EP1966473B1 - Motor vehicle thermal management device - Google Patents
Motor vehicle thermal management device Download PDFInfo
- Publication number
- EP1966473B1 EP1966473B1 EP06820321A EP06820321A EP1966473B1 EP 1966473 B1 EP1966473 B1 EP 1966473B1 EP 06820321 A EP06820321 A EP 06820321A EP 06820321 A EP06820321 A EP 06820321A EP 1966473 B1 EP1966473 B1 EP 1966473B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiator
- main
- section
- port
- temperature
- 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.)
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- 238000001816 cooling Methods 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 52
- 238000004891 communication Methods 0.000 claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims description 25
- 238000011084 recovery Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 20
- 239000003570 air Substances 0.000 description 14
- 239000002826 coolant Substances 0.000 description 9
- 235000021183 entrée Nutrition 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000256815 Apocrita Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Images
Classifications
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- 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
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
- F28D1/0443—Combination of units extending one beside or one above the other
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- 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
- F01P2060/02—Intercooler
Definitions
- this patent document notably describes interconnection means between the main circuit and the secondary circuit, formed by two 3-way valves and a 4-way valve, which make it possible to integrate the main radiator in the low temperature loop.
- this patent document proposes to cut the main radiator into two sections. One of the two sections may be used to assist the coolant cooling of the low-power secondary circuit of the engine, and this radiator section will be returned to the high-power main circuit of the engine. The switchover of this section of a cooling loop to the other loop is done through interconnection means formed either of two 4-way valves located on each side of the main radiator, or a single 6-way valve.
- the present invention provides a simple and compact thermal management device with a single four-way valve system, in particular to use part or all of the main radiator for cooling the liquid of the secondary loop at moderate speed and load. of the engine.
- the device according to the invention has a high caloric evacuation capacity of the integrated components on the secondary circuit for cooling at low temperature, in particular the EGR / liquid gas radiator, the charge air / liquid radiator, the air conditioning condenser, and / or electrotechnical components in the case of a hybrid vehicle.
- the thermal management device according to the invention makes it possible to meet the cooling needs of the EGR gases, in particular for high EGR gas rates, and the cooling requirements of the supercharged air for a high thermal power, as in the case of a double supercharging.
- the main circuit comprises a main thermostat on the first main radiator pipe to cut, in a closed position, and allow, in an open position, the flow of fluid towards the main radiator.
- the cooling device advantageously comprises a bypass line connecting the first main radiator pipe, upstream of the main thermostat, to a heat recovery thermostat, mounted on the connecting pipe from the first inlet of the second section to the low loop.
- said thermostat placing in communication the second section with the low temperature loop in an open position, for said operation in degraded mode and in normal mode with reinforced and very reinforced cooling, or the bypass line with the low temperature loop in a closed position, for the recovery of calories in a cold start mode operation and / or in heating mode of the passenger compartment when the engine stops, operation in which the valve system communicates the first channel and the third channel .
- the device according to the invention thus enables the recovery of calories from the secondary circuit, including radiators RAS and EGR to accelerate the temperature rise of the engine during the cold start of the engine, and the recovery of calories stored in the engine and the coolant for maintaining the heating of the engine cockpit when stopping the engine, as for example, on hybrid vehicles incorporating the Stop and Start function (stopping the engine during a prolonged stop in traffic jam or during a long stop where the driver would remain in the vehicle and would require heating).
- the main radiator is formed of two separate exchangers each forming a section of the main radiator, each exchanger having two manifolds, each manifold comprises a section inlet, the manifolds provided with the first inputs are for example connected by a tube forming the fluidic communication means.
- the low temperature loop advantageously incorporates a charge / liquid air radiator, called RAS radiator, and a recirculated / liquid exhaust gas radiator, called EGR radiator.
- the EGR radiator and / or the radiator RAS comprise upstream downstream with respect to the gaseous flows passing through them, at least one high temperature part, connected to the main circuit, and a low temperature part connected to the secondary circuit. for cooling at two temperature levels of said gas flows.
- the use of such radiators at two temperature levels allows efficient cooling of the charge air and / or EGR gas, especially in case of high EGR gas recirculation rate, and / or in case of extension of the zone (engine torque regime) for recirculating gases at high speeds and heavy loads. They also allow operation in cold start mode in the absence of bypass line associated with a heat recovery thermostat.
- the thermal management device comprises two cooling circuits, a first high-temperature cooling circuit, called primary or high temperature 1, at a conventional temperature level of the order of 90 to 100 ° C, a second low temperature cooling circuit, said secondary or low temperature 3, at a relatively low temperature level, of the order of 50 to 60 ° C, and a 4-way valve system, designated by the reference 4, allowing to make communications between the main circuit and the secondary circuit.
- a first high-temperature cooling circuit called primary or high temperature 1
- secondary or low temperature 3 at a relatively low temperature level, of the order of 50 to 60 ° C
- a 4-way valve system designated by the reference 4
- a main thermostat 17 for example of single-acting wax type or pilot-type, or a main thermostatic valve ground two-way, is interposed on the first radiator pipe 111, to cut in a closed position or allow in a position open the circulation of fluid in the first radiator pipe towards the main radiator, in order to regulate the temperature of the liquid HT.
- the secondary circuit 3 comprises a secondary low temperature loop 31 which comprises a pipe secondary radiator 311 on which are mounted a secondary radiator or low-temperature radiator 32, and a secondary pump 33, for example electric, for the circulation of the coolant coolant low temperature, said liquid BT.
- the secondary loop includes a charge air / liquid cooler 34, said RAS exchanger, and an EGR / liquid gas cooler 35, said EGR exchanger, these two exchangers being for example connected in parallel to the low temperature loop downstream of the secondary radiator, as illustrated on the figure 1 .
- the main radiator 2 consists of a single exchanger cut into a first heat exchange section 21 and a second heat exchange section 22.
- the first section comprises a first inlet 21a for its connection to the first radiator pipe main 112 and a second input 21b for its connection to the second main radiator pipe.
- the second section includes a first input 22a for its connection to the low temperature loop and a second input 22b for its connection to one of the channels of the valve system, as described below.
- the main radiator comprises tubes equipped with cooling fins, a first manifold 23 and a second manifold 24 located at the ends of the tubes.
- the first manifold is separated into an upper portion 23a, an intermediate portion 23b and a lower portion 23c, by a first and. a second separating bulkhead, respectively 25 and 26.
- the second box is separated into an upper portion 24a and a lower portion 24b, by a honeycomb partition 27 disposed at the same level as the second partition 26.
- the 4-way valve system comprises a first channel 41 connected by a connecting pipe 114 to the second main radiator pipe 113, a second channel 42 connected by a pipe 115 connecting to the second inlet 22b of the second radiator section main, a third channel 43 connected to the secondary radiator duct 311 downstream of the secondary pump and the RAS and EGR exchangers, and a fourth channel connected to the low temperature radiator pipe upstream of the secondary pump, the valve system so being interspersed on the low temperature loop through its third and fourth lanes.
- the first inlet 22a is connected by a connecting pipe 38 to the low temperature loop, upstream of the secondary pump with respect to the direction of fluid flow, between the secondary pump and the valve system.
- the main radiator comprises a first section with a single pass ( Figure 4A ), its first input being moved to the second manifold, and the first partition 25 above is removed.
- the radiator 102 with two sections 121 and 122 then comprises a first box 123 separated in two by a bulkhead 126, and a second box 124 separated as previously in two by a honeycomb partition 127, the upper parts 124a and 123b of the second box and the first box, respectively, respectively comprise the first input 121a and the second input 121b of the first section, the lower portions 123c and 124b of the first box and the second box respectively comprise the second input 122b and the first input 122a of the second section.
- the figure 5 illustrates operation in cold start mode, with heat recovery from the RAS and EGR exchangers.
- the main thermostat 17, and the heat recovery thermostats 36 and 5 are in the closed position to cut the fluid passage in the first section and the second section of the main radiator and in the secondary radiator, so that the fluid is not cooled by the ambient air, and the valve system communicates the track 41 and the track 42 to connect the secondary radiator pipe downstream of the EGR and RAS exchangers to the second radiator pipe 114 and thus put in communication the two loops.
- the figure 6 illustrates a cold start mode operation similar to the previous one, with in addition a cooling by the low temperature radiator.
- the fluid of the low temperature loop can reach a temperature level which exceeds the maximum set temperature for the cooling of the heat exchangers RAS and EGR, the first heat recovery thermostat 36 goes into the open position for that the fluid is cooled in the low temperature radiator before entering the RAS and EGR exchangers.
- the figure 8 illustrates a normal mode operation at moderate speed and load with a very strong cooling of the secondary circuit, the main thermostat in the closed position.
- the valve system is controlled to establish the communication between the channels 41 and 43 and between the channels. 43 and 42 and thus pass the liquid BT low temperature loop both in the second section and in the second pass of the first section defined at the intermediate portion 23b of the first manifold.
- the fluid BT passes through the second section of the main radiator via the connecting pipe 115, and the first section via the connecting pipe 114 and the second radiator pipe 113 connected to the second inlet 21b.
- the figure 9 illustrates normal mode operation at high speed and load.
- the entire main radiator should be used for cooling.
- the valve system 4 communicates between the channels 41 and 42, and between the channels 43 and 44, the two circuits are independent.
- the main thermostat With the main thermostat in the open position, the fluid HT enters the first section of the main radiator through the first inlet 21a. Part of the fluid arriving in the second box spring from the first section through its second inlet 21b, the other part passes through the second section via the honeycomb partition to emerge through the second inlet 22b.
- the cooled fluid exiting the first section through the second radiator pipe 113 and exiting the second section through the connecting pipe 115 and the connecting pipe 114 then passes into the engine.
- the flow of fluid in the low temperature loop, with or without passage in the low temperature radiator is provided by the secondary pump. In this mode, the position of the thermostat 5 does not affect the independence of the two loops.
- the liquid arriving in the upper part of the second header After stopping the engine, and thus stopping the main pump, the liquid arriving in the upper part of the second header, after having crossed the first exchange section, enters the lower part of the second box via the honeycomb partition, passes through the connecting pipe 38, with its heat recovery thermostat in the open position, then goes into the loop 'low temperature, where it is cooled by the secondary radiator before joining the pipe of radiator 113 via the connecting line 114 for cooling the engine and the turbocharger bearing.
- the secondary pump can also be used after the engine is shut down to circulate the liquid in the air heater to ensure the thermal comfort of the passenger compartment.
- the figure 13 represents a simplified embodiment of the device of the figure 1 , in which the bypass line 18 and the thermostat 5 are removed, the second inlet of the second section being simply connected to the low temperature loop by the connecting pipe 38.
- This device is more economical and simpler, has the same functionalities that the device of the figure 1 , except for maintaining cabin heating mode ( figure 12 ) and two cold start modes ( Figures 5 and 6 ) above.
- the figure 14 represents an alternative embodiment of the second embodiment in which the EGR and / or RAS exchangers are first cooled with the HT liquid of the high temperature loop, then with the BT liquid of the low temperature loop.
- the exchangers RAS 134 and EGR 135 are each separated into two parts for cooling its gas flow at two temperature levels.
- Each exchanger comprises a low temperature portion connected to the secondary circuit via an inlet 134a, 135a and an output 134b, 135b, and a high temperature portion connected to the main circuit via an input 134c, 135c and an output 134d, 135d.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Motor Or Generator Cooling System (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Air-Conditioning For Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
La présente invention concerne un dispositif de gestion thermique pour un véhicule automobile équipé d'un moteur thermique, notamment d'un moteur à combustion interne suralimenté.The present invention relates to a thermal management device for a motor vehicle equipped with a heat engine, in particular a supercharged internal combustion engine.
Pour réduire la consommation et les émissions polluantes des véhicules automobiles, diverses évolutions technologiques ont été proposées par les constructeurs dans le domaine de la combustion, de la suralimentation, et des traitements de gaz d'échappement. Ces évolutions nécessitent la recherche de nouveaux dispositifs de gestion thermique pour évacuer une quantité de plus en plus importante de chaleur du moteur, notamment à forte vitesse et forte charge, et pour refroidir l'air de suralimentation du moteur, une partie des gaz d'échappement avant leur réintroduction dans la chambre de combustion, appelés gaz d'échappement recirculés ou gaz EGR (de l'anglais Exhaust Gas Recirculation), et le cas échéant, le condenseur de la boucle de climatisation de l'habitacle et les composants électrotechniques pour les véhicules hybrides.To reduce the consumption and polluting emissions of motor vehicles, various technological developments have been proposed by manufacturers in the field of combustion, supercharging, and exhaust gas treatments. These developments require the search for new thermal management devices to evacuate an increasing amount of heat from the engine, especially at high speed and high load, and to cool the engine air supercharging, some of the gases of the engine. exhaust systems before their reintroduction into the combustion chamber, referred to as recirculated exhaust gas or EGR (Exhaust Gas Recirculation) gas, and, if applicable, the air-conditioning air conditioning condenser of the passenger compartment and the electrotechnical components for hybrid vehicles.
Les dispositifs de gestion thermique comprennent classiquement un circuit principal de refroidissement conventionnel du moteur thermique, équipé d'une pompe principale et d'un radiateur principal à haute température, et un circuit secondaire de refroidissement à basse température, équipé d'une pompe secondaire et d'un radiateur secondaire fonctionnant à basse température pour évacuer l'ensemble des calories de l'air de suralimentation et des gaz EGR.The thermal management devices conventionally comprise a conventional cooling main circuit of the heat engine, equipped with a main pump and a high temperature main radiator, and a secondary low temperature cooling circuit, equipped with a secondary pump and a secondary radiator operating at low temperatures to evacuate all the calories from the charge air and the EGR gases.
Pour l'air de suralimentation, en particulier dans le cas d'une double suralimentation avec deux turbocompresseurs ou un turbocompresseur et un compresseur mécanique, la température du liquide de refroidissement doit être de plus en plus faible pour satisfaire des normes d'émissions de polluants de plus en plus sévères. Par ailleurs, on constate une augmentation du taux de gaz EGR, celui-ci pouvant rester élevé même pour des forts régimes et charges du moteur thermique, ce qui augmente la quantité de chaleur à évacuer par le circuit secondaire. Le radiateur secondaire ne pouvant évacuer une quantité de chaleur importante compte tenu du faible écart de la température entre le liquide de refroidissement et l'air ambiant, il est très difficile de maintenir le liquide de refroidissement à basse température dans le circuit secondaire. L'augmentation de la taille du radiateur secondaire aurait un impact négatif sur le radiateur haute température puisqu'il diminuerait la vitesse d'air globale sur la valise de refroidissement et augmenterait la température d'air en amont du radiateur haute température. Pour pouvoir évacuer les calories du circuit principal, il serait alors nécessaire d'augmenter également la taille du radiateur principal qui présente déjà une surface frontale très importante.For charge air, especially in the case of double turbocharging turbochargers or turbochargers and mechanical compressors, the temperature of the coolant must be weaker and weaker to meet ever more stringent pollutant emission standards. Furthermore, there is an increase in the EGR gas rate, it can remain high even for high speeds and loads of the engine, which increases the amount of heat to be removed by the secondary circuit. The secondary radiator can not evacuate a large amount of heat given the small temperature difference between the coolant and the ambient air, it is very difficult to keep the coolant at low temperature in the secondary circuit. Increasing the size of the secondary radiator would have a negative impact on the high temperature radiator since it would decrease the overall air velocity on the cooling case and increase the air temperature upstream of the high temperature radiator. To be able to evacuate the calories of the main circuit, it would then be necessary to increase also the size of the main radiator which already has a very large frontal area.
Pour le refroidissement du circuit secondaire, il a été proposé dans le document brevet
Ce dispositif est satisfaisant lorsque la puissance cédée dans le circuit secondaire est relativement faible, mais nécessite soit plusieurs vannes, soit une seule vanne à 6 voies avec un nombre important de conduites qui rend les circuits complexes et onéreux, et crée des pertes de charge supplémentaires impliquant une augmentation de la puissance et du coût des pompes de circulation. Par ailleurs le refroidissement du circuit secondaire peut s'avérer insuffisant lorsque le taux de gaz EGR augmente.This device is satisfactory when the power transferred in the secondary circuit is relatively low, but requires either several valves or a single 6-way valve with a large number of pipes that makes the circuits complex and expensive, and creates additional pressure drops involving an increase in the power and cost of circulation pumps. Furthermore, the cooling of the secondary circuit may be insufficient when the EGR gas rate increases.
Le but de la présente invention est de proposer un dispositif de gestion thermique palliant les inconvénients précités, qui permettent un refroidissement efficace du circuit secondaire à basse température, tout en restant simple de conception.The object of the present invention is to provide a thermal management device overcoming the aforementioned drawbacks, which allow efficient cooling of the secondary circuit at low temperature, while remaining simple design.
A cet effet, la présente invention a pour objet un dispositif de gestion thermique pour véhicule automobile équipé d'un moteur thermique, notamment d'un moteur à combustion interne suralimenté, comprenant
- un circuit principal de refroidissement à haute température, comprenant une boucle haute température équipée d'un radiateur principal à haute température et de moyens de circulation d'un liquide de refroidissement entre ledit radiateur principal et le moteur, la surface d'échange du radiateur principal étant scindée en au moins une première section, avec une première et une deuxième entrée pour la circulation de fluide, et une seconde section avec une première entrée et une deuxième entrée pour la circulation de fluide,
- un circuit secondaire de refroidissement à basse température, comprenant une boucle basse température équipée d'un radiateur secondaire à basse température et de moyens de circulation d'un liquide de refroidissement à basse température, et
- des moyens d'interconnexion reliant le circuit principal et le circuit secondaire, lesdits moyens d'interconnexion permettant d'intégrer les deux sections du radiateur principal au circuit principal ou d'intégrer la première section au circuit principal et la deuxième section au circuit secondaire,
- la première entrée et la deuxième entrée de la première section du radiateur principal sont connectées respectivement à une première conduite de radiateur principal et une deuxième conduite de radiateur principal de la boucle haute température, la première entrée de la deuxième section étant connectée à la boucle basse température, en amont du radiateur secondaire, et reliée à la première entrée de la première section par des moyens de communication fluidique,
- lesdits moyens d'interconnexion comprenant un système de vannes à quatre voies connecté par une première voie à la deuxième conduite de radiateur principal, par une deuxième voie à la deuxième entrée de la deuxième section du radiateur principal, et intercalé sur la boucle basse température, en aval du radiateur secondaire par une troisième voie, et en amont du radiateur secondaire par une quatrième voie, la première entrée de la deuxième section étant reliée à la boucle basse température entre le radiateur secondaire et la quatrième voie du système de vannes,
- ledit système de vanne étant apte
- à mettre en communication d'une part la première voie et la deuxième voie et d'autre part la troisième voie et la quatrième voie pour séparer le circuit principal et le circuit secondaire, en intégrant la première et la deuxième section du radiateur principal dans la boucle haute température, dans un fonctionnement en mode normal à régime et charge élevés,
- à mettre en communication la troisième voie et la deuxième voie pour intégrer la deuxième section du radiateur principal dans la boucle basse température, dans un fonctionnement en mode normal à régime et charge modérés, avec refroidissement renforcé du circuit secondaire, et
- à mettre en communication la troisième voie avec la première voie et la deuxième voie pour intégrer la deuxième section et au moins en partie la première section du radiateur principal dans la boucle basse température, dans un fonctionnement en mode normal à régime et charte modérés, avec refroidissement très renforcé du circuit secondaire.
- a high temperature cooling main circuit, comprising a high temperature loop equipped with a high temperature main radiator and means for circulating a cooling liquid between said main radiator and the engine, the exchange surface of the main radiator being split into at least a first section, with a first and a second inlet for fluid circulation, and a second section with a first inlet and a second inlet for fluid circulation,
- a secondary low temperature cooling circuit, comprising a low temperature loop equipped with a secondary radiator at low temperature and means for circulating a coolant at low temperature, and
- interconnection means connecting the main circuit and the secondary circuit, said interconnection means making it possible to integrate the two sections of the main radiator with the main circuit or to integrate the first section with the main circuit and the second section with the secondary circuit,
- the first inlet and the second inlet of the first section of the main radiator are respectively connected to a first main radiator pipe and a second main radiator pipe of the high temperature loop, the first inlet of the second section being connected to the bottom loop. temperature, upstream of the secondary radiator, and connected to the first inlet of the first section by means of fluid communication,
- said interconnection means comprising a four-way valve system connected by a first path to the second main radiator pipe, by a second path to the second inlet of the second section of the main radiator, and interposed on the low temperature loop, downstream of the secondary radiator by a third channel, and upstream of the secondary radiator by a fourth channel, the first inlet of the second section being connected to the low temperature loop between the secondary radiator and the fourth channel of the valve system,
- said valve system being suitable
- communicating on the one hand the first lane and the second lane and on the other hand the third lane and the fourth lane to separate the main circuit and the secondary circuit, by integrating the first and the second section of the main radiator in the high temperature loop, in normal mode operation at high speed and load,
- communicating the third channel and the second channel to integrate the second section of the main radiator into the low temperature loop, in normal mode operation at moderate speed and load, with enhanced cooling of the secondary circuit, and
- to port the third channel with the first channel and the second channel to integrate the second section and at least partly the first section of the main radiator into the low temperature loop, in a normal mode operation with moderate speed and chart, with very reinforced cooling of the secondary circuit.
La présente invention propose un dispositif de gestion thermique simple de conception et compact avec un seul système de vanne à quatre voies permettant notamment d'utiliser une partie ou la totalité du radiateur principal pour le refroidissement du liquide de la boucle secondaire à régime et charge modérés du moteur thermique. Le dispositif selon l'invention présente une forte capacité d'évacuation des calories des composants intégrés sur le circuit secondaire pour un refroidissement à basse température, notamment le radiateur gaz EGR/liquide, le radiateur air de suralimentation/liquide, le condenseur de climatisation, et/ou les composants électrotechniques dans le cas d'un véhicule hybride. Le dispositif de gestion thermique selon l'invention permet de répondre aux besoins de refroidissement des gaz EGR, notamment pour des forts taux de gaz EGR, et aux besoins de refroidissement de l'air suralimenté pour une forte puissance thermique, comme dans le cas d'une double suralimentation.The present invention provides a simple and compact thermal management device with a single four-way valve system, in particular to use part or all of the main radiator for cooling the liquid of the secondary loop at moderate speed and load. of the engine. The device according to the invention has a high caloric evacuation capacity of the integrated components on the secondary circuit for cooling at low temperature, in particular the EGR / liquid gas radiator, the charge air / liquid radiator, the air conditioning condenser, and / or electrotechnical components in the case of a hybrid vehicle. The thermal management device according to the invention makes it possible to meet the cooling needs of the EGR gases, in particular for high EGR gas rates, and the cooling requirements of the supercharged air for a high thermal power, as in the case of a double supercharging.
Selon une particularité, le système de vanne est apte à mettre en communication la première voie avec les deuxième et troisième voies pour un refroidissement du moteur thermique à l'aide du radiateur secondaire, dans un mode de fonctionnement en mode dégradé. Le dispositif selon l'invention permet ainsi de répondre aux besoins de refroidissement du moteur à forte puissance, avec un refroidissement maximal du moteur thermique.According to a particularity, the valve system is able to put the first channel in communication with the second and third ways for cooling the heat engine using the secondary radiator, in a mode of operation in degraded mode. The device according to the invention thus makes it possible to meet the cooling needs of the high-power engine, with maximum cooling of the heat engine.
Selon une autre particularité, le système de vanne est apte à mettre en communication la première voie et la troisième voie pour refroidir le moteur thermique et d'éventuels organes montés sur la boucle haute température, tel que le palier de turbocompresseur, lors de l'arrêt à chaud du moteur, dans un fonctionnement en mode refroidissement du moteur.According to another particularity, the valve system is able to put in communication the first channel and the third channel for cooling the heat engine and any members mounted on the high temperature loop, such as the turbocharger bearing, during the hot shutdown of the engine, in a cooling mode operation of the engine.
Selon un mode de réalisation, le circuit principal comprend un thermostat principal sur la première conduite de radiateur principal pour couper, dans une position fermée, et autoriser, dans une position ouverte, la circulation de fluide en direction du radiateur principal. Le dispositif de refroidissement comprend avantageusement une conduite de dérivation reliant la première conduite de radiateur principal, en amont du thermostat principal, à un thermostat de récupération de chaleur, monté sur la conduite de raccordement de la première entrée de la deuxième section à la boucle basse température, ledit thermostat mettant en communication soit la deuxième section avec la boucle basse température dans une position ouverte, pour lesdits fonctionnement en mode dégradé et en mode normal avec refroidissement renforcé et très renforcé, soit la conduite de dérivation avec la boucle basse température dans une position fermée, pour la récupération de calories dans un fonctionnement en mode démarrage à froid et/ou en mode chauffage de l'habitacle à l'arrêt du moteur, fonctionnement dans lequel le système de vanne met en communication la première voie et la troisième voie. Le dispositif selon l'invention permet ainsi la récupération de calories du circuit secondaire, notamment des radiateurs RAS et EGR pour accélérer la montée en température du moteur lors du démarrage à froid du moteur, et la récupération de calories stockées dans le moteur et le liquide de refroidissement pour le maintien du chauffage de l'habitacle lors de l'arrêt du moteur thermique, comme par exemple, sur des véhicules hybrides intégrant la fonction Stop and Start (arrêt du moteur lors d'un arrêt prolongé en embouteillage ou lors d'un arrêt long où le conducteur resterait dans le véhicule et nécessiterait du chauffage).According to one embodiment, the main circuit comprises a main thermostat on the first main radiator pipe to cut, in a closed position, and allow, in an open position, the flow of fluid towards the main radiator. The cooling device advantageously comprises a bypass line connecting the first main radiator pipe, upstream of the main thermostat, to a heat recovery thermostat, mounted on the connecting pipe from the first inlet of the second section to the low loop. temperature, said thermostat placing in communication the second section with the low temperature loop in an open position, for said operation in degraded mode and in normal mode with reinforced and very reinforced cooling, or the bypass line with the low temperature loop in a closed position, for the recovery of calories in a cold start mode operation and / or in heating mode of the passenger compartment when the engine stops, operation in which the valve system communicates the first channel and the third channel . The device according to the invention thus enables the recovery of calories from the secondary circuit, including radiators RAS and EGR to accelerate the temperature rise of the engine during the cold start of the engine, and the recovery of calories stored in the engine and the coolant for maintaining the heating of the engine cockpit when stopping the engine, as for example, on hybrid vehicles incorporating the Stop and Start function (stopping the engine during a prolonged stop in traffic jam or during a long stop where the driver would remain in the vehicle and would require heating).
Avantageusement, la boucle basse température comprend une conduite de dérivation du radiateur basse température connectée en amont du radiateur secondaire à un thermostat de récupération de chaleur.Advantageously, the low temperature loop comprises a bypass line of the low temperature radiator connected upstream of the secondary radiator to a heat recovery thermostat.
Selon un mode de réalisation, ledit système de vanne comprend quatre vannes à 2 voies pilotées : une première vanne reliant les première et troisième voies, une deuxième vanne reliant les deuxième et troisième voies, une troisième vanne reliant les première et deuxième voies et une quatrième vanne reliant les troisième et quatrième voies.According to one embodiment, said valve system comprises four controlled two-way valves: a first valve connecting the first and third channels, a second valve connecting the second and third channels, a third valve connecting the first and second channels and a fourth valve; valve connecting the third and fourth lanes.
Selon un mode de réalisation, le radiateur principal est formé d'un échangeur unique avec une première et une deuxième boîte collectrice, la première et la deuxième section étant définies par une cloison étanche et une cloison en nid d'abeille positionnées respectivement dans la première et la deuxième boîte collectrice, ladite cloison en nid d'abeille constituant lesdits moyens de communication fluidique. Les parties inférieures des première et deuxième boîtes collectrices comprennent respectivement la deuxième et la première entrée de la deuxième section. Les parties supérieures de la première et la deuxième boîte collectrice comprennent respectivement la deuxième et la première entrée de la première section, ou la première boîte comprend une seconde cloison étanche définissant une partie supérieure et une partie intermédiaire munie respectivement de la première et de la deuxième entrée de la première section, pour constituer une première section à deux passes.According to one embodiment, the main radiator is formed of a single exchanger with a first and a second header, the first and second sections being defined by a bulkhead and a honeycomb partition respectively positioned in the first and the second manifold, said honeycomb partition constituting said fluid communication means. The lower portions of the first and second manifolds respectively comprise the second and first entrances of the second section. The upper portions of the first and second manifolds respectively comprise the second and the first inlet of the first section, or the first box comprises a second bulkhead defining an upper portion and an intermediate portion respectively provided with the first and second inlet of the first section, to form a first section with two passes.
En variante, le radiateur principal est formé de deux échangeurs séparés formant chacun une section du radiateur principal, chaque échangeur comportant deux boîtes collectrices, chaque boîte collectrice comprend une entrée de section, les boîtes collectrices munies des premières entrées sont par exemple reliées par un tube formant les moyens de communication fluidique.Alternatively, the main radiator is formed of two separate exchangers each forming a section of the main radiator, each exchanger having two manifolds, each manifold comprises a section inlet, the manifolds provided with the first inputs are for example connected by a tube forming the fluidic communication means.
La boucle basse température intègre avantageusement un radiateur air de suralimentation/liquide, dit radiateur RAS, et un radiateur gaz d'échappement recirculés/liquide, dit radiateur EGR. Selon un mode de réalisation, le radiateur EGR et/ou le radiateur RAS comprennent d'amont en aval par rapport aux flux gazeux les traversant, au moins une partie haute température, reliée au circuit principal, et une partie basse température reliée au circuit secondaire pour un refroidissement à deux niveaux de température desdits flux gazeux. L'utilisation de tels radiateurs à deux niveaux de température permet un refroidissement efficace de l'air de suralimentation et/ou des gaz EGR, notamment en cas de taux de recirculation de gaz EGR élevée, et/ou en cas d'extension de la zone (régime-couple moteur) de recirculation des gaz à forts régimes et fortes charges. Ils permettent en outre un fonctionnement en mode démarrage à froid en l'absence de conduite de dérivation associé à un thermostat de récupération de chaleur.The low temperature loop advantageously incorporates a charge / liquid air radiator, called RAS radiator, and a recirculated / liquid exhaust gas radiator, called EGR radiator. According to one embodiment, the EGR radiator and / or the radiator RAS comprise upstream downstream with respect to the gaseous flows passing through them, at least one high temperature part, connected to the main circuit, and a low temperature part connected to the secondary circuit. for cooling at two temperature levels of said gas flows. The use of such radiators at two temperature levels allows efficient cooling of the charge air and / or EGR gas, especially in case of high EGR gas recirculation rate, and / or in case of extension of the zone (engine torque regime) for recirculating gases at high speeds and heavy loads. They also allow operation in cold start mode in the absence of bypass line associated with a heat recovery thermostat.
L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre de modes de réalisation particuliers actuellement préférés de l'invention, en référence au dessin schématique annexé, sur lequel :
- la
figure 1 représente une vue schématique d'un dispositif de gestion thermique pour un véhicule automobile équipé d'un moteur à combustion interne suralimenté selon un premier mode de réalisation de l'invention ; - la
figure 2 représente un exemple de réalisation du système de vanne à quatre voies ; - les
figures 3A et 3B illustrent deux variantes de réalisation de l'insertion de la cloison du nid d'abeille dans le radiateur principal ; - les
figures 4A et 4B représentent deux vues schématiques d'un radiateur principale pour le dispositif de lafigure 1 selon deux variantes de réalisation ; - les
figures 5 à 12 représentent des vues schématiques du dispositif de gestion thermique de lafigure 1 illustrant différents modes de fonctionnement ; - la
figure 13 représente une vue schématique d'un dispositif de gestion thermique selon un deuxième mode de réalisation ; et, - la
figure 14 représente une vue schématique d'un dispositif de gestion thermique selon une variante du deuxième mode de réalisation de lafigure 13 .
- the
figure 1 is a schematic view of a thermal management device for a motor vehicle equipped with a supercharged internal combustion engine according to a first embodiment of the invention; - the
figure 2 represents an embodiment of the four-way valve system; - the
Figures 3A and 3B illustrate two alternative embodiments of the insertion of the honeycomb partition into the main radiator; - the
Figures 4A and 4B represent two schematic views of a main radiator for the device of thefigure 1 according to two variants; - the
Figures 5 to 12 represent schematic views of the thermal management device of thefigure 1 illustrating different modes of operation; - the
figure 13 is a schematic view of a thermal management device according to a second embodiment; and, - the
figure 14 represents a schematic view of a thermal management device according to a variant of the second embodiment of thefigure 13 .
En référence à la
Le circuit principal comprend classiquement, en série sur une boucle secondaire ou haute température 11, le moteur thermique à combustion interne 9, un radiateur principal ou radiateur haute température 2, et une pompe principale 13, par exemple une pompe mécanique entraînée par le moteur, pour la circulation dans le circuit d'un liquide caloporteur de refroidissement haute température, dit liquide HT. La boucle haute température comprend une conduite de moteur 111 sur laquelle est montée le moteur 9 et la pompe principale 13, une première conduite de radiateur principal 112 et une seconde conduite de radiateur principal 113 reliant le radiateur principal à la conduite de moteur 111, respectivement en aval et en amont du moteur par rapport au sens de circulation du liquide HT au niveau du moteur.The main circuit conventionally comprises, in series on a secondary or
Le circuit principal comprend un vase d'expansion 14 permettant le remplissage et la régulation en pression du circuit, un radiateur de chauffage de l'habitacle ou aérotherme 15, et un palier de turbocompresseur 16, chacun d'entre eux étant monté en pont entre la première et la deuxième conduite de radiateur principal. Ce circuit principal peut intégrer d'autres organes du groupe moteur propulseur pour les refroidir de manière conventionnelle à haute température, notamment les échangeurs eau/huile de lubrification du moteur et de la boîte de vitesse automatique.The main circuit comprises an
Un thermostat principal 17, par exemple de type à cire à simple effet ou de type piloté, ou une vanne thermostatique principale pelotée à deux voies, est intercalé sur la première conduite de radiateur 111, pour couper dans une position fermée ou autoriser dans une position ouverte la circulation de fluide dans la première conduite de radiateur en direction du radiateur principal, afin de réguler la température du liquide HT.A
Le circuit secondaire 3 comprend une boucle secondaire basse température 31 qui comporte une conduite de radiateur secondaire 311 sur laquelle sont montées un radiateur secondaire ou radiateur basse température 32, et une pompe secondaire 33, par exemple électrique, pour la circulation du liquide caloporteur de refroidissement basse température, dit liquide BT. La boucle secondaire intègre un refroidisseur air de suralimentation/liquide 34, dit échangeur RAS, et un refroidisseur gaz EGR/liquide 35, dit échangeur EGR, ces deux échangeurs étant par exemple montés en parallèle sur la boucle basse température en aval du radiateur secondaire, tel qu'illustré sur la
Le radiateur principal 2 est constitué d'un échangeur unique découpé en une première section d'échange de chaleur 21 et une deuxième section d'échange de chaleur 22. La première section comprend une première entrée 21a pour sa connexion à la première conduite de radiateur principal 112 et une deuxième entrée 21b pour sa connexion à la deuxième conduite de radiateur principal. La deuxième section comprend une première entrée 22a pour sa connexion à la boucle basse température et une deuxième entrée 22b pour sa connexion à l'une des voies du système de vanne, tel que décrit ci-après.The
Dans le mode de réalisation illustré à la
Le système de vannes à 4 voies comprend une première voie 41 reliée par une canalisation de raccordement 114 à la deuxième conduite de radiateur principal 113, une deuxième voie 42 reliée par une conduite 115 de raccordement à la deuxième entrée 22b de la deuxième section du radiateur principal, une troisième voie 43 connectée à la conduite de radiateur secondaire 311 en aval de la pompe secondaire et des échangeurs RAS et EGR, et une quatrième voie connectée à la canalisation de radiateur basse température en amont de la pompe secondaire, le système de vanne étant ainsi intercalé sur la boucle basse température par ses troisième et quatrième voies.The 4-way valve system comprises a
La première entrée 22a est reliée par une conduite de raccordement 38 à la boucle basse température, en amont de la pompe secondaire par rapport au sens de circulation de fluide, entre la pompe secondaire et le système de vannes.The
Le circuit principal comprend en outre une conduite de dérivation 18 reliant la première conduite de radiateur principal, en amont du thermostat principal 17, à la boucle basse température via un deuxième thermostat de récupération de chaleur à trois voies 5. Ce deuxième thermostat est monté en série par deux de ses voies sur la conduite de raccordement 38, la conduite de dérivation étant connectée à sa troisième voie. En dessous d'une température de consigne, ce thermostat de récupération de chaleur est dans une position dite fermée dans laquelle la conduite de dérivation est en communication avec la boucle basse température. Au-dessus de cette température de consigne, ce thermostat est dans une position ouverte dans laquelle la deuxième section est en communication avec la boucle basse température.The main circuit further comprises a
Le système de vannes permet d'établir les cinq modes de communication suivants entre les 4 voies :
- communication entre les voies 41.
et 43, pour coupler le circuit principal et le circuit secondaire, avec lethermostat principal 17 et le deuxième thermostat de récupération de chaleur 5 en position fermée, le premier thermostat de récupération de chaleur 36 étant en position ouverte ou fermée ; - communication entre les voies 42
et 43, pour intégrer la deuxième section du radiateur principal au circuit secondaire, avec le thermostat principal et le deuxième thermostat de récupération de chaleur en position ouverte ; - communication entre les voies 43
et 41 et entre les voies 43et 42, pour intégrer la deuxième section et la majorité de la première section au circuit secondaire, avec le thermostat principal en position fermée, et le deuxième thermostat de récupération en position ouverte ; - communication entre les voies 41
et 42 et entre les voies 43et 44, pour séparer les deux circuits, avec le thermostat principal en position ouverte, et le deuxième thermostat de récupération en position ouverte ou fermée ; et - communication entre les voies 41
et 42 et les voies 41et 43, pour coupler les deux circuits, avec le thermostat principal et le deuxième thermostat de récupération en position ouverte.
- communication between the
41 and 43, for coupling the main circuit and the secondary circuit, with thechannels main thermostat 17 and the secondheat recovery thermostat 5 in the closed position, the firstheat recovery thermostat 36 being in the open position or closed; - communicating between the
42 and 43, to integrate the second section of the main radiator with the secondary circuit, with the main thermostat and the second heat recovery thermostat in the open position;channels - communicating between the
43 and 41 and between thechannels 43 and 42, to integrate the second section and the majority of the first section to the secondary circuit, with the main thermostat in the closed position, and the second recovery thermostat in the open position;channels - communication between the
41 and 42 and between thechannels 43 and 44, to separate the two circuits, with the main thermostat in the open position, and the second recovery thermostat in the open or closed position; andchannels - communication between the
41 and 42 and thechannels 41 and 43, for coupling the two circuits, with the main thermostat and the second recovery thermostat in the open position.channels
En référence à la
La cloison en nid d'abeille 27 peut être constituée d'un corps perforé de trous verticaux traversants, ou d'un assemblage de petites plaques croisées. En référence à la
Dans une variante de réalisation illustrée à la
Dans une variante de réalisation, le radiateur principal comprend une première section à une seule passe (
Pour des raisons d'architecture et/ou de puissance à évacuer par le dispositif, il peut être prévu un radiateur principal constitué de deux échangeurs séparés. En référence à la
Dans des variantes de réalisation, la boucle secondaire intègre le condenseur d'un circuit de climatisation et/ou un ou plusieurs autres échangeurs pour le refroidissement à basse température d'autres composants, notamment pour le refroidissement de l'air de suralimentation pour les moteurs à double suralimentation, et pour le refroidissement de la machine électrique et de l'électronique de puissance sur un véhicule hybride, ces échangeurs étant par exemple disposés entre la voie 43 du système de vanne et les échangeurs RAS et EGR montés en parallèle.In alternative embodiments, the secondary loop integrates the condenser of an air conditioning circuit and / or one or more other exchangers for the low temperature cooling of other components, in particular for the cooling of the charge air for the engines. double turbocharging, and for cooling the machine electrical and power electronics on a hybrid vehicle, these exchangers being for example disposed between the
Selon une autre variante, les deux échangeur RAS et EGR sont disposés en série sur la boucle basse température, l'échangeur RAS étant disposé en amont de l'échangeur EGR par rapport au sens de circulation de fluide basse température sortant du radiateur secondaire. Les deux échangeurs sont par exemple disposés entre le radiateur secondaire et la voie 43 du système de vanne. Selon une autre configuration, l'échangeur RAS est disposé entre le radiateur secondaire et la voie 43, et l'échangeur EGR est disposé entre la voie 44 et le radiateur secondaire, par exemple entre le point de raccordement de la conduite de raccordement 38 sur la boucle secondaire et la pompe secondaire.According to another variant, the two heat exchangers RAS and EGR are arranged in series on the low temperature loop, the RAS exchanger being disposed upstream of the EGR exchanger relative to the direction of circulation of low temperature fluid leaving the secondary radiator. The two exchangers are for example arranged between the secondary radiator and the
Une description des différents types de fonctionnement du dispositif de gestion thermique de la
La
Le fluide réchauffé par les échangeurs RAS et EGR, et les éventuels autres composants montés sur la boucle basse température, entre dans le circuit principal via le système de vannes pour réchauffer le moteur thermique et l'habitacle, et retourne dans la boucle basse température via la conduite de dérivation 18. La circulation de fluide dans les deux boucles est assurée par la pompe principale, la pompe secondaire électrique pouvant éventuellement être mise en marche.The fluid heated by the RAS and EGR exchangers, and any other components mounted on the low temperature loop, enters the main circuit via the valve system to heat the engine and the passenger compartment, and returns to the low temperature loop via the
La
La
La
Dans la variante utilisant les radiateurs 102 et 202 des
La
La
La
La
La
La
Tel que représenté à la
Cette variante permet un fonctionnement en mode démarrage à froid illustré sur la
Claims (10)
- Thermal management device for a motor vehicle equipped with a heat engine, in particular with a supercharged internal combustion engine, comprising- a main high-temperature cooling circuit comprising a high-temperature loop equipped with a main high-temperature radiator and with means for circulating a cooling liquid between the said main radiator and the engine, the heat-exchange area of the main radiator being divided into at least a first section, with a first and a second inlet for the circulation of fluid, and a second section with a first inlet and a second inlet for the circulation of fluid,- a secondary low-temperature cooling circuit comprising a low-temperature loop equipped with a secondary low-temperature radiator and with means for circulating a low-temperature cooling liquid, and- interconnection means connecting the main circuit and the secondary circuit, the said interconnection means making it possible to integrate the two sections of the main radiator into the main circuit or to integrate the first section into the main circuit and the second section into the secondary circuit,characterized in that- the first inlet (21a, 121a, 221a) and the second inlet (21b, 121b, 221b) of the first section (21, 121, 221) of the main radiator (2) are respectively connected to a first main radiator pipe (112) and a second main radiator pipe (113) of the high-temperature loop (11), the first inlet (22a, 122a, 222a) of the second section (22, 122, 222) being connected to the low-temperature loop (31), and connected to the first inlet of the first section by fluid communication means (27, 127, 227),- the said interconnection means comprising a four-way valve system (4) connected by a first port (41) to the second main radiator pipe (113), by a second port (42) to the second inlet (22b, 122b, 222b) of the second section of the main radiator, and interposed on the low-temperature loop by a third port (43) and a fourth port (44),- the said four-way valve system being able- to bring into communication, on the one hand, the first port (41) and the second port (42) and, on the other hand, the third port (43) and fourth port (44) in order to separate the main circuit (1) and the secondary circuit (3) by integrating the first and the second sections of the main radiator into the high-temperature loop during an operation in normal mode at high speed and load,- to bring into communication the third port and the second port in order to integrate the second section of the main radiator into the low-temperature loop during an operation in normal mode at moderate speed and load, with enhanced cooling of the secondary circuit, and- to bring into communication the third port with the first port and the second port in order to integrate the second section and at least in part the first section of the main radiator into the low-temperature loop during an operation in normal mode at moderate speed and load, with greatly enhanced cooling of the secondary circuit.
- Thermal management device according to Claim 1, characterized in that the valve system (4) is able to bring the first port (41) into communication with the second and third ports (42, 43) in order to cool the heat engine (9) using the secondary radiator (32) during an operating mode in degraded mode.
- Thermal management device according to Claim 1 or 2, characterized in that the valve system (4) is able to bring the first port (41) and the third port (43) into communication in order to cool the engine (9) when stopping the engine while hot during an operation in engine cooling mode.
- Thermal management device according to one of Claims 1 to 3, characterized in that the main circuit (1) comprises a main thermostat (17) on the first main radiator pipe (112) in order to cut or allow the circulation of fluid in the direction of the main radiator (2).
- Thermal management device according to Claim 4, characterized in that it comprises a bypass pipe (18) connecting the first main radiator pipe (112), upstream of the main thermostat (17), to a heat recovery thermostat (5), mounted on the pipe (38) which connects the first inlet (22a) of the second section (22) to the low-temperature loop (31), the said thermostat bringing either the second section (22) into communication with the low-temperature loop, for the said operations in degraded mode and in normal mode with enhanced and greatly enhanced cooling, or the bypass pipe into communication with the low-temperature loop for the recovery of heat energy during an operation in cold start mode and/or cabin heating mode when the engine is stopped, during which operation the valve system (4) brings the first port (41) and the third port (43) into communication.
- Thermal management device according to one of Claims 1 to 5, characterized in that the low-temperature loop (31) comprises a pipe (37) bypassing the low-temperature radiator that is connected upstream of the secondary radiator (32) to a heat recovery thermostat (36).
- Thermal management device according to one of Claims 1 to 6, characterized in that the said valve system comprises four controlled two-way valves: a first valve (45) connecting the first and third ports (41, 43), a second valve (46) connecting the second and third ports (42, 43), a third valve (47) connecting the first and second ports (41, 42), and a fourth valve (48) connecting the third and fourth ports (43, 44).
- Thermal management device according to one of Claims 1 to 7, characterized in that the main radiator (2) is formed by a single heat exchanger with a first and a second header box (23, 24; 123, 124), the first and the second sections (21, 22; 121, 122) being defined by a sealed partition (26, 126) and a honeycomb partition (27, 127) respectively positioned in the first and the second header boxes, the said honeycomb partition constituting the said fluid communication means.
- Thermal management device according to one of Claims 1 to 8, characterized in that the low-temperature loop (31) incorporates a charge-air/liquid radiator, termed CAR radiator (34, 134), and a recirculated exhaust gas/liquid radiator, termed EGR radiator (35, 135).
- Thermal management device according to Claim 9, characterized in that the EGR radiator (135) and/or the CAR radiator (134) comprise, from upstream to downstream with respect to the gas flows passing through them, at least one high-temperature portion, connected to the main circuit (1), and one low-temperature portion connected to the secondary circuit (3) in order to provide cooling at two temperature levels for the said gas flows.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0513426A FR2895450B1 (en) | 2005-12-28 | 2005-12-28 | HEAT MANAGEMENT DISSITIVE FOR MOTOR VEHICLE |
PCT/FR2006/051065 WO2007074249A1 (en) | 2005-12-28 | 2006-10-19 | Motor vehicle thermal management device |
Publications (2)
Publication Number | Publication Date |
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EP1966473A1 EP1966473A1 (en) | 2008-09-10 |
EP1966473B1 true EP1966473B1 (en) | 2009-04-01 |
Family
ID=36930314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06820321A Not-in-force EP1966473B1 (en) | 2005-12-28 | 2006-10-19 | Motor vehicle thermal management device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1966473B1 (en) |
AT (1) | ATE427416T1 (en) |
DE (1) | DE602006006096D1 (en) |
FR (1) | FR2895450B1 (en) |
WO (1) | WO2007074249A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2929561B1 (en) * | 2008-04-08 | 2010-09-10 | Valeo Systemes Thermiques | COOLING DEVICE FOR MOTOR VEHICLES |
FR2951778B1 (en) * | 2009-10-27 | 2012-07-20 | Peugeot Citroen Automobiles Sa | DEVICE AND METHOD FOR COOLING, VEHICLE EQUIPPED WITH SAID DEVICE |
FR2970301A1 (en) * | 2011-01-10 | 2012-07-13 | Eddie Essayem | Device for controlling temperature of engine of liquid-cooled moped e.g. scooter, has temperature sensor connected to electronic control circuit for actuating solenoid valves that allow moving heat transfer medium through control radiator |
FR2978206A1 (en) * | 2011-07-19 | 2013-01-25 | Renault Sa | THERMAL CONTROL DEVICE FOR MOTOR VEHICLE |
CN106703967B (en) * | 2017-01-06 | 2022-10-28 | 吉林大学 | Engineering vehicle temperature control system and method based on dual cooling circuit split radiator |
FR3079558B1 (en) * | 2018-03-27 | 2023-11-03 | Renault Sas | COOLING CIRCUIT FOR AN INTERNAL COMBUSTION ENGINE EQUIPPED WITH AN EXHAUST GAS RECIRCULATION CIRCUIT AND ITS CONTROL METHOD |
FR3090501B1 (en) * | 2018-12-21 | 2021-04-09 | Renault Sas | Thermal management device of a heat transfer fluid circuit of a hybrid vehicle |
RU2707787C1 (en) * | 2019-04-10 | 2019-11-29 | Федеральное автономное учреждение "25 Государственный научно-исследовательский институт химмотологии Министерства обороны Российской Федерации" | Cooling system of stationary internal combustion engine |
FR3108563A1 (en) | 2020-03-30 | 2021-10-01 | Renault S.A.S | Thermal management device for a hybrid motor vehicle |
FR3109912B1 (en) | 2020-05-05 | 2022-12-23 | Renault Sas | Thermal management device for a hybrid motor vehicle |
RU2742158C1 (en) * | 2020-06-30 | 2021-02-02 | Федеральное автономное учреждение "25 Государственный научно-исследовательский институт химмотологии Министерства обороны Российской Федерации" | Automated installation for testing fuels and oils under various engine operating conditions |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3422036B2 (en) * | 1992-07-13 | 2003-06-30 | 株式会社デンソー | Vehicle cooling system |
DE19633190B4 (en) * | 1996-08-17 | 2004-02-26 | Daimlerchrysler Ag | Cooling system for an internal combustion engine |
US6006731A (en) * | 1997-11-18 | 1999-12-28 | General Motors Corporation | Locomotive engine cooling system |
DE19854544B4 (en) * | 1998-11-26 | 2004-06-17 | Mtu Friedrichshafen Gmbh | Cooling system for a supercharged internal combustion engine |
FR2864150B1 (en) * | 2003-12-22 | 2006-03-17 | Valeo Thermique Moteur Sa | SYSTEM FOR MANAGING THE THERMAL ENERGY OF A THERMAL VEHICLE ENGINE COMPRISING TIMED SWITCHING MEANS |
-
2005
- 2005-12-28 FR FR0513426A patent/FR2895450B1/en not_active Expired - Fee Related
-
2006
- 2006-10-19 WO PCT/FR2006/051065 patent/WO2007074249A1/en active Application Filing
- 2006-10-19 AT AT06820321T patent/ATE427416T1/en not_active IP Right Cessation
- 2006-10-19 EP EP06820321A patent/EP1966473B1/en not_active Not-in-force
- 2006-10-19 DE DE602006006096T patent/DE602006006096D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2007074249A1 (en) | 2007-07-05 |
EP1966473A1 (en) | 2008-09-10 |
DE602006006096D1 (en) | 2009-05-14 |
ATE427416T1 (en) | 2009-04-15 |
FR2895450A1 (en) | 2007-06-29 |
FR2895450B1 (en) | 2008-03-07 |
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