WO2010040930A1 - Vaporisation device for generating aerodynamics in the intake pipe of a controlled ignition engine - Google Patents

Vaporisation device for generating aerodynamics in the intake pipe of a controlled ignition engine Download PDF

Info

Publication number
WO2010040930A1
WO2010040930A1 PCT/FR2009/051834 FR2009051834W WO2010040930A1 WO 2010040930 A1 WO2010040930 A1 WO 2010040930A1 FR 2009051834 W FR2009051834 W FR 2009051834W WO 2010040930 A1 WO2010040930 A1 WO 2010040930A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
duct
plate
aerodynamics
flap
Prior art date
Application number
PCT/FR2009/051834
Other languages
French (fr)
Inventor
Laurence Mamy
Original Assignee
Renault S.A.S.
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 S.A.S. filed Critical Renault S.A.S.
Publication of WO2010040930A1 publication Critical patent/WO2010040930A1/en

Links

Classifications

    • 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
    • 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
    • F02B31/06—Movable means, e.g. butterfly valves
    • 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
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
    • F02M31/125—Fuel
    • 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 the preparation of the fuel air mixture, in an intake pipe of an internal combustion engine.
  • This invention finds a preferred application, but not limited to a so-called "flexfuel” engine, operating at least partially with a fuel of plant origin, such as ethanol.
  • Ethanol has physico-chemical properties different from those of gasoline. In particular, it has a calorific value, a lower volatility and a lower rate of combustion. This is why an additional device, cold start, is necessary. It is therefore possible to vaporize the alcohol on arrival in the conduit, by placing therein hotplates, facing the injector.
  • variable tumble compared to the "fixed tumble” is to be able to control the aerodynamic level at the intake, according to the phases of operation of the engine, to optimize its services.
  • Such a system may, for example, be deactivated at full load at high speed, in order to benefit from maximum permeability in the duct.
  • the present invention aims to simultaneously facilitate the vaporization of a fuel injected into the intake duct of a spark ignition engine, and control of the structured aerodynamic level therein.
  • a device comprising at least one deflection element and / or separation heating the intake air flow, capable of generating in the flow of intake air passing through the conduit an aerodynamic movement structured, while heating the fuel injected into the duct.
  • the injected fuel jet is oriented directly on the deflection and / or separation element.
  • FIGS. 1A and 1B illustrate a first embodiment of the invention
  • - Figure 2 illustrates a second embodiment
  • Figure 3 illustrates a third embodiment thereof.
  • FIGS. 1A and IB there is shown in section an intake duct 1 in a cylinder head 2 spark ignition engine. Appear in the diagram, the valve 3 associated with the conduit 1 and its rod 3b, and the fuel injector 4 in the conduit 1.
  • the conduit further contains a separator plate 6 generating "tumble".
  • the plate 6 is connected to a heating system 7.
  • the plate 6 belongs to the vaporization device and aerodynamic generation in the intake duct, which is proposed.
  • the injected fuel jet 5 is oriented directly on the heating plate 6 of separation 6, which extends in the longitudinal direction of the conduit, in a plane orthogonal to the vertical plane of symmetry thereof.
  • the injected fuel impacts the plate 6, a "tumble" generator.
  • the proposed device simultaneously ensures the vaporization of the fuel, and the generation of aerodynamics in the conduit.
  • it further comprises an orientation flap 8, adjustable in position inside the duct 1, so as to vary the level of structured aerodynamics therein.
  • the device is therefore composed, on the one hand, of the heating fixed separation plate 6, a "tumble" generator extending in the longitudinal direction of the conduit, in a plane orthogonal to the vertical plane of symmetry of the the latter, on which is oriented the fuel jet 5, and on the other hand a flap 8, adjustable so as to vary the level of structured aerodynamics of the fuel air mixture.
  • the flap 8 pivots between a first closed position (FIG. 1A), where it is pressed against the wall 1a of the duct without having any effect on the aerodynamics of the duct, and an open position (FIG. 1B) in which it impacts the intake air flow so as to increase the level of structured aerodynamics thereof. In the open position (FIG. 1B), the flap 8 orients the flow of air on the side of the separating plate 6 facing the jet of fuel 5.
  • the fuel jet 5 is directed on the adjustable flap, connected to the heating system 7, so as to constitute itself the heating element.
  • the shutter 8 is responsible, by itself, for the "tumble" in the conduit. It is represented in the open position. However, as in the previous example, it makes it possible to vary the "tumble" level, pivoting between its maximum open position (orthogonal to the axis of the duct), where it impacts the flow of air. intake, and a second closing position (not shown), where it is pressed against the wall. In this second position, it has no effect on the aerodynamics of the duct, but it nevertheless ensures the vaporization of the fuel sprayed on it, when it is heated.
  • FIG. 3 illustrates a third embodiment, in which the two intake ducts 1 of a cylinder 9 each have a stationary partition plate 6 extending in the direction longitudinal duct.
  • the plates 6 are oriented along the vertical plane of symmetry of the ducts.
  • the separator plates, connected to their heating systems 7, are the heating elements of the device, and generate a "tumble" movement in the conduit.
  • variable aerodynamic system is used, or not (plate, and / or "tumble" flap) in association with a heating system.
  • This combination allows to optimize the two functions of variable aerodynamics, and vaporization of the fuel.
  • the thickness of the plate must be sufficient to withstand the temperatures reached for the vaporisation of the fuel, with the following reservations: it must not degrade the performance of the engine (duct permeability), and its thermal inertia must remain as low as possible.
  • the plate or the shutter is heated during cold starts.
  • the fuel is then projected on a hot plate or shutter, which promotes its vaporization.
  • the flap directs the air flow mixed with the vaporized fuel into the duct, so as to generate the desired "tumble" level.
  • the permeability of the duct is promoted.
  • This combination allows a gain "tumble” and “permeability” in the conduit, depending on the circumstances, while ensuring the vaporization of fuel essential to the proper operation of the engine "flexfuel".
  • the association of the means of guiding the air flow and the vaporization of the fuel is particularly beneficial in the case of ethanol.
  • it makes it possible to dispense with a device for preheating ethanol upstream of the while simultaneously optimizing the mixing of the fuel in the air flow, and the aerodynamic level thereof.

Abstract

The invention relates to a vaporisation device for generating aerodynamics in an intake pipe (1) of a controlled ignition engine, characterised in that the device includes a heating bypass and/or separation element (6, 8) for the intake air flow capable of generating a structured aerodynamic movement in the intake air flow flowing through the pipe while heating the fuel injected into the pipe.

Description

DISPOSITIF DE VAPORISATION ET DE GENERATION D' AERODYNAMISME DANS UN CONDUIT D' ADMISSION DE MOTEUR A ALLUMAGE COMMANDEDEVICE FOR VAPORIZING AND GENERATING AERODYNAMISM IN A DIRECT IGNITION ENGINE INTAKE DUCT
La présente invention se rapporte à la préparation du mélange air carburant, dans un conduit d'admission de moteur à combustion interne.The present invention relates to the preparation of the fuel air mixture, in an intake pipe of an internal combustion engine.
Plus précisément, elle a pour objet un dispositif de vaporisation et de génération d' aérodynamisme, dans un conduit d'admission de moteur à allumage commandé. Cette invention trouve une application privilégiée, mais non limitative, sur un moteur dit « flexfuel », fonctionnant au moins partiellement avec un carburant d'origine végétale, tel que l'éthanol.More specifically, it relates to a device for vaporization and aerodynamic generation, in a spark ignition engine intake duct. This invention finds a preferred application, but not limited to a so-called "flexfuel" engine, operating at least partially with a fuel of plant origin, such as ethanol.
L'éthanol a des propriétés physico-chimiques différentes de celles de l'essence. Notamment, il a un pouvoir calorifique, une volatilité et une vitesse de combustion plus faibles. C'est pour cela qu'un dispositif additionnel, de démarrage à froid, est nécessaire. On peut donc prévoir de vaporiser l'alcool à son arrivée dans le conduit, en disposant dans celui-ci des plaques chauffantes, en regard de l'injecteur.Ethanol has physico-chemical properties different from those of gasoline. In particular, it has a calorific value, a lower volatility and a lower rate of combustion. This is why an additional device, cold start, is necessary. It is therefore possible to vaporize the alcohol on arrival in the conduit, by placing therein hotplates, facing the injector.
Il est ainsi connu de placer dans le conduit d'admission une plaque chauffante ayant des propriétés électriques isolantes, telle qu'une plaquette métallique émaillée, ou une plaquette céramique, sur laquelle le carburant est projeté, dans le but de le vaporiser.It is thus known to place in the intake duct a heating plate having insulating electrical properties, such as an enamelled metal plate, or a ceramic plate, on which the fuel is projected, for the purpose of vaporizing it.
Dans les moteurs à allumage commandé, fonctionnant à l'essence, comme à l'éthanol, on cherche par ailleurs à générer un aérodynamisme structuré de type « tumble » (mouvement de rotation d'axe perpendiculaire au plan intersoupapes d'admission), de façon à dégrader, le plus tardivement possible, la structure du flux d'admission en turbulence. L'exploitation de cette turbulence au moment de l'allumage, permet de bénéficier d'une vitesse de combustion plus importante en charge partielle. Le potentiel de dilution avec des gaz brûlés résiduels dans la chambre est ainsi augmenté, ce qui se traduit directement par un gain en consommation. On connaît des systèmes pour la génération de « tumble variable », notamment des systèmes mécaniques obturation partielle du conduit (boisseau déflecteur ou plaques de séparation horizontales dans le conduit, insérées ou non à la coulée) . L'avantage du « tumble variable », par rapport au « tumble fixe », est de pouvoir contrôler le niveau d'aérodynamisme à l'admission, en fonction des phases de fonctionnement du moteur, pour optimiser ses prestations. Un tel système peut par exemple être désactivé en pleine charge à haut régime, pour bénéficier d'une perméabilité maximale dans le conduit .In spark ignition engines, running on gasoline, such as ethanol, we also seek to generate a structured aerodynamics of the "tumble" type (rotation movement axis perpendicular to the plane intersulating intake), to degrade, as late as possible, the structure of the intake flow in turbulence. The exploitation of this turbulence at the moment of ignition, makes it possible to benefit from a speed of greater combustion at partial load. The dilution potential with residual flue gases in the chamber is thus increased, which translates directly into a gain in consumption. There are known systems for the generation of "variable tumble", including mechanical systems partial closure of the duct (deflector plug or horizontal separation plates in the duct, inserted or not to the casting). The advantage of the "variable tumble", compared to the "fixed tumble", is to be able to control the aerodynamic level at the intake, according to the phases of operation of the engine, to optimize its services. Such a system may, for example, be deactivated at full load at high speed, in order to benefit from maximum permeability in the duct.
La présente invention a pour but de faciliter simultanément la vaporisation d'un carburant injecté dans le conduit d'admission d'un moteur à allumage commandé, et le contrôle du niveau aérodynamisme structuré dans celui- ci.The present invention aims to simultaneously facilitate the vaporization of a fuel injected into the intake duct of a spark ignition engine, and control of the structured aerodynamic level therein.
Dans ce but, elle propose un dispositif comprenant au moins un élément de déviation et/ou de séparation chauffant du flux d'air d'admission, apte à générer dans le flux d'air d'admission traversant le conduit un mouvement d'aérodynamisme structuré, tout en chauffant le carburant injecté dans le conduit.For this purpose, it proposes a device comprising at least one deflection element and / or separation heating the intake air flow, capable of generating in the flow of intake air passing through the conduit an aerodynamic movement structured, while heating the fuel injected into the duct.
De préférence, le jet de carburant injecté est orienté directement sur l'élément de déviation et/ou de séparation.Preferably, the injected fuel jet is oriented directly on the deflection and / or separation element.
D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description suivante d'un mode de réalisation non limitatif de celle-ci, en se reportant aux dessins annexés, sur lesquels :Other features and advantages of the invention will become apparent from the following description of a non-limiting embodiment thereof, with reference to the accompanying drawings, in which:
- les figures IA et IB illustrent un premier mode de réalisation de l'invention, - la figure 2 illustre un second mode de réalisation, et la figure 3 illustre un troisième mode de réalisation de celle-ci. Sur les figures IA et IB, on a représenté en coupe un conduit d'admission 1 dans une culasse 2 de moteur à allumage commandé. Apparaissent sur le schéma, la soupape 3 associée au conduit 1 et sa tige 3b, ainsi que l'injecteur de carburant 4 dans le conduit 1. Le conduit renferme en outre une plaque 6 de séparation génératrice de « tumble ». La plaque 6 est reliée à un système de chauffage 7. La plaque 6 appartient au dispositif de vaporisation et de génération d' aérodynamisme dans le conduit d'admission, qui est proposé. Elle constitue un élément de déviation et/ou de séparation chauffant du flux d'air d'admission, apte à générer dans le flux d'air d'admission traversant le conduit, un mouvement d' aérodynamisme structuré, tout en chauffant le carburant injecté dans le conduit. Comme indiqué sur ces schémas, le jet de carburant injecté 5 est orienté directement sur la plaque chauffante 6 de séparation 6, qui s'étend dans la direction longitudinale du conduit, selon un plan orthogonal au plan de symétrie vertical de celui-ci. Le carburant injecté vient impacter la plaque 6, génératrice de « tumble ». Le dispositif proposé assure simultanément la vaporisation du carburant, et la génération d' aérodynamisme dans le conduit. Sur les figures IA et IB, il comprend en plus un volet d'orientation 8, réglable en position à l'intérieur du conduit 1, de manière à faire varier le niveau d' aérodynamisme structuré dans celui-ci. Le dispositif est donc composé, d'une part de la plaque de séparation fixe chauffante 6, génératrice de « tumble » s 'étendant dans la direction longitudinale du conduit, selon un plan orthogonal au plan de symétrie vertical de celui-ci, sur laquelle est orienté le jet de carburant 5, et d'autre part d'un volet 8, réglable de manière à faire varier le niveau d' aérodynamisme structuré du mélange air carburant . Le volet 8 pivote entre une première position de fermeture (figure IA) , où il est plaqué contre la paroi la du conduit sans avoir d'effet sur 1 'aérodynamisme du conduit, et une position d'ouverture (figure IB) où il impacte le flux d'air d'admission de manière à accroître le niveau d' aérodynamisme structuré de celui-ci. En position d'ouverture (figure IB), le volet 8 oriente le flux d'air du côté de la plaque de séparation 6 faisant face au jet de carburant 5.FIGS. 1A and 1B illustrate a first embodiment of the invention, - Figure 2 illustrates a second embodiment, and Figure 3 illustrates a third embodiment thereof. In Figures IA and IB, there is shown in section an intake duct 1 in a cylinder head 2 spark ignition engine. Appear in the diagram, the valve 3 associated with the conduit 1 and its rod 3b, and the fuel injector 4 in the conduit 1. The conduit further contains a separator plate 6 generating "tumble". The plate 6 is connected to a heating system 7. The plate 6 belongs to the vaporization device and aerodynamic generation in the intake duct, which is proposed. It constitutes a deflecting element and / or heating element of the intake air flow, able to generate in the flow of intake air passing through the conduit, a structured aerodynamic movement, while heating the injected fuel in the conduit. As shown in these diagrams, the injected fuel jet 5 is oriented directly on the heating plate 6 of separation 6, which extends in the longitudinal direction of the conduit, in a plane orthogonal to the vertical plane of symmetry thereof. The injected fuel impacts the plate 6, a "tumble" generator. The proposed device simultaneously ensures the vaporization of the fuel, and the generation of aerodynamics in the conduit. In FIGS. 1A and 1B, it further comprises an orientation flap 8, adjustable in position inside the duct 1, so as to vary the level of structured aerodynamics therein. The device is therefore composed, on the one hand, of the heating fixed separation plate 6, a "tumble" generator extending in the longitudinal direction of the conduit, in a plane orthogonal to the vertical plane of symmetry of the the latter, on which is oriented the fuel jet 5, and on the other hand a flap 8, adjustable so as to vary the level of structured aerodynamics of the fuel air mixture. The flap 8 pivots between a first closed position (FIG. 1A), where it is pressed against the wall 1a of the duct without having any effect on the aerodynamics of the duct, and an open position (FIG. 1B) in which it impacts the intake air flow so as to increase the level of structured aerodynamics thereof. In the open position (FIG. 1B), the flap 8 orients the flow of air on the side of the separating plate 6 facing the jet of fuel 5.
Sur la figure 2, le jet de carburant 5 est dirigé sur le volet réglable, relié au système de chauffage 7, de manière à constituer lui-même l'élément chauffant. Dans ce mode de réalisation, il n'y a donc pas de plaque de séparation longitudinale, mais seulement un élément de déviation chauffant 8. Le volet 8 est responsable, à lui- seul, du « tumble » dans le conduit. Il est représenté en position d'ouverture. Toutefois, comme dans l'exemple précédent, il permet de faire varier le niveau de « tumble », en pivotant entre sa position d'ouverture maximale (orthogonale à l'axe du conduit), où il impacte le flux d'air d'admission, et une deuxième position de fermeture (non représentée) , où il est plaqué contre la paroi la. Dans cette deuxième position, il n'a pas d'effet sur 1 'aérodynamisme du conduit, mais il assure cependant la vaporisation du carburant projeté sur lui, lorsqu'il est chauffé.In Figure 2, the fuel jet 5 is directed on the adjustable flap, connected to the heating system 7, so as to constitute itself the heating element. In this embodiment, therefore, there is no longitudinal separating plate, but only one heating deflection element 8. The shutter 8 is responsible, by itself, for the "tumble" in the conduit. It is represented in the open position. However, as in the previous example, it makes it possible to vary the "tumble" level, pivoting between its maximum open position (orthogonal to the axis of the duct), where it impacts the flow of air. intake, and a second closing position (not shown), where it is pressed against the wall. In this second position, it has no effect on the aerodynamics of the duct, but it nevertheless ensures the vaporization of the fuel sprayed on it, when it is heated.
Enfin, le schéma de la figure 3, illustre un troisième mode de réalisation, dans lequel les deux conduits d'admission 1 d'un cylindre 9 possèdent chacun une plaque de séparation fixe 6 s 'étendant dans la direction longitudinale du conduit. Toutefois, à la différence du premier mode de réalisation décrit, les plaques 6 sont orientées selon le plan de symétrie vertical des conduits. Comme sur les figures IA et IB, les plaques de séparation, reliées à leurs systèmes de chauffage 7, sont les éléments chauffants du dispositif, et génèrent un mouvement de « tumble » dans le conduit .Finally, the diagram of FIG. 3 illustrates a third embodiment, in which the two intake ducts 1 of a cylinder 9 each have a stationary partition plate 6 extending in the direction longitudinal duct. However, unlike the first embodiment described, the plates 6 are oriented along the vertical plane of symmetry of the ducts. As in FIGS. 1A and 1B, the separator plates, connected to their heating systems 7, are the heating elements of the device, and generate a "tumble" movement in the conduit.
Dans les trois modes de réalisation non limitatifs décrits ci-dessus, on utilise un système d' aérodynamisme variable, ou non (plaque, et/ou volet de « tumble ») en association avec un système chauffant. Cette association permet d'optimiser les deux fonctions d' aérodynamisme variable, et vaporisation du carburant. L'épaisseur de la plaque, doit être suffisante pour résister aux températures atteintes pour la vaporisation du carburant, avec les réserves suivantes : elle ne doit pas dégrader les performances du moteur (perméabilité du conduit), et son inertie thermique doit rester aussi faible que possible.In the three nonlimiting embodiments described above, a variable aerodynamic system is used, or not (plate, and / or "tumble" flap) in association with a heating system. This combination allows to optimize the two functions of variable aerodynamics, and vaporization of the fuel. The thickness of the plate must be sufficient to withstand the temperatures reached for the vaporisation of the fuel, with the following reservations: it must not degrade the performance of the engine (duct permeability), and its thermal inertia must remain as low as possible.
De préférence, on chauffe, la plaque ou le volet, lors des démarrages à froid. Le carburant est alors projeté sur une plaque ou un volet chaud, qui favorise sa vaporisation. Simultanément, si les conditions de fonctionnement du moteur le justifient, le volet oriente le flux d'air mélangé au carburant vaporisé dans le conduit, de manière à générer le niveau de « tumble » souhaité. A l'inverse, avec le volet replié, on favorise la perméabilité du conduit.Preferably, the plate or the shutter is heated during cold starts. The fuel is then projected on a hot plate or shutter, which promotes its vaporization. Simultaneously, if the engine operating conditions warrant it, the flap directs the air flow mixed with the vaporized fuel into the duct, so as to generate the desired "tumble" level. Conversely, with the folded flap, the permeability of the duct is promoted.
Cette association permet un gain en « tumble » et en « perméabilité » dans le conduit, selon les circonstances, tout en assurant la vaporisation du carburant indispensable au bon fonctionnement du moteur « flexfuel ». L'association des moyens de guidage du flux d'air et de vaporisation du carburant, est particulièrement bénéfique dans le cas de l'éthanol. Elle permet en particulier de se passer d'un dispositif de préchauffage de l'éthanol en amont du conduit, tout en optimisant simultanément le mélange du carburant dans le flux d'air, et le niveau d' aérodynamisme de celui-ci. This combination allows a gain "tumble" and "permeability" in the conduit, depending on the circumstances, while ensuring the vaporization of fuel essential to the proper operation of the engine "flexfuel". The association of the means of guiding the air flow and the vaporization of the fuel is particularly beneficial in the case of ethanol. In particular, it makes it possible to dispense with a device for preheating ethanol upstream of the while simultaneously optimizing the mixing of the fuel in the air flow, and the aerodynamic level thereof.

Claims

REVENDICATIONS
1. Dispositif de vaporisation et de génération d' aérodynamisme dans un conduit d'admission (1) de moteur à allumage commandé, caractérisé en ce qu'il comprend au moins une plaque longitudinale de séparation chauffante (6, 8) du flux d'air d'admission, apte à générer dans le flux d'air d'admission traversant le conduit (1) un mouvement d'aérodynamisme structuré, tout en chauffant le carburant injecté dans le conduit.Aerodynamic generating device in an intake pipe (1) for a spark ignition engine, characterized in that it comprises at least one longitudinal heating separation plate (6, 8) of the flow of intake air, able to generate in the flow of intake air passing through the duct (1) a structured aerodynamic movement, while heating the fuel injected into the duct.
2. Dispositif de vaporisation selon la revendication 1, caractérisé en ce que le jet de carburant injecté (5) est orienté sur l'élément de déviation et/ou de séparation (6, 8) . Spray device according to claim 1, characterized in that the injected fuel jet (5) is oriented on the deflection and / or separation element (6, 8).
3. Dispositif de vaporisation selon la revendication 1 ou 2, caractérisé en ce que la plaque de séparation (6) est une plaque fixe s 'étendant dans la direction longitudinale du conduit (1), selon le plan de symétrie vertical de celui-ci . Spray device according to claim 1 or 2, characterized in that the separating plate (6) is a fixed plate extending in the longitudinal direction of the duct (1), according to the vertical plane of symmetry thereof. .
4. Dispositif de vaporisation selon la revendication 3, caractérisé en ce que la plaque chauffante est constitué par la plaque de séparation verticale (6) .4. Spray device according to claim 3, characterized in that the heating plate is constituted by the vertical partition plate (6).
5. Dispositif de vaporisation selon la revendication 1 ou 2, caractérisé en ce que la plaque de séparation est une plaque fixe (6) s 'étendant dans la direction longitudinale du conduit (1), selon un plan orthogonal au plan de symétrie vertical du conduit.5. Spraying device according to claim 1 or 2, characterized in that the separating plate is a fixed plate (6) extending in the longitudinal direction of the conduit (1), in a plane orthogonal to the vertical plane of symmetry of the leads.
6. Dispositif de vaporisation de carburant selon la revendication 1, 2 ou 5, caractérisé en ce qu'il comprend un volet d'orientation (8) réglable en position à l'intérieur du conduit (1), de manière à faire varier le niveau d'aérodynamisme structuré dans celui-ci.6. fuel vaporization device according to claim 1, 2 or 5, characterized in that it comprises an orientation flap (8) adjustable in position inside the duct (1), so as to vary the level of structured aerodynamics in it.
7. Dispositif de vaporisation selon la revendication 6 caractérisé en ce qu'il est composé d'une plaque de séparation fixe chauffante (6) s 'étendant dans la direction longitudinale du conduit, selon un plan orthogonal au plan de symétrie vertical de celui-ci, sur laquelle est orienté le jet de carburant (5), et d'un volet (8) réglable de manière à faire varier le niveau d'aérodynamisme structuré du mélange air carburant.7. Spray device according to claim 6 characterized in that it is composed of a plate of fixed heating partition (6) extending in the longitudinal direction of the duct, in a plane orthogonal to the vertical plane of symmetry thereof, on which is directed the fuel jet (5), and a flap (8) adjustable to vary the level of structured aerodynamics of the fuel air mixture.
8. Dispositif de vaporisation de carburant selon la revendication 6 ou 7, caractérisé en ce que le volet (8) pivote entre une première position de fermeture, où il est plaqué contre une paroi (la) du conduit sans avoir d'effet sur 1 'aérodynamisme du flux d'air d'admission, et une position d'ouverture où il impacte le flux d'air d'admission de manière à accroître le niveau d'aérodynamisme structuré de celui-ci. 8. A fuel spraying device according to claim 6 or 7, characterized in that the flap (8) pivots between a first closed position, where it is pressed against a wall (la) of the duct without having any effect on 1 aerodynamics of the intake air flow, and an open position where it impacts the intake air flow so as to increase the level of structured aerodynamics thereof.
9. Dispositif de vaporisation selon la revendication 8, caractérisé en ce que le volet (8) oriente le flux d'air du côté de la plaque de séparation (6) faisant face au jet de carburant (5) .9. Spray device according to claim 8, characterized in that the flap (8) orients the flow of air on the side of the separating plate (6) facing the jet of fuel (5).
10. Dispositif de vaporisation selon la revendication 6, caractérisé en ce que le jet de carburant est dirigé sur le volet réglable. 10. Spray device according to claim 6, characterized in that the fuel jet is directed on the adjustable flap.
PCT/FR2009/051834 2008-10-09 2009-09-28 Vaporisation device for generating aerodynamics in the intake pipe of a controlled ignition engine WO2010040930A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0856844A FR2937085A1 (en) 2008-10-09 2008-10-09 DEVICE FOR VAPORIZING AND GENERATING AERODYNAMISM IN A CONTROL-IGNITION ENGINE INTAKE DUCT
FR0856844 2008-10-09

Publications (1)

Publication Number Publication Date
WO2010040930A1 true WO2010040930A1 (en) 2010-04-15

Family

ID=40622098

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2009/051834 WO2010040930A1 (en) 2008-10-09 2009-09-28 Vaporisation device for generating aerodynamics in the intake pipe of a controlled ignition engine

Country Status (2)

Country Link
FR (1) FR2937085A1 (en)
WO (1) WO2010040930A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011148202A1 (en) * 2010-05-28 2011-12-01 Vasileios Kaounis Molecular fuel divider

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1474384A (en) * 1974-09-02 1977-05-25 Lucas Electrical Ltd Inlet manifolds for internal combustion engines
US4257384A (en) * 1977-10-27 1981-03-24 Yamaha Hatsukoki Kabushiki Kaisha Intake control apparatus of engine
JPS60219415A (en) * 1984-04-16 1985-11-02 Mazda Motor Corp Intake device for engine
DE102006026128A1 (en) * 2006-06-03 2007-12-06 Daimlerchrysler Ag Heating flange for preheating intake air in intake line of internal-combustion engine, has heating strips for heating intake air, where one of strips is arranged and/or formed in such manner that strip produces intake air turbulence
FR2902152A1 (en) * 2006-06-07 2007-12-14 Renault Sas Fuel pulverizing system for internal combustion engine, has sensor detecting measured temperature of engine to send control signals to position perturbation element in active position, so that element is heated by flow of hot exhaust gas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1474384A (en) * 1974-09-02 1977-05-25 Lucas Electrical Ltd Inlet manifolds for internal combustion engines
US4257384A (en) * 1977-10-27 1981-03-24 Yamaha Hatsukoki Kabushiki Kaisha Intake control apparatus of engine
JPS60219415A (en) * 1984-04-16 1985-11-02 Mazda Motor Corp Intake device for engine
DE102006026128A1 (en) * 2006-06-03 2007-12-06 Daimlerchrysler Ag Heating flange for preheating intake air in intake line of internal-combustion engine, has heating strips for heating intake air, where one of strips is arranged and/or formed in such manner that strip produces intake air turbulence
FR2902152A1 (en) * 2006-06-07 2007-12-14 Renault Sas Fuel pulverizing system for internal combustion engine, has sensor detecting measured temperature of engine to send control signals to position perturbation element in active position, so that element is heated by flow of hot exhaust gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011148202A1 (en) * 2010-05-28 2011-12-01 Vasileios Kaounis Molecular fuel divider

Also Published As

Publication number Publication date
FR2937085A1 (en) 2010-04-16

Similar Documents

Publication Publication Date Title
FR2534626A1 (en) INTERNAL COMBUSTION ENGINE ALL USES EQUIPPED WITH VERTICAL CRANKSHAFT
FR2471476A1 (en) TURBULENCE GENERATING DEVICE IN INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATING THE SAME
FR2910532A1 (en) Heat engine depollution arrangement for motor vehicle, has flap inclined towards downstream in operating position to improve vaporization of reducing agent by respectively creating depression near active surface and turbulences in mixture
FR2473631A1 (en) FOUR-STROKE INTERNAL COMBUSTION ENGINE
EP1464804A1 (en) Internal combustion engine having pre-chamber and spark ignition
FR2902462A1 (en) Diesel type direct injection internal combustion engine for vehicle, has fuel injector injecting fuel in direction of cavities, where one of cavity directs injected fuel in direction of heater plug integrated to cylinder head
WO2010040930A1 (en) Vaporisation device for generating aerodynamics in the intake pipe of a controlled ignition engine
FR2769046A1 (en) METHOD FOR IMPLEMENTING AN INTERNAL COMBUSTION ENGINE AND FUEL INJECTION SYSTEM FOR IMPLEMENTING THE PROCESS
FR2511433A1 (en) ADMISSION PASSAGE STRUCTURE FOR INTERNAL COMBUSTION ENGINES
FR2841595A1 (en) Double skinned exhaust gas tube for use in a car exhaust has valve to allow cooling gas to flow through the annular chamber between the walls
FR2893673A1 (en) Internal combustion engine e.g. spark ignition engine, has duct with channel emerging into pre-combustion chamber to supply fresh air, where chamber is delimited by wall having bend to generate whirling movement of fresh gas mixture
WO2004090320A2 (en) Internal combustion engine with direct petrol injection and controlled ignition
EP1683957B1 (en) Internal combustion engine with indirect injection
WO2011012787A1 (en) Method for monitoring the flow of intake fluid for an internal combustion engine, and engine for implementing said method
FR2907172A3 (en) Internal combustion engine, has intake valve head and valve seat between which fuel spray passes to directly penetrate into combustion chamber without reaching intake duct, intake valve and valve seat
FR2888284A3 (en) Internal combustion engine for motor vehicle, has injector with nozzle, whose free end comprises secondary orifice for supplying fuel to primary orifices, where axis of secondary orifice is oriented towards end of preheater plug
FR2928703A1 (en) Internal combustion engine i.e. indirect-injection spark-ignition engine, for motor vehicle, has air supply conduit opened in body, and vaporization and fractionation unit vaporizing and fractionating fuel and arranged at interior of body
FR2663689A1 (en) VAPORIZATION ELEMENT PLACED IN THE INTAKE DUCT OF THE CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE.
FR2877044A1 (en) Inlet device for internal combustion engine, has blade made of two materials and connected to electrical source, where one of materials is conductor and deforms under effect of electric current passing through material
CH629570A5 (en) Two-stroke engine and method for activating this engine
FR2713282A1 (en) Compression ignition i.c. engine with direct fuel injection
FR2499159A1 (en) INTAKE DEVICE FOR AIR FUEL MIXTURE FOR INTERNAL COMBUSTION ENGINE
FR2519379A1 (en) Fuel feed for IC engine - has nozzle which injects fuel tangentially to vaporiser surface furthest from exhaust heated portion
FR3034137A1 (en) INTERNAL COMBUSTION ENGINE WITH DIRECT FUEL INJECTION OF LOW THERMAL TRANSFER, IN PARTICULAR FOR MOTOR VEHICLE.
FR2919668A1 (en) Camless heat engine for motor vehicle, has control unit controlling air injection during opening of valve, and additional opening of valve and air injection during intake phase for permitting functioning of engine alone self-ignition mode

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09752421

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09752421

Country of ref document: EP

Kind code of ref document: A1