EP1490591B1 - Einrichtung zur schwingungsdämpfung an kraftstoffeinspritzsystemen mit hochdrucksammelraum - Google Patents
Einrichtung zur schwingungsdämpfung an kraftstoffeinspritzsystemen mit hochdrucksammelraum Download PDFInfo
- Publication number
- EP1490591B1 EP1490591B1 EP02798274A EP02798274A EP1490591B1 EP 1490591 B1 EP1490591 B1 EP 1490591B1 EP 02798274 A EP02798274 A EP 02798274A EP 02798274 A EP02798274 A EP 02798274A EP 1490591 B1 EP1490591 B1 EP 1490591B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- pressure accumulation
- accumulation space
- spring
- spring body
- 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
- 238000013016 damping Methods 0.000 title claims description 34
- 239000000446 fuel Substances 0.000 title claims description 27
- 238000002347 injection Methods 0.000 title claims description 27
- 239000007924 injection Substances 0.000 title claims description 27
- 238000009825 accumulation Methods 0.000 claims description 47
- 210000002105 tongue Anatomy 0.000 claims description 28
- 238000002485 combustion reaction Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- 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
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
-
- 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
Definitions
- a high pressure collection room according to the generic term of Claim 1 is from Drucksckrift EP 0 780 569 A known.
- DE 196 50 865 A1 discloses a solenoid valve for controlling the fuel pressure in Control pressure chamber of an injection valve, for example in the injector of a common rail injection system. About the fuel pressure in the control pressure chamber, the movement of a Controlled valve piston, with an injection opening of the injection valve open and is closed again.
- the solenoid valve has a arranged in a housing part Electromagnet, a moving armature and an armature moved by one Closing spring in the closing direction acted upon control valve member, which with a Valve seat of the solenoid valve interacts and so the fuel drain from the control pressure chamber controls.
- DE 197 08 104 A1 also shows a solenoid valve for controlling the fuel pressure in the control pressure chamber of an injection valve.
- This valve is also used in the injector Common rail injection system used.
- the solenoid valve has one in a housing part arranged electromagnet, a movable armature and one with the armature moved, acted upon by a closing spring in the closing direction control valve member, which cooperates with a valve seat of the solenoid valve and so the fuel drain from the control pressure chamber controls.
- the solenoid valve two-piece anchor with an anchor bolt and one on the anchor bolt slidably mounted anchor plate executed. The two-piece version reduces the effective braked mass and thus the bounce behavior of the anchor.
- the armature plate movable relative to the anchor bolt may be closed after closing the Solenoid valve on the anchor bolt nachschwingen disadvantageously and on this Way to self-adjusting pressure pulsations, i. returning pressure waves at Trigger closing of the injection valve member.
- a vibration damping valve is provided, which is integrated into the interior of the high-pressure collecting space (common rail).
- the solution proposed by the present invention can be applied to today existing interfaces, from their modification at Use the inventively proposed solution is unnecessary.
- the invention proposed vibration damping valve is still pre-assembled and safe in the interior of the high pressure accumulator (common rail) arranged.
- no changes / reworking existing piping systems whether to / from the high-pressure collection room required and it can be used regardless of type according to the modular system.
- Another advantage of the proposed vibration damping valve is located in his compared to the remindströmdrosselelement the cited references significantly lower production costs.
- the closing element of the vibration damping valve acts on the sealing point of the high-pressure accumulation chamber (common rail) to the high pressure line to the injector, thus to the point at the returning pressure waves or Pressure wave reflections that occur when closing an injection valve member such.
- one Nozzle needle occur at the end of the injection process, in the high-pressure accumulation chamber (Common rail) can run back.
- the closing element also formed by an integrally formed spring bar, what the mounting in the axial direction from one end of the high-pressure accumulation chamber in the tubular interior greatly facilitated.
- the spring elements can be bent back or punched out by means of a tool or be bent.
- the one-piece closure / spring elements can be dependent on the axial length of the location and number in particular the distance of the drain holes variant-specific are manufactured at significantly lower manufacturing costs, compared with the remindströmdrosselelementen known in the art.
- Figure 1 is a first embodiment of the invention To take solution in which a closing element is received biased on a retaining bolt is.
- high-pressure accumulator 1 limits a tubular substantially circular shaped cavity through an inner wall 2.
- the one outer wall of the high-pressure accumulator 1 as shown in Figure 1 is denoted by reference numerals 3 marked.
- the transverse axis 4 of the high-pressure collecting chamber extends in a horizontal Direction, the vertical axis 5 of the high-pressure accumulation chamber extends vertically to the transverse axis.
- the longitudinal axis 6 of the high pressure accumulation chamber 1 extends in the plane of the drawing at the intersection of transverse axis 4 and vertical axis 5.
- the wall 7 of the high-pressure collecting chamber is formed in a wall thickness 8, wherein the high-pressure accumulation space 1 is substantially tubular and generally as a forged part is trained.
- the wall thickness 8 is designed accordingly.
- a nozzle 9 is fixed, which has an internally threaded portion 10 includes.
- a screw-11 with a corresponding Screwed male threaded portion on which a not shown in Figure 1 to the corresponding injector of a combustion chamber of an internal combustion engine extending High pressure line is included.
- High pressure line for supplying fuel to the injector of a combustion chamber the internal combustion engine is this from the high-pressure accumulator 1 under very high pressure fuel for injection according to the movement of the Injector valve member of the injector into the combustion chamber of the internal combustion engine fed.
- the screw-in connection 11 acts on a disk-like configured component 12, which comprises a first cone 13 located on a shoulder 17 of a High pressure line connection 15 formed conical seat 18 is supported.
- the screw-in connection 11 is supported on the upper ring-shaped end face of the disc-shaped Component 12 off.
- a vibration damping valve which is a substantially Closing element 19 and a closing element via a shaft 22 acting on Spring body 25 and 32, 40 includes.
- FIG. 1 shows a substantially disc-like configured closing element 19, whose outer contour substantially corresponds to the course of the seat surface of the seat 28, in which a wall 7 of the high-pressure accumulator 1 passes through hole expires.
- the closing element 19 comprises a rod-shaped shaft 22 which abuts his projecting into the interior of the high-pressure accumulator 1 end with an abutment 27 is formed for receiving a spring body 25.
- the closing element 19 via a locking ring 24 with the shaft 22, which serves as a retaining bolt connected.
- At least one formed throttle-like return orifice 20 which is a return flow of fuel in returning to the high-pressure accumulator 1 back pressure waves and thus a Return flow of fuel via the high-pressure line connection 15 via its longitudinal bore 16 allowed in the interior of the high pressure accumulator 1, without this - im essentially caused by the throttling action of the return flow 20 - by high Pressure spikes would be applied.
- the closure member 19 substantially in disc-like design and serving as a retaining pin shaft 22, two separate Are components that have a snap ring or a differently designed fastener 24 are connected to each other captive.
- the at the bottom of the as a retaining bolt serving shank 22 formed abutment 27 supports a turn of a Spring body 25.
- the spring body 25 is supported according to its conical contour 26 with a larger diameter on the inner wall 2 of the high-pressure accumulator 1 from, compared with the diameter at which the spring body 25 on the abutment 27 in the lower region of the serving as a retaining pin shaft 22 is received.
- the conical contour 26 of the Spring body 25 also facilitates the assembly of the spring body 25 through the hole in the wall 7 of the high-pressure accumulator, which is coaxial with the vertical axis 5 of the high-pressure accumulator 1 runs.
- each is a high pressure line connection 15 associated vibration damping valve, essentially a closing body 19, a shaft 22 and a closing element 19 acting on the spring body 25 containing acted upon by a separate spring element 25.
- a corresponding number of vibration damping valves 19, 22, 25 is arranged, all independent of each other by individual spring body 25th with conical contour 26 for ease of assembly in the interior of the high-pressure collecting chamber 1, to be preloaded.
- the closing force of the vibration damping valve according to the embodiment in Figure 1 applying spring element is in the interior of the high-pressure accumulation chamber integrated, eliminating existing interfaces such as the inner diameter of the high-pressure collecting space 1, the sealing point to the high-pressure line connection 15 and the attachment the high-pressure line at the high-pressure line connection 15 is maintained unchanged can be.
- the closing element 19 according to the solution proposed according to the invention the vibration damping valve is directly on the sealing point 23, 28 below of the high-pressure line connection 15.
- the connection of closing element 19 and as Holding bolt serving shank 22 may be both a trained as a Seeger ring Fastener 24 as well as by welding, cabinets, crimping and the like Connection techniques are made.
- FIG. 2 shows a further embodiment of the proposed invention Vibration damping valves with an alternative spring body geometry, wherein the Spring element is integrally formed.
- Vibration damping valves are the closing element 19 and as a retaining bolt Serving shaft 22 integrally formed.
- a thickening 34 is formed, which as Support point for a pair of spring tongues 32, 33 is used.
- the one-piece spring body 30 according to the embodiment of the vibration damping valve in Figure 2 is as configured to the interior of the high-pressure accumulation open U-profile. In manufacturing technology particularly simple way can on the one-piece spring body 30, the spring tongues 32 and 33, which are located on both sides of the inside of the high-pressure collecting space 1 extend extending shaft 22 of the vibration damping valve, be punched out or bent out.
- the spring tongue ends 57 of the first spring tongue 32 and the second spring tongue 33 are based on a broadening of the extension 34 in the lower region of the shaft 22 from.
- the first spring tongue 32 and the second Spring tongue 33 can be used to improve the spring action with an S-shaped profiling 37 are provided.
- the one-piece spring body 30 is a Sealing seat 31 causing, at the upper portion of the inner wall 2 of the high-pressure accumulation chamber 1 employed.
- the integrally formed spring body 30 is therefore relatively movable to the shaft 22 of the vibration damping valve according to that shown in FIG Version stored.
- Reference numeral 36 denotes the break-out points, where the spring tongues 32, 33 in Richtunng on the open side of the U-profile trained one-piece spring body are bent.
- the closing element 19 of the vibration damping valve in the embodiment according to Figure 2 can laterally on the circumference analogous to the formation of the closing element 19 according to the embodiment of the solution according to the invention shown in Figure 1 be provided with a backflow opening 20.
- the embodiment variant shown in FIG. 2 is shown, are therefore seen in the longitudinal direction 6 of the high-pressure accumulation chamber 1 all spring elements connected together.
- the integrally formed spring body 30 is when mounted in the axial direction, i. in the direction of the longitudinal axis 6 in the interior of the High-pressure collecting chamber 1 inserted.
- the one-piece spring body 30 may be in a specific to the length of the high-pressure accumulation chamber 1 tuned axial length are formed whereby type-specific adjust one-piece spring body 30, depending on the number of cylinders through the high-pressure accumulator 1 with fuel to be supplied internal combustion engine and depending on. Distance of the high pressure ports 15 in the longitudinal direction of the High-pressure collecting chamber 1.
- the one-piece spring body 30 For installation in the interior of the high-pressure collecting chamber 1, the one-piece spring body 30 in the longitudinal direction in the interior of the high-pressure collecting space inserted, wherein the spring tongues 32, 33, the S-shaped course 37, can be pushed back by means of an auxiliary tool and at the Shaft 22, spaced at intervals according to the distances of the high pressure line connections 15 protrude into the interior of the high-pressure accumulator 1, be locked.
- the one-piece spring element 30 may, for. B. as a sheet metal profile of a steel with spring properties be made.
- the spring tongues 32, 33 also with a different than an S-shaped Contour 37 be provided to a hiring of the edges, the sealing seat 31 at the Inner wall 2 of the high-pressure accumulation chamber to ensure. It is essential in that the spring tongue ends 57 of the mutually opposite spring tongues 32, 33 at the abutment 34 at the lower end of the shaft 22, the axial bore of the Supported high-pressure collecting space support and thus both the closing element 19th pull in the seat 28 as well as the in this embodiment of the present invention proposed vibration damping valve integrally formed spring body 30 in make its sealing seat 31 in the upper region of the high-pressure collecting space sealing.
- FIG. 3 shows a further embodiment of the proposed invention Vibration damping valve which in the axial direction in the high-pressure accumulation chamber (Common rail) can be mounted.
- proposed vibration damping valve is analogous to the embodiments in Figure 1 and Figure 2 above a hole in the wall 7 of the high-pressure accumulation chamber 1 a closing element 19 from which extends into the interior of the High-pressure accumulator 1 a serving as a retaining pin shaft 22 extends.
- the shaft 22nd enclosed by a guide 43 which partially into the interior of the high-pressure collecting space 1, i. may be formed projecting over the inner wall 2.
- Closing element 19 of the embodiment of the vibration damping valve shown in Figure 3 can on its outer circumference with at least one return flow opening 20, which acts as a throttle.
- the one-piece, ring-shaped Spring body 30 extends annularly along the wall 2 of the high-pressure collecting space 1 and includes the area of each high pressure port 15 over the slotted spring arms seen in the direction of the longitudinal axis 6 of the high-pressure collecting chamber 1 42, whose ends 57 above the abutment 34 at the lower end of the shaft 22nd support.
- the slotted spring arms 42 merge into an annular portion 41, whose lateral surface corresponding to the contour of the inner wall 2 of the high-pressure collecting space 1 is formed.
- the annular, one-piece spring body 40 is überfedemd educated.
- the slotted spring arms 42 in the direction of the two dargestellen in Figure 3 arrows can be bent so that the spring body, i.e. the ends 57 of the slotted spring arms 42 above the abutment 34 at the bottom End of the shaft 22 can engage.
- the guide 43, of which the shaft 22 enclosed is facilitates the assembly wherein the guide 43 as three or more on the shaft 22 offset by 120 ° C to each other or offset by 90 ° to each other depending on the number of guide ribs may be arranged to assemble the annular, one-piece spring body 40 to facilitate.
- Figure 4 shows a perspective view of a one-piece closing element for integration in the substantially formed with tubular cross-section high-pressure accumulation chamber with punched spring tongues.
- the one-piece spring body 30 shown in Figure 4 extends over an axial length 50, which corresponds to the length of the high-pressure accumulator 1, in which the one-piece spring body 30 inserted in the axial direction corresponding to the longitudinal axis 6 we.
- Distances 56 are punched out in the one-piece spring body 30 spring tongues 32 and 33 down. These spring tongues lie with their ends 57 above the abutment 34th (Compare representation according to Figure 3 and thus press the sealing edges 54 to the angled corners of the formed as a U-profile 55 one-piece spring element to the Inner wall 2 of the high-pressure accumulation chamber 1 (see illustration according to FIG. 2).
- the side surfaces of the U-profile 55 procured one-piece spring body 30 are with Numeral 52 and 53 and shorter than the side surface 52 and 53, respectively interconnecting bridge.
- the spring tongues 32 and 33, in the S-shaped contour 37 can run or have another resilient setting enabling contour can support themselves with their spring tongue ends 57 on the abutment 34 and thus form a sealing seat at the top of the high-pressure accumulation chamber 1 each under a High-pressure line connection 15.
- the integrally formed spring body 30 in a type-specific Length 50 are formed, with the distance 56 and the number of Ausstanzstellen 51 for the downwardly extending spring tongues 32 and 33 after the number the vibration damping valves directed, i. according to the number of high pressure line connections 15, in the embodiments of the vibration damping valve shown in Figures 1, 2 and 3 each at the top of the wall 7 of the high-pressure collecting space 1 are formed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Figur 1
- eine erste Ausführungsvariante der erfindungsgemäßen Lösung, bei dem ein Schließelement an einem vorgespannten Haltebolzenfeder beaufschlagt aufgenommen ist,
- Figur 2
- eine weitere Ausführungsvariante der erfindungsgemäß vorgeschlagenen Lösung mit einer alternativen Federgeometrie, wobei Schließelement und dieses beaufschlagende Feder einteilig ausgebildet werden können,
- Figur 3
- eine dritte Ausführungsvariante, welche in axialer Richtung in das Innere des Hochdrucksammelraumes (Common-Rail) montierbar ist und
- Figur 4
- die perspektivische Ansicht eines einteilig ausgebildeten Schließelementes zur Integration in einen rohrförmig konfigurierten Hohlraum des Hochdrucksammelraumes mit am Schließelement ausgestanzten Federzungen.
- 1
- Hochdrucksammelraum
- 2
- Innenwand
- 3
- Aussenwand
- 4
- Querachse
- 5
- Hochachse
- 6
- Längsachse
- 7
- Wand
- 8
- Wandstärke
- 9
- Stutzen
- 10
- Innengewindestutzen
- 11
- Einschraubanschluss
- 12
- Scheibe
- 13
- Erster Konus
- 14
- Zweiter Konus
- 15
- Hochdruckleitungsanschluss
- 16
- Längsbohrung
- 17
- Schulter
- 18
- Kegelsitz
- 19
- Schliesselement
- 20
- Rückströmöffnung
- 21
- Drosselstellezz
- 22
- Schaft
- 23
- Sitz Schliesselement
- 24
- Befestigung
- 25
- Federelement
- 26
- Konische Kontur
- 27
- Widerlager Federelement
- 28
- Sitz
- 30
- Federelement (einteilig)
- 31
- Sitz
- 32
- Erste Federzunge
- 33
- Zweite Federzunge
- 34
- Verdickung Schaft
- 35
- Ausstanzung
- 36
- Ausstanzstelle
- 37
- S-förmige Kontur
- 40
- Überfedernder Federkörper
- 41
- Anlagefläche
- 42
- Geschlitzter Federarm
- 43
- Führungsabschnitt
- 44
- Freiraum für Verformung
- 50
- Längserstreckung einteiliger Federkörper (30)
- 51
- Ausstanzstelle
- 52
- Erste Seitenfläche
- 53
- Zweite Seitenfläche
- 54
- Dichtkante
- 55
- U-Profil
- 56
- Abstand Ausstanzungen
- 57
- Federzungenenden
Claims (15)
- Hochdrucksammelraum (1) für Kraftstoffeinspritzanlagen mit einer der Anzahl der Brennräume einer mit Kraftstoff zu versorgenden Verbrennungskraftmaschine entsprechenden Anzahl von Hochdruckleitungsanschlüssen (15), wobei der Hochdrucksammelraum einen im wesentlichen kreisförmigen Querschnitt aufweist, der von einer Innenwand (2) begrenzt ist, wobei die Hochdruckleitungsanschlüsse (15) eine Längsbohrung (16) umfassen, die von Kraftstoff durchströmt wird und mittels eines Einschraubelementes (11) in einem an der Aussenseite des Hochdrucksammelraumes (1) befestigten Stutzen (9) aufgenommen sind, durch welchen die Hochdruckleitungsanschlüsse (15) in einen Sitz (28) im Hochdrucksammelraum (1) gedrückt werden, dadurch gekennzeichnet, dass in den Hochdrucksammelraum (1) ein ein Schliesselement (19) umfassendes Schwingungsdämpfungsventil aufgenommen ist, welches durch einen Federkörper (25; 30, 32, 33; 40) beaufschlagt ist, welcher sich an einen mit dem Schliesselement (19) verbundenen Schaft (22) und der Innenwand (2) abstützt.
- Hochdrucksammelraum (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass das Schliesselement (19) in einer die Wand (7) des Hochdrucksammelraumes (1) durchsetzenden Bohrung aufgenommen ist, welche in den Sitz (28) zur Aufnahme des Hochdruckleitungsanschlusses (15) ausläuft.
- Hochdrucksammelraum (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass der Sitz (28) zur Aufnahme des Hochdruckleitungsanschlusses (15) als Kegelsitz (23) ausgebildet ist.
- Hochdrucksammelraum (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass das Schliesselement (19) einen stabartig ausgebildeten Schaft (22) umfasst, der sich in den Innenraum des Hochdrucksammelraumes (1) erstreckt und an dem ein Widerlager (27, 34) für einen Federkörper (25; 30, 32, 33; 40) ausgebildet ist.
- Hochdrucksammelraum (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass am Schliesselement (19) mindestens eine ein Rückströmen von Kraftstoff aus dem Hochdruckleitungsanschluss (15) in den Hochdrucksammelraum ermöglichende drosselartig wirkende Rückströmöffnung (20) ausgebildet ist.
- Hochdrucksammelraum (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Aussenkoritur des scheibenförmig ausgebildeten Schliesselementes (19) zum Verlauf der Kontur des Sitzes (28) korrespondiert.
- Hochdrucksammelraum (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die den einzelnen Hochdruckleitungsanschlüssen (15) zugeordneten Schliesselementen (19) des Schwingungsdämpfungsventiles über einzelne Federkörper (25) vorgespannt sind.
- Hochdrucksammelraum (1) gemäß Anspruch 7, dadurch gekennzeichnet, dass die Federkörper (25) eine konische, sich von einem Widerlager (27) aus in Richtung auf die Innenwand (2) erweiternden Durchmesser (26) aufweisen.
- Hochdrucksammelraum (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die den einzelnen Hochdruckleitungsanschlüssen (15) zugeordneten Schliesselemente (19) des Schwingungsdämpfungsventiles gemeinsam von einem einstückigen Federkörper (32, 40) vorgespannt sind.
- Hochdrucksammelraum (1) gemäß Anspruch 9, dadurch gekennzeichnet, dass der einteilige Federkörper (30) als U-Profil (55) ausgeführt ist, aus dessen Flächen Federzungen (32, 33) herausragen, deren Enden (57) sich an einem Widerlager (34) des Schaftes (22) abstützen.
- Hochdrucksammelraum (1) gemäß Anspruch 10, dadurch gekennzeichnet, dass am U-Profil (55) des einteiligen Federkörpers (30) an der Innenwand (2) des Hochdrucksammelraumes (1) liegende Dichtkanten (54) ausgebildet sind.
- Hochdrucksammelraum (1) gemäß Anspruch 10, dadurch gekennzeichnet, dass die Federzungen (32, 33) einander paarweise gegenüberliegen und am einteiligen Federkörper (30) in Abständen (56) voneinander angeordnet sind.
- Hochdrucksammelraum (1) gemäß Anspruch 10, dadurch gekennzeichnet, dass die Länge (50) des einteiligen Federkörpers (30) der Erstreckung des Hochddrucksammelraumes (1) in Längsrichtung (6) entspricht
- Hochdrucksammelraum (1) gemäß Anspruch 9, dadurch gekennzeichnet, dass der einteilige Federkörper (40) als überfedernder Federkörper ausgebildet ist, dessen Aussenkontur (41) der der Innenwand (2) entspricht und geschlitzte Federarme (42) umfasst, deren Enden (57) sich am Widerlager (34) des Schaftes (22) abstützen.
- Hochdrucksammelraum (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass der Schaft (22) des Schliesselementes (19) in einer die Bohrung für den Hochdruckleitungsanschluss (15) durchsetzenden Führungen (43) geführt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10212876 | 2002-03-22 | ||
DE10212876A DE10212876A1 (de) | 2002-03-22 | 2002-03-22 | Einrichtung zur Schwingungsdämpfung an Kraftstoffeinspritzsystemen mit Hochdrucksammelraum |
PCT/DE2002/004567 WO2003081021A1 (de) | 2002-03-22 | 2002-12-13 | Einrichtung zur schwingungsdämpfung an kraftstoffeinspritzsystemen mit hochdrucksammelraum |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1490591A1 EP1490591A1 (de) | 2004-12-29 |
EP1490591B1 true EP1490591B1 (de) | 2005-07-13 |
Family
ID=28050765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02798274A Expired - Lifetime EP1490591B1 (de) | 2002-03-22 | 2002-12-13 | Einrichtung zur schwingungsdämpfung an kraftstoffeinspritzsystemen mit hochdrucksammelraum |
Country Status (5)
Country | Link |
---|---|
US (1) | US7040292B2 (de) |
EP (1) | EP1490591B1 (de) |
JP (1) | JP4177268B2 (de) |
DE (2) | DE10212876A1 (de) |
WO (1) | WO2003081021A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2889729A1 (fr) * | 2005-08-09 | 2007-02-16 | Usui Kokusai Sangyo Kk | Structure de joint d'un connecteur d'embranchement pour rampe commune |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4357362B2 (ja) * | 2004-05-19 | 2009-11-04 | 臼井国際産業株式会社 | コモンレール用分岐接続体の継手構造 |
DE102005026993A1 (de) * | 2005-06-10 | 2006-12-14 | Robert Bosch Gmbh | Hochdruckspeicherraumkörper mit Hochdruckdrosseln |
JP5455013B2 (ja) * | 2009-03-24 | 2014-03-26 | 臼井国際産業株式会社 | 接続頭部を有する高圧燃料噴射管およびその製造方法 |
DE102018204702A1 (de) * | 2018-03-28 | 2019-10-02 | Robert Bosch Gmbh | Brennstoffverteiler für Brennkraftmaschinen |
DE102018207760A1 (de) * | 2018-05-17 | 2019-11-21 | Robert Bosch Gmbh | Brennstoffverteiler für Brennkraftmaschinen |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4336781A (en) * | 1980-04-28 | 1982-06-29 | Stanadyne, Inc. | Fuel injection pump snubber |
DE3341575C2 (de) * | 1983-11-17 | 1996-06-05 | Bosch Gmbh Robert | Druckventil für Kraftstoffeinspritzpumpen |
US4964391A (en) * | 1989-05-30 | 1990-10-23 | Walbro Corporation | Check valve for engine fuel delivery systems |
EP0531533B1 (de) * | 1991-01-14 | 1997-03-19 | Nippondenso Co., Ltd. | Druckakkumulier-kraftstoffeinspritzvorrichtung |
GB9416798D0 (en) * | 1994-08-19 | 1994-10-12 | Lucas Ind Plc | Delivery valve |
EP0780569B1 (de) * | 1995-12-19 | 2002-03-20 | Nippon Soken, Inc. | Speicherkraftstoffeinspritzvorrichtung |
DE19706591A1 (de) * | 1997-02-20 | 1998-08-27 | Bosch Gmbh Robert | Druckventil |
IT1306311B1 (it) * | 1998-07-01 | 2001-06-04 | Magneti Marelli Spa | Sistema di accoppiamento tra testata del motore,iniettore e collettorecarburante . |
JP4093387B2 (ja) * | 1999-08-24 | 2008-06-04 | ヤマハマリン株式会社 | 燃料噴射式エンジン |
US6463909B2 (en) * | 2000-01-25 | 2002-10-15 | Usui Kokusai Sangyo Kaisha Limited | Common rail |
JP4061803B2 (ja) * | 2000-01-26 | 2008-03-19 | 株式会社デンソー | 蓄圧式燃料噴射装置 |
US6830034B2 (en) * | 2000-02-07 | 2004-12-14 | Siemens Automotive Corporation | Fuel injector and fuel rail check valves |
JP2002371941A (ja) * | 2001-06-18 | 2002-12-26 | Denso Corp | 燃料噴射ポンプ |
-
2002
- 2002-03-22 DE DE10212876A patent/DE10212876A1/de not_active Withdrawn
- 2002-12-13 DE DE50203648T patent/DE50203648D1/de not_active Expired - Lifetime
- 2002-12-13 WO PCT/DE2002/004567 patent/WO2003081021A1/de active IP Right Grant
- 2002-12-13 US US10/508,552 patent/US7040292B2/en not_active Expired - Fee Related
- 2002-12-13 JP JP2003578727A patent/JP4177268B2/ja not_active Expired - Fee Related
- 2002-12-13 EP EP02798274A patent/EP1490591B1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2889729A1 (fr) * | 2005-08-09 | 2007-02-16 | Usui Kokusai Sangyo Kk | Structure de joint d'un connecteur d'embranchement pour rampe commune |
Also Published As
Publication number | Publication date |
---|---|
WO2003081021A1 (de) | 2003-10-02 |
DE50203648D1 (de) | 2005-08-18 |
DE10212876A1 (de) | 2003-10-23 |
JP2005520979A (ja) | 2005-07-14 |
JP4177268B2 (ja) | 2008-11-05 |
EP1490591A1 (de) | 2004-12-29 |
US7040292B2 (en) | 2006-05-09 |
US20050178363A1 (en) | 2005-08-18 |
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