EP2104780B1 - Thermal engine for an automotive vehicle comprising a water-pump bleeding duct - Google Patents

Thermal engine for an automotive vehicle comprising a water-pump bleeding duct Download PDF

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Publication number
EP2104780B1
EP2104780B1 EP07858535A EP07858535A EP2104780B1 EP 2104780 B1 EP2104780 B1 EP 2104780B1 EP 07858535 A EP07858535 A EP 07858535A EP 07858535 A EP07858535 A EP 07858535A EP 2104780 B1 EP2104780 B1 EP 2104780B1
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EP
European Patent Office
Prior art keywords
duct
cylinder block
engine
heat engine
internal circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07858535A
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German (de)
French (fr)
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EP2104780A1 (en
Inventor
Frédéric BENET
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Renault SAS
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Renault SAS
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Publication of EP2104780B1 publication Critical patent/EP2104780B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/028—Deaeration devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps

Definitions

  • the invention relates to a motor vehicle engine.
  • the invention more particularly relates to a motor vehicle engine of the type which comprises at least one cylinder block which comprises a first internal circuit for circulating a cooling liquid, of the type in which the first internal circuit comprises an internal duct of supply having an inlet opening into a receiving chamber, or "volute" of a rotor of a substantially cylindrical motor water pump, which is formed in the block, said chamber having in an intermediate portion a supply port whose level is arranged above the level of the inlet opening of the inner supply duct of the first internal circuit.
  • thermal engines of this type are known.
  • a known disadvantage of this type of engine is related to the particular arrangement of the supply port of the receiving chamber or "volute" of the water pump relative to the inlet of the first circuit.
  • This residual air pocket prevents the priming of the water pump when the engine is started, which can result in a deterioration of the water pump or a lack of circulation of the coolant in the cooling circuit of the engine. vehicle.
  • the invention proposes a motor of the type described above comprising means for purging the upper part of the receiving chamber or volute of the water pump.
  • the invention proposes a heat engine of the type described above, characterized in that it comprises an additional degassing conduit which connects an upper part of the receiving chamber or volute of the water pump to an element of the circuit. cooling the motor to allow full gravity filling of the receiving chamber when filling the first internal circuit.
  • FIG. 1 a motor vehicle engine 10 having a block 11, commonly called “cylinder block”, capped with a cylinder head 13.
  • the cylinder block 11 comprises a first internal circuit 12 for circulating a cooling liquid which is intended for example to cool the engine block 11 by allowing a circulation of a coolant around the cylinders 15 of the engine.
  • the first internal circuit 12 comprises an internal supply duct 14 including an inlet port 16 opens into a receiving chamber 18 also called “volute” which is arranged in the block 11 and which is intended to receive a rotor (not shown) of a water pump fitted to the engine 10.
  • the receiving chamber 18 is formed in the cylinder block 11 and it comprises in an intermediate portion 20, arranged for example substantially in line with the axis "A" of rotation of the rotor (not shown) an orifice 22 d supply for allowing the cooling of the engine water pump.
  • the level N 1 of the supply port 22 of the receiving chamber 18 is arranged above the level N 2 of the inlet port 16 of the internal supply conduit 14 of the first internal circuit 12 .
  • a known disadvantage of the thermal engines 10 produced according to this design is related precisely to the difference between the level N 1 of the supply port 22 and the level N 2 of the inlet port 16 of the first internal circuit 12.
  • This residual air pocket prevents the priming of the water pump when the engine is started, which can result in a deterioration of the water pump or a lack of circulation of the coolant in the cooling circuit of the engine. vehicle.
  • the invention proposes a motor 10 of the type described above, comprising means for purging the upper part 24 of the receiving chamber 18 of the water pump.
  • the invention proposes a thermal motor of the type described above, characterized in that it comprises an additional degassing conduit 26 which connects the upper part 24 of the chamber 18 for receiving the water pump to an element of the engine cooling circuit to allow complete gravity filling of the receiving chamber 18 during filling of the first internal circuit 12.
  • the determined element to which is connected the additional conduit 26 is a chamber 28 which is formed in the cylinder block 11 and which is part of the first internal circuit 12.
  • This chamber 28 is for example a peripheral chamber surrounding a cylinder 15 of the cylinder block 11.
  • the additional duct 26 is preferably a duct 26 formed in the cylinder block 11, and this duct 26 is calibrated so as to allow leakage of cooling liquid from the chamber 18 for receiving the pump. water that is sufficient to allow purging of the air bag, and which is nevertheless small enough to not impede the operation of the water pump.
  • the invention advantageously takes advantage of the presence of a cylinder head 13 of the engine which caps the cylinder block 11.
  • a cylinder head gasket 32 is arranged between an upper face 34 of the cylinder block 11 and a lower face 36 of the cylinder head 13.
  • the cylinder head gasket 32 comprises at least one bore 38 which allows the communication of the first internal circuit 12 of the block 11 with a second internal circuit 40 of the cylinder head 30.
  • the determined element to which is connected the additional duct 26 degassing is the bore 38 of the gasket 32 of the cylinder head.
  • the additional duct 26 for degassing is formed in the cylinder block 11 and opens into the upper face 34 of the block 11 via an orifice 30 which is intended to coincide substantially with the bore 38 of the cylinder head gasket 32.
  • the additional duct 26 may advantageously be calibrated by the cylinder head gasket 32 itself, which may more or less obstruct the end of the additional duct 26 constituted by the orifice 30 so as to regulate the flow of coolant circulating in said additional duct 26, in order to allow sufficient degassing of the air bag contained in the receiving chamber 18 without however impeding the operation of the water pump.
  • the additional duct 26 will preferably come from casting with the cylinder block 11, which allows to achieve its calibration only through the seal 32 of the cylinder head without requiring particular machining of said conduit 26.
  • the additional duct 26 may be, in a manner analogous to the first embodiment of the invention, a calibrated duct which opens fully into the bore 38 of the cylinder head gasket, the calibration of the duct additional 26, resulting then from a machining of said duct 26, and in particular of its end orifice 30, in the cylinder block 11.
  • the determined element to which is connected the additional venting duct 26 may be an external conduit 42 for supplying cooling liquid to an engine member, for example an oil cooler 43, said external supply duct 42 being attached to the cylinder block 11.
  • At least one portion 44 of communication of the outer conduit 42 has a wall independent of the cylinder block and a wall forming part of the cylinder block 11, which communicates with the additional conduit 26 via a light 50.
  • design advantageously eliminates the need for a connection of the additional conduit 26 with the communication portion 44 of the outer conduit 42, while ensuring a perfect seal.
  • the external conduit 42 is then delimited in its communication part 44 by its independent wall and by its wall formed outside the cylinder block 11.
  • the invention therefore advantageously makes it possible to degassing the chamber 18 for receiving a water pump from a motor vehicle engine 10, which makes it possible to perform the gravity filling of the cooling circuit without requiring pressure of said cooling circuit.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Motor Or Generator Frames (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A thermal engine for an automotive vehicle, including at least one cylinder block including a first inner circuit for circulating a cooling liquid, of the type in which the first inner circuit includes an outer supply duct including an inlet opening into a reception chamber for a rotor of the engine water pump formed in the block. The chamber includes in its intermediate portion a supply opening having a level located above the level of the inlet opening of the inner supply duct of the first inner circuit. An additional degassing duct connects the upper portion of the reception chamber or water pump volute with an element of the engine cooling circuit.

Description

L'invention concerne un moteur thermique de véhicule automobile.The invention relates to a motor vehicle engine.

L'invention concerne plus particulièrement un moteur thermique de véhicule automobile, du type qui comporte au moins un bloc cylindres qui comporte un premier circuit interne de circulation d'un liquide de refroidissement, du type dans lequel le premier circuit interne comporte un conduit interne d'alimentation dont un orifice d'entrée débouche dans une chambre de réception, ou "volute" d'un rotor d'une pompe à eau du moteur, sensiblement cylindrique, qui est formée dans le bloc, ladite chambre comportant dans une partie intermédiaire un orifice d'alimentation dont le niveau est agencé au dessus du niveau de l'orifice d'entrée du conduit interne d'alimentation du premier circuit interne.The invention more particularly relates to a motor vehicle engine of the type which comprises at least one cylinder block which comprises a first internal circuit for circulating a cooling liquid, of the type in which the first internal circuit comprises an internal duct of supply having an inlet opening into a receiving chamber, or "volute" of a rotor of a substantially cylindrical motor water pump, which is formed in the block, said chamber having in an intermediate portion a supply port whose level is arranged above the level of the inlet opening of the inner supply duct of the first internal circuit.

On connaît de nombreux exemples de moteurs thermiques de ce type.Many examples of thermal engines of this type are known.

Un inconvénient connu de ce type de moteur est lié à l'agencement particulier de l'orifice d'alimentation de la chambre de réception ou "volute" de la pompe à eau par rapport à l'orifice d'entrée du premier circuit.A known disadvantage of this type of engine is related to the particular arrangement of the supply port of the receiving chamber or "volute" of the water pump relative to the inlet of the first circuit.

En effet, dans cette configuration, lorsque l'on désire remplir par gravité le circuit de refroidissement, une poche d'air se forme dans la partie supérieure de la chambre de réception ou volute qui est située au dessus du niveau de l'orifice d'alimentation de ladite chambre de réception.Indeed, in this configuration, when it is desired to fill the cooling circuit by gravity, an air pocket is formed in the upper part of the receiving chamber or volute which is located above the level of the orifice of the supply of said receiving chamber.

Cette poche d'air résiduelle interdit l'amorçage de la pompe à eau lorsque le moteur est lancé, ce qui peut avoir pour conséquence une détérioration de la pompe à eau ou un défaut de circulation du liquide de refroidissement au sein du circuit de refroidissement du véhicule.This residual air pocket prevents the priming of the water pump when the engine is started, which can result in a deterioration of the water pump or a lack of circulation of the coolant in the cooling circuit of the engine. vehicle.

II est donc nécessaire d'effectuer un remplissage sous pression du circuit de refroidissement pour réaliser un amorçage correct de la pompe à eau.It is therefore necessary to perform a pressure filling of the cooling circuit to achieve correct priming of the water pump.

Pour remédier à cet inconvénient, l'invention propose un moteur du type décrit précédemment comportant des moyens de purge de la partie supérieure de la chambre de réception ou volute de la pompe à eau.To remedy this drawback, the invention proposes a motor of the type described above comprising means for purging the upper part of the receiving chamber or volute of the water pump.

Dans ce but, l'invention propose un moteur thermique du type décrit précédemment, caractérisé en ce qu'il comporte un conduit supplémentaire de dégazage qui relie une partie supérieure de la chambre de réception ou volute de la pompe à eau à un élément du circuit de refroidissement du moteur pour permettre le remplissage complet par gravité de la chambre de réception lors du remplissage du premier circuit interne.For this purpose, the invention proposes a heat engine of the type described above, characterized in that it comprises an additional degassing conduit which connects an upper part of the receiving chamber or volute of the water pump to an element of the circuit. cooling the motor to allow full gravity filling of the receiving chamber when filling the first internal circuit.

Selon d'autres caractéristiques de l'invention :

  • l'élément déterminé est une chambre qui est formée dans le bloc cylindres et qui fait partie du premier circuit interne,
  • le conduit supplémentaire est un conduit calibré formé dans le bloc cylindres,
  • le bloc cylindres est coiffé par une culasse un deuxième circuit interne de circulation d'un liquide de refroidissement communiquant avec le premier circuit interne par l'intermédiaire d'au moins un perçage formé dans un joint de culasse, et l'élément déterminé est ledit perçage du joint de culasse,
  • le conduit supplémentaire est formé dans le bloc cylindres et débouche dans le perçage du joint de culasse,
  • le conduit supplémentaire est venu de fonderie avec le bloc cylindres et est calibré par le joint de culasse,
  • le conduit supplémentaire est un perçage calibré réalisé dans le bloc cylindres,
  • l'élément déterminé est un conduit externe d'alimentation en liquide de refroidissement d'un organe du moteur, notamment un refroidisseur d'huile, ledit conduit externe étant accolé au bloc,
  • le conduit supplémentaire est formé dans le bloc cylindres et débouche dans le conduit externe par l'intermédiaire d'une lumière.
According to other features of the invention:
  • the determined element is a chamber which is formed in the cylinder block and which forms part of the first internal circuit,
  • the additional duct is a calibrated duct formed in the cylinder block,
  • the cylinder block is capped by a cylinder head a second internal circulation circuit of a coolant communicating with the first internal circuit via at least one bore formed in a cylinder head gasket, and the determined element is said drilling the cylinder head gasket,
  • the additional duct is formed in the cylinder block and opens into the bore of the cylinder head gasket,
  • the additional duct came from foundry with the cylinder block and is calibrated by the cylinder head gasket,
  • the additional duct is a calibrated hole made in the cylinder block,
  • the determined element is an external conduit for supplying a cooling fluid to an engine component, in particular an oil cooler, said external conduit being attached to the block,
  • the additional duct is formed in the cylinder block and opens into the outer duct via a light.

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

  • la figure 1 est une vue schématique en perspective d'un bloc d'un moteur selon un état antérieur de la technique ;
  • la figure 2 est une vue schématique de détail en perspective d'un bloc d'un moteur selon un premier mode de réalisation de l'invention ;
  • la figure 3 est une vue schématique de détail en perspective d'un bloc d'un moteur selon un second mode de réalisation de l'invention ;
  • la figure 4 est une vue schématique en coupe du moteur selon le second mode de réalisation de l'invention ;
  • la figure 5 est une vue schématique en perspective d'un bloc d'un moteur selon un troisième mode de réalisation de l'invention.
Other features and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:
  • the figure 1 is a schematic perspective view of a block of an engine according to a prior art;
  • the figure 2 is a schematic perspective detail view of a block of an engine according to a first embodiment of the invention;
  • the figure 3 is a schematic perspective detail view of a block of an engine according to a second embodiment of the invention;
  • the figure 4 is a schematic sectional view of the engine according to the second embodiment of the invention;
  • the figure 5 is a schematic perspective view of a block of an engine according to a third embodiment of the invention.

Dans la description qui va suivre, des chiffres de référence identiques désignent des pièces identiques ou ayant des fonctions similaires.In the following description, like reference numerals designate like parts or having similar functions.

On a représenté sur la figure 1 un moteur 10 de véhicule automobile comportant un bloc 11, appelé communément "bloc cylindres", coiffé d'une culasse 13.We have shown on the figure 1 a motor vehicle engine 10 having a block 11, commonly called "cylinder block", capped with a cylinder head 13.

De manière connue, le bloc cylindres 11 comporte un premier circuit 12 interne de circulation d'un liquide de refroidissement qui est destiné par exemple à refroidir le bloc moteur 11 en permettant une circulation d'un liquide de refroidissement autour des cylindres 15 du moteur.In known manner, the cylinder block 11 comprises a first internal circuit 12 for circulating a cooling liquid which is intended for example to cool the engine block 11 by allowing a circulation of a coolant around the cylinders 15 of the engine.

De manière connue, le premier circuit interne 12 comporte un conduit interne d'alimentation 14 dont un orifice d'entrée 16 débouche dans une chambre de réception 18 aussi appelée "volute" qui est agencée dans le bloc 11 et qui est destinée à recevoir un rotor (non représenté) d'une pompe à eau équipant le moteur 10.In known manner, the first internal circuit 12 comprises an internal supply duct 14 including an inlet port 16 opens into a receiving chamber 18 also called "volute" which is arranged in the block 11 and which is intended to receive a rotor (not shown) of a water pump fitted to the engine 10.

De manière connue, la chambre de réception 18 est formée dans le bloc cylindres 11 et elle comporte dans une partie intermédiaire 20, agencée par exemple sensiblement au droit de l'axe "A" de rotation du rotor (non représenté) un orifice 22 d'alimentation destiné à permettre l'alimentation de la pompe à eau du moteur en liquide de refroidissement.In known manner, the receiving chamber 18 is formed in the cylinder block 11 and it comprises in an intermediate portion 20, arranged for example substantially in line with the axis "A" of rotation of the rotor (not shown) an orifice 22 d supply for allowing the cooling of the engine water pump.

Comme on peut le voir sur la figure 1, de manière connue, le niveau N1 de l'orifice 22 d'alimentation de la chambre 18 de réception est agencé au dessus du niveau N2 de l'orifice d'entrée 16 du conduit interne14 d'alimentation du premier circuit interne 12.As can be seen on the figure 1 , in known manner, the level N 1 of the supply port 22 of the receiving chamber 18 is arranged above the level N 2 of the inlet port 16 of the internal supply conduit 14 of the first internal circuit 12 .

Un inconvénient connu des moteurs thermiques 10 réalisés selon cette conception est lié précisément à la différence entre le niveau N1 de l'orifice d'alimentation 22 et le niveau N2 de l'orifice d'entrée 16 du premier circuit interne 12.A known disadvantage of the thermal engines 10 produced according to this design is related precisely to the difference between the level N 1 of the supply port 22 and the level N 2 of the inlet port 16 of the first internal circuit 12.

En effet, lorsque l'on désire remplir par gravité un tel circuit de refroidissement, du fait de la différence entre les niveaux N1 et N2, une poche d'air se forme dans la partie supérieure 24 de la chambre de réception 18 qui est agencée au dessus de l'orifice 22 d'alimentation de la chambre 18 de réception.Indeed, when it is desired to fill by gravity such a cooling circuit, because of the difference between the levels N 1 and N 2 , an air pocket is formed in the upper part 24 of the receiving chamber 18 which is arranged above the supply port 22 of the receiving chamber 18.

Cette poche d'air résiduelle interdit l'amorçage de la pompe à eau lorsque le moteur est lancé, ce qui peut avoir pour conséquence une détérioration de la pompe à eau ou un défaut de circulation du liquide de refroidissement au sein du circuit de refroidissement du véhicule.This residual air pocket prevents the priming of the water pump when the engine is started, which can result in a deterioration of the water pump or a lack of circulation of the coolant in the cooling circuit of the engine. vehicle.

II est donc nécessaire d'effectuer un remplissage sous pression du circuit de refroidissement pour réaliser un amorçage correct de la pompe à eau, et une purge du circuit en autre point, ce qui complique l'opération de remplissage du circuit.It is therefore necessary to perform a pressure filling of the cooling circuit to achieve a priming correct water pump, and purge the circuit at another point, which complicates the operation of filling the circuit.

Pour remédier à cet inconvénient l'invention propose un moteur 10 du type décrit précédemment, comportant des moyens de purge de la partie supérieure 24 de la chambre de réception 18 de la pompe à eau.To remedy this drawback, the invention proposes a motor 10 of the type described above, comprising means for purging the upper part 24 of the receiving chamber 18 of the water pump.

Dans ce but, l'invention propose un moteur 10 thermique du type décrit précédemment, caractérisé en ce qu'il comporte un conduit 26 supplémentaire de dégazage qui relie la partie supérieure 24 de la chambre 18 de réception de la pompe à eau à un élément du circuit de refroidissement du moteur pour permettre le remplissage complet par gravité de la chambre 18 de réception lors du remplissage du premier circuit interne 12.For this purpose, the invention proposes a thermal motor of the type described above, characterized in that it comprises an additional degassing conduit 26 which connects the upper part 24 of the chamber 18 for receiving the water pump to an element of the engine cooling circuit to allow complete gravity filling of the receiving chamber 18 during filling of the first internal circuit 12.

Selon un premier mode de réalisation de l'invention qui a été représenté à la figure 2, l'élément déterminé auquel est relié le conduit supplémentaire 26 est une chambre 28 qui est formée dans le bloc cylindres 11 et qui fait partie du premier circuit interne 12. Cette chambre 28 est par exemple une chambre périphérique entourant un cylindre 15 du bloc cylindres 11.According to a first embodiment of the invention which has been represented at figure 2 , the determined element to which is connected the additional conduit 26 is a chamber 28 which is formed in the cylinder block 11 and which is part of the first internal circuit 12. This chamber 28 is for example a peripheral chamber surrounding a cylinder 15 of the cylinder block 11.

Dans ce mode de réalisation, le conduit supplémentaire 26 est de préférence un conduit 26 formé dans le bloc cylindres 11, et ce conduit 26 est calibré de manière à permettre une fuite de liquide de refroidissement à partir de la chambre 18 de réception de la pompe à eau qui soit suffisant pour permettre une purge de la poche d'air, et qui soit néanmoins suffisamment restreint pour ne pas entraver le fonctionnement de la pompe à eau.In this embodiment, the additional duct 26 is preferably a duct 26 formed in the cylinder block 11, and this duct 26 is calibrated so as to allow leakage of cooling liquid from the chamber 18 for receiving the pump. water that is sufficient to allow purging of the air bag, and which is nevertheless small enough to not impede the operation of the water pump.

Selon un deuxième mode de réalisation de l'invention qui a été représenté sur les vues de détail de la figure 3 et de la figure 4, l'invention tire avantageusement profit de la présence d'une culasse 13 du moteur qui coiffe le bloc cylindres 11.According to a second embodiment of the invention which has been shown in the detail views of the figure 3 and some figure 4 , the invention advantageously takes advantage of the presence of a cylinder head 13 of the engine which caps the cylinder block 11.

Un joint de culasse 32 est agencé entre une face supérieure 34 du bloc cylindres 11 et une face inférieure 36 de la culasse 13.A cylinder head gasket 32 is arranged between an upper face 34 of the cylinder block 11 and a lower face 36 of the cylinder head 13.

Comme l'illustre la figure 4, le joint de culasse 32 comporte au moins un perçage 38 qui permet la communication du premier circuit interne 12 du bloc 11 avec un deuxième circuit interne 40 de la culasse 30.As illustrated by figure 4 , the cylinder head gasket 32 comprises at least one bore 38 which allows the communication of the first internal circuit 12 of the block 11 with a second internal circuit 40 of the cylinder head 30.

Dans cette configuration, l'élément déterminé auquel est relié le conduit supplémentaire 26 de dégazage est le perçage 38 du joint 32 de culasse.In this configuration, the determined element to which is connected the additional duct 26 degassing is the bore 38 of the gasket 32 of the cylinder head.

Par exemple, le conduit supplémentaire 26 de dégazage est formé dans le bloc cylindres 11 et il débouche dans la face supérieure 34 du bloc 11 par l'intermédiaire d'un orifice 30 qui est destiné à coïncider sensiblement avec le perçage 38 du joint de culasse 32.For example, the additional duct 26 for degassing is formed in the cylinder block 11 and opens into the upper face 34 of the block 11 via an orifice 30 which is intended to coincide substantially with the bore 38 of the cylinder head gasket 32.

D'une manière analogue au mode de réalisation précédent, comme l'illustre la figure 4, le conduit supplémentaire 26 peut être avantageusement calibré par le joint de culasse 32 lui-même, celui-ci pouvant obstruer plus ou moins l'extrémité du conduit supplémentaire 26 constituée par l'orifice 30 de manière à réguler le débit de liquide de refroidissement circulant dans ledit conduit supplémentaire 26, ceci afin de permettre un dégazage suffisant de la poche d'air contenue dans la chambre 18 de réception sans toutefois entraver le fonctionnement de la pompe à eau.In a similar manner to the previous embodiment, as illustrated by figure 4 , the additional duct 26 may advantageously be calibrated by the cylinder head gasket 32 itself, which may more or less obstruct the end of the additional duct 26 constituted by the orifice 30 so as to regulate the flow of coolant circulating in said additional duct 26, in order to allow sufficient degassing of the air bag contained in the receiving chamber 18 without however impeding the operation of the water pump.

Avantageusement, il sera compris que dans ce mode de réalisation, le conduit supplémentaire 26 sera de préférence venu de fonderie avec le bloc cylindres 11, ce qui permet de ne réaliser son calibrage que par l'intermédiaire du joint 32 de culasse sans nécessiter d'usinage particulier dudit conduit 26.Advantageously, it will be understood that in this embodiment, the additional duct 26 will preferably come from casting with the cylinder block 11, which allows to achieve its calibration only through the seal 32 of the cylinder head without requiring particular machining of said conduit 26.

II sera aussi compris que, en variante, le conduit supplémentaire 26 peut être, d'une manière analogue au premier mode de réalisation de l'invention, un conduit calibré qui débouche pleinement dans le perçage 38 du joint de culasse, le calibrage du conduit supplémentaire 26, résultant alors d'un usinage dudit conduit 26, et notamment de son orifice d'extrémité 30, dans le bloc cylindres 11.It will also be understood that, as a variant, the additional duct 26 may be, in a manner analogous to the first embodiment of the invention, a calibrated duct which opens fully into the bore 38 of the cylinder head gasket, the calibration of the duct additional 26, resulting then from a machining of said duct 26, and in particular of its end orifice 30, in the cylinder block 11.

Enfin, selon un troisième mode de réalisation de l'invention qui a été représenté à la figure 5, l'élément déterminé auquel est relié le conduit supplémentaire 26 de dégazage peut être un conduit externe 42 d'alimentation en liquide de refroidissement d'un organe du moteur, par exemple un refroidisseur d'huile 43, ledit conduit externe d'alimentation 42 étant accolé au bloc cylindres 11.Finally, according to a third embodiment of the invention which has been represented at figure 5 , the determined element to which is connected the additional venting duct 26 may be an external conduit 42 for supplying cooling liquid to an engine member, for example an oil cooler 43, said external supply duct 42 being attached to the cylinder block 11.

Dans cette configuration, au moins une partie 44 de communication du conduit externe 42 comporte une paroi indépendante du bloc cylindres et une paroi faisant partie du bloc cylindres 11, qui communique avec le conduit supplémentaire 26 par l'intermédiaire d'une lumière 50. Cette conception permet avantageusement de se dispenser d'un raccordement du conduit supplémentaire 26 avec la partie 44 de communication du conduit externe 42, tout en garantissant une étanchéité parfaite.In this configuration, at least one portion 44 of communication of the outer conduit 42 has a wall independent of the cylinder block and a wall forming part of the cylinder block 11, which communicates with the additional conduit 26 via a light 50. design advantageously eliminates the need for a connection of the additional conduit 26 with the communication portion 44 of the outer conduit 42, while ensuring a perfect seal.

Le conduit 42 externe est alors délimité dans sa partie de communication 44 par sa paroi indépendante et par sa paroi formée à l'extérieur du bloc cylindres 11.The external conduit 42 is then delimited in its communication part 44 by its independent wall and by its wall formed outside the cylinder block 11.

L'invention permet donc avantageusement de réaliser un dégazage de la chambre 18 de réception d'une pompe à eau d'un moteur 10 de véhicule automobile, ce qui permet d'effectuer le remplissage par gravité du circuit de refroidissement sans nécessiter de mise sous pression dudit circuit de refroidissement.The invention therefore advantageously makes it possible to degassing the chamber 18 for receiving a water pump from a motor vehicle engine 10, which makes it possible to perform the gravity filling of the cooling circuit without requiring pressure of said cooling circuit.

La maintenance d'un tel moteur 10 de véhicule automobile se trouve alors grandement facilitée.The maintenance of such a motor vehicle engine 10 is then greatly facilitated.

Claims (9)

  1. Heat engine (10) for a motor vehicle, of the type which comprises at least one cylinder block (11) which comprises a first internal circuit (12) for the circulation of a cooling liquid, of the type in which the first internal circuit (12) comprises an internal supply duct (14) an inlet orifice (16) of which opens into a reception chamber (18) or "volute", that is substantially cylindrical, of a rotor belonging to a water pump of the engine, which is formed in the block (11), said chamber (18) comprising in an intermediate portion (20) a supply orifice (22) the level (N1) of which is arranged above the level (N2) of the inlet orifice (16) of the internal supply duct (14) of the first internal circuit (12),
    characterized in that it comprises an additional venting duct (26) which connects an upper portion (24) of the reception chamber (18) or volute of the water pump to an element of the cooling circuit of the engine in order to allow the reception chamber (18) to be completely filled by gravity when the first internal circuit (12) is filled.
  2. Heat engine (10) according to the preceding claim,
    characterized in that the determined element is a chamber (28) which is formed in the cylinder block (11) and which forms part of the first internal circuit (12).
  3. Heat engine (10) according to the preceding claim, characterized in that the additional duct (26) is a calibrated duct (26) formed in the cylinder block (11).
  4. Heat engine (10) according to Claim 1, characterized in that the cylinder block (11) is capped by a cylinder head (13), a second internal circuit (40) for the circulation of a cooling liquid communicating with the first internal circuit (12) via at least one drill hole (38) formed in a cylinder head gasket (32), and in that the determined element is said drill hole (38) in the cylinder head gasket (32).
  5. Heat engine (10) according to the preceding claim, characterized in that the additional duct (26) is formed in the cylinder block (11) and opens into the drill hole (38) in the cylinder head gasket (32).
  6. Heat engine (10) according to the preceding claim, characterized in that the additional duct (26) is cast in one piece with the cylinder block (11) and is calibrated by the cylinder head gasket (32).
  7. Heat engine (10) according to Claim 5, characterized in that the additional duct (26) is a calibrated drill hole made in the cylinder block (11).
  8. Heat engine (10) according to Claim 1, characterized in that the determined element is an external duct (42) for supplying an engine member, notably an oil cooler (43), with cooling liquid, said external duct (42) being placed beside the block.
  9. Heat engine (10) according to the preceding claim, characterized in that the additional duct (26) is formed in the cylinder block (11) and opens into the external duct (42) via a hole (50).
EP07858535A 2006-11-20 2007-10-09 Thermal engine for an automotive vehicle comprising a water-pump bleeding duct Not-in-force EP2104780B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0654988A FR2908823B1 (en) 2006-11-20 2006-11-20 MOTOR VEHICLE THERMAL MOTOR COMPRISING A WATER PUMP DEGASSING PIPE
PCT/FR2007/052104 WO2008062116A1 (en) 2006-11-20 2007-10-09 Thermal engine for an automotive vehicle comprising a water-pump degassing duct

Publications (2)

Publication Number Publication Date
EP2104780A1 EP2104780A1 (en) 2009-09-30
EP2104780B1 true EP2104780B1 (en) 2010-04-28

Family

ID=38179737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07858535A Not-in-force EP2104780B1 (en) 2006-11-20 2007-10-09 Thermal engine for an automotive vehicle comprising a water-pump bleeding duct

Country Status (7)

Country Link
US (1) US8640658B2 (en)
EP (1) EP2104780B1 (en)
JP (1) JP2010510438A (en)
AT (1) ATE466176T1 (en)
DE (1) DE602007006237D1 (en)
FR (1) FR2908823B1 (en)
WO (1) WO2008062116A1 (en)

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DE102014207071B4 (en) 2014-04-11 2018-09-20 Volkswagen Aktiengesellschaft Internal combustion engine with a crankcase and a coolant pump

Also Published As

Publication number Publication date
WO2008062116A1 (en) 2008-05-29
EP2104780A1 (en) 2009-09-30
FR2908823A1 (en) 2008-05-23
US8640658B2 (en) 2014-02-04
US20100012056A1 (en) 2010-01-21
JP2010510438A (en) 2010-04-02
FR2908823B1 (en) 2009-01-30
DE602007006237D1 (en) 2010-06-10
ATE466176T1 (en) 2010-05-15

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