FR2867522A1 - Internal combustion engine e.g. diesel engine, for vehicle, has deflector mounted around axis, where deflector rotation around axis permits to move re-circulated gas from one re-circulated exhaust gas zone to another during engine operation - Google Patents
Internal combustion engine e.g. diesel engine, for vehicle, has deflector mounted around axis, where deflector rotation around axis permits to move re-circulated gas from one re-circulated exhaust gas zone to another during engine operation Download PDFInfo
- Publication number
- FR2867522A1 FR2867522A1 FR0402584A FR0402584A FR2867522A1 FR 2867522 A1 FR2867522 A1 FR 2867522A1 FR 0402584 A FR0402584 A FR 0402584A FR 0402584 A FR0402584 A FR 0402584A FR 2867522 A1 FR2867522 A1 FR 2867522A1
- Authority
- FR
- France
- Prior art keywords
- deflector
- engine
- around axis
- exhaust gas
- circulated
- 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
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
- F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
- F02B47/04—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only
- F02B47/08—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only the substances including exhaust gas
-
- 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
- F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
-
- 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
- F02B31/08—Movable means, e.g. butterfly valves having multiple air inlets, i.e. having main and auxiliary intake passages
- F02B31/085—Movable means, e.g. butterfly valves having multiple air inlets, i.e. having main and auxiliary intake passages having two inlet 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
-
- 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
- F02M35/108—Intake manifolds with primary and secondary intake passages
- F02M35/1085—Intake manifolds with primary and secondary intake passages the combustion chamber having multiple intake valves
-
- 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
Abstract
Description
L'invention concerne les moteurs à combustion interne de véhicule.The invention relates to internal combustion engines of a vehicle.
II est connu de faire recirculer des gaz d'échappement du moteur dans le circuit d'admission afin de satisfaire les normes de plus en plus sévères en matière de pollution sur les moteurs à combustion interne. Le document EP-0 719 916 présente ainsi un moteur dans lequel une telle recirculation est mise en oeuvre. It is known to recirculate exhaust gas from the engine in the intake circuit in order to meet the increasingly stringent standards for pollution on internal combustion engines. The document EP-0 719 916 thus has an engine in which such recirculation is implemented.
Pour augmenter le plus possible le taux de gaz d'échappement recirculés (EGR) admis dans le moteur, on cherche à réaliser dans chaque cylindre une stratification des gaz d'EGR et du mélange frais. To increase as much as possible the recirculated exhaust gas (EGR) rate admitted into the engine, it is sought to produce in each cylinder a stratification of the EGR gas and the fresh mixture.
Un but de l'invention est donc de favoriser cette stratification pour réduire encore la pollution générée par le moteur. An object of the invention is therefore to promote this stratification to further reduce the pollution generated by the engine.
A cet effet, on prévoit selon l'invention un moteur à combustion interne pour véhicule, comprenant: - au moins un conduit d'admission; et - un déflecteur monté rotatif dans le conduit, dans lequel le déflecteur est monté rotatif autour d'un axe parallèle à une direction longitudinale du conduit. For this purpose, the invention provides an internal combustion engine for a vehicle, comprising: - at least one intake duct; and - a deflector rotatably mounted in the conduit, wherein the deflector is rotatably mounted about an axis parallel to a longitudinal direction of the conduit.
Le moteur selon l'invention pourra présenter en outre au moins l'une quelconque des caractéristiques suivantes: - le déflecteur est un déflecteur de gaz d'échappement recirculés; - il comprend un conduit de gaz d'échappement débouchant dans le conduit d'admission; - le déflecteur s'étend en regard du conduit de gaz d'échappement; - le déflecteur s'étend en aval du conduit de gaz d'échappement; 25 - le déflecteur a une course d'au moins 160 ; - il s'agit d'un moteur à allumage commandé ; et - il s'agit d'un moteur diesel. The engine according to the invention may also have at least one of the following characteristics: the deflector is a recirculated exhaust gas deflector; it comprises an exhaust gas duct opening into the intake duct; the deflector extends opposite the exhaust gas duct; the deflector extends downstream of the exhaust gas duct; The deflector has a stroke of at least 160; - it is a spark ignition engine; and - it is a diesel engine.
On prévoit également selon l'invention un procédé de commande d'un moteur à combustion interne de véhicule, dans lequel, dans au moins 30 un conduit d'admission du moteur, on fait tourner un déflecteur autour d'un axe parallèle à une direction longitudinale du conduit. Also provided according to the invention is a method for controlling a vehicle internal combustion engine, in which, in at least one engine intake duct, a deflector is rotated about an axis parallel to a direction. longitudinal duct.
On prévoit enfin selon l'invention un procédé de fabrication d'un moteur à combustion interne de véhicule, dans lequel, dans au moins un conduit d'admission du moteur, on monte un déflecteur rotatif autour d'un axe parallèle à une direction longitudinale du conduit. Finally, according to the invention, a method of manufacturing a vehicle internal combustion engine is provided, in which, in at least one intake duct of the engine, a rotating deflector is mounted around an axis parallel to a longitudinal direction. duct.
D'autres caractéristiques et avantages de l'invention apparaîtront encore dans la description suivante d'un mode préféré de réalisation donné à titre d'exemple non limitatif en référence aux dessins annexés sur lesquels: - les figures 1 et 2 sont deux vues respectivement en élévation et du dessus d'une partie d'un moteur selon l'invention montrant un cylindre et les deux conduits d'admission associés; - la figure 3 est une vue d'extrémité de l'un des conduits d'admission comme observé depuis la flèche III de la figure 2; et - les figures 4 et 5 sont deux vues analogues à la figure 3 illustrant différentes positions du déflecteur. Other features and advantages of the invention will become apparent in the following description of a preferred embodiment given by way of non-limiting example with reference to the accompanying drawings, in which: FIGS. 1 and 2 are two views respectively of elevation and top of a portion of an engine according to the invention showing a cylinder and the two associated intake ducts; FIG. 3 is an end view of one of the intake ducts as seen from arrow III of FIG. 2; and - Figures 4 and 5 are two views similar to Figure 3 illustrating different positions of the baffle.
On va décrire un mode préféré de réalisation du moteur selon l'invention. L'invention, et ce mode de réalisation en particulier, s'applique à toutes les architectures de moteur à allumage commandé ou diesel, qu'il soit à 8 ou 16 soupapes et qu'il soit avec ou sans aérodynamique. We will describe a preferred embodiment of the engine according to the invention. The invention, and this embodiment in particular, applies to all engine architectures spark ignition or diesel, whether it is 8 or 16 valves and whether with or without aerodynamics.
Le moteur 2 comprend plusieurs cylindres dont un seul 4 a été illustré sur les figures 1 et 2. Le moteur 2 comprend des conduits d'admission 6 et 8, en l'espèce au nombre de deux, associés à chaque cylindre 4 et débouchant dans celui-ci par leur orifice aval 10. Ces conduits 6 et 8 servent à l'amenée dans le cylindre 4 d'air ou d'un mélange frais comprenant de l'air et du carburant. Ils sont obturés à l'orifice aval 10 par une soupape 12. The engine 2 comprises several cylinders of which only one 4 has been illustrated in FIGS. 1 and 2. The engine 2 comprises intake ducts 6 and 8, in this case two in number, associated with each cylinder 4 and opening into the engine. the latter through their downstream orifice 10. These ducts 6 and 8 serve to supply the cylinder 4 with air or a fresh mixture comprising air and fuel. They are closed at the downstream orifice 10 by a valve 12.
En amont de cet orifice 10 par référence au sens d'écoulement du gaz, le moteur comprend un conduit ou tubulure 14 servant à l'amenée de gaz d'EGR dans le conduit 8 et débouchant dans ce dernier. Upstream of this orifice 10 with reference to the flow direction of the gas, the engine comprises a pipe or pipe 14 serving for the supply of EGR gas into the pipe 8 and opening into the latter.
Le moteur 2 comprend une base de déflecteur 16 et un déflecteur 18. La base 16 comprend une partie montée mobile à rotation dans le conduit 8 autour d'un axe 20 parallèle localement à l'axe longitudinal de ce conduit et en l'espèce confondu avec cet axe. Le déflecteur 18 est fixé par son extrémité amont à la partie mobile de la base 16 dont la partie fixe est rigidement fixée au conduit 8. Il s'étend à partir de cette extrémité amont en direction de l'orifice 10. Il présente une extrémité aval 22 située en amont de l'orifice 10. La base 16 et le conduit 14 pourront être montés à l'interface de la culasse et du répartiteur dans un boîtier. Comme on le voit, le déflecteur 18 s'étend ici à la fois en regard et en aval du conduit 14 des gaz d'échappement. The engine 2 comprises a deflector base 16 and a deflector 18. The base 16 comprises a portion rotatably mounted in the conduit 8 about an axis 20 locally parallel to the longitudinal axis of the conduit and in this case with this axis. The deflector 18 is fixed by its upstream end to the movable part of the base 16 whose fixed part is rigidly fixed to the conduit 8. It extends from this upstream end towards the orifice 10. It has one end downstream 22 located upstream of the orifice 10. The base 16 and the conduit 14 may be mounted at the interface of the yoke and the distributor in a housing. As seen, the deflector 18 extends here both facing and downstream of the conduit 14 of the exhaust gas.
Le déflecteur 18 se trouve donc monté mobile à rotation dans le conduit 8 en pouvant occuper plusieurs positions par rapport à ce conduit autour de l'axe 20 comme illustré aux figures 3, 4 et 5. Les figures 3 et 5 illustrent deux positions extrêmes du déflecteur dans sa course de rotation autour de l'axe 20 qui peut couvrir ici jusqu'à 160 . La figure 4 correspond à la position intermédiaire dans laquelle le déflecteur qui a une forme plane s'étend dans un plan perpendiculaire à un axe 15 du conduit 14. Sur la figure 3, les gaz d'EGR sont déviés vers le haut par le déflecteur qui, au voisinage du conduit 14, s'étend sous celui-ci. Au contraire dans la configuration de la figure 5, les gaz d'EGR sont déviés vers le bas puisque le bord du déflecteur adjacent au conduit 14 s'étend au-dessus de ce dernier. Dans les deux configurations des figures 3 et 5, les gaz d'EGR sont donc déviés respectivement vers la zone EGR 1 se trouvant plutôt vers le centre du cylindre et vers la zone EGR 2 se trouvant plutôt vers le bord du cylindre contigu à l'orifice 10 du conduit 8, comme illustré sur la figure 2. Dans chacune des positions illustrées aux figures 3 et 5, le plan du déflecteur est incliné par rapport à l'axe longitudinal 15 du conduit 14. The deflector 18 is therefore rotatably mounted in the duct 8 and can occupy several positions relative to this duct around the axis 20 as illustrated in FIGS. 3, 4 and 5. FIGS. 3 and 5 illustrate two extreme positions of the deflector in its rotational stroke around the axis 20 which can cover here up to 160. FIG. 4 corresponds to the intermediate position in which the deflector which has a flat shape extends in a plane perpendicular to an axis 15 of the duct 14. In FIG. 3, the EGR gases are deflected upwards by the deflector which, in the vicinity of the conduit 14, extends beneath it. In contrast, in the configuration of FIG. 5, the EGR gases are deflected downwards since the edge of the deflector adjacent the duct 14 extends above the latter. In the two configurations of FIGS. 3 and 5, the EGR gases are thus diverted respectively towards the EGR zone 1 located rather towards the center of the cylinder and towards the EGR zone 2 located rather towards the edge of the cylinder contiguous to the orifice 10 of the duct 8, as illustrated in FIG. 2. In each of the positions illustrated in FIGS. 3 and 5, the plane of the deflector is inclined with respect to the longitudinal axis 15 of the duct 14.
La position de la figure 3 pourra être utilisée comme position initiale correspondant par exemple aux bas régimes du moteur tandis que la position de la figure 5 constituera la position maximale correspondant aux hauts régimes du moteur. La rotation du déflecteur autour de son axe au cours du fonctionnement du moteur permet donc de déplacer les gaz d'EGR de la zone EGR 1 à la zone EGR 2, et ce progressivement en fonction de la position choisie pour le déflecteur. The position of Figure 3 may be used as the initial position corresponding for example to the low speeds of the engine while the position of Figure 5 will be the maximum position corresponding to the high speeds of the engine. The rotation of the deflector around its axis during the operation of the engine therefore allows the EGR gases to be moved from the EGR zone 1 to the EGR zone 2, and progressively according to the position chosen for the deflector.
Une buse d'EGR pourra être prévue à la jonction entre le conduit 14 et le conduit d'admission 8. An EGR nozzle may be provided at the junction between the conduit 14 and the intake duct 8.
Des moyens d'actionnement tels qu'un actionneur non illustré pourront être prévus pour modifier la position du déflecteur pendant le fonctionnement du moteur. Ces moyens pourront être commandés automatiquement par un calculateur de bord du véhicule en fonction de paramètres et de critères prédéterminés. Actuating means such as an actuator not shown may be provided to change the position of the deflector during operation of the engine. These means can be controlled automatically by an onboard computer of the vehicle according to parameters and predetermined criteria.
L'invention peut être adaptée à une architecture existante de moteur sans imposer de redéfinir la culasse du moteur au plan technique. L'invention permet de stratifier les gaz d'échappement recirculés et le mélange frais dans le cylindre afin d'augmenter le taux d'EGR admis dans le moteur. Cela permet de limiter les émissions à l'échappement et de satisfaire les normes anti-pollution. The invention can be adapted to an existing engine architecture without the need to redefine the engine cylinder head technically. The invention makes it possible to stratify the recirculated exhaust gas and the fresh mixture in the cylinder in order to increase the rate of EGR admitted into the engine. This makes it possible to limit exhaust emissions and meet anti-pollution standards.
Bien entendu, on pourra apporter à l'invention de nombreuses 15 modifications sans sortir du cadre de celle-ci. Of course, many modifications can be made to the invention without departing from the scope thereof.
On pourra prévoir que le déflecteur est monté mobile autour d'un axe qui n'est pas confondu avec l'axe du conduit mais décalé latéralement par rapport à celui-ci tout en restant parallèle à celui-ci. On pourra prévoir un déflecteur mobile dans chaque conduit d'admission 6,8. It can be provided that the deflector is mounted to move about an axis which is not coincident with the axis of the conduit but shifted laterally relative thereto while remaining parallel thereto. A movable baffle may be provided in each intake duct 6.8.
On pourra prévoir que la course du déflecteur s'étend sur une plage supérieure ou inférieure à 160 , par exemple sur 90 . It can be provided that the deflector travel extends over a range greater than or less than 160, for example 90.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0402584A FR2867522B1 (en) | 2004-03-12 | 2004-03-12 | INTERNAL COMBUSTION ENGINE FOR VEHICLE COMPRISING AN INTAKE DUCT AND A DEFLECTOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0402584A FR2867522B1 (en) | 2004-03-12 | 2004-03-12 | INTERNAL COMBUSTION ENGINE FOR VEHICLE COMPRISING AN INTAKE DUCT AND A DEFLECTOR |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2867522A1 true FR2867522A1 (en) | 2005-09-16 |
| FR2867522B1 FR2867522B1 (en) | 2009-01-23 |
Family
ID=34896483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0402584A Expired - Fee Related FR2867522B1 (en) | 2004-03-12 | 2004-03-12 | INTERNAL COMBUSTION ENGINE FOR VEHICLE COMPRISING AN INTAKE DUCT AND A DEFLECTOR |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2867522B1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3422805A (en) * | 1966-11-16 | 1969-01-21 | Int Harvester Co | Engine inlet passage swirl device |
| US4232645A (en) * | 1979-03-09 | 1980-11-11 | Samuel Shiber | Variable geometry whirler |
| EP0074202A2 (en) * | 1981-08-28 | 1983-03-16 | Ricardo Consulting Engineers Limited | Inlet air swirl control means for I.C. engines |
| EP0719916A1 (en) | 1994-12-29 | 1996-07-03 | Institut Français du Pétrole | Method and device for recirculating exhaust gas for a spark ignited 4-cycle engine |
| GB2298896A (en) * | 1995-03-17 | 1996-09-18 | Ford Motor Co | I.c.engine cylinder charge stratification |
| DE10124859A1 (en) * | 2001-05-22 | 2002-11-28 | Bayerische Motoren Werke Ag | Inlet channel device for feeding a gas to the combustion chamber of an internal combustion engine comprises an adjusting device defining a through opening in a feed channel arranged upstream of a swirl channel section |
| DE10128500C1 (en) * | 2001-06-12 | 2003-02-06 | Ulrich Spicher | Guiding system for fluid fed into the cylinders of an internal combustion engine comprises guide elements rotating in opposite directions about the main flow axes of inlet channels |
-
2004
- 2004-03-12 FR FR0402584A patent/FR2867522B1/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3422805A (en) * | 1966-11-16 | 1969-01-21 | Int Harvester Co | Engine inlet passage swirl device |
| US4232645A (en) * | 1979-03-09 | 1980-11-11 | Samuel Shiber | Variable geometry whirler |
| EP0074202A2 (en) * | 1981-08-28 | 1983-03-16 | Ricardo Consulting Engineers Limited | Inlet air swirl control means for I.C. engines |
| EP0719916A1 (en) | 1994-12-29 | 1996-07-03 | Institut Français du Pétrole | Method and device for recirculating exhaust gas for a spark ignited 4-cycle engine |
| GB2298896A (en) * | 1995-03-17 | 1996-09-18 | Ford Motor Co | I.c.engine cylinder charge stratification |
| DE10124859A1 (en) * | 2001-05-22 | 2002-11-28 | Bayerische Motoren Werke Ag | Inlet channel device for feeding a gas to the combustion chamber of an internal combustion engine comprises an adjusting device defining a through opening in a feed channel arranged upstream of a swirl channel section |
| DE10128500C1 (en) * | 2001-06-12 | 2003-02-06 | Ulrich Spicher | Guiding system for fluid fed into the cylinders of an internal combustion engine comprises guide elements rotating in opposite directions about the main flow axes of inlet channels |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2867522B1 (en) | 2009-01-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20131129 |