WO2014072637A1 - Adaptable and compact vacuum pump module for internal combustion engine and corresponding internal combustion engine - Google Patents

Adaptable and compact vacuum pump module for internal combustion engine and corresponding internal combustion engine Download PDF

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Publication number
WO2014072637A1
WO2014072637A1 PCT/FR2013/052646 FR2013052646W WO2014072637A1 WO 2014072637 A1 WO2014072637 A1 WO 2014072637A1 FR 2013052646 W FR2013052646 W FR 2013052646W WO 2014072637 A1 WO2014072637 A1 WO 2014072637A1
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WO
WIPO (PCT)
Prior art keywords
vacuum pump
crankcase
roller
support
internal combustion
Prior art date
Application number
PCT/FR2013/052646
Other languages
French (fr)
Inventor
Xavier LE BOULANGER
Original Assignee
Peugeot Citroen Automobiles Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Publication of WO2014072637A1 publication Critical patent/WO2014072637A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/0068—Adaptations for other accessories

Definitions

  • the invention relates to an adaptable and compact vacuum pump module for an internal combustion engine of a motor vehicle and the corresponding internal combustion engine.
  • Some motor vehicles are equipped with a vacuum pump for supplying a source of vacuum necessary for the operation of various equipment, for example braking amplification devices, exhaust gas recirculation devices, control devices for sunroofs, etc.
  • Other vehicles are not equipped with a vacuum pump, which creates a great diversity of configurations of the engine parts, in particular the crankcases.
  • the invention aims to remedy this drawback by proposing a vacuum pump module easily adaptable to engine casings that are not provided a priori to integrate a vacuum pump and without changing the engine environment.
  • the subject of the invention is a vacuum pump module for an internal combustion engine, characterized in that it comprises:
  • a vacuum pump having a drive shaft
  • a support comprising a fixing interface with the vacuum pump, a fixing interface with a crankcase, and a conduit providing communication between an air discharge port of the vacuum pump and an opening in the crankcase.
  • the vacuum pump module according to the invention which has a compact configuration, can easily be integrated into an existing engine by fixing it to the crankcase via its support and by cooperating with the device.
  • friction drive with the back of an engine transmission belt According to one embodiment, the friction drive system comprises a first roller, said drive roller, mounted on the drive shaft, and a second roller, said transmission roller, intended to bear against the drive roller and against the back of the drive belt.
  • the module further comprises an arm connected on the one hand to the transmission roller and on the other hand to a tensioning device, this tensioning device being able to apply via the arm , a force on the transmission roller to press it against the drive roller and against the back of the drive belt.
  • the bracket of the support interface with the crankcase comprises a plate having edges intended to be pressed against the crankcase around the opening in the crankcase and fixing means to the crankcase. crossing the edges of the plate.
  • an end of the conduit of the support opening on the side of the crankcase is formed by a deformation of the plate which has locally a bowl shape whose recess is intended to come opposite the opening of the crankcase engine.
  • the interface for fixing the support with the vacuum pump comprises a wall intended to be positioned vis-à-vis a body of the vacuum pump, this wall having openings for the vacuum pump. passage of fixing means ensuring the assembly between the vacuum pump and the support.
  • the drive shaft being formed by a first shaft belonging to the vacuum pump and a second shaft on which is mounted the drive roller, the mounting interface of the support with the pump to vacuum comprises a coupling device between the two shafts.
  • the vacuum pump module further comprises a vacuum reserve having an inlet nozzle connected to the vacuum pump and at least one outlet nozzle connected to one or more solenoid valves.
  • the vacuum pump module further comprises a deflector ensuring its protection.
  • the invention also relates to an internal combustion engine characterized in that it comprises a motor housing having an opening in one of its walls side on which is likely to be fixed the vacuum pump module according to the invention through its support.
  • Figure 1 shows a perspective view of an internal combustion engine having a crankcase adapted to integrate the vacuum pump module according to the invention
  • Figure 2 shows a perspective view of the vacuum pump module according to the invention integrated on the crankcase of the internal combustion engine of Figure 1;
  • Figure 3 shows a detailed perspective view of the vacuum pump module according to the invention with a transmission belt belonging to the engine;
  • Figure 4 shows a side view of the vacuum pump module according to the invention
  • Figure 5 shows a rear view of the vacuum pump module according to the invention.
  • FIG. 1 shows an internal combustion engine 1 of a motor vehicle comprising a crankcase 2 and an engine accessory drive device 3 that can take for example the shape of an air-conditioning compressor or an alternator.
  • This device 3 comprises for this purpose a first transmission belt 5 installed around a drive pulley 6 associated with the alternator, a drive pulley 8 associated with the air conditioning compressor, and a driving pulley 9 driven by the crankshaft.
  • a second transmission belt January 1 is installed around the drive pulley 9 and a drive pulley 12 of the water pump.
  • the crankcase 2 has in one of its side walls an opening 14 to a space where is located a balancing system of the engine. This opening is closed by a plate 15 of generally rectangular shape. In the case where the vehicle does not require the integration of a vacuum pump, the plate 15 is left in place to seal the opening 14 of the crankcase.
  • the vacuum pump 18 which comprises an air suction port and an air discharge port may be for example a pallet pump as described in FR2950940.
  • This pump 18 comprises a cylindrical rotor rotatably mounted and eccentrically in a body of the pump and a pallet slidably mounted within a groove in the rotor.
  • the vacuum pump module 21 comprises a support 22 having an attachment interface 25 to the vacuum pump and an attachment interface 26 to the crankcase and a conduit 27. shown in Figure 5 providing a communication between the air discharge port of the pump 18 and the opening 14 of the crankcase 2.
  • the vacuum pump 18 comprises a drive shaft 30 at the end of which is mounted a first roller 31, said drive roller.
  • a second roller 32 said transmission roller is in abutment against the drive roller 31 and against the back of the belt 1 1 of the engine at level of the pulley 12 of the water pump.
  • the transmission roller 32 is surrounded by a housing 35 providing protection.
  • the transmission roller 32 and the roller 31 are for example made of rubber to facilitate their friction drive by the belt 1 January.
  • the roller 31 and the transmission roller 32 belong to the friction drive system 36 of the vacuum pump 18.
  • the module 21 has an arm 39 clearly visible in Figures 3 and 4 connected on the one hand to the transmission roller 32 and on the other hand to a device 40 for tensioning.
  • This tensioning device 40 allows, via the arm 39, to apply to the transmission roller 32 a force represented by the arrow F1 in the direction of the lower part of the casing so as to press the transmission roller 32 against the roller 31 and against the back of the transmission belt 1 1 located around the pulley of the water pump. This ensures a drive of the vacuum pump 18 regardless of the state of wear of the transmission belt January 1.
  • a protective element 41 is positioned around an opening of the tensioning device 40 by which the arm 39 penetrates in order to ensure a seal between the bottom 39 and the device. 40.
  • the drive shaft 30 is formed by a first shaft 301 belonging to the vacuum pump 18 and a second shaft 302 on which is mounted the roller 31. These two shafts 301 and 302 are coupled to each other by a coupling system with tocs referenced 44.
  • the mounting interface 26 of the support with the crankcase 2 clearly visible in Figures 3 and 5 is formed by a plate 46 having its edges to be pressed against the wall of the crankcase 2 around the opening 14 instead of the closure plate 15.
  • the fixing of the support 22 on the crankcase 2 is provided by means of fasteners 47 taking for example the form of four screws passing through the edges of the plate 46 and screwed on the crankcase 2.
  • This attachment may be reinforced by two pins, one of which is visible is referenced 49.
  • An end 271 of the conduit 27 of the support opening on the side of the opening 14 of the crankcase 2 is formed by a deformation of the plate 46 which has locally, between its edges pressed against the crankcase 2, a bowl shape whose hollow is positioned opposite the opening 14.
  • the interface for fixing the support with the vacuum pump 18 comprises a wall 48 intended to be positioned opposite the body of the vacuum pump 18.
  • This wall 48 has openings for the passage of fastening means 52 ensuring the connection between the vacuum pump 18 and the support 22.
  • fastening means 52 may for example take the form of screws passing through the openings of the wall 48 and screwed into tappings formed in the body of the vacuum pump 18.
  • the wall 48 extends in a plane substantially perpendicular to the plate 46 of the attachment interface 26 to the crankcase 2.
  • the interface 25 comprises also the coupling device 44 between the two shafts 301 and 302.
  • the support 22 also comprises a wall 54 coming from an edge of the wall 46 having studs 55 whose free ends are intended to come opposite openings made. in ears 57 of the tensioning device 40. Fixing means 60 passing through the openings of the lugs 57 and internal bores of the studs 55 ensure the attachment of the assembly.
  • the wall 54 extends substantially parallel to the wall 48 of the attachment interface 25 with the vacuum pump 18.
  • the module 21 preferably comprises a vacuum reserve 62, which reduces the size of the pump 18 used. This increases the compactness of the whole.
  • This vacuum reserve 62 has an inlet nozzle connected to the pump at vacuum 18 and at least one outlet tapping connected to one or more solenoid valves via a pipe referenced 63.
  • a deflector 65 shown in FIG. 3 is provided to protect the vacuum pump module 21 from splashes of water or pebbles in particular that may occur during the movement of the vehicle.
  • the deflector 65 has a lateral edge connected to the wall 48 of the fixing interface 25 with the vacuum pump 18.
  • the support 22 is made of plastics material. All the aforementioned forms of the support 22 can thus be easily obtained by molding. However, other types of materials are of course conceivable. The choice of material will depend on the application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The invention relates chiefly to an adaptable and compact vacuum pump module (21) for an internal combustion engine (1). According to the invention, this module (21) comprises a vacuum pump (18) having a drive shaft (30) and a system (36) for the friction driving of the drive shaft (30) and able to collaborate with the back of an engine transmission belt (11). The module also comprises a support (22) comprising an interface for attachment to the vacuum pump, an interface (26) for fixing to an engine crankcase (2), and a pipe providing communication between an air discharge orifice of the vacuum pump and an opening made in the engine crankcase. The invention also relates to the corresponding internal combustion engine (1).

Description

MODULE DE POMPE A VIDE ADAPTABLE ET COMPACT POUR  VACUUM PUMP MODULE ADAPTABLE AND COMPACT FOR
MOTEUR A COMBUSTION INTERNE ET MOTEUR A COMBUSTION INTERNE CORRESPONDANT  INTERNAL COMBUSTION ENGINE AND CORRESPONDING INTERNAL COMBUSTION ENGINE
[oooi] La présente invention revendique la priorité de la demande française 1260700 déposée le 12 novembre 2012 dont le contenu (texte, dessins et revendications) est ici incorporé par référence. [Oooi] The present invention claims the priority of the French application 1260700 filed on November 12, 2012 whose content (text, drawings and claims) is here incorporated by reference.
[0002] L'invention porte sur un module de pompe à vide adaptable et compact pour un moteur à combustion interne de véhicule automobile ainsi que sur le moteur à combustion interne correspondant.  The invention relates to an adaptable and compact vacuum pump module for an internal combustion engine of a motor vehicle and the corresponding internal combustion engine.
[0003] Certains véhicules automobiles sont équipés d'une pompe à vide destinée à alimenter une source de vide nécessaire au fonctionnement d'équipements divers, par exemple des dispositifs d'amplification de freinage, des dispositifs de recyclage de gaz d'échappement, des dispositifs de commande de toits ouvrants, etc.. D'autres véhicules ne sont pas équipés de pompe à vide, ce qui crée une grande diversité de configurations des pièces moteurs, en particulier les carters moteur. Some motor vehicles are equipped with a vacuum pump for supplying a source of vacuum necessary for the operation of various equipment, for example braking amplification devices, exhaust gas recirculation devices, control devices for sunroofs, etc. Other vehicles are not equipped with a vacuum pump, which creates a great diversity of configurations of the engine parts, in particular the crankcases.
[0004] L'invention vise à remédier à cet inconvénient en proposant un module de pompe à vide facilement adaptable à des carters moteur qui ne sont pas prévus a priori pour intégrer une pompe à vide et ce, sans modification de l'environnement moteur.  The invention aims to remedy this drawback by proposing a vacuum pump module easily adaptable to engine casings that are not provided a priori to integrate a vacuum pump and without changing the engine environment.
[0005] A cet effet, l'invention a pour objet un module de pompe à vide pour moteur à combustion interne, caractérisé en ce qu'il comporte :  For this purpose, the subject of the invention is a vacuum pump module for an internal combustion engine, characterized in that it comprises:
- une pompe à vide ayant un arbre d'entraînement,  a vacuum pump having a drive shaft,
- un système d'entraînement par friction de l'arbre d'entraînement de la pompe à vide apte à coopérer avec le dos d'une courroie de transmission du moteur, et  - a friction drive system of the drive shaft of the vacuum pump adapted to cooperate with the back of a transmission belt of the engine, and
- un support comportant une interface de fixation avec la pompe à vide, une interface de fixation avec un carter moteur, et un conduit assurant une communication entre un orifice de refoulement d'air de la pompe à vide et une ouverture ménagée dans le carter moteur. a support comprising a fixing interface with the vacuum pump, a fixing interface with a crankcase, and a conduit providing communication between an air discharge port of the vacuum pump and an opening in the crankcase. .
[0006] Ainsi, le module de pompe à vide selon l'invention, qui présente une configuration compacte, pourra aisément être intégré à un moteur existant en le fixant au carter moteur par l'intermédiaire de son support et en faisant coopérer le dispositif d'entraînement par friction avec le dos d'une courroie de transmission du moteur. [0007] Selon une réalisation, le système d'entraînement par friction comporte un premier galet, dit galet d'entraînement, monté sur l'arbre d'entraînement, et un deuxième galet, dit galet de transmission, destiné à venir en appui contre le galet d'entraînement et contre le dos de la courroie de transmission. Thus, the vacuum pump module according to the invention, which has a compact configuration, can easily be integrated into an existing engine by fixing it to the crankcase via its support and by cooperating with the device. friction drive with the back of an engine transmission belt. According to one embodiment, the friction drive system comprises a first roller, said drive roller, mounted on the drive shaft, and a second roller, said transmission roller, intended to bear against the drive roller and against the back of the drive belt.
[0008] Selon une réalisation, le module comporte en outre un bras relié d'une part au galet de transmission et d'autre part à un dispositif de mise en tension, ce dispositif de mise en tension étant apte à appliquer, via le bras, un effort sur le galet de transmission pour le plaquer contre le galet d'entraînement et contre le dos de la courroie de transmission. According to one embodiment, the module further comprises an arm connected on the one hand to the transmission roller and on the other hand to a tensioning device, this tensioning device being able to apply via the arm , a force on the transmission roller to press it against the drive roller and against the back of the drive belt.
[0009] Selon une réalisation, l'interface de fixation du support avec le carter moteur comporte une plaque ayant des bords destinés à être plaqués contre le carter moteur autour de l'ouverture ménagée dans le carter moteur et des moyens de fixation au carter moteur traversant les bords de la plaque. According to one embodiment, the bracket of the support interface with the crankcase comprises a plate having edges intended to be pressed against the crankcase around the opening in the crankcase and fixing means to the crankcase. crossing the edges of the plate.
[ooi o] Selon une réalisation, une extrémité du conduit du support débouchant du côté du carter moteur est formée par une déformation de la plaque qui présente localement une forme de cuvette dont le creux est destiné à venir en regard de l'ouverture du carter moteur.  [ooi o] According to one embodiment, an end of the conduit of the support opening on the side of the crankcase is formed by a deformation of the plate which has locally a bowl shape whose recess is intended to come opposite the opening of the crankcase engine.
[ooi i] Selon une réalisation, l'interface de fixation du support avec la pompe à vide comporte une paroi destinée à être positionnée en vis-à-vis d'un corps de la pompe à vide, cette paroi comportant des ouvertures pour le passage de moyens de fixation assurant l'assemblage entre la pompe à vide et le support.  According to one embodiment, the interface for fixing the support with the vacuum pump comprises a wall intended to be positioned vis-à-vis a body of the vacuum pump, this wall having openings for the vacuum pump. passage of fixing means ensuring the assembly between the vacuum pump and the support.
[0012] Selon une réalisation, l'arbre d'entraînement étant formé par un premier arbre appartenant à la pompe à vide et un deuxième arbre sur lequel est monté le galet d'entraînement, l'interface de fixation du support avec la pompe à vide comporte un dispositif d'accouplement entre les deux arbres.  According to one embodiment, the drive shaft being formed by a first shaft belonging to the vacuum pump and a second shaft on which is mounted the drive roller, the mounting interface of the support with the pump to vacuum comprises a coupling device between the two shafts.
[0013] Selon une réalisation, le module de pompe à vide comporte en outre une réserve de vide ayant un piquage d'entrée relié à la pompe à vide et au moins un piquage de sortie relié à une ou plusieurs électrovannes.  According to one embodiment, the vacuum pump module further comprises a vacuum reserve having an inlet nozzle connected to the vacuum pump and at least one outlet nozzle connected to one or more solenoid valves.
[0014] Selon une réalisation, le module de pompe à vide comporte en outre un déflecteur assurant sa protection.  In one embodiment, the vacuum pump module further comprises a deflector ensuring its protection.
[0015] L'invention a également pour objet un moteur à combustion interne caractérisé en ce qu'il comporte un carter moteur ayant une ouverture ménagée dans une de ses parois latérales sur laquelle est susceptible d'être fixé le module de pompe à vide selon l'invention par l'intermédiaire de son support. The invention also relates to an internal combustion engine characterized in that it comprises a motor housing having an opening in one of its walls side on which is likely to be fixed the vacuum pump module according to the invention through its support.
[0016] L'invention sera mieux comprise à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Ces figures ne sont données qu'à titre illustratif mais nullement limitatif de l'invention.  The invention will be better understood on reading the description which follows and the examination of the figures that accompany it. These figures are given for illustrative but not limiting of the invention.
[0017] La figure 1 montre une vue en perspective d'un moteur à combustion interne ayant un carter moteur apte à intégrer le module de pompe à vide selon l'invention ;  Figure 1 shows a perspective view of an internal combustion engine having a crankcase adapted to integrate the vacuum pump module according to the invention;
[0018] La figure 2 montre une vue en perspective du module de pompe à vide selon l'invention intégré sur le carter moteur du moteur à combustion interne de la figure 1 ;  [0018] Figure 2 shows a perspective view of the vacuum pump module according to the invention integrated on the crankcase of the internal combustion engine of Figure 1;
[0019] La figure 3 montre une vue en perspective détaillée du module de pompe à vide selon l'invention avec une courroie de transmission appartenant au moteur; Figure 3 shows a detailed perspective view of the vacuum pump module according to the invention with a transmission belt belonging to the engine;
[0020] La figure 4 montre une vue de côté du module de pompe à vide selon l'invention; [0020] Figure 4 shows a side view of the vacuum pump module according to the invention;
[0021 ] La figure 5 montre une vue de dos du module de pompe à vide selon l'invention.Figure 5 shows a rear view of the vacuum pump module according to the invention.
[0022] Les éléments identiques, similaires ou analogues conservent la même référence d'une figure à l'autre. Identical, similar or similar elements retain the same reference from one figure to another.
[0023] La figure 1 montre un moteur 1 à combustion interne d'un véhicule automobile comportant un carter moteur 2 et un dispositif d'entraînement 3 d'accessoires du moteur pouvant prendre par exemple la forme d'un compresseur de climatisation ou d'un alternateur. Ce dispositif 3 comporte à cet effet une première courroie de transmission 5 installée autour d'une poulie d'entraînement 6 associée à l'alternateur, d'une poulie d'entraînement 8 associée au compresseur de climatisation, et d'une poulie motrice 9 entraînée par le vilebrequin. Une deuxième courroie de transmission 1 1 est installée autour de la poulie motrice 9 et d'une poulie d'entraînement 12 de la pompe à eau.  FIG. 1 shows an internal combustion engine 1 of a motor vehicle comprising a crankcase 2 and an engine accessory drive device 3 that can take for example the shape of an air-conditioning compressor or an alternator. This device 3 comprises for this purpose a first transmission belt 5 installed around a drive pulley 6 associated with the alternator, a drive pulley 8 associated with the air conditioning compressor, and a driving pulley 9 driven by the crankshaft. A second transmission belt January 1 is installed around the drive pulley 9 and a drive pulley 12 of the water pump.
[0024] Le carter moteur 2 présente dans une de ses parois latérales une ouverture 14 vers un espace où est situé un système d'équilibrage du moteur. Cette ouverture est fermée par une platine 15 de forme globalement rectangulaire. Dans le cas où le véhicule ne nécessite pas l'intégration d'une pompe à vide, la platine 15 est laissée en place afin de fermer hermétiquement l'ouverture 14 du carter moteur.  The crankcase 2 has in one of its side walls an opening 14 to a space where is located a balancing system of the engine. This opening is closed by a plate 15 of generally rectangular shape. In the case where the vehicle does not require the integration of a vacuum pump, the plate 15 is left in place to seal the opening 14 of the crankcase.
[0025] En revanche, dans le cas où il est nécessaire d'intégrer une pompe à vide 18, la platine 15 est retirée et un module 21 portant la pompe 18 est fixé sur le carter moteur 2 comme cela est visible sur la figure 2. [0026] La pompe à vide 18 qui comporte un orifice d'aspiration d'air et un orifice de refoulement d'air pourra être par exemple une pompe à palette comme décrit dans le document FR2950940. Cette pompe 18 comporte un rotor cylindrique monté rotatif et de façon excentrique dans un corps de la pompe et une palette montée coulissante à l'intérieur d'une rainure ménagée dans le rotor. On se rapportera au document précité pour plus de détails sur la réalisation d'une telle pompe. However, in the case where it is necessary to integrate a vacuum pump 18, the plate 15 is removed and a module 21 carrying the pump 18 is fixed on the crankcase 2 as can be seen in Figure 2 . The vacuum pump 18 which comprises an air suction port and an air discharge port may be for example a pallet pump as described in FR2950940. This pump 18 comprises a cylindrical rotor rotatably mounted and eccentrically in a body of the pump and a pallet slidably mounted within a groove in the rotor. We will refer to the aforementioned document for more details on the realization of such a pump.
[0027] Plus précisément, comme montré sur la figure 3, le module 21 de pompe à vide comporte un support 22 ayant une interface de fixation 25 à la pompe à vide et une interface de fixation 26 au carter moteur ainsi qu'un conduit 27 montré sur la figure 5 assurant une communication entre l'orifice de refoulement d'air de la pompe 18 et l'ouverture 14 du carter moteur 2.  More precisely, as shown in FIG. 3, the vacuum pump module 21 comprises a support 22 having an attachment interface 25 to the vacuum pump and an attachment interface 26 to the crankcase and a conduit 27. shown in Figure 5 providing a communication between the air discharge port of the pump 18 and the opening 14 of the crankcase 2.
[0028] Comme cela est bien visible sur les figures 2 et 3, la pompe à vide 18 comporte un arbre d'entraînement 30 à l'extrémité duquel est monté un premier galet 31 , dit galet d'entraînement. Pour assurer l'entraînement en rotation de l'arbre 30 de la pompe à vide 18, un deuxième galet 32, dit galet de transmission est en appui contre le galet d'entraînement 31 et contre le dos de la courroie 1 1 du moteur au niveau de la poulie 12 de la pompe à eau. Le galet de transmission 32 est entouré par un boîtier 35 assurant sa protection. Le galet de transmission 32 ainsi que le galet 31 sont par exemple réalisés en caoutchouc pour faciliter leur entraînement par friction par la courroie 1 1 . Le galet 31 et le galet de transmission 32 appartiennent au système d'entraînement par friction 36 de la pompe à vide 18.  As is clearly visible in Figures 2 and 3, the vacuum pump 18 comprises a drive shaft 30 at the end of which is mounted a first roller 31, said drive roller. To ensure the rotational drive of the shaft 30 of the vacuum pump 18, a second roller 32, said transmission roller is in abutment against the drive roller 31 and against the back of the belt 1 1 of the engine at level of the pulley 12 of the water pump. The transmission roller 32 is surrounded by a housing 35 providing protection. The transmission roller 32 and the roller 31 are for example made of rubber to facilitate their friction drive by the belt 1 January. The roller 31 and the transmission roller 32 belong to the friction drive system 36 of the vacuum pump 18.
[0029] En outre, le module 21 comporte un bras 39 bien visible sur les figures 3 et 4 relié d'une part au galet de transmission 32 et d'autre part à un dispositif 40 de mise en tension. Ce dispositif 40 de mise en tension permet, via le bras 39, d'appliquer sur le galet de transmission 32 un effort représenté par la flèche F1 en direction de la partie inférieure du carter de manière à plaquer le galet de transmission 32 contre le galet 31 et contre le dos de la courroie de transmission 1 1 située autour de la poulie de la pompe à eau. On garantit ainsi un entraînement de la pompe à vide 18 quel que soit l'état d'usure de la courroie de transmission 1 1 .  In addition, the module 21 has an arm 39 clearly visible in Figures 3 and 4 connected on the one hand to the transmission roller 32 and on the other hand to a device 40 for tensioning. This tensioning device 40 allows, via the arm 39, to apply to the transmission roller 32 a force represented by the arrow F1 in the direction of the lower part of the casing so as to press the transmission roller 32 against the roller 31 and against the back of the transmission belt 1 1 located around the pulley of the water pump. This ensures a drive of the vacuum pump 18 regardless of the state of wear of the transmission belt January 1.
[0030] De préférence, un élément de protection 41 , ici de forme tronconique, est positionné autour d'une ouverture du dispositif 40 de mise en tension par laquelle pénètre le bras 39 afin d'assurer une étanchéité entre le bas 39 et le dispositif 40. Preferably, a protective element 41, here of frustoconical shape, is positioned around an opening of the tensioning device 40 by which the arm 39 penetrates in order to ensure a seal between the bottom 39 and the device. 40.
[0031 ] En l'occurrence, comme montré sur la figure 3, l'arbre d'entraînement 30 est formé par un premier arbre 301 appartenant à la pompe à vide 18 et un deuxième arbre 302 sur lequel est monté le galet 31 . Ces deux arbres 301 et 302 sont accouplés entre eux par un système d'accouplement à tocs référencés 44. In this case, as shown in Figure 3, the drive shaft 30 is formed by a first shaft 301 belonging to the vacuum pump 18 and a second shaft 302 on which is mounted the roller 31. These two shafts 301 and 302 are coupled to each other by a coupling system with tocs referenced 44.
[0032] L'interface de fixation 26 du support avec le carter moteur 2 bien visible sur les figures 3 et 5 est formée par une plaque 46 ayant ses bords destinés à être plaqués contre la paroi du carter moteur 2 autour de l'ouverture 14 en lieu et place de la platine 15 de fermeture. La fixation du support 22 sur le carter moteur 2 est assurée à l'aide de moyens de fixations 47 prenant par exemple la forme de quatre vis traversant les bords de la plaque 46 et vissées sur le carter moteur 2. Cette fixation pourra être renforcée par deux goupilles dont une qui est visible est référencée 49. The mounting interface 26 of the support with the crankcase 2 clearly visible in Figures 3 and 5 is formed by a plate 46 having its edges to be pressed against the wall of the crankcase 2 around the opening 14 instead of the closure plate 15. The fixing of the support 22 on the crankcase 2 is provided by means of fasteners 47 taking for example the form of four screws passing through the edges of the plate 46 and screwed on the crankcase 2. This attachment may be reinforced by two pins, one of which is visible is referenced 49.
[0033] Une extrémité 271 du conduit 27 du support débouchant du côté de l'ouverture 14 du carter moteur 2 est formée par une déformation de la plaque 46 qui présente localement, entre ses bords plaqués contre le carter moteur 2, une forme de cuvette dont le creux est positionné en regard de l'ouverture 14. An end 271 of the conduit 27 of the support opening on the side of the opening 14 of the crankcase 2 is formed by a deformation of the plate 46 which has locally, between its edges pressed against the crankcase 2, a bowl shape whose hollow is positioned opposite the opening 14.
[0034] Par ailleurs, comme visible sur la figure 3, l'interface de fixation 25 du support avec la pompe à vide 18 comporte une paroi 48 destinée à être positionnée en vis-à-vis du corps de la pompe à vide 18. Cette paroi 48 comporte des ouvertures pour le passage de moyens de fixation 52 assurant l'assemblage entre la pompe à vide 18 et le support 22. Ces moyens de fixation 52 pourront par exemple prendre la forme de vis traversant les ouvertures de la paroi 48 et vissées dans des taraudages ménagés dans le corps de la pompe à vide 18. On note que la paroi 48 s'étend dans un plan sensiblement perpendiculaire à la plaque 46 de l'interface de fixation 26 au carter moteur 2. L'interface 25 comporte également le dispositif d'accouplement 44 entre les deux arbres 301 et 302. Furthermore, as can be seen in FIG. 3, the interface for fixing the support with the vacuum pump 18 comprises a wall 48 intended to be positioned opposite the body of the vacuum pump 18. This wall 48 has openings for the passage of fastening means 52 ensuring the connection between the vacuum pump 18 and the support 22. These fastening means 52 may for example take the form of screws passing through the openings of the wall 48 and screwed into tappings formed in the body of the vacuum pump 18. It is noted that the wall 48 extends in a plane substantially perpendicular to the plate 46 of the attachment interface 26 to the crankcase 2. The interface 25 comprises also the coupling device 44 between the two shafts 301 and 302.
[0035] Comme cela est bien visible sur les figures 3 et 4, le support 22 comporte également une paroi 54 issue d'un bord de la paroi 46 ayant des plots 55 dont les extrémités libres sont destinées à venir en regard d'ouvertures réalisées dans des oreilles 57 du dispositif 40 de mise en tension. Des moyens de fixation 60 traversant les ouvertures des oreilles 57 et des alésages internes des plots 55 assurent la fixation de l'ensemble. La paroi 54 s'étend sensiblement parallèlement à la paroi 48 de l'interface de fixation 25 avec la pompe à vide 18. As can be seen in FIGS. 3 and 4, the support 22 also comprises a wall 54 coming from an edge of the wall 46 having studs 55 whose free ends are intended to come opposite openings made. in ears 57 of the tensioning device 40. Fixing means 60 passing through the openings of the lugs 57 and internal bores of the studs 55 ensure the attachment of the assembly. The wall 54 extends substantially parallel to the wall 48 of the attachment interface 25 with the vacuum pump 18.
[0036] Le vide généré par la pompe 18 n'étant pas systématiquement utilisé lors du fonctionnement du véhicule, le module 21 comporte de préférence une réserve de vide 62, ce qui permet de réduire la taille de la pompe 18 utilisée. On augmente ainsi encore la compacité de l'ensemble. Cette réserve de vide 62 a un piquage d'entrée relié à la pompe à vide 18 et au moins un piquage de sortie relié à une ou plusieurs électrovannes par l'intermédiaire d'un tuyau référencé 63. The vacuum generated by the pump 18 is not systematically used during operation of the vehicle, the module 21 preferably comprises a vacuum reserve 62, which reduces the size of the pump 18 used. This increases the compactness of the whole. This vacuum reserve 62 has an inlet nozzle connected to the pump at vacuum 18 and at least one outlet tapping connected to one or more solenoid valves via a pipe referenced 63.
[0037] De préférence, un déflecteur 65 montré sur a figure 3 est prévu pour protéger le module 21 de pompe à vide de projections d'eau ou de cailloux notamment pouvant se produire lors du déplacement du véhicule. Afin d'assurer sa fixation, le déflecteur 65 présente un bord latéral relié à la paroi 48 de l'interface de fixation 25 avec la pompe à vide 18.  Preferably, a deflector 65 shown in FIG. 3 is provided to protect the vacuum pump module 21 from splashes of water or pebbles in particular that may occur during the movement of the vehicle. In order to secure it, the deflector 65 has a lateral edge connected to the wall 48 of the fixing interface 25 with the vacuum pump 18.
[0038] De préférence, le support 22 est réalisé en matière plastique. Toutes les formes précitées du support 22 pourront ainsi être aisément obtenues par moulage. Toutefois, d'autres types de matériaux sont bien entendu envisageables. Le choix de matériau dépendra de l'application.  Preferably, the support 22 is made of plastics material. All the aforementioned forms of the support 22 can thus be easily obtained by molding. However, other types of materials are of course conceivable. The choice of material will depend on the application.

Claims

REVENDICATIONS
1 . Module (21 ) de pompe à vide pour moteur à combustion interne (1 ), caractérisé en ce qu'il comporte :  1. Module (21) for vacuum pump for an internal combustion engine (1), characterized in that it comprises:
- une pompe à vide (18) ayant un arbre d'entraînement (30),  a vacuum pump (18) having a drive shaft (30),
- un système d'entraînement par friction (36) de l'arbre d'entraînement (30) de la pompe à vide apte à coopérer avec le dos d'une courroie de transmission (1 1 ) du moteur, et - a friction drive system (36) of the drive shaft (30) of the vacuum pump adapted to cooperate with the back of a transmission belt (1 1) of the engine, and
- un support (22) comportant une interface de fixation (25) avec la pompe à vide, une interface de fixation (26) avec un carter moteur (2), et un conduit (27) assurant une communication entre un orifice de refoulement d'air de la pompe à vide et une ouverture (14) ménagée dans le carter moteur.  a support (22) comprising an attachment interface (25) with the vacuum pump, a fixing interface (26) with a crankcase (2), and a conduit (27) providing communication between a discharge port air of the vacuum pump and an opening (14) in the crankcase.
2. Module selon la revendication 1 , caractérisé en ce que le système d'entraînement par friction (36) comporte un premier galet (31 ), dit galet d'entraînement, monté sur l'arbre d'entraînement (30), et un deuxième galet (32), dit galet de transmission, destiné à venir en appui contre le galet d'entraînement (31 ) et contre le dos de la courroie de transmission (1 1 ).  2. Module according to claim 1, characterized in that the friction drive system (36) comprises a first roller (31), said drive roller, mounted on the drive shaft (30), and a second roller (32), said transmission roller, intended to bear against the drive roller (31) and against the back of the transmission belt (1 1).
3. Module selon la revendication 2, caractérisé en ce qu'il comporte en outre un bras (39) relié d'une part au galet de transmission (32) et d'autre part à un dispositif (40) de mise en tension, ce dispositif (40) de mise en tension étant apte à appliquer, via le bras (39), un effort sur le galet de transmission (32) pour le plaquer contre le galet d'entraînement (31 ) et contre le dos de la courroie de transmission (1 1 ).  3. Module according to claim 2, characterized in that it further comprises an arm (39) connected on the one hand to the transmission roller (32) and on the other hand to a device (40) for tensioning, this tensioning device (40) being able to apply, via the arm (39), a force on the transmission roller (32) to press it against the drive roller (31) and against the back of the belt transmission (1 1).
4. Module de pompe à vide selon l'une des revendications 1 à 3, caractérisé en ce que l'interface de fixation (26) du support avec le carter moteur comporte une plaque (46) ayant des bords destinés à être plaqués contre le carter moteur autour de l'ouverture (14) ménagée dans le carter moteur et des moyens de fixation (47) au carter moteur traversant les bords de la plaque (46).  Vacuum pump module according to one of Claims 1 to 3, characterized in that the support interface (26) of the carrier with the motor housing comprises a plate (46) having edges intended to be pressed against the motor housing around the opening (14) in the crankcase and fastening means (47) to the crankcase traversing the edges of the plate (46).
5. Module de pompe à vide selon la revendication 4, caractérisé en ce que une extrémité (271 ) du conduit (27) du support débouchant du côté du carter moteur (2) est formée par une déformation de la plaque (46) qui présente localement une forme de cuvette dont le creux est destiné à venir en regard de l'ouverture (14) du carter moteur. 5. Vacuum pump module according to claim 4, characterized in that one end (271) of the conduit (27) of the support opening on the side of the crankcase (2) is formed by a deformation of the plate (46) which presents locally a bowl shape whose recess is intended to come opposite the opening (14) of the crankcase.
6. Module de pompe à vide selon l'une des revendications 1 à 5, caractérisé en ce que l'interface de fixation (25) du support avec la pompe à vide (18) comporte une paroi (48) destinée à être positionnée en vis-à-vis d'un corps de la pompe à vide (18), cette paroi comportant des ouvertures pour le passage de moyens de fixation (52) assurant l'assemblage entre la pompe à vide (18) et le support (22). 6. Vacuum pump module according to one of claims 1 to 5, characterized in that the interface (25) for fixing the support with the vacuum pump (18) comprises a wall (48) intended to be positioned vis-à-vis a body of the vacuum pump (18), this wall having openings for the passage of fastening means (52) ensuring the connection between the vacuum pump (18) and the support (22).
7. Module selon l'une des revendications 1 à 6, caractérisé en ce que l'arbre d'entraînement (30) étant formé par un premier arbre (301 ) appartenant à la pompe à vide (18) et un deuxième arbre (302) sur lequel est monté le galet d'entraînement (31 ), l'interface de fixation (25) du support avec la pompe à vide (18) comporte un dispositif d'accouplement (44) entre les deux arbres (301 , 302).  7. Module according to one of claims 1 to 6, characterized in that the drive shaft (30) being formed by a first shaft (301) belonging to the vacuum pump (18) and a second shaft (302). ) on which the drive roller (31) is mounted, the interface (25) for attaching the support with the vacuum pump (18) has a coupling device (44) between the two shafts (301, 302) .
8. Module de pompe à vide selon l'une des revendications 1 à 7, caractérisé en ce qu'il comporte en outre une réserve de vide (62) ayant un piquage d'entrée relié à la pompe à vide et au moins un piquage de sortie relié à une ou plusieurs électrovannes.  8. Vacuum pump module according to one of claims 1 to 7, characterized in that it further comprises a vacuum reserve (62) having an inlet nozzle connected to the vacuum pump and at least one quilting output connected to one or more solenoid valves.
9. Module de pompe à vide l'une des revendications 1 à 8, caractérisé en ce qu'il comporte en outre un déflecteur (65) assurant sa protection.  9. Vacuum pump module of one of claims 1 to 8, characterized in that it further comprises a deflector (65) providing protection.
10. Moteur (1 ) à combustion interne caractérisé en ce qu'il comporte un carter moteur (2) ayant une ouverture (14) ménagée dans une de ses parois latérales sur laquelle est susceptible d'être fixé le module (21 ) de pompe à vide selon l'une des revendications précédentes par l'intermédiaire de son support (22).  10. Internal combustion engine (1) characterized in that it comprises a crankcase (2) having an opening (14) formed in one of its side walls on which the pump module (21) can be fixed. vacuum according to one of the preceding claims through its support (22).
PCT/FR2013/052646 2012-11-12 2013-11-06 Adaptable and compact vacuum pump module for internal combustion engine and corresponding internal combustion engine WO2014072637A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1260700A FR2998002B1 (en) 2012-11-12 2012-11-12 COMPACT AND ADAPTABLE VACUUM PUMP MODULE FOR INTERNAL COMBUSTION ENGINE AND CORRESPONDING INTERNAL COMBUSTION ENGINE
FR1260700 2012-11-12

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WO2014072637A1 true WO2014072637A1 (en) 2014-05-15

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PCT/FR2013/052646 WO2014072637A1 (en) 2012-11-12 2013-11-06 Adaptable and compact vacuum pump module for internal combustion engine and corresponding internal combustion engine

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FR (1) FR2998002B1 (en)
WO (1) WO2014072637A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059086A1 (en) * 1981-02-19 1982-09-01 Wabco Automotive U.K. Limited Ancillary rotary equipment for engines
JPS5987283A (en) * 1982-11-12 1984-05-19 Toyota Motor Corp Driving method of vacuum pump
KR20090062023A (en) * 2007-12-12 2009-06-17 지엠대우오토앤테크놀로지주식회사 Belt alternator startor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059086A1 (en) * 1981-02-19 1982-09-01 Wabco Automotive U.K. Limited Ancillary rotary equipment for engines
JPS5987283A (en) * 1982-11-12 1984-05-19 Toyota Motor Corp Driving method of vacuum pump
KR20090062023A (en) * 2007-12-12 2009-06-17 지엠대우오토앤테크놀로지주식회사 Belt alternator startor

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FR2998002B1 (en) 2014-11-21
FR2998002A1 (en) 2014-05-16

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