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EP1609965B1 - Mounting-assembly of an auxiliary member and housing for driving at least an auxiliary member - Google Patents

Mounting-assembly of an auxiliary member and housing for driving at least an auxiliary member Download PDF

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Publication number
EP1609965B1
EP1609965B1 EP05291185A EP05291185A EP1609965B1 EP 1609965 B1 EP1609965 B1 EP 1609965B1 EP 05291185 A EP05291185 A EP 05291185A EP 05291185 A EP05291185 A EP 05291185A EP 1609965 B1 EP1609965 B1 EP 1609965B1
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EP
European Patent Office
Prior art keywords
auxiliary member
crankshaft
assembly
engine
housing
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.)
Not-in-force
Application number
EP05291185A
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German (de)
French (fr)
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EP1609965A1 (en
Inventor
David Tisserand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Publication date
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Publication of EP1609965A1 publication Critical patent/EP1609965A1/en
Application granted granted Critical
Publication of EP1609965B1 publication Critical patent/EP1609965B1/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

Definitions

  • the invention relates to an arrangement, with rotational drive connection, of an auxiliary member on an internal combustion engine, and a drive housing for rotating at least one auxiliary member.
  • auxiliary components such as the starter, the generator, the steering assistance pump, the water pump of the cooling circuit and many other components, which are necessary for the operation of a combustion engine. or intended for particular uses of the vehicle driven by the internal combustion engine, are mounted at different locations on the internal combustion engine. Very often, these auxiliary members are driven by a belt passing through a pulley mounted in rotation on the motor for this purpose. Such an arrangement is disadvantageous in two respects.
  • each auxiliary member requests its own fastening means on the engine
  • the use of a belt provides an elongation of the engine in the axial direction of the crankshaft of the engine, as well as the presence of a rotating and generally uncovered part (a pulley) outside the engine block.
  • Such provisions give the assembly formed by the engine and its auxiliary organs a large enough volume, especially when taking into account the empty volume necessary to ensure minimum distances of safety around the rotating parts or to allow maintenance work for example the replacement of the belt. And this is especially true when it comes to rotating two or three auxiliary bodies.
  • Such an arrangement can also be particularly disadvantageous when the assembly formed by the engine and its auxiliary members is intended for be mounted in a truck under the driver's seat or behind the driver's seat back.
  • the object of the invention is to propose an arrangement of an internal combustion engine and one or more auxiliary members making it possible to reduce as much as possible the space required for the engine and its auxiliary members, and which, preferably, also simplifies mounting these auxiliary bodies on the engine.
  • the object of the invention is achieved with an arrangement, with rotationally driving connection, of an auxiliary member on an internal combustion engine comprising a bearing housing and a crankshaft with counterweights housed in the bearing housing, according to which the auxiliary member is provided with a drive pinion in rotation and is drivably connected to the motor by a cascade of gears comprising at least one intermediate gear and a ring, the ring being crimped on one of the counterweight of the crankshaft; and with a drive housing including the features of claim 8.
  • the length of the engine seen in the axial direction of the crankshaft of the engine, is no longer elongated by an additional volume necessary for the location of one or more belts and the corresponding pulleys required for training auxiliary organs.
  • the provisions of the invention make it possible to mount one or more auxiliary members on a drive box and to mount this drive box on the internal combustion engine, which considerably simplifies the mounting of the auxiliary members on the motor. .
  • the present invention thus makes it possible to obtain a fairly substantial reduction both in terms of equipment and in terms of volume and manufacturing costs, of an engine equipped with auxiliary members.
  • the figure 1 recalls a usual arrangement of an internal combustion engine 10 equipped with an auxiliary member 2, for example a generator.
  • the generator 2 is driven by means of a belt 19 passing through a pulley 20 mounted on one end of a crankshaft 11 ( figure 3 ) of the motor 10.
  • the arrangement according to the invention represented on the figure 2 , allows to obtain, compared to the usual arrangement represented on the figure 1 , gains in engine length of the order of 30 to 40 mm, or 50 mm.
  • the motor 10 comprises a lateral drive unit 1 containing part of a cascade of gears.
  • the drive housing 1, which forms a support for the auxiliary member 2 is mounted laterally on a bearing housing 3, and this so that the axis of rotation of the auxiliary member 2 is parallel to the axis crankshaft rotation 11.
  • the drive housing 1 is mounted directly on the bearing housing 3, by means of a flange 22 integral with the housing 1 and bearing on a flange 16 shaped for this purpose in the housing 3.
  • the crankshaft 11 In the housing 3 is housed the crankshaft 11 with its counterweight 4. One of the counterweight 4 of the crankshaft 11 is crimped with a ring 6 giving the counterweight 4 the additional function of a toothed wheel.
  • the housing 1 is disposed on the housing 3 in such a way that a drive pinion 21 ( figure 5 ) of the auxiliary member 2 is at least approximately aligned with the ring gear 6.
  • the drive pinion 21, one or more intermediate gears 5 ( figure 4 ) and the ring gear 6 together form a transmission kinematic chain for driving the auxiliary member 2 by a counterweight 4 of the crankshaft 11 of the engine 10.
  • this transmission chain for example the number of teeth of each of these elements, are determined mainly according to the nature or type of auxiliary member to rotate.
  • the auxiliary member 2 is a starter, it is a question of developing a fairly large torque.
  • the total ratio between the number of revolutions of the crankshaft 11 and the gear 21 must be quite high, for example, of the order of 20 to 25.
  • the total ratio between these two speeds of rotation is determined by the produced from all the singular relations of the gables and the intervening crown.
  • there are four elements involved namely the ring gear 6, three intermediate gears 51, 52, 53 and the drive pinion 21 of the auxiliary member 2. These five elements form four gears. gear which, when multiplied with each other, give the total ratio between the speed of rotation of the pinion 21, therefore the auxiliary member 2, and the speed of rotation of the ring 6, therefore the crankshaft 11.
  • the auxiliary member 2 When, on the other hand, the auxiliary member 2 is a generator, the member 2 must be able to function correctly up to the maximum speed of the motor 10 and at the same time supply the necessary current from a comparatively slow rotation speed. 10.
  • the total transmission ratio of the cascade of gears will be that, for example, of the order of 3 to 6.
  • transmission ratios can be calculated as a function of the speed of rotation or the torque required, for example, when the auxiliary member 2 is a pump for the fluid of an assistance system. direction.
  • the arrangement according to the invention can operate with a single intermediate gear 5.
  • the ring gear 6 engages with this intermediate gear 5 which engages with the pinion 21 of the auxiliary member 2.
  • the transmission ratio required for a certain application can only be obtained with a relatively high number of teeth of the intermediate gear 5.
  • the pinion 5 will have a large enough diameter, which may have the consequence that the flange 16, and more particularly the passage in the flange 16 through which the intermediate gear 5 engages with the ring 6, must be big enough This condition can be achieved quite easily when it comes to developing an entirely new engine in which the dimensions of the bearing housing 3 will be determined according to the necessary dimensions of the flange 16.
  • an existing motor is to be modified so that the arrangement according to the invention can be achieved, the modification must take into account the dimensions of the bearing housing bearing 3, which generally leads to a flange 16 of dimensions, including opening, limited.
  • a cascade will be chosen comprising three intermediate gears 51, 52, 53 as shown in FIG. figure 4 .
  • the number of intermediate gears 5 is greater than three.
  • the use of four or more intermediate gears will be limited to general to particular applications.
  • the first auxiliary member is a reversible machine that can also function Well as a generator as a starter
  • the second auxiliary member is a pump for the vehicle steering assistance system
  • a third member is a pump for the air conditioning system of the vehicle.
  • a still different arrangement will be chosen when it comes to output a drive shaft from the drive housing 1, drive shaft which will be used, for example on an agricultural tractor, for driving various interchangeable tools according to the work to be done with this tractor.
  • the figure 5 represents a configuration according to which the sprocket cascade comprises, apart from the ring gear 6, two intermediate gears 51, 52 fixed inside the drive box 1 by means of screw-pins 71, 72.
  • the housing 1 comprises a support 23 arranged transversely with respect to the flange 22 and shaped so as to extend as far as the inside of the bearing cap housing 3.
  • the support 23 has a housing 14 for the intermediate gear 51. It also comprises, in the side wall of the housing 1, a housing 15 for the intermediate gear 52.
  • the axle screws 71, 72 respectively pass through the intermediate gear 51 and the intermediate gear 52 to be introduced and housed in the corresponding housing 14 or 15 .
  • the figure 7 represents this type of assembly in a schematic cross section for the case of a single intermediate gear 5.
  • the screw-axis 7 is immobilized in the side wall of the housing 1 by means of a nut 7A.
  • the head of the screw-axis 7 is provided with a hexagonal hollow 7B intended to receive, when mounting the pinion 5, a hexagonal key C.
  • the figure 8 shows, finally, a bearing housing 3 having the modification necessary for the arrangement according to the invention.
  • a flange 16 on which the drive housing 1 is fixed by means of screws 19 through the through holes 13 of the drive housing 1.
  • the flange 16 comprises four threads 17 in the middle, the flange 16 comprises an opening 18 whose shape and dimensions are chosen so as to allow a engrainement between the crown 6 and the intermediate gear partially housed inside the opening 18 of the flange 16.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Details Of Gearings (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Cartons (AREA)
  • Auxiliary Devices For Music (AREA)
  • Table Devices Or Equipment (AREA)
  • Gear Transmission (AREA)
  • Arrangement Of Transmissions (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

The arrangement has an auxiliary unit (2) such as starter, generator, power steering pump, or water pump of a cooling circuit with a drive pinion. The unit is connected to an internal combustion engine against a cascade of an intermediate pinion and a ring gear (6) crimped on one of counterweights (4) of a crankshaft (11). The auxiliary unit and the intermediate pinions are maintained by a drive case (1).

Description

L'invention concerne un agencement, avec liaison par entraînement en rotation, d'un organe auxiliaire sur un moteur à combustion interne, ainsi qu'un boîtier d'entraînement pour la mise en rotation d'au moins un organe auxiliaire.The invention relates to an arrangement, with rotational drive connection, of an auxiliary member on an internal combustion engine, and a drive housing for rotating at least one auxiliary member.

De manière générale, les organes auxiliaires, tels que le démarreur, le générateur, la pompe d'assistance de direction, la pompe à eau du circuit de refroidissement et bien d'autres organes, qui sont nécessaires pour le fonctionnement d'un moteur à combustion ou qui sont prévus pour des utilisations particulières du véhicule entraîné par le moteur à combustion interne, sont montés à différents endroits sur la machine à combustion interne. Très souvent, ces organes auxiliaires sont entraînés par une courroie passant par une poulie montée en rotation sur le moteur à cet effet. Un tel agencement est désavantageux selon deux aspects. Selon un premier aspect, chaque organe auxiliaire demande ses propres moyens de fixation sur le moteur, et selon un second aspect, l'utilisation d'une courroie apporte un allongement du moteur dans le sens axial du vilebrequin du moteur, ainsi que la présence d'une pièce tournante et généralement non couverte (une poulie) à l'extérieur du bloc moteur.In general, the auxiliary components, such as the starter, the generator, the steering assistance pump, the water pump of the cooling circuit and many other components, which are necessary for the operation of a combustion engine. or intended for particular uses of the vehicle driven by the internal combustion engine, are mounted at different locations on the internal combustion engine. Very often, these auxiliary members are driven by a belt passing through a pulley mounted in rotation on the motor for this purpose. Such an arrangement is disadvantageous in two respects. According to a first aspect, each auxiliary member requests its own fastening means on the engine, and according to a second aspect, the use of a belt provides an elongation of the engine in the axial direction of the crankshaft of the engine, as well as the presence of a rotating and generally uncovered part (a pulley) outside the engine block.

Un dispositif selon les préambules des revendications 1 et 8 est connu du document US 4 334 508 .A device according to the preambles of claims 1 and 8 is known from the document US 4,334,508 .

De telles dispositions donnent à l'ensemble formé par le moteur et ses organes auxiliaires un volume assez important, notamment lorsque l'on tient compte du volume vide nécessaire pour assurer des distances minimales de sécurité autour les pièces tournantes ou pour permettre des travaux de maintenance, par exemple le remplacement de la courroie. Et ceci est particulièrement vrai, lorsqu'il s'agit d'entraîner en rotation deux ou trois organes auxiliaires.Such provisions give the assembly formed by the engine and its auxiliary organs a large enough volume, especially when taking into account the empty volume necessary to ensure minimum distances of safety around the rotating parts or to allow maintenance work for example the replacement of the belt. And this is especially true when it comes to rotating two or three auxiliary bodies.

Une telle disposition peut s'avérer par ailleurs particulièrement désavantageuse lorsque l'ensemble formé par le moteur et ses organes auxiliaires est destiné à être monté dans un camion en dessous du siège du conducteur ou derrière le dossier du siège du conducteur.Such an arrangement can also be particularly disadvantageous when the assembly formed by the engine and its auxiliary members is intended for be mounted in a truck under the driver's seat or behind the driver's seat back.

Le but de l'invention est de proposer un agencement d'un moteur à combustion interne et un ou plusieurs organes auxiliaires permettant de réduire le plus possible l'espace nécessaire pour le moteur et ses organes auxiliaires, et qui, de préférence, simplifie aussi le montage de ces organes auxiliaires sur le moteur.The object of the invention is to propose an arrangement of an internal combustion engine and one or more auxiliary members making it possible to reduce as much as possible the space required for the engine and its auxiliary members, and which, preferably, also simplifies mounting these auxiliary bodies on the engine.

Le but de l'invention est atteint avec un agencement, avec liaison par entraînement en rotation, d'un organe auxiliaire sur un moteur à combustion interne comprenant un carter chapeau palier et un vilebrequin avec des contrepoids logés dans le carter chapeau palier, selon lequel l'organe auxiliaire est pourvu d'un pignon d'entraînement en rotation et est relié en entraînement au moteur moyennant une cascade de pignons comprenant au moins un pignon intermédiaire et une couronne, la couronne étant sertie sur l'un des contrepoids du vilebrequin; et avec un boîtier d'entraînement comprenant les caractéristiques selon la revendication 8.The object of the invention is achieved with an arrangement, with rotationally driving connection, of an auxiliary member on an internal combustion engine comprising a bearing housing and a crankshaft with counterweights housed in the bearing housing, according to which the auxiliary member is provided with a drive pinion in rotation and is drivably connected to the motor by a cascade of gears comprising at least one intermediate gear and a ring, the ring being crimped on one of the counterweight of the crankshaft; and with a drive housing including the features of claim 8.

Grâce à cette disposition de l'invention, la longueur du moteur, vue dans le sens axial du vilebrequin du moteur, n'est plus allongée par un volume supplémentaire nécessaire pour l'emplacement d'une ou de plusieurs courroies et des poulies correspondantes nécessaires pour l'entraînement des organes auxiliaires. Au contraire, le fait de se servir d'un des contrepoids du vilebrequin et notamment en sertissant sur celui-ci une couronne faisant office de pignon d'entraînement, permet d'éviter la présence d'une pièce ouvertement tournante pour l'entraînement en rotation des organes auxiliaires.With this arrangement of the invention, the length of the engine, seen in the axial direction of the crankshaft of the engine, is no longer elongated by an additional volume necessary for the location of one or more belts and the corresponding pulleys required for training auxiliary organs. On the contrary, the fact of using one of the crankshaft counterweights and in particular by crimping a drive gear crown thereon, makes it possible to avoid the presence of an openly rotating part for driving the crankshaft. rotation of auxiliary organs.

De plus, un tel agencement apporte un gain en travaux d'entretien, puisqu'il n'y a pas de vérification de l'état de la courroie et des poulies ni de réglage de la tension de la courroie ou des courroies à prévoir. Au contraire, toute la chaîne d'entraînement formée par la couronne, le ou les pignons intermédiaires et le pignon d'entraînement de chacun des organes auxiliaires, est lubrifiée en même temps et par la même huile que le vilebrequin et les autres parties du moteur à combustion interne.In addition, such an arrangement provides a gain in maintenance work, since there is no verification of the condition of the belt and pulleys or adjusting the tension of the belt or belts to predict. On the contrary, the entire training chain formed by the crown, the intermediate pinion (s) and the drive pinion of each of the auxiliary members, is lubricated at the same time and by the same oil as the crankshaft and the other parts of the internal combustion engine.

Par ailleurs, les dispositions de l'invention permettent de monter un ou plusieurs organes auxiliaires sur un boîtier d'entraînement et de monter ce boîtier d'entraînement sur le moteur à combustion interne, ce qui simplifie notablement le montage des organes auxiliaires sur le moteur.Moreover, the provisions of the invention make it possible to mount one or more auxiliary members on a drive box and to mount this drive box on the internal combustion engine, which considerably simplifies the mounting of the auxiliary members on the motor. .

La présente invention permet donc d'obtenir une réduction assez importante aussi bien sur le plan matériel que sur le plan du volume et des frais de fabrication, d'un moteur équipé d'organes auxiliaires.The present invention thus makes it possible to obtain a fairly substantial reduction both in terms of equipment and in terms of volume and manufacturing costs, of an engine equipped with auxiliary members.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description ci-après d'un mode de réalisation de l'invention représenté sur les dessins. Dans ces dessins :

  • la figure 1 représente un agencement d'un organe auxiliaire sur un moteur à combustion interne sans recourir à la présente invention ;
  • la figure 2 représente un agencement selon l'invention d'un organe auxiliaire sur un moteur à combustion interne ;
  • la figure 3 représente la disposition selon l'invention d'un vilebrequin du moteur à combustion interne et d'un organe auxiliaire par rapport au vilebrequin ;
  • la figure 4 représente un boîtier d'entraînement et une cascade de pignons selon l'invention ;
  • la figure 5 représente la disposition des pignons intermédiaires dans le boîtier d'entraînement selon l'invention ;
  • la figure 6 représente un boîtier d'entraînement pour la réalisation de l'agencement selon l'invention ;
  • la figure 7 montre très schématiquement le montage d'un pignon intermédiaire sur le boîtier d'entraînement selon l'invention, et
  • la figure 8 montre le carter chapeau palier d'un moteur à combustion interne avec la modification nécessaire pour un agencement selon l'invention.
Other features and advantages of the present invention will become apparent from the following description of an embodiment of the invention shown in the drawings. In these drawings:
  • the figure 1 represents an arrangement of an auxiliary member on an internal combustion engine without resorting to the present invention;
  • the figure 2 represents an arrangement according to the invention of an auxiliary member on an internal combustion engine;
  • the figure 3 represents the arrangement according to the invention of a crankshaft of the internal combustion engine and of an auxiliary member relative to the crankshaft;
  • the figure 4 represents a drive box and a cascade of gears according to the invention;
  • the figure 5 represents the arrangement of the intermediate gears in the drive housing according to the invention;
  • the figure 6 represents a drive unit for carrying out the arrangement according to the invention;
  • the figure 7 shows very schematically the mounting of an intermediate gear on the drive housing according to the invention, and
  • the figure 8 shows the bearing housing of an internal combustion engine with the modification necessary for an arrangement according to the invention.

La figure 1 rappelle un agencement habituel d'un moteur à combustion interne 10 équipé d'un organe auxiliaire 2, par exemple un générateur. Le générateur 2 est entraîné moyennant une courroie 19 passant par une poulie 20 montée sur une extrémité d'un vilebrequin 11 (figure 3) du moteur 10.The figure 1 recalls a usual arrangement of an internal combustion engine 10 equipped with an auxiliary member 2, for example a generator. The generator 2 is driven by means of a belt 19 passing through a pulley 20 mounted on one end of a crankshaft 11 ( figure 3 ) of the motor 10.

La largeur de la poulie 20, y compris les dimensions de l'axe de la poulie 20 et celles des moyens de fixation de la poulie 20 sur son axe de rotation, donnent au groupe motopropulseur, c'est-à-dire à l'ensemble formé par le moteur et les moyens d'entraînement de l'organe auxiliaire, une longueur supplémentaire non négligeable. Dans certains cas, cette longueur supplémentaire rend l'intégration du groupe motopropulseur dans un châssis donné ou dans une plate-forme donnée particulièrement difficile, par exemple lorsque le moteur a six ou huit cylindres et est destiné à la motorisation d'une voiture de tourisme.The width of the pulley 20, including the dimensions of the axis of the pulley 20 and those of the fixing means of the pulley 20 on its axis of rotation, give to the powertrain, that is to say to the together formed by the motor and the drive means of the auxiliary member, a significant additional length. In some cases, this additional length makes the integration of the powertrain in a given chassis or in a given platform particularly difficult, for example when the engine has six or eight cylinders and is intended for the motorization of a passenger car. .

L'agencement selon l'invention, représenté sur la figure 2, permet d'obtenir, par rapport à l'agencement habituel représenté sur la figure 1, des gains en longueur de moteur de l'ordre de 30 à 40 mm, voire 50 mm.The arrangement according to the invention, represented on the figure 2 , allows to obtain, compared to the usual arrangement represented on the figure 1 , gains in engine length of the order of 30 to 40 mm, or 50 mm.

En effet, le moteur 10 comprend un boîtier d'entraînement latéral 1 contenant une partie d'une cascade de pignons. Le boîtier d'entraînement 1, qui forme un support pour l'organe auxiliaire 2, est monté latéralement sur un carter chapeau palier 3, et cela de manière que l'axe de rotation de l'organe auxiliaire 2 soit parallèle à l'axe de rotation du vilebrequin 11.Indeed, the motor 10 comprises a lateral drive unit 1 containing part of a cascade of gears. The drive housing 1, which forms a support for the auxiliary member 2, is mounted laterally on a bearing housing 3, and this so that the axis of rotation of the auxiliary member 2 is parallel to the axis crankshaft rotation 11.

Comme on le voit en d'avantage de détails sur la figure 3, le boîtier d'entraînement 1 est monté directement sur le carter chapeau palier 3, moyennant une bride 22 solidaire du boîtier 1 et venant en appui sur une bride 16 conformée à cet effet dans le carter 3.As can be seen in more details on the figure 3 , the drive housing 1 is mounted directly on the bearing housing 3, by means of a flange 22 integral with the housing 1 and bearing on a flange 16 shaped for this purpose in the housing 3.

Dans le carter 3 est logé le vilebrequin 11 avec ses contrepoids 4. Un des contrepoids 4 du vilebrequin 11 est sertie avec une couronne 6 donnant à ce contrepoids 4 la fonction supplémentaire d'une roue dentée. Le boîtier 1 est disposé sur le carter 3 de manière telle qu'un pignon d'entraînement 21 (figure 5) de l'organe auxiliaire 2 soit au moins approximativement aligné sur la couronne 6. Ainsi, le pignon d'entraînement 21, un ou plusieurs pignons intermédiaires 5 (figure 4) et la couronne 6 forment ensemble une chaîne cinématique de transmission permettant d'entraîner l'organe auxiliaire 2 par un contrepoids 4 du vilebrequin 11 du moteur 10.In the housing 3 is housed the crankshaft 11 with its counterweight 4. One of the counterweight 4 of the crankshaft 11 is crimped with a ring 6 giving the counterweight 4 the additional function of a toothed wheel. The housing 1 is disposed on the housing 3 in such a way that a drive pinion 21 ( figure 5 ) of the auxiliary member 2 is at least approximately aligned with the ring gear 6. Thus, the drive pinion 21, one or more intermediate gears 5 ( figure 4 ) and the ring gear 6 together form a transmission kinematic chain for driving the auxiliary member 2 by a counterweight 4 of the crankshaft 11 of the engine 10.

Les détails de conception de cette chaîne de transmission, par exemple le nombre de dents de chacun de ces éléments, sont déterminés principalement en fonction de la nature ou du type d'organe auxiliaire à entraîner en rotation.The design details of this transmission chain, for example the number of teeth of each of these elements, are determined mainly according to the nature or type of auxiliary member to rotate.

En effet, lorsque l'organe auxiliaire 2 est un démarreur, il s'agit de développer un couple assez important. Dans ce cas, le rapport total entre le nombre de tours du vilebrequin 11 et celui du pignon 21 doit être assez élevé, par exemple, de l'ordre de 20 à 25. Le rapport total entre ces deux vitesses de rotation est déterminé par le produit de tous les rapports singuliers des pignons et de la couronne intervenant. Dans la configuration représentée dans les dessins, il y a quatre éléments intervenant, à savoir la couronne 6, trois pignons intermédiaires 51, 52, 53 et le pignon d'entraînement 21 de l'organe auxiliaire 2. Ces cinq éléments forment quatre rapports d'engrenage qui, lorsque l'on les multiplie les uns avec les autres, donnent le rapport total entre la vitesse de rotation du pignon 21, donc de l'organe auxiliaire 2, et la vitesse de rotation de la couronne 6, donc du vilebrequin 11.Indeed, when the auxiliary member 2 is a starter, it is a question of developing a fairly large torque. In this case, the total ratio between the number of revolutions of the crankshaft 11 and the gear 21 must be quite high, for example, of the order of 20 to 25. The total ratio between these two speeds of rotation is determined by the produced from all the singular relations of the gables and the intervening crown. In the configuration shown in the drawings, there are four elements involved, namely the ring gear 6, three intermediate gears 51, 52, 53 and the drive pinion 21 of the auxiliary member 2. These five elements form four gears. gear which, when multiplied with each other, give the total ratio between the speed of rotation of the pinion 21, therefore the auxiliary member 2, and the speed of rotation of the ring 6, therefore the crankshaft 11.

Lorsque, par contre, l'organe auxiliaire 2 est un générateur, l'organe 2 doit être capable de fonctionner correctement jusqu'à la vitesse maximale du moteur 10 et fournir en même temps le courant nécessaire à partir d'une vitesse de rotation comparativement faible du moteur 10. Pour ce cas, le rapport total de transmission de la cascade de pignons ne sera que, par exemple, de l'ordre de 3 à 6.When, on the other hand, the auxiliary member 2 is a generator, the member 2 must be able to function correctly up to the maximum speed of the motor 10 and at the same time supply the necessary current from a comparatively slow rotation speed. 10. For this case, the total transmission ratio of the cascade of gears will be that, for example, of the order of 3 to 6.

Pour d'autres fonctions, d'autres rapports de transmission peuvent être calculés en fonction de la vitesse de rotation ou du couple nécessaire, par exemple, lorsque l'organe auxiliaire 2 est une pompe pour le fluide d'un système d'assistance de direction.For other functions, other transmission ratios can be calculated as a function of the speed of rotation or the torque required, for example, when the auxiliary member 2 is a pump for the fluid of an assistance system. direction.

En ce qui concerne le nombre de pignons intermédiaires dans la cascade de pignons pour l'agencement selon l'invention, celui-ci peut être déterminé selon deux aspects différents. Selon le premier aspect, l'agencement selon l'invention peut fonctionner avec un seul pignon intermédiaire 5. En ce cas, la couronne 6 engraine avec ce pignon intermédiaire 5 qui, lui, engraine avec le pignon 21 de l'organe auxiliaire 2. Cependant, il peut s'avérer que le rapport de transmission nécessaire pour une certaine application ne peut être obtenu qu'avec un nombre de dents du pignon intermédiaire 5 assez élevé. En raison du grand nombre de dents, le pignon 5 aura un diamètre assez grand, ce qui peut avoir pour conséquence que la bride 16, et plus particulièrement le passage dans la bride 16 à travers laquelle le pignon intermédiaire 5 engraine avec la couronne 6, doit être assez grand. Cette condition peut être réalisée assez facilement lorsqu'il s'agit de développer un moteur 10 entièrement nouveau dans lequel les dimensions du carter chapeau palier 3 seront déterminées selon les dimensions nécessaires de la bride 16.With regard to the number of intermediate gears in the cascade of gears for the arrangement according to the invention, this can be determined according to two different aspects. According to the first aspect, the arrangement according to the invention can operate with a single intermediate gear 5. In this case, the ring gear 6 engages with this intermediate gear 5 which engages with the pinion 21 of the auxiliary member 2. However, it may be that the transmission ratio required for a certain application can only be obtained with a relatively high number of teeth of the intermediate gear 5. Because of the large number of teeth, the pinion 5 will have a large enough diameter, which may have the consequence that the flange 16, and more particularly the passage in the flange 16 through which the intermediate gear 5 engages with the ring 6, must be big enough This condition can be achieved quite easily when it comes to developing an entirely new engine in which the dimensions of the bearing housing 3 will be determined according to the necessary dimensions of the flange 16.

Si par contre, selon un second aspect, un moteur existant doit être modifié de manière que l'agencement selon l'invention puisse être réalisé, la modification doit tenir compte des dimensions du carter chapeau palier 3, ce qui conduit en général à une bride 16 de dimensions, et notamment d'ouverture, limitées. Dans ce cas, on choisira une cascade comprenant trois pignons intermédiaires 51, 52, 53 comme représentés sur la figure 4.If, on the other hand, according to a second aspect, an existing motor is to be modified so that the arrangement according to the invention can be achieved, the modification must take into account the dimensions of the bearing housing bearing 3, which generally leads to a flange 16 of dimensions, including opening, limited. In this case, a cascade will be chosen comprising three intermediate gears 51, 52, 53 as shown in FIG. figure 4 .

Sans sortir du principe de la présente invention, il est également concevable que le nombre de pignons intermédiaires 5 soit supérieur à trois. Toutefois, pour limiter les dimensions totales du boîtier d'entraînement 1 et afin de pouvoir disposer aisément les pignons intermédiaires 5 et le pignon d'entraînement 21 de l'organe auxiliaire 2, l'utilisation de quatre ou plus de pignons intermédiaires se limitera en général à des applications particulières.Without departing from the principle of the present invention, it is also conceivable that the number of intermediate gears 5 is greater than three. However, to limit the overall dimensions of the drive housing 1 and in order to be able to easily dispose the intermediate gears 5 and the drive pinion 21 of the auxiliary member 2, the use of four or more intermediate gears will be limited to general to particular applications.

Une telle application particulière est, par exemple, celle où l'agencement selon l'invention est choisi de manière à pouvoir entraîner en rotation simultanément deux ou encore d'avantage d'organes auxiliaires : Le premier organe auxiliaire est une machine réversible pouvant fonctionner aussi bien comme générateur que comme démarreur, le deuxième organe auxiliaire est une pompe pour le système d'assistance de direction du véhicule et un troisième organe est une pompe pour le système de climatisation du véhicule.Such a particular application is, for example, that in which the arrangement according to the invention is chosen so as to be able to drive simultaneously two or more auxiliary members simultaneously: The first auxiliary member is a reversible machine that can also function Well as a generator as a starter, the second auxiliary member is a pump for the vehicle steering assistance system and a third member is a pump for the air conditioning system of the vehicle.

Un agencement encore différent sera choisi lorsqu'il s'agit de sortir un axe d'entraînement du boîtier d'entraînement 1, axe d'entraînement qui servira, par exemple sur un tracteur agricole, pour l'entraînement de divers outils interchangeables selon les travaux à effectuer avec ce tracteur.A still different arrangement will be chosen when it comes to output a drive shaft from the drive housing 1, drive shaft which will be used, for example on an agricultural tractor, for driving various interchangeable tools according to the work to be done with this tractor.

Quelque soit l'agencement particulier dans une application donnée, il est prévu pour tous les cas, selon l'invention, de fixer le ou les pignons intermédiaires directement sur une paroi latérale du boîtier 1 moyennant des vis-axes 7. Ainsi, la figure 5 représente une configuration selon laquelle la cascade de pignons comprend, en dehors de la couronne 6, deux pignons intermédiaires 51, 52 fixés à l'intérieur du boîtier d'entraînement 1 moyennant des vis-axes 71, 72.Whatever the particular arrangement in a given application, it is provided for all cases, according to the invention, to fix the intermediate pinion or gears directly on a side wall of the housing 1 by means of screw-pins 7. Thus, the figure 5 represents a configuration according to which the sprocket cascade comprises, apart from the ring gear 6, two intermediate gears 51, 52 fixed inside the drive box 1 by means of screw-pins 71, 72.

Comme cela est représenté sur la figure 6, et en partie sur la figure 3, le boîtier 1 comprend un support 23 disposé transversalement par rapport à la bride 22 et conformé de manière à s'étendre jusqu'à l'intérieur du carter chapeau palier 3. Le support 23 comporte un logement 14 pour le pignon intermédiaire 51. Il comprend également, dans la paroi latérale du boîtier 1, un logement 15 pour le pignon intermédiaire 52. Les vis-axes 71, 72 traversent respectivement le pignon intermédiaire 51 et le pignon intermédiaire 52 pour être introduites et logées dans le logement correspondant 14 ou 15.As shown on the figure 6 , and partly on the figure 3 , the housing 1 comprises a support 23 arranged transversely with respect to the flange 22 and shaped so as to extend as far as the inside of the bearing cap housing 3. The support 23 has a housing 14 for the intermediate gear 51. It also comprises, in the side wall of the housing 1, a housing 15 for the intermediate gear 52. The axle screws 71, 72 respectively pass through the intermediate gear 51 and the intermediate gear 52 to be introduced and housed in the corresponding housing 14 or 15 .

La figure 7 représente ce type de montage en une coupe transversale schématique pour le cas d'un pignon intermédiaire unique 5. Selon cette disposition de l'invention, la vis-axe 7 est immobilisée dans la paroi latérale du boîtier 1 moyennant un écrou 7A. La tête de la vis-axe 7 est pourvue d'un creux à six pans 7B destiné à recevoir, lors du montage du pignon 5, une clé à six pans C.The figure 7 represents this type of assembly in a schematic cross section for the case of a single intermediate gear 5. According to this embodiment of the invention, the screw-axis 7 is immobilized in the side wall of the housing 1 by means of a nut 7A. The head of the screw-axis 7 is provided with a hexagonal hollow 7B intended to receive, when mounting the pinion 5, a hexagonal key C.

Cette même disposition peut aussi être employé, bien entendu, pour chacun des pignons intermédiaires lorsque plusieurs de ces pignons sont montés dans le boîtier d'entraînement 1.This same arrangement can also be used, of course, for each of the intermediate gears when several of these gears are mounted in the drive housing 1.

La figure 8 montre, enfin, un carter chapeau palier 3 comportant la modification nécessaire pour l'agencement selon l'invention. En effet, sur le côté du carter chapeau palier 3, est conformée une bride 16 sur laquelle le boîtier d'entraînement 1 est fixé moyennant des vis 19 traversant les trous de passage 13 du boîtier d'entraînement 1. La bride 16 comprend quatre taraudages 17 destinés à recevoir les vis 19. En son milieu, la bride 16 comprend une ouverture 18 dont la forme et les dimensions sont choisies de manière à permettre un engrainement entre la couronne 6 et le pignon intermédiaire logés partiellement à l'intérieur de l'ouverture 18 de la bride 16.The figure 8 shows, finally, a bearing housing 3 having the modification necessary for the arrangement according to the invention. Indeed, on the side of the bearing housing 3, is formed a flange 16 on which the drive housing 1 is fixed by means of screws 19 through the through holes 13 of the drive housing 1. The flange 16 comprises four threads 17 in the middle, the flange 16 comprises an opening 18 whose shape and dimensions are chosen so as to allow a engrainement between the crown 6 and the intermediate gear partially housed inside the opening 18 of the flange 16.

Claims (8)

  1. An assembly with a rotating drive connection of an auxiliary member (2) on an internal combustion engine (10), the engine (10) comprising a bearing cap casing (3) and a crankshaft (1) with counterweights (4) housed in the bearing cap casing (3), the auxiliary member (2) being provided with a rotating drive pinion (21) and being drivingly connected to the engine (10) by means of a cascade of pinions (5, 6) comprising at least one idle wheel (5) and a crown (6), characterized in that the crown (6) is crimped on one of the counterweights (4) of the crankshaft (11).
  2. The assembly with a rotating drive connection according to claim 1, characterized in that the auxiliary member (2) and the idle wheel (s) (5) are held by a drive case (1) to be mounted on the bearing cap casing (3) of the engine (10).
  3. The assembly with a rotating drive connection according to claim 1 or 2, characterized in that the auxiliary member (2) and the idle wheel (s) (5) are held by a drive case (1) comprising a carrier (23) shaped to extend inside the bearing cap casing (3).
  4. The assembly with a rotating drive connection according to claim 2 or 3, characterized in that the idle wheel (5) is mounted in the drive case (1) using a pin screw (7).
  5. The assembly with a rotating drive connection according to any of claims 2 to 4, characterized in that the drive case (1) is shaped to be mounted on the bearing cap casing (3) by means of screws (12).
  6. The assembly with a rotating drive connection according to claim 1, characterized in that the cascade of pinions (5, 6) comprises two idle wheels (51, 52) and a crown (6) crimped on one of the counterweights (4) of the crankshaft (11).
  7. The assembly with a rotating drive connection according to claim 4, characterized in that the idle wheels (51, 52) are each mounted in the drive case (1) by means of a pin screw (71, 72).
  8. A drive case (1) for rotatingly driving at least one auxiliary member (2), the case (1) to be mounted on an internal combustion engine (10), the engine (10) comprising a bearing cap casing (3) and a crankshaft (11) with counterweights (4) housed in the bearing cap casing (3), the drive case (1) being shaped so as to also hold the auxiliary member (2) and comprising part of a cascade of pinions (5) designed to create the driving connection between the auxiliary member(s) (2) and the crankshaft (11), the cascade of pinions (5) comprising a crown (6), characterized in that the crown (6) is crimped on a counterweight (4) of the crankshaft (11).
EP05291185A 2004-06-25 2005-06-02 Mounting-assembly of an auxiliary member and housing for driving at least an auxiliary member Not-in-force EP1609965B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0407002 2004-06-25
FR0407002A FR2872236B1 (en) 2004-06-25 2004-06-25 ARRANGEMENT WITH AUXILIARY BODY TRAINING CONNECTION AND TRAINING BOX FOR TRAINING AT LEAST ONE AUXILIARY BODY

Publications (2)

Publication Number Publication Date
EP1609965A1 EP1609965A1 (en) 2005-12-28
EP1609965B1 true EP1609965B1 (en) 2008-12-24

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Application Number Title Priority Date Filing Date
EP05291185A Not-in-force EP1609965B1 (en) 2004-06-25 2005-06-02 Mounting-assembly of an auxiliary member and housing for driving at least an auxiliary member

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EP (1) EP1609965B1 (en)
AT (1) ATE418674T1 (en)
DE (1) DE602005011895D1 (en)
ES (1) ES2319550T3 (en)
FR (1) FR2872236B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006027080A1 (en) * 2006-06-10 2007-12-20 Bayerische Motoren Werke Ag Mounting strut, e.g. for a starter/generator at a motor, has the same thermal coefficient of expansion as the starter cogwheels at the crankshaft to reduce noise emissions
FR2955059B1 (en) * 2010-01-11 2012-07-13 Peugeot Citroen Automobiles Sa ASSEMBLY COMPRISING A THERMAL MOTOR AND A REVERSIBLE ELECTRIC MACHINE
CN104500165A (en) * 2015-01-08 2015-04-08 广西玉柴机器股份有限公司 Lubricating structure of timing mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114586A (en) * 1974-10-17 1978-09-19 Kawasaki Jukogyo Kabushiki Kaisha Accessory mounting means for internal combustion engines
JPS6044484B2 (en) * 1978-09-12 1985-10-03 ヤマハ発動機株式会社 Engine oil pump mounting device
DE19911925A1 (en) * 1999-03-17 2000-09-21 Man Nutzfahrzeuge Ag Arrangement and drive connection of at least one starter / generator to an internal combustion engine

Also Published As

Publication number Publication date
DE602005011895D1 (en) 2009-02-05
FR2872236A1 (en) 2005-12-30
ES2319550T3 (en) 2009-05-08
EP1609965A1 (en) 2005-12-28
FR2872236B1 (en) 2006-11-17
ATE418674T1 (en) 2009-01-15

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