BE332206A - - Google Patents

Info

Publication number
BE332206A
BE332206A BE332206DA BE332206A BE 332206 A BE332206 A BE 332206A BE 332206D A BE332206D A BE 332206DA BE 332206 A BE332206 A BE 332206A
Authority
BE
Belgium
Prior art keywords
combustion chamber
additional combustion
constriction
air
throttle
Prior art date
Application number
Other languages
French (fr)
Publication of BE332206A publication Critical patent/BE332206A/fr

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0675Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston the combustion space being substantially spherical, hemispherical, ellipsoid or parabolic
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00Engines characterised by precombustion chambers
    • F02B19/14Engines characterised by precombustion chambers with compression ignition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0603Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0633Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston the combustion space being almost completely enclosed in the piston, i.e. having a small inlet in comparison to its volume
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/16Indirect injection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0618Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
    • F02B23/0621Squish flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00Engines characterised by air compression and subsequent fuel addition
    • F02B3/06Engines characterised by air compression and subsequent fuel addition with compression ignition
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Description

       

   <Desc/Clms Page number 1> 
 



  Moteur à. huile à chambre de combustion supplémentaire. 



   La présente invention concerne les moteurs à huile comportant une chambre de combustion supplémentaire communi- quant par un étranglement avec la chambre de combustion prin- cipale.. 



   Suivant cette invention on forme l'étranglement non dans le piston lui-même, comme on l'a proposé antérieurement, mais dans une pièce rapportée. En remplagant la pièce rappor- tée il est ainsi possible de modifier la section de l'étran- glement et les conditions de fonctionnement dans la chambre de combustion. 



  1 

 <Desc/Clms Page number 2> 

 
Le dessin annexé représente en coupe longitudinale quelques exemples de réalisation de l'objet de l'invention. a désigne le piston, b le cylindre,   et ±   la tuyère combustible qui peut être établie aussi bien pour l'injec- tion du combustible sans air que pour l'injection au moyen d'air comprimé. La chambre de combustion supplémentaire est en communication avec la chambre de combustion principale .! par une section   rétrécie f   formant étranglement. Dans tous les cas représentés, la chambre de combustion supplémentai- re se trouve dans une pièce rapportée en forme de cloche. 



  La tuyère   à   combustible ± et   l'étranglement ±   sont situés dans le même axe pour que le combustible soit injecté au centre de l'air pénétrant par l'étranglement dans la cham- bre de combustion supplémentaire. En avant de 1* étranglement est de préférence disposé un   élargissement 1   en forme d'en- tonnoir pour favoriser le mélange du combustible et de l'air. 



   Sur les Figs. 1 et 2, la chambre de combustion sup- plémentaire se trouve dans le piston de la machine. Ces deux exemples ne différent l'un de l'autre qu'en ce que dans le premier cas   1* étranglement   f est créé dans la cloche rap- portée elle-même tandis   qu'à   la Fig. 2 il est prévu dans un anneau séparé d servant à la fixation de la cloche rapportée. 



  Dans le second cas la chambre de combustion supplémentaire est à double paroi de sorte que la cloche rapportée est entou- rée d'une chambre d'air isolante h. Entre les surfaces de joint des deux pièces rapportées d et k, on peut placer une ou plusieurs garnitures d'étanchéité. 



   Dans l'exemple de réalisation de la   Fig.3,   la cham- bre de combustion supplémentaire se trouve dans la culasse du, cylindre et la   tuyère .±   est placée coaxialement dans la paroi du cylindre. La partie élargie en forme   d'entonnoir @   en   @   

 <Desc/Clms Page number 3> 

 avant du point d'étranglement est formée ici dans l'épaisseur de la culasse du cylindre. 



   La Fig. 4 montre la disposition de la chambre de combustion supplémentaire dans la paroi latérale du cylindre. 



  On a choisi ici comme exemple une machine comportant deux pistons se déplaçant en sens inverse. Entre les deux pistons a se trouve la chambre de combustion principale,   à   laquelle se raccorde latéralement la chambre de combustion supplémen- taire. Les pistons présentent sur leurs faces opposées, par exemple dans des pièces rapportées spéciales, des évidements qui forment ensemble, dans la position représentée du point mort intérieur des pistons,   l'élargissement @   en forme d'en- tonnoir en avant de l'étranglement f. En face de la chambre de combustion supplémentaire se trouve la tuyère c logée dans la paroi latérale du cylindre. 



   Le mode de fonctionnement du dispositif décrit est le même dans tous les cas et se fait comme suit: Lors de la compression de l'air préalablement aspiré, il se pro- duit à travers le rétrécissement f, un violent courant d'air vers la chambre de combustion supplémentaire. Le combustible sortant de la tuyère ± vers la fin de la course de compres- sion, parvient déjà, avant le rétrécissement, dans ce courant d'air et se mélange à celui-ci. Ce rétrécissement agissant à la manière d'une tuyère , ces deux fluides se mélangent alors très intimement.. A   la=   fin de la course , de compression.se produit l'allumage qui se propage partout où se trouve du mélange combustible. 



   L'invention peut être appliquée aux moteurs à huile de tous genres, notamment aux moteurs   à   allumage spontané, aux moteurs à allumage spécial de mise en marche et aux moteurs   à.   culasse incandescente. Dans les exemples représentés, le mo-   @   

 <Desc/Clms Page number 4> 

 teur est établi pour le fonctionnement à deux temps;   l'arri-   vée d'air et l'échappement se font donc d'une manière connue au.moyen de lumières commandées par le piston. Il va de soi que l'invention convient également pour toutes les machines qui comportent des soupapes commandées spécialement pour   l'amenée   d'air et pour l'échappement, et parmi lesquelles les moteurs à quatre temps sont les plus importants. 



   REVENDICATIONS 
 EMI4.1 
 ¯, ###¯¯#-.  # #   # # * # ### # 
1.- Moteur à huile comportant une chambre de com- bustion supplémentaire communiquant par un étranglement avec la chambre de combustion principale, caractérisé en ce que l'étranglement est formé dans une pièce rapportée.



   <Desc / Clms Page number 1>
 



  Motor to. additional combustion chamber oil.



   The present invention relates to oil engines comprising an additional combustion chamber communicating through a throttle with the main combustion chamber.



   According to this invention, the constriction is formed not in the piston itself, as has been proposed previously, but in an attached part. By replacing the attached part, it is thus possible to modify the cross-section of the throttle and the operating conditions in the combustion chamber.



  1

 <Desc / Clms Page number 2>

 
The appended drawing represents in longitudinal section some embodiments of the object of the invention. a designates the piston, b the cylinder, and ± the fuel nozzle which can be set up both for the injection of fuel without air or for injection by means of compressed air. The additional combustion chamber communicates with the main combustion chamber.! by a narrowed section f forming a constriction. In all cases shown, the additional combustion chamber is located in a bell-shaped insert.



  The fuel nozzle ± and the throttle ± are located in the same axis so that the fuel is injected in the center of the air entering through the throttle into the additional combustion chamber. In front of the constriction there is preferably a funnel-shaped widening 1 to aid mixing of fuel and air.



   In Figs. 1 and 2, the additional combustion chamber is located in the machine piston. These two examples differ from each other only in that in the first case the constriction f is created in the attached bell itself while in FIG. 2 it is provided in a separate ring d for fixing the bell insert.



  In the second case, the additional combustion chamber is double-walled so that the attached bell is surrounded by an insulating air chamber h. Between the sealing surfaces of the two add-ons d and k, one or more gaskets can be placed.



   In the exemplary embodiment of Fig. 3, the additional combustion chamber is located in the cylinder head, and the nozzle ± is placed coaxially in the cylinder wall. The enlarged funnel-shaped part @ en @

 <Desc / Clms Page number 3>

 front of the throttle point is formed here in the thickness of the cylinder head.



   Fig. 4 shows the arrangement of the additional combustion chamber in the side wall of the cylinder.



  We have chosen here as an example a machine comprising two pistons moving in the opposite direction. Between the two pistons a is the main combustion chamber, to which the additional combustion chamber is laterally connected. The pistons have on their opposite faces, for example in special inserts, recesses which together form, in the position shown of the internal dead center of the pistons, the funnel-shaped widening @ in front of the throttle. f. Opposite the additional combustion chamber is the nozzle c housed in the side wall of the cylinder.



   The operating mode of the device described is the same in all cases and is carried out as follows: When compressing the air previously sucked in, through the narrowing f, a violent current of air occurs towards the outlet. additional combustion chamber. The fuel coming out of the nozzle ± towards the end of the compression stroke already enters this air stream before the constriction and mixes with it. This constriction acting in the manner of a nozzle, these two fluids are then mixed very intimately. At the end of the stroke, compression occurs, ignition which propagates wherever there is combustible mixture.



   The invention can be applied to oil engines of all kinds, in particular to spontaneous ignition engines, to special ignition engines for starting and to gasoline engines. incandescent cylinder head. In the examples shown, the mo- @

 <Desc / Clms Page number 4>

 tor is established for two-stroke operation; air intake and exhaust therefore take place in a known manner by means of lights controlled by the piston. It goes without saying that the invention is also suitable for all machines which have specially controlled valves for the air supply and for the exhaust, and among which the four-stroke engines are the most important.



   CLAIMS
 EMI4.1
 ¯, ### ¯¯ # -. # # # # * # ### #
1.- Oil engine comprising an additional combustion chamber communicating through a throttle with the main combustion chamber, characterized in that the throttle is formed in an attached part.


    

Claims (1)

2.- Moteur à huile suivant la revendication 1, caractérisé en ce que l'étranglement est créé dans une piè- ce rapportée annulaire servant à la fixation de la pièce rapportée qui forme la chambre de combustion supplémentai- re. 2.- Oil engine according to claim 1, characterized in that the constriction is created in an annular insert serving for fixing the insert which forms the additional combustion chamber. 3.- Moteur à huile suivant la revendication 1-ou.2 ca- ractérisé en ce qu'en avant de l'étranglement se trouve un élargissement en entonnoir formé soit dans la pièce rapportée formant la chambre de combustion supplémentaire, soit dans la pièce rapportée annulaire. 3.- Oil engine according to claim 1-or.2 charac- terized in that in front of the constriction there is a funnel-shaped widening formed either in the attached part forming the additional combustion chamber, or in the part. annular insert.
BE332206D BE332206A (en)

Publications (1)

Publication Number Publication Date
BE332206A true BE332206A (en)

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ID=11166

Family Applications (1)

Application Number Title Priority Date Filing Date
BE332206D BE332206A (en)

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