WO2006070088A1 - Device for trapping combustion air of an internal combustion engine - Google Patents

Device for trapping combustion air of an internal combustion engine Download PDF

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Publication number
WO2006070088A1
WO2006070088A1 PCT/FR2005/003107 FR2005003107W WO2006070088A1 WO 2006070088 A1 WO2006070088 A1 WO 2006070088A1 FR 2005003107 W FR2005003107 W FR 2005003107W WO 2006070088 A1 WO2006070088 A1 WO 2006070088A1
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WO
WIPO (PCT)
Prior art keywords
air
orifice
outlet
air inlet
engine
Prior art date
Application number
PCT/FR2005/003107
Other languages
French (fr)
Inventor
Jean-Charles Pichon
Original Assignee
Peugeot Citroen Automobiles S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles S.A. filed Critical Peugeot Citroen Automobiles S.A.
Priority to EP05825887A priority Critical patent/EP1831535A1/en
Publication of WO2006070088A1 publication Critical patent/WO2006070088A1/en

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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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10013—Means upstream of the air filter; Connection to the ambient air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/02—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
    • 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
    • F02M35/02—Air cleaners
    • F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
    • 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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10262—Flow guides, obstructions, deflectors or the like
    • 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
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/161—Arrangement of the air intake system in the engine compartment, e.g. with respect to the bonnet or the vehicle front face
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a device for capturing combustion air from an internal combustion engine located at the front of a motor vehicle.
  • Internal combustion engines typically comprise an air intake line comprising an air filter which receives the air captured in a given area of the vehicle. The air thus captured is then channeled to the combustion chambers of the engine.
  • This line of admission must be the compromise between several divergent criteria, such as, for example, acoustic aspects, performance, the temperature of the captured air, pressure drops and reliability.
  • a first solution is to capture the intake air at the front of the vehicle and to channel this air directly into the air filter. But, in this case, it may occur water infiltration when driving in the rain or during the passage of a ford leading to failures of certain organs and possibly a water penetration into the combustion chambers of the engine. Moreover, during a deep fording, the water arrives in waves and not in drops. This water is sucked which causes the engine to break
  • Another solution is to capture the air necessary for the combustion of the engine in a dry zone located below the engine hood.
  • This capture zone is preferably isolated from the hot sources and the air flow leaving the exchangers by creating for example through partitions, a cold zone.
  • This capture zone can also receive additional air by means of a deflector which captures the air in front of the front of the vehicle for example at the shield.
  • the main disadvantage of this arrangement lies in the difficulty of capturing the fresh air, while maintaining the capture zone sufficiently tight and while drawing the air as dense as possible, ie the coldest possible.
  • the location of the capture area depends on the style and the architecture of the vehicle, that is to say the shape of the implantation of the various elements making up the front part of this vehicle so that for each type vehicle, the layout is different.
  • the aim of the invention is to propose a capture device which avoids these drawbacks and which makes it possible to obtain a good filling of the engine with combustion air and to allow taxiing in the rain and fording a deep fording, even with suction. air in front of the vehicle.
  • the subject of the invention is therefore a device for capturing combustion air from an internal combustion engine situated at the front of a motor vehicle, characterized in that it comprises an enclosure comprising a first inlet orifice. of air connected to a suction duct opening into the front part of the vehicle, an intake air outlet connected to a discharge duct of this air to said engine, a second additional air inlet port arranged opposite the outlet orifice, means for preventing the air admitted by the first inlet orifice from penetrating directly into the outlet orifice and at least one water discharge orifice provided at the outlet orifice. base of this enclosure.
  • the first air inlet orifice opens into the chamber above the outlet orifice and the second air inlet orifice
  • said means comprises a deflector extending between the outlet orifice and the second inlet orifice
  • the deflector is in the form of a half-tube disposed on the upper part of the outlet orifice and the second air inlet orifice, and
  • FIG. 1 is a partial schematic view from above of a compartment of an engine of a motor vehicle equipped with a pickup device according to the invention
  • FIG. 2 is a schematic sectional view along line 2-2 of FIG. 1, and
  • FIG. 3 is a schematic perspective view of the capture device according to the invention.
  • FIG. 1 there is diagrammatically a front portion of a motor vehicle which comprises, in a conventional manner, a motor compartment 1 delimited, at the front by a front face 2 or calender and by optical blocks 3.
  • This engine compartment 1 is delimited on each side by a wing 4.
  • the engine compartment 1 encloses, inter alia, an internal combustion engine 5, heat exchangers 6, a battery 7 and a combustion air intake line, generally designated by the reference 10.
  • This line 10 d In the direction of circulation of this intake air, the air intake consists of a collection device designated by the general reference 20, an air filter 11 connected to the collection device 20, a ramp 12 for distribution of the combustion air in each combustion chamber of the engine 5.
  • the device 20 for capturing combustion air disposed in the engine compartment 1 comprises an enclosure 21 which, in the embodiment shown in these figures, is constituted by a box 22 of generally parallelepipedal shape.
  • This enclosure 21 delimited by the box 22 comprises a first air inlet orifice 23 connected to a suction pipe 24 which has an upstream end 25 opening into the front part of the motor vehicle and, preferably, in front of the exchangers of heat 6 to capture fresh air.
  • the first air inlet opening 23 opens at the top of the enclosure 21 of the box 22.
  • This enclosure 21 also comprises an air outlet orifice 26 admitted by the 23 and which is connected to a delivery pipe 27 of this air towards the air filter 11 and the air intake manifold 12 in the combustion chambers of the engine 5.
  • the enclosure 21 also has a second orifice 28 for additional air inlet disposed opposite the outlet orifice 26, as shown in FIG. 3.
  • This second orifice 28 for additional air inlet opens into the engine compartment 1 and, preferably, near an optical block 3 which constitutes a protective plate.
  • the enclosure 21 of the box 22 is, finally, equipped with a means operating according to the principle of a baffle to prevent the air admitted by the first inlet orifice 23 from penetrating directly into the outlet orifice 26 and which is formed by a baffle extending between this outlet port 26 and the second air inlet port 28.
  • This deflector 30 is in the form of a half tube disposed on the upper part of the inlet orifice 26 and the second orifice 28 of air inlet. This deflector 30 provides on each side a space 31 (FIG 2) allowing the air admitted through the orifice 23 to pass on either side of said deflector 30 and to be evacuated from the enclosure 21 by the outlet port 26 and conduit 27.
  • the enclosure 21 of the box 22 is, at its base, provided with at least one orifice 31 for discharging the water which possibly enters said enclosure 21.
  • the air When the vehicle rolls, the air enters through the orifice 25 in the conduit 24, then into the enclosure 21 of the box 22 by the first orifice 23 of air inlet.
  • the air flow thus captured bypasses the deflector 30 and leaves the chamber 21 through the orifice 26 and is then directed towards the air filter 11 through the conduit 27.
  • the air d intake After passing through the air filter 11 the air d intake is directed to each combustion chamber by the ramp 12.
  • the front suction of the combustion air that is to say the coldest possible air, optimizes the performance of the engine.
  • the water possibly contained in this intake air is not captured by the outlet orifice 26 and the pipe 27 due to the presence of the deflector 30 and this water falls into the bottom of the enclosure 21 where it is discharged through the orifices 31.
  • the presence of the second orifice 28 for additional air intake which opens in the engine compartment 1 of the vehicle near an area protected by the optical block 3 allows to preserve the pressure losses for the high operating speeds of the engine, because the air flow sucked by the second port 28 is directly channeled towards the outlet orifice 26 and the duct 27 without passing through the deflector 30.
  • the capture device according to the invention can capture dry air close to the outside temperature, in all driving conditions of the motor vehicle.
  • box constituting the capture device is independent of the style of the vehicle and can be installed in all types of vehicle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The invention concerns a device (20) for trapping combustion air of an internal combustion engine, characterized in that it comprises a chamber (21) including a first air inlet (23) connected to a suction duct (24), and air outlet (26) for the input air connected to a duct for delivering (27) said air, a second additional air inlet (26) arranged opposite the outlet, means (30) for preventing input air admitted by the first inlet (23) from penetrating directly into the outlet (26) and at least a water discharge orifice (31) provided at the bottom of said chamber.

Description

Dispositif de captation d'air de combustion d'un moteur à combustion interne.Device for capturing combustion air from an internal combustion engine.
La présente invention concerne un dispositif de captation d'air de combustion d'un moteur à combustion interne situé à l'avant d'un véhciule automobile.The present invention relates to a device for capturing combustion air from an internal combustion engine located at the front of a motor vehicle.
Les moteurs à combustion interne comportent, de manière classique, une ligne d'admission d'air comprenant un filtre à air qui reçoit l'air capté dans une zone déterminée du véhicule. L'air ainsi capté est ensuite canalisé jusqu'aux chambres de combustion du moteur. Cette ligne d'admission doit être le compromis entre plusieurs critères divergents, comme par exemple les aspects acoustiques, les performances, la température de l'air capté, les pertes de charge et la fiabilité.Internal combustion engines typically comprise an air intake line comprising an air filter which receives the air captured in a given area of the vehicle. The air thus captured is then channeled to the combustion chambers of the engine. This line of admission must be the compromise between several divergent criteria, such as, for example, acoustic aspects, performance, the temperature of the captured air, pressure drops and reliability.
Pour tenter de répondre à ces différents critères, plusieurs solutions pour capter l'air d'admission d'un moteur à combustion interne sont couramment utilisées.In an attempt to meet these various criteria, several solutions for capturing the intake air of an internal combustion engine are commonly used.
Une première solution consiste à capter l'air d'admission au niveau de la façade du véhicule et à canaliser cet air directement dans le filtre à air. Mais, dans ce cas, il peut se produire des infiltrations d'eau lors de roulage sous la pluie ou lors du passage d'un gué entraînant des défaillances de certains organes et éventuellement une pénétration d'eau dans les chambres de combustion du moteur. De plus, lors d'un passage de gué profond, l'eau arrive par vagues et non par gouttes. Cette eau est aspirée ce qui entraîne la casse du moteurA first solution is to capture the intake air at the front of the vehicle and to channel this air directly into the air filter. But, in this case, it may occur water infiltration when driving in the rain or during the passage of a ford leading to failures of certain organs and possibly a water penetration into the combustion chambers of the engine. Moreover, during a deep fording, the water arrives in waves and not in drops. This water is sucked which causes the engine to break
Afin d'éviter ces inconvénients, une autre solution consiste à capter l'air nécessaire à la combustion du moteur dans une zone sèche située au-dessous du capot moteur. Cette zone de captation est de préférence isolée des sources chaudes et du flux d'air sortant des échangeurs en créant par exemple par l'intermédiaire de cloisons, une zone froide. Cette zone de captation peut également recevoir de l'air supplémentaire au moyen d'un déflecteur qui capte l'air devant la face avant du véhicule par exemple au niveau du bouclier.To avoid these disadvantages, another solution is to capture the air necessary for the combustion of the engine in a dry zone located below the engine hood. This capture zone is preferably isolated from the hot sources and the air flow leaving the exchangers by creating for example through partitions, a cold zone. This capture zone can also receive additional air by means of a deflector which captures the air in front of the front of the vehicle for example at the shield.
Mais, l'inconvénient principal de cette disposition réside dans la difficulté pour capter l'air frais, tout en conservant la zone de captation suffisamment étanche et tout en aspirant l'air le plus dense possible c'est à dire le plus froid possible.But, the main disadvantage of this arrangement lies in the difficulty of capturing the fresh air, while maintaining the capture zone sufficiently tight and while drawing the air as dense as possible, ie the coldest possible.
De plus, l'implantation de la zone de captation dépend du style et de l'architecture du véhicule, c'est à dire de la forme de l'implantation des différents éléments composant la partie avant de ce véhicule si bien que pour chaque type de véhicule, la disposition est différente.In addition, the location of the capture area depends on the style and the architecture of the vehicle, that is to say the shape of the implantation of the various elements making up the front part of this vehicle so that for each type vehicle, the layout is different.
L'invention a pour but de proposer un dispositif de captation qui évite ces inconvénients et qui permet d'obtenir un bon remplissage du moteur en air de combustion et de permettre le roulage sous la pluie et le passage en gué profond, même avec une aspiration de l'air en façade du véhicule.The aim of the invention is to propose a capture device which avoids these drawbacks and which makes it possible to obtain a good filling of the engine with combustion air and to allow taxiing in the rain and fording a deep fording, even with suction. air in front of the vehicle.
L'invention a donc pour objet un dispositif de captation d'air de combustion d'un moteur à combustion interne situé à l'avant d'un véhicule automobile, caractérisé en ce qu'il comprend une enceinte comportant un premier orifice d'entrée d'air raccordé à un conduit d'aspiration débouchant dans la partie avant du véhicule, un orifice de sortie de l'air admis raccordé à un conduit de refoulement de cet air vers ledit moteur, un second orifice d'entrée d'air supplémentaire disposé en vis à vis de l'orifice de sortie, un moyen pour empêcher l'air admis par le premier orifice d'entrée de pénétrer directement dans l'orifice de sortie et au moins un orifice d'évacuation d'eau ménagé à la base de cette enceinte.The subject of the invention is therefore a device for capturing combustion air from an internal combustion engine situated at the front of a motor vehicle, characterized in that it comprises an enclosure comprising a first inlet orifice. of air connected to a suction duct opening into the front part of the vehicle, an intake air outlet connected to a discharge duct of this air to said engine, a second additional air inlet port arranged opposite the outlet orifice, means for preventing the air admitted by the first inlet orifice from penetrating directly into the outlet orifice and at least one water discharge orifice provided at the outlet orifice. base of this enclosure.
Selon d'autres caractéristiques :According to other characteristics:
- le premier orifice d'entrée d'air débouche dans l'enceinte au- dessus de l'orifice de sortie et du second orifice d'entrée d'air,the first air inlet orifice opens into the chamber above the outlet orifice and the second air inlet orifice,
- ledit moyen comprend un déflecteur s'étendant entre l'orifice de sortie et le second orifice d'entrée,said means comprises a deflector extending between the outlet orifice and the second inlet orifice,
- le déflecteur a la forme d'un demi tube disposé sur la partie supérieure de l'orifice de sortie et du second orifice d'entrée d'air, etthe deflector is in the form of a half-tube disposed on the upper part of the outlet orifice and the second air inlet orifice, and
- l'enceinte est formée par une boîte parallélépipédique. D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui va suivre, donnée à titre d'exemple et faite en référence aux dessins annexés, sur lesquels : - la Fig. 1 est une vue schématique partielle et de dessus d'un compartiment d'un moteur d'un véhicule automobile équipé d'un dispositif de captation, conforme à l'invention,- The enclosure is formed by a parallelepiped box. Other characteristics and advantages of the invention will appear on reading the following description, given by way of example and with reference to the appended drawings, in which: FIG. 1 is a partial schematic view from above of a compartment of an engine of a motor vehicle equipped with a pickup device according to the invention,
- la Fig. 2 est une vue schématique en coupe selon la ligne 2-2 de la Fig. 1 , etFIG. 2 is a schematic sectional view along line 2-2 of FIG. 1, and
- la Fig. 3 est une vue schématique en perspective du dispositif de captation conforme à l'invention.FIG. 3 is a schematic perspective view of the capture device according to the invention.
Sur la Fig. 1 , on a représenté schématiquement une partie avant d'un véhicule automobile qui comporte, de manière classique, un compartiment moteur 1 délimité, à l'avant par une face avant 2 ou calendre et par des blocs optiques 3. Ce compartiment moteur 1 est délimité de chaque côté, par une aile 4.In FIG. 1, there is diagrammatically a front portion of a motor vehicle which comprises, in a conventional manner, a motor compartment 1 delimited, at the front by a front face 2 or calender and by optical blocks 3. This engine compartment 1 is delimited on each side by a wing 4.
Le compartiment moteur 1 renferme, entre autres, un moteur à combustion interne 5, des échangeurs de chaleur 6, une batterie 7 et une ligne d'admission d'air de combustion, désignée dans son ensemble par la référence 10. Cette ligne 10 d'admission d'air se compose, dans le sens de circulation de cet air d'admission, d'un dispositif de captation désigné par la référence générale 20, d'un filtre à air 11 relié au dispositif de captation 20, d'une rampe 12 de distribution de l'air de combustion dans chaque chambre de combustion du moteur 5.The engine compartment 1 encloses, inter alia, an internal combustion engine 5, heat exchangers 6, a battery 7 and a combustion air intake line, generally designated by the reference 10. This line 10 d In the direction of circulation of this intake air, the air intake consists of a collection device designated by the general reference 20, an air filter 11 connected to the collection device 20, a ramp 12 for distribution of the combustion air in each combustion chamber of the engine 5.
Ainsi que représenté notamment sur les Figs. 2 et 3, le dispositif 20 de captation d'air de combustion disposé dans le compartiment moteur 1 comprend une enceinte 21 qui, dans l'exemple de réalisation représenté sur ces figures, est constituée par une boîte 22 de forme générale parallélépipédique. Cette enceinte 21 délimitée par la boîte 22 comporte un premier orifice 23 d'entrée d'air raccordé à un conduit 24 d'aspiration qui comporte une extrémité amont 25 débouchant dans la partie avant du véhicule automobile et, de préférence, devant les échangeurs de chaleur 6 afin de capter de l'air frais.As shown in particular in FIGS. 2 and 3, the device 20 for capturing combustion air disposed in the engine compartment 1 comprises an enclosure 21 which, in the embodiment shown in these figures, is constituted by a box 22 of generally parallelepipedal shape. This enclosure 21 delimited by the box 22 comprises a first air inlet orifice 23 connected to a suction pipe 24 which has an upstream end 25 opening into the front part of the motor vehicle and, preferably, in front of the exchangers of heat 6 to capture fresh air.
Ainsi que représenté sur les figures, le premier orifice 23 d'entrée d'air débouche à la partie supérieure de l'enceinte 21 de la boîte 22. Cette enceinte 21 comporte également un orifice 26 de sortie de l'air admis par l'orifice 23 et qui est raccordé à un conduit de refoulement 27 de cet air en direction du filtre à air 11 et de la rampe 12 d'admission d'air dans les chambres de combustion du moteur 5.As shown in the figures, the first air inlet opening 23 opens at the top of the enclosure 21 of the box 22. This enclosure 21 also comprises an air outlet orifice 26 admitted by the 23 and which is connected to a delivery pipe 27 of this air towards the air filter 11 and the air intake manifold 12 in the combustion chambers of the engine 5.
L'enceinte 21 comporte aussi un second orifice 28 d'entrée d'air supplémentaire disposé en vis à vis de l'orifice de sortie 26, ainsi que montré à la Fig. 3. Ce second orifice 28 d'entrée d'air supplémentaire débouche dans le compartiment moteur 1 et, de préférence, à proximité d'un bloc optique 3 qui constitue une plaque de protection.The enclosure 21 also has a second orifice 28 for additional air inlet disposed opposite the outlet orifice 26, as shown in FIG. 3. This second orifice 28 for additional air inlet opens into the engine compartment 1 and, preferably, near an optical block 3 which constitutes a protective plate.
L'enceinte 21 de la boîte 22 est, enfin, équipée d'un moyen fonctionnant selon le principe d'une chicane pour empêcher l'air admis par le premier orifice d'entrée 23 de pénétrer directement dans l'orifice de sortie 26 et qui est formé par un déflecteur s'étendant entre cet orifice de sortie 26 et le second orifice 28 d'entrée d'air. Ce déflecteur 30 a la forme d'un demi tube disposé sur la partie supérieure de l'orifice d'entrée 26 et du second orifice 28 d'entrée d'air. Ce déflecteur 30 ménage de chaque côté un espace 31 (Fig. 2) permettant à l'air admis par l'orifice 23 de passer de part et d'autre dudit déflecteur 30 et d'être évacué de l'enceinte 21 par l'orifice de sortie 26 et le conduit 27.The enclosure 21 of the box 22 is, finally, equipped with a means operating according to the principle of a baffle to prevent the air admitted by the first inlet orifice 23 from penetrating directly into the outlet orifice 26 and which is formed by a baffle extending between this outlet port 26 and the second air inlet port 28. This deflector 30 is in the form of a half tube disposed on the upper part of the inlet orifice 26 and the second orifice 28 of air inlet. This deflector 30 provides on each side a space 31 (FIG 2) allowing the air admitted through the orifice 23 to pass on either side of said deflector 30 and to be evacuated from the enclosure 21 by the outlet port 26 and conduit 27.
L'enceinte 21 de la boîte 22 est, à sa base, munie d'au moins un orifice 31 d'évacuation de l'eau qui pénètre éventuellement dans ladite enceinte 21.The enclosure 21 of the box 22 is, at its base, provided with at least one orifice 31 for discharging the water which possibly enters said enclosure 21.
Lorsque le véhicule roule, l'air pénètre par l'orifice 25 dans le conduit 24, puis dans l'enceinte 21 de la boîte 22 par le premier orifice 23 d'entrée d'air. Le flux d'air ainsi capté contourne le déflecteur 30 et sort de l'enceinte 21 par l'orifice 26 et est ensuite dirigé vers le filtre à air 11 par le conduit 27. Après avoir traversé le filtre à air 11 l'air d'admission est dirigé vers chaque chambre de combustion par la rampe 12.When the vehicle rolls, the air enters through the orifice 25 in the conduit 24, then into the enclosure 21 of the box 22 by the first orifice 23 of air inlet. The air flow thus captured bypasses the deflector 30 and leaves the chamber 21 through the orifice 26 and is then directed towards the air filter 11 through the conduit 27. After passing through the air filter 11 the air d intake is directed to each combustion chamber by the ramp 12.
L'aspiration en façade de l'air de combustion, c'est à dire de l'air le plus froid possible, permet d'optimiser les performances du moteur. L'eau contenue éventuellement dans cet air d'admission n'est pas captée par l'orifice de sortie 26 et la conduite 27 du fait de la présence du déflecteur 30 et cette eau tombe dans le fond de l'enceinte 21 où elle est évacuée par les orifices 31. La présence du second orifice 28 d'admission d'air supplémentaire qui débouche dans le compartiment moteur 1 du véhicule à proximité d'une zone protégée par le bloc optique 3 permet de préserver les pertes de charge pour les hauts régimes de fonctionnement du moteur, car le flux d'air aspiré par le second orifice 28 est directement canalisé vers l'orifice de sortie 26 et le conduit 27 sans passer par le déflecteur 30.The front suction of the combustion air, that is to say the coldest possible air, optimizes the performance of the engine. The water possibly contained in this intake air is not captured by the outlet orifice 26 and the pipe 27 due to the presence of the deflector 30 and this water falls into the bottom of the enclosure 21 where it is discharged through the orifices 31. The presence of the second orifice 28 for additional air intake which opens in the engine compartment 1 of the vehicle near an area protected by the optical block 3 allows to preserve the pressure losses for the high operating speeds of the engine, because the air flow sucked by the second port 28 is directly channeled towards the outlet orifice 26 and the duct 27 without passing through the deflector 30.
Dans le cas du roulage du véhicule automobile équipé d'un tel dispositif de captation d'air sur route mouillée avec des projections d'eau importantes par les véhicules le précédant, les gouttes d'eau éventuellement aspirées ruissellent sur le déflecteur 30 et l'air aspiré par le second orifice d'entrée 28 à proximité du bloc optique 3 crée un effet de paroi dans l'enceinte 21 de sorte que les gouttes d'eau ruissellent le long des parois internes de la boîte 22 et sont évacuées par les orifices 31.In the case of driving the motor vehicle equipped with such a device for capturing air on a wet road with significant water splash by the vehicles preceding it, any water drops sucked up dripping on the deflector 30 and the The air drawn in by the second inlet orifice 28 near the optical block 3 creates a wall effect in the enclosure 21 so that the drops of water flow along the internal walls of the box 22 and are discharged through the orifices. 31.
Le dispositif de captation selon l'invention permet de capter de l'air sec proche de la température extérieure, dans toutes les conditions de roulage du véhicule automobile.The capture device according to the invention can capture dry air close to the outside temperature, in all driving conditions of the motor vehicle.
Enfin, la boîte constituant le dispositif de captation est indépendante du style du véhicule et peut être installée dans tous les types de véhicule. Finally, the box constituting the capture device is independent of the style of the vehicle and can be installed in all types of vehicle.

Claims

REVENDICATIONS
1. Dispositif de captation d'air de combustion d'un moteur à combustion interne situé à l'avant d'un véhicule automobile, caractérisé en ce qu'il comprend une enceinte (21) comportant un premier orifice (23) d'entrée d'air raccordé à un conduit d'aspiration (24) débouchant dans la partie avant du véhicule, un orifice de sortie (26) de l'air admis et raccordé à un conduit (27) de refoulement ce cet air vers ledit moteur, un second orifice (28) d'entrée d'air supplémentaire disposé en vis à vis de l'orifice de sortie (26), un moyen (30) pour empêcher l'air admis par le premier orifice d'entrée (23) de pénétrer directement dans l'orifice de sortie (26) et au moins un orifice (31 ) d'évacuation d'eau ménagé à la base de cette enceinte (21).1. Device for capturing combustion air from an internal combustion engine located at the front of a motor vehicle, characterized in that it comprises an enclosure (21) having a first orifice (23) input of air connected to a suction duct (24) opening into the front part of the vehicle, an outlet orifice (26) of the intake air and connected to a duct (27) for delivering this air to said engine, a second additional air inlet opening (28) disposed opposite the outlet port (26), means (30) for preventing air admitted through the first inlet port (23) from penetrate directly into the outlet orifice (26) and at least one orifice (31) for discharging water at the base of this chamber (21).
2. Dispositif selon la revendication 1 , caractérisé en ce que le premier orifice d'entrée d'air (23) débouche dans l'enceinte (21 ) au-dessus de l'orifice de sortie (26) et du second orifice d'entrée d'air (28). 2. Device according to claim 1, characterized in that the first air inlet opening (23) opens into the chamber (21) above the outlet orifice (26) and the second orifice of air inlet (28).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que ledit moyen comprend un déflecteur (30) s'étendant entre l'orifice de sortie (26) et le second orifice d'entrée d'air (28).3. Device according to claim 1 or 2, characterized in that said means comprises a baffle (30) extending between the outlet port (26) and the second air inlet port (28).
4. Dispositif selon la revendication 3, caractérisé en ce que le déflecteur (30) a la forme d'un demi tube disposé sur la partie supérieure de l'orifice de sortie (26) et du second orifice d'entrée d'air (28).4. Device according to claim 3, characterized in that the baffle (30) is in the form of a half-tube disposed on the upper part of the outlet orifice (26) and the second air inlet orifice ( 28).
5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'enceinte (21 ) est formée par une boîte parallélépipédique (22). 5. Device according to any one of the preceding claims, characterized in that the enclosure (21) is formed by a parallelepiped box (22).
PCT/FR2005/003107 2004-12-28 2005-12-12 Device for trapping combustion air of an internal combustion engine WO2006070088A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05825887A EP1831535A1 (en) 2004-12-28 2005-12-12 Device for trapping combustion air of an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0413993 2004-12-28
FR0413993A FR2879971B1 (en) 2004-12-28 2004-12-28 COMBUSTION AIR CAPTATION DEVICE OF AN INTERNAL COMBUSTION ENGINE

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WO2006070088A1 true WO2006070088A1 (en) 2006-07-06

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FR (1) FR2879971B1 (en)
WO (1) WO2006070088A1 (en)

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WO2014086895A1 (en) * 2012-12-06 2014-06-12 Mann+Hummel Gmbh Intake module of an air intake tract of an internal combustion engine
CN104727995A (en) * 2013-12-19 2015-06-24 广州汽车集团股份有限公司 Air feeding structure and system for automobile and corresponding automobile

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FR2920704B1 (en) * 2007-09-11 2009-11-27 Peugeot Citroen Automobiles Sa FRONT PART OF A MOTOR VEHICLE COMPRISING A WATER DECANTATION DEVICE
FR2921591B1 (en) * 2007-09-27 2010-02-19 Peugeot Citroen Automobiles Sa FRONT AIR INTAKE COLLAR WITH PEDESTRIAN IMPACT TREATMENT DEVICE AND INTEGRATED WATER DECANTATION DEVICE FOR A MOTOR VEHICLE
JP5227063B2 (en) 2008-04-10 2013-07-03 株式会社イノアックコーポレーション Intake duct for vehicle
CN102741537B (en) * 2010-01-29 2016-01-06 唐纳森公司 For separator assembly and the engine airflow entrance structure of air-strainer
CN103452711B (en) * 2012-05-31 2016-08-03 重庆长安汽车股份有限公司 A kind of air inflow structure of automobile air cleaner
FR2992365B1 (en) * 2012-06-22 2015-08-21 Peugeot Citroen Automobiles Sa AIR INTAKE DEVICE FOR COMBUSTION ENGINE
CN104791156A (en) * 2015-04-16 2015-07-22 安徽安凯汽车股份有限公司 Lateral-air-intake waterproof structure for passenger car

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CN104727995A (en) * 2013-12-19 2015-06-24 广州汽车集团股份有限公司 Air feeding structure and system for automobile and corresponding automobile

Also Published As

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FR2879971B1 (en) 2007-03-30
EP1831535A1 (en) 2007-09-12
FR2879971A1 (en) 2006-06-30

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