EP1121530B1 - Kolbenpumpe zur kraftstoffhochdruckversorgung - Google Patents

Kolbenpumpe zur kraftstoffhochdruckversorgung Download PDF

Info

Publication number
EP1121530B1
EP1121530B1 EP99939360A EP99939360A EP1121530B1 EP 1121530 B1 EP1121530 B1 EP 1121530B1 EP 99939360 A EP99939360 A EP 99939360A EP 99939360 A EP99939360 A EP 99939360A EP 1121530 B1 EP1121530 B1 EP 1121530B1
Authority
EP
European Patent Office
Prior art keywords
plate
pump housing
channel
pump
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
Application number
EP99939360A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1121530A1 (de
Inventor
Peter Grabert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1121530A1 publication Critical patent/EP1121530A1/de
Application granted granted Critical
Publication of EP1121530B1 publication Critical patent/EP1121530B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Definitions

  • the invention relates to a piston pump according to the Genus of claim 1.
  • Such a piston pump is already known (DE 44 01 074 A1), in which a first plate flange-shaped with a central, radial against one Drive shaft of the pump facing a cylinder Pump piston formed and about half of the Plate thickness suitable in a countersink of a pump housing is included.
  • a valve plate On the side of the first facing away from the shaft Plate is a valve plate with a first and a second check valve supported.
  • the first plate and the valve plate are from a second, the pump housing final plate overlapped, which with the Pump housing is screwed.
  • the second plate is a fuel with low pressure leading Channel, on the one hand, with a channel of the pump housing and on the other hand in connection with the first check valve stands.
  • the radial piston pump can Assembly errors occur which affect the pump function impair or lead to failure. Possible errors are, for example, incorrect insertion of the Form seal in the recess of the second plate with the Consequence of a cross-sectional restriction of the first channel, Tilting the connector in the course of the second channel with the result of a leak and the misalignment of the second plate, the latter error also caused by uneven screwing of the second plate on Pump housing can be caused.
  • the piston pump according to the invention with the features of Claim 1 has the advantage that less constructive components than at the known level of development be used that a defined geometric assignment of the two plates lying flat on top of each other and that the second check valve on a manufacturing and assembly technically favorable place is arranged.
  • a radial piston pump 1 designed as a high-pressure pump is for high-pressure fuel supply Fuel injection systems, especially in a common rail injection system, provided by internal combustion engines.
  • the radial piston pump 1 has a pump housing 2 with a therein drive shaft 3, which one Eccentric section 4, on which a cam ring 5 is mounted is.
  • the by means of the eccentric section 4 Drive shaft 3 longitudinally movable pump piston 6 is in one Cylinder 9 guided, which in an interior 10 of the Pump housing 2 protrudes.
  • the pump piston 6 with Slide shoe 7 and the cylinder 9 form in connection with a first, suction-side check valve 11 and one second, pressure-side check valve 12 is a pump element 13 of the radial piston pump 1.
  • This is preferably two equipped further pump elements 13, which in a common, with respect to the drive shaft 13 radial plane lie and are offset from each other by 120 °.
  • the pump housing 2 is against the drive shaft side Interior through a right angle to the pump piston axis extending first plate 16 completed.
  • the first plate 16 lies essentially over the entire surface of the pump housing 2.
  • the cylinder 9 is in one piece on the first plate 16 educated.
  • a receiving the pump piston 6 Cylinder chamber 17 is continued in the first plate 16.
  • the first plate 16 faces away from a second Plate 18 covered with which the cylinder space 17th is completed.
  • the second plate 18 is congruent and essentially over the entire surface of the first plate 16 on.
  • the two plates 16 and 18 are with screws 19 connected to the pump housing 2.
  • Check valve 11 arranged. It has one spring-loaded, disc-shaped closing body 20, the one flat valve seat 21 assigned to the second plate 18 is. The second plate 18 is therefore at least in the area of the valve seat 21 hardened.
  • the second check valve 12 is between the first plate 16 and the pump housing 2 arranged. It has a spherical closing body 22 with a hollow cone-shaped valve seat 23. This is in the first plate 16 formed; in this respect is the first record hardened at least in the area of the valve seat.
  • the radial piston pump 1 is by means of a Low-pressure feed pump 26, for example, from one Diesel fuel reservoir 27 of a motor vehicle with Fuel can be supplied. This is the low pressure feed pump 26 to a in the pump housing 2 of the radial piston pump 1 arranged overflow valve 28 connected.
  • the Overflow valve 28 is located in the pump housing 2 trained first channel 29 in connection, which the penetrates first plate 16 at right angles to its plane and opens into the second plate 18.
  • the first channel 29 is in the second plate 18 continued in its plane and ends after a 90 ° deflection on the first Check valve 11.
  • the as a circular cylindrical bore formed first channel 29 is in the second plate 18th sealed by a pressed-in ball 30.
  • the first channel 29 opens in the middle of the valve seat 21 of the first check valve 11 in the cylinder chamber 17. From Cylinder chamber 17 is inclined in the first plate 16 extending, second channel 31, which to the second Check valve 12 leads and in the middle of its valve seat 23 opens. In the area of the first plate 16, the second one Channel 31 none to the outside of the radial piston pump 1 leading connection to be closed. After the first Plate 16 is the second channel 31 within the Pump housing 2 continued, where it with a connection 33rd for a fuel high-pressure accumulator and with one Electromagnetically controllable pressure relief valve 34 (only partially shown) with downstream connection to the Diesel fuel reservoir 27 communicates.
  • a first Low pressure seal 37 is between the pump housing 2 and the first plate 16 arranged.
  • the low pressure seal 37 is preferably designed as a rubber-elastic O-ring and in one concentrically spaced the cylinder 9 enclosing groove of the first plate 16 added.
  • a second low-pressure seal 38 is correspondingly in the first plate 16 and a third Low pressure seal 39 arranged in the second plate 18, which each enclose only the first channel 29 and are also designed as a rubber-elastic O-ring.
  • a first high pressure seal 40 is between the first Plate 16 and the second plate 18 arranged and concentrically encloses the first check valve 11 and the cylinder space 17.
  • a second high pressure seal 41 is located between the first plate 16 and the Pump housing 2. It only encloses the second Check valve 12.
  • the high pressure seals 40 and 41 can be designed as metallic seals; for example, they can act as a bite edge seal be designed. In the drawing they are Low pressure seals 37, 38, 39 and the High-pressure seals 40, 41 are only indicated symbolically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP99939360A 1998-10-17 1999-06-17 Kolbenpumpe zur kraftstoffhochdruckversorgung Expired - Lifetime EP1121530B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19848040 1998-10-17
DE19848040A DE19848040A1 (de) 1998-10-17 1998-10-17 Kolbenpumpe zur Kraftstoffhochdruckversorgung
PCT/DE1999/001781 WO2000023710A1 (de) 1998-10-17 1999-06-17 Kolbenpumpe zur kraftstoffhochdruckversorgung

Publications (2)

Publication Number Publication Date
EP1121530A1 EP1121530A1 (de) 2001-08-08
EP1121530B1 true EP1121530B1 (de) 2003-01-22

Family

ID=7884884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99939360A Expired - Lifetime EP1121530B1 (de) 1998-10-17 1999-06-17 Kolbenpumpe zur kraftstoffhochdruckversorgung

Country Status (5)

Country Link
US (1) US6450788B1 (ja)
EP (1) EP1121530B1 (ja)
JP (1) JP4199930B2 (ja)
DE (2) DE19848040A1 (ja)
WO (1) WO2000023710A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8590442B2 (en) 2007-12-06 2013-11-26 Robert Bosch Gmbh Gasket for high-pressure pump and high-pressure pump comprising said gasket

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860672A1 (de) * 1998-12-29 2000-07-13 Bosch Gmbh Robert Kolbenpumpe zur Kraftstoffhochdruckerzeugung
IT1308780B1 (it) * 1999-07-02 2002-01-10 Elasis Sistema Ricerca Fiat Pompa ad alta pressione munita di valvola di intercettazione perl'alimentazione di combustibile ad un motore a combustione interna.
IT1310755B1 (it) * 1999-11-30 2002-02-22 Elasis Sistema Ricerca Fiat Pompa idraulica ad alta pressione, in particolare pompa a pistoniradiali per il carburante di un motore a combustione interna.
DE10221305A1 (de) * 2002-05-14 2003-11-27 Bosch Gmbh Robert Radialkolbenpumpe für Kraftstoffeinspritzsystem mit verbesserter Hochdruckfestigkeit
US20040022654A1 (en) * 2002-08-05 2004-02-05 Takashi Ishida Piston type small discharge pump
DE10310123A1 (de) * 2003-03-07 2004-09-23 Siemens Ag Radialkolbenpumpe
DE102004041764A1 (de) * 2004-08-28 2006-03-02 Robert Bosch Gmbh Hochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE102006017036A1 (de) 2006-04-11 2007-10-18 Siemens Ag Radialkolbenpumpe zur Kraftstoff-Hochdruckversorgung bei einer Brennkraftmaschine
DE102007011319A1 (de) 2007-03-08 2008-09-11 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe
DE102007038525A1 (de) * 2007-08-16 2009-02-19 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe
US20090057345A1 (en) * 2007-08-31 2009-03-05 Dukes Stephen A Fluid dispenser
ITMI20072219A1 (it) * 2007-11-23 2009-05-24 Bosch Gmbh Robert Valvola di sovrappressione e pompa di alta pressione comprendente tale valvola di sovrappressione
JP5295802B2 (ja) * 2009-01-30 2013-09-18 ヤンマー株式会社 燃料噴射ポンプ
US20140170006A1 (en) * 2012-12-18 2014-06-19 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2333103A1 (de) * 1973-06-29 1975-01-16 Rexroth Gmbh G L Radialkolbenmaschine
DE2557731B1 (de) * 1975-12-20 1977-04-28 Langen & Co Hydraulische Radialkolbenpumpe
IT1261556B (it) * 1992-04-27 1996-05-23 Elasis Sistema Ricerca Fiat Pompa a pistoni radiali, in particolare per il combustibile di motori a combustione interna.
DE4213781C2 (de) * 1992-04-27 2002-10-24 Bosch Gmbh Robert Radialkolbenpumpe, insbesondere Kraftstoffpumpe für Verbrennungsmotoren
DE4401074B4 (de) * 1994-01-15 2007-01-18 Robert Bosch Gmbh Pumpenanordnung, insbesondere zur Förderung von Kraftstoff aus einem Vorratsbehälter zu einer Brennkraftmaschine
US6238189B1 (en) * 1997-07-11 2001-05-29 Robert Bosch Gmbh Radial piston pump for high-pressure fuel supply
DE19744577A1 (de) * 1997-10-09 1999-04-22 Bosch Gmbh Robert Radialkolbenpumpe zur Kraftstoffhochdruckversorgung
DE19756087A1 (de) * 1997-12-17 1999-06-24 Bosch Gmbh Robert Hochdruckpumpe zur Kraftstoffversorgung bei Kraftstoffeinspritzsystemen von Brennkraftmaschinen
DE19841642C2 (de) * 1998-09-11 2002-07-18 Bosch Gmbh Robert Radialkolbenpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8590442B2 (en) 2007-12-06 2013-11-26 Robert Bosch Gmbh Gasket for high-pressure pump and high-pressure pump comprising said gasket

Also Published As

Publication number Publication date
US6450788B1 (en) 2002-09-17
DE19848040A1 (de) 2000-04-20
JP4199930B2 (ja) 2008-12-24
EP1121530A1 (de) 2001-08-08
DE59904113D1 (de) 2003-02-27
JP2002527680A (ja) 2002-08-27
WO2000023710A1 (de) 2000-04-27

Similar Documents

Publication Publication Date Title
EP1121530B1 (de) Kolbenpumpe zur kraftstoffhochdruckversorgung
DE2940606C2 (de) Pumpenventilkopf für Hochdruckpumpen
EP1121531B1 (de) Radialkolbenpumpe für kraftstoffhochdruckerzeugung
DE19604132C2 (de) Hochdruckplungerpumpe, vorzugsweise für Arbeitsdrücke oberhalb 2.000 bar
DE102008043217A1 (de) Kraftstoff-Hochdruckpumpe für eine Brennkraftmaschine
EP1119704A1 (de) Pumpenanordnung zur kraftstoffhochdruckerzeugung
EP1392962A1 (de) Kraftstoffeinspritzeinrichtung mit druckübersetzungseinrichtung und druckübersetzungseinrichtung
EP0931219A1 (de) Kraftstoffhochdruckpumpe
DE102010039210A1 (de) Gebautes Saugventil
DE102010043963A1 (de) Pumpenelement für eine Kraftstoffhochdruckpumpe, Kraftstoffhochdruckpumpe
DE2705489A1 (de) Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
EP1685323B1 (de) Vorrichtung zum dämpfen von druckstössen
EP4121645A1 (de) Kraftstoff-hochdruckpumpe
DE19801353A1 (de) Radialkolbenpumpe zur Kraftstoffhochdruckversorgung
EP2331821A1 (de) Hochdruck-radialkolbenpumpe
EP1604112A1 (de) Radialkolbenpumpe
DE19902259A1 (de) Montageverfahren
DE2930499A1 (de) Kraftstoff-einspritzpumpe fuer brennkraftmaschinen, insbesondere fuer dieselmotoren
DE2824184C2 (ja)
DE102013210021A1 (de) Hochdruckpumpe für ein Kraftstoffeinspritzsystem mit einem Saugventil
DE102022208452A1 (de) Kraftstoffüberströmventil für eine Kraftstoffhochdruckpumpe
DE102004034672A1 (de) Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10237593A1 (de) Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE102016201897A1 (de) Pumpe zur Förderung eines Fluids
WO2021129966A1 (de) Kraftstoff-hochdruckpumpe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010517

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20020503

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59904113

Country of ref document: DE

Date of ref document: 20030227

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030428

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20031023

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080618

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080624

Year of fee payment: 10

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090617

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090617

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100824

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59904113

Country of ref document: DE

Effective date: 20120103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120103