FR2914695A1 - INTAKE AIR SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE - Google Patents

INTAKE AIR SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE Download PDF

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Publication number
FR2914695A1
FR2914695A1 FR0754378A FR0754378A FR2914695A1 FR 2914695 A1 FR2914695 A1 FR 2914695A1 FR 0754378 A FR0754378 A FR 0754378A FR 0754378 A FR0754378 A FR 0754378A FR 2914695 A1 FR2914695 A1 FR 2914695A1
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FR
France
Prior art keywords
intake device
air
ducts
boss
combustion engine
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.)
Granted
Application number
FR0754378A
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French (fr)
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FR2914695B1 (en
Inventor
Julien Ange Maestroni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR0754378A priority Critical patent/FR2914695B1/en
Priority to EP08788042A priority patent/EP2132424A2/en
Priority to PCT/FR2008/050516 priority patent/WO2008132406A2/en
Publication of FR2914695A1 publication Critical patent/FR2914695A1/en
Application granted granted Critical
Publication of FR2914695B1 publication Critical patent/FR2914695B1/en
Expired - Fee Related 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
    • F02M29/00—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture
    • F02M29/04—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture having screens, gratings, baffles or the like
    • F02M29/06—Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture having screens, gratings, baffles or the like generating whirling motion of mixture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
    • 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
    • F02M35/10026—Plenum chambers
    • F02M35/10032—Plenum chambers specially shaped or arranged connecting duct between carburettor or air inlet duct and the plenum chamber; specially positioned carburettors or throttle bodies with respect to the plenum chamber
    • 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
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10118—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements with variable cross-sections of intake ducts along their length; Venturis; Diffusers
    • 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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/112—Intake manifolds for engines with cylinders all in one line
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

Dispositif d'admission d'air d'alimentation pour moteur à combustion interne comportant un répartiteur coudé (1) d'où sont issus à partir d'une série d'embranchements (4a, 4b, 4c, 4d) sensiblement alignés, des conduits d'admission (2a, 2b, 2c, 2d) rejoignant chaque cylindre du moteur, caractérisé en ce que certains conduits présentent au niveau de leur embranchement une bosse (6) rétrécissant leur section du côté de l'arrivée d'air.Supply air intake device for an internal combustion engine comprising an elbow distributor (1) from which a plurality of substantially aligned branches (4a, 4b, 4c, 4d) are formed from ducts intake (2a, 2b, 2c, 2d) joining each cylinder of the engine, characterized in that some ducts have at their branch a boss (6) narrowing their section on the side of the air inlet.

Description

- 1 - DISPOSITIF D'ADMISSION D'AIR D'ALIMENTATION POUR MOTEUR A COMBUSTION- 1 - SUPPLY AIR INTAKE DEVICE FOR COMBUSTION ENGINE

INTERNE La présente invention concerne un dispositif 5 d'admission d'air d'alimentation dans les cylindres d'alimentation d'un moteur à combustion. Elle a pour a pour objet un dispositif d'admission d'air d'alimentation pour moteur à combustion interne comportant un répartiteur coudé, d'où sont issus, à 10 partir d'une série d'embranchements sensiblement alignés, des conduits d'admission rejoignant chaque cylindre du moteur. Elle a également pour objet un moteur, pourvu d'un tel dispositif d'admission. 15 Cette invention vise à favoriser un mouvement tourbillonnaire de type swirl , dans les cylindres de celui-ci, et trouve une application privilégiée, mais non exclusive, sur les moteurs Diesel. Elle vise en particulier à obtenir un mouvement 20 aérodynamique similaire, dans tous les conduits d'admission du moteur. Un répartiteur d'air d'admission coudé, peut présenter deux branches sensiblement parallèles, réunies par un coude à 180 . Un tel coude a un effet négatif sur 25 le swirl , en particulier dans les cylindres alimentés en dernier (c'est-à-dire les derniers cylindres, dans le sens d'écoulement d'air le long de la deuxième branche du répartiteur). - 2 - La présente invention a pour but de rehausser le niveau de swirl des derniers cylindres, de manière à contrecarrer la baisse de swirl , par rapport aux premiers cylindres, induite par le coude du répartiteur.  The present invention relates to a device 5 for supplying feed air into the feed rolls of a combustion engine. The subject of the invention is a feed air intake device for an internal combustion engine comprising an angled distributor, from which, from a series of substantially aligned branch lines, ducts of intake joining each cylinder of the engine. It also relates to an engine, provided with such an admission device. This invention aims to promote a swirl-like swirling motion in the cylinders thereof, and finds a preferred, but not exclusive, application to diesel engines. In particular, it aims to achieve similar aerodynamic motion in all engine intake ducts. An angled intake air distributor may have two substantially parallel branches, joined by a 180 bend. Such a bend has a negative effect on the swirl, particularly in the last fed cylinders (i.e. the last cylinders, in the air flow direction along the second branch of the tundish). . The object of the present invention is to increase the level of swirling of the last cylinders, so as to counteract the drop in swirl, compared with the first cylinders, induced by the elbow of the distributor.

Dans ce but, elle propose que ces conduits présentent, au niveau de leur embranchement sur le répartiteur, une bosse, rétrécissant leur section du côté de l'arrivée d'air. Les conduits concernés sont les conduits les plus éloignés de l'entrée d'air dans le dispositif, notamment les deux derniers dans le sens de l'écoulement d'air dans le répartiteur. D'autres caractéristiques et avantages de l'invention apparaîtront clairement à la lecture de la description suivante d'un mode de réalisation non limitatif de celle-ci, en se reportant aux dessins annexés, sur lesquels : - la figure 1 est une vue d'ensemble du dispositif d'admission, et - la figure 2 est une coupe selon A-A de la figure 1, - et la figure 3 est une section selon B-B, de la figure 2. Sur la figure 1, on a représenté un dispositif d'admission d'air d'alimentation pour moteur à combustion interne conforme à l'invention. Ce dispositif comporte un répartiteur coudé 1, présentant deux branches sensiblement parallèles, la et lb, réunies par un coude 5, à 180 . Des conduits d'admission 2a à 2d, rejoignant chaque cylindre 3 du moteur, sont issus du répartiteur 1, à partir d'une série d'embranchements 4a à 4d, sensiblement alignés sur sa branche inférieure la. Comme indiqué sur les schémas, certains conduits, en particulier les deux conduits 2c, 2d, les plus éloignés du coude, donc de l'entrée d'air (c'est-à-dire dans le sens de l'écoulement d'air dans le répartiteur), présentent au niveau de leurs embranchements 4c et 4d, une bosse 6 rétrécissant leur section du côté de l'arrivée d'air. Le but de cette bosse est de dévier l'air vers l'arrière du conduit, au niveau de son embranchement, pour générer un mouvement aérodynamique de type swirl , le long de celui-ci. Sur la figure 2, on voit que la bosse 6 forme un tremplin orientant le flux d'air pénétrant dans le conduit, vers l'arrière de celui-ci, par rapport au sens de l'écoulement d'air dans le répartiteur 1. La figure 2 montre également que la bosse 6 est centrée sur l'embranchement des conduits. Sur la section de la figure 3, on voit qu'elle présente, en section, une épaisseur décroissante de part et d'autre du centre du conduit, dans un plan perpendiculaire B-B, à l'axe du répartiteur. Comme montré sur le schéma, cette section 6a peut avoir par exemple une forme générale de croissant dans le plan de coupe. Il est souhaitable que la bosse soit centrée sur l'embranchement du conduit, mais sa forme peut être différente, pourvu quelle satisfasse à l'objectif recherché : dévier l'air vers l'arrière du conduit au niveau de son embranchement, pour générer un - 4 - mouvement aérodynamique de type swirl , le long de celui-ci. Selon le mode de réalisation non limitatif décrit ci-dessus, le moteur concerné est un moteur à quatre cylindres en ligne, et les embranchements munis d'une bosse de tremplin, sont les deux derniers dans le sens de l'écoulement de l'air. Toutefois ces dispositions n'ont aucun caractère d'obligation. L'invention trouve également son application sur tout type de moteur avec un nombre de cylindres différent. De même, les bosses peuvent être implantées uniquement sur le dernier cylindre, ou de manière générale, sur un nombre de cylindres différent de deux. Par ailleurs, il n'est pas impératif que toutes les bosses soient identiques. Sans sortir du cadre l'invention, elles peuvent donc avoir un profil différent selon les embranchements, au sein d'un même répartiteur. Dans ces conditions, est concerné par l'invention, tout type de moteur présentant au moins sur un de ses conduits d'admission, une bosse rétrécissant la section de ce conduit au niveau de son embranchement sur le répartiteur d'admission, du côté de l'arrivée d'air.25  For this purpose, it proposes that these conduits have, at their branch on the distributor, a bump, narrowing their section on the side of the air inlet. The ducts concerned are the ducts furthest from the air inlet in the device, in particular the last two ducts in the direction of the air flow in the distributor. Other characteristics and advantages of the invention will become clear from reading the following description of a non-limiting embodiment thereof, with reference to the appended drawings, in which: FIG. assembly of the intake device, and - Figure 2 is a section along AA of Figure 1, - and Figure 3 is a section according to BB, of Figure 2. In Figure 1, there is shown a device of supply air intake for an internal combustion engine according to the invention. This device comprises an angled distributor 1, having two substantially parallel branches, la and lb, joined by a bend 5, 180. Intake ducts 2a to 2d, joining each cylinder 3 of the engine, are derived from the distributor 1, from a series of branches 4a to 4d, substantially aligned on its lower branch la. As shown in the diagrams, some ducts, in particular the two ducts 2c, 2d, the farthest from the elbow, therefore the air inlet (that is to say in the direction of the air flow in the distributor), present at their branches 4c and 4d, a boss 6 shrinking their section on the side of the air inlet. The purpose of this hump is to divert the air towards the rear of the pipe, at its branch, to generate a swirl-like aerodynamic movement along it. In FIG. 2, it can be seen that the hump 6 forms a springboard orienting the flow of air penetrating into the duct, towards the rear of the latter, with respect to the direction of the air flow in the distributor 1. Figure 2 also shows that the boss 6 is centered on the branching of the ducts. On the section of Figure 3, we see that it has, in section, a decreasing thickness on either side of the center of the duct, in a perpendicular plane B-B, to the axis of the distributor. As shown in the diagram, this section 6a may for example have a general shape of crescent in the cutting plane. It is desirable that the hump be centered on the branch of the duct, but its shape may be different, provided that satisfies the objective sought: divert the air towards the rear of the duct at its branch, to generate a - 4 - aerodynamic movement of swirl type, along this one. According to the nonlimiting embodiment described above, the motor concerned is a four-cylinder engine in line, and branches with a springboard hump are the last two in the direction of the air flow. . However, these provisions are in no way obligatory. The invention is also applicable to any type of engine with a different number of cylinders. Similarly, the bumps can be implanted only on the last cylinder, or generally, on a number of cylinders different from two. Moreover, it is not imperative that all the bumps are identical. Without departing from the scope of the invention, they can have a different profile according to the branches, within the same distributor. Under these conditions, is concerned with the invention, any type of engine having at least one of its intake ducts, a boss narrowing the section of the duct at its branch on the intake manifold, on the side of the arrival of air.25

Claims (8)

REVENDICATIONS 1. Dispositif d'admission d'air d'alimentation pour moteur à combustion interne comportant un répartiteur coudé (1) d'où sont issus à partir d'une série d'embranchements (4a, 4b, 4c, 4d) sensiblement alignés des conduits d'admission (2a, 2b, 2c, 2d) rejoignant chaque cylindre du moteur, caractérisé en ce que certains conduits présentent au niveau de leur embranchement une bosse (6) rétrécissant leur section du côté de l'arrivée d' air.  A feed air intake device for an internal combustion engine having an angled distributor (1) from which are derived from a series of substantially aligned branches (4a, 4b, 4c, 4d) of intake ducts (2a, 2b, 2c, 2d) joining each cylinder of the engine, characterized in that some ducts have at their branch a boss (6) narrowing their section on the side of the air inlet. 2. Dispositif d'admission d'air selon la revendication 1, caractérisé en ce que les conduits concernés (2c, 2d) sont les plus éloignés de l'entrée d'air dans le dispositif.  2. An air intake device according to claim 1, characterized in that the relevant ducts (2c, 2d) are furthest from the air inlet in the device. 3. Dispositif d'admission d'air selon la revendication 2, caractérisé en ce que les conduits concernés (2c, 2d) sont les deux derniers dans le sens de l'écoulement d'air dans le répartiteur (1).  3. An air intake device according to claim 2, characterized in that the relevant ducts (2c, 2d) are the last two in the direction of the air flow in the distributor (1). 4. Dispositif d'admission d'air selon la revendication 1, 2 ou 3, caractérisé en ce que la bosse (6) forme un tremplin orientant le flux d'air pénétrant dans le conduit vers l'arrière de celui-ci, par rapport au sens de l'écoulement d'air dans le répartiteur.  4. Air intake device according to claim 1, 2 or 3, characterized in that the boss (6) forms a springboard directing the flow of air entering the duct towards the rear thereof, by ratio to the direction of the air flow in the tundish. 5. Dispositif d'admission d'air selon l'une des revendications précédentes, caractérisé en ce que la bosse (6) est centrée sur l'embranchement du conduit.  5. Air intake device according to one of the preceding claims, characterized in that the boss (6) is centered on the branch of the conduit. 6. Dispositif d'admission selon la revendication 5, caractérisée en ce que la bosse (6) présente en section une épaisseur décroissante de part et d'autre du centre du conduit, dans un plan perpendiculaire à l'axe du répartiteur.  6. An intake device according to claim 5, characterized in that the boss (6) has in section a decreasing thickness on either side of the center of the duct, in a plane perpendicular to the axis of the distributor. 7. Dispositif d'admission selon la revendication 6, caractérisé en ce que la section (6a) de la bosse (6) présente une forme générale de croissant dans ce plan de section.  7. An intake device according to claim 6, characterized in that the section (6a) of the boss (6) has a general shape of crescent in the section plane. 8. Moteur à combustion interne caractérisé en ce qu'il comporte un dispositif d'admission conforme à l'une des revendications précédentes.  8. Internal combustion engine characterized in that it comprises an intake device according to one of the preceding claims.
FR0754378A 2007-04-06 2007-04-06 INTAKE AIR SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE Expired - Fee Related FR2914695B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR0754378A FR2914695B1 (en) 2007-04-06 2007-04-06 INTAKE AIR SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE
EP08788042A EP2132424A2 (en) 2007-04-06 2008-03-25 Inlet air intake device for internal combustion engine
PCT/FR2008/050516 WO2008132406A2 (en) 2007-04-06 2008-03-25 Inlet air intake device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0754378A FR2914695B1 (en) 2007-04-06 2007-04-06 INTAKE AIR SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
FR2914695A1 true FR2914695A1 (en) 2008-10-10
FR2914695B1 FR2914695B1 (en) 2009-05-15

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EP (1) EP2132424A2 (en)
FR (1) FR2914695B1 (en)
WO (1) WO2008132406A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2683924A1 (en) * 2011-03-10 2014-01-15 Valeo Systèmes Thermiques Cover for an intake housing
EP2711532A1 (en) * 2012-09-20 2014-03-26 MWM GmbH Internal combustion engine with flame arrestor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5985315B2 (en) * 2012-03-26 2016-09-06 株式会社Roki Ventilation duct

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11350963A (en) * 1998-06-09 1999-12-21 Yanmar Diesel Engine Co Ltd Intake manifold of internal combustion engine
JP2003074357A (en) * 2001-08-31 2003-03-12 Honda Motor Co Ltd Intake manifold
EP1455081A1 (en) * 2003-03-07 2004-09-08 Renault s.a.s. Air intake manifold for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11350963A (en) * 1998-06-09 1999-12-21 Yanmar Diesel Engine Co Ltd Intake manifold of internal combustion engine
JP2003074357A (en) * 2001-08-31 2003-03-12 Honda Motor Co Ltd Intake manifold
EP1455081A1 (en) * 2003-03-07 2004-09-08 Renault s.a.s. Air intake manifold for internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2683924A1 (en) * 2011-03-10 2014-01-15 Valeo Systèmes Thermiques Cover for an intake housing
EP2711532A1 (en) * 2012-09-20 2014-03-26 MWM GmbH Internal combustion engine with flame arrestor
WO2014044371A2 (en) 2012-09-20 2014-03-27 Mwm Gmbh Internal combustion engine with flame arrestor
WO2014044371A3 (en) * 2012-09-20 2014-05-22 Mwm Gmbh Internal combustion engine with flame arrestor

Also Published As

Publication number Publication date
FR2914695B1 (en) 2009-05-15
EP2132424A2 (en) 2009-12-16
WO2008132406A2 (en) 2008-11-06
WO2008132406A3 (en) 2009-02-12

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