EP2077387B1 - Procédé destiné au refroidissement d'un flux des gaz d'échappement recyclé d'un moteur à combustion interne - Google Patents

Procédé destiné au refroidissement d'un flux des gaz d'échappement recyclé d'un moteur à combustion interne Download PDF

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Publication number
EP2077387B1
EP2077387B1 EP08100147A EP08100147A EP2077387B1 EP 2077387 B1 EP2077387 B1 EP 2077387B1 EP 08100147 A EP08100147 A EP 08100147A EP 08100147 A EP08100147 A EP 08100147A EP 2077387 B1 EP2077387 B1 EP 2077387B1
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EP
European Patent Office
Prior art keywords
cylinder head
exhaust gas
exhaust
cooling
coolant
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
EP08100147A
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German (de)
English (en)
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EP2077387A1 (fr
Inventor
Ingo Lenz
Stefan Quiring
Richard Fritsche
Kai Kuhlbach
Martin Lutz
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Ford Global Technologies LLC
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Ford Global Technologies LLC
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Publication date
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Priority to EP08100147A priority Critical patent/EP2077387B1/fr
Priority to EP09150134A priority patent/EP2077388B1/fr
Priority to DE502009000190T priority patent/DE502009000190D1/de
Publication of EP2077387A1 publication Critical patent/EP2077387A1/fr
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Publication of EP2077387B1 publication Critical patent/EP2077387B1/fr
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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • 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
    • F01P2003/024—Cooling 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/16—Outlet manifold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor

Definitions

  • the invention relates to a method for cooling a recirculating exhaust gas mass flow, which is diverted by means of a return line of an exhaust gas mass flow, which is discharged from at least one outlet of at least one provided in a cylinder head cylinder of an internal combustion engine, wherein the recirculating exhaust gas mass flow fed after leaving the cylinder head of a cooling device and is cooled.
  • a method for cooling a recirculating exhaust gas mass flow which is diverted by means of a return line of an exhaust gas mass flow, which is discharged from at least one outlet of at least one provided in a cylinder head cylinder of an internal combustion engine, wherein the recirculating exhaust gas mass flow fed after leaving the cylinder head of a cooling device and is cooled.
  • Such a method is z.ß. from the EP 1 233 170 172 known.
  • state-of-the-art internal combustion engines are equipped with different and optionally several exhaust aftertreatment systems.
  • the exhaust gas recirculation ie the return of combustion gases from the exhaust pipe into the intake pipe or from the exhaust gas side to the intake side targeted, in which the nitrogen oxide emissions can be significantly reduced with increasing exhaust gas recirculation rate.
  • Exhaust gas recirculation is also suitable for reducing emissions of unburned hydrocarbons in the partial load range.
  • the line for returning the exhaust gas d. H. the return line is usually branched off from the entire exhaust line, namely downstream or upstream of an exhaust aftertreatment system provided in the entire exhaust line, or downstream or upstream of a turbine of an exhaust gas turbocharger.
  • an additional cooler or a cooling device is provided in the return line through which passes the return line and with which the recirculated exhaust gas is cooled.
  • the temperature is lowered in the hot recirculating exhaust gas mass flow and thus increases the density of the exhaust gases.
  • the density is reduced, resulting in a decrease in flow losses.
  • the thermal load of a downstream of the cooling device provided in the return line valve for controlling the return rate (EGR valve) and / or a seal decreases, so lower quality requirements of the valve or the seal can be made.
  • the EGR valve can be made of less temperature-resistant and thus less expensive materials than if the recirculated exhaust gas mass flow would not be cooled.
  • cooling device used in the prior art is arranged adjacent to the cylinder head heat exchanger, in which the recirculated exhaust gas is introduced via return line and forwarded from which the cooled recirculated exhaust gas in turn by means of return line in the inlet region or on the intake side of the internal combustion engine becomes.
  • This procedure for cooling the recirculated exhaust gas mass flow has several disadvantages.
  • an additional component namely the cooling device, must be provided, which increases the mounting requirement and the manufacturing costs.
  • the need to move return lines to the cooling device now and then away from the cooling device make such cooling devices consuming.
  • the length of the return line increases considerably in that the return line to the cooling device now and then has to be led away from the cooling device. With the length, the volume of the return line increases, whereby the response of the exhaust gas recirculation worsened. The latter adversely affects the transient operation of the internal combustion engine.
  • This object is achieved by a method for cooling a recirculating exhaust gas mass flow, which by means of a return line of an exhaust gas mass flow is branched off, which is discharged from at least one outlet of at least one provided in a cylinder head cylinder of an internal combustion engine, wherein the recirculating exhaust gas mass flow is fed and cooled after leaving the cylinder head of a cooling device, and which is characterized in that a unit of the internal combustion engine is used as a cooling device , which already has at least one additional task in the context of the operation of the internal combustion engine.
  • an already existing component is used for the cooling of the exhaust gas flow to be recirculated d.
  • each component or each group of components is used, the one or more already - in addition to the object of the exhaust gas cooling according to the invention - at least one further function d.
  • the inventive method allows a compact design of the entire drive unit and thus the densest possible packaging in the engine compartment, which is considered to be advantageous.
  • the length of the return line is also shortened as a rule, in particular if a component is used as the cooling device, which component is immediately adjacent to the cylinder head Exhaust manifold or the Abgriffsstelle the exhaust gas recirculation or the return line is arranged.
  • An internal combustion engine in which the exhaust gas to be recirculated is cooled using the method according to the invention, thus has an exhaust gas recirculation with improved response and thus a fundamentally improved transient operating behavior.
  • the object underlying the invention is thus achieved, namely to show a method for cooling a recirculated exhaust gas mass flow, with which the disadvantages known from the prior art are overcome.
  • the cylinder head is within the meaning of the present invention, an aggregate of the internal combustion engine, which already has at least one additional task in the context of the operation of the internal combustion engine.
  • the cylinder head forms the combustion chambers of the internal combustion engine.
  • the cylinder head is often used to hold the valve train.
  • an internal combustion engine requires control means and actuators to operate these controls.
  • the expulsion of the combustion gases via the outlet openings and the filling of the combustion chamber that is done Sucking the fresh mixture or the fresh air through the inlet openings.
  • four-stroke engines almost exclusively lift valves are used as control members that perform an oscillating lifting movement during operation of the internal combustion engine and thus release the inlet and outlet ports and close.
  • the required for the movement of the valves valve actuating mechanism including the valves themselves is referred to as a valve train.
  • the inlet ducts leading to the inlet openings and the outlet ducts or exhaust ducts adjoining the outlet openings are at least partially integrated in the cylinder head according to the prior art.
  • the exhaust pipes of the cylinders are usually combined to form an overall exhaust gas line.
  • the merging of the exhaust pipes to the entire exhaust line is referred to in general and in the context of the present invention as exhaust manifold or manifold.
  • the exhaust manifold may be partially or fully integrated in the cylinder head.
  • the exhaust gases Downstream of the manifold, the exhaust gases are optionally supplied to the turbine of an exhaust gas turbocharger and / or one or more exhaust aftertreatment systems.
  • the thermally highly loaded cylinder head is preferably equipped with a liquid cooling.
  • the liquid cooling requires the equipment of the cylinder head with a coolant jacket d. H. the arrangement of the coolant through the cylinder head leading coolant channels, which causes a complex structure of the cylinder head construction.
  • the heat is emitted inside the cylinder head to the coolant, usually mixed with additives added water.
  • the coolant is conveyed by means of a pump arranged in the cooling circuit, so that it circulates in the coolant jacket. The heat given off to the coolant is removed in this way from the interior of the cylinder head and removed from the coolant in a heat exchanger again.
  • the exhaust gas mass flow to be recirculated is fed again by means of return line to the cylinder head, wherein the exhaust gas mass flow is cooled in the cylinder head.
  • the exhaust gas releases heat to the cylinder head, in particular to the liquid cooling integrated in the cylinder head, so that the cylinder head is used or used as a cooling device.
  • the heat given off by the exhaust gas to the coolant is then released into the environment in the heat exchanger provided outside the cylinder head.
  • Embodiments in which the coolant jacket integrated in the cylinder head at least partially surrounds the return line are advantageous. In this way, the recirculated exhaust gas is cooled particularly effectively.
  • Embodiments of the method in which the exhaust gas mass flow to be recirculated is fed by means of a return line to a component adjacent to the cylinder head are advantageous, the adjacent component being used as a cooling device.
  • any component is considered which adjoins the cylinder head without spacing or indirectly, for example separated only by a gasket. connects, is connected to the cylinder head and the already - in addition to the recording of the return line according to the invention - at least one further function d. H. Task with regard to the operation of the internal combustion engine.
  • Embodiments of the method in which a component which has liquid cooling is used as the adjacent component are advantageous.
  • substantially greater amounts of heat can be dissipated with liquid cooling than with air cooling, in which heat is removed by means of an air flow guided over the surface of the component.
  • the more heat is removed from the exhaust gas the stronger the temperature in the recirculating exhaust gas flow can be reduced, which is why the temperature of the cylinder fresh charge can be lowered significantly or can be influenced in a wider temperature range.
  • the walls of the adjacent component forming the liquid cooling system are formed as large as possible in order to increase the heat transfer by convection, which can be done for example by the arrangement of cooling fins or cooling knobs.
  • the cooling ribs or cooling knobs can be arranged or formed both on the coolant side and on the exhaust side.
  • cooling fins on the exhaust side are advantageous.
  • Embodiments of the method in which the liquid cooling of the adjacent component is connected to the coolant jacket, ie the liquid cooling of the cylinder head, are advantageous.
  • this variant of the method form the two Liquid cooling a common coolant circuit, so that basically only one pump for conveying the coolant and only one heat exchanger must be provided for dissipating the heat to the environment.
  • Embodiments of the method are advantageous, for example, in which a coolant housing which serves to supply coolant to the coolant jacket of the cylinder head and / or to discharge coolant from the coolant jacket of the cylinder head is used as adjoining component.
  • a coolant housing, with which coolant is guided into and out of the cylinder head, is inherently an adjoining component whose fluid cooling is connected to the liquid cooling of the cylinder head.
  • the tapping point for exhaust gas recirculation is integrated into the cylinder head.
  • the integrated into the cylinder head tapping point allows the one-piece design of manifold and return line d. H. the avoidance of training and thus the sealing of a non-positive connection point between the manifold and return line.
  • the integration of the tapping point leads to a reduction in the number of components and to a more compact design. The latter also supports the effort to achieve as dense as possible a packaging of the drive unit in the engine compartment.
  • the integration of the tap point in the cylinder head usually leads to a shortening of the return line with the already mentioned above advantages.
  • a cylinder head with a built-in cylinder head tapping point for exhaust gas recirculation describes, for example, the GB 2 370 073 A ,
  • the return line branches off from a partial exhaust gas line of a cylinder with two outlet openings.
  • the outlet channels or exhaust pipes, which adjoin the outlet openings are at least partially integrated in the cylinder head according to the prior art.
  • the exhaust pipes of the outlet openings of a single cylinder are, for example - as in the GB 2 370 073 A disclosed - merged within the cylinder head to a cylinder associated with the partial exhaust gas line, these partial exhaust gas lines are then merged outside the cylinder into a single overall exhaust gas line.
  • the exhaust manifold can also be fully integrated into the cylinder head.
  • a cylinder head in which connects to each outlet opening an exhaust pipe and merge the exhaust pipes of the cylinder within the cylinder head to an overall exhaust line, characterized by a very compact design, the total distance of the exhaust pipes of the exhaust manifold is reduced.
  • the use of such a cylinder head also leads to fewer components and consequently to a reduction in costs, in particular the assembly and deployment costs.
  • Such a cylinder head is preferably equipped with a powerful cooling, since the thermal load is much higher than in a conventional cylinder head, which is equipped with an at least partially external manifold.
  • the powerful cooling offers advantages in the cooling of the recirculating exhaust gas mass flow, in particular when the cylinder head is used as a cooling device.
  • the Abgriffsstelle exhaust gas recirculation is usually outside of the cylinder head.
  • the return line must be connected to the entire exhaust line, for example by means of a flange connection.
  • the joint is on the one hand a potential leakage point for the unwanted escape of exhaust gases, which implies high demands on the seal.
  • this connection is thermally highly loaded by the hot exhaust gases, so that high demands are placed on the execution of the connection.
  • a downstream provided EGR valve is thermally less heavily loaded, so that optionally can be dispensed with cooling of the EGR valve or less temperature-resistant and thus cheaper materials can be used to produce the valve.
  • the use of the method according to the invention is advantageous, in particular, in a supercharged internal combustion engine, since exhaust gas recirculation and charging are frequently used in combination and a supercharged internal combustion engine is subject to a higher thermal load, because the exhaust gas temperatures are comparatively high, so that the use of a cooling device for cooling the recirculated exhaust gas is particularly advantageous and recommended.
  • the dimensioning d. H Determining the length of the exhaust ducts in supercharged internal combustion engines with respect to the combustion process of lesser importance than uncharged internal combustion engines, so that in turbocharged internal combustion engines, the generally short length of a - at least partially - integrated in the cylinder head manifold has no negative impact on the performance of the internal combustion engine.
  • the inventive method is particularly advantageous in a supercharged internal combustion engine, which is equipped with a cylinder head having a fully integrated exhaust manifold.
  • the use of the method according to the invention is advantageous in particular in internal combustion engines which are charged by means of turbocharging.
  • the turbine of an exhaust gas turbocharger is arranged in the overall exhaust line, thereby increasing the exhaust pressure upstream of the turbine and thus the exhaust pressure in the manifold, which increases the pressure gradient between the exhaust side and suction side and supports the flow of exhaust gas in the return line, if assumed is that the return line upstream of the turbine branches off from the entire exhaust line or the manifold.
  • FIG. 1 shows an embodiment of the cylinder head 13 in a perspective view with a view of the mounting end face 14a, on which the cylinder head 13 with the in the FIGS. 2a, 2b is shown connected to the component or to this component to the cylinder head 13 connects.
  • the cylinder head 13 has two return lines 7a ', 7b' open to the assembly end face 14a for the exhaust gas to be recirculated.
  • the return line 7a ' branches off inside the cylinder head 13 from the exhaust manifold for discharging the exhaust gases, and exits from the cylinder head 13 at the mounting face 14a to guide the exhaust mass flow to be recirculated to the adjoining component serving as the cooling device.
  • the cylinder-head-side return lines 7a ', 7b' form part of the complete return lines 7a, 7b, which only in the assembled state from the combination of the cylinder head-side return lines 7a ', 7b' with the component-side return lines 7a 'corresponding to these return lines 7a', 7b '. , 7b "put together ie result (see also FIG. 2a ).
  • a first return line 7a, 7a ' runs upstream from an EGR valve which is attached to the adjacent component, whereas the second return line 7b, 7b' leads downstream from the EGR valve (see also FIGS. 2a and 2b ).
  • the exhaust gas flow branched off and returned from the exhaust manifold within the cylinder head 13 flows at the inlet A into the return line 7a, 7a 'and leaves this return line 7a, 7a' at the outlet B to pass the EGR valve. After flowing through the EGR valve, this exhaust gas stream enters the second return line 7b, 7b 'at the inlet C, flows through it and leaves the return line 7b, 7b' at the outlet D. In this case, the exhaust gas stream is cooled.
  • the cylinder head 13 is equipped with a liquid cooling 17a ', 17b' and has two cylinder-side coolant channels 17a ', 17b', which pierce the mounting end face 14a and pass into the adjacent component.
  • the coolant channels 17a ', 17b' are used for discharging coolant from the coolant jacket of the cylinder head 13 and at the same time supplying coolant into the adjacent component.
  • a line 20 'for venting the crankcase is integrated into the cylinder head 13, which also pierces the mounting end face 14a and merges into the adjacent component.
  • FIG. 2a shows a component 16 adjacent to the cylinder head in a perspective view with a view of the mounting end face 14b.
  • FIG. 2b shows this component 16 also in a perspective view, but with a view of the mounting end face 14b opposite side of the component 16th
  • FIGS. 2a, 2b illustrated water outlet is a to the cylinder head according to FIG. 1 adjacent component 16, which adjoins in the mounted state without distance or indirectly via an intermediate seal to the cylinder head ie adjoins and is connected to the cylinder head by the mounting end face 14b of the Wasserauslrawgephaseuses placed flush on the mounting end face of the cylinder head and bolted.
  • the water outlet In addition to receiving the return line 7a, 7b for cooling the recirculating exhaust gas flow, the water outlet has the primary task to dissipate the coolant from the cylinder head d. H. To control or ensure the coolant outflow from the cylinder head.
  • an aggregate or component 16 of the internal combustion engine is used as a cooling device 15 with the water outlet, which already has a further task in the context of the operation of the internal combustion engine.
  • the water outlet housing has two return lines 7a “, 7b” for the exhaust gas to be returned, which are open towards the assembly end face 14b. These housing-side return lines 7a “, 7b” form part of the complete return lines 7a, 7b, which are formed only in combination with the cylinder head-side return lines 7a ', 7b' (see also FIG FIG. 1 ). With regard to the flow path of the exhaust gas to be recirculated, reference is made to the statements already made above.
  • the water outlet housing has two housing-side coolant channels 17a ", 17b", which are open to the mounting end face 14b and connect to the cylinder head side coolant channels.
  • the Wasserauslrawgephase with a liquid cooling 17a ", 17b” is equipped, which communicates with the liquid cooling of the cylinder head d. H. connected is.
  • An integrated in the water outlet housing line 20 "for venting the crankcase connects to the provided in the cylinder head vent line and pierces the mounting end face 14b.
  • FIG. 2b can be removed, the water outlet on a recess 19 for receiving a thermostat.
  • An attachment flange 18 provided on the housing serves to connect an EGR valve. At this time, the exhaust gas to be recirculated flows from the housing at the inlet 18a into the EGR valve, back through the valve, and back into the housing at the outlet 18b, where it is cooled again as it flows through the second return pipe 7b.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Claims (8)

  1. Procédé de refroidissement d'un flux massique de gaz d'échappement à recirculer, qui est dévié au moyen d'une conduite de recirculation (7a, 7b) d'un flux massique de gaz d'échappement qui est évacué hors d'au moins une ouverture d'échappement d'au moins un cylindre d'un moteur à combustion interne prévu dans une culasse (13), le flux massique de gaz d'échappement à recirculer étant acheminé à sa sortie de la culasse (13) à un dispositif de refroidissement (15) et étant refroidi, un ensemble du moteur à combustion interne étant utilisé comme dispositif de refroidissement (15), qui remplit déjà au moins une autre tâche dans le cadre du fonctionnement du moteur à combustion interne, caractérisé en ce qu'une conduite de gaz d'échappement se raccorde à chaque ouverture d'échappement, et les conduites de gaz d'échappement des cylindres à l'intérieur de la culasse (13) sont rassemblées en formant un collecteur de gaz d'échappement en une conduite de gaz d'échappement totale, de sorte que le collecteur de gaz d'échappement soit complètement intégré dans la culasse (13), le flux massique de gaz d'échappement à recirculer à l'intérieur de la culasse (13) étant dévié au moyen de la conduite de recirculation (7a, 7b).
  2. Procédé selon la revendication 1, caractérisé en ce que le flux massique de gaz d'échappement à recirculer est acheminé au moyen de la conduite de recirculation (7a, 7b) à nouveau à la culasse (13), la culasse (13) étant utilisée comme dispositif de refroidissement (15).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la culasse (13) est munie d'une chemise de réfrigérant, c'est-à-dire d'un refroidissement liquide (17a', 17b').
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que le flux massique de gaz d'échappement à recirculer est acheminé au moyen de la conduite de recirculation (7a, 7b) à un composant (16) adjacent à la culasse (13), ce composant adjacent (16) étant utilisé comme dispositif de refroidissement (15).
  5. Procédé selon la revendication 4, caractérisé en ce que l'on utilise comme composant adjacent (16) un composant (16) qui présente un refroidissement liquide (17a", 17b").
  6. Procédé selon la revendication 5, caractérisé en ce que le refroidissement liquide (17a", 17b") du composant adjacent (16) est connecté au refroidissement liquide (17a', 17b') de la culasse (13).
  7. Procédé selon l'une quelconque des revendications 4 à 6, caractérisé en ce que l'on utilise comme composant adjacent (16) un boîtier de réfrigérant qui sert à acheminer du réfrigérant dans la chemise de réfrigérant de la culasse (13) et/ou à l'évacuation de réfrigérant hors de la chemise de réfrigérant de la culasse (13).
  8. Procédé selon la revendication 7, caractérisé en ce que l'on utilise comme boîtier de réfrigérant un boîtier de sortie d'eau.
EP08100147A 2008-01-07 2008-01-07 Procédé destiné au refroidissement d'un flux des gaz d'échappement recyclé d'un moteur à combustion interne Active EP2077387B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08100147A EP2077387B1 (fr) 2008-01-07 2008-01-07 Procédé destiné au refroidissement d'un flux des gaz d'échappement recyclé d'un moteur à combustion interne
EP09150134A EP2077388B1 (fr) 2008-01-07 2009-01-07 Assemblage d'une culasse et d'un bloc moteur et son utilisation.
DE502009000190T DE502009000190D1 (de) 2008-01-07 2009-01-07 Kombination mit Zylinderkopf und Zylinderblock und Verwendung einer derartigen Kombination

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DE502009000190D1 (de) * 2008-01-07 2011-01-13 Ford Global Tech Llc Kombination mit Zylinderkopf und Zylinderblock und Verwendung einer derartigen Kombination
JP5387612B2 (ja) * 2010-06-25 2014-01-15 マツダ株式会社 エンジンの排気還流装置
DE102012023004A1 (de) * 2012-11-24 2014-06-12 Deutz Aktiengesellschaft Brennkraftmaschine mit einem Kurbelgehäuse
DE102015206891A1 (de) * 2015-04-16 2016-10-20 Bayerische Motoren Werke Aktiengesellschaft Abgasrückführungsbaugruppe mit Abgaskrümmer
US10626833B2 (en) 2016-03-29 2020-04-21 Yanmar Co., Ltd. Engine device
JP6473096B2 (ja) 2016-03-29 2019-02-20 ヤンマー株式会社 エンジン装置
FR3063772B1 (fr) * 2017-03-08 2021-12-03 Renault Sas Interface echangeur egr hp pour moteur thermique
JP6619375B2 (ja) * 2017-03-24 2019-12-11 ヤンマー株式会社 エンジン装置
JP6468326B1 (ja) * 2017-08-24 2019-02-13 マツダ株式会社 車両用パワートレインユニット
FR3080409B1 (fr) * 2018-04-23 2020-11-27 Renault Sas Moteur a combustion interne avec plaque de fermeture d'une face de distribution

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