EP1058783B1 - Radialkolbenpumpe zur kraftstoffhochdruckversorgung - Google Patents
Radialkolbenpumpe zur kraftstoffhochdruckversorgung Download PDFInfo
- Publication number
- EP1058783B1 EP1058783B1 EP98952547A EP98952547A EP1058783B1 EP 1058783 B1 EP1058783 B1 EP 1058783B1 EP 98952547 A EP98952547 A EP 98952547A EP 98952547 A EP98952547 A EP 98952547A EP 1058783 B1 EP1058783 B1 EP 1058783B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston pump
- radial piston
- pump according
- bowl
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F04B1/0448—Sealing means, e.g. for shafts or housings
-
- 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
- F02M59/462—Delivery valves
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
- F04B53/1007—Ball valves having means for guiding the closure member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7904—Reciprocating valves
- Y10T137/7922—Spring biased
- Y10T137/7927—Ball valves
- Y10T137/7928—With follower
Definitions
- the invention relates to a radial piston pump for High-pressure fuel supply in fuel injection systems of internal combustion engines, especially in a common rail injection system, with one stored in a pump housing Drive shaft which is eccentric or in Has circumferential direction cam-like elevations, and with preferably several radially in relation to the drive shaft a respective cylinder space arranged pistons, which at Turn the drive shaft back and forth in the cylinder space are movable, and with a suction side and a spring-loaded check valve on the high-pressure side and with a component with a respective one forming the cylinder space Through opening, one of the cylinder space High pressure discharge opening leads away, which in the sealing seat of the high pressure side check valve in a die Valve component receiving mounting opening of this component empties.
- Such a radial piston pump is by Mannesmann-Rexroth GmbH became known (see DE-A-4 213 798).
- the assembly of the High pressure side check valve is complicated because of this comprises several components, which in the assembly opening of the component forming the respective cylinder space can be used have to.
- the check valve is not accessible because the Valve components are covered by a flange plate, which holds the valve components in the assembly opening.
- the High pressure sealing is using Made of elastomer seals.
- the present invention has the object based on a radial piston pump of the type mentioned improve that in the field of high pressure Check valve facilitates assembly and cost-effective manufacturability is achieved.
- the assembly of the high pressure side check valve first the preferably spherical valve body in the Installation opening introduced.
- the pre-assembled valve unit preferably a closure element with an external thread, that can be screwed into an internal thread of the assembly opening.
- the high pressure seal is preferably achieved by that the closure element with an axial shoulder or face on an axial step of the assembly opening supported.
- the Invention has the sealing surface pairing of the closure element and axial step in the assembly opening a flat sealing surface on one part and a preferably sharp-edged one closed revolving survey on the other part of the when tightening the components against each other Effect high pressure sealing.
- This turns out at Bracing the components against each other a sealing plastic deformation along the line of contact of the plan and the sharp-edged sealing surface. So you don't need any elastomeric sealing elements subject to aging to be used, moreover, almost always one from the other decoupled defined system of the components to each other prevent.
- a high pressure seal can be achieved by the preassembled valve unit against the Assembly opening and also the one or more cylinder spaces metallic component is attracted.
- the valve unit includes a cup-shaped limited movement in the closing or opening direction and loading element biased in the closing direction, which forming a spring plate with the outside of its pot base forces the valve body into contact with the sealing seat.
- the Valve body is preferably spherical, so the outside of the pot bottom of the loading element preferably a curvature corresponding to the spherical shape.
- the cup-shaped loading element is dimensioned such that biased and in its axial displaceability trained that when installing the valve unit with the Can be placed on the outside of its base against the valve body and then slightly towards the closure element can be moved back until its sealing end position has reached.
- the pre-assembled valve unit preferably comprises one pin-shaped approach, the one facing away from the bottom of the pot Side engages in the pot-shaped loading element and that Loading element during its axial displacement in the closing or opening direction leads radially.
- the pot-shaped Load element could, for example, by one around the pin-shaped approach provided spiral spring in Closing direction, i.e. in the direction of the sealing seat Assembly opening are biased.
- the coil spring could become support here, for example, against the closure element.
- the cup-shaped loading element via an axial Lifting gear blocked.
- the preassembled valve unit has the pin-shaped approach a reduced diameter Axial section on, preferably by a ring groove is formed, and the pot-shaped loading element engages a projection in this axial section.
- the inventive concept is the advantage of crimping the Closure element facing edge of the cup-shaped Load element formed.
- the crimp can be in Continuous circumferential direction. It turns out however, as advantageous if only in the circumferential direction of the edge one or more sections are crimped so that a not crimped edge section of the pot-shaped Load element to form a stroke limitation on a axial stop surface can be created.
- the axial Stop surface can preferably be from one end of the Closure element are formed.
- FIGs 1 and 2 show a radial piston pump High-pressure fuel supply in fuel injection systems of internal combustion engines.
- the radial piston pump includes an in a pump housing 2 mounted drive shaft 4 with a eccentric shaft section 6.
- On the Eccentric shaft section 6 is an intermediate bush 8 provided, against which the shaft section 6 is rotatable is.
- the intermediate bush 8 comprises three each by 120 ° offset flats 10 against each other a piston 12 with a block-like contact section 14 supported.
- the pistons 12 are each in one massive metallic component 16 formed cylinder space 18th displaceable to the drive shaft 4 in the radial direction added.
- To form the cylinder chamber 18 is in the Component 16 a through opening 20 is provided.
- the Through opening 20 is stepped and has one the actual cylinder space 18 forming smaller diameter section 22 and one diameter larger section 24.
- a closure element 26 is pressure-tight used.
- the closure element 26 is one Locking screw 28, which is still interposed plate 30 to be described in more detail and an O-ring seal 32 in the larger diameter section 24 of the through opening 20 is screwed.
- the plate 30 lies with a flat Contact surface 34 on a flat collar-like surface 36 on.
- the screw plug 28 has on the plate 30 facing end 38 closed a sharp-edged circumferential bead-shaped elevation 40, a so-called Biting edge, which, against the flat top of the plate 30 is applied.
- the closure element 26 takes up together with the plate 30 intake-side check valve 42.
- the valve plate 30 includes a central opening 44 through which a plunger 46 a valve body 48 of the suction-side check valve 42 round picks.
- the plunger 46 engages in a recess 50 in the screw plug 28 and has on his opposite end facing the piston a valve plate 52 on, against a sealing seat formed by the plate 30 54 can be applied sealingly.
- a collar bushing element 58 is applied to the plunger section 56 engaging in the recess 50.
- a spring 62 is supported between the collar 60 of the collar bushing element 58 and the plate 30 and prestresses the plunger 46 in the direction of the recess 50 in the locking screw 28.
- the fuel supply to the cylinder chamber 18 takes place through a radial opening 64 in the plate 30, which opens into the plunger opening 44.
- the plunger 46 and thus the valve plate 52 are lifted from its sealing seat 54 as a result of the resulting negative pressure, and fuel is drawn into the cylinder chamber 18 via the opening 64.
- the intake-side check valve 42 closes and fuel under high pressure is supplied to the internal combustion engine via a radial bore 66 and a high-pressure side check valve designated overall by reference numeral 68 via a high-pressure delivery line 70 and a high-pressure connection (not shown).
- the high-pressure check valve 68 is designed as follows:
- radial mounting opening 74 is provided in the metallic component 60, which also the cylinder space 18 is one to the longitudinal direction of the cylinder space 18 .
- the one mentioned above Bore 66 opens into the mounting opening 74, which is in the area of Mouth runs conically and there a valve seat 76 for a spherical valve body 78 of the check valve 68 forms.
- the conical section widens to one cylindrical portion 80 with a first diameter, the via an axial step 82 into an enlarged end section 84 passes with an internal thread 86.
- the valve unit 88 includes a Locking element 90 in the form of a locking screw that with an external thread 92 can be screwed into the internal thread 86 is. From the inward face 94 of the Closure element 90 projects from a pin-shaped extension 96. The pin-shaped projection 96 engages in a cup-shaped Loading element 98 a. Between a pot bottom 100 and an end face 102 of the pin-shaped projection 96 is one Compression spring 104 supported, which is the cup-shaped Load member 98 toward valve body 78 biases. The loading element 98 is therefore floating Storage by the pin-shaped projection 96 in the direction of adjustment 106 of the valve displaceable and is thereby pin-shaped approach performed in the radial direction. By the Play this floating storage can manufacturing tolerances be balanced.
- the pin-shaped extension 96 points in the area of the circumferential Edge 108 of the loading element 98 a reduced-diameter axial section 110 in the form of a Ring puncture. That reaches into this ring puncture Pot-shaped loading element 98 with a crimped Edge portion 112 a. This prevents the cup-shaped loading element 98 under the pretension of the Spring 104 detaches from the pin-shaped extension 96.
- I'm not installed state of the valve unit 88 is the crimped edge portion 112 against a flank 114 of the reduced-diameter axial section 110.
- Another not crimped edge portion 116 of the cup-shaped The end face 118 of the load element 98 is against an axial stop region 120 of the closure element 90 applied.
- the closure element 90 accordingly has the Closure element 26 on its end face 94 a circumferential sharp-edged bead-shaped elevation 122, which against the axial step 82 of the mounting opening 74 forming a biting edge is tightened, whereby a high pressure seal is achieved becomes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
- Figur 1
- eine Längsschnittansicht einer Radialkolbenpumpe nach der Erfindung; und
- Figur 2
- eine Teilansicht aus Figur 1 in vergrößerter Darstellung.
Das hochdruckseitige Rückschlagventil 68 ist wie folgt ausgebildet:
Claims (12)
- Radialkolbenpumpe zur Kraftstoffhochdruckversorgung bei Kraftstoffeinspritzsystemen von Brennkraftmaschinen, insbesondere bei einem Common-Rail-Einspritzsystem, mit einer in einem Pumpengehäuse (2) gelagerten Antriebswelle (4), die exzentrisch ausgebildet ist oder in Umfangsrichtung mehrere nockenartige Erhebungen aufweist, und mit vorzugsweise mehreren bezüglich der Antriebswelle (4) radial in einem jeweiligen Zylinderraum (18) angeordneten Kolben (12), die bei Umdrehen der Antriebswelle (4) in dem Zylinderraum (18) hin- und her bewegbar sind, und mit einem ansaugseitigen und einem hochdruckseitigen federvorgespannten Rückschlagventil (42, 68) und mit einem Bauteil (16) mit einer den Zylinderraum (18) bildenden Durchgangsöffnung (20), wobei vom Zylinderraum (18) eine Hochdruckförderöffnung (66) wegführt, welche im Dichtsitz (76) des hochdruckseitigen Rückschlagventils (68) in einer die Ventilkomponenten aufnehmenden Montageöffnung (74) dieses Bauteils (16) mündet, dadurch gekennzeichnet, dass das hochdruckseitige Rückschlagventil (68) mit Ausnahme eines gegen den Dichtsitz (76) anlegbaren Ventilkörpers (78) als vormontierte Einheit (88) in die Montageöffnung (74) einsetzbar ist und unter Ausbildung einer Hochdruckabdichtung gegen das Bauteil (16) festziehbar ist, und dass die Ventileinheit (88) ein topfförmiges in Schließ- bzw- Öffnungsrichtung. begrenzt verschiebliches und in Schließrichtung vorgespanntes Belastungselement (98) umfasst, welches mit der Außenseite seines Topfbodens (100) den Ventilkörper (78) in Anlage an den Dichtsitz (76) zwingt.
- Radialkolbenpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die vormontierte Ventileinheit (88) ein Verschlußelement (90) mit einem Außengewinde (92) aufweist, das in ein Innengewinde (86) der Montageöffnung (74) einschraubbar ist.
- Radialkolbenpumpe nach Anspruch 2, dadurch gekennzeichnet, dass sich das Verschlußelement (90) mit einer axialen Schulter oder Stirnseite (94) an einer axialen Stufe (82) der Montageöffnung (74) abstützt und dadurch die Hochdruckabdichtung bewirkt.
- Radialkolbenpumpe nach Anspruch 3, dadurch gekennzeichnet, dass die Dichtflächenpaarung von Verschlußelement (90) und axialer Stufe (82) in der Montageöffnung (74) eine plane Dichtfläche an dem einen Teil und eine kantige geschlossen umlaufende Erhebung (122) an dem anderen Bauteil aufweisen, die beim Festziehen der Bauteile gegeneinander eine Hochdruckabdichtung bewirken.
- Radialkolbenpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Ventilkörper (76) kugelförmig ist und die Außenseite des Topfbodens (100) eine der Kugelform entsprechende Wölbung aufweist.
- Radialkolbenpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass von dem Verschlußelement (90) ein stiftförmiger Ansatz (96) von der vom Topfboden (100) abgewandten Seite in das Belastungselement (98) eingreift.
- Radialkolbenpumpe nach Anspruch 6, dadurch gekennzeichnet, dass der stiftförmige Ansatz (96) einen durchmesserverringerten Axialabschnitt (110) aufweist und dass das topfförmige Belastungselement (98) mit einem Vorsprung in diesen Axialabschnitt eingreift.
- Radialkolbenpumpe nach Anspruch 7, dadurch gekennzeichnet, dass der Vorsprung von einer Einbördelung des dem Verschlußelement (90) zugewandten Randes (108) des topfförmigen Belastungselements (98) gebildet ist.
- Radialkolbenpumpe nach Anspruch 8, dadurch gekennzeichnet, dass in Umfangsrichtung des Randes nur ein oder mehrere Teilabschnitte (112) eingebördelt sind.
- Radialkolbenpumpe nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass ein nicht eingebördelter Randabschnitt (116) des topfförmigen Belastungselements (98) zur Ausbildung einer Hubbegrenzung an eine axiale Anschlagsfläche (120) anlegbar ist.
- Radialkolbenpumpe nach Anspruch 10, dadurch gekennzeichnet, dass die axiale Anschlagsfläche (120) von einer Stirnseite (94) des Verschlußelements (90) gebildet ist.
- Radialkolbenpumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass im Inneren des topfförmigen Belastungselements (98) eine Feder (104) vorgesehen ist, die sich einenends gegen die Innenseite des Topfbodens (100) und anderenends gegen eine Stirnseite des stiftförmigen Ansatzes (96) abstützt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19744577 | 1997-10-09 | ||
DE1997144577 DE19744577A1 (de) | 1997-10-09 | 1997-10-09 | Radialkolbenpumpe zur Kraftstoffhochdruckversorgung |
PCT/DE1998/002611 WO1999019621A1 (de) | 1997-10-09 | 1998-09-04 | Radialkolbenpumpe zur kraftstoffhochdruckversorgung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1058783A1 EP1058783A1 (de) | 2000-12-13 |
EP1058783B1 true EP1058783B1 (de) | 2002-04-10 |
Family
ID=7845035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98952547A Expired - Lifetime EP1058783B1 (de) | 1997-10-09 | 1998-09-04 | Radialkolbenpumpe zur kraftstoffhochdruckversorgung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6332761B1 (de) |
EP (1) | EP1058783B1 (de) |
JP (1) | JP4235358B2 (de) |
DE (2) | DE19744577A1 (de) |
WO (1) | WO1999019621A1 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19848040A1 (de) * | 1998-10-17 | 2000-04-20 | Bosch Gmbh Robert | Kolbenpumpe zur Kraftstoffhochdruckversorgung |
DE19860672A1 (de) * | 1998-12-29 | 2000-07-13 | Bosch Gmbh Robert | Kolbenpumpe zur Kraftstoffhochdruckerzeugung |
DE19941688C2 (de) * | 1999-09-01 | 2001-08-09 | Siemens Ag | Einspritzeinrichtung für eine Brennkraftmaschine mit Direkteinspritzung |
DE19946842C2 (de) | 1999-09-30 | 2001-08-23 | Bosch Gmbh Robert | Hochdruckpumpe |
IT248790Y1 (it) * | 1999-11-30 | 2003-02-20 | Elasis Sistema Ricerca Fiat | Valvola di mandata ad alta pressione per il combustibile di un motorea combustione interna. |
AT412230B (de) | 1999-12-07 | 2004-11-25 | Hoerbiger Hydraulik | Hydraulische pumpeneinheit |
DE10115856C1 (de) * | 2001-03-30 | 2002-08-08 | Bosch Gmbh Robert | Hochdruck-Kraftstoffpumpe für eine direkteinspritzende Brennkraftmaschine, Kraftstoffsystem für eine direkteinspritzende Brennkraftmaschine, sowie direkteinspritzende Brennkraftmaschine |
DE50205369D1 (de) | 2001-08-31 | 2006-01-26 | Siemens Ag | Rückschlagventil für eine pumpe |
US6582204B2 (en) * | 2001-09-06 | 2003-06-24 | The United States Of America As Represented By The Administrator Of The U.S. Enviromental Protection Agency | Fully-controlled, free-piston engine |
DE10200275A1 (de) | 2002-01-07 | 2003-07-24 | Siemens Ag | Einlass- bzw. Auslassventil für eine Pumpe |
EP1382851A1 (de) | 2002-07-19 | 2004-01-21 | CRENSO GmbH Creative Energy Solutions | Pumpe für Flüssigkeiten und Dichtungsanordnung mit Pumpe für eine zirkulierende Sperrflüssigkeit |
ITRE20030019A1 (it) * | 2003-02-19 | 2004-08-20 | Annovi Reverberi Spa | "pompa ad alta pressione a pistoni tuffanti" |
JP2006513367A (ja) * | 2003-05-22 | 2006-04-20 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 内燃機関の高圧噴射装置の高圧ポンプのための逆止弁 |
DE10346211A1 (de) | 2003-05-22 | 2004-12-09 | Robert Bosch Gmbh | Rückschlagventil, insbesondere für eine Hochdruckpumpe einer Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
DE102004027825A1 (de) * | 2004-02-11 | 2005-09-01 | Robert Bosch Gmbh | Hochdruckpumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
JP2007501913A (ja) * | 2004-02-11 | 2007-02-01 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 特に内燃機関の燃料噴射装置に用いられる高圧ポンプ |
DE102004041764A1 (de) | 2004-08-28 | 2006-03-02 | Robert Bosch Gmbh | Hochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
US7582793B2 (en) | 2004-09-02 | 2009-09-01 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7692036B2 (en) | 2004-11-29 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
JP2007120492A (ja) * | 2005-09-29 | 2007-05-17 | Denso Corp | 高圧燃料ポンプ |
DE102005061409A1 (de) * | 2005-12-22 | 2007-06-28 | Robert Bosch Gmbh | Elektromagnetisch betätigbares Ventil |
JP2009531577A (ja) * | 2006-01-31 | 2009-09-03 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 内燃機関に燃料を供給するための高圧ポンプ |
EP1813845A1 (de) * | 2006-01-31 | 2007-08-01 | Centro Studi Componenti per Veicoli S.P.A. | Hochdruckkolbenpumpe zur Kräftstoffförderung an eine Brennkraftmaschine |
DE102006016897A1 (de) * | 2006-04-11 | 2007-10-25 | Robert Bosch Gmbh | Pumpe, insbesondere für ein Hydraulikaggregat |
US8287256B2 (en) * | 2007-11-01 | 2012-10-16 | Caterpillar Inc. | Valve assembly |
ITMI20080246A1 (it) * | 2008-02-15 | 2009-08-16 | Bosch Gmbh Robert | Pompa di alta pressione e impianto di alimentazione di combustibile comprendente tale pompa di alta pressione |
DE102008001824A1 (de) | 2008-05-16 | 2009-11-19 | Robert Bosch Gmbh | Pumpe, insbesondere Kraftstoffhochdruckpumpe, und Rückschlagventil, insbesondere für eine Pumpe |
US20100051119A1 (en) * | 2008-09-04 | 2010-03-04 | Klein Gregory A | Pressure relief valve |
DE102009046372A1 (de) * | 2009-11-04 | 2011-05-05 | Robert Bosch Gmbh | Ventil mit einem kugelartigen Dichtelement |
DE102010001880A1 (de) * | 2010-02-12 | 2011-08-18 | Robert Bosch GmbH, 70469 | Zylinderkopf für eine Kraftstoffhochdruckpumpe |
CN102102611B (zh) * | 2011-03-14 | 2014-05-28 | 福建省莆田市中涵机动力有限公司 | 高压共轨***直列式供油泵 |
US9856844B2 (en) * | 2015-04-28 | 2018-01-02 | MAGNETI MARELLI S.p.A. | Fuel pump for a direct injection system with a better hydraulic sealing of the intake valve |
DE102020114107A1 (de) | 2020-05-26 | 2021-12-02 | Schwäbische Hüttenwerke Automotive GmbH | Separater Ventilsitz |
CN114962106B (zh) * | 2022-05-25 | 2022-12-06 | 安徽腾达汽车科技有限公司 | 一种阀门机构及油泵 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2387401A1 (fr) * | 1977-04-12 | 1978-11-10 | Citroen Sa | Conjoncteur-disjoncteur hydraulique |
US4277229A (en) * | 1977-11-21 | 1981-07-07 | Partek Corporation Of Houston | High pressure fluid delivery system |
DE3039197C2 (de) * | 1980-10-17 | 1986-07-17 | Mannesmann Rexroth GmbH, 8770 Lohr | Hydrostatische Radialkolbenpumpe |
DE3341575C2 (de) * | 1983-11-17 | 1996-06-05 | Bosch Gmbh Robert | Druckventil für Kraftstoffeinspritzpumpen |
DE3513164A1 (de) * | 1985-04-12 | 1986-10-23 | Robert Bosch Gmbh, 7000 Stuttgart | Radialkolbenpumpe |
DE4213798C2 (de) * | 1992-04-27 | 2002-10-24 | Bosch Gmbh Robert | Radialkolbenpumpe, insbesondere Kraftstoffpumpe für Verbrennungsmotoren |
DE4239362A1 (de) * | 1992-11-24 | 1994-05-26 | Teves Gmbh Alfred | Ventil, insbesondere Druckventil für eine Radialkolbenpumpe, mit wenigen Komponenten |
US5382140A (en) * | 1993-02-11 | 1995-01-17 | Elasis Sistema Ricerca Fiat Nel Mezzogiorno | Radial-piston pump |
DE19653895A1 (de) * | 1996-12-21 | 1998-06-25 | Teves Gmbh Alfred | Pumpe, insbesondere für eine hydraulische Bremsschlupfregelanlage |
US6238189B1 (en) * | 1997-07-11 | 2001-05-29 | Robert Bosch Gmbh | Radial piston pump for high-pressure fuel supply |
-
1997
- 1997-10-09 DE DE1997144577 patent/DE19744577A1/de not_active Ceased
-
1998
- 1998-09-04 EP EP98952547A patent/EP1058783B1/de not_active Expired - Lifetime
- 1998-09-04 JP JP2000516150A patent/JP4235358B2/ja not_active Expired - Fee Related
- 1998-09-04 US US09/529,224 patent/US6332761B1/en not_active Expired - Fee Related
- 1998-09-04 DE DE59803797T patent/DE59803797D1/de not_active Expired - Lifetime
- 1998-09-04 WO PCT/DE1998/002611 patent/WO1999019621A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
JP4235358B2 (ja) | 2009-03-11 |
DE19744577A1 (de) | 1999-04-22 |
DE59803797D1 (de) | 2002-05-16 |
US6332761B1 (en) | 2001-12-25 |
EP1058783A1 (de) | 2000-12-13 |
JP2001520349A (ja) | 2001-10-30 |
WO1999019621A1 (de) | 1999-04-22 |
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