WO2016058884A1 - Pompe à carburant - Google Patents

Pompe à carburant Download PDF

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Publication number
WO2016058884A1
WO2016058884A1 PCT/EP2015/073128 EP2015073128W WO2016058884A1 WO 2016058884 A1 WO2016058884 A1 WO 2016058884A1 EP 2015073128 W EP2015073128 W EP 2015073128W WO 2016058884 A1 WO2016058884 A1 WO 2016058884A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
fuel
fuel pump
pressure
housing
Prior art date
Application number
PCT/EP2015/073128
Other languages
German (de)
English (en)
Inventor
Uwe Nigrin
Ngoc-Tam Vu
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2016058884A1 publication Critical patent/WO2016058884A1/fr

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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
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8053—Fuel injection apparatus manufacture, repair or assembly involving mechanical deformation of the apparatus or parts thereof
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/445—Selection of particular materials

Definitions

  • the invention relates to a fuel pump, preferably for a fuel injection system of an internal combustion engine, wherein the fuel pump comprises at least: a housing, a fuel intake chamber, a pressure relief valve, a valve inlet, a valve seat, a closing body, a valve pressure spring, a spring support and a valve outlet wherein the valve pressure spring is arranged with pressure bias between the spring support and the closing body, so that it presses the closing body in the direction of the valve seat.
  • the fuel is bar in the suction space, ie on the low pressure side at an be ⁇ excluded pressure of eg. 4 to 6, while the pressure generated for an injection system on the pressure side of the fuel pump in operation depending on the requirements of several hundred can be bar or more.
  • a limited pressure of, for example, 4 to 6 bar in the suction chamber it is known in the prior art that a fed from the suction, the pressure generating for the injection pump with a so-called.
  • the invention has the object, advantageously further develop a fuel pump of the type mentioned, so that in particular one or more of the aforementioned limitations can be avoided.
  • the object is achieved by the invention initially and essentially in conjunction with the features that the suction is fluidly connected to the valve inlet, that the valve outlet is fluidly connected to a return port and that the spring support and the return port formed on a one-piece component are.
  • the spring support and the return port are formed integrally with each other, a compact and cost-effective construction he ⁇ reaches. Assembly is also simplified by allowing the return port and spring support to be mounted while adjusting the valve opening pressure.
  • the spring support comprises at least one means which is adapted to a support of a longitudinal end of the valve pressure spring in the spring longitudinal direction, ie in the axial direction. Combined or alternatively, there is the possibility that the spring support comprises at least one means which is connected to a radial one or lateral support of a longitudinal end of the valve pressure spring is adjusted.
  • the fuel pump is designed so that the fuel is supplied from the outside, preferably by means of a so-called. Tank pump, with an inlet pressure generated by the tank pump in the suction chamber. There is the possibility that a tank pump is used, which is structurally and drivingly decoupled from the fuel pump, so for example.
  • the fuel pump for use with a gasoline engine may be configured to compress the fuel to a pressure of, for example, up to 250 bar.
  • the fuel pump may be configured to compress the fuel to a pressure of, for example, up to 2000 bar. It is understood that these numerical values are only exemplary. For example, it can lenpumpe to a radial piston pump or a viagelzel- or be another common fuel pump pump at the power ⁇ material pump.
  • the inlet connection is connected as an external connection of the fuel pump with the suction chamber, so that there is the same or approximately the same pressure in the inlet connection and in the suction chamber.
  • the fuel is supplied to the intake space by means of a tank pump.
  • a tank pump This ⁇ be indicated that the injection pressure generating fuel pump requires no structurally and respect.
  • the drive integrated supply pump which allows by comparison, simpler and space-saving design.
  • This can itself, for example, be in a fuel tank or, for example. be fluidly connected to a fuel tank by means of a conduit.
  • the invention also makes it advantageous that, when it comes to pressure fluctuations in the intake chamber of the fuel pump during operation, the pressure in the suction chamber does not exceed a presettable maximum pressure (pressure limit).
  • the spring urging force of the valve spring is set so that the pressure relief valve opens when the fuel pressure in the suction space and the valve inlet pressure limit below about ⁇ .
  • the valve inlet is a space or area of a passage for fuel, which is adjacent to the closing body on the side facing away from the valve pressure spring. If the pressure limiting valve is closed, there is no fluidic connection between the valve inlet and the valve outlet, but such a fluidic connection exists determin ⁇ mentally only when the pressure relief valve is open. Instead of valve inlet could also speak of Ventilein ⁇ let area or valve inlet space.
  • a fuel return line connected to the fuel tank may be connected to the return port of the fuel pump.
  • the current flowing in the occurrence of pressure peaks in the suction chamber through the pressure relief valve force ⁇ material can be returned to the fuel tank.
  • the pressure limiting valve remains closed due to the set bias of the valve pressure spring by the valve pressure spring sealingly presses the closing body against the valve seat, so that no fluidic connection between the input side Valve inlet or valve port and the valve outlet be ⁇ stands.
  • the fuel pump in the housing on a fluidly connected to the suction chamber return for fuel, which leads to the valve inlet.
  • a housing bore is formed, which is fluidly connected to the return by means of a bottom of the housing bore outgoing, compared to the housing bore in diameter reduced passage.
  • the spring support has at least one, preferably transverse to the valve longitudinal axis (that is, for example, perpendicular or inclined) oriented support surface for the axial support of the valve pressure spring.
  • the return port is sleeve-shaped (in particular as a so-called. Grommet) is formed.
  • a shaft portion may be between the spring support and the return port may preferably be formed, which is inserted into the housing bore, so that the support surface is zu flod arranged the valve inlet in the housing bore and the rear ⁇ flow connection wholly or partially outside of the housing at ⁇ is ordered.
  • the housing means may be present for forming a positive stop, by means of which in the assembly of the one-piece component whose insertion depth into the
  • Housing bore is limited. As a result, a simple and reliably reproducible adjustment of the opening pressure of the pressure relief valve is made possible in the course of a simple assembly of the one-piece component.
  • a press fit may be selected, by means of which the one-piece component is held even when acting on the closing body pressures of more than, for example, 6 bar or more than, for example. 10 bar in the housing bore. It is preferably thought that the preload of the
  • Valve pressure spring is selected so that the pressure relief valve opens when the pressure in the suction chamber exceeds a pressure limit, which is, for example, 4 bar or 5 bar or 6 bar or in the value range between 4 and 6 bar.
  • a pressure limit which is, for example, 4 bar or 5 bar or 6 bar or in the value range between 4 and 6 bar.
  • the spring tension can be chosen so that, if no
  • the housing of the fuel pump is made of aluminum or aluminum alloy. This allows a low weight of the fuel pump.
  • the fuel pressure in the suction chamber in particular depending on the operation of a pump supplying the fuel (for example tank pump), can fluctuate at a high frequency (for example 1600 Hz).
  • a heating of the pressure relief valve to, for example, about 100 ° C.
  • the valve seat is formed on a valve seat element, which has a passage opening, inserted in the housing bore and preferably in its adjacent passage. This advantageously makes it possible to produce the valve seat from a different material than the housing. Preferably, it may be a stamped part.
  • valve seat member may, for example, be made of steel, that is to say of a material which is susceptible to wear in comparison to aluminum; For example, offers a production of sheet steel. It is considered to be expedient that the valve seat element has a rotationally symmetrical insertion section for insertion into the passage and a flange section extending from there in diameter. It is preferred that the outer diameter of the male portion is adapted to the inner diameter of the passage adjacent to the housing bore to form a transition fit or interference fit.
  • the valve seat element may have a guide portion extending from the outer edge of the flange portion in the direction away from the Einsteckab ⁇ cut direction.
  • a guide portion may comprise a plurality of circumferentially spaced and spaced apart wall projections, which surround the closing body and adjacent turns of the valve pressure spring from the outside to guide, preferably leaving an annular gap.
  • the valve seat member comprises a
  • the Body This can be made of steel, for example. From so-called. Bright steel exist.
  • the basic body of the valve seat element is coated at least on the Au ⁇ dseite its insertion section and at the male ⁇ section facing surface of the flange with a sealing material.
  • the sealing material can be vulcanized onto the valve seat element.
  • the Dichtma ⁇ TERIAL it may preferably be rubber, for example.
  • NBR Nit ril-butadiene rubber
  • a sealing element for example an O-ring, is inserted between the insertion section and the wall of the passage. seal is used. Nevertheless, it is alternatively also within the scope of the invention to form the valve seat directly on the housing, ie to dispense with a separate valve seat element.
  • the invention also relates to an arrangement, preferably a fuel injection system of an internal combustion engine, which comprises a fuel pump.
  • a fuel pump which has one or more of the features described above, that the suction of the fuel pump is fluidly connected by a tank pump with a fuel tank and that the return port is fluidly connected to the fuel tank by means of a fuel return line connected thereto.
  • FIG. 1 shows a fuel pump according to the invention according to a preferred embodiment in a through her
  • FIG. 2 shows an enlarged detail of detail II from FIG. 1;
  • FIG. 3 shows a sectional view through the Ven ⁇ tilsitzelement shown in Fig. 2 with schematically indicated coating and
  • Fig. 4 shows an alternative embodiment of a valve ⁇ seat element, in an enlarged compared to the other figures representation.
  • FIG. 1 shows a sectional view of a fuel pump 1 according to the invention for a fuel injection system of an internal combustion engine.
  • the cutting plane is chosen so that it leads through a pressure limiting valve designated by the reference numeral 2.
  • the sectional plane leads transverse to an actuator shaft 3 of the fuel pump 1 by the housing 4.
  • the fuel pump 1 may preferably be a Ra ⁇ dialkolbenpumpe or a vane pump or an other usual for fuel pumps pump type.
  • the pumping device which effects the actual pumping process and is driven by the drive shaft 3 lies outside the sectional plane of FIG. 1 and is therefore not shown there.
  • the fuel pump 1 has an inlet port 5 for connection to a fuel supply line (not shown).
  • the sleeve-like or designed as a so-called spout inlet port 5 is fluidly connected to a formed inside the fuel pump 1 suction chamber 6 for fuel, from which the fuel is sucked by the pump to guide him with increased pressure in a pressure chamber, from where from it can be supplied through a pump outlet of an internal combustion engine, for example a gasoline engine or a diesel engine.
  • the pressure limiting valve 2 comprises a valve inlet 7 (cf. also FIG. 2), a valve seat 8, a closing body 9, a valve compression spring 10, a spring support 11 and a valve outlet 12.
  • the valve compression spring 10 is in a prestressed state between the spring support 11 and the closing body 9 clamped so that it presses the closing body 9 in the direction of the valve seat 8 back.
  • Figures 1 and 2 show the pressure relief valve 2 in its closed position, wherein the valve pressure spring 10th the closing body 9 presses sealingly against the valve seat 8, whereby the valve inlet 7 is closed.
  • the fuel pump 1 comprises, in the housing 4, a return flow 13 fluidly connected to the suction space 6 (a cavity which in the example includes the cut bore) for fuel leading to or fluidly connected to the valve inlet 7. In the viewing direction of FIGS. 1 and 2, the view through the bore of the return line 13 falls into the suction space 6 connected to it.
  • the valve outlet 12 is fluidically connected to a return connection 14.
  • the return port 14 is formed with the spring support 11 together on a one-piece component 15, so together in one piece. Due to the one-piece design of spring support 11 and return connection 14, the component 15 fulfills a plurality of functions, so that a simple and space-saving design and a simple assembly are made possible.
  • a housing bore 16 is formed in the housing 4. It has a uniform diameter except for a chamfer adjacent to the bore bottom 17. To a central opening in the bore bottom 17 includes a reduced compared to the housing bore 16 in diameter passage 30 at. By means of this, the housing bore 16 is fluidically connected to the return line 13.
  • the component 15 is designed to be rotationally symmetrical, with the exception of a through bore 18 passing through its wall; the one in one Cross-section lying in the middle longitudinal section is hatched in FIG. 1 and with a view to the crosswise oriented one
  • a first longitudinal end 19 of the component 15 is designed as a cylindrical section 21. Its outer diameter is only slightly smaller than the inner diameter of the valve pressure spring 10, which is a cylinder compression spring.
  • the length of the first cylindrical portion 21 is selected so that the valve pressure spring 10 with some spring coils for guiding can postpone until it occurs at its spring longitudinal end in spring longitudinal direction or axially positive fit against a support surface 20 formed on the component 15. This is located at a stepped cross-sectional transition, at which the first cylindrical section 21 merges into a second, larger diameter cylindrical section 22. This is followed by a further increase in diameter a cylindrical shaft portion 23 whose outer diameter corresponds to the (except for the chamfer) uniform diameter of the housing bore 16. As is shown by way of example in FIG.
  • annular groove may, for example, be embedded in the shaft section 23 in order to receive therein a sealing element (for example an O-ring).
  • the shaft portion 23 is followed by an annular projection 24 whose diameter is greater than the (except for the chamfer) uniform diameter of
  • Housing bore 16 is. This is followed, reduced in diameter, the return port 14 at. Its central
  • Through hole 25 extends into the second cylindrical portion 22 and is fluidly connected to the transverse bore 18 extending transversely thereto.
  • the common length of the first cylindrical portion 21, the second cylindrical portion 22 and the shaft portion 23 is smaller than the depth of the housing bore 16.
  • the first longitudinal end of the valve ⁇ compression spring 10 is supported on the spring support 11 in the longitudinal direction (ie axially) against the support surface 20 and in the radial direction against the first cylindrical portion 21.
  • the spring support 11 thus comprises means for axial support and Means for radial support of the valve compression spring 10 and thus causes in addition to an axial support and a radial support and centering of one longitudinal end of the valve compression spring 10.
  • the other longitudinal end of the valve compression spring 10 is axially against the side facing away from the valve seat 8, in the example of the geometric valve longitudinal axis 26 perpendicular oriented surface 27 of the closing body 9 from.
  • the annular surface 27 encloses a cross-sectional area in which the closing body 9, in the example in one piece, merges into a rotationally symmetrical guide projection 28.
  • Its outer diameter corresponds to the inner diameter of the valve compression spring 10 or is slightly smaller in comparison, so that the guide projection 28 is surrounded by a few turns of the valve compression spring 10 to form a radial centering or lateral support.
  • the outer diameter of the closing body 9 and the outer diameter of the valve pressure spring 10 is smaller than the inner diameter of the housing bore 16. Nevertheless, the closing body 9 is held by means of the guide projection 28, the Ven ⁇ tildruckfeder 10 and the first cylindrical portion 21 concentric with the geometric valve longitudinal axis 26.
  • valve cavity 29 (valve chamber) which is fluidically connected to the oriented perpendicular to the valve longitudinal axis 26 through bore 18 in.
  • the housing 4 of the fuel pump 1 is made of aluminum alloy.
  • the valve seat 8 in the example is formed on a valve seat element 31 which is inserted in the housing bore 16 and in its passage 30 and has a central passage opening 37.
  • valve seat member 31 In the embodiment of Figures 1 to 3 is an inexpensively producible by punching and bending deformation valve seat member 31. This has a rotationally symmetrical plug-in portion 32 and a diameter extending from this starting
  • the valve seat member 31 includes a
  • Base 34 in the example of steel. As Figure 3 schematically indicates by dashed lines, is the
  • the sealing material 35 causes at the circumferential bulge 36 and at the axial support of the flange portion 33 a seal against undesirable passage of fuel.
  • the passage ⁇ opening 37 of the valve seat member 31 opens into the return line 13.
  • a sealing element for example.
  • the return port 14 is sleeve-shaped (as so-called. Grommet) formed.
  • the the return port 14 comprising a one-piece component 15 is inserted in such a way in the housing bore 16, a ⁇ that the support surface 20 is located the valve inlet 7 zu obsd in the housing bore 16 and the return port 14 is located completely outside of the housing. 4
  • the outer diameter of the shaft portion 23 is matched to the inner diameter of the housing bore 16 so that a press fit is formed.
  • Figure 4 shows in perspective a second preferred embodiment of a valve seat member 31.
  • This includes in addition to a rotationally symmetrical plug-in section 32 and a therefrom starting at the diameter-expanding flange portion 33 also has a guide portion 39 extending from the flange portion 33 in the of the plug-in section A ⁇ 32 extends away.
  • the guide portion 39 includes three wall projections 40 having a ring-segment-shaped cross section and extending circumferentially from the outer edge of the flange portion 33 and from each other.
  • the wall projections 40 can be used to additionally guide the
  • Closing body 9 and possibly the valve pressure spring 10 are used.
  • the length of the valve compression spring 10 is matched to the depth of the housing bore 16 and to the dimensions of the component, that they also with closed Druckbegren- Shut-off valve, when the closing body 9 sealingly abuts against the valve seat 8, with pressure bias between the closing ⁇ body 9 and the spring support 11 is clamped.
  • the spring ⁇ voltage is selected so that the pressure relief valve 2 opens when the pressure of the fuel in the suction chamber 6 exceeds a certain limit.
  • This preselectable limit value of the pressure can, depending on the requirements, for example, be 4 bar or 5 bar or 6 bar or, for example, be in a pressure interval between 4 and 6 bar.
  • the pressure relief valve 2 opens when the pressure of the fuel in the suction space 6 exceeds the preset limit value. Fluctuations in the fuel pressure in the suction chamber 6 may be due to the fact that the
  • Fuel pump 1 is fed through the inlet port 5 fuel with fluctuating pressure.
  • pressure relief valve 2 when exceeding the preset
  • Pressure limit opens, fuel is discharged from the suction chamber 6 through the pressure relief valve 2 and the return port 14 for a short time, whereby unwanted pressure peaks are avoided.
  • Fuel pump 1 may be part of an arrangement, preferably a fuel injection system of a combustion ⁇ engine, wherein the inlet port 5 is fluidly connected by a fuel supply line with a tank pump, which in turn fluidly connected to a fuel tank (or arranged in the plastic tank) and the fuel pump 1 supplies fuel at a delivery pressure during operation which should not exceed a certain limit value.
  • the return port 14 is preferably fluidly connected to the by means of a fuel return line connected thereto Fuel tank connected. If it comes to undesirable fluctuations in the delivery pressure during operation and the fuel pressure in the suction chamber 6 exceeds the limit, the pressure relief valve 2 opens briefly until the undesirable pressure increase is reduced by the return flow of fuel from the return port 14 to the fuel tank.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne une pompe à carburant (1), destinée en particulier à un système d'injection de carburant d'un moteur à combustion interne ; la pompe à carburant (1) comprend au moins : un boîtier (4), une chambre d'aspiration (6) destinée au carburant, une soupape de limitation de pression (2) qui comporte une entrée (7), un siège (8), un élément de fermeture (9), un ressort de pression (10), un support de ressort (11) et une sortie (12) ; le ressort de pression (10) est disposé entre le support de ressort (11) et l'élément de fermeture (9) avec une précontrainte de compression, de façon à presser l'élément de fermeture (9) en direction du siège (8). Selon un perfectionnement avantageux, la chambre d'aspiration (6) est reliée de manière fluidique à l'entrée (7), la sortie (12) est reliée de manière fluidique à un raccord de retour (14) et le support de ressort (11) et le raccord de retour (14) sont formés au niveau d'un composant monobloc (15).
PCT/EP2015/073128 2014-10-15 2015-10-07 Pompe à carburant WO2016058884A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014220856.4 2014-10-15
DE102014220856.4A DE102014220856A1 (de) 2014-10-15 2014-10-15 Kraftstoffpumpe

Publications (1)

Publication Number Publication Date
WO2016058884A1 true WO2016058884A1 (fr) 2016-04-21

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ID=54364258

Family Applications (1)

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PCT/EP2015/073128 WO2016058884A1 (fr) 2014-10-15 2015-10-07 Pompe à carburant

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DE (1) DE102014220856A1 (fr)
WO (1) WO2016058884A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29518733U1 (de) * 1995-11-25 1997-03-20 Voss Armaturen Druckhalteventil für Kraftstoffanlagen
DE10022275A1 (de) * 1999-05-07 2000-12-28 Aisan Ind Überdruckventil und Kraftstoffzufuhrsystem mit einem solchen Überdruckventil
DE102008051192A1 (de) * 2008-10-14 2010-04-15 Continental Automotive Gmbh Anordnung aus einem Zylinderkopf und einer Radialkolbenpumpe
US20110204268A1 (en) * 2010-02-24 2011-08-25 Continental Automotive Systems Us, Inc. Unbalanced Inlet Fuel Tube For A Fuel Pressure Regulator
WO2012136429A1 (fr) * 2011-04-08 2012-10-11 Robert Bosch Gmbh Unité de pompe pour amener un carburant, de préférence un carburant diesel, d'un réservoir à un moteur à combustion interne
DE102013200050A1 (de) * 2013-01-03 2014-07-03 Robert Bosch Gmbh Überströmventil für eine Kraftstoffpumpe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665943A (en) * 1986-02-14 1987-05-19 Swagelok Company Poppet valve
DE10259525A1 (de) * 2002-12-19 2004-07-01 Robert Bosch Gmbh Förderaggregat
DE102011089797A1 (de) * 2011-12-23 2013-06-27 Robert Bosch Gmbh Überströmventil für ein Kraftstoffeinspritzsystem sowie Kraftstoffeinspritzsystem
DE102013210760A1 (de) * 2013-06-10 2014-12-11 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe für ein Kraftstoffsystem für eine Brennkraftmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29518733U1 (de) * 1995-11-25 1997-03-20 Voss Armaturen Druckhalteventil für Kraftstoffanlagen
DE10022275A1 (de) * 1999-05-07 2000-12-28 Aisan Ind Überdruckventil und Kraftstoffzufuhrsystem mit einem solchen Überdruckventil
DE102008051192A1 (de) * 2008-10-14 2010-04-15 Continental Automotive Gmbh Anordnung aus einem Zylinderkopf und einer Radialkolbenpumpe
US20110204268A1 (en) * 2010-02-24 2011-08-25 Continental Automotive Systems Us, Inc. Unbalanced Inlet Fuel Tube For A Fuel Pressure Regulator
WO2012136429A1 (fr) * 2011-04-08 2012-10-11 Robert Bosch Gmbh Unité de pompe pour amener un carburant, de préférence un carburant diesel, d'un réservoir à un moteur à combustion interne
DE102013200050A1 (de) * 2013-01-03 2014-07-03 Robert Bosch Gmbh Überströmventil für eine Kraftstoffpumpe

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Publication number Publication date
DE102014220856A1 (de) 2016-04-21

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