EP0597743A1 - Arrangement of a lubrication pump of an internal combustion engine - Google Patents

Arrangement of a lubrication pump of an internal combustion engine Download PDF

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Publication number
EP0597743A1
EP0597743A1 EP93402550A EP93402550A EP0597743A1 EP 0597743 A1 EP0597743 A1 EP 0597743A1 EP 93402550 A EP93402550 A EP 93402550A EP 93402550 A EP93402550 A EP 93402550A EP 0597743 A1 EP0597743 A1 EP 0597743A1
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EP
European Patent Office
Prior art keywords
pump
section
arrangement according
cylinder block
drive shaft
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
EP93402550A
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German (de)
French (fr)
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EP0597743B1 (en
Inventor
Patrick Résidence La Fontaine Garnier
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Automobiles Peugeot SA
Automobiles Citroen SA
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Automobiles Peugeot SA
Automobiles Citroen SA
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Publication of EP0597743A1 publication Critical patent/EP0597743A1/en
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Publication of EP0597743B1 publication Critical patent/EP0597743B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps

Definitions

  • the present invention relates to an arrangement of a lubricating oil pump of an internal combustion engine.
  • the invention relates more particularly to an arrangement of the type described and shown in document EP-B1-0255705 in which the pump is arranged in line with one of the intermediate bearings of the engine crankshaft and extends below the underside of the cylinder block closed by a casing forming a reserve of lubricating oil, the pump body being fixed to the underside of the cylinder block, and of the type in which the pump is driven by means a drive shaft, mounted for rotation under the underside of the cylinder block, a first end of which is connected to a drive wheel arranged substantially in line with an end bearing of the crankshaft and the second end of which is connected to the drive shaft of the pump.
  • a discharge conduit which connects the discharge port of the pump to an orifice formed in the underside of the cylinder block in the area of the latter on which is fixed a bearing for the bearing. rotation of the drive wheel.
  • This arrangement is therefore particularly complex to implement, and in particular to assemble, because it requires each time to mount and fix the pump body and the support of the drive wheel by interposing between these two elements l drive shaft and discharge pipe to be installed and connected.
  • the object of the present invention is to propose an arrangement of the type mentioned above which is of simpler design and which notably greatly facilitates its implementation.
  • the invention provides an arrangement of a lubricating oil pump of the type mentioned above, characterized in that the drive means of the pump are produced in the form of a drive module comprising a single support fixed under the underside of the cylinder block and which includes a through bore in which the drive shaft is rotatably mounted, the first end of which receives the drive wheel and the second end of which comprises a coupling device with the drive shaft of the pump.
  • a cylinder block 10 of an internal combustion engine whose flat underside 12 is closed by a casing 14 forming an oil reserve tank for the lubrication of the engine.
  • the engine notably comprises a crankshaft 16 of axis of rotation XX which is rotatably mounted in the cylinder block by several bearings including two end bearings and at least one intermediate bearing 18.
  • an oil pump 20 for the lubrication of the engine is arranged inside the casing 14, below and substantially in line with the intermediate bearing 18.
  • the pump 20 comprises a pump body or housing 22 which comprises two lateral wings 24 for its attachment to the cylinder block.
  • the upper face 26 of the pump body 20 bears, at the level of the lateral wings 24, against the lower face 12 of the cylinder block and its fixing is ensured by bolts 28.
  • the pump could be fixed at intermediate level 18.
  • the pump 20 comprises a suction strainer 30, a drive shaft 32 and a discharge duct 34 which ends in the form of a tubular discharge connection 36.
  • a drive unit or module 38 is provided.
  • the module 38 comprises a single support 40 which is a foundry piece intended to be fixed under the lower face 12 of the cylinder block 10 by fixing bolts 42 which pass through holes 46 formed at three distant points at the periphery of the support 40 and which are connected to the central part of the body 40 by webs 48 and reinforcing ribs 50.
  • a through bore 52 is provided which extends substantially over the entire length of the support.
  • the bore 52 receives, rotatably mounted by means of two bearing bushes 54, a shaft 56 for the rotary drive of the pump 20.
  • a first axial end 58 of the shaft 56 receives the hub 60 of a toothed drive wheel 62 which is itself driven by a chain 61.
  • the hub 60 is linked in rotation to the end 58 of the shaft 56 and it is linked to it in translation by a rod 63 received in corresponding grooves formed in the hub 60 and in the end 58.
  • the second end 64 of the shaft 56 which projects axially outside the bore 52 is a threaded end on which a coupling sleeve 66 is screwed.
  • the free end of the sleeve 66 comprises a hexagonal housing 68 in which is received a complementary hexagonal end portion 70 of the drive axis 32 of the pump 20.
  • the support 40 also includes a discharge conduit which connects the discharge connector 36 to an orifice 72 for the entry of lubricating oil into a conduit 74 formed in the cylinder block 10 (see FIG. 4 ).
  • the discharge conduit comprises a first section 76 which extends parallel to the bore 52 and the free inlet end of which is produced in the form of a sleeve 78 in which the connector 36 is received in leaktight manner with interposition two seals 77.
  • the first section 76 is extended by a second section 79 which is perpendicular thereto, in the vicinity of a substantially horizontal plane containing the axes of the bore 52 and of the section 76.
  • a passage 80 of reduced section is provided which makes it possible to supply the bore 52 with lubricant and thus ensure the lubrication of the bearing bushes. 54 for rotary mounting of the drive shaft 56.
  • the second section 78 is extended by a third section 81, which extends substantially vertically towards the upper face 82 of the support and which is connected to the inlet orifice 72 formed in the lower face 12 of the cylinder block.
  • the second section 79 is produced in the form of a blind bore which is closed at its open end by a threaded plug 84.
  • the whole of the support 40 is put in place by causing a translation along the arrow F of Figures 1 and 2 so as to simultaneously cause the nesting by sliding of the hexagonal end 70 of the drive axis 32 in the housing 68, and the fitting of the connector 36 in the sleeve 78.
  • the hydraulic connection by the sleeve 78 and the connector 36 also contributes to retaining the support 40 in position.

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

Abstract

The invention proposes an arrangement of the type in which the pump (20) is arranged in line with one of the intermediate bearings of the crankshaft of the engine, the body (22) of the pump being fixed under the lower face of the cylinder block, characterised in that the means for driving the pump are produced in the form of a drive module (38) comprising a single support (mount) (40) fixed under the lower face of the cylinder block and which includes an emerging bore (52) in which there is rotationally mounted the drive shaft (56), the first end (58) of which receives a drive wheel (60), and the second end (64) of which includes a device (66) for coupling to the drive spindle (32) of the pump (20), the single support (40) including a delivery pipe which connects the delivery orifice (34) of the pump (20) to an orifice formed in the lower face of the cylinder block. <IMAGE>

Description

La présente invention concerne un agencement d'une pompe à huile de lubrification d'un moteur à combustion interne.The present invention relates to an arrangement of a lubricating oil pump of an internal combustion engine.

L'invention concerne plus particulièrement un agencement du type de celui décrit et représenté dans le document EP-B1-0255705 dans lequel la pompe est agencée au droit de l'un des paliers intermédiaires du vilebrequin du moteur et s'étend en-dessous de la face inférieure du bloc-cylindres fermée par un carter formant réserve d'huile de lubrification, le corps de la pompe étant fixé à la face inférieure du bloc-cylindres, et du type dans lequel l'entraînement de la pompe est assuré au moyen d'un arbre d'entraînement, monté à rotation sous la face inférieure du bloc-cylindres, dont une première extrémité est reliée à une roue d'entraînement agencée sensiblement au droit d'un palier d'extrémité du vilebrequin et dont la seconde extrémité est reliée à l'axe d'entraînement de la pompe.The invention relates more particularly to an arrangement of the type described and shown in document EP-B1-0255705 in which the pump is arranged in line with one of the intermediate bearings of the engine crankshaft and extends below the underside of the cylinder block closed by a casing forming a reserve of lubricating oil, the pump body being fixed to the underside of the cylinder block, and of the type in which the pump is driven by means a drive shaft, mounted for rotation under the underside of the cylinder block, a first end of which is connected to a drive wheel arranged substantially in line with an end bearing of the crankshaft and the second end of which is connected to the drive shaft of the pump.

Dans un tel agencement, il est également prévu un conduit de refoulement qui relie l'orifice de refoulement de la pompe à un orifice formé dans la face inférieure du bloc-cylindres dans la zone de cette dernière sur laquelle est fixé un support du palier de rotation de la roue d'entraînement.In such an arrangement, there is also provided a discharge conduit which connects the discharge port of the pump to an orifice formed in the underside of the cylinder block in the area of the latter on which is fixed a bearing for the bearing. rotation of the drive wheel.

Cet agencement est donc particulièrement complexe à mettre en oeuvre, et notamment à assembler, car il nécessite à chaque fois de réaliser le montage et la fixation du corps de la pompe et du support de la roue d'entraînement en interposant entre ces deux éléments l'arbre d'entraînement et le conduit de refoulement à installer et à raccorder.This arrangement is therefore particularly complex to implement, and in particular to assemble, because it requires each time to mount and fix the pump body and the support of the drive wheel by interposing between these two elements l drive shaft and discharge pipe to be installed and connected.

La présente invention a pour but de proposer un agencement du type mentionné précédemment qui soit de conception plus simple et qui facilite notamment grandement sa mise en oeuvre.The object of the present invention is to propose an arrangement of the type mentioned above which is of simpler design and which notably greatly facilitates its implementation.

Dans ce but, l'invention propose un agencement d'une pompe à huile de lubrification du type mentionné plus haut, caractérisé en ce que les moyens d'entraînement de la pompe sont réalisés sous la forme d'un module d'entraînement comprenant un support unique fixé sous la face inférieure du bloc-cylindres et qui comporte un alésage débouchant dans lequel est monté à rotation l'arbre d'entraînement dont la première extrémité reçoit la roue d'entraînement et dont la seconde extrémité comporte un dispositif d'accouplement avec l'axe d'entraînement de la pompe.For this purpose, the invention provides an arrangement of a lubricating oil pump of the type mentioned above, characterized in that the drive means of the pump are produced in the form of a drive module comprising a single support fixed under the underside of the cylinder block and which includes a through bore in which the drive shaft is rotatably mounted, the first end of which receives the drive wheel and the second end of which comprises a coupling device with the drive shaft of the pump.

Selon d'autres caractéristiques de l'invention :

  • le support unique comporte un conduit de refoulement qui relie l'orifice de refoulement de la pompe à un orifice formé dans la face inférieure du bloc-cylindres ;
  • le conduit de refoulement comporte un premier tronçon dont l'extrémité d'entrée comporte des moyens de raccordement étanche avec l'orifice de refoulement de la pompe ;
  • le premier tronçon du conduit de refoulement est sensiblement parallèle à l'alésage ;
  • le dispositif d'accouplement et les moyens de raccordement sont du type à emboîtement par coulissement selon une direction parallèle à l'axe dudit alésage ;
  • le dispositif d'accouplement comporte une douille vissée sur la seconde extrémité libre de l'arbre d'entraînement et qui comporte un logement de section polygonale dans lequel est reçue une portion d'extrémité de section complémentaire de l'axe d'entraînement de la pompe ;
  • les moyens de raccordement comportent un manchon cylindrique à l'intérieur duquel est reçue, de manière coulissante et avec interposition d'au moins un joint d'étanchéité, un raccord de refoulement de la pompe ;
  • le manchon cylindrique est réalisé venu de matière par moulage avec le support ;
  • le conduit de refoulement est relié à l'alésage par un passage de section réduite pour assurer la lubrification de l'arbre d'entraînement ;
  • le premier tronçon du conduit de refoulement se prolonge par un deuxième tronçon sensiblement perpendiculaire au premier tronçon et qui s'étend dans un plan contenant les axes de l'alésage et du premier tronçon, et par un troisième tronçon qui débouche dans la face supérieure du support unique qui est en appui contre la face inférieure du bloc-cylindres.
According to other characteristics of the invention:
  • the single support comprises a discharge conduit which connects the discharge orifice of the pump to an orifice formed in the underside of the cylinder block;
  • the discharge conduit comprises a first section, the inlet end of which comprises means of sealed connection with the discharge orifice of the pump;
  • the first section of the discharge conduit is substantially parallel to the bore;
  • the coupling device and the connection means are of the sliding interlocking type in a direction parallel to the axis of said bore;
  • the coupling device comprises a socket screwed onto the second free end of the drive shaft and which comprises a housing of polygonal section in which is received an end portion of section complementary to the drive axis of the pump ;
  • the connection means comprise a cylindrical sleeve inside which is received, in a sliding manner and with the interposition of at least one seal, a discharge connection of the pump;
  • the cylindrical sleeve is produced integrally by molding with the support;
  • the discharge conduit is connected to the bore by a passage of reduced section to ensure the lubrication of the drive shaft;
  • the first section of the discharge conduit is extended by a second section substantially perpendicular to the first section and which extends in a plane containing the axes of the bore and the first section, and by a third section which opens into the upper face of the single support which bears against the underside of the cylinder block.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :

  • La figure 1 est une vue simplifiée en section partielle selon la ligne 1-1 de la figure 3 ;
  • la figure 2 est une vue de dessus du module d'entraînement selon l'invention sur laquelle certaines parties sont représentées partiellement en coupe par un plan passant par les axes de l'alésage et du premier tronçon du conduit de refoulement ;
  • la figure 3 est une vue partielle en section selon la ligne 3-3 de la figure 1 ; et
  • la figure 4 est une vue partielle en section selon la ligne 4-4 de la figure 2.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
  • Figure 1 is a simplified view in partial section along line 1-1 of Figure 3;
  • Figure 2 is a top view of the drive module according to the invention in which certain parts are shown partially in section through a plane passing through the axes of the bore and the first section of the discharge conduit;
  • Figure 3 is a partial sectional view along line 3-3 of Figure 1; and
  • FIG. 4 is a partial view in section along line 4-4 of FIG. 2.

On a représenté sur les figures un bloc-cylindres 10 d'un moteur à combustion interne dont la face inférieure plane 12 est fermée par un carter 14 formant bac de réserve d'huile pour la lubrification du moteur.There is shown in the figures a cylinder block 10 of an internal combustion engine whose flat underside 12 is closed by a casing 14 forming an oil reserve tank for the lubrication of the engine.

Le moteur comporte notamment un vilebrequin 16 d'axe de rotation X-X qui est monté à rotation dans le bloc-cylindres par plusieurs paliers dont deux paliers d'extrémité et au moins un palier intermédiaire 18.The engine notably comprises a crankshaft 16 of axis of rotation XX which is rotatably mounted in the cylinder block by several bearings including two end bearings and at least one intermediate bearing 18.

Selon un principe connu, une pompe à huile 20, pour la lubrification du moteur, est agencée à l'intérieur du carter 14, en-dessous et sensiblement au droit du palier intermédiaire 18.According to a known principle, an oil pump 20, for the lubrication of the engine, is arranged inside the casing 14, below and substantially in line with the intermediate bearing 18.

La pompe 20 comporte un corps de pompe ou boîtier 22 qui comporte deux ailes latérales 24 pour sa fixation sur le bloc-cylindres.The pump 20 comprises a pump body or housing 22 which comprises two lateral wings 24 for its attachment to the cylinder block.

A cet effet, la face supérieure 26 du corps de pompe 20 prend appui, au niveau des ailes latérales 24, contre la face inférieure 12 du bloc-cylindres et sa fixation est assurée par des boulons 28. En variante, la pompe pourrait être fixée au palier intermédiaire 18.For this purpose, the upper face 26 of the pump body 20 bears, at the level of the lateral wings 24, against the lower face 12 of the cylinder block and its fixing is ensured by bolts 28. As a variant, the pump could be fixed at intermediate level 18.

La pompe 20 comporte une crépine d'aspiration 30, un axe d'entraînement 32 et un conduit de refoulement 34 qui se termine sous la forme d'un raccord tubulaire de refoulement 36.The pump 20 comprises a suction strainer 30, a drive shaft 32 and a discharge duct 34 which ends in the form of a tubular discharge connection 36.

Conformément à l'invention, et pour assurer l'entraînement en rotation de l'axe d'entraînement 32 de la pompe 20, il est prévu une unité ou module d'entraînement 38.In accordance with the invention, and to ensure the rotary drive of the drive shaft 32 of the pump 20, a drive unit or module 38 is provided.

Le module 38 comporte un support unique 40 qui est une pièce de fonderie prévue pour être fixée sous la face inférieure 12 du bloc-cylindres 10 par des boulons de fixation 42 qui traversent des perçages 46 formés en trois points éloignés à la périphérie du support 40 et qui sont reliés à la partie centrale du corps 40 par des voiles 48 et des nervures de renfort 50.The module 38 comprises a single support 40 which is a foundry piece intended to be fixed under the lower face 12 of the cylinder block 10 by fixing bolts 42 which pass through holes 46 formed at three distant points at the periphery of the support 40 and which are connected to the central part of the body 40 by webs 48 and reinforcing ribs 50.

Dans la partie centrale du support 40, il est prévu un alésage débouchant 52 qui s'étend sensiblement sur toute la longueur du support.In the central part of the support 40, a through bore 52 is provided which extends substantially over the entire length of the support.

L'alésage 52 reçoit, monté à rotation par l'intermédiaire de deux douilles de palier 54, un arbre 56 pour l'entraînement en rotation de la pompe 20.The bore 52 receives, rotatably mounted by means of two bearing bushes 54, a shaft 56 for the rotary drive of the pump 20.

Une première extrémité axiale 58 de l'arbre 56 reçoit le moyeu 60 d'une roue d'entraînement dentée 62 qui est elle-même entraînée par une chaîne 61.A first axial end 58 of the shaft 56 receives the hub 60 of a toothed drive wheel 62 which is itself driven by a chain 61.

Le moyeu 60 est lié en rotation à l'extrémité 58 de l'arbre 56 et il lui est lié en translation par un jonc 63 reçu dans des gorges correspondantes formées dans le moyeu 60 et dans l'extrémité 58.The hub 60 is linked in rotation to the end 58 of the shaft 56 and it is linked to it in translation by a rod 63 received in corresponding grooves formed in the hub 60 and in the end 58.

La seconde extrémité 64 de l'arbre 56 qui fait saillie axialement à l'extérieur de l'alésage 52 est une extrémité filetée sur laquelle est vissée une douille d'accouplement 66.The second end 64 of the shaft 56 which projects axially outside the bore 52 is a threaded end on which a coupling sleeve 66 is screwed.

L'extrémité libre de la douille 66 comporte un logement hexagonal 68 dans lequel est reçue une portion d'extrémité hexagonale complémentaire 70 de l'axe d'entraînement 32 de la pompe 20.The free end of the sleeve 66 comprises a hexagonal housing 68 in which is received a complementary hexagonal end portion 70 of the drive axis 32 of the pump 20.

Conformément à l'invention, le support 40 comporte également un conduit de refoulement qui relie le raccord de refoulement 36 à un orifice 72 pour l'entrée d'huile de lubrification dans un conduit 74 formé dans le bloc-cylindres 10 (voir figure 4).According to the invention, the support 40 also includes a discharge conduit which connects the discharge connector 36 to an orifice 72 for the entry of lubricating oil into a conduit 74 formed in the cylinder block 10 (see FIG. 4 ).

Le conduit de refoulement comporte un premier tronçon 76 qui s'étend parallèlement à l'alésage 52 et dont l'extrémité libre d'entrée est réalisée sous la forme d'un manchon 78 dans lequel le raccord 36 est reçu de manière étanche avec interposition de deux joints d'étanchéité 77.The discharge conduit comprises a first section 76 which extends parallel to the bore 52 and the free inlet end of which is produced in the form of a sleeve 78 in which the connector 36 is received in leaktight manner with interposition two seals 77.

Le premier tronçon 76 se prolonge par un second tronçon 79 qui lui est perpendiculaire, au voisinage d'un plan sensiblement horizontal contenant les axes de l'alésage 52 et du tronçon 76.The first section 76 is extended by a second section 79 which is perpendicular thereto, in the vicinity of a substantially horizontal plane containing the axes of the bore 52 and of the section 76.

Dans la zone de raccordement des premier et second tronçons, il est prévu un passage 80 de section réduite qui permet d'alimenter en lubrifiant l'alésage 52 et d'assurer ainsi la lubrification des douilles de palier 54 pour le montage à rotation de l'arbre d'entraînement 56.In the connection area of the first and second sections, a passage 80 of reduced section is provided which makes it possible to supply the bore 52 with lubricant and thus ensure the lubrication of the bearing bushes. 54 for rotary mounting of the drive shaft 56.

Le deuxième tronçon 78 se prolonge par un troisième tronçon 81, qui s'étend sensiblement verticalement en direction de la face supérieure 82 du support et qui est relié à l'orifice d'entrée 72 formé dans la face inférieure 12 du bloc-cylindres.The second section 78 is extended by a third section 81, which extends substantially vertically towards the upper face 82 of the support and which is connected to the inlet orifice 72 formed in the lower face 12 of the cylinder block.

Le deuxième tronçon 79 est réalisé sous la forme d'un perçage borgne qui est fermé à son extrémité ouverte par un bouchon fileté 84.The second section 79 is produced in the form of a blind bore which is closed at its open end by a threaded plug 84.

La mise en oeuvre de l'unité d'entraînement 38 réalisée conformément aux enseignements de l'invention est particulièrement aisée.The implementation of the drive unit 38 produced in accordance with the teachings of the invention is particularly easy.

En effet, après avoir réalisé son assemblage en introduisant l'arbre d'entraînement 56 dans l'alésage 52 avec la roue d'entraînement 62 montée sur l'extrémité 58 et en vissant la douille d'accouplement 66, il ne reste plus qu'à venir fixer l'ensemble, en une seule opération, à la face inférieure 12 du bloc-cylindres.Indeed, after having completed its assembly by introducing the drive shaft 56 into the bore 52 with the drive wheel 62 mounted on the end 58 and by screwing the coupling sleeve 66, there remains only 'to come fix the assembly, in a single operation, to the underside 12 of the cylinder block.

A cet effet, l'ensemble du support 40 est mis en place en provoquant une translation selon la flèche F des figures 1 et 2 de manière à provoquer simultanément l'emboîtement par coulissement de l'extrémité hexagonale 70 de l'axe d'entraînement 32 dans le logement 68, et l'emboîtement du raccord 36 dans le manchon 78.To this end, the whole of the support 40 is put in place by causing a translation along the arrow F of Figures 1 and 2 so as to simultaneously cause the nesting by sliding of the hexagonal end 70 of the drive axis 32 in the housing 68, and the fitting of the connector 36 in the sleeve 78.

Il ne reste plus alors qu'à fixer le support 40, en position montée et accouplée, par les boulons 42.It then only remains to fix the support 40, in the assembled and coupled position, by the bolts 42.

Le raccordement hydraulique par le manchon 78 et le raccord 36 participe également à la retenue en position du support 40.The hydraulic connection by the sleeve 78 and the connector 36 also contributes to retaining the support 40 in position.

Claims (10)

Agencement d'une pompe à huile (20) de lubrification d'un moteur à combustion, du type dans lequel la pompe (20) est agencée au droit de l'un (18) des paliers intermédiaires du vilebrequin du moteur et s'étend en-dessous de la face inférieure (12) du bloc-cylindres (10) fermée par un carter (14) formant réserve d'huile de lubrification, le corps (22) de la pompe étant fixé à ladite face inférieure (12), et du type dans lequel l'entraînement de la pompe est assuré au moyen d'un arbre d'entraînement (56) monté à rotation sous la face inférieure du bloc-cylindres, dont une première extrémité (58) est reliée à une roue d'entraînement (62) agencée sensiblement au droit d'un palier d'extrémité du vilebrequin et dont la seconde extrémité (64) est reliée à l'axe d'entraînement (32) de la pompe, caractérisé en ce que les moyens d'entraînement de la pompe sont réalisés sous la forme d'un module d'entraînement (38) comprenant un support unique (40) fixé sous la face inférieure (12) du bloc-cylindres (10) et qui comporte un alésage (52) débouchant dans lequel est monté à rotation l'arbre d'entraînement (56) dont la première extrémité (58) reçoit la roue d'entraînement (62) et dont la seconde extrémité (64) comporte un dispositif (66) d'accouplement avec l'axe d'entraînement (32) de la pompe (20).Arrangement of an oil pump (20) for lubricating a combustion engine, of the type in which the pump (20) is arranged in line with one (18) of the intermediate bearings of the engine crankshaft and extends below the lower face (12) of the cylinder block (10) closed by a casing (14) forming a reserve of lubricating oil, the body (22) of the pump being fixed to said lower face (12), and of the type in which the pump is driven by means of a drive shaft (56) rotatably mounted under the underside of the cylinder block, a first end (58) of which is connected to a wheel drive (62) arranged substantially in line with an end bearing of the crankshaft and the second end (64) of which is connected to the drive shaft (32) of the pump, characterized in that the means for pump drive are made in the form of a drive module (38) comprising a single support (40) fixed under the underside (12) of the cylinder block (10) and which has a through bore (52) in which the drive shaft (56) is rotatably mounted, the first end (58) of which receives the drive wheel (62) and the second end (64) of which comprises a device (66) for coupling with the drive shaft (32) of the pump (20). Agencement selon la revendication 1, caractérisé en ce que le support unique (40) comporte un conduit de refoulement qui relie l'orifice de refoulement (34) de la pompe (20) à un orifice (72) formé dans la face inférieure (12) du bloc-cylindres.Arrangement according to claim 1, characterized in that the single support (40) comprises a discharge conduit which connects the discharge orifice (34) of the pump (20) to an orifice (72) formed in the lower face (12 ) of the cylinder block. Agencement selon la revendication 2, caractérisé en ce que le conduit de refoulement comporte un premier tronçon (76) dont l'extrémité d'entrée comporte des moyens (78, 80) de raccordement étanche avec l'orifice de refoulement de la pompe.Arrangement according to claim 2, characterized in that the discharge conduit comprises a first section (76) whose inlet end comprises means (78, 80) for tight connection with the discharge port of the pump. Agencement selon la revendication 3, caractérisé en ce que le premier tronçon (76) du conduit de refoulement est sensiblement parallèle audit alésage (52).Arrangement according to claim 3, characterized in that the first section (76) of the discharge conduit is substantially parallel to said bore (52). Agencement selon la revendication 4, caractérisé en ce que le dispositif d'accouplement (66) et les moyens de raccordement (36, 78) sont du type à emboîtement par coulissement selon une direction (F) parallèle à l'axe dudit alésage (52).Arrangement according to claim 4, characterized in that the coupling device (66) and the connection means (36, 78) are of the sliding interlocking type in a direction (F) parallel to the axis of said bore (52 ). Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif d'accouplement comporte une douille (66) vissée sur la seconde extrémité libre (64) de l'arbre d'entraînement (56) et qui comporte un logement (68) de section polygonale dans lequel est reçue une portion d'extrémité (70) de section complémentaire de l'axe d'entraînement (32) de la pompe (20).Arrangement according to any one of the preceding claims, characterized in that the coupling device comprises a socket (66) screwed onto the second free end (64) of the drive shaft (56) and which comprises a housing ( 68) of polygonal section in which is received an end portion (70) of complementary section of the drive shaft (32) of the pump (20). Agencement selon l'une quelconque des revendications 3 à 5, caractérisé en ce que les moyens de raccordement comportent un manchon cylindrique (78) à l'intérieur duquel est reçue, de manière coulissante et avec interposition d'au moins un joint d'étanchéité (77), un raccord de refoulement (36) de la pompe.Arrangement according to any one of claims 3 to 5, characterized in that the connection means comprise a cylindrical sleeve (78) inside which is received, in a sliding manner and with the interposition of at least one seal (77), a discharge connection (36) of the pump. Agencement selon la revendication 7, caractérisé en ce que le manchon cylindrique (78) est réalisé venu de matière par moulage avec le support (40).Arrangement according to claim 7, characterized in that the cylindrical sleeve (78) is produced integrally by molding with the support (40). Agencement selon l'une quelconque des revendications 2 à 8, caractérisé en ce que le conduit de refoulement est relié par un passage (80) de section réduite audit alésage (52) pour assurer la lubrification de l'arbre d'entraînement (56).Arrangement according to any one of claims 2 to 8, characterized in that the discharge conduit is connected by a passage (80) of reduced section to said bore (52) to ensure the lubrication of the drive shaft (56) . Agencement selon la revendication 4, caractérisé en ce que le premier tronçon (76) du conduit de refoulement se prolonge par un deuxième tronçon sensiblement perpendiculaire au premier tronçon (76) et qui s'étend au voisinage d'un plan contenant les axes de l'alésage et du premier tronçon, et par un troisième tronçon (81) qui débouche dans la face supérieure (82) du support qui est en appui contre la face inférieure (12) du bloc-cylindres (10).Arrangement according to claim 4, characterized in that the first section (76) of the discharge conduit is extended by a second section substantially perpendicular to the first section (76) and which extends in the vicinity of a plane containing the axes of the bore and the first section, and by a third section (81) which opens into the upper face (82) of the support which bears against the underside (12) of the cylinder block (10).
EP19930402550 1992-11-12 1993-10-15 Arrangement of a lubrication pump of an internal combustion engine Expired - Lifetime EP0597743B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9213620 1992-11-12
FR9213620A FR2697896B1 (en) 1992-11-12 1992-11-12 Arrangement of a lubricating oil pump of a combustion engine.

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EP0597743A1 true EP0597743A1 (en) 1994-05-18
EP0597743B1 EP0597743B1 (en) 1996-09-11

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EP19930402550 Expired - Lifetime EP0597743B1 (en) 1992-11-12 1993-10-15 Arrangement of a lubrication pump of an internal combustion engine

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EP (1) EP0597743B1 (en)
DE (1) DE69304655T2 (en)
FR (1) FR2697896B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423707A (en) * 1982-09-24 1984-01-03 Sihon Tanas M Engine with internal crankcase bridge having integral oil pump and drive housing
EP0255705B1 (en) * 1986-08-05 1991-04-03 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Internal combustion engine
JPH04279709A (en) * 1991-03-08 1992-10-05 Yanmar Diesel Engine Co Ltd Fitting mechanism for lubrication oil pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423707A (en) * 1982-09-24 1984-01-03 Sihon Tanas M Engine with internal crankcase bridge having integral oil pump and drive housing
EP0255705B1 (en) * 1986-08-05 1991-04-03 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Internal combustion engine
JPH04279709A (en) * 1991-03-08 1992-10-05 Yanmar Diesel Engine Co Ltd Fitting mechanism for lubrication oil pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 17, no. 80 (M - 1368) 17 February 1993 (1993-02-17) *

Also Published As

Publication number Publication date
FR2697896A1 (en) 1994-05-13
DE69304655T2 (en) 1997-01-23
FR2697896B1 (en) 1995-02-17
EP0597743B1 (en) 1996-09-11
DE69304655D1 (en) 1996-10-17

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