EP3500746B1 - Outer conduit of an outlet of a volute of a heat transfer pump of a heat engine of a vehicle - Google Patents

Outer conduit of an outlet of a volute of a heat transfer pump of a heat engine of a vehicle Download PDF

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Publication number
EP3500746B1
EP3500746B1 EP17754766.8A EP17754766A EP3500746B1 EP 3500746 B1 EP3500746 B1 EP 3500746B1 EP 17754766 A EP17754766 A EP 17754766A EP 3500746 B1 EP3500746 B1 EP 3500746B1
Authority
EP
European Patent Office
Prior art keywords
cylinder block
heat transfer
transfer fluid
component
circulation
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.)
Active
Application number
EP17754766.8A
Other languages
German (de)
French (fr)
Other versions
EP3500746A1 (en
Inventor
Michel Bartalini
Xavier Decomble
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.)
Renault SAS
Nissan Motor Co Ltd
Original Assignee
Renault SAS
Nissan Motor Co Ltd
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
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Publication of EP3500746A1 publication Critical patent/EP3500746A1/en
Application granted granted Critical
Publication of EP3500746B1 publication Critical patent/EP3500746B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P2003/027—Cooling cylinders and cylinder heads in parallel
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/143—Controlling of coolant flow the coolant being liquid using restrictions
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/08—Cabin heater
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/16—Outlet manifold
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream

Definitions

  • the present invention relates to an engine comprising a cylinder block.
  • the invention also relates to a vehicle, in particular a motor vehicle, comprising such an engine.
  • a heat engine usually comprises a cylinder block closed by a cylinder head.
  • the engine comprises a cooling circuit in which a heat transfer fluid is circulated by means of a pump and which, in turn, is cooled by passing through a radiator.
  • a pump conventionally comprises a volute, one outlet of which is connected by a conduit to an internal circuit of the cylinder block comprising cooling chambers allowing circulation of this fluid around the cylinders of the engine.
  • a general problem of such an engine is linked to the fact that the pump and part of the cooling circuit, the duct of which connecting the outlet of the volute to the internal circuit of the cylinder block, are conventionally arranged at the level of an external face of the engine and then has a size which is not suitable for the dimensions of the engine compartment of today's vehicles.
  • the present invention aims to overcome these drawbacks associated with the state of the art.
  • the invention relates to a motor according to claim 1.
  • the invention also relates to a vehicle, in particular a motor vehicle comprising such an engine.
  • a cylinder block 8 may, for reasons of lightening, be made of aluminum and for economic reasons and in large series may be made in a foundry of the high-pressure casting type.
  • this cylinder block 8 comprises an internal circuit 7 for the circulation of a heat transfer fluid otherwise called "cooling liquid" which is intended for example to cool the engine by allowing circulation of this fluid around the cylinders of the engine.
  • the internal circuit 7 comprises an internal supply conduit 15 formed by at least one cooling chamber, one inlet 6 of which comprising an inlet orifice, opens into a mounting cavity 14 of this cylinder block 8.
  • This mounting cavity 14 also includes an outlet 4 provided with an orifice of a volute 3 of a heat transfer fluid pump 2 for circulating this pressurized fluid in a cooling circuit of this engine.
  • This outlet 4 is an orifice 4 communicating with the cavity of the volute 3 of the pump 2.
  • a pump 2 is preferably arranged in a housing defined in the engine and in particular in a housing defined in the cylinder block 8 and this , so as to reduce the size of the motor.
  • the volute 3, also called the “high-pressure chamber” of the pump 2 is intended to receive a blade 17, or a turbine, contributing to the circulation of the pressurized fluid in the cooling circuit.
  • This vane 17 is mounted on one end 16 of a pump shaft passing through a pump body (not shown) on either side.
  • This volute 3 is formed in the cylinder block 8 and it comprises in a intermediate part, arranged for example substantially in line with the axis of the pump, a supply inlet (not shown) provided with an orifice intended to allow the pump 2 of the engine to be supplied with heat transfer fluid.
  • this cylinder block 8 also comprises an external duct 1 from the outlet 4 of the volute 3 of the pump 2 which is fixed to the external face 9 of this casing 8.
  • This external duct 1 can be a removable part which is attached to the outer face 9.
  • the outer conduit 1 comprises first and second components 5a, 5b which can be two separate parts which are assembled/connected to each other in a sealed manner. Alternatively, these first and second components 5a, 5b can together form a single piece.
  • This external duct 1 is arranged in the mounting cavity 14 while being mechanically and sealingly linked to the external face 9 of the cylinder block 8.
  • This mechanical connection is made from cooperation between fixing elements, in particular elements of screwing, with a connection zone 10.
  • This connection zone 10 is preferably defined at the level of a peripheral edge of this assembly cavity 14.
  • the first component 5a is capable of guiding the heat transfer fluid via a second channel 11b from the outlet 4 of the volute towards the inlet 6 of the internal circuit 7 for circulation of the heat transfer fluid defined in the cylinder block 8.
  • the first component 5a is capable of participating in guiding the heat transfer fluid from the outlet 4 of the volute towards the inlet 6 of the internal circuit 7.
  • This first component 5a of this external conduit 1 forms with the second component 5b a first channel 11a for circulation of the heat transfer fluid to at least one device of the cooling circuit.
  • a device is another consumer heat transfer fluid of the cooling circuit which can be, for example, a heat exchanger such as a heater or even an engine oil exchanger better known by the acronym "EMO" to evacuate the heat produced in the engine oil sump level.
  • the first channel 11a comprises an outlet 19 provided with an orifice.
  • This outlet 19 is included in a connecting part 18 of the second component 5b which has a generally cylindrical shape and on which part 18 one end of a connecting conduit, also called hoses, can be fixed in order to connect the external conduit 1 to the cooling circuit device.
  • a connecting conduit also called hoses
  • the internal circuit 7 can comprise a control element (not shown) for the circulation of the pressurized heat transfer fluid.
  • This control element placed downstream of the inlet 6, makes it possible to manage the flow at the level of the cooling chambers of the internal circuit 7.
  • This control element can be a solenoid valve, a controlled valve or even a thermostatic valve.
  • the external duct 1 is then adapted to a variable circulation of the heat transfer fluid for cooling the cylinder block 8. Indeed, when the control element is in a closed position of the internal circuit 7, the flow rate of the fluid passing through the second channel 11b described below and which continues to supply the outlet 19 so as not to interrupt the supply of fluid to the other consumers.
  • the first component 5a of this external conduit 1 is capable of guiding the heat transfer fluid from the outlet 4 of the volute 3 of the pump 2 towards the inlet 6 of the internal circuit 7 comprising the internal supply conduit 15 formed of at least a cooling chamber. More precisely, the first component 5a forms with the external face 9 of the casing 8 and in particular with the assembly cavity 14, the second channel 11b for the circulation of the heat transfer fluid towards this inlet 6 of the internal circuit 7.
  • the first component 5a of this external duct 1 comprises a passage zone 12 for the heat transfer fluid from the second channel 11b to the first channel 11a.
  • This passage zone 12 is preferably included on a part of this first component 5a which can be defined equidistant from the ends 24a, 24b of this component 5a visible on the figure 2 .
  • This passage zone 12 is ensured by openings 13 visible in a cross section of the passage zone 12 on the picture 3 which is essentially an inverted "U" shape.
  • the passage zone 12 comprises side walls 23 which each comprise an opening 13. These openings 13 participate in the passage of the heat transfer fluid from the second channel 11b to the first channel 11a.
  • this cylinder block 8 when the pump 2 performs a circulation of the coolant in the cooling circuit, the fluid is then evacuated from the pump 2 via the outlet 4 of the volute 3 to circulate under pressure in the second channel 11b in the direction of the arrows referenced 20. By thus circulating in this second channel 11b, this fluid is then led both to the internal circuit 7 defined in the cylinder block 8 via the inlet 6, and to at least one device of the cooling circuit by crossing the passage zone 12 in particular the openings 13 defined in this zone 12 in accordance with the direction of the arrows referenced 21.
  • Such an external conduit 1 thus makes it possible to channel the pressurized heat transfer fluid in the continuity of the volute 3 of the pump 2 to minimize pressure drop.
  • an external conduit 1 is easily mechanically connected to the external face 9 of the cylinder block 8 and is also compatible with cylinder block 8 manufactured according to various foundry processes and in particular according to a high casting type foundry process. pressure.

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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)

Description

La présente invention concerne un moteur comprenant un carter-cylindres.The present invention relates to an engine comprising a cylinder block.

L'invention concerne également un véhicule notamment un véhicule automobile, comportant un tel moteur.The invention also relates to a vehicle, in particular a motor vehicle, comprising such an engine.

Dans l'état de la technique, un moteur thermique comporte habituellement un carter-cylindres fermé par une culasse. Pour le bon fonctionnement du moteur, ces carters doivent être refroidis. Pour ce faire, le moteur comprend un circuit de refroidissement dans lequel un fluide caloporteur est mis en circulation au moyen d'une pompe et qui, à son tour, est refroidi en traversant un radiateur. Une telle pompe comprend classiquement une volute dont une sortie est reliée par un conduit à un circuit interne du carter-cylindres comportant des chambres de refroidissement permettant une circulation de ce fluide autour des cylindres du moteur.In the state of the art, a heat engine usually comprises a cylinder block closed by a cylinder head. For the proper functioning of the engine, these casings must be cooled. To do this, the engine comprises a cooling circuit in which a heat transfer fluid is circulated by means of a pump and which, in turn, is cooled by passing through a radiator. Such a pump conventionally comprises a volute, one outlet of which is connected by a conduit to an internal circuit of the cylinder block comprising cooling chambers allowing circulation of this fluid around the cylinders of the engine.

Un problème général d'un tel moteur, voir par exemple le moteur divulgué dans le document US5503117A , est lié au fait que la pompe et une partie du circuit de refroidissement dont le conduit reliant la sortie de la volute au circuit interne du carter-cylindres, sont classiquement agencées au niveau d'une face externe du moteur et présente alors un encombrement qui n'est pas adapté aux dimensions du compartiment moteur des véhicules d'aujourd'hui.A general problem of such an engine, see for example the engine disclosed in the document US5503117A , is linked to the fact that the pump and part of the cooling circuit, the duct of which connecting the outlet of the volute to the internal circuit of the cylinder block, are conventionally arranged at the level of an external face of the engine and then has a size which is not suitable for the dimensions of the engine compartment of today's vehicles.

En effet, les constructeurs automobiles et/ou les motoristes cherchent actuellement à réaliser au vue des dimensions de tels compartiments, des moteurs de plus en plus compacts et présentant néanmoins des performances améliorées en terme de puissance et/ou de rendement qui impliquent souvent un accroissement de contraintes thermiques au niveau de ces derniers.Indeed, car manufacturers and / or engine manufacturers are currently seeking to achieve in view of the dimensions of such compartments, more and more compact engines and nevertheless having improved performance in terms of power and / or efficiency which often involve an increase thermal stresses on them.

Dans l'optique de réduire cet encombrement, on connaît dans l'état de la technique une solution prévoyant une intégration de la pompe dans le carter-cylindres du moteur ainsi que du conduit reliant la sortie de volute de cette pompe au circuit interne du carter-cylindres.With a view to reducing this bulk, a solution is known in the state of the art providing for integration of the pump in the cylinder block of the engine as well as the conduit connecting the volute outlet of this pump to the internal circuit of the crankcase. -cylinders.

Toutefois, une telle solution ne peut être mise en oeuvre que dans un nombre limité de carter-cylindres car sa réalisation dépend intrinsèquement du procédé de fonderie utilisé pour la fabrication de ce carter-cylindres.However, such a solution can only be implemented in a limited number of cylinder blocks since its realization intrinsically depends on the foundry process used for the manufacture of this cylinder block.

La présente invention vise à pallier ces inconvénients liés à l'état de la technique.The present invention aims to overcome these drawbacks associated with the state of the art.

Dans ce dessein, l'invention porte sur un moteur selon la revendication 1.For this purpose, the invention relates to a motor according to claim 1.

Dans d'autres modes de réalisation :

  • le conduit externe comprend une deuxième composante formant avec la première composante un premier canal de circulation du fluide caloporteur vers au moins un dispositif du circuit de refroidissement ;
  • la première composante forme avec la face externe du carter un deuxième canal de circulation du fluide caloporteur vers ladite entrée du circuit interne de circulation du fluide caloporteur défini dans le carter-cylindres ;
  • la première composante comprend une zone de passage du fluide caloporteur du deuxième canal vers un premier canal ;
  • une zone de passage du fluide caloporteur du deuxième canal vers un premier canal comprend au moins une ouverture ;
  • la première composante et une deuxième composante sont deux pièces distinctes qui sont reliées l'une à l'autre de manière étanche ;
  • la première composante et une deuxième composante forment ensemble une pièce monobloc, et
  • le conduit externe est une pièce amovible et/ou une pièce rapportée.
In other embodiments:
  • the external duct comprises a second component forming with the first component a first circulation channel of the heat transfer fluid to at least one device of the cooling circuit;
  • the first component forms with the outer face of the housing a second channel for the circulation of the heat transfer fluid towards said inlet of the internal circuit for the circulation of the heat transfer fluid defined in the cylinder block;
  • the first component comprises a passage zone for the heat transfer fluid from the second channel to a first channel;
  • a passage zone for the heat transfer fluid from the second channel to a first channel comprises at least one opening;
  • the first component and a second component are two separate parts which are connected to each other in a sealed manner;
  • the first component and a second component together form a one-piece part, and
  • the outer duct is a removable part and/or an added part.

Dans d'autres modes de réalisation :

  • la face externe dudit carter comprend une cavité de montage dudit conduit externe ;
  • le carter-cylindres est fabriqué selon un procédé de fonderie de type coulée haute pression ;
  • le carter-cylindres est en aluminium ou en alliage d'aluminium ;
  • la cavité de montage forme une cavité notamment pourvue de deux orifices correspondant respectivement à la sortie de la volute de la pompe à fluide caloporteur et à l'entrée du circuit interne de circulation du fluide caloporteur défini dans le carter-cylindres, et
  • la cavité de montage comprend une zone de liaison au niveau de laquelle le conduit externe est relié mécaniquement et de manière étanche à la face externe du carter-cylindres.
In other embodiments:
  • the external face of said casing comprises a cavity for mounting said external duct;
  • the cylinder block is manufactured using a high-pressure casting type foundry process;
  • the cylinder block is made of aluminum or aluminum alloy;
  • the assembly cavity forms a cavity in particular provided with two orifices corresponding respectively to the outlet of the volute of the heat transfer fluid pump and at the inlet of the internal heat transfer fluid circulation circuit defined in the cylinder block, and
  • the assembly cavity comprises a connection zone at the level of which the outer duct is mechanically and sealingly connected to the outer face of the cylinder block.

L'invention concerne également un véhicule notamment un véhicule automobile comprenant un tel moteur.The invention also relates to a vehicle, in particular a motor vehicle comprising such an engine.

D'autres avantages et caractéristiques de l'invention apparaîtront mieux à la lecture de la description d'un mode de réalisation préféré qui va suivre, en référence aux figures, réalisé à titre d'exemple indicatif et non limitatif :

  • la figure 1 représente en perspective une vue en coupe d'une partie d'un carter-cylindres comprenant une pompe de fluide caloporteur et un conduit externe selon le mode de réalisation de l'invention ;
  • la figure 2 représente une vue en coupe d'une partie du carter-cylindres comprenant la pompe de fluide caloporteur et le conduit externe selon le mode de réalisation de l'invention, et
  • la figure 3 représente une vue en coupe transversale selon une ligne III-III d'une partie du conduit externe agencé sur une face externe du carter-cylindres comprenant une zone de passage du fluide caloporteur selon le mode de réalisation de l'invention.
Other advantages and characteristics of the invention will appear better on reading the description of a preferred embodiment which will follow, with reference to the figures, produced by way of indicative and non-limiting example:
  • there figure 1 shows in perspective a sectional view of part of a cylinder block comprising a coolant pump and an external duct according to the embodiment of the invention;
  • there figure 2 shows a cross-sectional view of part of the cylinder block including the coolant pump and the external conduit according to the embodiment of the invention, and
  • there picture 3 shows a cross-sectional view along a line III-III of a part of the external duct arranged on an external face of the cylinder block comprising a passage zone for the coolant fluid according to the 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, identical reference numerals designate identical parts or parts having similar functions.

On a représenté sur les figures 1 à 3, une partie d'un carter-cylindres 8 d'un moteur thermique d'un véhicule notamment un véhicule automobile comportant classiquement ce carter-cylindres 8 appelé communément « bloc cylindres », coiffé d'une culasse. Un tel carter-cylindres 8 peut-être, pour des raisons d'allègement, fabriqué en aluminium et pour des raisons économiques et de grande série peut être réalisé en fonderie de type coulée haute pression.We represented on the figures 1 to 3 , part of a cylinder block 8 of a combustion engine of a vehicle, in particular a motor vehicle, conventionally comprising this cylinder block 8 commonly called a "cylinder block", capped with a cylinder head. Such a cylinder block 8 may, for reasons of lightening, be made of aluminum and for economic reasons and in large series may be made in a foundry of the high-pressure casting type.

De manière connue, ce carter-cylindres 8 comporte un circuit interne 7 de circulation d'un fluide caloporteur autrement appelé « liquide de refroidissement » qui est destiné par exemple à refroidir le moteur en permettant une circulation de ce fluide autour des cylindres du moteur. Le circuit interne 7 comporte un conduit interne d'alimentation 15 formé d'au moins une chambre de refroidissement, dont une entrée 6 comprenant un orifice d'entrée, débouche dans une cavité de montage 14 de ce carter-cylindres 8.In a known manner, this cylinder block 8 comprises an internal circuit 7 for the circulation of a heat transfer fluid otherwise called "cooling liquid" which is intended for example to cool the engine by allowing circulation of this fluid around the cylinders of the engine. The internal circuit 7 comprises an internal supply conduit 15 formed by at least one cooling chamber, one inlet 6 of which comprising an inlet orifice, opens into a mounting cavity 14 of this cylinder block 8.

Cette cavité de montage 14 comprend également une sortie 4 pourvue d'un orifice d'une volute 3 d'une pompe à fluide caloporteur 2 pour la mise en circulation de ce fluide sous pression dans un circuit de refroidissement de ce moteur. Cette sortie 4 est un orifice 4 communiquant avec la cavité de la volute 3 de la pompe 2. Une telle pompe 2 est de préférence agencée dans un logement défini dans le moteur et en particulier dans un logement défini dans le carter-cylindres 8 et ce, de manière à réduire l'encombrement du moteur. La volute 3 également appelée « chambre de haute-pression » de la pompe 2 est destinée à recevoir une aube 17, ou une turbine, contribuant à la circulation du fluide sous pression dans le circuit de refroidissement. Cette aube 17 est montée sur une extrémité 16 d'un axe de pompe traversant de part et d'autre un corps de pompe (non représenté). Cette volute 3 est formée dans le carter-cylindres 8 et elle comporte dans une partie intermédiaire, agencée par exemple sensiblement au droit de l'axe de pompe une entrée d'alimentation (non représentée) pourvue d'un orifice destiné à permettre l'alimentation de la pompe 2 du moteur en fluide caloporteur.This mounting cavity 14 also includes an outlet 4 provided with an orifice of a volute 3 of a heat transfer fluid pump 2 for circulating this pressurized fluid in a cooling circuit of this engine. This outlet 4 is an orifice 4 communicating with the cavity of the volute 3 of the pump 2. Such a pump 2 is preferably arranged in a housing defined in the engine and in particular in a housing defined in the cylinder block 8 and this , so as to reduce the size of the motor. The volute 3, also called the “high-pressure chamber” of the pump 2, is intended to receive a blade 17, or a turbine, contributing to the circulation of the pressurized fluid in the cooling circuit. This vane 17 is mounted on one end 16 of a pump shaft passing through a pump body (not shown) on either side. This volute 3 is formed in the cylinder block 8 and it comprises in a intermediate part, arranged for example substantially in line with the axis of the pump, a supply inlet (not shown) provided with an orifice intended to allow the pump 2 of the engine to be supplied with heat transfer fluid.

Sur les figures 1 à 3, ce carter-cylindres 8 comprend également un conduit externe 1 de la sortie 4 de la volute 3 de la pompe 2 qui est fixé sur la face externe 9 de ce carter 8. Ce conduit externe 1 peut être une pièce amovible qui est rapportée sur la face externe 9. Le conduit externe 1 comprend des première et deuxième composantes 5a, 5b qui peuvent être deux pièces distinctes qui sont assemblées/reliées l'une avec l'autre de manière étanche. Dans une alternative, ces première et deuxième composantes 5a, 5b peuvent former ensemble une pièce monobloc.On the figures 1 to 3 , this cylinder block 8 also comprises an external duct 1 from the outlet 4 of the volute 3 of the pump 2 which is fixed to the external face 9 of this casing 8. This external duct 1 can be a removable part which is attached to the outer face 9. The outer conduit 1 comprises first and second components 5a, 5b which can be two separate parts which are assembled/connected to each other in a sealed manner. Alternatively, these first and second components 5a, 5b can together form a single piece.

Ce conduit externe 1 est agencé dans la cavité de montage 14 en étant lié mécaniquement et de manière étanche à la face externe 9 du carter-cylindres 8. Cette liaison mécanique est réalisée à partir d'une coopération entre des éléments de fixation notamment des éléments de vissage, avec une zone de liaison 10. Cette zone de liaison 10 est de préférence définie au niveau d'un bord périphérique de cette cavité de montage 14.This external duct 1 is arranged in the mounting cavity 14 while being mechanically and sealingly linked to the external face 9 of the cylinder block 8. This mechanical connection is made from cooperation between fixing elements, in particular elements of screwing, with a connection zone 10. This connection zone 10 is preferably defined at the level of a peripheral edge of this assembly cavity 14.

La première composante 5a est susceptible de guider le fluide caloporteur par un deuxième canal 11b de la sortie 4 de la volute vers l'entrée 6 du circuit interne 7 de circulation du fluide caloporteur défini dans le carter-cylindres 8. Autrement dit, la première composante 5a est susceptible de participer au guidage du fluide caloporteur de la sortie 4 de la volute vers l'entrée 6 du circuit interne 7. Cette première composante 5a de ce conduit externe 1 forme avec la deuxième composante 5b un premier canal 11a de circulation du fluide caloporteur vers au moins un dispositif du circuit de refroidissement. Un tel dispositif est un autre consommateur de fluide caloporteur du circuit de refroidissement qui peut être à titre d'exemple un échangeur de chaleur tel qu'un aérotherme ou encore à un échangeur d'huile moteur plus connu sous l'acronyme « EMO » pour y évacuer de la chaleur produite au niveau du carter d'huile moteur. Le premier canal 11a comprend une sortie 19 pourvue d'un orifice. Cette sortie 19 est comprise dans une partie de liaison 18 de la deuxième composante 5b qui présente une forme globalement cylindrique et sur laquelle partie 18 une extrémité d'un conduit de liaison, également appelées durites, peut être fixée afin de relier le conduit externe 1 au dispositif du circuit de refroidissement.The first component 5a is capable of guiding the heat transfer fluid via a second channel 11b from the outlet 4 of the volute towards the inlet 6 of the internal circuit 7 for circulation of the heat transfer fluid defined in the cylinder block 8. In other words, the first component 5a is capable of participating in guiding the heat transfer fluid from the outlet 4 of the volute towards the inlet 6 of the internal circuit 7. This first component 5a of this external conduit 1 forms with the second component 5b a first channel 11a for circulation of the heat transfer fluid to at least one device of the cooling circuit. Such a device is another consumer heat transfer fluid of the cooling circuit which can be, for example, a heat exchanger such as a heater or even an engine oil exchanger better known by the acronym "EMO" to evacuate the heat produced in the engine oil sump level. The first channel 11a comprises an outlet 19 provided with an orifice. This outlet 19 is included in a connecting part 18 of the second component 5b which has a generally cylindrical shape and on which part 18 one end of a connecting conduit, also called hoses, can be fixed in order to connect the external conduit 1 to the cooling circuit device.

Dans une alternative du conduit externe 1, le circuit interne 7 peut comprendre un élément de contrôle (non représenté) de la circulation du fluide caloporteur sous pression. Cet élément de contrôle placé en aval de l'entrée 6, permet de gérer le débit au niveau des chambres de refroidissement du circuit interne 7. Cet élément de contrôle peut être une électrovanne, une vanne pilotée ou encore vanne thermostatique. Dans cette configuration, le conduit externe 1 est alors adapté à une circulation variable du fluide caloporteur pour le refroidissement du carter-cylindres 8. En effet, lorsque l'élément de contrôle est dans une position de fermeture du circuit interne 7, le débit du fluide passant dans le deuxième canal 11b décrit par la suite et qui continue à alimenter la sortie 19 pour ne pas interrompre la fourniture en fluide des autres consommateurs.In an alternative to the external pipe 1, the internal circuit 7 can comprise a control element (not shown) for the circulation of the pressurized heat transfer fluid. This control element placed downstream of the inlet 6, makes it possible to manage the flow at the level of the cooling chambers of the internal circuit 7. This control element can be a solenoid valve, a controlled valve or even a thermostatic valve. In this configuration, the external duct 1 is then adapted to a variable circulation of the heat transfer fluid for cooling the cylinder block 8. Indeed, when the control element is in a closed position of the internal circuit 7, the flow rate of the fluid passing through the second channel 11b described below and which continues to supply the outlet 19 so as not to interrupt the supply of fluid to the other consumers.

La première composante 5a de ce conduit externe 1 est susceptible de guider le fluide caloporteur de la sortie 4 de la volute 3 de la pompe 2 vers l'entrée 6 du circuit interne 7 comportant le conduit interne d'alimentation 15 formé d'au moins une chambre de refroidissement. Plus précisément, la première composante 5a forme avec la face externe 9 du carter 8 et en particulier avec la cavité de montage 14, le deuxième canal 11b de circulation du fluide caloporteur vers cette entrée 6 du circuit interne 7.The first component 5a of this external conduit 1 is capable of guiding the heat transfer fluid from the outlet 4 of the volute 3 of the pump 2 towards the inlet 6 of the internal circuit 7 comprising the internal supply conduit 15 formed of at least a cooling chamber. More precisely, the first component 5a forms with the external face 9 of the casing 8 and in particular with the assembly cavity 14, the second channel 11b for the circulation of the heat transfer fluid towards this inlet 6 of the internal circuit 7.

La première composante 5a de ce conduit externe 1 comprend une zone de passage 12 du fluide caloporteur du deuxième canal 11b vers le premier canal 11a. Cette zone de passage 12 est comprise de préférence sur une partie de cette première composante 5a pouvant être définie à équidistance des extrémités 24a, 24b de cette composante 5a visibles sur la figure 2. Cette zone de passage 12 est assurée par des ouvertures 13 visibles dans une section transversale de la zone de passage 12sur la figure 3 qui a essentiellement la forme d'un « U » inversé. La zone de passage 12 comprend des parois latérales 23 qui comprennent chacune une ouverture 13. Ces ouvertures 13 participent au passage du fluide caloporteur du deuxième canal 11b vers le premier canal 11a.The first component 5a of this external duct 1 comprises a passage zone 12 for the heat transfer fluid from the second channel 11b to the first channel 11a. This passage zone 12 is preferably included on a part of this first component 5a which can be defined equidistant from the ends 24a, 24b of this component 5a visible on the figure 2 . This passage zone 12 is ensured by openings 13 visible in a cross section of the passage zone 12 on the picture 3 which is essentially an inverted "U" shape. The passage zone 12 comprises side walls 23 which each comprise an opening 13. These openings 13 participate in the passage of the heat transfer fluid from the second channel 11b to the first channel 11a.

Ainsi en référence aux figures 2 et 3, dans ce carter-cylindres 8, lorsque la pompe 2 effectue une mise en circulation du fluide caloporteur dans le circuit de refroidissement, le fluide est alors évacué de la pompe 2 via la sortie 4 de la volute 3 pour circuler sous pression dans le deuxième canal 11b selon le sens des flèches référencées 20. En circulant ainsi dans ce deuxième canal 11b, ce fluide est alors conduit à la fois vers le circuit interne 7 défini dans le carter-cylindres 8 via l'entrée 6, et vers au moins un dispositif du circuit de refroidissement en traversant la zone de passage 12 notamment les ouvertures 13 définies dans cette zone 12 conformément au sens des flèches référencées 21. Dans cette configuration, en traversant ainsi la zone de passage 12, le fluide passe alors du deuxième canal 11b vers le premier canal 11a jusqu'à être conduit vers le dispositif via la sortie référencée 19 et le conduit reliant la partie de liaison 18 de la deuxième composante 5b audit dispositif selon le sens de la flèche 22.So with reference to figures 2 and 3 , in this cylinder block 8, when the pump 2 performs a circulation of the coolant in the cooling circuit, the fluid is then evacuated from the pump 2 via the outlet 4 of the volute 3 to circulate under pressure in the second channel 11b in the direction of the arrows referenced 20. By thus circulating in this second channel 11b, this fluid is then led both to the internal circuit 7 defined in the cylinder block 8 via the inlet 6, and to at least one device of the cooling circuit by crossing the passage zone 12 in particular the openings 13 defined in this zone 12 in accordance with the direction of the arrows referenced 21. In this configuration, by thus crossing the passage zone 12, the fluid then passes from the second channel 11b to the first channel 11a until it is led to the device via the outlet referenced 19 and the conduit connecting the connecting part 18 of the second component 5b to said device in the direction of the arrow 22.

Un tel conduit externe 1 permet ainsi de canaliser le fluide caloporteur sous pression dans la continuité de la volute 3 de la pompe 2 pour minimiser la perte de charge. De plus, un tel conduit externe 1 est facilement reliable mécaniquement à la face externe 9 du carter-cylindres 8 et est en outre compatible avec des carter-cylindres 8 fabriqué selon différents procédés de fonderie et notamment selon un procédé de fonderie de type coulée haute pression.Such an external conduit 1 thus makes it possible to channel the pressurized heat transfer fluid in the continuity of the volute 3 of the pump 2 to minimize pressure drop. In addition, such an external conduit 1 is easily mechanically connected to the external face 9 of the cylinder block 8 and is also compatible with cylinder block 8 manufactured according to various foundry processes and in particular according to a high casting type foundry process. pressure.

Claims (8)

  1. Engine comprising a cylinder block (8), the cylinder block comprising a cooling circuit provided with a heat transfer fluid pump (2) and an external duct (1) of an outlet (4) of a volute (3) of the heat transfer fluid pump (2), characterized in that the heat transfer fluid pump (2) is arranged in a recess defined in the cylinder block, the external duct (1) is comprised on an external face (9) of the cylinder block (8) of the engine and has a first component (5a) capable of guiding the heat transfer fluid from said outlet (4) to an inlet (6) of an internal circuit (7) for circulation of the heat transfer fluid, which circuit is defined in the cylinder block (8).
  2. Engine according to the preceding claim, characterized in that the external duct (1) comprises a second component (5b) forming, with the first component (5a), a first channel (11a) for circulation of the heat transfer fluid to at least one device of the cooling circuit.
  3. Engine according to the preceding claim, characterized in that the first component (5a) and the second component (5b):
    - are two separate parts that are connected to one another in a sealed manner, or
    - together form a one-piece part.
  4. Engine according to any one of the preceding claims, characterized in that the first component (5a) forms, with the external face (9) of the cylinder block (8), a second channel (11b) for circulation of the heat transfer fluid to said inlet (6) of the internal circuit (7) for circulation of the heat transfer fluid, which circuit is defined in the cylinder block (8).
  5. Engine according to the preceding claim, characterized in that the first component (5a) comprises a zone (12) for passage of the heat transfer fluid from the second channel (11b) to the first channel (11a).
  6. Engine according to any one of the preceding claims, characterized in that the external duct (1) is a removable part that is attached to the external face (9).
  7. Engine according to one of the preceding claims, characterized in that:
    - the external face (9) of said cylinder block (8) comprises a cavity (14) for mounting said external duct (1), the mounting cavity (14) forming a cavity provided with two orifices corresponding respectively to the outlet (4) of the volute (3) of the heat transfer fluid pump (2) and to the inlet (6) of the internal circuit (7) for circulation of the heat transfer fluid, which circuit is defined in the cylinder block (8), the mounting cavity (14) comprising a connecting zone (10) at which the external duct (1) is mechanically connected, in a sealed manner, to the external face (9) of the cylinder block (8), and/or
    - the cylinder block (8) is manufactured according to a casting method of the high-pressure casting type, and/or
    - the cylinder block (8) is made of aluminium or aluminium alloy.
  8. Vehicle, in particular a motor vehicle, comprising an engine according to one of the preceding claims.
EP17754766.8A 2016-08-16 2017-08-03 Outer conduit of an outlet of a volute of a heat transfer pump of a heat engine of a vehicle Active EP3500746B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1657775A FR3055150A1 (en) 2016-08-16 2016-08-16 EXTERNAL CONDUIT OF AN OUTPUT OF A VOLUTE OF A PUMP WITH A HEAT PUMP FLUID OF A THERMAL MOTOR OF A VEHICLE
PCT/FR2017/052178 WO2018033669A1 (en) 2016-08-16 2017-08-03 Outer conduit of an outlet of a volute of a heat transfer pump of a heat engine of a vehicle

Publications (2)

Publication Number Publication Date
EP3500746A1 EP3500746A1 (en) 2019-06-26
EP3500746B1 true EP3500746B1 (en) 2023-07-05

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EP17754766.8A Active EP3500746B1 (en) 2016-08-16 2017-08-03 Outer conduit of an outlet of a volute of a heat transfer pump of a heat engine of a vehicle

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US (1) US10823043B2 (en)
EP (1) EP3500746B1 (en)
JP (1) JP6702508B2 (en)
CN (1) CN109642515B (en)
FR (1) FR3055150A1 (en)
WO (1) WO2018033669A1 (en)

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Publication number Priority date Publication date Assignee Title
US11525385B2 (en) * 2020-02-13 2022-12-13 Caterpillar Inc. Diverter fittings for cooling systems of an engine

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Publication number Priority date Publication date Assignee Title
US1754689A (en) * 1926-06-07 1930-04-15 Hupp Motor Car Corp Cooling system
GB1279132A (en) * 1969-04-02 1972-06-28 Chrysler United Kingdom Ltd Fo Improvements in or relating to internal combustion engines
DE3633261C1 (en) * 1986-09-30 1987-05-21 Bayerische Motoren Werke Ag Cast machine housing for liquid-cooled internal combustion engines with a V-shaped cylinder arrangement
DE4001140C1 (en) * 1990-01-17 1991-04-11 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Cylinder block for liquid cooled IC engine - has coolant channels in internal angle of V=shaped block
DE4326158C2 (en) * 1993-08-04 1995-05-11 Daimler Benz Ag Liquid guidance for an internal combustion engine
JP3157371B2 (en) * 1993-10-29 2001-04-16 ヤマハ発動機株式会社 Accessory mounting structure for automobile engine
JP3287961B2 (en) * 1993-10-29 2002-06-04 ヤマハ発動機株式会社 Engine cooling structure
JPH07127478A (en) * 1993-10-29 1995-05-16 Yamaha Motor Co Ltd Timing chain case structure for four-cycle engine
US5503117A (en) * 1993-10-29 1996-04-02 Yamaha Hatsudoki Kabushiki Kaisha Engine cooling system
DE19851232A1 (en) * 1998-11-06 2000-05-11 Bayerische Motoren Werke Ag Cast machine housing for a forced-circulation internal combustion engine with a lubrication system, in particular with cylinders arranged in a row
JP2001132468A (en) * 1999-11-11 2001-05-15 Kawasaki Heavy Ind Ltd Coolant passage structure of v type liquid-cooled engine
US8739756B2 (en) * 2011-03-23 2014-06-03 GM Global Technology Operations LLC Engine assembly with engine block-integrated cooling system
TWI553215B (en) * 2013-06-28 2016-10-11 山葉發動機股份有限公司 Saddle-type vehicle

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JP2019526013A (en) 2019-09-12
JP6702508B2 (en) 2020-06-03
WO2018033669A1 (en) 2018-02-22
FR3055150A1 (en) 2018-02-23
CN109642515A (en) 2019-04-16
CN109642515B (en) 2020-12-15
US20200191040A1 (en) 2020-06-18
US10823043B2 (en) 2020-11-03
EP3500746A1 (en) 2019-06-26

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