EP3056697A1 - Device and method for cleaning a circuit for sucking gases from a housing - Google Patents
Device and method for cleaning a circuit for sucking gases from a housing Download PDFInfo
- Publication number
- EP3056697A1 EP3056697A1 EP16152335.2A EP16152335A EP3056697A1 EP 3056697 A1 EP3056697 A1 EP 3056697A1 EP 16152335 A EP16152335 A EP 16152335A EP 3056697 A1 EP3056697 A1 EP 3056697A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- internal combustion
- combustion engine
- compressor
- gases
- 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.)
- Granted
Links
- 239000007789 gas Substances 0.000 title claims abstract description 52
- 238000004140 cleaning Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 69
- 238000007872 degassing Methods 0.000 claims abstract description 54
- 230000006835 compression Effects 0.000 claims abstract description 26
- 238000007906 compression Methods 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000005465 channeling Effects 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 3
- 241000861223 Issus Species 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 235000021183 entrée Nutrition 0.000 description 2
- 235000001954 papillon Nutrition 0.000 description 2
- 244000229285 papillon Species 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
Definitions
- the invention relates to the field of the automobile, and more specifically to the suction circuit of gases from a crankcase (also called breather) of an internal combustion engine fitted to the vehicles.
- a crankcase also called breather
- An internal combustion engine conventionally comprises a crankcase partially filled with oil for lubricating the moving parts of the engine.
- the engine comprises at least one cylinder provided with a combustion chamber in which takes place a combustion of an air / fuel mixture providing a piston, of complementary shape to the combustion chamber, a translational movement in the cylinder.
- the engine also includes a cylinder head, allowing the opening and closing of intake ports of the air / fuel mixture by intake valves and gas exhaust mouths resulting from combustion by exhaust valves, and a cylinder head cover.
- An outer dimension of the piston is smaller than an inner dimension of the cylinder to reduce a maximum of friction between the piston and the cylinder.
- the piston is provided, on an outer wall, with at least one segment licking a side wall of the cylinder to increase the seal between the piston and the cylinder and thus increase the engine power.
- crankcase gases and better known under the English name "blow-by gas”
- other parts of the engine such as the valves, are prone to leakage. These leaks cause an increase in the pressure in the crankcase and between the cylinder head and the cylinder head cover, reducing the performance of the engine and can damage seals and defuse a lubrication circuit of the internal combustion engine.
- the crankcase and the cylinder head cover, connected by the circuit of lubrication of the engine have a substantially identical internal pressure.
- the European document EP 1 327 753 describes a device for suction of the gases from the casing and an air intake circuit provided with a compressor connected to the combustion chamber of the cylinder.
- the suction device is connected to an inlet and an outlet of the compressor via a three-way valve.
- Such a device makes it possible to reduce the pressure induced by the gases coming from the crankcase in the internal combustion engine but does not solve a plug problem in said device.
- the reduction in pressure of the gases coming from the crankcase at the outlet of the engine creates a water vapor which, mixed with fine particles of oil present in the gases coming from the crankcase, forms a foam.
- this foam freezes in the suction device of the gases from the crankcase, due to the decrease in the engine output pressure added to a low outside temperature, and the device stops. suction.
- a first objective is to provide a device for extracting gases from a crankcase of an internal combustion engine capable of preventing a foam formed by the gases from the crankcase from clogging the suction device.
- a second objective is to provide a gas suction device from the housing easily adaptable to internal combustion engines and existing air intake circuits.
- a third objective is to provide a suction device gas from the casing simple and economical.
- a fourth objective is to propose a motor vehicle equipped with such a device for extracting gases from the crankcase.
- FIG. 1 On the figure 1 is represented a vehicle 1 automobile equipped with an internal combustion engine 2 connected to a circuit 3 for admission of air, a device 4 of gas suction from a housing 5 of the engine 2 and a circuit 6 d ' exhaust.
- the engine 2 comprising the housing 5 partially filled with oil for the lubrication of the engine 2.
- the engine 2 comprises at least one cylinder 7 defining a combustion chamber 8 in which takes place a combustion of an air mixture / fuel providing a piston 9 with a shape complementary to the combustion chamber 8 , a translational movement in the cylinder 7.
- the combustion chamber 8 is defined by an upper wall 10 of the piston 9, a side wall 11 of the cylinder 7 and a lower wall 12 of a yoke 13.
- a connecting rod 14 is integral with the piston 9 and a crankshaft 15, movable in a rotational movement relative to the piston 9 and the crankshaft 15.
- the yoke 13 allows the opening and closing at least one intake port 16 for admitting the air / fuel mixture by an inlet valve 17 and at least one gas outlet mouth 18 resulting from the combustion by an exhaust valve 19 t.
- the engine 2 also includes a cylinder head cover 20 to protect the intake valves 17 and exhaust 19 for their lubrication via a 21 lubrication circuit connecting the cylinder head cover 20 to the casing 5.
- An outer dimension P of the piston 9 is smaller than an internal dimension C of the cylinder 7 in order to reduce a maximum of friction between the piston 9 and the cylinder 7.
- the piston 9 is generally provided, on a outer wall 23 , three segments 23 licking the side wall 11 of the cylinder 7 for increasing the seal between the piston 9 and the cylinder 7 .
- the cylinder head cover 20 is connected to the suction device 4 for the gases coming from the casing 5 of the internal combustion engine 2 .
- the suction device 4 comprises a main degassing circuit 24 connected at a first end 25 to the valve cover 20.
- the suction device 4 also comprises a three-way valve 26 connected to a second end 27 of the circuit 24 of FIG. main degassing, a compression degassing circuit 28 and a cleaning degassing circuit 29 .
- the three-way valve 26 comprises a three-way position 30, the fluid path is shown in figure 3 , allowing the passage of fluids in the main degassing circuit 24 , the compression degassing circuit 28 and the cleaning degassing circuit 29 .
- the three-way valve 26 comprises a compression position 31 , whose fluid path is represented on the figure 4 , allowing the passage of fluids in the main degassing circuit 24 and the compression degassing circuit 28 .
- the three-way valve 26 also includes a cleaning position 32 , the fluid path of which is shown in FIG. figure 5 , allowing the passage of fluids in the main degassing circuit 24 and the degassing circuit 29 in cleaning.
- the air intake circuit 3 connected to the intake port 16 of the internal combustion engine 2 , comprising an inlet 33 of outside air, a compressor 34 and a throttle 35 placed between the compressor 34 and the mouth 16 engine inlet 2.
- the throttle 35 can occupy any position between a position 36 open, shown in figures 3 and 4 , allowing the passage of fluids between the compressor 34 and the internal combustion engine 2 , and a closed position 37 , shown in FIG. figure 5 , blocking the passage of fluids between the compressor 34 and the engine 2.
- the compression degassing circuit 28 is connected to an inlet 38 of the compressor 34 and the cleaning degassing circuit 29 is connected to an outlet 39 of the compressor 34.
- the exhaust circuit 6 is connected to the exhaust port 18 of the internal combustion engine 2 .
- the positons of the three-way valve 26 and the throttle valve 35 can be selected, for example, by mechanical means, electrical means or hydraulic or pneumatic means.
- the compressor 34 may be, for example, a mechanical compressor, an electric compressor or a hydraulic or pneumatic compressor.
- the throttle valve 35 is in the closed position blocking the passage of fluids between the compressor 34 and the intake port 16 of the engine 2.
- the gases coming from the crankcase 5 are no longer in position. overpressure in the housing 5 and the cylinder cover 20. Nevertheless, gases from the housing 5 stagnate in the suction device 4 may clog the latter by freezing at low outdoor temperatures.
- the compressor 34 is in operation and the three-way valve 26 is in the cleaning position 32 guiding the casing gases 5, from the outside air inlet 33 of the air intake circuit 3 to the cylinder cover 20 of the engine 2, via the compressor 34, the cleaning degassing circuit 29 and the main degassing circuit 24 , as shown in FIG. figure 5 .
- the controls of the means making it possible to select the positions of the three-way valve 26 and the throttle valve 35 as well as to control the operation of the engine 2 and the compressor 34 may be performed by a computer (not shown) which analyzes the conditions of the engine 2 for generating and sending commands to the three-way valve 26 , throttle valve 35, engine 2 and compressor 34.
- the air intake circuit 3 may comprise, alone or in combination, an air filter 40 connected to the inlet 33 of outside air, a turbocharger 41 placed at the outlet of the compressor 34, and a cooler 42 to air placed between the turbo compressor 34 and the throttle valve 35.
- the turbocharger 41 also belongs to the exhaust circuit 6 where exhaust gases start the turbocharger 41.
- the main degassing circuit 24 of the device 4 for extracting gases from the casing 5 of an internal combustion engine 2 can be connected to the casing 5 of the engine 2.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Dispositif (4) d'aspiration des gaz issus d'un carter (5) d'un moteur (2) à combustion interne comprenant :
- un circuit (24) de dégazage principal relié au moteur (2) et à un sélecteur (26) comportant une position de compression permettant le passage de fluides dans le circuit (24) de dégazage principal et un circuit (28) de dégazage en compression relié au sélecteur (26) et à une entrée (38) d'un compresseur (34) relié au moteur (2), et
- une vanne (35), disposé entre le compresseur (34) et le moteur (2), bloquant le lien entre le compresseur (34) et le moteur (2) lorsque le sélecteur (26) est dans une position de nettoyage permettant le passage des fluides dans un circuit (29) de dégazage en nettoyage relié au sélecteur (26) et à une sortie (39) du compresseur (34) et le circuit (24) de dégazage principal.
Device ( 4 ) for extracting gases from a casing ( 5 ) of an internal combustion engine ( 2 ) comprising:
a main degassing circuit ( 24 ) connected to the engine ( 2 ) and to a selector ( 26 ) comprising a compression position allowing the passage of fluids in the main degassing circuit ( 24 ) and a degassing circuit ( 28 ) in compression connected to the selector ( 26 ) and to an inlet ( 38 ) of a compressor ( 34 ) connected to the engine ( 2 ), and
a valve ( 35 ), arranged between the compressor ( 34 ) and the motor ( 2 ), blocking the link between the compressor ( 34 ) and the motor ( 2 ) when the selector ( 26 ) is in a cleaning position allowing the passing fluids through a cleaning degassing circuit ( 29 ) connected to the selector ( 26 ) and an outlet ( 39 ) of the compressor ( 34 ) and the main degassing circuit ( 24 ).
Description
L'invention a trait au domaine de l'automobile, et plus précisément au circuit d'aspiration des gaz issus d'un carter (aussi appelé reniflard) d'un moteur à combustion interne équipant les véhicules.The invention relates to the field of the automobile, and more specifically to the suction circuit of gases from a crankcase (also called breather) of an internal combustion engine fitted to the vehicles.
Un moteur à combustion interne comprend classiquement un carter partiellement rempli d'huile permettant la lubrification des organes en mouvement du moteur. Le moteur comprend au moins un cylindre muni d'une chambre de combustion dans laquelle se déroule une combustion d'un mélange air/carburant procurant à un piston, de forme complémentaire à la chambre de combustion, un mouvement de translation dans le cylindre. Le moteur comprend également une culasse, permettant l'ouverture et la fermeture de bouches d'admission du mélange air/carburant par des soupapes d'admission ainsi que de bouches d'échappement de gaz résultant de la combustion par des soupapes d'échappement, et un couvre-culasse.An internal combustion engine conventionally comprises a crankcase partially filled with oil for lubricating the moving parts of the engine. The engine comprises at least one cylinder provided with a combustion chamber in which takes place a combustion of an air / fuel mixture providing a piston, of complementary shape to the combustion chamber, a translational movement in the cylinder. The engine also includes a cylinder head, allowing the opening and closing of intake ports of the air / fuel mixture by intake valves and gas exhaust mouths resulting from combustion by exhaust valves, and a cylinder head cover.
Une dimension extérieure du piston est inférieure à une dimension intérieure du cylindre afin de réduire un maximum de frottements entre le piston et le cylindre. Cependant, dans un souci de rendement, le piston est muni, sur une paroi extérieure, d'au moins un segment venant lécher une paroi latérale du cylindre permettant d'accroître l'étanchéité entre le piston et le cylindre et ainsi d'augmenter la puissance du moteur.An outer dimension of the piston is smaller than an inner dimension of the cylinder to reduce a maximum of friction between the piston and the cylinder. However, for the sake of efficiency, the piston is provided, on an outer wall, with at least one segment licking a side wall of the cylinder to increase the seal between the piston and the cylinder and thus increase the engine power.
Néanmoins, cette étanchéité n'est pas parfaite et une partie des gaz, résultant de la combustion du mélange air/carburant, parvient dans le carter (appelés gaz issus du carter et plus connus sous la dénomination anglophone « gaz de blow-by »). De plus, d'autres parties du moteur, telles que les soupapes, sont sujettes à un défaut d'étanchéité. Ces défauts d'étanchéité provoquent une augmentation de la pression dans le carter ainsi qu'entre la culasse et le couvre-culasse, amoindrissant les performances du moteur et pouvant abimer des joints et désamorcer un circuit de lubrification du moteur à combustion interne. Le carter et le couvre-culasse, reliés par le circuit de lubrification du moteur, ont une pression interne sensiblement identique.Nevertheless, this seal is not perfect and part of the gases, resulting from the combustion of the air / fuel mixture, reaches the crankcase (called crankcase gases and better known under the English name "blow-by gas"). . In addition, other parts of the engine, such as the valves, are prone to leakage. These leaks cause an increase in the pressure in the crankcase and between the cylinder head and the cylinder head cover, reducing the performance of the engine and can damage seals and defuse a lubrication circuit of the internal combustion engine. The crankcase and the cylinder head cover, connected by the circuit of lubrication of the engine, have a substantially identical internal pressure.
Il est connu d'ajouter un dispositif d'aspiration des gaz issus du carter, relié à un couvre-culasse et à la bouche d'admission du moteur à combustion interne, permettant de diminuer la pression présente dans le carter et le couvre-culasse en guidant les gaz issus du carter vers la chambre de combustion du cylindre. Ainsi, le document européen
Un tel dispositif permet de réduire la pression induite par les gaz issus du carter dans le moteur à combustion interne mais ne résout pas un problème de bouchon dans ledit dispositif. En effet, la diminution de pression des gaz issus du carter en sortie du moteur créée une vapeur d'eau qui, mélangée à de fines particules d'huile présentes dans les gaz issus du carter, forme une mousse. Dans des conditions hivernales et après l'arrêt du moteur, cette mousse gèle dans le dispositif d'aspiration des gaz issus du carter, en raison de la diminution de la pression en sortie du moteur additionnée à une faible température extérieure, et bouche le dispositif d'aspiration.Such a device makes it possible to reduce the pressure induced by the gases coming from the crankcase in the internal combustion engine but does not solve a plug problem in said device. In fact, the reduction in pressure of the gases coming from the crankcase at the outlet of the engine creates a water vapor which, mixed with fine particles of oil present in the gases coming from the crankcase, forms a foam. In winter conditions and after stopping the engine, this foam freezes in the suction device of the gases from the crankcase, due to the decrease in the engine output pressure added to a low outside temperature, and the device stops. suction.
Un premier objectif est de proposer un dispositif d'aspiration des gaz issus d'un carter d'un moteur à combustion interne apte à empêcher une mousse formée par les gaz issus du carter de boucher le dispositif d'aspiration.A first objective is to provide a device for extracting gases from a crankcase of an internal combustion engine capable of preventing a foam formed by the gases from the crankcase from clogging the suction device.
Un second objectif est de proposer un dispositif d'aspiration des gaz issus du carter facilement adaptable aux moteurs à combustion interne et aux circuits d'admission d'air existants.A second objective is to provide a gas suction device from the housing easily adaptable to internal combustion engines and existing air intake circuits.
Un troisième objectif est de proposer un dispositif d'aspiration des gaz issus du carter simple et économique.A third objective is to provide a suction device gas from the casing simple and economical.
Un quatrième objectif est de proposer un véhicule automobile équipé d'un tel dispositif d'aspiration des gaz issus du carter.A fourth objective is to propose a motor vehicle equipped with such a device for extracting gases from the crankcase.
A cet effet, il est proposé, en premier lieu, un dispositif d'aspiration des gaz issus d'un carter d'un moteur à combustion interne, ce dispositif étant relié à un circuit d'admission d'air, comprenant un compresseur, lui-même relié au moteur à combustion interne, ce dispositif comprenant :
- un circuit de dégazage principal relié au moteur à combustion interne ;
- un circuit de dégazage en compression relié à une entrée du compresseur ;
- un circuit de dégazage en nettoyage relié à une sortie du compresseur ;
- un sélecteur relié au circuit de dégazage principal, au circuit de dégazage en compression et au circuit de dégazage en nettoyage, comportant une position de compression permettant le passage de fluides dans le circuit de dégazage principal et le circuit de dégazage en compression et une position de nettoyage pour permettre le passage des fluides dans le circuit de dégazage principal et le circuit de dégazage en nettoyage ;
- une vanne, disposée entre le compresseur et le moteur à combustion interne, bloquant le lien entre le compresseur et le moteur à combustion interne lorsque le sélecteur est en position de nettoyage pour permettre la purge des gaz issus du carter du circuit de dégazage principal.
- a main degassing circuit connected to the internal combustion engine;
- a compression degassing circuit connected to an inlet of the compressor;
- a cleaning degassing circuit connected to an outlet of the compressor;
- a selector connected to the main degassing circuit, to the compression degassing circuit and to the cleaning degassing circuit, comprising a compression position allowing the passage of fluids in the main degassing circuit and the compression degassing circuit and a position of cleaning to allow the passage of fluids in the main degassing circuit and the degassing circuit for cleaning;
- a valve, disposed between the compressor and the internal combustion engine, blocking the link between the compressor and the internal combustion engine when the selector is in the cleaning position to allow the purge of gases from the casing of the main degassing circuit.
Diverses caractéristiques supplémentaires peuvent être prévues, seules ou en combinaison :
- le sélecteur comprend une position trois voies permettant le passage des fluides dans le circuit de dégazage principal, le circuit de dégazage en compression et le circuit de dégazage en nettoyage ;
- la sélection de la position du sélecteur est réalisée par un moyen mécanique ;
- la sélection de la position du sélecteur est réalisée par un moyen électrique ;
- la sélection de la position du sélecteur est réalisée par un moyen hydraulique ou pneumatique ;
- le sélecteur est une vanne trois voies ;
- le circuit de dégazage principal est relié à un couvre-culasse du moteur à combustion interne.
- the selector comprises a three-way position permitting the passage of fluids in the main degassing circuit, the degassing circuit in compression and the degassing circuit for cleaning;
- the selector position is selected by mechanical means;
- the selection of the selector position is performed by an electrical means;
- the selector position is selected by hydraulic or pneumatic means;
- the selector is a three-way valve;
- the main degassing circuit is connected to a cylinder head cover of the internal combustion engine.
Il est proposé, en deuxième lieu, un procédé d'aspiration des gaz issus d'un carter mis en oeuvre par un dispositif tel que présenté ci-dessus, ce procédé comprenant les opérations consistant à :
- fournir de l'air au moteur à combustion interne via un circuit d'admission d'air comprenant un compresseur ;
- canaliser les gaz issus du carter vers une entrée du compresseur ;
- bloquer l'air arrivant au moteur à combustion interne, via la vanne du circuit d'admission d'air, en sortie du compresseur ;
- canaliser les gaz issus du carter depuis une sortie du compresseur vers un couvre-culasse ou un carter du moteur à combustion interne.
- supplying air to the internal combustion engine via an air intake circuit comprising a compressor;
- channeling the gases from the housing to an inlet of the compressor;
- blocking the air arriving at the internal combustion engine, via the valve of the air intake circuit, at the outlet of the compressor;
- channeling the gases from the crankcase from an outlet of the compressor to a cylinder head cover or crankcase of the internal combustion engine.
Il est proposé, en troisième lieu, un calculateur apte à réaliser un procédé d'aspiration des gaz issus d'un carter d'un moteur à combustion interne tel que présenté ci-dessus.It is proposed, thirdly, a computer adapted to perform a method of suction of gases from a crankcase of an internal combustion engine as presented above.
Il est proposé, en quatrième lieu, un véhicule automobile équipé d'un calculateur tel que présenté ci-dessus.It is proposed, fourthly, a motor vehicle equipped with a computer as presented above.
D'autres objets et avantages de l'invention apparaîtront à la lumière de la description de modes de réalisation, faite ci-après en référence aux dessins annexés dans lesquels :
- la
figure 1 représente un véhicule automobile comprenant un moteur à combustion interne, un circuit d'admission d'air, un dispositif d'aspiration des gaz issus d'un carter du moteur et un circuit d'échappement ; - la
figure 2 est une vue schématique d'un moteur à combustion interne ; - la
figure 3 est une vue schématique d'un moteur à combustion interne, d'un circuit d'admission d'air, d'un dispositif d'aspiration des gaz issus d'un carter du moteur et d'un circuit d'échappement, représentant la circulation des fluides lorsque le moteur est en fonctionnement et un compresseur du circuit d'admission d'air est à l'arrêt ; - la
figure 4 est une vue similaire à lafigure 3 , représentant la circulation des fluides lorsque le moteur et le compresseur sont en fonctionnement ; - la
figure 5 est une vue similaire à lafigure 3 , représentant la circulation des fluides lorsque le compresseur est en fonctionnement et le moteur est à l'arrêt ; - la
figure 6 est une vue schématique d'une variante du circuit d'admission d'air et du circuit d'échappement de lafigure 1 .
- the
figure 1 represents a motor vehicle comprising an internal combustion engine, an air intake circuit, a gas suction device from a motor housing and an exhaust circuit; - the
figure 2 is a schematic view of an internal combustion engine; - the
figure 3 is a schematic view of an internal combustion engine, an air intake circuit, a device for extracting gases from a motor housing and an exhaust circuit, representing the circulation of fluids when the engine is running and a compressor of the air intake circuit is stopped; - the
figure 4 is a view similar to thefigure 3 , representing the flow of fluids when the engine and the compressor are in operation; - the
figure 5 is a view similar to thefigure 3 , representing the flow of fluids when the compressor is running and the engine is stopped; - the
figure 6 is a schematic view of a variant of the air intake circuit and the exhaust circuit of thefigure 1 .
Sur la
Sur la
Une dimension P extérieure du piston 9 est inférieure à une dimension C intérieure du cylindre 7 afin de réduire un maximum de frottements entre le piston 9 et le cylindre 7. Cependant, dans un souci de rendement, le piston 9 est généralement muni, sur une paroi 22 extérieure, de trois segments 23 venant lécher la paroi 11 latérale du cylindre 7 permettant d'accroître l'étanchéité entre le piston 9 et le cylindre 7.An outer dimension P of the piston 9 is smaller than an internal dimension C of the
Le couvre-culasse 20 est relié au dispositif 4 d'aspiration des gaz issus du carter 5 du moteur 2 à combustion interne. Le dispositif 4 d'aspiration comprend un circuit 24 de dégazage principal relié, en une première extrémité 25, au couvre-culasse 20. Le dispositif 4 d'aspiration comprend également une vanne 26 trois voies reliée à une seconde extrémité 27 du circuit 24 de dégazage principal, à un circuit 28 de dégazage en compression et à un circuit 29 de dégazage en nettoyage. La vanne 26 trois voies comprend une position 30 trois voies, dont le parcours de fluides est représenté sur la
Sur les
Les positons de la vanne 26 trois voies ainsi que du papillon 35, représentées en grisés sur les figures, illustrent une absence de passage du fluide.The positons of the three-
Le circuit 6 d'échappement est relié à la bouche 18 d'échappement du moteur 2 à combustion interne.The
Les positons de la vanne 26 trois voies ainsi que du papillon 35 peuvent être sélectionnées, par exemple, par un moyen mécanique, un moyen électrique ou un moyen hydraulique ou pneumatique. Le compresseur 34 peut être, par exemple, un compresseur mécanique, un compresseur électrique ou un compresseur hydraulique ou pneumatique.The positons of the three-
Si le moteur 2 à combustion interne est en fonctionnement, les gaz issus du carter 5 sont en surpression dans le carter 5 et le couvre-culasse 20 du moteur 2. Les gaz issus du carter 5 doivent donc être évacués afin de réduire des risques de détérioration du moteur 2. Au moins deux situations différentes peuvent se présenter :
- lorsque le compresseur 34 n'est pas en fonctionnement, la vanne 26 trois voies se trouve en position 30 trois voies guidant les gaz de
carter 5, depuis le couvre-culasse 20 vers la bouche 16 d'admission du moteur 2, viale circuit 24 de dégazage principal,le circuit 29 de dégazage en nettoyage et lepapillon 35, comme représenté sur lafigure 3 ; - lorsque le compresseur 34 est en fonctionnement, la vanne 26 trois voies se trouve en position 31 de compression guidant les gaz de
carter 5, depuis le couvre-culasse 20 vers la bouche 16 d'admission du moteur 2, viale circuit 24 de dégazage principal,le circuit 28 de dégazage en compression, le compresseur 34 et lepapillon 35, comme représenté sur lafigure 4 .
- when the
compressor 34 is not operating, thevalve 26 three-way is in position 30, three-way guiding thecrankcase 5, since thecylinder head cover 20 to themouth 16 of intake of theengine 2 via thecircuit 24 , the cleaningdegassing circuit 29 and thethrottle valve 35, as shown in FIG.figure 3 ; - when the
compressor 34 is in operation, the three-way valve 26 is in the compression position 31 guiding thecrankcase gases 5, from thecylinder head cover 20 to theintake port 16 of theengine 2, via thedegassing circuit 24 principle, thecompression degassing circuit 28 , thecompressor 34 and thethrottle valve 35, as shown in FIG.figure 4 .
Si le fonctionnement du moteur 2 à combustion interne est arrêté, le papillon 35 se trouve en position fermé bloquant le passage des fluides entre le compresseur 34 et la bouche 16 d'admission du moteur 2. Les gaz issus du carter 5 ne sont plus en surpression dans le carter 5 et le couvre-culasse 20. Néanmoins, des gaz issus du carter 5 stagnent dans le dispositif 4 d'aspiration risquant de boucher ce dernier en gelant lors de faibles températures extérieures.If the operation of the
Pour éviter cela, le compresseur 34 est en fonctionnement et la vanne 26 trois voies se trouve en position 32 de nettoyage guidant les gaz de carter 5, depuis l'entrée 33 d'air extérieur du circuit 3 d'admission d'air vers le couvre-culasse 20 du moteur 2, via le compresseur 34, le circuit 29 de dégazage en nettoyage et le circuit 24 de dégazage principal, comme représenté sur la
Les commandes des moyens permettant de sélectionner les positions de la vanne 26 trois voies et du papillon 35 ainsi que de contrôler le fonctionnement du moteur 2 et du compresseur 34 peuvent être réalisées par un calculateur (non représenté) qui analyse les états du moteur 2 pour générer et envoyer des ordres à la vanne 26 trois voies, au papillon 35, au moteur 2 et au compresseur 34. The controls of the means making it possible to select the positions of the three-
Selon un mode de réalisation représenté sur la
Suivant un mode réalisation non représenté sur les figures, le circuit 24 de dégazage principal du dispositif 4 d'aspiration des gaz issus du carter 5 d'un moteur 2 à combustion interne peut être relié au carter 5 du moteur 2. According to an embodiment not shown in the figures, the
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1550779A FR3032225B1 (en) | 2015-02-02 | 2015-02-02 | DEVICE AND METHOD FOR CLEANING A GAS SUCTION CIRCUIT FROM A CARTER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3056697A1 true EP3056697A1 (en) | 2016-08-17 |
EP3056697B1 EP3056697B1 (en) | 2018-05-09 |
Family
ID=52779918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16152335.2A Active EP3056697B1 (en) | 2015-02-02 | 2016-01-22 | Device and method for cleaning a circuit for sucking gases from a housing |
Country Status (2)
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EP (1) | EP3056697B1 (en) |
FR (1) | FR3032225B1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1327753A1 (en) | 2001-12-24 | 2003-07-16 | Visteon Global Technologies, Inc. | Crank case ventilation system |
DE102006019634A1 (en) * | 2006-04-25 | 2007-10-31 | Mahle International Gmbh | Venting device for a supercharged internal combustion engine |
EP2505798A1 (en) * | 2011-04-01 | 2012-10-03 | Aisan Kogyo Kabushiki Kaisha | Blowby gas returning apparatus for engine with supercharger |
EP2549093A2 (en) * | 2011-07-19 | 2013-01-23 | MAHLE International GmbH | Combustion engine |
US20140318514A1 (en) * | 2013-04-25 | 2014-10-30 | Ford Global Technologies, Llc | System and method for gas purge control |
-
2015
- 2015-02-02 FR FR1550779A patent/FR3032225B1/en not_active Expired - Fee Related
-
2016
- 2016-01-22 EP EP16152335.2A patent/EP3056697B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1327753A1 (en) | 2001-12-24 | 2003-07-16 | Visteon Global Technologies, Inc. | Crank case ventilation system |
DE102006019634A1 (en) * | 2006-04-25 | 2007-10-31 | Mahle International Gmbh | Venting device for a supercharged internal combustion engine |
EP2505798A1 (en) * | 2011-04-01 | 2012-10-03 | Aisan Kogyo Kabushiki Kaisha | Blowby gas returning apparatus for engine with supercharger |
EP2549093A2 (en) * | 2011-07-19 | 2013-01-23 | MAHLE International GmbH | Combustion engine |
US20140318514A1 (en) * | 2013-04-25 | 2014-10-30 | Ford Global Technologies, Llc | System and method for gas purge control |
Also Published As
Publication number | Publication date |
---|---|
FR3032225A1 (en) | 2016-08-05 |
FR3032225B1 (en) | 2017-02-10 |
EP3056697B1 (en) | 2018-05-09 |
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