EP4288645A1 - Anti-emulsion plate with gas blow-by passage - Google Patents

Anti-emulsion plate with gas blow-by passage

Info

Publication number
EP4288645A1
EP4288645A1 EP22701980.9A EP22701980A EP4288645A1 EP 4288645 A1 EP4288645 A1 EP 4288645A1 EP 22701980 A EP22701980 A EP 22701980A EP 4288645 A1 EP4288645 A1 EP 4288645A1
Authority
EP
European Patent Office
Prior art keywords
plate
oil
emulsion
emulsion plate
boss
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.)
Pending
Application number
EP22701980.9A
Other languages
German (de)
French (fr)
Inventor
Claudio Canini
Valentin FRADET
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.)
New H Powertrain Holding SLU
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP4288645A1 publication Critical patent/EP4288645A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F01M2011/005—Oilsumps with special anti-turbulence means, e.g. anti-foaming means or intermediate plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F01M2011/0062—Gaskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/0011—Breather valves
    • F01M2013/0016—Breather valves with a membrane

Definitions

  • the present invention relates to an internal combustion engine.
  • the present invention relates to a device for treating oil circulating in a thermal or internal combustion engine of a motor vehicle.
  • the present invention relates more particularly to a device for treating oil vapors in said heat engine.
  • a motor vehicle with internal combustion engine comprises an internal combustion engine capable of propelling said vehicle, said engine is installed in an engine compartment generally at the front of the vehicle.
  • the engine is formed by a cylinder head arranged above a cylinder block itself fixed above an oil sump.
  • a plate is arranged between the cylinder block and the oil pan to limit the movements of the oil, in particular in the oil pan, on the free surface of the oil slick.
  • the anti-emulsion plate has through holes for the passage of oil on the one hand to send it to the engine elements or on the other hand to collect and return oil to the oil sump. .
  • the publication FR3057610-A1 thus proposes an anti-emulsion plate arranged above an oil sump and comprising an opening towards the oil sump and means for directing the oil towards a zone of suction arranged in the oil sump.
  • Publication FR2961859-A1 discloses an anti-emulsion plate arranged between the cylinder block and the oil pan and comprising a passage orifice whose section is meshed to filter the oil passing through to the engine components.
  • the object of the invention is to remedy these problems and one of the objects of the invention is an anti-emulsion plate arranged between the oil sump and the cylinder block which has means for escaping the vapors of 'oil.
  • the present invention relates more particularly to an anti-emulsion plate arranged between an oil pan and a cylinder block of a heat engine of a motor vehicle,
  • said plate comprises at least one zone for collecting oil vapors which are then evacuated through a through opening of the plate pierced at a high point of the collection zone.
  • the anti-emulsion plate comprises at least one zone for collecting blow-by gases which are then evacuated by a through leak orifice pierced at a high point of the at least one zone, with a simple and natural circulating movement of gases.
  • the collection zone is formed by a recess in the anti-emulsion plate facing the oil sump.
  • the anti-emulsion plate may comprise at least one recess facing the oil sump to promote the collection of oil vapors trapped in the oil sump.
  • the collection zone is formed in the convex part facing the oil sump of a boss formed in the plate.
  • the collection zone is formed below a boss, in the convex part of the boss facing the oil sump or towards the lower part of the engine. Oil vapors can therefore simply accumulate in said area before escaping through the upper part of the boss.
  • the boss formed on the plate is intended to be placed between two barrels of the cylinder block.
  • the boss for collecting the oil vapors formed in the oil sump is arranged between two barrels of the cylinder block when the anti-emulsion plate is mounted between the oil sump and the cylinder block, leak hole pierced in the upper part of the boss can direct the oil vapors towards the pistons and connecting rods to improve the lubrication of the moving elements, in particular in rotation.
  • the boss extends in a transverse direction of the engine between two longitudinal edges of the opposite plate.
  • the boss extends transversely to the longitudinal axis of the engine between a first longitudinal edge of the plate and a second opposite longitudinal edge to provide sufficient collection volume.
  • the boss is formed by stamping.
  • the boss is formed by stamping, which makes it possible to obtain the plate at a lower cost.
  • the orifice comprises a closing grid to reduce the risk of oil submersion through the plate.
  • the grid is formed by a sieve of substantially close mesh.
  • a sieve with substantially mesh is placed at the leak opening to allow the oil vapors to settle.
  • the collected oil falls directly into the oil sump.
  • FIG. 1 is a schematic sectional view of part of a heat engine.
  • FIG.2 is a schematic longitudinal sectional view of a heat engine.
  • FIG.3 is a schematic view of an anti-emulsion plate according to the invention.
  • a thermal or internal combustion engine 50 in particular for a motor vehicle, comprises a cylinder head (not shown) covering a cylinder block 51 which delimits a chamber 52 in the lower part to accommodate a crankshaft which is rotatable about the longitudinal axis X, at the level of a horizontal joint plane 53.
  • the walls of said chamber 52 comprise a fixing sidewalk 54 against which a fixing sole 55 is fixed in support allows an oil sump (not shown) to be attached.
  • the motor 50 has substantially the shape of a rectangular parallelepiped which extends along a longitudinal axis X defined as the axis of the motor.
  • Said engine therefore has two opposite vertical longitudinal faces 56 which are an intake face and an exhaust face and two opposite vertical transverse faces 57 which are a distribution face and a transmission face.
  • the cylinder block comprises cylindrical recesses 58 or cylinders that extend along a vertical axis Z orthogonal to the horizontal joint plane 53.
  • each cylinder can be inserted a barrel or a cylindrical sleeve in which slides a piston along the axis of the barrel substantially parallel to the vertical axis Z.
  • the engine generally comprises at least two cylinders separated from each other by a space called the interbarrel space 59 which extends transversely, along the transverse axis Y which is parallel to the joint plane 53 and perpendicular to the longitudinal axis X of the engine.
  • the chamber 52 is formed of several connecting rod chambers. Each connecting rod chamber is arranged below a cylinder 58.
  • a crankshaft (not shown) rotatable about an axis parallel to the longitudinal axis X of the engine is housed in the chamber 52.
  • the oil sump (not shown) is fixed below the cylinder block, against the fixing plate 55 and forms a reservoir of oil used during engine operation.
  • the oil is sucked in by an oil pump via a strainer to be conveyed to engine components, for example to lubricate the pistons or to cool the cylinder head.
  • the oil then falls under the effect of gravity towards the oil sump.
  • an anti-emulsion plate 10 is arranged above the tablecloth of oil contained in the oil sump, in particular between the fixing plate 55 and the oil sump.
  • the invention is not limited to the positioning of the anti-emulsion plate, the latter can be inserted in the oil sump or in the mounting plate 55 or in the cylinder block 51.
  • the anti-emulsion plate 10 is arranged between the oil pan and the mounting plate 55.
  • the oil pan is arranged below of the cylinder block along the vertical axis Z directed from the bottom upwards here from the oil sump towards the cylinder head.
  • the anti-emulsion plate 10 is substantially rectangular and has two longitudinal sides 111 substantially parallel to the longitudinal axis X of the engine and two transverse sides l it orthogonal to the longitudinal sides 111.
  • the plate has at least one transverse boss 12 which extends transversely between one longitudinal side 111 and the other opposite longitudinal side.
  • the profile of the boss along the longitudinal axis X is substantially U-shaped, convex and facing down, towards the oil pan.
  • the plate 10 has in its lower wall 13 facing the oil sump at least one convex recess 14.
  • Said recess 14 makes it possible to collect oil vapors trapped in the oil sump by said plate.
  • Said recess forms a gas collection zone 15; the ceiling 16 of said zone is thus arranged higher than the lower wall 13 of the plate outside the recess. The gases are then directed naturally towards the collection zone or towards the recess 14 and in particular towards the ceiling of said recess.
  • the ceiling 16 of the recess has a leak opening 17 for oil vapours; thus the opening is preferably arranged at the highest point of the collection zone 15 in the recess 14. Said vapors or gases collected in the recess can then escape from the oil sump towards the cylinder block 51.
  • the leak opening reduces the risk of overpressure in the oil sump.
  • the transverse boss 12 is arranged below the space between barrels 58 of the cylinder block.
  • the escaping oil vapors can thus be mixed in the connecting rod chamber 52, in particular below the cylinder 58.
  • the leakage opening 17 is arranged in the middle position of the transverse boss 12.
  • the leakage opening may have small but sufficiently wide dimensions of the order of ten of mm2 for example 20 mm2.
  • the wide leakage opening 17 is closed by a passage or leakage grid 18.
  • Said grid has fine meshes to prevent liquid oil from passing through the opening and therefore the anti-corrosion plate. emulsion.
  • the grid 18 is therefore formed by a sieve 19 with fine or substantially tight mesh.
  • the fine meshes also allow an oil vapor settling effect.
  • the said vapors which pass through the fine meshes can deposit liquid oil on the meshes and the gases can pass through more easily.
  • the gas pressure inside the oil pan is then reduced and controlled to an equilibrium level.
  • the oil pump which pumps the oil into the crankcase will therefore not pump an excessive quantity of oil to lubricate/cool the engine components.
  • the meshes are of the order of a few tens of ⁇ m, for example 70 ⁇ m, a known size which can be produced by plastic injection or metal mesh.
  • the sieve 19 allows a first settling effect and the collected oil can fall directly into the oil sump.
  • each transverse boss has a groove along the longitudinal axis X crossing the entire width of the transverse boss and air-connecting two neighboring or adjacent connecting rod chambers. Said groove or connecting channel makes it possible to optimally homogenize the pressures between the different connecting rod chambers.
  • transverse boss having multiple remote leak holes over its entire surface.
  • the recess can extend from a first longitudinal side of the plate to the opposite second longitudinal side.
  • the plate can also be obtained by molding or by plastic injection.

Landscapes

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

Abstract

Disclosed is an anti-emulsion plate (10) placed between an oil pan and a cylinder casing (51) of a motor vehicle heat engine, characterised in that said plate (10) comprises at least one collection zone (15) for collecting oil vapors, which are then discharged via a bleed-off port (17) passing through the plate (10), pierced at an upper point of the collection zone (15).

Description

Description Description
Titre de l'invention : Plaque anti-émulsion avec passage gaz blow-by Domaine technique de 1’invention Title of the invention: Anti-emulsion plate with blow-by gas passage Technical field of the invention
[0001] La présente invention concerne un moteur à combustion interne. The present invention relates to an internal combustion engine.
[0002] La présente invention concerne un dispositif de traitement de l’huile circulant dans un moteur thermique ou à combustion interne de véhicule automobile. The present invention relates to a device for treating oil circulating in a thermal or internal combustion engine of a motor vehicle.
[0003] La présente invention concerne plus particulièrement un dispositif de traitement des vapeurs d’huile dans ledit moteur thermique. The present invention relates more particularly to a device for treating oil vapors in said heat engine.
Etat de la technique State of the art
[0004] Un véhicule automobile à motorisation thermique comporte un moteur à combustion interne apte à propulser ledit véhicule, ledit moteur est installé dans un compartiment moteur généralement à l’avant du véhicule. [0004] A motor vehicle with internal combustion engine comprises an internal combustion engine capable of propelling said vehicle, said engine is installed in an engine compartment generally at the front of the vehicle.
[0005] Le moteur est formé par une culasse disposée au dessus d’un carter-cylindres lui- même fixé au dessus d’un carter d’huile. [0005] The engine is formed by a cylinder head arranged above a cylinder block itself fixed above an oil sump.
[0006] L’huile est ainsi aspirée depuis le carter d’huile pour être amenée vers des éléments du moteur disposés dans le carter-cylindres et dans la culasse aux fins de lubrifaction et/ou de refroidissement. Elle revient ensuite essentiellement par gravité vers le carter d’huile. [0006] The oil is thus sucked from the oil sump to be conveyed to the engine elements arranged in the cylinder block and in the cylinder head for the purposes of lubrication and/or cooling. It then essentially returns by gravity to the oil sump.
[0007] Une plaque est disposée entre le carter-cylindres et le carter d’huile pour limiter les mouvements de l’huile notamment dans le carter d’huile, à la surface libre de la nappe d’huile. [0007] A plate is arranged between the cylinder block and the oil pan to limit the movements of the oil, in particular in the oil pan, on the free surface of the oil slick.
[0008] La plaque anti-émulsion comporte des orifices traversants pour le passage d’huile pour d’une part l’envoyer vers les éléments du moteur ou d’autre part de recueil et de retour d’huile vers le carter d’huile. [0008] The anti-emulsion plate has through holes for the passage of oil on the one hand to send it to the engine elements or on the other hand to collect and return oil to the oil sump. .
[0009] La publication FR3057610-A1 propose ainsi une plaque anti-émulsion disposée au dessus d’un carter d’huile et comprenant une ouverture vers le carter d’huile et des moyens d’orientation de l’huile vers une zone d’aspiration disposée dans le carter d’huile. [0009] The publication FR3057610-A1 thus proposes an anti-emulsion plate arranged above an oil sump and comprising an opening towards the oil sump and means for directing the oil towards a zone of suction arranged in the oil sump.
[0010] La publication FR2961859-A1 divulgue une plaque anti-émulsion disposée entre le carter cylindres et le carter d’huile et comprenant un orifice de passage dont la section est grillagée pour filtrer l’huile de passage vers les éléments du moteur. [0010] Publication FR2961859-A1 discloses an anti-emulsion plate arranged between the cylinder block and the oil pan and comprising a passage orifice whose section is meshed to filter the oil passing through to the engine components.
[0011] Cependant dans le moteur thermique et dans le carter d’huile se forment des vapeurs d’huile plus connus sous le nom de gaz de blow-by qui circulent dans le moteur depuis le carter d’huile vers la culasse. Eesdites vapeurs d’huile sont dirigées vers un décanteur pour recueillir l’huile contenue dans lesdites vapeurs pour être ramenée dans le carter d’huile. [0012] Un problème concerne les vapeurs d’huile qui sont formées dans le carter d’huile et emprisonnées par la plaque anti-émulsion. [0011] However, in the internal combustion engine and in the oil pan, oil vapors are formed, better known as blow-by gases, which circulate in the engine from the oil pan to the cylinder head. Esaid oil vapors are directed to a decanter to collect the oil contained in said vapors to be returned to the oil sump. [0012] One problem relates to the oil vapors which are formed in the oil sump and trapped by the anti-emulsion plate.
[0013] Les vapeurs d’huile ne peuvent donc pas s’échapper vers le carter-cylindres et la culasse et générer un accroissement de la pression au sein du carter d’huile. [0013] The oil vapors cannot therefore escape to the cylinder block and the cylinder head and generate an increase in pressure within the oil pan.
[0014] Il est donc un besoin d’une plaque anti-émulsion qui permet une fuite des vapeurs d’huile contenues dans le carter d’huile. [0014] There is therefore a need for an anti-emulsion plate which allows oil vapor contained in the oil pan to escape.
[0015] Le but de l’invention est de remédier à ces problèmes et un des objets de l’invention est une plaque anti-émulsion disposée entre le carter d’huile et le carter-cylindres qui présente des moyens de fuite des vapeurs d’huile. The object of the invention is to remedy these problems and one of the objects of the invention is an anti-emulsion plate arranged between the oil sump and the cylinder block which has means for escaping the vapors of 'oil.
Présentation de l’invention Presentation of the invention
[0016] La présente invention concerne plus particulièrement une plaque anti-émulsion disposée entre un carter d’huile et un carter cylindre d’un moteur thermique de véhicule automobile, The present invention relates more particularly to an anti-emulsion plate arranged between an oil pan and a cylinder block of a heat engine of a motor vehicle,
[0017] Caractérisé en ce que ladite plaque comprend au moins une zone de recueil de vapeurs d’huile qui sont ensuite évacuées par une ouverture traversante de la plaque percée à un point haut de la zone de recueil. [0017] Characterized in that said plate comprises at least one zone for collecting oil vapors which are then evacuated through a through opening of the plate pierced at a high point of the collection zone.
[0018] De manière avantageuse, la plaque anti-émulsion comporte au moins une zone de recueil des gaz de blow-by qui sont ensuite évacués par un orifice de fuite traversant percé à un point haut de la au-moins une zone, avec un mouvement de circulation simple et naturel des gaz. [0018] Advantageously, the anti-emulsion plate comprises at least one zone for collecting blow-by gases which are then evacuated by a through leak orifice pierced at a high point of the at least one zone, with a simple and natural circulating movement of gases.
[0019] Selon d’autres caractéristiques de l’invention : [0019] According to other characteristics of the invention:
[0020] -la zone de recueil est formée par un renfoncement de la plaque anti-émulsion tournée vers le carter d’huile. [0020] -the collection zone is formed by a recess in the anti-emulsion plate facing the oil sump.
[0021] De manière avantageuse, la plaque anti-émulsion peut comprendre au moins un renfoncement tourné vers le carter d’huile pour favoriser le recueil des vapeurs d’huile piégées dans le carter d’huile. [0021] Advantageously, the anti-emulsion plate may comprise at least one recess facing the oil sump to promote the collection of oil vapors trapped in the oil sump.
[0022] -la zone de recueil est formée en partie convexe tournée vers le carter d’huile d’un bossage formé dans la plaque. [0022] the collection zone is formed in the convex part facing the oil sump of a boss formed in the plate.
[0023] De manière avantageuse, la zone de recueil est formée en dessous d’un bossage, en partie convexe du bossage tournée vers le carter d’huile ou vers la partie inférieure du moteur. Les vapeurs d’huile peuvent donc s’accumuler simplement dans ladite zone avant de s’échapper par la partie haute du bossage. [0023] Advantageously, the collection zone is formed below a boss, in the convex part of the boss facing the oil sump or towards the lower part of the engine. Oil vapors can therefore simply accumulate in said area before escaping through the upper part of the boss.
[0024] -le bossage formé sur la plaque est destiné à être disposé entre deux fûts du carter- cylindres. [0024] the boss formed on the plate is intended to be placed between two barrels of the cylinder block.
[0025] De manière avantageuse, le bossage pour le recueil des vapeurs d’huile formées dans le carter d’huile est disposé entre deux fûts du carter-cylindres quand la plaque antiémulsion est montée entre le carter d’huile et le carter cylindres, l’orifice de fuite percé en partie haute du bossage peut diriger les vapeurs d’huile vers les pistons et bielles pour améliorer la lubrification des éléments en mouvement, notamment en rotation. [0025] Advantageously, the boss for collecting the oil vapors formed in the oil sump is arranged between two barrels of the cylinder block when the anti-emulsion plate is mounted between the oil sump and the cylinder block, leak hole pierced in the upper part of the boss can direct the oil vapors towards the pistons and connecting rods to improve the lubrication of the moving elements, in particular in rotation.
[0026] -le bossage s’étend selon une direction transversale du moteur entre deux bordures longitudinales de la plaque opposées. -the boss extends in a transverse direction of the engine between two longitudinal edges of the opposite plate.
[0027] De manière avantageuse, le bossage s’étend transversalement à l’axe longitudinal du moteur entre une première bordure longitudinale de la plaque et une deuxième bordure longitudinale opposée pour offrir un volume de recueil suffisant. Advantageously, the boss extends transversely to the longitudinal axis of the engine between a first longitudinal edge of the plate and a second opposite longitudinal edge to provide sufficient collection volume.
[0028] -le bossage est formé par emboutissage. -the boss is formed by stamping.
[0029] De manière avantageuse, le bossage est formé par emboutissage ce qui permet une obtention de la plaque à moindre coût. [0029] Advantageously, the boss is formed by stamping, which makes it possible to obtain the plate at a lower cost.
[0030] -l’orifice de fuite est fermée par une grille de fermeture. [0030] -the leak orifice is closed by a closing grid.
[0031] De manière avantageuse, l’orifice comprend une grille de fermeture pour réduire des risques de submersion d’huile au travers de la plaque. [0031] Advantageously, the orifice comprises a closing grid to reduce the risk of oil submersion through the plate.
[0032] -la grille est formé par un tamis de mailles sensiblement serrées. -the grid is formed by a sieve of substantially close mesh.
[0033] De manière avantageuse, un tamis à mailles sensiblement est disposé à l’ouverture de fuite pour permettre une décantation des vapeurs d’huile. Ainsi l’huile recueillie retombe directement dans le carter d’huile. [0033] Advantageously, a sieve with substantially mesh is placed at the leak opening to allow the oil vapors to settle. Thus the collected oil falls directly into the oil sump.
Brève description des figures Brief description of figures
[0034] D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés sur les dessins annexés, dans lesquels : Other characteristics and advantages of the invention will appear on reading the following description of particular embodiments of the invention given by way of non-limiting examples and represented in the appended drawings, in which:
[0035] [fig-1] est une vue schématique de coupe d’une partie d’un moteur thermique. [0035] [fig-1] is a schematic sectional view of part of a heat engine.
[0036] [fig.2] est une vue schématique de coupe longitudinale de moteur thermique. [0036] [fig.2] is a schematic longitudinal sectional view of a heat engine.
[0037] [fig.3] est une vue schématique d’une plaque anti-émulsion selon l’invention. [0037] [fig.3] is a schematic view of an anti-emulsion plate according to the invention.
[0038] Description détaillée des figures [0038] Detailed description of the figures
[0039] Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires. In the following description, identical reference numerals designate identical parts or parts having similar functions.
[0040] Comme représenté en [fig.l], un moteur thermique 50 ou à combustion interne notamment pour un véhicule automobile, comprend une culasse (non représentée) coiffant un carter-cylindres 51 qui délimite une chambre 52 en partie inférieure pour loger un vilebrequin qui est mobile en rotation autour de l’axe longitudinal X, au niveau d’un plan de joint horizontal 53. Les parois de ladite chambre 52 comportent un trottoir de fixation 54 contre lequel vient se fixer en appui une semelle de fixation 55 qui permet d’accrocher un carter d’huile (non représenté). [0040] As shown in [fig.l], a thermal or internal combustion engine 50, in particular for a motor vehicle, comprises a cylinder head (not shown) covering a cylinder block 51 which delimits a chamber 52 in the lower part to accommodate a crankshaft which is rotatable about the longitudinal axis X, at the level of a horizontal joint plane 53. The walls of said chamber 52 comprise a fixing sidewalk 54 against which a fixing sole 55 is fixed in support allows an oil sump (not shown) to be attached.
[0041] Le moteur 50 a sensiblement une forme de parallélépipède rectangle qui s’étend selon un axe longitudinal X défini comme axe du moteur. The motor 50 has substantially the shape of a rectangular parallelepiped which extends along a longitudinal axis X defined as the axis of the motor.
[0042] Ledit moteur présente donc deux faces longitudinales verticales 56 opposées qui sont une face d’admission et une face d’échappement et deux faces transversales verticales opposées 57 qui sont une face de distribution et une face de transmission. [0042] Said engine therefore has two opposite vertical longitudinal faces 56 which are an intake face and an exhaust face and two opposite vertical transverse faces 57 which are a distribution face and a transmission face.
[0043] Le carter-cylindres comprend des évidements cylindriques 58 ou cylindres qu’étendent selon un axe vertical Z orthogonal au plan de joint horizontal 53. The cylinder block comprises cylindrical recesses 58 or cylinders that extend along a vertical axis Z orthogonal to the horizontal joint plane 53.
[0044] Dans chaque cylindre on peut insérer un fût ou une chemise cylindrique dans lequel coulisse un piston selon l’axe du fût sensiblement parallèle à l’axe vertical Z. In each cylinder can be inserted a barrel or a cylindrical sleeve in which slides a piston along the axis of the barrel substantially parallel to the vertical axis Z.
[0045] Le moteur comprend généralement au-moins deux cylindres séparés l’un de l’autre par un espace appelé espace interfûts 59 qui s’étend transversalement, selon l’axe transversal Y qui est parallèle au plan de joint 53 et perpendiculaire à l’axe longitudinal X du moteur. [0045] The engine generally comprises at least two cylinders separated from each other by a space called the interbarrel space 59 which extends transversely, along the transverse axis Y which is parallel to the joint plane 53 and perpendicular to the longitudinal axis X of the engine.
[0046] La chambre 52 est formée de plusieurs chambres de bielle. Chaque chambre de bielle est disposée en dessous d’un cylindre 58. The chamber 52 is formed of several connecting rod chambers. Each connecting rod chamber is arranged below a cylinder 58.
[0047] Un vilebrequin (non représenté) mobile en rotation autour d’un axe parallèle à l’axe longitudinal X du moteur est logé dans la chambre 52. [0047] A crankshaft (not shown) rotatable about an axis parallel to the longitudinal axis X of the engine is housed in the chamber 52.
[0048] Le carter d’huile (non représenté) est fixé en dessous du carter-cylindres, contre la semelle de fixation 55 et forme un réservoir d’huile utilisée lors du fonctionnement du moteur. L’huile est aspirée par une pompe à huile via une crépine pour être amenée à des éléments du moteur par exemple pour lubrifier les pistons ou pour refroidir la culasse. L’huile retombe ensuite sous l’effet de la gravité vers le carter d’huile. The oil sump (not shown) is fixed below the cylinder block, against the fixing plate 55 and forms a reservoir of oil used during engine operation. The oil is sucked in by an oil pump via a strainer to be conveyed to engine components, for example to lubricate the pistons or to cool the cylinder head. The oil then falls under the effect of gravity towards the oil sump.
[0049] Pour contrôler les mouvements de l’huile contenue dans le carter d’huile et permettre par exemple de pomper de façon efficace l’huile pour les éléments du moteur, une plaque anti-émulsion 10 est disposée au-dessus de la nappe d’huile contenue dans le carter d’huile, notamment entre la semelle de fixation 55 et le carter d’huile. To control the movements of the oil contained in the oil pan and allow for example to effectively pump the oil for the engine components, an anti-emulsion plate 10 is arranged above the tablecloth of oil contained in the oil sump, in particular between the fixing plate 55 and the oil sump.
[0050] L’invention ne se limite pas au positionnement de la plaque anti-émulsion, cette dernière peut être insérée dans le carter d’huile ou dans la semelle de fixation 55 ou dans le carter cylindres 51. The invention is not limited to the positioning of the anti-emulsion plate, the latter can be inserted in the oil sump or in the mounting plate 55 or in the cylinder block 51.
[0051] La circulation et l’utilisation de l’huile forment des vapeurs d’huile à différents endroits du moteur et notamment dans le carter d’huile. Lesdites vapeurs sont alors piégées dans ledit carter ce qui peut entrainer une augmentation de pression et des problèmes techniques du moteur comme une surconsommation d’huile par le moteur du fait d’une réaspiration dite franche notamment par le décanteur. En effet, de manière connue, il peut exister des différences de pressions entre les chambres de bielle. L’ouverture peut permettre une homogénéisation des pressions dans les différentes chambres de bielle. [0051] The circulation and use of oil form oil vapors at various points in the engine and in particular in the oil sump. Said vapors are then trapped in said crankcase which can lead to an increase in pressure and technical problems of the engine such as overconsumption of oil by the engine due to a so-called frank re-suction, in particular by the decanter. Indeed, in a known manner, there may be pressure differences between the connecting rod chambers. The opening can allow a homogenization of the pressures in the different connecting rod chambers.
[0052] Selon un mode de réalisation de l’invention préféré présenté en figures 1 et 2, la plaque anti-émulsion 10 est disposée entre le carter d’huile et la semelle de fixation 55. Le carter d’huile est disposé en dessous du carter-cylindre selon l’axe vertical Z dirigé de bas vers le haut ici du carter d’huile vers la culasse. [0053] Selon la [fig.3], la plaque anti-émulsion 10 est sensiblement rectangulaire et présente deux cotés longitudinaux 111 sensiblement parallèles à l’axe longitudinal X du moteur et deux côtés transversaux l it orthogonaux aux côtés longitudinaux 111. According to a preferred embodiment of the invention shown in Figures 1 and 2, the anti-emulsion plate 10 is arranged between the oil pan and the mounting plate 55. The oil pan is arranged below of the cylinder block along the vertical axis Z directed from the bottom upwards here from the oil sump towards the cylinder head. According to [fig.3], the anti-emulsion plate 10 is substantially rectangular and has two longitudinal sides 111 substantially parallel to the longitudinal axis X of the engine and two transverse sides l it orthogonal to the longitudinal sides 111.
[0054] La plaque comporte au-moins un bossage transversal 12 qui s’étend transversalement entre un côté longitudinal 111 et l’autre côté longitudinal opposé. The plate has at least one transverse boss 12 which extends transversely between one longitudinal side 111 and the other opposite longitudinal side.
[0055] Ici on peut voir que le profil du bossage selon l’axe longitudinal X est sensiblement en forme de U, convexe et tourné vers le bas, vers le carter d’huile. Here we can see that the profile of the boss along the longitudinal axis X is substantially U-shaped, convex and facing down, towards the oil pan.
[0056] La plaque 10 présente en sa paroi inférieure 13 tournée vers le carter d’huile au- moins un renfoncement convexe 14. The plate 10 has in its lower wall 13 facing the oil sump at least one convex recess 14.
[0057] Ledit renfoncement 14 permet de recueillir des vapeurs d’huile piégées dans le carter d’huile par ladite plaque. Ledit renfoncement forme une zone de recueil 15 des gaz ; le plafond 16 de ladite zone est ainsi disposé plus haut que la paroi inférieure 13 de la plaque en dehors du renfoncement. Les gaz sont alors dirigés de façon naturelle vers la zone de recueil ou vers le renfoncement 14 et notamment vers le plafond dudit renfoncement. Said recess 14 makes it possible to collect oil vapors trapped in the oil sump by said plate. Said recess forms a gas collection zone 15; the ceiling 16 of said zone is thus arranged higher than the lower wall 13 of the plate outside the recess. The gases are then directed naturally towards the collection zone or towards the recess 14 and in particular towards the ceiling of said recess.
[0058] Le plafond 16 du renfoncement présente une ouverture de fuite 17 pour les vapeurs d’huile; ainsi l’ouverture est disposée de manière préférentielle au point le plus haut de la zone de recueil 15 dans le renfoncement 14. Lesdites vapeurs ou gaz recueillis dans le renfoncement peuvent alors s’échapper du carter d’huile vers le carter cylindre 51. L’ouverture de fuite permet de réduire des risques de surpression dans le carter d’huile. The ceiling 16 of the recess has a leak opening 17 for oil vapours; thus the opening is preferably arranged at the highest point of the collection zone 15 in the recess 14. Said vapors or gases collected in the recess can then escape from the oil sump towards the cylinder block 51. The The leak opening reduces the risk of overpressure in the oil sump.
[0059] De manière préférentielle, le bossage transversal 12 est disposé en-dessous de l’espace interfûts 58 du carter-cylindres. Les vapeurs d’huile qui s’échappent peuvent ainsi être mélangées dans la chambre de bielle 52 notamment en dessous du cylindre 58. Preferably, the transverse boss 12 is arranged below the space between barrels 58 of the cylinder block. The escaping oil vapors can thus be mixed in the connecting rod chamber 52, in particular below the cylinder 58.
[0060] Selon un mode de réalisation de l’invention, l’ouverture de fuite 17 est disposée en position médiane du bossage transversal 12. L’ouverture de fuite peut présenter des dimensions faibles mais suffisamment larges de l’ordre d’une dizaine de mm2 par exemple 20 mm2. According to one embodiment of the invention, the leakage opening 17 is arranged in the middle position of the transverse boss 12. The leakage opening may have small but sufficiently wide dimensions of the order of ten of mm2 for example 20 mm2.
[0061] L’ouverture de fuite large 17 est fermée par une grille de passage ou de fuite 18. Ladite grille présente des mailles fines pour éviter un passage de l’huile liquide au travers de l’ouverture et donc de la plaque anti-émulsion. [0061] The wide leakage opening 17 is closed by a passage or leakage grid 18. Said grid has fine meshes to prevent liquid oil from passing through the opening and therefore the anti-corrosion plate. emulsion.
[0062] La grille 18 est donc formée par un tamis 19 à mailles fines ou sensiblement serrées. The grid 18 is therefore formed by a sieve 19 with fine or substantially tight mesh.
[0063] Les mailles fines permettent également un effet de décantation des vapeurs d’huile. [0063] The fine meshes also allow an oil vapor settling effect.
En effet, lesdites vapeurs qui traversent les mailles fines peuvent déposer de l’huile liquide dur les mailles et les gaz peuvent traverser plus aisément. La pression des gaz à l’intérieur du carter d’huile est alors réduite et contrôlée à un niveau d’équilibre. Indeed, the said vapors which pass through the fine meshes can deposit liquid oil on the meshes and the gases can pass through more easily. The gas pressure inside the oil pan is then reduced and controlled to an equilibrium level.
[0064] La pompe à huile qui pompe l’huile dans le carter ne va donc pas pomper une quantité excessive d’huile pour lubrifier/refroidir des éléments du moteur. [0065] De manière préférentielle, les mailles sont de l’ordre de quelques dizaines de pm par exemple 70 pm, taille connue et réalisable en injection plastique ou en grillage métallique. [0064] The oil pump which pumps the oil into the crankcase will therefore not pump an excessive quantity of oil to lubricate/cool the engine components. Preferably, the meshes are of the order of a few tens of μm, for example 70 μm, a known size which can be produced by plastic injection or metal mesh.
[0066] Le tamis 19 permet un premier effet de décantation et l’huile recueillie peut retomber directement dans le carter d’huile. The sieve 19 allows a first settling effect and the collected oil can fall directly into the oil sump.
[0067] Selon un mode de réalisation non représenté, chaque bossage transversal comporte une rainure selon l’axe X longitudinal traversant toute la largeur du bossage transversal et reliant aérauliquement deux chambres de bielle voisines ou adjacentes. Ladite rainure ou canal de liaison permet d’homogénéiser de façon optimale les pressions entre les différentes chambres de bielle. According to an embodiment not shown, each transverse boss has a groove along the longitudinal axis X crossing the entire width of the transverse boss and air-connecting two neighboring or adjacent connecting rod chambers. Said groove or connecting channel makes it possible to optimally homogenize the pressures between the different connecting rod chambers.
[0068] L’objectif est atteint : [0068] The objective is achieved:
[0069] Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de cette prise, décrites ci-dessus à titre d'exemples, elle en embrasse au contraire toutes les variantes. It goes without saying that the invention is not limited solely to the embodiments of this socket, described above by way of examples, on the contrary it embraces all variants thereof.
[0070] En effet on peut avoir par exemple un bossage transversal présentant de multiples orifices de fuite distants sur toute sa surface. Indeed one can have for example a transverse boss having multiple remote leak holes over its entire surface.
[0071] Le renfoncement peut s’étendre depuis un premier coté longitudinal de la plaque jusqu’à le deuxième côté longitudinal opposé. The recess can extend from a first longitudinal side of the plate to the opposite second longitudinal side.
[0072] La plaque peut aussi être obtenue par moulage ou par injection plastique. The plate can also be obtained by molding or by plastic injection.

Claims

Revendications Claims
[Revendication 1] Plaque anti-émulsion (10) disposée entre un carter d’huile et un carter cylindre (51) d’un moteur thermique de véhicule automobile, Caractérisé en ce que ladite plaque (10) comprend au moins une zone de recueil (15) de vapeurs d’huile qui sont ensuite évacuées par une ouverture de fuite (17) traversante de la plaque (10), percée à un point haut de la zone de recueil (15). [Claim 1] Anti-emulsion plate (10) arranged between an oil pan and a cylinder block (51) of a heat engine of a motor vehicle, characterized in that said plate (10) comprises at least one collection zone (15) oil vapors which are then evacuated through a leakage opening (17) through the plate (10), pierced at a high point of the collection area (15).
[Revendication 2] Plaque anti-émulsion (10) selon la revendication 1, caractérisée en ce que la zone de recueil (15) est formée par un renfoncement (14) de la plaque anti-émulsion tourné vers le carter d’huile. [Claim 2] Anti-emulsion plate (10) according to Claim 1, characterized in that the collection zone (15) is formed by a recess (14) of the anti-emulsion plate facing the oil sump.
[Revendication 3] Plaque anti-émulsion (10) selon la revendication 1 ou 2, caractérisée en ce que la zone de recueil (15) est formée par une partie convexe tournée vers le carter d’huile d’un bossage (12) formé dans la plaque (10). [Claim 3] Anti-emulsion plate (10) according to Claim 1 or 2, characterized in that the collection zone (15) is formed by a convex part facing the oil sump of a boss (12) formed in the plate (10).
[Revendication 4] Plaque anti-émulsion (10) selon la revendication 3, caractérisée en ce que le bossage transversal (12) formé sur ladite plaque (10) est disposé entre deux cylindres (58) du carter-cylindres (51). [Claim 4] Anti-emulsion plate (10) according to Claim 3, characterized in that the transverse boss (12) formed on the said plate (10) is arranged between two cylinders (58) of the cylinder block (51).
[Revendication 5] Plaque anti-émulsion selon la revendication 3 ou 4, caractérisée en ce que le bossage transversal (12) s’étend selon une direction transversale du moteur entre deux bordures longitudinales (111) opposées de la plaque anti-émulsion (10). [Claim 5] Anti-emulsion plate according to Claim 3 or 4, characterized in that the transverse boss (12) extends in a transverse direction of the motor between two opposite longitudinal edges (111) of the anti-emulsion plate (10 ).
[Revendication 6] Plaque anti-émulsion (10) selon l’une quelconque des revendications 3 à[Claim 6] Anti-emulsion plate (10) according to any one of claims 3 to
5, caractérisée en ce que le bossage transversal (12) est formé par emboutissage. 5, characterized in that the transverse boss (12) is formed by stamping.
[Revendication 7] Plaque anti-émulsion (10) selon l’une quelconque des revendications 1 à[Claim 7] Anti-emulsion plate (10) according to any one of claims 1 to
6, caractérisée en ce que l’orifice de fuite (17) est fermée par une grille de passage (18). 6, characterized in that the leak orifice (17) is closed by a passage grid (18).
[Revendication 8] Plaque anti-émulsion (10) selon la revendication 7, caractérisée en ce que la grille (18) est formée par un tamis (19) de mailles fines sensiblement serrées. [Claim 8] Anti-emulsion plate (10) according to Claim 7, characterized in that the grid (18) is formed by a sieve (19) of substantially tight fine mesh.
[Revendication 9] Plaque anti-émulsion selon l’une quelconque des revendications 3 à 8, caractérisé en ce que chaque bossage comprend une rainure longitudinale traversant la largeur du bossage transversal apte à reliant aérau- liquement deux chambres de bielles adjacentes. [Claim 9] Anti-emulsion plate according to any one of Claims 3 to 8, characterized in that each boss comprises a longitudinal groove crossing the width of the transverse boss suitable for aeraulically connecting two adjacent connecting rod chambers.
EP22701980.9A 2021-02-02 2022-01-26 Anti-emulsion plate with gas blow-by passage Pending EP4288645A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2100974A FR3119417B1 (en) 2021-02-02 2021-02-02 Anti-emulsion plate with blow-by gas passage
PCT/EP2022/051789 WO2022167293A1 (en) 2021-02-02 2022-01-26 Anti-emulsion plate with gas blow-by passage

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EP4288645A1 true EP4288645A1 (en) 2023-12-13

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EP (1) EP4288645A1 (en)
CN (1) CN117836505A (en)
FR (1) FR3119417B1 (en)
WO (1) WO2022167293A1 (en)

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JPS49146333U (en) * 1973-04-16 1974-12-17
JP3013389B2 (en) * 1990-04-27 2000-02-28 スズキ株式会社 Engine breather chamber structure
US7918316B2 (en) * 2002-04-30 2011-04-05 Bayerische Motoren Werke Aktiengesellschaft Separating device in a motor vehicle oil circuit
DE10308761A1 (en) * 2003-02-28 2004-09-16 Dr.Ing.H.C. F. Porsche Ag Device for defoaming oil in the lubricant circuit of an internal combustion engine
FR2961859B1 (en) 2010-06-24 2012-07-06 Mecaplast Sa OIL PAN TO BE FIXED TO A MOTOR BLOCK
FR3057610B1 (en) 2016-10-18 2019-11-22 Novares France OIL PAN
JP2019210833A (en) * 2018-06-01 2019-12-12 三菱自動車工業株式会社 Oil pan structure of engine

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WO2022167293A1 (en) 2022-08-11
FR3119417A1 (en) 2022-08-05
CN117836505A (en) 2024-04-05

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