other characteristics, details and advantages of the invention will emerge more clearly from the detailed description given below for information in connection with drawings in which: FIG. 1, described in the preamble, presents a device according to FIG. FIG. 2, described in the preamble, shows a hydraulic diagram corresponding to the device of the prior art of FIG. 1; FIG. 3 shows a lubrication device according to the invention; FIG. presents a hydraulic diagram according to the invention corresponding to the device of Figure 3, - Figures 5 and 6 show an embodiment of a wall of the second pump casing according to the invention, respectively in front view and in view FIG. 3 shows a distribution comprising, as in the prior art, a driving pinion 1, driving at least one timing chain 3 which transmits the rotational movement to a pinion m ené 2. The lubrication of the timing chain 3 is provided by spraying oil by means of at least one nozzle 5.

35 Selon une caractéristique essentielle de l'invention, ledit gicleur 5 est disposé dans une paroi 15 d'un second 2905976 4 carter 8 qui protège la pompe 9. Ledit second carter 8 est disposé relativement au premier carter 4 de telle manière que la paroi externe 15 du second carter 8 portant le gicleur 5 se confonde avec la paroi interne 6 5 du premier carter 4. Ceci est réalisé en logeant le second carter 8 de la pompe 9 dans le premier carter 4 selon un premier mode de réalisation. Un second mode de réalisation consiste à disposer le second carter 8 de telle manière que ladite surface 15 porteuse du gicleur 5 10 vienne couvrir et obturer une fenêtre pratiquée dans le premier carter 4. La figure 4 montre un schéma hydraulique du dispositif selon l'invention, correspondant à la figure 3. Ce schéma est à rapprocher de celui de la figure 2. On 15 retrouve la distribution 1, 2, 3 logée dans le premier carter 4. L'huile présente dans un réservoir 12 est aspirée au travers d'un filtre d'entrée 10 par une pompe 9, logée dans un second carter 8, et refoulée en sortie vers un circuit principal 13 et vers les gicleurs 5. 20 selon une caractéristique essentielle de l'invention, le ou les gicleurs 5 sont disposés directement dans la paroi 15 du second carter 8 enveloppant la pompe 9, l'huile projetée par les gicleurs 5 étant envoyée vers l'extérieur du second carter 8. Le second carter 8 est 25 rapproché du premier carter 4 et de la distribution 1, 2, 3, et disposé de telle manière à ce que la paroi 15 du second carter 8 vienne remplacer une paroi 6 du premier carter 4 et à ce que les gicleurs 5 projettent l'huile vers les composants de la distribution 1, 2, 3.According to an essential characteristic of the invention, said nozzle 5 is disposed in a wall 15 of a second casing 8 which protects the pump 9. Said second casing 8 is arranged relative to the first casing 4 so that the wall external 15 of the second housing 8 carrying the nozzle 5 is confused with the inner wall 6 5 of the first housing 4. This is achieved by housing the second housing 8 of the pump 9 in the first housing 4 according to a first embodiment. A second embodiment consists in arranging the second casing 8 in such a way that said bearing surface 15 of the nozzle 10 comes to cover and close a window made in the first casing 4. FIG. 4 shows a hydraulic diagram of the device according to the invention corresponding to FIG. 3. This diagram is similar to that of FIG. 2. The distribution 1, 2, 3 housed in the first casing 4 is found. The oil present in a reservoir 12 is sucked through an inlet filter 10 by a pump 9, housed in a second housing 8, and discharged at the outlet to a main circuit 13 and to the nozzles 5. 20 according to an essential characteristic of the invention, the nozzle or nozzles 5 are arranged directly in the wall 15 of the second housing 8 enveloping the pump 9, the oil projected by the nozzles 5 being sent outwardly of the second housing 8. The second housing 8 is close to the first housing 4 and the distribution 1, 2, 3 , and arranged in such a way that the wall 15 of the second casing 8 comes to replace a wall 6 of the first casing 4 and that the nozzles 5 project the oil towards the components of the distribution 1, 2, 3.

30 Selon un mode de réalisation avantageux de l'invention, le ou les gicleurs 5 sont réalisés intégraux avec la paroi 15 du second carter 8. La figure 5 présente une vue de face et la figure 6 une vue de côté d'un exemple de réalisation d'une paroi 15,- ici un couvercle 35 15, de second carter 8 de pompe. Le couvercle 15 est par exemple réalisé par fonderie. Une excroissance est prévue 2905976 5 dans la fonderie qui comporte directement les canalisations internes servant de gicleurs 5. Dans l'exemple illustré, l'excroissance comporte deux trous servant de gicleurs 5. Le ou les trous sont orientés de 5 manière à ce que, une fois le second carter 8 assemblé avec le premier carter 4, l'huile soit projetée vers les composants de la distribution 1, 2, 3, selon la meilleure direction de projection. Une canalisation courte relie directement la pompe 10 9 au couvercle 15, côté interne, en regard de l'excroissance formant le gicleur 5. Afin de faire au plus court cette canalisation est avantageusement dérivée en amont du filtre de sortie 11. Afin de filtrer néanmoins l'huile projetée par le gicleur 5, un filtre 15 individuel 14 est intercalé dans la dérivation entre la pompe 9 et le gicleur 5. Selon un mode de réalisation avantageux, ce filtre 14 est constitué par un tamis disposé dans l'orifice correspondant au gicleur 5 directement dans le couvercle 15, côté interne.According to an advantageous embodiment of the invention, the nozzle or jets 5 are made integral with the wall 15 of the second casing 8. FIG. 5 is a front view and FIG. 6 is a side view of an example of FIG. realization of a wall 15, - here a cover 35 15, second pump housing 8. The lid 15 is for example made by casting. An outgrowth is provided in the foundry which directly comprises the internal pipes serving as jets 5. In the example shown, the outgrowth comprises two holes serving as jets 5. The hole or holes are oriented in such a way that, once the second housing 8 assembled with the first housing 4, the oil is projected to the components of the distribution 1, 2, 3, in the best direction of projection. A short pipe connects the pump 9 directly to the lid 15, on the inner side, opposite the protrusion forming the nozzle 5. In order to make the pipe as short as possible, it is advantageously derived upstream of the outlet filter 11. In order to filter nevertheless the oil projected by the nozzle 5, an individual filter 14 is inserted in the shunt between the pump 9 and the nozzle 5. According to an advantageous embodiment, the filter 14 is constituted by a sieve disposed in the orifice corresponding to the nozzle 5 directly in the lid 15, inner side.

20 L'invention est avantageusement applicable à un dispositif de lubrification d'une chaîne de distribution. Le premier carter 4 étant le carter cylindre 4 protégeant la distribution 1, 2, 3 et le second carter 8 étant le carter de la pompe 9.The invention is advantageously applicable to a lubricating device of a distribution chain. The first housing 4 being the cylinder block 4 protecting the distribution 1, 2, 3 and the second housing 8 being the housing of the pump 9.

Claims (4)

REVENDICATIONS 1. Dispositif de lubrification d'un organe (1, 2, 3) disposé dans un premier carter (4), ledit dispositif comprenant une pompe (9) logée dans un second carter (8), connectée en entrée à un réservoir (12) d'huile et en sortie à au moins un gicleur (5) disposé dans une paroi (6) du premier carter (4) de telle manière à projeter de l'huile vers ledit organe (1, 2, 3), caractérisé en ce que ladite paroi (6) du premier carter (4) comportant le gicleur (5) se confond avec une paroi (15) dudit second carter (8) de la pompe (9).  1. Device for lubricating a member (1, 2, 3) disposed in a first casing (4), said device comprising a pump (9) housed in a second casing (8), connected as input to a reservoir (12). ) and at the outlet to at least one nozzle (5) disposed in a wall (6) of the first housing (4) so as to project oil towards said member (1, 2, 3), characterized in that that said wall (6) of the first casing (4) comprising the nozzle (5) merges with a wall (15) of said second casing (8) of the pump (9). 2. Dispositif selon la revendication 1, où le gicleur (5) est réalisé de matière avec ledit second 15 carter (8).  2. Device according to claim 1, wherein the nozzle (5) is made of material with said second housing (8). 3. Dispositif selon la revendication 1 ou 2, où un filtre individuel (14) est disposé en amont du gicleur (5).  3. Device according to claim 1 or 2, wherein an individual filter (14) is disposed upstream of the nozzle (5). 4. Dispositif selon l'une quelconque des 20 revendications 1 à 3, où l'organe est une chaîne de distribution (1, 2, 3).  4. Device according to any one of claims 1 to 3, wherein the member is a distribution chain (1, 2, 3).
FR0608201A 2006-09-19 2006-09-19 Timing chain lubricating device for internal combustion engine, has pump with input and output connected to oil tank and nozzle, respectively, and cylinder case with wall containing nozzle and joined with cover of case housing pump Withdrawn FR2905976A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0608201A FR2905976A3 (en) 2006-09-19 2006-09-19 Timing chain lubricating device for internal combustion engine, has pump with input and output connected to oil tank and nozzle, respectively, and cylinder case with wall containing nozzle and joined with cover of case housing pump

Applications Claiming Priority (1)

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FR0608201A FR2905976A3 (en) 2006-09-19 2006-09-19 Timing chain lubricating device for internal combustion engine, has pump with input and output connected to oil tank and nozzle, respectively, and cylinder case with wall containing nozzle and joined with cover of case housing pump

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FR2905976A3 true FR2905976A3 (en) 2008-03-21

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FR0608201A Withdrawn FR2905976A3 (en) 2006-09-19 2006-09-19 Timing chain lubricating device for internal combustion engine, has pump with input and output connected to oil tank and nozzle, respectively, and cylinder case with wall containing nozzle and joined with cover of case housing pump

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607601A (en) * 1984-02-23 1986-08-26 Compagnie Des Transmissions Mechaniques Sedis Detachable timing gear cassette unit for an explosion or internal combustion engine
US4974561A (en) * 1988-11-16 1990-12-04 Nissan Motor Co., Ltd. Lubrication device for engine
JPH09273408A (en) * 1996-04-08 1997-10-21 Daihatsu Motor Co Ltd Chain lubricating device for internal combustion engine
DE10021221C1 (en) * 2000-04-29 2001-05-23 Porsche Ag Timing gear cover for an IC motor has two sets of holding eyes and stiffening ribs in a grid structure to reduce timing gear noise emissions
EP1482132A1 (en) * 2003-05-26 2004-12-01 HONDA MOTOR CO., Ltd. Vertical engine
EP1522682A1 (en) * 2003-10-09 2005-04-13 Ford Global Technologies, LLC A camshaft drive assembly and a case and a chain guide for a camshaft drive assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607601A (en) * 1984-02-23 1986-08-26 Compagnie Des Transmissions Mechaniques Sedis Detachable timing gear cassette unit for an explosion or internal combustion engine
US4974561A (en) * 1988-11-16 1990-12-04 Nissan Motor Co., Ltd. Lubrication device for engine
JPH09273408A (en) * 1996-04-08 1997-10-21 Daihatsu Motor Co Ltd Chain lubricating device for internal combustion engine
DE10021221C1 (en) * 2000-04-29 2001-05-23 Porsche Ag Timing gear cover for an IC motor has two sets of holding eyes and stiffening ribs in a grid structure to reduce timing gear noise emissions
EP1482132A1 (en) * 2003-05-26 2004-12-01 HONDA MOTOR CO., Ltd. Vertical engine
EP1522682A1 (en) * 2003-10-09 2005-04-13 Ford Global Technologies, LLC A camshaft drive assembly and a case and a chain guide for a camshaft drive assembly

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