FR2622638A1 - Device for an engine with mixed carburation - Google Patents
Device for an engine with mixed carburation Download PDFInfo
- Publication number
- FR2622638A1 FR2622638A1 FR8715380A FR8715380A FR2622638A1 FR 2622638 A1 FR2622638 A1 FR 2622638A1 FR 8715380 A FR8715380 A FR 8715380A FR 8715380 A FR8715380 A FR 8715380A FR 2622638 A1 FR2622638 A1 FR 2622638A1
- Authority
- FR
- France
- Prior art keywords
- carburetor
- carburetter
- engine
- octane number
- fuel
- 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.)
- Pending
Links
Classifications
-
- 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
- F02M13/00—Arrangements of two or more separate carburettors; Carburettors using more than one fuel
- F02M13/06—Arrangements of two or more separate carburettors; Carburettors using more than one fuel the carburettors using different fuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
CARBURATION MIXTE
Procéde permettant d'augmenter le rapport volumetrique des moteur a explosion sans provoquer de phénomène de DETONATION.MIXED FUEL
Procedure for increasing the volumetric ratio of internal combustion engines without causing DETONATION phenomenon.
-Le rendement d'un moteur à explosion dépend de son rapport volumétrique (V + v). -The efficiency of an internal combustion engine depends on its volumetric ratio (V + v).
v
-Le taux de compression dépend du rapport vol umêtri que. v
-The compression ratio depends on the volume flight ratio.
-Plus la compression est elevée : meilleur est le rendement du moteur. - The higher the compression: the better the efficiency of the engine.
-Le taux de compression maximum ne doit pas etre dépassé pour éviter le phénomène de détonation (cliquetis). -The maximum compression ratio must not be exceeded to avoid the phenomenon of detonation (clicking).
-Pour combattre la détonation on a recours à un carburant à indice d'octane élevé ; carburant généralement plus couteux et plus polluant qu'un carburant à indice d'octane inférieur. -To combat detonation, a high octane fuel is used; fuel generally more expensive and more polluting than a fuel with a lower octane number.
-Pour créer le melange explosif air-carburant on a généralement recours
Soit à une pompe d'injection
Soit à un carburateur
Soit à deux carburateurs
Sur les moteurs actuels, équipes de 2 Carburateurs
Ces 2 carburateurs ne sont alimentes que par un seul carburant. Ils produisent un air carburé dont le taux d'octane ne varit pas, il correspond à l'utilisation du moteur à sa puissance maximum.-To create the explosive air-fuel mixture we generally use
Either at an injection pump
Either to a carburetor
Either with two carburetors
On current engines, teams of 2 Carburetors
These 2 carburetors are powered by only one fuel. They produce a carbureted air whose octane rate does not vary, it corresponds to the use of the engine at its maximum power.
Lorsque le moteur fonctionne au ralenti ou à une puissance inférieure c'est le meme carburant qui est consommé, alors que la carburation aurait pu utiliser un carburant à indice d'octane plus faible. When the engine is running at idle or at lower power, the same fuel is consumed, whereas the carburetion could have used a lower octane fuel.
Pour résoudre cette incompatibilité entre une forte compression et un carburant à indice d'octane insuffisant pour cette compression?
La présente invention consiste à former dans la pipe d'admission un mélange explosif à indice d'octane variable
-Mélange à indice d'octane faible pour la marche du moteur à puissance réduite
-Mélange à indice d'octane élevé pour la marche du moteur à une puissance supérieure.To resolve this incompatibility between strong compression and an insufficient octane fuel for this compression?
The present invention consists in forming in the intake pipe an explosive mixture with variable octane number
-Mixture with low octane number for running the engine at reduced power
-Mixture with high octane number for running the engine at a higher power.
La richesse en octane du mélange explosif augmentant en fonction de l'augmentation de la puissance du moteur. The richness in octane of the explosive mixture increases as the engine power increases.
A titre descriptif mais non limitatif, la
CARBURATION MIXTE de cette invention peut être mise en pratique comme suit
La Figure 1 montre que le moteur est équipé de deux carburateurs C1 et C2.By way of description but not limitation, the
MIXED FUEL of this invention can be practiced as follows
Figure 1 shows that the engine is equipped with two carburetors C1 and C2.
- Chaque carburateur reçoit un carburant à indice d'octane différent (essence et alcool par exemple)
- Le premier carburateur C1 est alimenté par un carburant à indice d'octane inférieur (essence ordinaire par exemple) ce carburateur est seul actionné par le début de la course de la tige T pour la marche du moteur au ralenti et à faible puissance. A faible puissance la compression est faible il ne peut y avoir detonation. - Each carburetor receives a fuel with a different octane number (petrol and alcohol for example)
- The first C1 carburetor is powered by a fuel with a lower octane index (ordinary petrol for example). At low power the compression is weak there can be no detonation.
-Le carburateur C2 est alimenté par un carburant à indice d'octane elevé (alcool par exemple)
Le moteur fonctionne à moyenne puissance sur le carburateur C7 ; au moment ou l'accélérateur programme une augmentation de puissance le papillon du carburateur C2 s'ouvre à son tour.-The C2 carburetor is powered by a fuel with a high octane number (alcohol for example)
The engine operates at medium power on the C7 carburetor; when the accelerator programs an increase in power, the throttle valve of the carburetor C2 opens in turn.
La carburation C1 enrichie par la carburation de C2 composera un mélange explosif ayant un indice d'octane correspondant à la moyenne des 2 carburants indice d'octane calculé pour éviter la detonation. The carburetion C1 enriched by the carburetion of C2 will compose an explosive mixture having an octane number corresponding to the average of the 2 fuels octane number calculated to avoid detonation.
La figure II montre un détail B d'une commande d'accélération permettant d'actionner les 2 Carburateurs d'un manière différée. La boutonnière permettant d'ouvrir à retardement le carburateur C2. Figure II shows a detail B of an acceleration control allowing the 2 Carburettors to be actuated in a delayed manner. The buttonhole allowing delayed opening of the carburetor C2.
La figure III montre une autre maniere de réaliser une commande à action différée
La tige T de l'accélérateur est reliée uniquement au carburateur C1.Figure III shows another way to perform a delayed action command
The accelerator rod T is connected only to the carburetor C1.
L'ouverture du papillon du carburateur C2 est commandée indépendament par un petit servo moteur actionné comme pour les capsules barometriques par les variations de depression d'admission. The opening of the throttle valve of the C2 carburetor is independently controlled by a small servo motor actuated as for the barometric capsules by the variations in intake pressure.
Ces variations réultent de la plus ou moins grande ouverture du papillon du carburateur C1. These variations result from the more or less large opening of the butterfly of the carburetor C1.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8715380A FR2622638A1 (en) | 1987-11-03 | 1987-11-03 | Device for an engine with mixed carburation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8715380A FR2622638A1 (en) | 1987-11-03 | 1987-11-03 | Device for an engine with mixed carburation |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2622638A1 true FR2622638A1 (en) | 1989-05-05 |
Family
ID=9356541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8715380A Pending FR2622638A1 (en) | 1987-11-03 | 1987-11-03 | Device for an engine with mixed carburation |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2622638A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5775309A (en) * | 1997-07-14 | 1998-07-07 | Impco Technologies, Inc. | Pre-adjustable fueling system for dual fuel engine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE399807C (en) * | 1922-06-11 | 1924-08-12 | Waermekraft G M B H | Carburetor |
DE427685C (en) * | 1923-12-04 | 1926-04-15 | Motorenfabrik Deutz Akt Ges | Injection carburetor |
DE438801C (en) * | 1923-04-06 | 1926-12-27 | Standard Dev Company | Method for reducing knocking in internal combustion engines |
FR59569E (en) * | 1949-02-01 | 1954-06-28 | Method and device for introducing water into gasoline engines | |
FR2318317A1 (en) * | 1975-07-16 | 1977-02-11 | Overton Delbert | SYSTEM FOR SUPPLYING DUAL FUEL TO AN INTERNAL COMBUSTION ENGINE |
EP0027689A1 (en) * | 1979-09-25 | 1981-04-29 | Norbert L. Osborn | Application of turbocharger to an internal combustion engine |
JPS57200654A (en) * | 1981-06-03 | 1982-12-08 | Daihatsu Motor Co Ltd | Internal-combustion engine capable of utilizing various fuels |
-
1987
- 1987-11-03 FR FR8715380A patent/FR2622638A1/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE399807C (en) * | 1922-06-11 | 1924-08-12 | Waermekraft G M B H | Carburetor |
DE438801C (en) * | 1923-04-06 | 1926-12-27 | Standard Dev Company | Method for reducing knocking in internal combustion engines |
DE427685C (en) * | 1923-12-04 | 1926-04-15 | Motorenfabrik Deutz Akt Ges | Injection carburetor |
FR59569E (en) * | 1949-02-01 | 1954-06-28 | Method and device for introducing water into gasoline engines | |
FR2318317A1 (en) * | 1975-07-16 | 1977-02-11 | Overton Delbert | SYSTEM FOR SUPPLYING DUAL FUEL TO AN INTERNAL COMBUSTION ENGINE |
EP0027689A1 (en) * | 1979-09-25 | 1981-04-29 | Norbert L. Osborn | Application of turbocharger to an internal combustion engine |
JPS57200654A (en) * | 1981-06-03 | 1982-12-08 | Daihatsu Motor Co Ltd | Internal-combustion engine capable of utilizing various fuels |
Non-Patent Citations (2)
Title |
---|
ENGINEERING MATERIALS AND DESIGN, vol. 20, no. 6, juin 1976, page 22, Londres, GB; "FUTURE ENGINES" * |
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 55 (M-198)[1200], 5 mars 1983; & JP-A-57 200 654 (DAIHATSU KOGYO K.K.) 08-12-1982 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5775309A (en) * | 1997-07-14 | 1998-07-07 | Impco Technologies, Inc. | Pre-adjustable fueling system for dual fuel engine |
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