EP1384000B1 - Dispositif d'injection de carburant pour moteur a combustion - Google Patents
Dispositif d'injection de carburant pour moteur a combustion Download PDFInfo
- Publication number
- EP1384000B1 EP1384000B1 EP02737785A EP02737785A EP1384000B1 EP 1384000 B1 EP1384000 B1 EP 1384000B1 EP 02737785 A EP02737785 A EP 02737785A EP 02737785 A EP02737785 A EP 02737785A EP 1384000 B1 EP1384000 B1 EP 1384000B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- space
- accumulator piston
- accumulator
- shank
- 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.)
- Expired - Lifetime
Links
Images
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
-
- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
-
- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
- F02M2200/505—Adjusting spring tension by sliding spring seats
Definitions
- the invention is based on one Fuel injection device for an internal combustion engine according to the preamble of claim 1.
- Such a fuel injection device is by DE 39 00 763 A1 known.
- This fuel injector has a high pressure fuel pump and Fuel injector for a cylinder of Internal combustion engine on.
- the high-pressure fuel pump has one driven by the internal combustion engine, one Pump working space limiting pump piston, whereby by an electrically controlled valve connects the Pump work space is controlled with a relief space.
- the fuel injection valve has an injection valve member on, controlled by the at least one injection opening and that through the one with the pump work room connected pressure chamber prevailing pressure against the force a closing spring arranged in a spring chamber in a Opening direction is movable.
- the closing spring is supported on the one hand at least indirectly on the injection valve member and on the other hand, at least indirectly from a storage piston.
- the accumulator piston is on its closing spring opposite side of the prevailing in the pump work room Pressurized and against the force of the closing spring in a lifting movement movable.
- the piston is one Starting position at low pressure in the pressure chamber in the Storage space movable, the evasive stroke movement of the Storage piston in the storage space by a stop is limited.
- the storage piston has one in one Connection hole between the storage space and the Spring chamber arranged and protruding into the spring chamber Shaft part on. With the evasive stroke movement of the Accumulator piston is powered by this fuel Storage space through a between the shaft part and the Connection hole existing gap in the spring chamber repressed. This will dampen the stroke movement of the Storage piston causes.
- the damping of the movement of the Accumulator piston can move over the stroke of the accumulator piston be constant or such that the damping at the beginning of the Evasion stroke movement is strong and then decreases. It was found that the damping achieved here is not is sufficient so that the accumulator piston with high Speed hits the stop and thereby causes annoying noises.
- the fuel injection device with the Features according to claim 1 has the advantage that through the formation of the shaft part that the in the Starting position of the accumulator piston in the Connecting bore arranged shaft section with smaller cross section and in the evasive stroke movement in the connecting portion immersing the shaft section has a larger cross section, at the beginning of Evasive stroke movement with a lower damping and with increasing evasive stroke movement a stronger damping of the Movement of the accumulator piston is present, so that this hits the stop only at low speed and no disturbing or only a little noise caused.
- Training according to claim 3 enables in a simple manner Use a support element with the required strength an adjustment of the position of the shaft part to Accumulator piston.
- the training according to claim 4 enables it by using balls with different Diameter, which as standardized components in different diameters available with fine gradation are adjusting the position of the shaft part.
- the Training according to claim 5 allows that a stronger Damping only after a partial escape stroke of the accumulator piston takes effect.
- FIG. 1 shows a Fuel injection device for an internal combustion engine in a simplified schematic representation
- Figure 3 den Accumulator piston in a cross section along line III-III in Figure 2
- Figure 4 the section II with the storage piston in an evasive position
- Figure 5 the section II with the Accumulator piston according to a second embodiment.
- FIG. 1 to 5 is one Fuel injection device for an internal combustion engine 10 of a motor vehicle shown.
- the internal combustion engine has one or more cylinders, each for A fuel injector with a cylinder High pressure fuel pump 10 and one Fuel injection valve 12 is provided.
- the High pressure fuel pump 10 and that Fuel injection valve 12 are a so-called Pump-nozzle unit summarized.
- the High-pressure fuel pump 10 has a pump body 14, in which a pump piston 18 is sealed in a cylinder 16 is guided by a cam 20 of a camshaft Internal combustion engine against the force of a return spring 19 is driven in one stroke.
- the pump piston 18 delimits a pump working space 22 in the cylinder 16 the fuel during the delivery stroke of the pump piston 18 High pressure is compressed.
- the pump workspace 22 will during the suction stroke of the pump piston 18 fuel from one Fuel tank 24 supplied, for example by means of a feed pump.
- the pump work space 22 has a connection to a relief room than the for example the fuel reservoir 24 can serve and controlled by an electrically controlled valve 23 becomes.
- the electrically controlled valve 23 is with a Control device 25 connected.
- the fuel injection valve 12 has a valve body 26 on, which can be formed in several parts, and with the Pump body 14 is connected.
- the valve body 26 In the valve body 26 is in a bore 30, an injection valve member 28 guided longitudinally.
- the bore 30 runs at least approximately parallel to the cylinder 16 of the pump body 14, can also be inclined to this.
- the Valve body 26 faces the combustion chamber of the cylinder at least the end region facing the internal combustion engine one, preferably a plurality of injection openings 32.
- the Injection valve member 28 faces the combustion chamber facing end region, for example an approximately conical one Sealing surface 34, which with a in the valve body 26 in its end area, which faces the combustion chamber, for example also approximately conical valve seat 36 cooperates, from or after which the injection openings 32 lead away.
- valve body 26 In the valve body 26 is between the injection valve member 28 and the bore 30 toward the valve seat 36 toward an annular space 38 available, the one facing away from the valve seat 36 End area through a radial expansion of the bore 30 in a pressure chamber 40 surrounding the injection valve member 28 transforms.
- the injection valve member 28 has the level of Pressure chamber 40 through a reduction in cross-section Valve seat 36 having pressure shoulder 42.
- a preloaded closing spring 44 At the End of the injection valve member 28 facing away from the combustion chamber attacks a preloaded closing spring 44 through which the Injection valve member 28 is pressed toward the valve seat 36.
- the closing spring 44 is arranged in a spring chamber 46, which connects to the bore 30.
- the spring chamber 46 is preferably with a relief space, such as the Fuel reservoir 24 connected.
- the pressure room 40 is through a through the valve body 26 and Pump body 14 extending channel 48 with the Pump work room 22 connected.
- the closing spring 44 is at least supported on the one hand indirectly, for example via a spring plate, on Injection valve member 28 and at least on the other hand indirectly, for example also via a spring plate 51, on a storage piston 50.
- the accumulator piston 50 points at its end region facing the closing spring 44 a shaft portion 52 through a connecting hole 53 in a partition 54 between the spring chamber 46 and one passes through this adjoining storage space 55.
- the connection hole 53 has a smaller diameter than the spring chamber 46 and the storage space 55.
- the storage piston 50 has in the Storage space 55 an area 56 with a larger diameter on than the connecting hole 53 so that a stroke movement of the accumulator piston 50 into the spring chamber 46 thereby it is limited that the area 56 of the accumulator piston 50 is on the partition 54 comes to rest as a stop.
- the Accumulator piston 50 has its area 56 in a bore 57 with respect to the connecting bore 53 accordingly larger diameter tightly guided.
- the spring chamber 46 leads from the storage chamber 55 end facing away from a bore 58 to the pump workspace 22nd through a partition 59.
- the bore 58 has one smaller diameter than the area 56 of the Accumulator piston 50.
- Accumulator piston 50 faces the bore 58 to the area 56 then a sealing surface 60 which is, for example, approximately conical.
- the sealing surface 60 acts with the mouth of the bore 58 in the storage space 55 on the partition 59 together as a seat, which can also be approximately conical.
- the Accumulator piston 50 has a protruding into bore 58 Shank 62, whose diameter is smaller than that of Area 56 is.
- the shaft 62 faces the sealing surface 60 then a much smaller diameter on than bore 58 and towards its free end then a shaft area 64 with a diameter, which is only slightly smaller than the diameter of the hole 58.
- the shaft region 64 can have one or have a plurality of flats 65 through the openings 66 formed between the shaft portion 64 and the bore 58 through which fuel from the pump workspace 22 in can reach the storage space 55.
- the accumulator piston 50 is shown in FIGS First embodiment shown, in which the Accumulator piston 50 in the partition 54 facing Front side of its area 56 has a recess 68.
- the recess 68 has a bottom 69 through which circumferential annular groove 70 may be raised.
- the Shaft part 52 lies in the storage space 55 protruding front end at the bottom 69 of the recess 68 of the Storage piston 50 on.
- the shaft part 52 can also be integrally formed with the accumulator piston 50.
- the System of the shaft part 52 on the accumulator piston 50 is on the one hand by the force acting on the shaft part 52 the closing spring 44 and on the other hand by the in Pump working space 22 prevailing pressure generated force the storage piston 50 ensured.
- By the sublime Formation of the bottom 69 of the recess of the storage piston 50 becomes a defined contact surface for the shaft part 52 ensured.
- the shaft part 52 is subdivided into a shaft section 72 with a larger cross section arranged towards its end projecting into the storage space 55 and a shaft section 74 with a smaller cross section arranged towards the spring chamber 46.
- the shaft section 72 which is larger in cross section, has, for example, an at least approximately circular cross section and is designed in the shape of a circular cylinder.
- the shaft section 74 with a smaller cross section can also have an at least approximately circular cross section but with a smaller diameter than the shaft section 72 and is designed in the form of a circular cylinder.
- the smaller cross section of the shaft section 74 is preferably formed by at least one flat 75 from the shaft section 72. Only one, two, three or more flattenings 75 can be provided distributed over the circumference of the shaft section 74.
- the full diameter of the shaft section 72 is preferably present between the flats 75, so that the shaft section 74 is also guided in the connecting bore 53.
- the shaft part 52 When manufacturing the shaft part 52 with the shaft sections 72, 74, it can be assumed that there is a circular cylindrical shaft part which has the diameter of the shaft section 72 throughout and on which the flats 75 are formed to form the shaft section 74 with a smaller cross section.
- the flats 75 end at the transition to the shaft section 72 on the jacket of the shaft section 72 in control edges 76.
- the Accumulator piston 50 is actuated by the force of closing spring 44 against the pressure prevailing in the pump work chamber 22 in held its initial position when by pressure exerted on the accumulator piston 50 in the pump work chamber 22 Force is less than the force of the closing spring 44.
- the Accumulator piston 50 is in its starting position in FIG shown.
- Throttle point 49 In the connection of the pressure chamber 40 with the Pump work space 22 via channel 48 can be a Throttle point 49 may be provided.
- the throttle point 49 can also omitted, so that the pressure chamber 40 an unthrottled Has connection with the pump workspace 22.
- the Connection of the bore 58 in which the shaft 62 of the Storage piston 50 is arranged with the pump work space 22 also takes place via the throttle point 49. It can also be provided that the pressure chamber 40 an unthrottled Has connection with the pump workspace 22 and the Bore 58 through the throttle point 49 with the Pump work space 22 is connected.
- the function of Fuel injector explained.
- the Pump work room 22 is during the suction stroke of the Pump piston 18 filled with fuel.
- the control valve 23 is initially open, so that no high pressure build up in the pump work space 22 can. If fuel injection is to begin, then the control valve 23 by the control device 25 closed, so that the pump working space 22 from Fuel tank 24 is separated and in this High pressure builds up.
- the pressure in the pump work room 22 and in the pressure chamber 40 is so high that the over Pressure shoulder 42 acting on the injection valve member 28 Force in the opening direction 29 is greater than the force of the Closing spring 44, the injection valve member 28 moves in opening direction 29 and gives the at least one Injection port 32 free through the fuel in the Combustion chamber of the cylinder is injected.
- the Accumulator piston 50 is located in his Starting position. The pressure in the pump work space 22 increases then continue according to the profile of the cam 20 on.
- the fuel injection valve 12 is only for open for a short period of time and it only becomes a small one Amount of fuel pre-injected into the combustion chamber injected.
- the amount of fuel injected is in essentially from the opening pressure of the accumulator piston 50 determined, that is the pressure in the pump work chamber 22 at which the accumulator piston 50 begins its evasive stroke movement.
- the Opening stroke of the injection valve member 28 during the Pre-injection can be done by a damping device be hydraulically limited.
- a damping unit is through DE 39 00 762 A1 and the corresponding US Pat. No. 5,125,580 as well as DE 39 00 763 A1 and corresponding US-5,125,581 known.
- the pressure in the pump work chamber 22 subsequently increases on according to the profile of the cam 20 so that the on the injection valve member 28 acting pressure force in Opening direction 29 increases again and that as a result of increased bias of the closing spring 44 increased Closing force exceeds, so that Fuel injection valve 12 opens again. Doing so larger amount of fuel over a longer period of time injected than during pre-injection. The length of time and the one injected during this main injection Amount of fuel is determined by the time at which the control valve 23 by the control device 25 again is opened. After opening the control valve 23 is the Pump workspace 22 again with the Fuel tank 24 connected so that this is relieved and the fuel injection valve 12 closes.
- the storage piston 50 with the shaft part 52 is through the Force of the closing spring 44 back to its starting position moved back.
- the time offset between the Pre-injection and the main injection is main determined by the evasive stroke of the accumulator piston 50.
- the accumulator piston 150 is according to a second Embodiment shown, in which its training is essentially the same as the first Embodiment, however, the recess 168 in the Accumulator piston 150 designed in such a way that it Accumulator piston narrowed approximately conically.
- a support element 180 is arranged, which is in the Well 168 supports and on which the opposite of the first Embodiment unchanged shaft part 52 for contact comes.
- the support element 180 is preferably in the form of a Ball formed, the diameter d is larger than that smallest diameter of the recess 168.
- the Position of the shaft part 52 to the accumulator piston 50 in the axial Direction is essential for the partial escape stroke h1 Storage piston 50, from which the larger in cross section Shank portion 74 of the shaft part 52 in the Connecting bore 53 dips and thus the Evasion stroke movement is strongly dampened.
- the axial position of the Shaft part 52 relative to the storage piston 50 can pass through Use a ball 180 with a suitable diameter simple way to be set precisely.
- Such balls 180 are available as standardized components with fine stepped diameters. The smaller the diameter of the Ball is 180, the further it dips into the recess 168 and the greater the partial stroke h1 until the Immersed shaft portion 74 in the connecting bore 53.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Claims (8)
- Dispositif d'injection de carburant pour un moteur à combustion interne dans lequel :une pompe à haute pression (10) et un injecteur (12) alimentent en carburant le moteur, la pompe à haute pression (10) présentant un cylindre de pompe (18) entraíné par le moteur et délimitant une chambre de travail de pompe (22), une soupape (23) commandée électriquement commandant une liaison entre la chambre de travail de pompe (22) et un volume de détente (24),l'injecteur de carburant (12) comprend un organe d'injection (28) qui commande au moins un orifice d'injection (32) et peut être déplacé dans le sens d'ouverture (29) par la pression régnant dans une chambre de pression (40) reliée à la chambre de travail de pompe (22), contre la force d'un ressort de fermeture (44) monté dans une chambre de ressort (46),le ressort de fermeture (44) s'appuie d'un côté au moins indirectement sur l'organe d'injection (28) et de l'autre côté au moins indirectement sur un piston d'accumulation coulissant (50 ;150) qui est actionné sur sa face éloignée du ressort de fermeture (44) par la pression régnant dans la chambre de travail de la pompe (22),le piston d'accumulation (50 ; 150) partant d'une position initiale peut se déplacer contre la force du ressort de fermeture (44) dans une chambre d'accumulation (55) et le mouvement de la course de dégagement de ce piston (50 ; 150) dans la chambre (55) est limité par une butée (54),une partie de tige (52) mobile avec le piston d'accumulation (50 ; 150) passe à travers un alésage de liaison (53) entre la chambre d'accumulation (55) et la chambre de ressort (46),lorsque le piston d'accumulation (50 ; 150) se déplace en dégagement, il refoule du carburant provenant de la chambre d'accumulation (55) dans la chambre de ressort (46) à travers une fente (78) existant entre la partie de tige (52) et l'alésage de liaison (53) en produisant ainsi un amortissement du mouvement du piston d'accumulation (50 ; 150),
la partie de tige (52) présente une portion de tige (74), de plus petite section, qui se trouve, lorsque le piston d'accumulation (50 ; 150) occupe sa position initiale, dans l'alésage de liaison (53) et une portion de tige (72), de plus grande section, qui se trouve alors à l'extérieur de l'alésage de liaison (53) dans la chambre d'accumulation (55) et,
quand le piston d'accumulation (50) effectue sa course de dégagement dans la chambre d'accumulation (55), la portion de tige (72) à plus grande section pénètre dans l'alésage de liaison (53). - Dispositif d'injection de carburant selon la revendication 1,
caractérisé en ce que
la partie de tige (52) est réalisée séparée du piston d'accumulation (50 ; 150), et elle est maintenue en appui au moins indirectement sur ce piston d'accumulation (50 ; 150), d'un côté par la force du ressort de fermeture (44) et de l'autre côté par les forces produites par la pression régnant dans la chambre de travail de pompe (22). - Dispositif d'injection de carburant selon la revendication 2,
caractérisé en ce que
la partie de tige (52) est appliquée par un élément de soutien (180) sur le piston d'accumulation (150). - Dispositif d'injection de carburant selon la revendication 3,
caractérisé en ce que
l'élément de soutien (180) a au moins approximativement une forme sphérique et il est logé dans une cavité (168) au moins à peu près de forme conique creusée dans une face frontale du piston d'accumulation (150) située du côté de la partie de tige (52). - Dispositif d'injection de carburant selon une des revendications 1 à 4,
caractérisé en ce que
la portion de tige (72) à plus grande section pénètre dans l'alésage de liaison (53) seulement après que le piston d'accumulation (50 ; 150) ait accompli une course de dégagement partiel (h1). - Dispositif d'injection de carburant selon la revendication 5,
caractérisé en ce que
sur la partie de tige (52) la transition entre la portion de tige (72) à plus grande section et la portion de tige (74) à plus petite section a lieu sur un bord de commande (76) se terminant sur la surface externe de la partie de tige (52). - Dispositif d'injection de carburant selon une des revendications précédentes,
caractérisé en ce que
sur la partie de tige (52), la portion de tige (74) à plus petite section, qui part de la portion de tige (72) à plus grande section, est constituée par au moins un plat (75) réalisé sur la périphérie de la partie de tige (52). - Dispositif d'injection de carburant selon la revendication 7,
caractérisé en ce que
sur la partie de tige (52), la portion de tige (72) à plus grande section a au moins approximativement la forme d'un cylindre circulaire.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10119602 | 2001-04-21 | ||
DE10119602A DE10119602A1 (de) | 2001-04-21 | 2001-04-21 | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
PCT/DE2002/001354 WO2002086307A1 (fr) | 2001-04-21 | 2002-04-11 | Dispositif d'injection de carburant pour moteur a combustion |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1384000A1 EP1384000A1 (fr) | 2004-01-28 |
EP1384000B1 true EP1384000B1 (fr) | 2004-09-22 |
Family
ID=7682228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02737785A Expired - Lifetime EP1384000B1 (fr) | 2001-04-21 | 2002-04-11 | Dispositif d'injection de carburant pour moteur a combustion |
Country Status (7)
Country | Link |
---|---|
US (1) | US6823848B2 (fr) |
EP (1) | EP1384000B1 (fr) |
JP (1) | JP2004519590A (fr) |
DE (2) | DE10119602A1 (fr) |
HU (1) | HU224683B1 (fr) |
PL (1) | PL358379A1 (fr) |
WO (1) | WO2002086307A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10254789A1 (de) * | 2002-11-22 | 2004-06-17 | L'orange Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE102004048322A1 (de) * | 2004-10-05 | 2006-04-06 | Robert Bosch Gmbh | Kraftstoffinjektor |
EP1662133A1 (fr) * | 2004-11-26 | 2006-05-31 | Siemens AG | Injecteur |
DE102005033634A1 (de) * | 2005-07-19 | 2007-01-25 | Robert Bosch Gmbh | Hochdruck-Kraftstoffpumpe für ein Kraftstoff-Einspritzsystem einer Brennkraftmaschine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB634030A (en) * | 1948-03-09 | 1950-03-15 | Cav Ltd | Improvements relating to liquid fuel injection nozzles for internal combustion engines |
DE3041018C2 (de) * | 1980-10-31 | 1986-03-20 | Daimler-Benz Ag, 7000 Stuttgart | Kraftstoffeinspritzeinrichtung für eine luftverdichtende Einspritzbrennkraftmaschine |
DE3521428A1 (de) * | 1985-06-14 | 1986-12-18 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzvorrichtung fuer brennkraftmaschinen |
JP2523759B2 (ja) * | 1987-02-04 | 1996-08-14 | フエスト − アルピネ オウトモチブ ゲゼルシャフト ミットベシュレンクテル ハフツンク | 燃料噴射ノズル |
DE3813320A1 (de) * | 1988-04-08 | 1989-10-19 | Voest Alpine Automotive | Pumpenduese fuer dieselmotoren |
DE19844891A1 (de) * | 1998-09-30 | 2000-04-06 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE10032924A1 (de) * | 2000-07-06 | 2002-01-24 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE20110130U1 (de) * | 2001-06-19 | 2002-10-24 | Robert Bosch Gmbh, 70469 Stuttgart | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
-
2001
- 2001-04-21 DE DE10119602A patent/DE10119602A1/de not_active Withdrawn
-
2002
- 2002-04-11 EP EP02737785A patent/EP1384000B1/fr not_active Expired - Lifetime
- 2002-04-11 DE DE50201121T patent/DE50201121D1/de not_active Expired - Lifetime
- 2002-04-11 WO PCT/DE2002/001354 patent/WO2002086307A1/fr active IP Right Grant
- 2002-04-11 JP JP2002583806A patent/JP2004519590A/ja active Pending
- 2002-04-11 PL PL02358379A patent/PL358379A1/xx unknown
- 2002-04-11 US US10/311,859 patent/US6823848B2/en not_active Expired - Fee Related
- 2002-04-11 HU HU0301345A patent/HU224683B1/hu not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US20040045529A1 (en) | 2004-03-11 |
DE10119602A1 (de) | 2002-10-24 |
HUP0301345A2 (en) | 2003-08-28 |
WO2002086307A1 (fr) | 2002-10-31 |
DE50201121D1 (de) | 2004-10-28 |
HU224683B1 (hu) | 2005-12-28 |
EP1384000A1 (fr) | 2004-01-28 |
PL358379A1 (en) | 2004-08-09 |
JP2004519590A (ja) | 2004-07-02 |
US6823848B2 (en) | 2004-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1458970B1 (fr) | Dispositif d'injection de carburant pour moteurs a combustion interne | |
EP1363015A1 (fr) | Système d'injection de carburant pour un moteur à combustion interne | |
EP1357283A2 (fr) | Dispositif d'injection de carburant pour un moteur à combustion interne | |
EP1402174B1 (fr) | Dispositif d'injection de carburant pour moteur a combustion interne | |
EP1456525B1 (fr) | Dispositif d'injection de carburant pour moteur a combustion interne | |
EP1384000B1 (fr) | Dispositif d'injection de carburant pour moteur a combustion | |
EP1483498A1 (fr) | Dispositif d'injection de carburant pour un moteur a combustion interne | |
DE10207045A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
EP1525390A1 (fr) | Dispositif d'injection de carburant pour moteur a combustion interne | |
EP1310667A2 (fr) | Système d'injection de carburant pour un moteur à combustion | |
EP1383999B1 (fr) | Dispositif d'injection de carburant pour moteur a combustion | |
EP1284360B1 (fr) | Dispositif d'injection de carburant pour moteur à combustion interne | |
DE10359169A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
EP1606511B1 (fr) | Dispositif d'injection de carburant pour moteur a combustion interne | |
DE10146745A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10237585A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
WO2004079181A1 (fr) | Soupape d'injection de carburant pour un moteur a combustion interne | |
DE10146532A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10233101A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10323562A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10329735A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10227011A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
WO2003027481A1 (fr) | Dispositif d'injection de carburant pour un moteur a combustion interne |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20031121 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: VOIGT, PETER Inventor name: DUPLAT, GERARD Inventor name: POURRET, RAPHAEL |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20040922 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50201121 Country of ref document: DE Date of ref document: 20041028 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20050116 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20050623 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20080418 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20080423 Year of fee payment: 7 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090411 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20091231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091222 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090411 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20110628 Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50201121 Country of ref document: DE Effective date: 20121101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121101 |