WO2010055100A1 - Unité pompe pour une pompe à haute pression - Google Patents

Unité pompe pour une pompe à haute pression Download PDF

Info

Publication number
WO2010055100A1
WO2010055100A1 PCT/EP2009/065062 EP2009065062W WO2010055100A1 WO 2010055100 A1 WO2010055100 A1 WO 2010055100A1 EP 2009065062 W EP2009065062 W EP 2009065062W WO 2010055100 A1 WO2010055100 A1 WO 2010055100A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
valve
pump unit
pump
cylinder
Prior art date
Application number
PCT/EP2009/065062
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 WO2010055100A1 publication Critical patent/WO2010055100A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. 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
    • 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
    • F02M59/46—Valves
    • F02M59/464—Inlet valves of the check valve type
    • 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
    • F02M59/48—Assembling; Disassembling; Replacing
    • F02M59/485—Means for fixing delivery valve casing and barrel to each other or to pump casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0421—Cylinders

Definitions

  • the present invention relates to a pump unit for a high-pressure pump for a fuel injection system of an internal combustion engine, such as for an internal combustion engine of a motor vehicle.
  • a high-pressure pump in question may comprise one or more such pump units and in particular for fuel supply in a high-pressure accumulator injection system, such.
  • Example, in a common rail injection system for diesel fuels, may be provided for the internal combustion engine of a motor vehicle.
  • Such a high pressure pump delivers the fuel from a low pressure area into a high pressure accumulator (often referred to as a "rail"). There, the fuel is permanently available at high pressure for injection into the respective engine cylinders. In a preferred use of such a high-pressure pump, this delivers on the output side a pressure of more than 1000 bar, preferably more than 1500 bar and in particular up to over 2000 bar.
  • Such high-pressure pumps are known in many designs.
  • the high-pressure pumps described herein comprise a plurality of pump units ("pump cylinders") which comprise at least one pump piston axially movably mounted in a cylinder space.
  • Pump cylinders Each cylinder or cylinder chamber is assigned a low-pressure side suction valve and a high-pressure side pressure valve.
  • a disadvantage of the known high-pressure pumps for high-pressure fuel production is a relatively complex attachment of the suction valve and the pressure valve on the cylinder housing or the respective pump units.
  • the sealing contact surfaces must on the one hand have a high quality and on the other hand must not be damaged during assembly. Even with the utmost care, the seal on the contact surfaces is a weak point, which may also be noticeable only after a longer period of operation of the high-pressure pump.
  • a pump unit for a high-pressure pump for producing high-pressure fuel for a fuel injection system of an internal combustion engine, the pump unit comprising:
  • a cylinder housing with a cylinder space in which a pump piston is mounted axially movable
  • At least one suction valve via which the cylinder chamber fuel is supplied from a low pressure region
  • At least one pressure valve through which the compressed Fuel is discharged from the cylinder chamber into a high-pressure region
  • the suction valve and / or the pressure valve is formed largely integrated with or in the cylinder housing, for which purpose at least one valve body of the suction valve and / or the pressure valve is mounted in or on the cylinder housing of the pump unit.
  • the high-pressure pump formed using the pump unit according to the invention can be used in particular for generating high-pressure fuel in a common-rail injection system (eg for diesel fuel).
  • a common-rail injection system eg for diesel fuel
  • At least the suction valve or at least the pressure valve is formed largely integrated with the cylinder housing of the pump unit.
  • This is understood to mean that one or more essential functional parts of these valves or valve units are arranged directly in or on the cylinder housing and are preferably formed integrally with the cylinder housing.
  • at least one functional part of one of the valves is realized by a section of the cylinder housing itself.
  • Such an essential functional part is, for example, a bearing surface for a valve body of these valves.
  • Another advantage of the solution according to the invention is a more compact and, above all, more robust design of the high-pressure pump as a whole. Furthermore, there is also a cost savings.
  • valve body of the suction valve and / or the pressure valve seals against a sealing surface formed in or on the cylinder housing.
  • the sealing surface is an essential functional part of these valves, so that this is a consistent and particularly advantageous development.
  • the sealing surface can be formed directly on or in the cylinder housing, or as a separate component, for example, as a seat ring, formed and arranged directly on or in the cylinder housing.
  • the sealing surface of the suction valve is arranged on the end face of the cylinder chamber.
  • the cylinder chamber is delimited by a lateral surface and by an end face, wherein the end face delimits the cylinder chamber in the axial direction of movement of the pump piston.
  • the suction valve is designed as a poppet valve or seat valve and whose valve body is moved by valve actuation by means of a valve stem directly or indirectly in the cycle.
  • Linder housing stored and / or guided.
  • Storage can be done for example by means of a sliding bush, in particular a sliding sleeve. It is preferably provided that a linear axis of movement of the valve body of the suction valve to the linear axis of movement of the pump piston is parallel or coincides with this.
  • the pressure valve is arranged at the end or at the flow end of a high-pressure channel which extends from the cylinder chamber and extending in a direction transversely and preferably orthogonal to the axis of movement of the pump piston through the cylinder housing.
  • the high-pressure channel has substantially a straight longitudinal extent and preferably a circular cross-sectional area.
  • This cross-sectional area corresponds to the flow cross-section in the high-pressure channel.
  • This cross-sectional area is preferably smaller, in particular significantly smaller, than the piston surface of the pump piston (for example less than 60%, in particular less than 30% of the piston area).
  • the high-pressure channel can be formed for example in the form of a straight bore which extends through the cylinder housing to the cylinder chamber.
  • the volume of the high pressure passage preferably contributes less than 50% to the dead volume of the pump unit.
  • the high-pressure duct near the end face or the end face of the cylinder chamber comes from this. It is preferably provided that in the jacket wall of the cylinder chamber, the inlet opening to the high-pressure channel very close, preferably as close as technically possible, is arranged on the front side of the cylinder chamber, or reaches to this.
  • the length or the longitudinal extension of the high-pressure channel from the cylinder chamber to the pressure valve is less than three times the pump piston diameter, preferably less than twice the pump piston diameter and in particular less than the pump piston diameter. This results in high pressure side advantageously a short flow path for the fuel.
  • the length of the high-pressure channel can be dimensioned, for example, as an axial length of the lateral surface of the cylinder chamber to the sealing surface of the valve body. In particular, if in addition the cross-sectional area of the z. B. cylindrically shaped
  • High-pressure channel is smaller than the pump piston surface (or cross-sectional area of the cylinder space) is provided, it also results in a favorable advantageous low dead volume, which will be explained in more detail below.
  • the pressure valve comprises a spring-loaded valve body and the linear axis of movement of this valve body is parallel to the longitudinal direction of the high-pressure channel or coincides with this.
  • optimum flow conditions for the high-pressure fuel advantageously result, since no substantial deflection of the flow direction takes place via the flow path, in particular also not at the pressure valve.
  • a (favorable) ratio of pump piston stroke volume to dead volume is provided. hen, which is greater than 1, preferably greater than 2 and in particular greater than 3.
  • the pump piston stroke volume corresponds to the displacement of the pump piston as it moves from a bottom dead center to top dead center (or vice versa).
  • the dead volume is the volume remaining in the cylinder space and in adjacent flow areas up to the valves (ie eg in the high pressure passage) when the pump piston is at its upper, i.e. reaches the end face of the cylinder chamber facing dead center.
  • the pressure valve is designed as an insert part and inserted into the cylinder housing from the outside (eg in a lateral indentation of the cylinder housing).
  • the insert is inserted in a stepped bore in the cylinder housing, said stepped bore preferably from outside to inside a threaded portion and a fitting portion and in particular the bore axis coincides with the longitudinal axis of the high pressure passage.
  • the stepped bore and the high-pressure passage can also be produced in a simplified manner.
  • the pressure valve is inserted in the cylinder housing. Screwed neck is held in position, or locked in this position or attached.
  • a high-pressure flow connection to a high-pressure accumulator of the fuel injection system can be produced by means of a flow channel in the stub.
  • a high-pressure accumulator is in particular the rail of a common-rail injection system.
  • the nozzle is screwed with one end in the stepped bore in the cylinder housing.
  • the nozzle has at its two ends in each case a threaded portion for mechanical fastening (on the one hand in the cylinder housing and on the other hand on a high-pressure discharge region).
  • the cylinder housing is integrally formed, which comprises the cylinder chamber and the receptacle of the suction valve and / or the pressure valve.
  • the entire cylinder housing is integrally formed.
  • a high-pressure pump comprises at least two pump units of the type described above, which are each incorporated in a cylinder recess of a (single or multi-part) high-pressure pump housing and for example by means of a likewise arranged in this housing, rotatably mounted drive shaft ( eg camshaft).
  • the pump units can in this case be arranged in a common radial plane (with respect to the drive shaft), or in different such radial planes.
  • FIG. 1 shows a pump unit according to an embodiment of the invention in a perspective view.
  • Fig. 1 shows a generally designated 10 pump unit ("pump cylinder") for use (installation) in a high-pressure pump.
  • pump cylinder for use (installation) in a high-pressure pump.
  • a high-pressure pump for example, for fuel supply in a high-pressure accumulator injection system, such. B. in a common rail injection system for diesel fuels, may be provided.
  • the high-pressure pump in question may comprise a single pump unit 10 or a plurality of such pump units 10 (eg two or three pump units arranged in a common radial plane of a multi-cylinder radial piston pump).
  • the pump unit 10 comprises a housing 11, in which a pump piston 12 is axially movably mounted in a cylinder chamber 13, as explained in more detail below in connection with FIG. 2.
  • the pump piston 12 is driven in pump operation via a plunger 14 arranged on the pump piston foot (in one piece or separately), which in turn can be driven, for example, by means of an "eccentric drive” (not shown).
  • the illustrated pump piston 12 may, for. Example, be actuated by a (not shown) camshaft from which one or more cams (eccentric) the Pumpenkolbenfuß or plunger 14 in Pumphubides (in Fig. 2 upward) load, the provision of the pump piston 12 by a (not shown ) may be accomplished on the plunger 14 acting return spring.
  • the pump unit 10 comprises a nozzle 26, via the output side of which a high-pressure-resistant flow connection to a high-pressure accumulator can be produced.
  • the supply of the pump unit 10 with fuel from a low-pressure range (eg 1-2 bar) or from a backing pump is not shown.
  • a cylinder chamber 13 is formed, in which the pump piston 12 can move axially, ie as shown from top to bottom and vice versa, wherein the pump piston 12 in this case alternately reaches a top dead center and bottom dead center.
  • the pump piston 12 is at bottom dead center.
  • the pump piston 12 is connected to the plunger 14 formed or provided, which in turn is slidably received in a hollow cylindrical guide portion 15 of the cylinder housing 11.
  • the cylinder space 13 is filled with fuel via a suction valve 17 while the pump piston 12 is in the suction stroke, i. moves down as shown.
  • the suction valve 17 is located on the front side of the cylinder chamber 13.
  • the suction valve 17 is designed as a poppet valve or
  • Seat valve formed and includes an axially movable valve body 18 which is formed as a plate tappet with a valve stem 19 and a valve disc 20 arranged thereon.
  • the valve stem 19 of the suction valve 17 is mounted directly in the cylinder housing 11, to which the cylinder housing 11 has a corresponding bore whose lateral surface forms the bearing surface for the valve stem 19.
  • the bore or its lateral surface can be prepared accordingly, and in particular has a suitable surface roughness.
  • a bearing bush in particular a sliding bush, between the valve stem 19 and the bore in the cylinder housing 11.
  • the valve disk 20 of the valve body 18 seals against a sealing surface formed directly in the cylinder housing 11.
  • This sealing surface can, as well as the location surface for the valve stem 19, be prepared, and has z. B. a suitable, ie in particular low surface roughness. Furthermore, this sealing surface can be hardened separately to reduce their susceptibility to wear. Alternatively, the sealing surface can for example also be designed as an annular, separate insert part, which is arranged in the cylinder housing 11. is net.
  • a suction valve is designed as a separate unit. Due to the integrated design of the suction valve 17 shown and described here, however, complex sealing measures and fastening measures for the suction valve are no longer necessary. In addition, the overall result is a compact and robust construction of the pump unit 10.
  • the pump unit 10 further comprises a pressure valve 22, which is designed as an insert part.
  • the pressure valve 22 may be formed in a similar manner to the suction valve 17, as explained above.
  • only the pressure valve 22 may be formed in a similar manner to the above-explained suction valve 17.
  • the high-pressure fuel eg, more than 2000 bar
  • the pressure valve 22 is located at the flow end of a high-pressure channel 23, which in the illustrated embodiment is orthogonal straight from the cylinder chamber 13.
  • the high-pressure passage 23 has a relatively small longitudinal extension in its axial direction, which means the distance between the jacket wall of the cylinder chamber 13 and the pressure valve 22. This results in favorable flow conditions for the fuel under high pressure.
  • the dead volume can be attributed, moreover, the remaining volume in the cylinder chamber 13 when the pump piston 12 is at top dead center.
  • the high pressure passage 23 is in the immediate vicinity of the end face of the cylinder chamber 13 and in the immediate vicinity of the suction valve 17 laterally from the lateral surface of the cylinder chamber 13 from. This may well be the case that the valve disc 20 of the valve body 18 during the opening movement of the suction valve 17, the inlet opening to the high pressure passage 23 at least partially passes over or covered.
  • the pressure valve 22 opens automatically when the pressure in the cylinder chamber 13 due to the lifting movement of the pump piston 13 exceeds a defined pressure level.
  • the pressure valve 22 comprises a movable valve body 24, which is biased by a valve spring 25 and can open the valve by its movement against the spring force.
  • the valve body 24 is arranged such that in the high-pressure passage 23 and in the pressure valve 22 almost optimal flow conditions can be formed for the fuel under high pressure. This is achieved in particular by deflections in the flow path being largely avoided. This also significantly improves the efficiency of the pump unit 10 or the high-pressure pump equipped therewith.
  • the pressure valve 22 is used as a structural unit in a lateral recess of the cylinder housing 11.
  • the cylinder housing 11 has a stepped bore which, from the outside to the inside, has a threaded section and a fitting section. sums, wherein the pressure valve 22 is positioned in the fitting portion of this bore.
  • the bore axis of the stepped bore coincides with the longitudinal axis of the high pressure passage 23.
  • a nozzle or high-pressure pipe 26 is screwed.
  • the nozzle 26 is locked and holds the pressure valve 22 in its position.
  • a high-pressure flow connection to a high-pressure accumulator (rail), not shown, is produced or producible via a flow channel 27 formed in the connecting piece 26.
  • the nozzle 26 also at its axial end remote from the cylinder housing 11 has a threaded portion which can be screwed into a corresponding connection of the high-pressure accumulator or a line connection leading thereto.

Landscapes

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

Abstract

L'invention concerne une unité pompe (10) pour une pompe à haute pression destinée à appliquer une haute pression au carburant dans un système d'injection de carburant d'un moteur à combustion interne, comprenant : un carter cylindrique (11) avec un espace cylindrique (13) dans lequel peut se déplacer axialement un piston de pompe (12), au moins une vanne d'aspiration (17) par l'intermédiaire de laquelle l'espace cylindrique (13) reçoit du carburant provenant d'une zone à basse pression et au moins une vanne de refoulement (22) par l'intermédiaire de laquelle le carburant comprimé est dévié de l'espace cylindrique (13) vers une zone à haute pression. Selon l'invention, afin de réaliser une meilleure intégration d'au moins l'une des vannes (17, 22), la vanne considérée (17, 22) est, dans une large mesure, intégrée au carter cylindrique (11). À cette fin, au moins un corps de vanne (28, 24) de la vanne d'aspiration (17) et/ou de la vanne de refoulement (24) est monté dans le carter cylindrique (11) de l'unité de pompe (10).
PCT/EP2009/065062 2008-11-13 2009-11-12 Unité pompe pour une pompe à haute pression WO2010055100A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810057089 DE102008057089A1 (de) 2008-11-13 2008-11-13 Pumpeneinheit für eine Hochdruckpumpe
DE102008057089.3 2008-11-13

Publications (1)

Publication Number Publication Date
WO2010055100A1 true WO2010055100A1 (fr) 2010-05-20

Family

ID=41571692

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/065062 WO2010055100A1 (fr) 2008-11-13 2009-11-12 Unité pompe pour une pompe à haute pression

Country Status (2)

Country Link
DE (1) DE102008057089A1 (fr)
WO (1) WO2010055100A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015169621A1 (fr) * 2014-05-05 2015-11-12 Robert Bosch Gmbh Pompe haute pression pour l'alimentation d'un carburant dans un moteur à combustion interne
ITUB20159778A1 (it) * 2015-12-30 2017-06-30 Bosch Gmbh Robert Pompa per alimentare carburante ad alta pressione ad un motore a combustione interna

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039210A1 (de) 2010-08-11 2012-02-16 Robert Bosch Gmbh Gebautes Saugventil
DE102011002684A1 (de) 2011-01-14 2012-07-19 Robert Bosch Gmbh Hochdruckpumpe
DE102011077175A1 (de) 2011-06-08 2012-12-13 Robert Bosch Gmbh Ventilanordnung mit einem Ventilkörper
DE102011082594A1 (de) 2011-09-13 2013-03-14 Robert Bosch Gmbh Ventilanordnung für eine Pumpe einer Kraftstoffeinspritzvorrichtung
DE102013216978A1 (de) 2013-08-27 2015-03-05 Robert Bosch Gmbh Hochdruckpumpe für ein Kraftstoffeinspritzsystem sowie Verfahren zur Herstellung einer Hochdruckpumpe für ein Kraftstoffeinspritzsystem
ITUA20161816A1 (it) * 2016-03-18 2017-09-18 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
DE102016219025A1 (de) 2016-09-30 2018-04-05 Robert Bosch Gmbh Kraftstoffhochdruckpumpe, Verfahren zum Betreiben einer Kraftstoffhochdruckpumpe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230613A (en) * 1990-07-16 1993-07-27 Diesel Technology Company Common rail fuel injection system
WO2004027263A1 (fr) * 2002-09-17 2004-04-01 Siemens Aktiengesellschaft Unite de pompe a pistons radiaux
DE102005024042A1 (de) * 2005-05-25 2006-11-30 Robert Bosch Gmbh Auslassstutzen für eine Hochdruckpumpe
US20070215113A1 (en) * 2004-03-18 2007-09-20 Andreas Dutt High-Pressure Pump for a Fuel Injection System of an Internal Combustion Engine
US20080152491A1 (en) * 2006-12-26 2008-06-26 Davies Lucy V Coatings for use in fuel system components

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19814506A1 (de) 1998-04-01 1999-10-14 Bosch Gmbh Robert Radialkolbenpumpe zur Kraftstoffhochdruckversorgung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230613A (en) * 1990-07-16 1993-07-27 Diesel Technology Company Common rail fuel injection system
WO2004027263A1 (fr) * 2002-09-17 2004-04-01 Siemens Aktiengesellschaft Unite de pompe a pistons radiaux
US20070215113A1 (en) * 2004-03-18 2007-09-20 Andreas Dutt High-Pressure Pump for a Fuel Injection System of an Internal Combustion Engine
DE102005024042A1 (de) * 2005-05-25 2006-11-30 Robert Bosch Gmbh Auslassstutzen für eine Hochdruckpumpe
US20080152491A1 (en) * 2006-12-26 2008-06-26 Davies Lucy V Coatings for use in fuel system components

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015169621A1 (fr) * 2014-05-05 2015-11-12 Robert Bosch Gmbh Pompe haute pression pour l'alimentation d'un carburant dans un moteur à combustion interne
ITUB20159778A1 (it) * 2015-12-30 2017-06-30 Bosch Gmbh Robert Pompa per alimentare carburante ad alta pressione ad un motore a combustione interna

Also Published As

Publication number Publication date
DE102008057089A1 (de) 2010-05-20

Similar Documents

Publication Publication Date Title
WO2010055100A1 (fr) Unité pompe pour une pompe à haute pression
AT511803B1 (de) Pleuelstange für eine hubkolbenmaschine
DE102008045730B4 (de) Rücklauffreie Kraftstoffpumpeneinheit sowie damit ausgerüstetes Fahrzeug
EP1121531B1 (fr) Pompe a piston radial pour la production de haute pression de carburant
EP2585707A1 (fr) Pompe, en particulier pompe à carburant haute pression
DE102004013244A1 (de) Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE10355027A1 (de) Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
WO2008138800A1 (fr) Injecteur à actionneur piézoélectrique
WO2006037671A1 (fr) Pompe a piston radial
EP1714030B1 (fr) Pompe haute pression, notamment pour systeme d'injection de carburant de moteur a combustion interne
DE602004011229T2 (de) Common-rail-kraftstoffpumpe
EP1561028B1 (fr) Pompe haute pression d'alimentation en carburant comprenant un clapet a bille dans l'admission basse pression
DE60301312T2 (de) Treibstoffpumpenanordnung
DE102011089857A1 (de) Pumpe, insbesondere Kraftstoffhochdruckpumpe für eine Kraftstoffeinspritzeinrichtung
DE102006017037B4 (de) Radialkolbenpumpe zur Kraftstoffhochdruckversorgung bei einer Brennkraftmaschine
EP2825773A1 (fr) Pompe enfichable
EP2519743A1 (fr) Pompe à piston dotée d'une soupape d'admission
EP2449261A1 (fr) Pompe haute pression
DE102006038839A1 (de) Hochdruckpumpe für ein Kraftstoffsystem einer Brennkraftmaschine
EP1413756B1 (fr) Pompe à combustible
DE10302043A1 (de) Kraftstoffhochdruckpumpe mit Kugelventil im Niederdruck-Einlass
WO2019149472A1 (fr) Dispositif d'alimentation en carburant pour carburants cryogéniques
DE19721241C1 (de) Pumpedüse
DE10355028A1 (de) Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE10352769A1 (de) Kraftstoffhochdruckpumpe für eine Brennkraftmaschine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09751908

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09751908

Country of ref document: EP

Kind code of ref document: A1