BE542987A - - Google Patents
Info
- Publication number
- BE542987A BE542987A BE542987DA BE542987A BE 542987 A BE542987 A BE 542987A BE 542987D A BE542987D A BE 542987DA BE 542987 A BE542987 A BE 542987A
- Authority
- BE
- Belgium
- Prior art keywords
- fuel
- intake
- injection
- internal combustion
- combustion engine
- Prior art date
Links
- 239000000446 fuel Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000013517 stratification Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000008241 heterogeneous mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder
-
- 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
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B2023/102—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the spark plug being placed offset the cylinder centre axis
-
- 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/16—Indirect injection
-
- 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
Landscapes
- 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)
Description
<Desc/Clms Page number 1>
Les moteurs à explosion sont actuellement alimentés en combustible selon deux modes : carburation ou injection.
On sait que l'alimentation par injection de combux tible dans la chambre de combustion ou le cylindre permet de réaliser un mélange non homogène ou stratifié d' air et de com bustible, et qu'en associant correctement la stratification avec la turbulence, on peut soit brûler des mélanges riches donnant une puissance élevée, soit brûler des mélanges plus pauvres que ceux obtenue avec la carburation et obtenir un rendement accru.
Toutefois, les installations d'injection se sont avérées jusqu'à présent coûteuses et compliquées.
<Desc/Clms Page number 2>
La présente invention permet d'obtenir les avantagea de l'injection directe c'est-à-dire dans le cylindre ou la chambra de combustion) avec une installation plus simple que celles utilisées jusqu'à ce jour. Elle consiste à amener le combustible le plus près possible en amont de l'orifice d'admis., sion dans le cylindrejuste avant le début de la périt d'ad mission, un chevauchement des deux opérations (injection et admission) étant possible, Avec ce procédé, il n'est pas néces saire de bien pulvériser le combustible, qui, entrainé aveo l'air en début d'admission, est pulvérisé et partiellement vaporisé au passage de l'orifice d'admission qui, peu ouverte produit un laminage important.
D'autre part, tout le combustible entrant dans le cylindre en début .d'admission, il ne passe en fin d'admission que de l'air pur; on réalisé donc un mélange hétérogène. L'expérience montre que ce résultat n'est pas ob tenu si l'on fait arriver l'essence en permanence,c'est-à dire de façon continue, près de l'orifice d'admission ou encore si on réalise l'injection pendant l'admission à moins que l'injection ne soit réalisée au moyen de jets pénétrant par l'ouverture de l'orifice d'admission directement dans le cylin- dre, mais dans se cas on réalise, entait, de l'injection directe.
La figure unique du dessin annexé montre un mode de réalisation de la présente invention.
Un injecteur 1 est placé dans le conduit d'admis,,ion tout près de la soupape 2. Le piston 3 a une dorme telle qu'il délimite avec la paroi dela cubasse,dans la région de la sou pape d'échappement 4 une chambre de turbu lense dans laquelle est placée la bougie 5
<Desc/Clms Page number 3>
La :fonctionnement est le suivant :
On amène le combustible par l'injecteur 1 en fin d'échappement. La soupape d'admission 2 s'ouvre entraînant d'abord le combustible avec de l'air, la deuxième phase d'ad- mission se faisant avec de l'air pur Vers la fin de la compres- sion la majeure partie du mélange hétérogène passe dans la chambre de turbulence 6 dans laquelle on déclenche l'allumage aumoyen de la bousie 5.
Ainsi que cala s'obtient déjà avec l'injection directe, on peut, grâce à l'association de la stra tificatino et de la turbulence correctement ordonnée par ap- port à la bougie, brûler des mélanges riches donnant une puis- sance élevée et des mélanges pauvres donnant un bon rendement thermique.
Il est bien entendu que le mode de réalisation de l'inventionqui a été décrit ci. dessus en référence au dessin annexé a été donné à titre purement indicatif et nullement limitatif et que de nombreuses modifications peuvent être appor- 'bées sans qu'on s'écarte pour cela du cadre de la présente invention.
<Desc / Clms Page number 1>
Internal combustion engines are currently supplied with fuel in two modes: carburetion or injection.
It is known that the supply by injection of fuel into the combustion chamber or the cylinder makes it possible to produce a non-homogeneous or stratified mixture of air and fuel, and that by correctly associating the stratification with the turbulence, it is possible. either burn rich mixtures giving a high power, or burn leaner mixtures than those obtained with carburization and obtain an increased efficiency.
However, injection installations have so far proved to be expensive and complicated.
<Desc / Clms Page number 2>
The present invention makes it possible to obtain the advantages of direct injection, that is to say into the cylinder or the combustion chamber) with a simpler installation than those used to date. It consists in bringing the fuel as close as possible upstream of the intake port., Ing into the cylinder just before the start of the intake perit, an overlap of the two operations (injection and intake) being possible, With In this process, it is not necessary to properly atomize the fuel, which, entrained with the air at the start of the intake, is atomized and partially vaporized as it passes through the intake orifice which, when open, produces a rolling important.
On the other hand, all the fuel entering the cylinder at the start of admission. At the end of admission only pure air passes; a heterogeneous mixture is therefore produced. Experience shows that this result is not obtained if the gasoline is made to arrive permanently, that is to say continuously, near the inlet or even if the injection during the admission unless the injection is carried out by means of jets penetrating through the opening of the admission orifice directly into the cylinder, but in this case injection is carried out direct.
The single figure of the accompanying drawing shows an embodiment of the present invention.
An injector 1 is placed in the intake duct, ion very close to the valve 2. The piston 3 has a shape such that it delimits with the wall of the cubasse, in the region of the exhaust valve 4 a turbulence chamber in which the candle 5 is placed
<Desc / Clms Page number 3>
The: operation is as follows:
The fuel is fed through injector 1 at the end of the exhaust. The inlet valve 2 opens, driving the fuel first with air, the second intake phase being with pure air Towards the end of the compression the major part of the mixture heterogeneous passes into the turbulence chamber 6 in which the ignition is triggered by means of the bousie 5.
As is already obtained with direct injection, it is possible, thanks to the association of the stra tificatino and the turbulence correctly ordered by the application of the spark plug, to burn rich mixtures giving a high power and poor mixtures giving good thermal efficiency.
It is understood that the embodiment of the invention which has been described herein. Above, with reference to the accompanying drawing, has been given purely as an indication and in no way limiting and that numerous modifications can be made without departing for this from the scope of the present invention.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE542987A true BE542987A (en) |
Family
ID=171477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE542987D BE542987A (en) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE542987A (en) |
-
0
- BE BE542987D patent/BE542987A/fr unknown
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