EP2644874B1 - Dispositif d'introduction de gaz, en particulier un dispositif de récupération de gaz d'échappement - Google Patents

Dispositif d'introduction de gaz, en particulier un dispositif de récupération de gaz d'échappement Download PDF

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Publication number
EP2644874B1
EP2644874B1 EP13159883.1A EP13159883A EP2644874B1 EP 2644874 B1 EP2644874 B1 EP 2644874B1 EP 13159883 A EP13159883 A EP 13159883A EP 2644874 B1 EP2644874 B1 EP 2644874B1
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EP
European Patent Office
Prior art keywords
fresh air
exhaust gas
duct portion
feed
recirculation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP13159883.1A
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German (de)
English (en)
Other versions
EP2644874A3 (fr
EP2644874A2 (fr
Inventor
Christian Gramlich
Rainer Handel
Harald Rieger
Hartmut Sauter
Thomas Zirkelbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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Filing date
Publication date
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Publication of EP2644874A2 publication Critical patent/EP2644874A2/fr
Publication of EP2644874A3 publication Critical patent/EP2644874A3/fr
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Publication of EP2644874B1 publication Critical patent/EP2644874B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • 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
    • F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
    • 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
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
    • 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
    • F02M26/23—Layout, e.g. schematics
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1288—Intake silencers ; Sound modulation, transmission or amplification combined with or integrated into other devices ; Plurality of air intake silencers

Definitions

  • the present invention relates to an inlet device for gases, in particular an exhaust gas recirculation device with the features of the preamble of claim 1 as zBaus the document WO 2010/045075 A2 are known.
  • the invention also relates to an exhaust gas recirculation device equipped with such an introduction device and to an internal combustion engine equipped with such an exhaust gas recirculation device.
  • Such an introduction device is preferably used in an exhaust gas recirculation device, which recirculates exhaust gas of an internal combustion engine from an exhaust system of the internal combustion engine to a fresh air system of the internal combustion engine.
  • the introduction of the recirculated exhaust gas into the fresh air system takes place via such an introduction device.
  • Such an introducing device which comprises a fresh air duct section for guiding fresh air and a return duct section for guiding recirculated exhaust gas.
  • the return duct section wraps around the fresh air duct section in the circumferential direction over exactly 360 °.
  • the return duct section covers a plurality of radial inlet openings of the fresh air duct section distributed in the circumferential direction. Through these inlet openings of the return duct section and the fresh air duct section are fluidly connected to each other.
  • a cylindrical sleeve is inserted into a cylindrical housing, such that the annular return channel section forms radially between the housing and the sleeve.
  • the sleeve contains the inlet openings and surrounds the fresh air duct section.
  • a return line of the exhaust gas recirculation device is connected upstream of a turbine of an exhaust gas turbocharger to an exhaust line of the exhaust system and downstream of a compressor of the exhaust gas turbocharger to a fresh air line of the fresh air system.
  • the return line is connected downstream of the turbine to the exhaust gas line on the inlet side and to the fresh air line on the outlet side upstream of the compressor.
  • the LP EGR is generally preferred, since in this case the full exhaust gas flow of the turbine is available.
  • a larger pressure gradient between the exhaust pipe and fresh air line is generally low-pressure side realized as high-pressure side.
  • the recirculated exhaust gas In order to increase the mass flow of the recirculated exhaust gas and to reduce the NOX emissions of the internal combustion engine, it is expedient to cool the recirculated exhaust gas. Since water vapor is usually contained in the exhaust gas, condensate formation can occur due to the cooling of the recirculated exhaust gas. In the case of a LP EGR, there is basically the risk that droplets of condensate strike a compressor wheel of the compressor, which leads to a high mechanical load on the compressor wheel. This can also cause damage to the compressor. A risk of damage to the compressor also results from solids that can be carried in the exhaust. For example, soot particles can be carried in the exhaust gas.
  • the diversion of the recirculated exhaust gas is therefore downstream of a particulate filter. If ceramic particle filters are used, there is in these the danger that ceramic particles, for example, due to shocks, replace and be carried in the exhaust.
  • the present invention is concerned with the problem of providing an improved embodiment for an inlet device or for an exhaust gas recirculation device or for an internal combustion engine or a fuel cell, which is characterized in particular by the fact that the risk of damage to subsequent components, in particular a compressor wheel, is reduced.
  • This problem is solved according to the invention by the subject matter of the independent claim.
  • Advantageous embodiments are the subject of the dependent claims.
  • the invention is based on the general idea of integrating a separating device into the inlet device, with the aid of which liquid or solid impurities or particles entrained in the gas, in particular in the exhaust gas, can be eliminated from the gas or exhaust gas.
  • the separating device is designed so that it can be flowed through by the gas, while it is impermeable to the particles to be separated, ie for liquid droplets to be separated or for solid bodies to be separated.
  • the gas or waste gas can be any process gas which arises during a chemical reaction and contains solid and / or liquid particles. In particular, it is an exhaust gas generated in a combustion process.
  • the gas may also be a blow-by gas of a crankcase ventilation or a cathode gas of a fuel cell.
  • the invention proposes for this purpose a separator structure, which is arranged in the respective inlet opening, through which a gas channel section, in particular a return channel section, with a main channel section, in particular, a fresh air duct section is fluidly connected.
  • a gas channel section in particular a return channel section
  • main channel section in particular, a fresh air duct section
  • the gas channel section is also referred to as the return channel section, which is not intended to be a restriction to a single gas type to be introduced into the main channel section or fresh air channel section.
  • exhaust gas recirculation in the fresh air duct are therefore only examples of all mentioned, to be introduced into another channel section gases.
  • the return passage section is a separate component with respect to the fresh air passage section, so that the return passage section is attached to the fresh air passage section.
  • different materials can be used for the return duct section and the fresh air duct section.
  • the separation device or the separator structure is expediently designed so that it is impermeable to particles of critical size. Particles whose size is below the critical size, however, can pass largely unhindered depending on the nature of the separator structure through the separator or through the separator structure. These particles are then so small in mass that they pose no serious risk of damage to subsequent components, in particular the compressor wheel.
  • the separator structure of the respective inlet opening is assigned so that recirculated exhaust gas passes only through the separator structure into the fresh air duct section.
  • a flow through the separator structure is thus absolutely necessary in order to reach the fresh air duct to get. This ensures that at no point is a bypass of the separator structure possible for the particles entrained in the exhaust gas.
  • the return duct section wraps around the fresh air duct section according to an advantageous embodiment by at least 360 °.
  • the introduction of the recirculated exhaust gas over the entire circumference of the fresh air passage portion is distributed, so that in principle a comparatively large flow-through cross-section can be realized.
  • a pressure loss which arises when flowing through the separator structure, be largely or completely compensated.
  • the return duct section has an inlet region which merges tangentially into a looping region, in which the return duct section wraps around the fresh air duct section in the circumferential direction.
  • the introduction device can be designed so that such, already deposited in advance larger particles along the wall of the return duct section are transported to a collecting area, which can be formed for this purpose in a housing of the inlet device. Additionally or alternatively, the introduction device may be arranged in the assembled state that the previously deposited coarser particles now fall due to gravity in at least one collecting area in the absence of exhaust gas flow, which can be designed for this purpose in a housing of the inlet device.
  • the return duct section in the looping region has one or more connecting channels, in which the separated impurities are evenly distributed or removed.
  • These connection channels preferably have a smaller cross section than the return channel section.
  • the return duct section can wrap around the fresh air duct section in a helical manner. This means that the wrapping takes place not only in the circumferential direction but also in the axial direction to achieve a pitch for the helical shape. This makes it possible, on the one hand, to enlarge the region in which the fluidic coupling takes place between the return duct section and the fresh air duct section in the axial direction. On the other hand, it is thereby possible to arrange the fresh air duct section so that it wraps around the fresh air duct section over more than 360 °, which likewise leads to an enlargement of the looping area. Therefore, the return duct section can particularly advantageously wrap around the fresh air duct section over at least 720 °.
  • the enlargement of the wrap-around region leads to the fact that the flow-through cross-section of the respective inlet opening and the flow-through cross section of the separator structure can be increased in order to reduce the pressure drop at the separator structure.
  • the enlargement of the flow-through cross section of the inlet opening causes the flow velocity in the exhaust gas to be reduced at the transition to the fresh air. This is of significant importance for the separation effect of the separator structure.
  • the danger of a breakdown of particles by the Separator structure reduced.
  • the particles can not penetrate deeply into the material of the deposition structure, whereby the clogging of the separator structure and a concomitant increase in the throughflow resistance can be slowed down.
  • the wrap-around region encloses a region greater than 180 °, wherein the stretched length of the wrap-around region is longer than the circumference of the fresh-air channel.
  • the introduction of the exhaust gas takes place over a large area of the fresh air channel.
  • the wrap area is preferably arranged meander-shaped around the fresh air duct. The deflections in the return duct section result in greater centrifugal forces, with improved separation of the particles being achieved in these areas. In a complete enclosure of the fresh air duct, the deflection regions of the return duct section can overlap.
  • wrap-around region it is also possible to combine a meander-shaped section with a spirally formed subsequent section in order to optimize the introduction point geometrically and / or functionally.
  • the return duct section is open radially inwardly in a region covering the respective inlet opening.
  • the return duct section is formed as a half-shell, which is arranged sealingly on the fresh air duct.
  • the half-shell only represents the outer contour of the return duct section. Radially inward, the return duct section is delimited by the fresh air duct section.
  • the return duct section can also be formed from a plurality of sealingly connected half-shells. This is particularly advantageous for a cost-effective production of the return duct section.
  • the return duct section may be formed in a housing which is mounted on the fresh air duct section.
  • the housing may be glued or welded to the fresh air duct section.
  • the housing may be segmented in the circumferential direction such that it has at least two housing parts which are fastened to each other.
  • the attachment of the housing parts together preferably by means of an adhesive bond or a welded connection.
  • a two-part housing can be produced particularly easily and inexpensively. In addition, this simplifies the assembly at the fresh air duct section.
  • Preferred is an embodiment in which exactly two housing parts are provided, which in particular represent housing halves and thus each extend over 180 ° in the circumferential direction. In principle, however, more than two housing parts may be provided.
  • the inlet opening extends annularly in the circumferential direction. This creates an axial gap between two adjacent regions of the fresh air duct section.
  • the separator structure is now annular and inserted into the annular inlet opening to thereby fill the inlet opening.
  • the separator structure can be dimensioned such that it is flush with the axially adjacent regions of the fresh air duct section radially inward and / or radially outward.
  • the separator structure may have an annular carrier body which has a plurality of radial openings, in each of which a separator element or a separator material is arranged.
  • a separator material which is suitable for realizing the desired flowability and separation effect, usually has a comparatively low stability and can be deformed, for example, by the back pressure of the incoming recirculated exhaust gas.
  • the carrier body may be fixedly connected to the axially adjacent areas of the fresh air duct section.
  • the carrier body can be glued or welded to the regions of the fresh air duct section.
  • the carrier body is produced integrally with the regions of the fresh air duct section, for example by injection molding.
  • the separator structure is designed as a screen structure.
  • a screen structure can be designed, for example, as a fabric or as a grid.
  • a sieve structure stands out through a mesh size, which can be selected specifically so that particles above the desired critical particle size can not pass through the screen structure.
  • the screen structure can be designed in one or more layers.
  • a screen material for producing the screen structure may be metallic or made of plastic. If the separator structure comprises a carrier body with separator elements, then the separator elements are preferably sieve elements made of said sieve material.
  • the screen material has an electrical contact, by means of which the screen material is electrically heated.
  • the screen material is electrically heated.
  • An exhaust gas recirculation device comprises a return line, which is connected on the input side to an exhaust pipe of an exhaust system and on the output side to a fresh air line of a fresh air system.
  • a return line which is connected on the input side to an exhaust pipe of an exhaust system and on the output side to a fresh air line of a fresh air system.
  • the coupling between the return line and the fresh air line via an inlet device of the type described above takes place.
  • the return line is connected to the return duct section of the inlet, while the fresh air duct section of the inlet device is integrated into the fresh air line.
  • a return cooler in which in the return line upstream of the inlet a return cooler is arranged, with the aid of which the recirculated exhaust gas can be cooled. Since the incoming at the inlet exhaust gas is cooled, the introduction device can be made in principle of plastic. In particular, the separator structure can be made of plastic.
  • the return duct section has an additional connection for the introduction of a further gas into the fresh air section.
  • This nozzle is connected to an emission source for the additional gas.
  • the spigot is connected to a crankcase breather or a tank breather.
  • An internal combustion engine comprises an exhaust system, a fresh air system and an exhaust gas recirculation device of the type described above.
  • the exhaust-gas recirculation device preferably being arranged on the low-pressure side. Accordingly, the return line of the exhaust gas recirculation device is connected downstream of a turbine of the exhaust gas turbocharger on the exhaust pipe, while the inlet device is connected upstream of a compressor of the exhaust gas turbocharger to the fresh air line.
  • a fuel cell according to the invention comprises a fresh air system, an exhaust system and a gas introduction device of the type described above.
  • the apertures in the region of the inlet point are designed such that they together with the inlet device form a resonator which is suitable for damping the frequencies present in the fresh air line.
  • the breakthroughs in their geometric shape and / or their cross-sectional area may be the same or different.
  • several frequencies at the inlet point be steamed.
  • a targeted attenuation of particularly disturbing frequencies can be achieved via the arrangement or distribution of the breakthroughs.
  • multiple apertures contact multiple channels to achieve improved noise attenuation.
  • the openings are preferably circular, slit-shaped or rectangular.
  • Fig. 1 is a fresh air system 3 is connected to an engine block 1 of an internal combustion engine 2 to be able to supply fresh air to combustion chambers 5 of the internal combustion engine 2 via a fresh air line 4. Furthermore, an exhaust system 6 is provided, with which exhaust gas generated in the combustion chambers 5 can be discharged via an exhaust pipe 7.
  • the internal combustion engine 2 is charged and is accordingly equipped with an exhaust gas turbocharger 8, which has a turbine 9 with a turbine wheel 10 and a compressor 11 with a compressor wheel 12.
  • the turbine 9 is arranged in the exhaust pipe 7.
  • the compressor 11 is arranged in the fresh air line 4. In the usual way while the turbine 10 is rotatably connected via a common shaft 49 with the compressor 12.
  • the internal combustion engine 2 is also equipped with an exhaust gas recirculation device 13, with the aid of which exhaust gas can be recirculated from the exhaust system 6 to the fresh air system 3.
  • a return line 14 is connected at the inlet side at 15 to the exhaust gas line 7 and connected via an inlet device 16 to the fresh air line 4.
  • the exhaust gas recirculation device 13 is arranged on the low pressure side. Accordingly, the inlet-side connection point 15 is located downstream of the turbine 9, while the inlet device 16 is arranged upstream of the compressor 11.
  • the fresh air system 3 contains by way of example an air filter 17 and / or an air mass meter 18 and / or a charge air cooler 19 and / or a throttle device 20.
  • the exhaust system Be equipped with an oxidation catalyst 21 and / or with a particulate filter 22 and / or with a NOX storage catalyst 23 and / or with an exhaust valve 24 and / or with a H 2 S catalyst 25 and / or with a muffler 26.
  • the exhaust gas recirculation device 13 may be equipped with an exhaust gas recirculation valve 27 for setting an exhaust gas recirculation rate and / or with an exhaust gas recirculation cooler 28 for cooling the recirculated exhaust gas.
  • FIG. 1 For symbolizing an operating state of the internal combustion engine 2, a flow of the fresh air is indicated by arrows 29, a flow of the exhaust gas by arrows 30 and a flow of the recirculated exhaust gas by arrows 31.
  • the introducing device 16 includes a fresh air passage portion 32 for guiding fresh air and a return passage portion 33 for guiding recirculated exhaust gas.
  • the return passage section 33 comprises a wrap-around section 34 and a feed section 35.
  • the wrap-around section 34 wraps around the fresh-air passage section 32 in the circumferential direction of the fresh-air passage section 32 over at least 360 °.
  • the return duct section 33 wraps around the fresh air duct section 32 multiple times and helically and thus over at least 720 °.
  • the feed section 35 is rectilinear and tangentially aligned with respect to the fresh air passage section 32.
  • the fresh air duct section 32 is here also rectilinear and equipped with at least one radial inlet opening 36 in an axial section assigned to the wrapping region 34.
  • at least one radial inlet opening 36 is provided, which extends annularly closed in the circumferential direction.
  • the inlet opening 36 divides the fresh air passage portion 32 so that the fresh air passage portion 32 has two axial portions 37 and 38, which are axially spaced from each other by the annular inlet opening 36.
  • the return channel section 33 is designed to cover the respective inlet opening 36. Further, the return passage portion 33 and the fresh air passage portion 32 are fluidly connected to each other through the respective intake port 36.
  • the introduction device 16 presented here is distinguished by a separator structure 39, which is designed such that it is suitable for separating solid and / or liquid particles entrained in the exhaust gas.
  • the separator structure 39 is arranged in or at the inlet opening 36.
  • the arrangement of the separator structure 39 at or in the inlet opening 36 or the assignment of the separator structure 39 to the respective inlet opening 36 takes place in such a way that the recirculated exhaust gas only passes through the separator structure 39 into the fresh air channel section 32.
  • the separator structure 39 can develop their separation effect and accordingly retain solid or liquid particles.
  • the return duct section 33 is expediently designed such that it is open radially inwardly in a region covering the inlet opening 36.
  • a U-shaped cross-sectional profile 40 which has the same cross-sectional area in all areas for the flow-through cross section in the return duct section 33.
  • other cross-sectional profiles 40 can be realized.
  • the cross-sectional profile 40 be designed differently in different areas.
  • the introduction device 16 is assembled from several individual parts.
  • the return duct section 33 is produced with the aid of a housing 41, which is attached to the fresh air duct section 32.
  • the housing 41 is correspondingly gas-tightly connected to the fresh air duct section 32, for example by gluing or welding.
  • the housing 41 is segmented in the circumferential direction in the preferred embodiment shown here in such a way that it has exactly two housing parts, namely a first housing part 42 and a second housing part 43.
  • the two housing parts 42, 43 extend in each case over 180 ° in the circumferential direction of the fresh air duct section 32 and thereby define two housing halves 42, 43.
  • the housing halves 42, 43 formed as half shells, which form the outer contour of the inlet device 16.
  • the first housing part 42 can be seen.
  • the second housing part 43 can be seen.
  • the two housing parts 42, 43 are secured together, for example by welding or gluing. Due to the multi-part construction of the housing 41, for example, the individual housing parts 42, 43 can be designed particularly cost-effectively as injection-molded parts.
  • the fresh air passage portion 32 is assembled from a plurality of parts.
  • the two areas 37, 38 are provided, each of which defines a tubular body.
  • the separator structure 39 is inserted, which is also annular for this purpose is configured and the two areas 37, 38, which axially adjacent to the separator structure 39, connects to each other.
  • the separator structure 39 is dimensioned so that it is flush radially inwardly with the adjoining areas 37, 38, so that the separator structure 39 fresh air side has no interference contour.
  • the separator structure 39 is also dimensioned such that it terminates radially outwardly flush with the regions 37, 38 adjoining it axially, so that no disturbing contour also arises on the outside, which facilitates the mounting of the housing 41.
  • the separator structure 39 has an annular carrier body 44 which has a plurality of radial openings 45. In these openings 45, a separator 46 and a separator 46 are arranged in each case.
  • the carrier body 44 is formed by at least two, here three ring elements 47, which extend in the circumferential direction, and a plurality of axially oriented web members 48 over which the ring members 47 are axially supported against each other.
  • the ring elements 47 and the web elements 48 define the openings 45 and form a corset for the separator material 46 or a holder for the respective separator element 46.
  • an annularly arranged separator material can be injection-molded with the plastic of the carrier body 44 in order to form the ring elements 47 and the web elements 48, thereby simultaneously segmenting the separator material into the individual separator elements 46.
  • the carrier body 44 is fixedly connected to the axially adjacent regions 37, 38 of the fresh air duct section 32, which can be advantageously realized again by means of welded joints or glued joints.
  • the separator structure 39 is a screen structure.
  • the individual separator elements 46 are then sieve elements.
  • a separator material then conveniently a screen material is used, which can be designed in one or more layers.
  • the screen material suitably has a fabric or a grid and may be made of metal or of plastic.

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

Claims (14)

  1. Dispositif d'injection pour des gaz, en particulier pour un dispositif de recirculation des gaz d'échappement (13),
    - avec une section de canal à air frais (32), destinée au guidage de l'air frais,
    - avec une section de canal de recirculation (33), destinée au guidage des gaz, en particulier de gaz d'échappement en recirculation,
    - dans lequel la section de canal de recirculation (33) entoure la section de canal à air frais (32) dans la direction de la circonférence et recouvre de ce fait au moins un orifice d'admission (36) radial de la section de canal à air frais (32),
    - dans lequel la section de canal de recirculation (33) est reliée de manière fluidique à la section de canal à air frais (32) par l'orifice d'admission (36) respectif,
    - dans lequel une structure de séparation (39), destinée à la séparation des particules transportées dans le gaz, en particulier dans les gaz d'échappement, est disposée dans ou au niveau de l'orifice d'admission (36) respectif,
    caractérisé en ce que
    - l'orifice d'admission (36) s'étend en forme de cercle dans la direction de la circonférence, - la structure de séparation (39) est conçue en forme de cercle et est insérée dans l'orifice d'admission (36).
  2. Dispositif d'injection selon la revendication 1,
    caractérisé en ce que
    la section de canal de recirculation (33) entoure de manière hélicoïdale la section de canal à air frais (32).
  3. Dispositif d'injection selon la revendication 2,
    caractérisé en ce que
    la section de canal de recirculation (33) entoure la section de canal à air frais (32) sur au moins 360°.
  4. Dispositif d'injection selon l'une des revendications 1 à 3,
    caractérisé en ce que
    la section de canal de recirculation (33) est ouverte radialement à l'intérieur dans une zone recouvrant l'orifice d'admission (36) respectif.
  5. Dispositif d'injection selon l'une des revendications 1 à 4,
    caractérisé en ce que
    la section de canal de recirculation (33) est formée dans un carter (41) qui est ' installé au niveau de la section de canal à air frais (32).
  6. Dispositif d'injection selon la revendication 5,
    caractérisé en ce que
    le carter (41) est segmenté dans la direction de la circonférence et présente au moins deux parties de carter (42, 43) qui sont fixées l'une à l'autre.
  7. Dispositif d'injection selon l'une des revendications 1 à 6,
    caractérisé en ce que
    l'orifice d'admission (36) forme un espace axial entre des zones contiguës (37, 38) de la section de canal à air frais (32), qui sont comblées par la structure de séparation (39).
  8. Dispositif d'injection selon la revendication 7,
    caractérisé en ce que
    la structure de séparation (39) présente un corps de support (44) en forme de cercle, qui est doté de plusieurs percées (45) radiales, dans lesquelles est respectivement disposé un élément de séparateur (46).
  9. Dispositif d'injection selon la revendication 8,
    caractérisé en ce que
    le corps de support (44) est relié de manière fixe aux zones (37, 38) de la section de canal à air frais (32) qui sont axialement limitrophes au corps de support (44).
  10. Dispositif d'injection selon l'une des revendications 1 à 9,
    caractérisé en ce que
    la structure de séparation (39) est conçue comme une structure en tamis.
  11. Dispositif de recirculation des gaz d'échappement, destiné à la recirculation des gaz d'échappement d'un moteur à combustion interne (2) provenant d'une installation de gaz d'échappement (6) et/ou de gaz de ventilation du moteur à combustion interne (2) et/ou d'un dégazage de réservoir dépendant d'une installation à air frais (3) du moteur à combustion interne (2),
    - dans lequel une conduite de recirculation (14) du dispositif de recirculation des gaz d'échappement (13) est raccordée à une conduite d'air frais (4) de l'installation à air frais (3) par l'intermédiaire d'un dispositif d'injection (16) selon l'une des revendications 1 à 10,
    - dans lequel la conduite de recirculation (14) est raccordée à la section de canal de recirculation (33) du dispositif d'injection (16),
    - dans lequel la section de canal à air frais (32) du dispositif d'injection (16) est intégrée dans la conduite d'air frais (4).
  12. Dispositif de recirculation des gaz d'échappement selon la revendication 11,
    caractérisé en ce que
    un refroidisseur de recirculation (28) est disposé dans la conduite de recirculation (14), en amont du dispositif d'injection (16).
  13. Moteur à combustion interne, en particulier d'un véhicule,
    - avec une installation de gaz d'échappement (6) destinée au refoulement de gaz d'échappement provenant du moteur à combustion interne (2),
    - avec une installation à air frais (3) destinée à l'approvisionnement en air frais à destination du moteur à combustion interne (2),
    - avec un dispositif de recirculation des gaz d'échappement (13) selon la revendication 11 ou 12.
  14. Moteur à combustion interne selon la revendication 13,
    caractérisé en ce que
    - une turbine (9) d'une turbosoufflante à gaz d'échappement (8) est disposée dans l'installation de gaz d'échappement (6),
    - un compresseur (11) de la turbosoufflante à gaz d'échappement (8) est disposé dans l'installation à air frais (3),
    - la conduite de recirculation (14) est raccordée à la conduite de gaz d'échappement (7), en aval de la turbine (9),
    - le dispositif d'injection (16) est disposé au niveau de la conduite d'air frais (4), en amont du compresseur (11).
EP13159883.1A 2012-03-28 2013-03-19 Dispositif d'introduction de gaz, en particulier un dispositif de récupération de gaz d'échappement Not-in-force EP2644874B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012205027A DE102012205027A1 (de) 2012-03-28 2012-03-28 Einleiteinrichtung für Gase, insbesondere eine Abgasrückführeinrichtung

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EP2644874A2 EP2644874A2 (fr) 2013-10-02
EP2644874A3 EP2644874A3 (fr) 2013-10-23
EP2644874B1 true EP2644874B1 (fr) 2015-10-21

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DE (1) DE102012205027A1 (fr)

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DE102014217334A1 (de) * 2014-08-29 2016-03-03 Mahle International Gmbh Nebenschlussresonator für eine Frischluftanlage einer Brennkraftmaschine
DE102015200196A1 (de) 2015-01-09 2016-07-14 Elringklinger Ag Mischvorrichtung, Verbrennungsmotor und Verfahren zur Herstellung einer Mischvorrichtung
DE102016118722B4 (de) 2016-10-04 2022-09-01 Engineering Center Steyr Gmbh & Co. Kg Verbrennungskraftmaschine für ein Kraftfahrzeug
EP3533990A1 (fr) * 2018-02-28 2019-09-04 Mann + Hummel Gmbh Séparateur de condensat à monter verticalement
FR3086702B1 (fr) * 2018-09-27 2020-12-11 Renault Sas Systeme de recirculation des gaz d'echappement a l'admission d'un moteur, comprenant une structure poreuse
DE102018221964A1 (de) * 2018-12-17 2020-06-18 Mahle International Gmbh Schalldämpfer und Frischluftleitung
DE102020006783A1 (de) 2020-11-05 2022-05-05 Daimler Ag Einleitvorrichtung für eine Verbrennungskraftmaschine
AT524259A1 (de) * 2021-06-17 2022-04-15 Avl List Gmbh Einlasssammler für eine brennkraftmaschine

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EP1867865A2 (fr) * 2006-06-13 2007-12-19 Honeywell International Inc. Mélangeur de recirculation de gaz d'échappement
FR2954412A1 (fr) * 2009-12-22 2011-06-24 Valeo Sys Controle Moteur Sas Moteur a combustion interne integrant un dispositif de recirculation des gaz d'echappement

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WO2005090773A2 (fr) * 2004-03-18 2005-09-29 Fev Motorentechnik Gmbh Recyclage de gaz d'echappement
CN101512122B (zh) * 2006-09-13 2012-09-05 博格华纳公司 排出空气冷却器在涡轮增压器中的整合
DE202007005986U1 (de) 2007-04-24 2008-09-04 Mann+Hummel Gmbh Verbrennungsluft- und Abgasanordnung eines Verbrennungsmotors
DE102007058603A1 (de) 2007-12-04 2009-06-10 Daimler Ag Abgasturbolader für eine Brennkraftmaschine und Verfahren zum Schalten einer Luftführungsvorrichtung eines Abgasturboladers
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FR2954412A1 (fr) * 2009-12-22 2011-06-24 Valeo Sys Controle Moteur Sas Moteur a combustion interne integrant un dispositif de recirculation des gaz d'echappement

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DE102012205027A1 (de) 2013-10-02
EP2644874A2 (fr) 2013-10-02

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