EP2194254A2 - Timing cover containing either a chain or a belt, as well as a cylinder block for an internal combustion engine - Google Patents

Timing cover containing either a chain or a belt, as well as a cylinder block for an internal combustion engine Download PDF

Info

Publication number
EP2194254A2
EP2194254A2 EP09177152A EP09177152A EP2194254A2 EP 2194254 A2 EP2194254 A2 EP 2194254A2 EP 09177152 A EP09177152 A EP 09177152A EP 09177152 A EP09177152 A EP 09177152A EP 2194254 A2 EP2194254 A2 EP 2194254A2
Authority
EP
European Patent Office
Prior art keywords
chain
opening
crankcase
belt
distribution
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.)
Ceased
Application number
EP09177152A
Other languages
German (de)
French (fr)
Other versions
EP2194254A3 (en
Inventor
Martial Dore
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
GM Global Technology Operations LLC
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 EP2194254A2 publication Critical patent/EP2194254A2/en
Publication of EP2194254A3 publication Critical patent/EP2194254A3/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings
    • 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
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/06—Endless member is a belt
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/08—Endless member is a chain

Definitions

  • the present invention relates, in general, to a timing casing indifferently housing a chain or a belt and a cylinder block for an internal combustion engine.
  • a distribution casing is, in general, fixed on the front side of the cylinder block of the engine and comprises at least one crankcase receiving at least partially a first coupling means of the crankshaft and a cylinder head receiving second coupling means with camshafts.
  • This distribution casing comprises transmission means for transmitting the movement of the first coupling means via second coupling means with respectively the respective opening and closing means of at least one inlet and outlet valve. at least one exhaust valve.
  • the second coupling means and a portion of the transmission means are preferably housed in a cylinder block, located above the crankcase.
  • valves said intake and exhaust, arranged in the cylinder head, engine part covering the cylinder block.
  • One or more means for opening and closing the intake and exhaust valves for example camshafts, cause, in a synchronized manner, the opening and closing of these valves.
  • This or these camshafts are arranged in the cylinder head and are rotated by the crankshaft using the coupling means with the appropriate drive ratio, located at its end. All drive elements are housed in the timing case, either in a crankcase or in a cylinder head box.
  • the figure 1 shows the known principle of a belt drive mechanism 1.
  • the material retained for it is preferably the rubber with an inner cable.
  • the system consists of a belt 1 coupling a timing gear 2, as the first coupling means, integral with the crankshaft with a drive sprocket 3 of the camshaft for the intake valves and a drive gear 4 of the camshaft for the exhaust valves. These two drive gears 3 and 4 form the second coupling means.
  • the windings at the different elements to be driven and the tension of the belt are provided by at least one winding roller 5 and a tensioning roller 6.
  • crankcase 7 As shown in figure 2 This technology does not require any lubrication and does not require the use of a perfectly sealed C distribution cover.
  • the various elements of the system are generally protected from external projections by a crankcase in the form of a crankcase 7 surmounted by a cylinder head chamber 8.
  • These two boxes 7 and 8 are each provided with a respective lid 7a and 8a , mostly plastic.
  • the figure 3 shows the known principle of a chain drive mechanism 1 a.
  • the material retained for it is steel.
  • strings such as socket chains or roller chains.
  • the system consists of a chain 1a coupling a timing gear 2a integral with the crankshaft with a drive gear 3a of the camshaft for the intake valves and a drive gear 4a of the camshaft for the exhaust valves.
  • a chain 1a For the coupling technology comprising a chain 1a, the windings at the different elements to be driven and the tension of the chain 1a are provided by at least one winding pad 9 and a tensioning pad 10, itself actuated by a hydraulic tensioner 11
  • Another winding pad 12 guards the chain 1a located between the two pinions 3a and 4a.
  • the figure 4 shows an example of boxes for a distribution casing C 'with chain.
  • This distribution casing C ' is located at the front end of the cylinder block C1 of the engine, intended to be surmounted by a cylinder head.
  • the distribution casing C ' consists of a cylinder head chamber 14 comprising the upper part of the chain system including the drive gears 3a and 4a intake and exhaust camshafts and substantially extending the front end of the breech.
  • the timing case C ' comprises a crankcase 13 comprising the lower and middle portion of the chain system and substantially extending the front end of the cylinder block C1.
  • the problem underlying the present invention is to design an identical distribution casing which can receive both types of existing drive, that is to say, either a chain distribution or a belt distribution, that in leaving the motor base unchanged.
  • the subject of the invention is a distribution casing for a combustion engine, receiving a mechanism for driving the opening and closing of the valves of said engine, said mechanism comprising means for transmitting the rotation of the crankshaft to a or more camshafts, this distribution casing having at least one opening for mounting said mechanism in its interior, said opening being sealed by a closing means once said mounted mechanism, characterized in that its dimensions and shapes as well as those of its opening are determined to take into account the specific characteristics of the transmission means with chain or belt to receive indifferently one or the other.
  • the distribution casing consists of a crankcase with a front opening for receiving the first part of said mechanism comprising a first means of coupling with the crankshaft, the transmission means of the chain or belt type being integral with this first coupling means, this crankcase being surmounted by a cylinder head chamber provided with an upper opening and receiving the second part of said mechanism comprising second coupling means with the transmission means, each second coupling means being respectively connected to the system for opening and closing at least one intake valve and at least one exhaust valve, arranged at the upper part of this distribution case.
  • crankcase and the cylinder head are monobloc.
  • the opening of the crankcase is made in the form of a hatch closed by a cover plate.
  • the hatch of the crankcase has dimensions determined by extending above this passage to allow the coupling of this shaft with the crankshaft via a drive pinion, the cover plate also covering this passage.
  • the seal between the hatch and the cover plate is essentially flat and vertical.
  • the upper opening of the cylinder head chamber is closed by a cylinder head cover, this opening being substantially in a horizontal plane.
  • these further comprise a tensioning roller and a roller, as well as their fastening means on the distribution casing.
  • these comprise, in addition, a tensioning pad, a winding pad, a hydraulic tensioner actuating the tensioner pad, as well as their fastening means on the timing cover.
  • the second coupling means when the first coupling means is a crankshaft timing gear while the second coupling means are two camshaft drive sprockets for the intake and the exhaust, the second coupling means further comprising, in the case of a chain drive, a chain guide overlying the intermediate surface between the two drive gears to provide guidance for the chain portion between these two gears.
  • the invention is particularly applicable to a motor unit, especially for a motor vehicle, comprising a cylinder block bearing on one of its faces a distribution housing as described above, suitable for a drive chain or belt.
  • the Figures 5 and 6 take up the main features of a training mechanism shown in the figure 1 in a timing case according to the present invention.
  • This timing cover receives Figures 5 and 6 a belt 1, dry or wet, with its drive mechanism but the dimensions of the housing and its shape are not changed.
  • This crankcase consists of a crankcase C3 surmounted by a C2 cylinder box.
  • the two boxes C2 and C3 are advantageously monobloc and are also with the cylinder block C1 which carries them on its front face, as it will be better seen at the figure 7 .
  • the crankcase C3 has a front opening which is sealed by a cover plate 15 with fastening means 16 distributed on its periphery and advantageously by inserting a seal between the plate 15 and the body of the crankcase C3.
  • the opening is in the form of a hatch, that is to say that it does not extend over the entire upper surface of the crankcase C3.
  • the cover plate 15 is advantageously flat and vertical in the working position.
  • This opening is left free to the figure 6 to show the positioning of the various elements of the belt drive mechanism 1, including the rollers 5 and 6 and the crankshaft pinion 2. These are mounted through the opening of the crankcase C3, formed on the front face.
  • the cylinder block chamber C2 also has an opening which is located at its upper part and which will be covered, in a sealed manner, by the cylinder head cover, not shown in these figures.
  • the plane of this opening is substantially horizontal and the cylinder head chamber C2 does not fully encompass the pinions 3 and 4 for driving a camshaft, stopping substantially lower than the mid-height of these.
  • These pinions 3 and 4 are mounted in the cylinder head box C2 from the top of this box through the upper opening, and their respective central axis remains accessible from the front face of the timing case.
  • the distribution casing is arranged in such a way as to indifferently receive a belt drive mechanism 1 or chain. This has been made possible because its dimensions and shapes as well as those of its openings, in particular that of the crankcase C3, are determined to take into account the specific characteristics of the transmission means with chain or belt in order to indifferently receive the one or the other.
  • crankcase opening C3 corresponding to the opening required to allow access to the elements of the two embodiments as well as access to their attachment means, these elements not distributed in the box in the same way for a chain or belt.
  • crankcase C3 It may be advantageous to choose a limited opening of the crankcase C3, ie the minimum opening that allows the assembly of the elements of the two technologies to be positioned in the crankcase C3. This ensures a better seal between the box C3 and the cover plate 15.
  • the opening may not be above the seal at the end of the crankshaft so as not to cause a so-called T seal which is usually a source of oil leaks.
  • the figure 7 shows a cylinder block C1, according to the present invention, comprising on its front face such a distribution case indifferently for chain or belt.
  • the cylinder block is integral with the timing case.
  • this cylinder block C1 further comprises a balancing shaft, which represents another embodiment of the invention indifferently for a belt or for a chain.
  • the shaft or one of the balance shafts is rotated by a gear system having a pinion integral with the crankshaft, if necessary the other balancer shaft being driven by the first also by a gear means.
  • the cover plate 17 is modified so that a portion 17a thereof covers the passage of the balancing shaft, to achieve a seal for it. This can be valid for both types of drive either by chain or belt.
  • FIGS. Figures 5 and 6 are to be reconciled respectively with Figures 5 and 6 to compare the housing of a chain drive mechanism as shown in figures 8 and 9 with the housing of a belt mechanism in a timing case according to the present invention, as shown in FIGS. Figures 5 and 6 .
  • timing case in particular the crankcase C3 and the cylinder head box C2 are the same and the dimensions and shapes of the respective opening of these boxes C2 and C3.
  • the heights of the cylinder head box C2 and the cylinder head cover were determined to be able to receive the chain guide 12, arranged above the part of the chain 1a located between the two pinions 3a and 4a. , and whose equivalent does not exist in the belt drive.
  • the shape of the opening of the crankcase C3 allows access to the winding pad 9 of the chain 1a and the tensioning pad 10 thereof and to the hydraulic tensioner 11 of the tensioner pad 10 and the crankshaft pinion 2a.
  • This opening also allows access to their attachment means in the crankcase C3 to facilitate their implementation.
  • this opening of the crankcase is closed by the same cover plate 15 as in the belt drive embodiment.
  • the main advantage of the present invention makes it possible to develop a distribution casing. This also allows, when it is monoblock with the cylinder block, to develop only one motor base for two types of technologically different distribution drive, so that one or / and the other can be at proposed term on the different engines of a family.
  • An auxiliary advantage of the present invention compared to a chain distribution casing of the state of the art, is to reinforce the tightness of the distribution casing, in particular of the crankcase by the use of a substantially flat cover plate over an opening made in this box, which has been determined to be minimal while allowing access to all the elements contained in this box and to have a favorable shape to strengthen the tightness of this box.
  • Another auxiliary advantage of the present invention is to also guarantee a good sealing of the distribution casing and in particular of the crankcase in the case of an embodiment of the cylinder block using a balancing shaft, the cover plate of the casing performing also the cover of the passage of this tree.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The cover has a chain (1a), a timing gear (2a) and two driving gears (3a, 4a) for opening and closing valves of an engine, where the chain transmits rotation of a crankshaft to multiple camshafts. An opening mounts the chain and gears in an interior of the cover, and is closed in a sealed manner by closure units when the chain and the gears are mounted. Size and shape of the cover same as that of the opening are determined to take into account specific characteristics of the chain to receive the chain or a belt.

Description

La présente invention concerne, d'une façon générale, un carter de distribution logeant indifféremment une chaîne ou une courroie ainsi qu'un bloc cylindres pour un moteur à combustion interne. Un tel carter de distribution est, en général, fixé sur le côté frontal du bloc cylindres du moteur et comprend au moins un caisson vilebrequin recevant au moins partiellement un premier moyen de couplage du vilebrequin ainsi qu'un caisson culasse recevant des seconds moyens de couplage avec les arbres à cames.The present invention relates, in general, to a timing casing indifferently housing a chain or a belt and a cylinder block for an internal combustion engine. Such a distribution casing is, in general, fixed on the front side of the cylinder block of the engine and comprises at least one crankcase receiving at least partially a first coupling means of the crankshaft and a cylinder head receiving second coupling means with camshafts.

Ce carter de distribution comprend des moyens de transmission afin de transmettre le mouvement du premier moyen de couplage par l'intermédiaire de seconds moyens de couplage avec respectivement le moyen d'ouverture et de fermeture respectif d'au moins une soupape d'admission et d'au moins une soupape d'échappement. Les seconds moyens de couplage ainsi qu'une partie des moyens de transmission sont logés préférentiellement dans un caisson culasse, se trouvant au dessus du caisson vilebrequin.This distribution casing comprises transmission means for transmitting the movement of the first coupling means via second coupling means with respectively the respective opening and closing means of at least one inlet and outlet valve. at least one exhaust valve. The second coupling means and a portion of the transmission means are preferably housed in a cylinder block, located above the crankcase.

Dans un moteur à combustion interne, l'admission de l'air dans les cylindres et l'échappement des gaz, résultant de la combustion hors des cylindres, sont réalisés à l'aide de soupapes, dites d'admission et d'échappement, disposées dans la culasse, pièce moteur coiffant le bloc cylindres.In an internal combustion engine, the admission of air into the cylinders and the exhaust gas, resulting from the combustion out of the cylinders, are made using valves, said intake and exhaust, arranged in the cylinder head, engine part covering the cylinder block.

Un ou plusieurs moyens d'ouverture et de fermeture des soupapes d'admission et d'échappement, par exemple des arbres à cames, provoquent, de manière synchronisée, l'ouverture et la fermeture de ces soupapes.One or more means for opening and closing the intake and exhaust valves, for example camshafts, cause, in a synchronized manner, the opening and closing of these valves.

Ce ou ces arbres à cames sont disposés dans la culasse et sont entraînés en rotation par le vilebrequin à l'aide des moyens de couplage avec le rapport d'entraînement adéquat, situé à son extrémité. Tous les éléments d'entraînement sont logés dans le carter de distribution, soit dans un caisson vilebrequin ou soit dans un caisson culasse.This or these camshafts are arranged in the cylinder head and are rotated by the crankshaft using the coupling means with the appropriate drive ratio, located at its end. All drive elements are housed in the timing case, either in a crankcase or in a cylinder head box.

Il existe aujourd'hui, principalement deux technologies pour réaliser cet entraînement se différenciant soit par l'utilisation d'une courroie soit par l'utilisation d'une chaîne.Today, there are mainly two technologies to achieve this training differentiating either by the use of a belt or the use of a chain.

La figure 1 montre le principe connu d'un mécanisme d'entraînement par courroie 1. Le matériau retenu pour celle-ci est, de préférence, le caoutchouc avec un câble interne. Le système se compose d'une courroie 1 couplant un pignon de distribution 2, comme premier moyen de couplage, solidaire du vilebrequin avec un pignon d'entraînement 3 de l'arbre à cames pour les soupapes d'admission et un pignon d'entraînement 4 de l'arbre à cames pour les soupapes d'échappement. Ces deux pignons d'entraînement 3 et 4 forment les seconds moyens de couplage.The figure 1 shows the known principle of a belt drive mechanism 1. The material retained for it is preferably the rubber with an inner cable. The system consists of a belt 1 coupling a timing gear 2, as the first coupling means, integral with the crankshaft with a drive sprocket 3 of the camshaft for the intake valves and a drive gear 4 of the camshaft for the exhaust valves. These two drive gears 3 and 4 form the second coupling means.

Les enroulements au niveau des différents éléments à entraîner et la tension de la courroie sont assurés par au moins un galet enrouleur 5 et un galet tendeur 6.The windings at the different elements to be driven and the tension of the belt are provided by at least one winding roller 5 and a tensioning roller 6.

Comme montré à la figure 2, ne nécessitant aucune lubrification, cette technologie ne nécessite pas l'emploi d'un carter de distribution C parfaitement étanche. Les différents éléments du système sont généralement protégés des projections extérieures par un carter de distribution sous la forme d'un caisson vilebrequin 7 surmonté d'un caisson culasse 8. Ces deux caissons 7 et 8 sont munis chacun d'un couvercle 7a et 8a respectif, la plupart du temps en plastique.As shown in figure 2 This technology does not require any lubrication and does not require the use of a perfectly sealed C distribution cover. The various elements of the system are generally protected from external projections by a crankcase in the form of a crankcase 7 surmounted by a cylinder head chamber 8. These two boxes 7 and 8 are each provided with a respective lid 7a and 8a , mostly plastic.

La figure 3 montre le principe connu d'un mécanisme d'entraînement par chaîne 1 a. En ce qui concerne l'entraînement par chaîne, le matériau retenu pour celle-ci est l'acier. Plusieurs types de chaînes existent, par exemple des chaînes à douilles ou des chaînes à rouleaux.The figure 3 shows the known principle of a chain drive mechanism 1 a. As regards the chain drive, the material retained for it is steel. There are several types of strings, such as socket chains or roller chains.

Le système se compose d'une chaîne 1a couplant un pignon de distribution 2a solidaire du vilebrequin avec un pignon d'entraînement 3a de l'arbre à cames pour les soupapes d'admission et un pignon d'entraînement 4a de l'arbre à cames pour les soupapes d'échappement. Pour la technologie de couplage comportant une chaîne 1a, les enroulements au niveau des différents éléments à entraîner et la tension de la chaîne 1a sont assurés par au moins un patin enrouleur 9 et un patin tendeur 10, lui-même actionné par un tendeur hydraulique 11. Un autre patin enrouleur 12 assure le guidage de la chaîne 1a se trouvant entre les deux pignons 3a et 4a.The system consists of a chain 1a coupling a timing gear 2a integral with the crankshaft with a drive gear 3a of the camshaft for the intake valves and a drive gear 4a of the camshaft for the exhaust valves. For the coupling technology comprising a chain 1a, the windings at the different elements to be driven and the tension of the chain 1a are provided by at least one winding pad 9 and a tensioning pad 10, itself actuated by a hydraulic tensioner 11 Another winding pad 12 guards the chain 1a located between the two pinions 3a and 4a.

Contrairement au système à courroie, tous les systèmes à chaîne nécessitent une lubrification. Par conséquent, les différents éléments doivent être enserrés dans des réceptacles parfaitement étanches, par exemple des caissons.Unlike the belt system, all chain systems require lubrication. Therefore, the various elements must be enclosed in perfectly sealed receptacles, for example boxes.

La figure 4 montre un exemple de caissons pour un carter de distribution C' avec chaîne. Ce carter de distribution C' se trouve à l'extrémité frontale du bloc cylindres C1 du moteur, destiné à être surmonté par une culasse. A cette figure, le carter de distribution C' se compose d'un caisson culasse 14 comprenant la partie supérieure du système à chaîne avec notamment les pignons d'entraînement 3a et 4a des arbres à cames d'admission et d'échappement et prolongeant sensiblement l'extrémité frontale de la culasse. De plus, le carter de distribution C' comprend un caisson vilebrequin 13 comprenant la partie inférieure et médiane du système à chaîne et prolongeant sensiblement l'extrémité frontale du bloc cylindres C1.The figure 4 shows an example of boxes for a distribution casing C 'with chain. This distribution casing C 'is located at the front end of the cylinder block C1 of the engine, intended to be surmounted by a cylinder head. In this figure, the distribution casing C 'consists of a cylinder head chamber 14 comprising the upper part of the chain system including the drive gears 3a and 4a intake and exhaust camshafts and substantially extending the front end of the breech. In addition, the timing case C 'comprises a crankcase 13 comprising the lower and middle portion of the chain system and substantially extending the front end of the cylinder block C1.

Ces deux technologies nécessitent actuellement des développements spécifiques et des carters de distribution différents selon la technologie employée.These two technologies currently require specific developments and different distribution cases depending on the technology used.

Il a été essayé de conserver tous les avantages de la courroie, tout en conservant les aménagements pour la chaîne en concevant une courroie dite humide, ayant la particularité de pouvoir évoluer en milieu huileux. Toutefois, les parcours de la chaîne ou d'une courroie de distribution dans les deux modes de réalisation du couplage entre vilebrequin et arbre à cames, ainsi que les différents composants de chacune des deux technologies sont spécifiques à chaque application et il n'a pas été conçu de carter de distribution universel pour ces différentes technologies.It has been tried to retain all the advantages of the belt, while keeping the arrangements for the chain by designing a so-called wet belt, having the distinction of being able to evolve in an oily environment. However, the course of the chain or timing belt in the two embodiments of the coupling between crankshaft and camshaft, and the different components of each of the two technologies are specific to each application and it does not been designed universal distribution case for these different technologies.

Le problème à la base de la présente invention est de concevoir un carter de distribution identique qui peut recevoir les deux types d'entraînement existants, c'est-à-dire, soit une distribution par chaîne ou soit une distribution par courroie, cela en laissant la base moteur inchangée.The problem underlying the present invention is to design an identical distribution casing which can receive both types of existing drive, that is to say, either a chain distribution or a belt distribution, that in leaving the motor base unchanged.

A cet effet, l'invention a pour objet un carter de distribution pour moteur à combustion, recevant un mécanisme d'entraînement d'ouverture et de fermeture des soupapes dudit moteur, ledit mécanisme comportant des moyens de transmission de la rotation du vilebrequin à un ou plusieurs arbres à cames, ce carter de distribution présentant au moins une ouverture pour le montage dudit mécanisme dans son intérieur, ladite ouverture étant fermée de manière étanche par un moyen de fermeture une fois ledit mécanisme monté, caractérisé en ce que ses dimensions et formes de même que celles de son ouverture sont déterminées pour tenir compte des caractéristiques spécifiques des moyens de transmission avec chaîne ou avec courroie afin de recevoir indifféremment l'une ou l'autre.For this purpose, the subject of the invention is a distribution casing for a combustion engine, receiving a mechanism for driving the opening and closing of the valves of said engine, said mechanism comprising means for transmitting the rotation of the crankshaft to a or more camshafts, this distribution casing having at least one opening for mounting said mechanism in its interior, said opening being sealed by a closing means once said mounted mechanism, characterized in that its dimensions and shapes as well as those of its opening are determined to take into account the specific characteristics of the transmission means with chain or belt to receive indifferently one or the other.

Dans une variante, le carter de distribution se compose d'un caisson vilebrequin avec une ouverture frontale pour la réception de la première partie dudit mécanisme comportant un premier moyen de couplage avec le vilebrequin, les moyens de transmission du type chaîne ou courroie étant solidaires de ce premier moyen de couplage, ce caisson vilebrequin étant surmonté d'un caisson culasse muni d'une ouverture supérieure et recevant la seconde partie dudit mécanisme comportant des seconds moyens de couplage avec les moyens de transmission, chaque second moyen de couplage étant relié respectivement au système d'ouverture et de fermeture d'au moins une soupape d'admission et d'au moins une soupape d'échappement, disposées à la partie supérieure de ce carter de distribution.In a variant, the distribution casing consists of a crankcase with a front opening for receiving the first part of said mechanism comprising a first means of coupling with the crankshaft, the transmission means of the chain or belt type being integral with this first coupling means, this crankcase being surmounted by a cylinder head chamber provided with an upper opening and receiving the second part of said mechanism comprising second coupling means with the transmission means, each second coupling means being respectively connected to the system for opening and closing at least one intake valve and at least one exhaust valve, arranged at the upper part of this distribution case.

De préférence, le caisson vilebrequin et le caisson culasse sont monoblocs.Preferably, the crankcase and the cylinder head are monobloc.

De préférence encore, l'ouverture du caisson vilebrequin est réalisée sous la forme d'une trappe fermée par une plaque de couverture. Dans cette variante, quand le caisson vilebrequin comporte au moins un passage pour un arbre d'équilibrage s'étendant transversalement audit caisson, la trappe du caisson vilebrequin présente des dimensions déterminées en s'étendant au dessus de ce passage afin de permettre le couplage de cet arbre avec le vilebrequin par l'intermédiaire d'un pignon d'entraînement, la plaque de couverture recouvrant aussi ce passage.More preferably, the opening of the crankcase is made in the form of a hatch closed by a cover plate. In this variant, when the crankcase comprises at least one passage for a balancing shaft extending transversely to said box, the hatch of the crankcase has dimensions determined by extending above this passage to allow the coupling of this shaft with the crankshaft via a drive pinion, the cover plate also covering this passage.

Avantageusement, l'étanchéité entre la trappe et la plaque de couverture est essentiellement plane et verticale.Advantageously, the seal between the hatch and the cover plate is essentially flat and vertical.

Dans une variante, l'ouverture supérieure du caisson culasse est fermée par un couvre culasse, cette ouverture se trouvant sensiblement dans un plan horizontal.In a variant, the upper opening of the cylinder head chamber is closed by a cylinder head cover, this opening being substantially in a horizontal plane.

Dans une variante, quand les moyens de transmission utilisent une courroie, ceux-ci comprennent, en outre, un galet tendeur et un galet enrouleur, ainsi que leurs moyens de fixation sur le carter de distribution.In a variant, when the transmission means use a belt, these further comprise a tensioning roller and a roller, as well as their fastening means on the distribution casing.

Dans une variante, quand les moyens de transmission utilisent une chaîne, ceux-ci comprennent, en outre, un patin tendeur, un patin enrouleur, un tendeur hydraulique actionnant le patin tendeur, ainsi que leurs moyens de fixation sur le carter de distribution.In a variant, when the transmission means use a chain, these comprise, in addition, a tensioning pad, a winding pad, a hydraulic tensioner actuating the tensioner pad, as well as their fastening means on the timing cover.

Dans une variante, quand le premier moyen de couplage est un pignon de distribution sur vilebrequin tandis que les seconds moyens de couplage sont deux pignons d'entraînement de l'arbre à cames pour l'admission et l'échappement, les seconds moyens de couplage comprenant, en outre, dans le cas d'un entraînement par chaîne, un guide chaine surmontant la surface intermédiaire entre les deux pignons d'entraînement afin de réaliser un guidage pour la partie de chaîne se trouvant entre ces deux pignons.In a variant, when the first coupling means is a crankshaft timing gear while the second coupling means are two camshaft drive sprockets for the intake and the exhaust, the second coupling means further comprising, in the case of a chain drive, a chain guide overlying the intermediate surface between the two drive gears to provide guidance for the chain portion between these two gears.

L'invention s'applique tout particulièrement à un groupe moteur, notamment pour véhicule automobile, comportant un bloc cylindres portant sur une de ses faces un carter de distribution tel que décrit précédemment, apte à un entrainement par chaine ou par courroie.The invention is particularly applicable to a motor unit, especially for a motor vehicle, comprising a cylinder block bearing on one of its faces a distribution housing as described above, suitable for a drive chain or belt.

L'invention va maintenant être décrite plus en détail mais de façon non limitative en regard des figures annexées, dans lesquelles :

  • • - la figure 1 est une représentation schématique du principe connu de fonctionnement d'un mécanisme d'entraînement par courroie pour un carter de distribution de moteur à combustion interne,
  • • la figure 2 est une représentation schématique en perspective en vue de dessus d'un carter de distribution de moteur à combustion interne connu de l'état de la technique,
  • • la figure 3 est une représentation schématique du principe connu de fonctionnement d'un mécanisme d'entraînement par chaîne pour un carter de distribution de moteur à combustion interne,
  • • la figure 4 est une représentation schématique en perspective en vue de trois quart avant d'un carter de distribution de moteur à combustion interne connu de l'état de la technique avec un mécanisme d'entraînement par chaîne,
  • • la figure 5 est une représentation schématique en perspective en vue de trois quart avant d'un carter de distribution conformément à la présente invention, ce carter de distribution intégrant un mécanisme d'entraînement par courroie et la plaque de couverture de ce carter étant mise en place,
  • • la figure 6 est une représentation schématique d'une vue de face d'un carter de distribution selon la présente invention, ce carter de distribution intégrant un mécanisme d'entraînement par courroie et la plaque de couverture de ce carter ayant été omise,
  • • la figure 7 est une représentation schématique en perspective en vue de trois quart avant d'un bloc cylindres conformément à la présente invention, le carter de distribution de celui-ci présentant une plaque de couverture adapté à la présence d'un arbre d'équilibrage dans ce bloc cylindres,
  • • la figure 8 est une représentation schématique en perspective en vue de trois quart avant d'un carter de distribution conformément à la présente invention, ce carter de distribution intégrant un mécanisme d'entraînement par chaîne et la plaque de couverture de ce carter étant mise en place,
  • • la figure 9 est une représentation schématique d'une vue de face d'un carter de distribution selon la présente invention, ce carter de distribution intégrant un mécanisme d'entraînement par chaîne et la plaque de couverture de ce carter ayant été omise.
The invention will now be described in more detail but in a nonlimiting manner with reference to the appended figures, in which:
  • • - the figure 1 is a schematic representation of the known principle of operation of a belt drive mechanism for an internal combustion engine distribution casing,
  • • the figure 2 is a diagrammatic representation in perspective view from above of an internal combustion engine distribution casing known from the state of the art,
  • • the figure 3 is a schematic representation of the known principle of operation of a chain drive mechanism for an internal combustion engine distribution casing,
  • • the figure 4 is a diagrammatic perspective representation for a three-quarter front view of an internal combustion engine distribution casing known from the state of the art with a chain drive mechanism,
  • • the figure 5 is a diagrammatic perspective view in view of three quarters before a timing case according to the present invention, this distribution case incorporating a belt drive mechanism and the cover plate of this case being put in place,
  • • the figure 6 is a schematic representation of a front view of a timing case according to the present invention, this distribution case incorporating a belt drive mechanism and the cover plate of this case has been omitted,
  • • the figure 7 is a diagrammatic perspective view for three-quarter front of a cylinder block according to the present invention, the distribution casing thereof having a cover plate adapted to the presence of a balancer shaft in this block cylinders,
  • • the figure 8 is a diagrammatic perspective representation for a three-quarter front of a distribution casing in accordance with the present invention, this distribution casing incorporating a chain drive mechanism and the cover plate of this casing being put in place,
  • • the figure 9 is a schematic representation of a front view of a timing case according to the present invention, this distribution case incorporating a chain drive mechanism and the cover plate of this case has been omitted.

Les figures 1 à 4 ont déjà été décrites dans la partie introductive de la présente description.The Figures 1 to 4 have already been described in the introductory part of this description.

Les figures 5 et 6 reprennent les principales caractéristiques d'un mécanisme d'entraînement montré à la figure 1 dans un carter de distribution selon la présente invention. Ce carter de distribution reçoit aux figures 5 et 6 une courroie 1, sèche ou humide, avec son mécanisme d'entraînement mais les dimensions du carter et sa forme n'en sont pas modifiées.The Figures 5 and 6 take up the main features of a training mechanism shown in the figure 1 in a timing case according to the present invention. This timing cover receives Figures 5 and 6 a belt 1, dry or wet, with its drive mechanism but the dimensions of the housing and its shape are not changed.

Ce carter de distribution se compose d'un caisson vilebrequin C3 surmonté par un caisson culasse C2. Les deux caissons C2 et C3 sont avantageusement monoblocs et le sont aussi avec le bloc cylindres C1 qui les porte sur sa face frontale, comme il sera mieux vu à la figure 7.This crankcase consists of a crankcase C3 surmounted by a C2 cylinder box. The two boxes C2 and C3 are advantageously monobloc and are also with the cylinder block C1 which carries them on its front face, as it will be better seen at the figure 7 .

A la figure 5, le caisson vilebrequin C3 présente une ouverture frontale qui est fermée de manière étanche par une plaque de couverture 15 à l'aide de moyens de fixation 16 répartis sur sa périphérie et avantageusement en intercalant un joint entre la plaque 15 et le corps du caisson vilebrequin C3. Avantageusement, l'ouverture est sous forme d'une trappe, c'est-à-dire qu'elle ne s'étend pas sur toute la surface supérieure du caisson vilebrequin C3. La plaque de couverture 15 est avantageusement plane et verticale en position de travail.To the figure 5 , the crankcase C3 has a front opening which is sealed by a cover plate 15 with fastening means 16 distributed on its periphery and advantageously by inserting a seal between the plate 15 and the body of the crankcase C3. Advantageously, the opening is in the form of a hatch, that is to say that it does not extend over the entire upper surface of the crankcase C3. The cover plate 15 is advantageously flat and vertical in the working position.

Cette ouverture est laissée libre à la figure 6 pour montrer le positionnement des divers éléments du mécanisme d'entraînement à courroie 1, notamment les galets 5 et 6 ainsi que le pignon de vilebrequin 2. Ceux-ci sont montés à travers l'ouverture du caisson vilebrequin C3, pratiquée sur face frontale.This opening is left free to the figure 6 to show the positioning of the various elements of the belt drive mechanism 1, including the rollers 5 and 6 and the crankshaft pinion 2. These are mounted through the opening of the crankcase C3, formed on the front face.

Le caisson culasse C2 présente lui aussi une ouverture qui se situe à sa partie supérieure et qui sera recouverte, de manière étanche, par le couvre culasse, non montrée à ces figures. Le plan de cette ouverture est sensiblement horizontal et le caisson culasse C2 n'englobe pas entièrement les pignons 3 et 4 d'entraînement d'un arbre à cames, en s'arrêtant sensiblement plus bas que la mi-hauteur de ceux-ci. Ces pignons 3 et 4 sont montés dans le caisson culasse C2 par le haut de ce caisson à travers l'ouverture supérieure, et leur axe central respectif reste accessible par la face frontale du carter de distribution.The cylinder block chamber C2 also has an opening which is located at its upper part and which will be covered, in a sealed manner, by the cylinder head cover, not shown in these figures. The plane of this opening is substantially horizontal and the cylinder head chamber C2 does not fully encompass the pinions 3 and 4 for driving a camshaft, stopping substantially lower than the mid-height of these. These pinions 3 and 4 are mounted in the cylinder head box C2 from the top of this box through the upper opening, and their respective central axis remains accessible from the front face of the timing case.

Selon la présente invention, le carter de distribution est agencé de telle manière à recevoir indifféremment un mécanisme d'entraînement par courroie 1 ou par chaîne. Ceci a été rendu possible du fait que ses dimensions et formes de même que celles de ses ouvertures, notamment celle du caisson vilebrequin C3, sont déterminées pour tenir compte des caractéristiques spécifiques des moyens de transmission avec chaîne ou avec courroie afin de recevoir indifféremment l'une ou l'autre.According to the present invention, the distribution casing is arranged in such a way as to indifferently receive a belt drive mechanism 1 or chain. This has been made possible because its dimensions and shapes as well as those of its openings, in particular that of the crankcase C3, are determined to take into account the specific characteristics of the transmission means with chain or belt in order to indifferently receive the one or the other.

Cela se traduit par un caisson vilebrequin C3 présentant une grande étanchéité même si cela n'est pas nécessaire lors de la réception d'une courroie 1 sèche.This results in a C3 crankcase having a high seal even if this is not necessary when receiving a belt 1 dry.

Cela se traduit encore par un caisson vilebrequin C3 présentant la plus grande dimension exigée par les formes de réalisation à chaîne ou à courroie 1 afin de pouvoir contenir le mécanisme d'entraînement le plus volumineux.This still results in a C3 crankcase having the largest dimension required by the embodiments chain or belt 1 to be able to contain the largest drive mechanism.

Cela se traduit aussi par une ouverture de caisson de vilebrequin C3 correspondant à l'ouverture requise pour permettre l'accès aux éléments des deux formes de réalisation de même que l'accès à leurs moyens de fixation, ces éléments n'étant pas répartis dans le caisson de la même manière pour une chaîne ou une courroie.This also results in a crankcase opening C3 corresponding to the opening required to allow access to the elements of the two embodiments as well as access to their attachment means, these elements not distributed in the box in the same way for a chain or belt.

Il peut être avantageux de choisir une ouverture limitée du caisson vilebrequin C3, c'est à dire l'ouverture minimale qui permette le montage des éléments des deux technologies à positionner dans le caisson vilebrequin C3. Cela permet de garantir une meilleure étanchéité entre le caisson C3 et la plaque de couverture 15. Par exemple, l'ouverture pourra ne pas être au dessus du joint d'étanchéité en bout de vilebrequin afin de ne pas occasionner une étanchéité dite en T qui est en général source de fuites d'huile.It may be advantageous to choose a limited opening of the crankcase C3, ie the minimum opening that allows the assembly of the elements of the two technologies to be positioned in the crankcase C3. This ensures a better seal between the box C3 and the cover plate 15. For example, the opening may not be above the seal at the end of the crankshaft so as not to cause a so-called T seal which is usually a source of oil leaks.

La figure 7 montre un bloc cylindres C1, selon la présente invention, comportant sur sa face frontale un tel carter de distribution indifféremment pour chaîne ou courroie. De préférence, le bloc cylindres est monobloc avec le carter de distribution.The figure 7 shows a cylinder block C1, according to the present invention, comprising on its front face such a distribution case indifferently for chain or belt. Preferably, the cylinder block is integral with the timing case.

A la figure 7, ce bloc cylindres C1 comporte de plus un arbre d'équilibrage, ce qui représente une autre forme de réalisation de l'invention indifféremment pour une courroie ou pour une chaîne.To the figure 7 , this cylinder block C1 further comprises a balancing shaft, which represents another embodiment of the invention indifferently for a belt or for a chain.

Les efforts dus aux explosions dans les cylindres de même que l'inertie des pièces en mouvement provoquent des vibrations et des bruits indésirables lors de la marche du véhicule. Il est connu de réduire ces phénomènes par l'utilisation d'arbres d'équilibrage, souvent au nombre de deux et entraînés en rotation de sens contraire par le vilebrequin.The forces due to the explosions in the cylinders as well as the inertia of the moving parts cause vibrations and unwanted noise when the vehicle is running. It is known to reduce these phenomena by the use of balance shafts, often two in number and driven in rotation in opposite directions by the crankshaft.

L'arbre ou un des arbres d'équilibrage est entraîné en rotation par un système d'engrenages comportant un pignon solidaire du vilebrequin, le cas échéant l'autre arbre d'équilibrage étant entraîné par le premier également par un moyen d'engrenage.The shaft or one of the balance shafts is rotated by a gear system having a pinion integral with the crankshaft, if necessary the other balancer shaft being driven by the first also by a gear means.

A la figure 7, un seul arbre d'équilibrage est montré. Celui-ci s'étend longitudinalement dans le bloc cylindres C1 et est monté par la face frontale de ce bloc portant aussi le carter de distribution qui est traversé transversalement par cet arbre. Une connexion de l'arbre d'équilibrage avec l'extrémité du vilebrequin est aussi nécessaire de ce côté.To the figure 7 only one balancer shaft is shown. This extends longitudinally in the cylinder block C1 and is mounted by the front face of this block also bearing the distribution casing which is traversed transversely by this shaft. A connection of the balance shaft with the end of the crankshaft is also necessary on this side.

Dans cette forme de réalisation avec arbre d'équilibrage, la plaque de couverture 17 est modifiée pour qu'une partie 17a de celle-ci recouvre le passage de l'arbre d'équilibrage, permettant de réaliser une étanchéité pour celui-ci. Ceci peut être valable pour les deux types d'entraînement soit par chaîne soit par courroie.In this embodiment with balancing shaft, the cover plate 17 is modified so that a portion 17a thereof covers the passage of the balancing shaft, to achieve a seal for it. This can be valid for both types of drive either by chain or belt.

Les figures 8 et 9 sont à rapprocher respectivement des figures 5 et 6 pour comparer le logement d'un mécanisme d'entraînement à chaîne comme il est montré aux figures 8 et 9 avec le logement d'un mécanisme à courroie dans un carter de distribution selon la présente invention, comme il est montré aux figures 5 et 6.The figures 8 and 9 are to be reconciled respectively with Figures 5 and 6 to compare the housing of a chain drive mechanism as shown in figures 8 and 9 with the housing of a belt mechanism in a timing case according to the present invention, as shown in FIGS. Figures 5 and 6 .

Les dimensions et formes du carter de distribution, notamment du caisson vilebrequin C3 et du caisson culasse C2 sont les mêmes ainsi que les dimensions et formes de l'ouverture respective de ces caissons C2 et C3.The dimensions and shapes of the timing case, in particular the crankcase C3 and the cylinder head box C2 are the same and the dimensions and shapes of the respective opening of these boxes C2 and C3.

Les hauteurs du caisson culasse C2 et du couvre-culasse, ce dernier étant non montré aux figures, ont été déterminées pour pouvoir recevoir le guide chaîne 12, disposé au dessus de la partie de la chaîne 1a se trouvant entre les deux pignons 3a et 4a, et dont l'équivalent n'existe pas dans l'entraînement par courroie.The heights of the cylinder head box C2 and the cylinder head cover, the latter being not shown in the figures, were determined to be able to receive the chain guide 12, arranged above the part of the chain 1a located between the two pinions 3a and 4a. , and whose equivalent does not exist in the belt drive.

De même, la forme de l'ouverture du caisson vilebrequin C3 permet l'accès au patin enrouleur 9 de la chaîne 1a et au patin tendeur 10 de celle-ci ainsi qu'au tendeur hydraulique 11 du patin tendeur 10 et au pignon de vilebrequin 2a. Cette ouverture permet aussi l'accès à leurs moyens de fixation dans le caisson vilebrequin C3 pour faciliter leur mise en place. Dans la forme de réalisation à entraînement par chaîne 1a, cette ouverture du caisson vilebrequin est fermée par une même plaque de couverture 15 que dans le mode de réalisation à entraînement par courroie.Similarly, the shape of the opening of the crankcase C3 allows access to the winding pad 9 of the chain 1a and the tensioning pad 10 thereof and to the hydraulic tensioner 11 of the tensioner pad 10 and the crankshaft pinion 2a. This opening also allows access to their attachment means in the crankcase C3 to facilitate their implementation. In the chain drive embodiment 1a, this opening of the crankcase is closed by the same cover plate 15 as in the belt drive embodiment.

Le principal avantage de la présente invention permet de ne développer qu'un carter de distribution. Cela permet aussi, quand celui-ci est monobloc avec le bloc cylindres, de ne développer qu'une base moteur pour deux types d'entraînement de distribution technologiquement différents, de telle sorte que l'un ou/et l'autre puissent être à terme proposés sur les différents moteurs d'une famille.The main advantage of the present invention makes it possible to develop a distribution casing. This also allows, when it is monoblock with the cylinder block, to develop only one motor base for two types of technologically different distribution drive, so that one or / and the other can be at proposed term on the different engines of a family.

Un avantage auxiliaire de la présente invention, par rapport à un carter de distribution à chaîne de l'état de la technique, est de renforcer l'étanchéité du carter de distribution, notamment du caisson vilebrequin par l'utilisation d'une plaque de couverture sensiblement plane au dessus d'une ouverture pratiquée dans ce caisson, qui a été déterminée pour être minimale tout en permettant l'accès à tous les éléments contenus dans ce caisson et pour présenter une forme favorable au renforcement de l'étanchéité de ce caisson.An auxiliary advantage of the present invention, compared to a chain distribution casing of the state of the art, is to reinforce the tightness of the distribution casing, in particular of the crankcase by the use of a substantially flat cover plate over an opening made in this box, which has been determined to be minimal while allowing access to all the elements contained in this box and to have a favorable shape to strengthen the tightness of this box.

Un autre avantage auxiliaire de la présente invention est de garantir aussi une bonne étanchéité du carter de distribution et notamment du caisson vilebrequin dans le cas d'une forme de réalisation du bloc cylindres utilisant un arbre d'équilibrage, la plaque de couverture du caisson effectuant aussi la couverture du passage de cet arbre.Another auxiliary advantage of the present invention is to also guarantee a good sealing of the distribution casing and in particular of the crankcase in the case of an embodiment of the cylinder block using a balancing shaft, the cover plate of the casing performing also the cover of the passage of this tree.

Claims (10)

Carter de distribution pour moteur à combustion, recevant un mécanisme d'entraînement (1, 1a, 2, 2a, 3a, 4a) d'ouverture et de fermeture des soupapes dudit moteur, ledit mécanisme (1, 1a, 2, 2a, 3a, 4a) comportant des moyens de transmission (1, 1a) de la rotation du vilebrequin à un ou plusieurs arbres à cames, ce carter de distribution présentant au moins une ouverture pour le montage dudit mécanisme (1, 1a, 2, 2a, 3a, 4a) dans son intérieur, ladite ouverture étant fermée de manière étanche par un moyen de fermeture (15, 17) une fois ledit mécanisme (1, 1a, 2, 2a, 3a, 4a) monté, caractérisé en ce que ses dimensions et formes de même que celles de son ouverture sont déterminées pour tenir compte des caractéristiques spécifiques des moyens de transmission avec chaîne (1a) ou avec courroie (1) afin de recevoir indifféremment l'une ou l'autre.Distribution casing for a combustion engine, receiving a valve opening and closing mechanism (1, 1a, 2a, 3a, 4a) for said engine, said mechanism (1, 1a, 2, 2a, 3a , 4a) having means (1, 1a) for transmitting the rotation of the crankshaft to one or more camshafts, said timing case having at least one opening for mounting said mechanism (1, 1a, 2, 2a, 3a , 4a) in its interior, said opening being sealed by a closing means (15, 17) once said mechanism (1, 1a, 2, 2a, 3a, 4a) mounted, characterized in that its dimensions and forms as well as those of its opening are determined to take into account the specific characteristics of the transmission means with chain (1a) or with belt (1) to receive indifferently one or the other. Carter de distribution selon la revendication 1, caractérisé en qu'il se compose d'un caisson vilebrequin (C3) avec une ouverture frontale pour la réception de la première partie dudit mécanisme comportant un premier moyen de couplage (2, 2a) avec le vilebrequin, les moyens de transmission du type chaîne (1a) ou courroie (1) étant solidaires de ce premier moyen de couplage (2, 2a), ce caisson vilebrequin (C3) étant surmonté d'un caisson culasse (C2) muni d'une ouverture supérieure et recevant la seconde partie dudit mécanisme comportant des seconds moyens de couplage (3, 4 ; 3a, 4a) avec les moyens de transmission (1, 1a), chaque second moyen de couplage (3, 4 ; 3a, 4a) étant relié respectivement au système d'ouverture et de fermeture d'au moins une soupape d'admission et d'au moins une soupape d'échappement, disposées à la partie supérieure de ce carter de distribution.Dispatch casing according to claim 1, characterized in that it consists of a crankcase (C3) with a front opening for receiving the first part of said mechanism comprising a first coupling means (2, 2a) with the crankshaft , the transmission means of the chain type (1a) or belt (1) being integral with this first coupling means (2, 2a), this crank chamber (C3) being surmounted by a cylinder head chamber (C2) provided with a opening and receiving the second part of said mechanism having second coupling means (3, 4; 3a, 4a) with the transmission means (1, 1a), each second coupling means (3, 4; 3a, 4a) being connected respectively to the opening and closing system of at least one intake valve and at least one exhaust valve, arranged at the upper part of this distribution case. Carter de distribution selon la revendication 2, caractérisé en ce que le caisson vilebrequin (C3) et le caisson culasse (C2) sont monoblocs.Dispatch housing according to claim 2, characterized in that the crankcase (C3) and the cylinder head (C2) are monobloc. Carter de distribution selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que l'ouverture du caisson vilebrequin (C3) est sous forme d'une trappe fermée par une plaque de couverture (15, 17).Dispatch casing according to any one of claims 2 or 3, characterized in that the opening of the crankcase (C3) is in the form of a hatch closed by a cover plate (15, 17). Carter de distribution selon la revendication 4, caractérisé en ce que, quand le caisson vilebrequin (C3) comporte au moins un passage pour un arbre d'équilibrage s'étendant transversalement audit caisson, la trappe du caisson vilebrequin (C3) présente des dimensions déterminées en s'étendant au dessus de ce passage afin de permettre le couplage de cet arbre avec le vilebrequin par l'intermédiaire d'un pignon d'entraînement.Dispatch box according to claim 4, characterized in that , when the crankcase (C3) comprises at least one passage for a balancing shaft extending transversely to said box, the hatch of the crankcase (C3) has dimensions determined extending above this passage to allow the coupling of this shaft with the crankshaft via a drive pinion. Carter de distribution selon la revendication 4 ou 5, caractérisé en ce que l'étanchéité entre la trappe et la plaque de couverture (15, 17) est essentiellement plane et verticale.Dispensing casing according to claim 4 or 5, characterized in that the seal between the hatch and the cover plate (15, 17) is substantially flat and vertical. Carter de distribution selon l'une quelconque des revendications 2 à 6, caractérisé en ce que l'ouverture supérieure du caisson culasse C2 est fermée par un couvre culasse, cette ouverture se trouvant sensiblement dans un plan horizontal.Distribution housing according to any one of claims 2 to 6, characterized in that the upper opening of the cylinder head chamber C2 is closed by a cylinder head cover, this opening being substantially in a horizontal plane. Carter de distribution selon l'une quelconque des revendications précédentes, caractérisé en ce que, quand les moyens de transmission utilisent une courroie (1), ceux-ci comprennent, en outre, un galet tendeur (6) et un galet enrouleur (5), ainsi que leurs moyens de fixation sur le carter de distribution.Dispensing case according to one of the preceding claims, characterized in that, when the transmission means use a belt (1), these comprise, in addition, a tensioner roller (6) and a roller (5) , as well as their fastening means on the timing case. Carter de distribution selon l'une quelconque des revendications 1 à 7, caractérisé en ce que, quand les moyens de transmission utilisent une chaîne (1a), ceux-ci comprennent, en outre, un patin tendeur (10), un patin enrouleur (9), un tendeur hydraulique (11) actionnant le patin tendeur (10), ainsi que leurs moyens de fixation sur le carter de distribution.Dispensing casing according to any one of claims 1 to 7, characterized in that, when the transmission means use a chain (1a), these further comprise a tensioning pad (10), a roller shoe ( 9), a hydraulic tensioner (11) actuating the tensioner pad (10), and their attachment means on the timing case. Carter de distribution selon l'une quelconque des revendications 2 à 9, caractérisé en ce que le premier moyen de couplage est un pignon de distribution (2, 2a) sur vilebrequin tandis que les seconds moyens de couplage sont deux pignons d'entraînement (3a, 4a) de l'arbre à cames pour l'admission et l'échappement, les seconds moyens (3a, 4a) de couplage comprenant, en outre, dans le cas d'un entraînement par chaîne, un guide chaîne (12) surmontant la surface intermédiaire entre les deux pignons d'entraînement (3a, 4a) afin de réaliser le guidage pour la partie de chaîne (1a) se trouvant entre ces deux pignons (3a, 4a).Dispensing casing according to any one of claims 2 to 9, characterized in that the first coupling means is a timing gear (2, 2a) on the crankshaft while the second coupling means are two drive gears (3a). 4a) of the camshaft for intake and exhaust, the second coupling means (3a, 4a) further comprising, in the case of a chain drive, a chain guide (12) surmounting the intermediate surface between the two drive gears (3a, 4a) for guiding the chain part (1a) between these two gears (3a, 4a).
EP09177152.7A 2008-12-03 2009-11-26 Timing cover containing either a chain or a belt, as well as a cylinder block for an internal combustion engine Ceased EP2194254A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0858217A FR2939179B1 (en) 2008-12-03 2008-12-03 DISTRIBUTION HOUSING INDIORLY PROVIDING A CHAIN OR BELT AND CYLINDER BLOCK FOR AN INTERNAL COMBUSTION ENGINE.

Publications (2)

Publication Number Publication Date
EP2194254A2 true EP2194254A2 (en) 2010-06-09
EP2194254A3 EP2194254A3 (en) 2015-04-15

Family

ID=40857825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09177152.7A Ceased EP2194254A3 (en) 2008-12-03 2009-11-26 Timing cover containing either a chain or a belt, as well as a cylinder block for an internal combustion engine

Country Status (2)

Country Link
EP (1) EP2194254A3 (en)
FR (1) FR2939179B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3135304A1 (en) * 2022-05-05 2023-11-10 Psa Automobiles Sa ENGINE GROUP COMPRISING A COMBINED COMPONENT FIXING SUPPORT, MOTOR VEHICLE COMPRISING SUCH A ENGINE GROUP

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3012531B1 (en) * 2013-10-31 2015-12-04 Peugeot Citroen Automobiles Sa CYLINDER CASTER OF AN INTERNAL COMBUSTION ENGINE.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH031240U (en) * 1989-05-30 1991-01-09
JP2570992Y2 (en) * 1991-03-18 1998-05-13 三菱自動車工業株式会社 Engine structure
DE19511864C1 (en) * 1995-03-31 1996-07-25 Daimler Benz Ag Internal combustion engine for simplified assembly
JP3840037B2 (en) * 2000-05-23 2006-11-01 富士重工業株式会社 Engine breather equipment
JP2005344699A (en) * 2004-06-01 2005-12-15 Shinichiro Yamamoto Separate type timing case (with cam chain and tensioner in one unit, timing belt and tensioner in one unit or built-in cam gear)
JP2006070758A (en) * 2004-08-31 2006-03-16 Aichi Mach Ind Co Ltd Internal combustion engine
DE202004021645U1 (en) * 2004-10-16 2009-12-03 Audi Ag Cylinder crankcase for a reciprocating internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3135304A1 (en) * 2022-05-05 2023-11-10 Psa Automobiles Sa ENGINE GROUP COMPRISING A COMBINED COMPONENT FIXING SUPPORT, MOTOR VEHICLE COMPRISING SUCH A ENGINE GROUP

Also Published As

Publication number Publication date
EP2194254A3 (en) 2015-04-15
FR2939179A1 (en) 2010-06-04
FR2939179B1 (en) 2013-04-12

Similar Documents

Publication Publication Date Title
FR2515729A1 (en) INTERNAL COMBUSTION ENGINE COMPRISING A MOTOR BLOCK AND A HALF-CARTER FORMS OF A SINGLE PIECE
FR2722241A1 (en) Valve drive for IC engine
FR2481743A1 (en) RENIFLARD FOR ENGINES WITH HEAD VALVES
FR2613420A1 (en) BREATHER DEVICE AND ADJUSTING DEVICE FOR ADJUSTING THE FOUR-TIME ENGINE TIMING CHAIN TENSIONER
FR2575693A1 (en) INTAKE DEVICE FOR ENGINE, AND CHAIN SAW
FR3084107A1 (en) COVER STRUCTURE OF AN INTERNAL COMBUSTION ENGINE
EP2194254A2 (en) Timing cover containing either a chain or a belt, as well as a cylinder block for an internal combustion engine
KR100688221B1 (en) Subsidiary mechanism attachment structure of internal combustion engine
EP0560701A1 (en) Internal combustion engine with adjustable compression ratio and mass of the fly wheel
FR2776017A1 (en) INTERNAL COMBUSTION ENGINE COMPRISING AN ANTI-ROTATING DEVICE
FR2809771A1 (en) OUTBOARD INTAKE MANIFOLD
JP5315066B2 (en) Seal structure in water pump for internal combustion engine
EP0124433A2 (en) Removable housing for the camshaft drive of an internal-combustion engine
TWI244525B (en) Exhaust gas sensor mounting structure for cylinder head of an internal combustion engine
FR2643417A1 (en) VALVE ASSEMBLY FOR EXPLOSION ENGINES
FR3066539A1 (en) CARTER GAS TREATMENT STRUCTURE IN A CRANKCASE GAS RECOVERY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
FR3145188A1 (en) INTERNAL COMBUSTION ENGINE ASSEMBLY (M)
EP1653072B1 (en) Engine cover
FR2879650A1 (en) Oil pump arrangement for e.g. motor vehicle internal combustion engine, has pumping pinions positioned partially in housing hollowed around opening of crankcase, along engine direction, and in crankcase and bearing cap fixed under cap
FR3069576A1 (en) ENGINE WITH INTEGRATED DRIVE SHAFT AND ACCESS HAT FOR THIS TREE
EP1536154A2 (en) Coupling device for two rotating shafts
EP2876278A1 (en) Timing cover including a vacuum pump driven by a drive belt of the accessory front panel of a cylinder case
FR3001763A1 (en) Combustion engine for car, has partition wall separating oil pan and part of oil pump extending above maximum oil level in oil pan, so that partition wall retains portion of oil in contact with oil pump above partition wall
EP1541848A1 (en) Engine for scooter
FR2726033A1 (en) THERMAL ENGINE FOR A MOTOR VEHICLE EQUIPPED WITH A COMPRESSOR AIR CONDITIONING DEVICE

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PEUGEOT CITROEN AUTOMOBILES SA

Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: F02B 67/06 20060101AFI20150311BHEP

Ipc: F02F 7/00 20060101ALI20150311BHEP

17P Request for examination filed

Effective date: 20150819

RBV Designated contracting states (corrected)

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PSA AUTOMOBILES SA

Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC

17Q First examination report despatched

Effective date: 20180215

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20180629