FR2708671A1 - Injectors cooling device on petrol injection engine. - Google Patents
Injectors cooling device on petrol injection engine. Download PDFInfo
- Publication number
- FR2708671A1 FR2708671A1 FR9309873A FR9309873A FR2708671A1 FR 2708671 A1 FR2708671 A1 FR 2708671A1 FR 9309873 A FR9309873 A FR 9309873A FR 9309873 A FR9309873 A FR 9309873A FR 2708671 A1 FR2708671 A1 FR 2708671A1
- Authority
- FR
- France
- Prior art keywords
- tube
- injectors
- injector
- injection engine
- cooling
- 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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
- F02M53/043—Injectors with heating, cooling, or thermally-insulating means with cooling means other than air cooling
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
L'invention concerne un dispositif permettant le refroidissement des injecteurs sur moteur à injection électronique. Il est constitué d'un tube d'arrivée d'essence (1); de ce tube part un tube capillaire (2) arrivant à l'intérieur du tube de raccordement de l'injecteur (3) en traversant le tube d'arrivée d'essence initial (4), ce tube étant obturé à l'opposé du raccordement du régulateur de pression; l'injecteur est raccordé sans modifications au tube d'arrivée d'essence initial. Le dispositif selon l'invention est destiné au refroidissement des injecteurs sur moteur à injection électronique.The invention relates to a device for cooling the injectors on an electronic injection engine. It consists of a fuel inlet tube (1); from this tube leaves a capillary tube (2) arriving inside the connecting tube of the injector (3) passing through the initial gasoline inlet tube (4), this tube being closed off opposite the connection of the pressure regulator; the injector is connected without modifications to the initial fuel inlet pipe. The device according to the invention is intended for cooling the injectors on an electronic injection engine.
Description
La présente invention concerne un dispositif de refroidissement des injecteurs sur moteur à injection électronique.The present invention relates to a device for cooling injectors on an electronic injection engine.
Actuellement, ces injecteurs ne sont pratiquement pas refroidis, car l'essence en provenance du réservoir ne fait qu'effleurer l'extrémité du tube de jonction de l'injecteur avec le tube d'arrivée d'essence. Une autre disposition consiste à entourer d'une bague le corps de l'injecteur, solution qui entraîne une construction spéciale des injecteurs existants et un refroidissement partiel.Currently, these injectors are practically not cooled, because the fuel from the tank only scratches the end of the junction tube of the injector with the fuel delivery tube. Another provision is to surround a ring of the injector body, a solution which leads to a special construction of existing injectors and partial cooling.
Le dispositif selon l'invention comprend (voir plan suivant figure 2): 1 tube d'arrivée d'essence (1) en acier diamètre extérieur 5 m/m, diamètre intérieur 4 m/m (section de passage 12 m/m2), 1 tube capillaire (2) en cuivre ou en acier, diamètre extérieur 3 m/m, diamètre intérieur 2 m/m (section de passage 3 m/m2). Ce tube capillaire relie le tube d'arrivée d'essence à l'injecteur en traversant le tube existant (4) et se positionne concentriquement à l'intérieur du tube de raccordement de l'injecteur sur toute la longueur de ce tube (environ 12 m/m). L'injecteur est ensuite raccordé aux canalisations existantes sans modifications, la canalisation principale étant obturée côté arrivée d'essence et reliée sans modifications au régulateur de pression. Une bague sera brasée (5) pour assurer un renfort au tube capillaire entre le tube (1) et le tube (4).The device according to the invention comprises (see plane according to FIG. 2): 1 gasoline inlet tube (1) in steel outer diameter 5 m / m, inside diameter 4 m / m (passage section 12 m / m 2) , 1 capillary tube (2) made of copper or steel, outer diameter 3 m / m, internal diameter 2 m / m (passage section 3 m / m2). This capillary tube connects the fuel delivery tube to the injector through the existing tube (4) and is positioned concentrically inside the connection tube of the injector over the entire length of this tube (about 12 m / m). The injector is then connected to the existing pipelines without modifications, the main line being closed on the fuel inlet side and connected without modifications to the pressure regulator. A ring will be brazed (5) to provide reinforcement to the capillary tube between the tube (1) and the tube (4).
Description du fonctionnement:
L'essence en provenance du réservoir arrive sous une pression de 2 bars par le tube capillaire à l'intérieur de l'injecteur en le refroidissant, puis chemine vers le régulateur de pression par l'espace annulaire (section de passage 6 m/m2) laissé entre le tube capillaire et le tube de raccordement de l'injecteur.Functional description:
Gasoline from the tank arrives under a pressure of 2 bar through the capillary tube inside the injector by cooling it, then travels towards the pressure regulator through the annular space (passage section 6 m / m2 ) left between the capillary tube and the connection tube of the injector.
Intérêt de ce dispositif:
Le refroidissement de l'injecteur est efficace, ce qui permet une meilleure maîtrise du dosage du carburant ; en effet, lorsque le moteur tourne au ralenti ou lorsqu'au cours de décélération, I'injection est coupée, la température du carburant augmente sensiblement au niveau du point d'injection car il ne circule plus ou très peu à l'intérieur de l'injecteur, ce qui compte tenu de la tension de vapeur de carburant, entraîne une modification de la carburation (mélange plus pauvre pour une ouverture du papillon déterminée).Interest of this device:
The cooling of the injector is effective, which allows a better control of the fuel dosage; in fact, when the engine is idling or when during deceleration, the injection is cut off, the fuel temperature increases substantially at the injection point because there is little or no circulation inside the engine. injector, which taking into account the fuel vapor pressure, causes a change in carburation (leaner mixture for a specific opening of the butterfly).
Dans tous les cas de fonctionnement du moteur, la température du carburant au point d'injection est mieux stabilisé par ce dispositif.In all cases of engine operation, the fuel temperature at the injection point is better stabilized by this device.
Remarque 1:
Le tube capillaire de diamètre intérieur 2 m/m est suffisant car le diamètre de la buse de l'injecteur ne dépasse pas I m/m ; à la pression de 2 bars, le débit du carburant de refroidissement est d'environ 70 litres par heure pour un moteur de 4 cylindres.Note 1:
The capillary tube of internal diameter 2 m / m is sufficient because the diameter of the nozzle of the injector does not exceed I m / m; at a pressure of 2 bar, the flow rate of the cooling fuel is about 70 liters per hour for a 4-cylinder engine.
Remarque 2:
Ce dispositif s'adapte sur tout type d'injecteur à commande par calculateur électronique sans modifications de ces injecteurs.Note 2:
This device adapts to any type of electronically controlled injector without modifications of these injectors.
Remarque 3:
La longueur du tube capillaire n'est pas limitative, ce qui autorise toute forme de raccordement.Note 3:
The length of the capillary tube is not limiting, which allows any form of connection.
Remarque 4:
Dans le cas de pays chaud, il peut être intéressant de refroidir l'essence en utilisant le climatiseur.Note 4:
In the case of hot country, it can be interesting to cool the gasoline using the air conditioner.
Exemple d'application industrielle:
Moteur à essence à injection électronique. Example of industrial application:
Electronic injection gasoline engine.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9309873A FR2708671B1 (en) | 1993-08-05 | 1993-08-05 | Injector cooling device on petrol injection engine. |
| PCT/FR1994/000964 WO1995004883A1 (en) | 1993-08-05 | 1994-07-29 | Device for cooling the injectors of an electronic fuel-injection engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9309873A FR2708671B1 (en) | 1993-08-05 | 1993-08-05 | Injector cooling device on petrol injection engine. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2708671A1 true FR2708671A1 (en) | 1995-02-10 |
| FR2708671B1 FR2708671B1 (en) | 1996-01-19 |
Family
ID=9450124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9309873A Expired - Fee Related FR2708671B1 (en) | 1993-08-05 | 1993-08-05 | Injector cooling device on petrol injection engine. |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2708671B1 (en) |
| WO (1) | WO1995004883A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2416803A1 (en) * | 1974-04-06 | 1975-10-16 | Daimler Benz Ag | Electronic controlled petrol injection system - injector feed pipe has internal separating wall to assist fuel scavenging |
| GB2073316A (en) * | 1980-03-20 | 1981-10-14 | Bosch Gmbh Robert | Fuel injection installation for preventing vapour lock |
| JPS60256549A (en) * | 1984-06-01 | 1985-12-18 | Hitachi Ltd | Fuel injector |
| EP0193098A1 (en) * | 1985-02-27 | 1986-09-03 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Fuel distribution conduit for a spark ignition engine |
| DE3542786A1 (en) * | 1985-12-04 | 1987-06-11 | Audi Ag | Fuel distribution pipe |
| DE3728576A1 (en) * | 1987-08-27 | 1989-03-09 | Opel Adam Ag | Fuel injection system |
-
1993
- 1993-08-05 FR FR9309873A patent/FR2708671B1/en not_active Expired - Fee Related
-
1994
- 1994-07-29 WO PCT/FR1994/000964 patent/WO1995004883A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2416803A1 (en) * | 1974-04-06 | 1975-10-16 | Daimler Benz Ag | Electronic controlled petrol injection system - injector feed pipe has internal separating wall to assist fuel scavenging |
| GB2073316A (en) * | 1980-03-20 | 1981-10-14 | Bosch Gmbh Robert | Fuel injection installation for preventing vapour lock |
| JPS60256549A (en) * | 1984-06-01 | 1985-12-18 | Hitachi Ltd | Fuel injector |
| EP0193098A1 (en) * | 1985-02-27 | 1986-09-03 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Fuel distribution conduit for a spark ignition engine |
| DE3542786A1 (en) * | 1985-12-04 | 1987-06-11 | Audi Ag | Fuel distribution pipe |
| DE3728576A1 (en) * | 1987-08-27 | 1989-03-09 | Opel Adam Ag | Fuel injection system |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 10, no. 130 (M - 478) 14 May 1986 (1986-05-14) * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2708671B1 (en) | 1996-01-19 |
| WO1995004883A1 (en) | 1995-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20060428 |