FR2863667A1 - Fuel supply device for spark ignition engine with direct injection, has tubular duct with fuel return hole and pressure relief valve arranged on its one end, where valve acts as de-airing valve and drain valve of fuel distribution ramp - Google Patents
Fuel supply device for spark ignition engine with direct injection, has tubular duct with fuel return hole and pressure relief valve arranged on its one end, where valve acts as de-airing valve and drain valve of fuel distribution ramp Download PDFInfo
- Publication number
- FR2863667A1 FR2863667A1 FR0412139A FR0412139A FR2863667A1 FR 2863667 A1 FR2863667 A1 FR 2863667A1 FR 0412139 A FR0412139 A FR 0412139A FR 0412139 A FR0412139 A FR 0412139A FR 2863667 A1 FR2863667 A1 FR 2863667A1
- Authority
- FR
- France
- Prior art keywords
- valve
- fuel
- supply device
- fuel supply
- limiting valve
- 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
- 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
- F02M69/54—Arrangement of fuel pressure regulators
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/007—Venting means
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/005—Pressure relief valves
-
- 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
Description
L'invention concerne un dispositif d'alimentation en carburant pour moteurThe invention relates to a fuel supply device for an engine
à combustion interne, en particulier pour moteur à allumage par étincelle à injection directe de véhicule automobile notamment, comportant une conduite internal combustion engine, in particular for a spark-ignition engine with direct injection of a motor vehicle in particular, comprising a pipe
haute pression pour le carburant qui est reliée à une soupape de limitation de pression. En outre, l'invention concerne un procédé de mise en uvre d'un moteur à combustion interne, en particulier d'un moteur à allumage par étincelle à injection directe pour véhicule automobile notamment, comprenant un dispositif d'alimentation en carburant qui comporte une conduite haute pression pour le carburant qui est reliée à une soupape de limitation de pression. high pressure for fuel that is connected to a pressure limiting valve. In addition, the invention relates to a method for implementing an internal combustion engine, in particular a spark ignition engine with direct injection for a motor vehicle in particular, comprising a fuel supply device which comprises a high pressure fuel line which is connected to a pressure relief valve.
On sait, par exemple par DE 100 44 120 Al, que le distributeur de carburant d'un moteur à allumage par étincelle à injection directe est équipé d'une soupape de limitation de pression (soupape de sûreté) qui s'ouvre en cas de dépassement d'une pression prédéfinie qui peut être réglée de manière permanente dans la soupape de limitation de pression, le carburant pouvant s'échapper et la pression à l'intérieur du distributeur de carburant pouvant baisser en cas d'ouverture. It is known, for example by DE 100 44 120 A1, that the fuel distributor of a spark ignition engine with direct injection is equipped with a pressure limiting valve (safety valve) which opens in case of Exceeding a preset pressure that can be permanently set in the pressure relief valve, the fuel can escape and the pressure inside the fuel dispenser can drop when opened.
L'objectif de l'invention est d'améliorer un système de carburant (notamment un système haute pression) pour moteur à combustion interne (notamment pour moteur à allumage par étincelle à injection directe). The object of the invention is to improve a fuel system (in particular a high pressure system) for an internal combustion engine (especially for a spark ignition engine with direct injection).
Cet objectif est atteint selon l'invention grâce à un dispositif d'alimentation en carburant du type susmentionné, caractérisé en ce que la soupape de limitation de pression est, de plus, réalisée sous forme de soupape de désaérage et de vidange, et grâce à un procédé du type susmentionné, caractérisé en ce que la conduite haute pression est désaérée et vidangée au moyen de la soupape de limitation de pression. Des agencements avantageux de l'invention sont indiqués dans la suite du document. This object is achieved according to the invention by means of a fuel supply device of the above-mentioned type, characterized in that the pressure limiting valve is also made in the form of a deaerating and emptying valve, and thanks to a method of the aforementioned type, characterized in that the high pressure line is deaerated and drained by means of the pressure limiting valve. Advantageous arrangements of the invention are indicated in the remainder of the document.
Cela a pour avantage que la soupape de limitation de pression sert en même temps de soupape de désaérage et de soupape de vidange pour le dispositif d'alimentation en carburant, de sorte que le temps nécessaire pour remplir de carburant le dispositif d'alimentation en carburant ou pour vider le carburant du dispositif d'alimentation en carburant est sensiblement réduit. This has the advantage that the pressure relief valve serves at the same time as a deaerator valve and a drain valve for the fuel supply device, so that the time required to refuel the fuel supply device or to empty the fuel from the fuel supply device is substantially reduced.
La conduite haute pression est réalisée, par exemple, sous forme de rampe de distribution de carburant. The high-pressure pipe is produced, for example, in the form of a fuel distribution ramp.
La soupape de limitation de pression est utilement disposée dans un conduit secondaire tubulaire de la conduite haute pression pour le carburant, le conduit secondaire comportant un orifice de retour. Le conduit secondaire est ouvert à une extrémité éloignée de la conduite haute pression, la soupape de limitation de pression étant insérée dans ce côté ouvert tout en obturant celui-ci. The pressure relief valve is conveniently disposed in a tubular secondary conduit of the high pressure fuel line, the secondary conduit having a return port. The secondary conduit is open at an end remote from the high pressure line, the pressure limiting valve being inserted into this open side while closing it.
Dans un mode de réalisation préféré, la soupape de limitation de pression située dans le conduit secondaire peut être déplacée axialement dans une première position et dans une seconde position, la soupape de limitation de pression séparant l'orifice de retour de la conduite haute pression dans la première position, et l'orifice de retour étant relié à la conduite haute pression de manière à laisser passer les fluides dans la seconde position. La soupape de limitation de pression est fixée de manière amovible dans la première position de sorte qu'elle est facilement démontable et verrouillable, par exemple à la main. In a preferred embodiment, the pressure limiting valve in the secondary conduit may be axially displaced in a first position and a second position, the pressure limiting valve separating the return port from the high pressure line in the first position, and the return port being connected to the high pressure line so as to pass the fluids in the second position. The pressure limiting valve is releasably secured in the first position so that it is easily removable and lockable, for example by hand.
Dans un mode de réalisation préféré différent, la soupape de limitation de pression comporte un canal qui relie la conduite haute pression à l'orifice de retour, auquel cas il est prévu, dans la soupape de limitation de pression, un élément de fermeture qui peut être déplacé dans une position de fermeture obturant le canal et dans une position ouvrant le canal. L'élément de fermeture est utilement sollicité par une force élastique en direction de la position de fermeture, un élément formant ressort qui pousse l'élément de fermeture en position de fermeture étant alors de préférence prévu. In a different preferred embodiment, the pressure limiting valve has a channel which connects the high pressure line to the return port, in which case there is provided in the pressure limiting valve a closure member which can be moved into a closed position closing the channel and in a position opening the channel. The closure member is usefully biased by an elastic force towards the closed position, a spring member which urges the closure member into the closed position then being preferably provided.
D'autres caractéristiques, avantages et agencements intéressants de l'invention ressortiront plus clairement à la lecture de la description qui va suivre à titre d'exemple en référence aux dessins annexés, sur lesquels: la figure 1 représente, en perspective, une rampe de distribution de carburant haute pression qui est destinée à un moteur à allumage par étincelle à injection directe et qui fait partie d'un dispositif d'alimentation en carburant conforme à l'invention; la figure 2 est une représentation agrandie d'une partie de la rampe de distribution de carburant haute pression selon la figure 1, avec une soupape de limitation de pression; la figure 3 est une coupe schématique d'un premier mode de réalisation préféré d'une soupape de limitation de pression installée dans un dispositif d'alimentation en carburant conforme à l'invention et qui comporte une fonction de désaérage et de vidange; et la figure 4 est une coupe schématique d'un deuxième mode de réalisation préféré d'une soupape de limitation de pression installée dans un dispositif d'alimentation en carburant conforme à l'invention et qui comporte une fonction de désaérage et de vidange. Other characteristics, advantages and interesting arrangements of the invention will emerge more clearly on reading the following description given by way of example with reference to the appended drawings, in which: FIG. 1 represents, in perspective, a ramp of high-pressure fuel distribution which is intended for a direct injection spark ignition engine and which is part of a fuel supply device according to the invention; Figure 2 is an enlarged representation of a portion of the high pressure fuel delivery manifold of Figure 1 with a pressure limiting valve; Figure 3 is a schematic section of a first preferred embodiment of a pressure limiting valve installed in a fuel supply device according to the invention and which comprises a de-aerating and emptying function; and Figure 4 is a schematic sectional view of a second preferred embodiment of a pressure limiting valve installed in a fuel supply device according to the invention and which has a de-aeration and emptying function.
Le dispositif d'alimentation en carburant d'un moteur à allumage par étincelle à injection directe représenté sur les figures 1 et 2 est réalisé sous la forme d'une rampe de distribution de carburant 10 et comprend: des conduits secondaires 12 desservant des soupapes d'injection correspondantes (non représentées) ; un conduit secondaire 14 sur lequel un capteur de pression 16 est disposé ; et un conduit secondaire 18 sur lequel une soupape de limitation de pression 20 ainsi qu'un orifice de retour avec tubulure de retour 22 sont disposés. Selon l'invention, la soupape de limitation de pression 20 permet de désaérer le dispositif d'alimentation en carburant pour remplir plus rapidement de carburant la rampe de distribution de carburant 10, mais aussi de le vidanger pour enlever le carburant de la rampe de distribution de carburant 10. The fuel supply device of a direct injection spark ignition engine shown in FIGS. 1 and 2 is embodied as a fuel distribution manifold 10 and comprises: secondary ducts 12 serving fuel injection valves; corresponding injection (not shown); a secondary duct 14 on which a pressure sensor 16 is disposed; and a secondary conduit 18 on which a pressure relief valve 20 and a return pipe return port 22 are disposed. According to the invention, the pressure-limiting valve 20 makes it possible to deaerate the fuel supply device in order to fill the fuel distribution ramp 10 more rapidly with fuel, but also to empty it to remove the fuel from the distribution ramp. of fuel 10.
A cet effet, selon un premier mode de réalisation préféré représenté sur la figure 3, la soupape de limitation de pression 20 est disposée de manière axialement mobile dans le conduit secondaire 18. Dans une première position 24 de la soupape de limitation de pression 20, l'orifice de retour 26 est fermé par celle-ci. Dans une seconde position 28 de la soupape de limitation de pression 20, l'orifice de retour est ouvert et du carburant ou de l'air peuvent s'écouler hors de la rampe de distribution de carburant 10, comme cela est indiqué au moyen de la flèche 30. La soupape de limitation de pression 20 est fixée de manière amovible dans la première position 24 et elle peut, par exemple manuellement, être démontée et déplacée axialement dans la seconde position 28. For this purpose, according to a first preferred embodiment shown in FIG. 3, the pressure limiting valve 20 is disposed axially movably in the secondary duct 18. In a first position 24 of the pressure limiting valve 20, the return orifice 26 is closed by it. In a second position 28 of the pressure limiting valve 20, the return port is open and fuel or air can flow out of the fuel delivery manifold 10, as indicated by means of the arrow 30. The pressure limiting valve 20 is removably fixed in the first position 24 and can, for example manually, be disassembled and moved axially in the second position 28.
Selon un deuxième mode de réalisation préféré de la soupape de limitation de pression 20 qui est représenté sur la figure 4, ladite soupape comporte un canal 32 qui relie un canal de carburant, ménagé dans la rampe de distribution de carburant 10, à l'orifice de retour 26. Ce canal 32 est fermé par une bille 34 pouvant être déplacée axialement dans la soupape de limitation de pression 20. Un ressort 36 exerce sur cette bille 32 une force dans le sens de la fermeture de manière que, en fonctionnement normal, le canal 32 ménagé dans la soupape de limitation de pression 20 soit fermé. Il est par exemple prévu que le ressort 36 puisse être déchargé manuellement depuis l'extérieur de sorte que la bille 34 puisse se déplacer axialement dans une position ouvrant le canal et que du carburant ou de l'air puisse alors s'écouler hors de la rampe de distribution de carburant 10 en passant par l'orifice de retour. Une ouverture forcée du dispositif de fermeture du canal 32 par la bille 34 est également possible. According to a second preferred embodiment of the pressure limiting valve 20 which is shown in FIG. 4, said valve comprises a channel 32 which connects a fuel channel, formed in the fuel distribution ramp 10, to the orifice 26. This channel 32 is closed by a ball 34 that can be moved axially in the pressure limiting valve 20. A spring 36 exerts on the ball 32 a force in the closing direction so that, in normal operation, the channel 32 formed in the pressure limiting valve 20 is closed. It is for example provided that the spring 36 can be discharged manually from the outside so that the ball 34 can move axially in a position opening the channel and that fuel or air can then flow out of the fuel delivery ramp 10 through the return port. A forced opening of the closing device of the channel 32 by the ball 34 is also possible.
Bien que l'invention ait été particulièrement montrée et décrite en se référant à des modes de réalisation préférés de celle-ci, il sera compris aisément par les personnes expérimentées dans cette technique que des modifications dans la forme et dans des détails peuvent être effectuées sans sortir de l'esprit ni du domaine de l'invention. Although the invention has been particularly shown and described with reference to preferred embodiments thereof, it will be readily understood by those skilled in the art that changes in form and detail can be made without difficulty. out of the mind or the field of invention.
LISTE DES REPERESLIST OF REFERENCES
rampe de distribution de carburant 12 conduits secondaires desservant les soupapes d'injection correspondantes 14 conduit secondaire avec capteur de pression 16 capteur de pression 18 conduit secondaire avec soupape de limitation de pression 20 soupape de limitation de pression 22 tubulure de retour 24 première position 26 orifice de retour 28 seconde position 30 flèche 32 canal 34 bille 36 ressort fuel distribution manifold 12 secondary ducts serving the corresponding injection valves 14 secondary duct with pressure sensor 16 pressure sensor 18 secondary duct with pressure limiting valve 20 pressure limiting valve 22 return pipe 24 first position 26 orifice back 28 second position 30 arrow 32 channel 34 ball 36 spring
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003158864 DE10358864A1 (en) | 2003-12-16 | 2003-12-16 | Fuel supply device for an internal combustion engine and method for operating this |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2863667A1 true FR2863667A1 (en) | 2005-06-17 |
Family
ID=34609490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0412139A Pending FR2863667A1 (en) | 2003-12-16 | 2004-11-16 | Fuel supply device for spark ignition engine with direct injection, has tubular duct with fuel return hole and pressure relief valve arranged on its one end, where valve acts as de-airing valve and drain valve of fuel distribution ramp |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10358864A1 (en) |
FR (1) | FR2863667A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT512438B1 (en) * | 2012-01-27 | 2015-09-15 | Bosch Gmbh Robert | VALVE BLOCK FOR A HIGH-PRESSURE MEMORY OF A COMMON-RAIL HEAVY-OIL INJECTION SYSTEM |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1073840A1 (en) * | 1998-04-24 | 2001-02-07 | Robert Bosch Gmbh | Sequence valve in a fuel injection system for internal combustion engines |
DE10044120A1 (en) | 2000-09-07 | 2002-04-04 | Bosch Gmbh Robert | Common Rail System |
WO2002042633A1 (en) * | 2000-11-22 | 2002-05-30 | Siemens Aktiengesellschaft | Injection system for an internal combustion engine and method for regulation and/or bleeding of said system |
-
2003
- 2003-12-16 DE DE2003158864 patent/DE10358864A1/en not_active Withdrawn
-
2004
- 2004-11-16 FR FR0412139A patent/FR2863667A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1073840A1 (en) * | 1998-04-24 | 2001-02-07 | Robert Bosch Gmbh | Sequence valve in a fuel injection system for internal combustion engines |
DE10044120A1 (en) | 2000-09-07 | 2002-04-04 | Bosch Gmbh Robert | Common Rail System |
WO2002042633A1 (en) * | 2000-11-22 | 2002-05-30 | Siemens Aktiengesellschaft | Injection system for an internal combustion engine and method for regulation and/or bleeding of said system |
Also Published As
Publication number | Publication date |
---|---|
DE10358864A1 (en) | 2005-07-14 |
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