EP0050665A1 - Process and synthetic combustion chamber of variable turbulence - Google Patents
Process and synthetic combustion chamber of variable turbulenceInfo
- Publication number
- EP0050665A1 EP0050665A1 EP81901338A EP81901338A EP0050665A1 EP 0050665 A1 EP0050665 A1 EP 0050665A1 EP 81901338 A EP81901338 A EP 81901338A EP 81901338 A EP81901338 A EP 81901338A EP 0050665 A1 EP0050665 A1 EP 0050665A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- chamber
- combustion
- circulation
- fluid
- 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.)
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Classifications
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- 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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/02—Engines characterised by precombustion chambers the chamber being periodically isolated from its cylinder
- F02B19/04—Engines characterised by precombustion chambers the chamber being periodically isolated from its cylinder the isolation being effected by a protuberance on piston or cylinder head
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- 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
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
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- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
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- 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 invention relates to a process and a combustion chamber with variable turbulence used in high speed engines.
- the method and the unitary combustion chamber are also known, in which the absence of throttles in the path of the working fluid ensures a relatively reduced consumption of fuel, but has the disadvantage that they cannot operate at high speeds, following d '' a reduced level of organization of turbulence.
- the method and the synthetic combustion chamber, in accordance with the present invention overcome the disadvantages presented above, in that, in order to achieve reduced fuel consumption and increased flexibility of compression-ignition engines both as regards the range of turns and / or load, as regards the dimensional range, ensures the integral organization by volume of the circulation of fluid in the combustion chamber by the only temporary separation of the space from the tower room.
- the chamber forming a unitary whole, the combustion process as a whole constituting a synthesis between the chamber process unitary and the divided chamber method, the reinforcement of the turbulence being obtained as a result of the vectorial sum of at least three vortices, vortices with three-dimensional circulation and also by the enhancement of the threshold effect (squish) created by the piston, which accentuates the effect of transfer of the fluid between the one two enclosures which are separated by spatial profile which penetrates into the separation channel, profile defined by at least three steering surfaces, which produce vortices with three-dimensional circulation and constitute as a mobile braking threshold of the vortex enclosure, by concentrating the rich mixture which burns in the zone d u transfer channel, the circulation of the fluid in the swirling enclosure being thus determined, in order to meet the jet of fuel by equi-current and to move part of the fuel over the incandescent head of a candle.
- FIGS. 1 ... 7 Three examples of embodiments of the combustion chambers which apply the method according to the present invention are given, in relation to FIGS. 1 ... 7, which represent:
- the process of synthetic combustion in accordance with the present invention consists in the fact that the space of the ⁇ turbulence chamber is separated from the combustion chamber compartment located above the piston, only during the period of injection, mixture formation and combustion, i.e. in the final compression phase, during the rest of the cycle combustion chamber forming a unitary whole, in this way a reduction in gas losses is ensured and also an integral organization of the circulation following the vector sum of at least three vortices, vortices with three-dimensional circulation.
- the synthetic combustion process leads to the reinforcement of turbulence and by the enhancement of the threshold effect (squish) which accentuates the transfer effect, the maximums of which are situated at different angles -in the evolution of the cycle - the first that appears is the maximum crossing.
- the combustion chamber in accordance with the present invention, is formed by an enclosure a which constitutes the divided space located in a cylinder head 1 and an enclosure b, located in a piston 2, which constitutes the second space of the combustion chamber .
- the two combustion spaces a and b are linked together by a channel c formed between an inner surface d and a refractory insert 3 and an appropriate profile, integral with the piston 2, the channel ca a variable section only at the end of compression and at the beginning of the expansion faze for a period of approximately ⁇ 15 ° - 20 ° RA near the PMI.
- the maximum section of the channel c is established so that the retreat of the piston 2 unifies the spaces a and b oe which leads to the creation of an almost unitary chamber.
- the spatial profile e of the piston 2 is defined by two inclinations f and g, which at the same time constitute the direc main tions of the organization of the circulation of the fluid in the passage in and of the enclosure a in the enclosure b.
- the two inclinations f and g ensure the formation of vortices h, simmetric vortices - toric - i which add vactorial and produce a three-dimensional circulation fully organized in the entire volume of the combustion chamber. Aasurend a circulation fully organized in the entire volume of the chamber, allows the use of injectors 4 to one, or to several injection orifices whose jets are directly linked with the circulation of air in the combustion chamber.
- injectors with several orifices allows the application of the method and of constructive solutions, in accordance with the present invention also for engines of large dimensions.
- the synthetic combustion chamber consisting of an enclosure a temporally divided and an enclosure b, can be produced in various constructive variants, both with regard to the shape of the enclosure a and that of the enclosure b, which 'with regard to the compartmentalisation ratio between the two enclosures.
- the divided space has a sphero-conical shape and the degree of compartmentalization is approximately 50% and the circulation of air in the final compression faze first meets a boygie d ignition 5 and then enters the injection zone, antering the jet of fuel by equicurrent.
- the vortex enclosure has a cylindrical-spherical shape, which allows better integration of the jet of fuel in the organized fluid and a division ratio which tends towards 100%, the realization of which is also facilitated by the very low gas-dinamic losses, specific for the synthesis chambers in accordance with the invention.
- the air circulation in the final compression faze first encounters an ignition rod and then enters the injection zone, entraining the jet of fuel by equicurrent.
- a third constructive variant represented in FIG. 7, the flow of fluid flows through the enclosure a of the combustion chamber, firstly meeting the jet of fuel which it entails by equicurrent and deposits part of the fuel injected on the head glowing candle 5.
- the synthetic combustion chamber in accordance with the present invention without taking account of the constructive variants mentioned below, and which are not limiting, any variant or combination forming part of the present invention, can be applied to engines with slow speed or rapid, with black or forced admission, the condition of having an advance to the injection is not a limiting element.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Le procede de combustion de synthese, conformement a la presente invention se caracterise afin de realiser une consommation reduite de combustible et la croissance de la flexibilite des moteurs a allumage par compression tant en ce qui concerne la gamme de tours et de charge qu'en ce qui concerne la gamme de dimensionnement assure l'organisation integrale en volume de la circulation de fluide dans la chambre de combustion, par la separation seulement temporaire de l'espace de la chambre a tourbillons, du compartiment de la chambre de combustion situee au-dessus du piston, seulement pendant la periode de fin de compression, pendant le reste du cycle, la chambre de combustion representant un tout unitaire, le processus de combustion dans son ensemble constituant une synthese entre les procedes de combustion a chambre unitaire et chambre divisee, l'accroissement de la turbulence etant obtenu comme resultat de la somme vectoriale des trois tourbillons au moins, tourbillons a circulation tridimensionnelle, aussi par la mise en valeur de l'effet de seuil (squish) cree par le piston qui accentue l'effet de transvasement du fluide. La chambre de combustion a deux enceintes qui sont separes par un profil spatial qui penetre dans le canal de separation, profil defini par trois surfaces de direction au moins qui produisent des tourbillons a circulation tridimensionnelle et se constitue en tant que seuil mobile de freinage de l'enceinte de tourbillonnement, en concentrant le melange riche qui brule dans la zone du canal de transvasement, la circulation du fluide dans l'enceinte de tourbillonnement etant ainsi determinee, pour rencontrer le jet de combustible en equicourant et pour deplacer une partie du combustible sur la tete incandescente d'une bougie.The synthetic combustion process according to the present invention is characterized in order to achieve reduced fuel consumption and increased flexibility of compression-ignition engines both with regard to the range of revolutions and load as well as with regard to the range of revolutions and load. which concerns the range of sizing ensures the integral organization in volume of the circulation of fluid in the combustion chamber, by the only temporary separation of the space of the vortex chamber, from the compartment of the combustion chamber located above piston, only during the end of compression period, during the remainder of the cycle, the combustion chamber representing a unitary whole, the combustion process as a whole constituting a synthesis between the combustion processes with unitary chamber and divided chamber, l 'increase in turbulence being obtained as a result of the vectorial sum of at least three vortices, vortices with tr circulation idimensional, also by the enhancement of the threshold effect (squish) created by the piston which accentuates the fluid transfer effect. The combustion chamber has two enclosures which are separated by a spatial profile which penetrates into the separation channel, a profile defined by at least three steering surfaces which produce three-dimensional circulating vortices and act as a movable threshold of braking of the 'swirl chamber, by concentrating the rich mixture which burns in the area of the transfer channel, the circulation of the fluid in the swirl chamber being thus determined, to meet the jet of fuel in equicurrent and to move a part of the fuel on the incandescent head of a candle.
Description
Procédé et chambre de combustion de synthèse a turbulence variable. Variable turbulence synthesis process and combustion chamber.
DOMAINS TECHNIQUETECHNICAL AREAS
L'invention se réfère à un procédé et à une chambre de combustion à turbulence variable utilisés aux moteurs de grande vitesse.The invention relates to a process and a combustion chamber with variable turbulence used in high speed engines.
TECHNIQUE ANTERIEUREPRIOR ART
On connaît le procédé et la chambre de combustion type Ricardo, qui réalisent la possibilité de fonctionnement à
grande vitesse, par l'utilisation d'une chambre divisée, à circulation, organisée de manière tourbillonnaire, la section de liaison entre la chambre de pré-combustion et la chambre principale étant constante pendant toute la durée du cycle, avec une valeur optimisée d'ordre 1% de la surface active du piston. Ce procède et cette chambre présentent le désavantage, d'une part, qu'au transvasement du fluide moteur dans les deux sens par la section étranglée, conduit à de grandes pertes gazodynamiques, ce qui se matérialise par des consommations spécifiques de combustible relativement élevées, et d'autre part, nºassure qu'une organisation partielle de la circulation du fluide dans la cham bre divisée, en restant des zones centrales et périphériques nonorganisées.We know the Ricardo type process and combustion chamber, which realize the possibility of operation at high speed, by the use of a divided, circulating chamber, organized in a vortex, the connecting section between the pre-combustion chamber and the main chamber being constant throughout the cycle, with an optimized value d order 1% of the active surface of the piston. This process and this chamber have the disadvantage, on the one hand, that the transfer of the working fluid in both directions by the throttled section, leads to large gasodynamic losses, which materializes by relatively high specific fuel consumption, and on the other hand, it ensures only a partial organization of the circulation of the fluid in the divided chamber, while remaining unorganized central and peripheral zones.
On connaît aussi le procédé et la chambre de combustion unitaire, auxquels l'inexistence des étranglements dans la voie du fluide moteur assure une consommation relativement réduite de combustible, mais présente le désavantage qu'ils ne peuvent fonctionner à grandes vitesses, à la suite d'un niveau réduit d'organisation de la turbulence.The method and the unitary combustion chamber are also known, in which the absence of throttles in the path of the working fluid ensures a relatively reduced consumption of fuel, but has the disadvantage that they cannot operate at high speeds, following d '' a reduced level of organization of turbulence.
EXPOSÉ DE L'INVENTIONSTATEMENT OF THE INVENTION
Le procédé et la chambre de combustion de synthèse, conformément à la présente invention, écartent les désavantages présentés en haut, par le fait que, afin de réaliser une consommation réduite de combustible et une croissance de la flexibilité des moteurs à allumage par compression tant en ce qui concerne la gamme de tours et/or charge, qu'en ce qui concerne la gamme dimensionnelle, assure l'organisation intégrale en volume de la circulation de fluide dans la chambre de combustion par la séparation seulement temporaire de l'espace de la chambre à tour.
billons du compartiment de la chambre de combustion, situé audessus du piston, seulement dans la période de fin de compression, au reste du cycle, la chambre formant un tout unitaire, le processus de combustion dans son ensemble constituant une synthèse entre le procédé à chambre unitaire et le procédé à chambre divisée, le renforcement de la turbulence étant obtenu comme résultat de la somme vectoriale de trois tourbillons au moins, tourbillons à circulation tridimensionnelle et aussi par la mise en valeur de l'effet de seuil (squish) créé par le piston, qui accentue l'effet de transvasement du fluide entre le un deux enceintes qui sont séparées par profil spatial qui pénètre dans le canal de séparation, profil défini par trois surface de direction au moins, qui produisent des tourbillons à circulation tridimensionelle et se constitue en tant que seuil mobile de freinage de l'enceinte de tourbillonnement, en ooncentrant le mélange riche qui brûle dans la zone du canal de transvasement, la circulation du fluide dans l'enceinte de tourbillonnement étant ainsi déterminée, pour rencontrer le jet de combustible en équioourant et pour déplacer une partie du combustible sur la tδte incandescente d'une bougie.The method and the synthetic combustion chamber, in accordance with the present invention, overcome the disadvantages presented above, in that, in order to achieve reduced fuel consumption and increased flexibility of compression-ignition engines both as regards the range of turns and / or load, as regards the dimensional range, ensures the integral organization by volume of the circulation of fluid in the combustion chamber by the only temporary separation of the space from the tower room. ridges of the combustion chamber compartment, located above the piston, only in the compression end period, during the rest of the cycle, the chamber forming a unitary whole, the combustion process as a whole constituting a synthesis between the chamber process unitary and the divided chamber method, the reinforcement of the turbulence being obtained as a result of the vectorial sum of at least three vortices, vortices with three-dimensional circulation and also by the enhancement of the threshold effect (squish) created by the piston, which accentuates the effect of transfer of the fluid between the one two enclosures which are separated by spatial profile which penetrates into the separation channel, profile defined by at least three steering surfaces, which produce vortices with three-dimensional circulation and constitute as a mobile braking threshold of the vortex enclosure, by concentrating the rich mixture which burns in the zone d u transfer channel, the circulation of the fluid in the swirling enclosure being thus determined, in order to meet the jet of fuel by equi-current and to move part of the fuel over the incandescent head of a candle.
AVANTAGESBENEFITS
Le prooédé et la chambre de combustion de synthèse présentent les avantages suivantes :The process and the synthetic combustion chamber have the following advantages:
- assurent une consommation réduite de combustible, comparable à cette des chambres de combustion unitaires;- ensure reduced fuel consumption, comparable to that of the unit combustion chambers;
- permettent une flexibilité du moteur tant en ce qui concerne le domaine de tours, qu'en ce qui concerne le degré de chargement.
- assurent l'extension de la mise en pratique des chambres de turbulence à des gammes dimensionnelles non- limitatives de moteurs;- allow flexibility of the engine both with regard to the range of revolutions and with regard to the degree of loading. - ensure the extension of the application of the turbulence chambers to non-limiting dimensional ranges of engines;
- permettant l'extension de l'utilisation des chambres de turbulence aussi aux moteurs suralimentés.- allowing the extension of the use of turbulence chambers also to supercharged engines.
DESCRIPTION SOMMAIRE DES DESSINSSUMMARY DESCRIPTION OF THE DRAWINGS
On donne trois exemples de réalisation des chambres de combustion qui appliquent le procédé conformément à la présente invention, en relation avec les figures 1...7, qui représentent :Three examples of embodiments of the combustion chambers which apply the method according to the present invention are given, in relation to FIGS. 1 ... 7, which represent:
- fig. 1 - section axiale par une chambre de combustion de synthèse conformément à l'invention.- fig. 1 - axial section through a synthetic combustion chamber in accordance with the invention.
- fig. 2 - vue d'en haut du profil du piston.- fig. 2 - top view of the piston profile.
- fig. 3 - section transversale, conformément au plan I-I de la fig. 1.- fig. 3 - cross section, in accordance with plane I-I of fig. 1.
- fig. 4 -vue d'en haut du profil du piston représenté dans la fig. 3.- fig. 4 -view from above of the piston profile shown in fig. 3.
- fig. 5 - section par un moteur, dans la zone de la chambre de synthèse, conformément à l'invention, réalisée dans une première variante constructive.- fig. 5 - section by a motor, in the area of the synthesis chamber, in accordance with the invention, produced in a first constructive variant.
- fig. 6 - idem dans la deuxième variante constructive.- fig. 6 - ditto in the second constructive variant.
- fig. 7 - idem dans la troisième variante constructive.- fig. 7 - ditto in the third constructive variant.
MEILLEURE MANIERE DE REALISER L'INVENTIONBEST WAY TO IMPLEMENT THE INVENTION
Le procédé de combustion de synthèse, conformément à la présente invention consiste dans le fait que l'espace de la
±hambre de turbulence est séparé du compartiment de la chambre de combustion situé au-dessus du piston, seulement dans la période d'injection, de formation du melange et de combustion, à savoir dans la phase finale de compression, au reste du cycle la chambre de combustion formant un tout unitaire, de cette manière est assurée une réduction des pertes gazodinamiques et aussi une organisation intégrale de la circulation à la suite de la somme vectoriale de trois tourbillons au moins, tourbillons à circulation tridimensionnelle.The process of synthetic combustion, in accordance with the present invention consists in the fact that the space of the ± turbulence chamber is separated from the combustion chamber compartment located above the piston, only during the period of injection, mixture formation and combustion, i.e. in the final compression phase, during the rest of the cycle combustion chamber forming a unitary whole, in this way a reduction in gas losses is ensured and also an integral organization of the circulation following the vector sum of at least three vortices, vortices with three-dimensional circulation.
Le prooédé de combustion de synthèse, conformément à la présente invention, conduit au renforcement de la turbulence et par la mise en valeur de l'effet de seuil(squish)qui accentue l'effet de transvasement, dont les maximums sont situées à différents angles-dans l'évolution du cycle - le premier que apparait étant le maximum de traversée.The synthetic combustion process, in accordance with the present invention, leads to the reinforcement of turbulence and by the enhancement of the threshold effect (squish) which accentuates the transfer effect, the maximums of which are situated at different angles -in the evolution of the cycle - the first that appears is the maximum crossing.
La chambre de combustion, conformément à la présente invention, est formée d'une enceinte a qui constitue l'espace divisé situé dans une culasse 1 et une enceinte b, située dans un piston 2, qui constitue le deuxième espace de la ohambre de combustion. Les deux espaces de combustion a et b sont liés entre eux par un canal c constitué entre une surface intérieure d et une insertion réfractaire 3 et un profil adiquat e, solidair avec le piston 2, le canal c a une section variable seulement à le fin de la compression et au commencement de la faze de détente pendant une période d'environ ± 15° - 20° RA à la proximité du PMI. La section maximale du canal c est établie de manière que la retraite du piston 2, unifie les espaces a et b oe qui oonduit à la réalisation d'une chambre presque unitaire.The combustion chamber, in accordance with the present invention, is formed by an enclosure a which constitutes the divided space located in a cylinder head 1 and an enclosure b, located in a piston 2, which constitutes the second space of the combustion chamber . The two combustion spaces a and b are linked together by a channel c formed between an inner surface d and a refractory insert 3 and an appropriate profile, integral with the piston 2, the channel ca a variable section only at the end of compression and at the beginning of the expansion faze for a period of approximately ± 15 ° - 20 ° RA near the PMI. The maximum section of the channel c is established so that the retreat of the piston 2 unifies the spaces a and b oe which leads to the creation of an almost unitary chamber.
Le profil spatial e du piston 2 est défini par deux inclinations f et g, qui constituent en même temps les direc
tions principales de l'organisation de la circulation du fluide au passage dans et de l'enceinte a dans l'enceinte b.The spatial profile e of the piston 2 is defined by two inclinations f and g, which at the same time constitute the direc main tions of the organization of the circulation of the fluid in the passage in and of the enclosure a in the enclosure b.
Les deux inclinations f et g assurent la formation des tourbillons h, des tourbillons simetriques - toriques - i qui s'additionnent vactorial et produissent une circulation tridimensionelle intégralement organisée dans le volume tout entier de la chambre de combustion. Aasurend une circulation intégralement organisée dans le volume tout entier de la chambre, permet l'utilisation des injecteurs 4 à un, ou à plusieurs orifices d'injection dont les jets sont directement liés avec la circulation de l'air dans la chambre de combustion.The two inclinations f and g ensure the formation of vortices h, simmetric vortices - toric - i which add vactorial and produce a three-dimensional circulation fully organized in the entire volume of the combustion chamber. Aasurend a circulation fully organized in the entire volume of the chamber, allows the use of injectors 4 to one, or to several injection orifices whose jets are directly linked with the circulation of air in the combustion chamber.
La possibilité d'utiliser les injecteurs à plusieurs orifices permet l'application du procédé et des solutions constructives, conformément à la présente invention aussi pour les moteurs de grandes dimensions.The possibility of using injectors with several orifices allows the application of the method and of constructive solutions, in accordance with the present invention also for engines of large dimensions.
La chambre de combustion de synthèse constituée d'une enceinte a divisée temporainement et d'une enceinte b, peut être réalisée en diverses variantes constructives, tant en ce qui concerne la forme de l'enceinte a et celle de l'enceinte b, qu'en ce qui concerne le rapport de compartimentâtion entre les deux enceintes.The synthetic combustion chamber consisting of an enclosure a temporally divided and an enclosure b, can be produced in various constructive variants, both with regard to the shape of the enclosure a and that of the enclosure b, which 'with regard to the compartmentalisation ratio between the two enclosures.
Dans une première variante, représentée dans la figure 5, l'espace divisé a a une forme sphéro-conique et le degré de compartimentation est d'environ 50% et la circulation de l'air dans la faze finale de compression rencontre premièrement une boygie d'allumage 5 et puis pénétre dans la zone d'injection, en antrenant le jet de combustible en équicourant.In a first variant, represented in FIG. 5, the divided space has a sphero-conical shape and the degree of compartmentalization is approximately 50% and the circulation of air in the final compression faze first meets a boygie d ignition 5 and then enters the injection zone, antering the jet of fuel by equicurrent.
Dans la deuxième variante constructive, conformément à la figure 6, l'enceinte de tourbillonement a a une forme cilindro-sphérique, ce qui permet une meilleure intégration du jet de
combustible dans le fluide organisé et un rapport de division qui tend vers 100% dont la réalisation est facilité aussi par les pertes gazo-dinamiques très réduites, spécifiques pour les chambres de synthèse conformément à l'invention.In the second constructive variant, in accordance with FIG. 6, the vortex enclosure has a cylindrical-spherical shape, which allows better integration of the jet of fuel in the organized fluid and a division ratio which tends towards 100%, the realization of which is also facilitated by the very low gas-dinamic losses, specific for the synthesis chambers in accordance with the invention.
La circulation de l'air dans la faze finale de compression rencontre premièrement une bongie d'allumage et puis pénètre dans la zone d'injection, en entraînant le jet de combustible en équicourant.The air circulation in the final compression faze first encounters an ignition rod and then enters the injection zone, entraining the jet of fuel by equicurrent.
Dans une troisième variante constructive, représentée dans la figure 7, le courant de fluide parcourt l'incinte a de la chambre de combustion, en rencontrant premièrement le jet de combustible qu'il entraîne en équicourant et dépose une partie du combustible injecté sur la tête incandescente de la bougie 5.In a third constructive variant, represented in FIG. 7, the flow of fluid flows through the enclosure a of the combustion chamber, firstly meeting the jet of fuel which it entails by equicurrent and deposits part of the fuel injected on the head glowing candle 5.
On réalise, de cette manière, une réduction du retardement de l'auto - allumage en réduisant ainsi la durité du fonctionnement des moteurs Diesel et facilitant ainsi l'accomplissement des conditions de la combustion des plusieurs combustibles.In this way, a reduction in the self-ignition delay is achieved, thereby reducing the operating life of the diesel engines and thus facilitating the fulfillment of the conditions for the combustion of several fuels.
POSIBILITE D'EXPLOITATION INDUSTRIELLEPOSSIBILITY OF INDUSTRIAL OPERATION
La chambre de combustion de synthèse, conformément à la présente invention sans tenant compte des variantes constructives ci-dessous mentionnées, et qui ne sont pas limitatives, tout variante on combinaison faisant parties de la présente invention, peut être appliquée aux moteurs à vitesse, lente ou rapide, à admission noirinale ou forcée, la condition d'avoir un avans à l'injection n'étant pas un élément limitativ.
The synthetic combustion chamber, in accordance with the present invention without taking account of the constructive variants mentioned below, and which are not limiting, any variant or combination forming part of the present invention, can be applied to engines with slow speed or rapid, with black or forced admission, the condition of having an advance to the injection is not a limiting element.
Claims
1. Procédé de combustion aux moteurs avec des chambres divisées avec injection mono et multijet et allumage par compression, caractérisé par le fait que, afin de réaliser une consommation réduite de combustible et la croissance de la fie. bilité des moteurs à allumage par compression tant en ce qui concerne la gamme de tours qu'en oe qui concerne la gamme de dimensionnement, assure une organisation intégrale en volume de la circulation du fluide dans la chambre de combustion, l'espace de l'enceinte de turbulence est séparé temporairement, du compartiment de la chambre de combustion d'au au-dessus du piston, seulement pendant la période d'injection, de la formation du mélange et de la combustion, et précisément dans la phase finale de la compression, pendant le reste du cycle la chambre de combustion constituant un tout unitaire, le processus de combustion dans son ensemble constituant une synthèse entre les procédées de combustion avec des chambre unitaires et chambres divisées, l'intensification de la turbulence étant obtenue comme résultat de la somme vectoriale des trois tourbillons au moins, tourbillons à circulation tridimensionnelle, aussi par la mise en valeur de l'effet de seuil(squish)crée par le piston qui accentue l'effet de transvasement du fluide entre les deux enceintes de la chambre de combustion.1. Combustion process in engines with divided chambers with single and multi-jet injection and compression ignition, characterized in that, in order to achieve reduced fuel consumption and fuel growth. The bility of compression-ignition engines, both with regard to the range of revolutions and with regard to the dimensioning range, ensures complete organization by volume of the circulation of the fluid in the combustion chamber, the space of the turbulence chamber is temporarily separated from the combustion chamber compartment of above the piston, only during the injection period, the formation of the mixture and the combustion, and precisely in the final phase of compression , during the rest of the cycle the combustion chamber constituting a unitary whole, the combustion process as a whole constituting a synthesis between the combustion processes with unitary chambers and divided chambers, the intensification of the turbulence being obtained as a result of the vectorial sum of at least three vortices, three-dimensional vortices, also by highlighting the threshold effect (squish) created by the piston which accentuates the transfer effect of the fluid between the two chambers of the combustion chamber.
2. La chambre de combustion divisée, dans laquelle se réalise le procédé de combustion conformément à la revendication 1 (procédé de synthèse) caractérisée par le fait qu'afin d'organiser une circulation intégrale du fluide dans la chambre de combustion utilise la séparation temporaire d'une enceinte (a) d'une autre enceinte (b), qui se fait à l'aide d'un piston (2) qui présente un profil spatial (e), qui dans la phase finale de compression pénétre dans un canal (c) séparant ainsi les deux enceintes (a) et (b), le profil (e) étant un corps défini par trois surfaces de divisions au moins, dont une est inclinée avec un angle (f°) et les deux autres sont assises d'une manière symétrique, formant entre elles un angle (g), profil qui produit des tourbillons à circulation tridimensionnelle, qui renferme tout le volume de la chambre de combustion.2. The divided combustion chamber, in which the combustion process is carried out in accordance with claim 1 (synthesis process) characterized in that in order to organize an integral circulation of the fluid in the combustion chamber uses temporary separation of one enclosure (a) of another enclosure (b), which is done using a piston (2) which has a spatial profile (e), which in the final phase of compression enters a channel (c) thus separating the two enclosures (a) and (b), the profile (e) being a body defined by at least three dividing surfaces, one of which is inclined at an angle (f °) and the other two are seated in a symmetrical manner, forming between them an angle (g), profile which produces vortices with three-dimensional circulation, which contains the entire volume of the combustion chamber.
3. La chambre de combustion de synthèse, conformément à la revendication 2, caractérisée par le fait qu'afin d'augmenter l'efficience du phénomène de freinage du tourbillon et de localiser le mélange riche dans la zone centrale du canal de traversée, un profil (e) situé sur la tète du piston (2) se constitue en tant que seuil mobile de freinage d'une enceinte (a) de tourbillonement.3. The synthetic combustion chamber, according to claim 2, characterized in that in order to increase the efficiency of the braking phenomenon of the vortex and to locate the rich mixture in the central zone of the crossing channel, a profile (e) located on the head of the piston (2) is constituted as a mobile braking threshold of a vortex enclosure (a).
4. La chambre de combustion de synthèse, conformément aux revendications 2 et 3; caractérisée par le fait qu' afin de réaliser une meilleure intégration du jet de conbustible dans le fluide organisé - l'enceinte (a) de tourbillonement est de forme cylindrique-sphérique et constitue en même temps une chambre de pré-combustion (prechambre), une chambre de tourbillonement et une chambre d'injection directe, le rapport de division de la chambre de combustion de synthèse tendant vers 100% (en faveur de la chambre située d'en la culasse).4. The synthetic combustion chamber, according to claims 2 and 3; characterized by the fact that in order to achieve better integration of the fuel jet in the organized fluid - the vortex enclosure (a) is of cylindrical-spherical shape and at the same time constitutes a pre-combustion chamber (prechamber), a vortex chamber and a direct injection chamber, the division ratio of the synthetic combustion chamber tending towards 100% (in favor of the chamber located in the breech).
5. La chambre de combustion de synthèse, conformément aux revendications 2 et 3, caractérisée par le fait qu'afin de diminuer la durité du processus de combustion diessel, par la réduction du retard à l'auto-allumage, le profil (e) situé sur la tète du piston (2) est ainsi déterminé que la circulation du fluide par le canal (c) puisse parcourir l'enceinte de turbulence (a) ainsi qu'il puisse rencontrer d' abord le jet de oombustible d'un inj eoteur (4) qu'il entraine en équicourant en déplaçant une partie du combustible injecté sur la tête incandescente d'une bougie (5) en facilitant ainsi l'accomplissement des conditions de l'allumage des plusieurs carburants. 5. The synthetic combustion chamber, according to claims 2 and 3, characterized in that in order to reduce the duration of the diessel combustion process, by reducing the delay in self-ignition, the profile (e) located on the piston head (2) is thus determined that the circulation of the fluid through the channel (c) can travel the turbulence chamber (a) so that it can first meet the jet of fuel from an engine injector (4) which it causes by equicurrent by displacing part of the fuel injected on the incandescent head of a candle (5) thus facilitating the fulfillment of the conditions for the ignition of several fuels.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO80100981A RO77086A2 (en) | 1980-04-27 | 1980-04-27 | PROCEDURE AND CHAMBER OF SYNTHESIS OF VARIABLE TURBULENT SYNTHESIS |
| RO100981 | 1980-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0050665A1 true EP0050665A1 (en) | 1982-05-05 |
Family
ID=20108442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81901338A Withdrawn EP0050665A1 (en) | 1980-04-27 | 1981-04-21 | Process and synthetic combustion chamber of variable turbulence |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0050665A1 (en) |
| GB (1) | GB2088952B (en) |
| RO (1) | RO77086A2 (en) |
| WO (1) | WO1981003048A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9791494B2 (en) | 2012-01-20 | 2017-10-17 | Lear Corporation | Apparatus and method for diagnostics of a capacitive sensor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8421445D0 (en) * | 1984-08-23 | 1984-09-26 | Greenhough J H | Ic engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2826185A (en) * | 1954-08-25 | 1958-03-11 | Gen Motors Corp | Combustion chamber for engines |
| FR1529533A (en) * | 1965-11-23 | 1968-06-21 | Inst Francais Du Petrole | Further development of compression ignition engines |
-
1980
- 1980-04-27 RO RO80100981A patent/RO77086A2/en unknown
-
1981
- 1981-04-21 EP EP81901338A patent/EP0050665A1/en not_active Withdrawn
- 1981-04-21 GB GB8201858A patent/GB2088952B/en not_active Expired
- 1981-04-21 WO PCT/RO1981/000002 patent/WO1981003048A1/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8103048A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9791494B2 (en) | 2012-01-20 | 2017-10-17 | Lear Corporation | Apparatus and method for diagnostics of a capacitive sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1981003048A1 (en) | 1981-10-29 |
| GB2088952A (en) | 1982-06-16 |
| RO77086A2 (en) | 1983-02-01 |
| GB2088952B (en) | 1984-08-22 |
| RO77086B1 (en) | 1983-01-30 |
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Inventor name: SARATEANU, EUGEN Inventor name: PAUL, MARIUS ANGELO |