EP0840009A2 - Pompe à haute pression - Google Patents

Pompe à haute pression Download PDF

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Publication number
EP0840009A2
EP0840009A2 EP97110986A EP97110986A EP0840009A2 EP 0840009 A2 EP0840009 A2 EP 0840009A2 EP 97110986 A EP97110986 A EP 97110986A EP 97110986 A EP97110986 A EP 97110986A EP 0840009 A2 EP0840009 A2 EP 0840009A2
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
pump
low
working chamber
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.)
Granted
Application number
EP97110986A
Other languages
German (de)
English (en)
Other versions
EP0840009B1 (fr
EP0840009A3 (fr
Inventor
Manfred Kraemer
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 EP0840009A2 publication Critical patent/EP0840009A2/fr
Publication of EP0840009A3 publication Critical patent/EP0840009A3/fr
Application granted granted Critical
Publication of EP0840009B1 publication Critical patent/EP0840009B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/06—Pumps peculiar thereto
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • F02M59/367—Pump inlet valves of the check valve type being open when actuated
    • 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
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • F04B49/243—Bypassing by keeping open the inlet valve
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0076—Piston machines or pumps characterised by having positively-driven valving the members being actuated by electro-magnetic means

Definitions

  • the high-pressure pump 1 has a pump piston 3, which can be moved back and forth in a pump cylinder 4 via a plunger (not shown) and which delimits a working chamber 5 of the high-pressure pump 1 as a movable wall.
  • a high-pressure line 6 leads from the working chamber 5 to the high-pressure accumulator 2; a check valve 7 opening towards the high-pressure accumulator 2 is inserted into it.
  • the device also includes a low-pressure pump 14, a low-pressure container 15 and a check valve or low-pressure relief valve 16 in a low-pressure circuit 17.
  • FIG. 4 shows a different type of high-pressure pump 18 using the same reference numerals for the parts corresponding to the embodiment according to FIGS. 1 to 3, but the high-pressure side and the low-pressure side are designed just as for the type according to FIGS. 1 to 3.
  • a pump piston 19 is provided with a connecting channel 20, Via which a connection between a working chamber 21 of the high-pressure pump 18 and the low-pressure container 15 is established in the TDC, that is to say at the end of the delivery stroke.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Reciprocating Pumps (AREA)
  • Magnetically Actuated Valves (AREA)
EP97110986A 1996-10-29 1997-07-02 Pompe à haute pression Expired - Lifetime EP0840009B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19644915A DE19644915A1 (de) 1996-10-29 1996-10-29 Hochdruckpumpe
DE19644915 1996-10-29

Publications (3)

Publication Number Publication Date
EP0840009A2 true EP0840009A2 (fr) 1998-05-06
EP0840009A3 EP0840009A3 (fr) 1999-12-01
EP0840009B1 EP0840009B1 (fr) 2003-10-15

Family

ID=7810300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97110986A Expired - Lifetime EP0840009B1 (fr) 1996-10-29 1997-07-02 Pompe à haute pression

Country Status (5)

Country Link
US (1) US6116870A (fr)
EP (1) EP0840009B1 (fr)
JP (1) JPH10141177A (fr)
KR (1) KR100514275B1 (fr)
DE (2) DE19644915A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793283A1 (fr) * 1999-05-07 2000-11-10 Leduc Rene Hydro Sa Procede permettant de fournir un debit variable de liquide a tres haute pression et pompe pour la mise en oeuvre de ce procede
EP1306553A2 (fr) * 2001-10-27 2003-05-02 Robert Bosch Gmbh Pompe à carburant, système de distribution, procédé d'exploitation dudit système et moteur à combustion interne
EP1477665A2 (fr) * 1999-02-09 2004-11-17 Hitachi, Ltd. Pompe d'alimentation en combustible à haute pression pour moteur à combustion interne
KR100514275B1 (ko) * 1996-10-29 2005-11-25 로베르트 보쉬 게엠베하 고압펌프
EP1701031A1 (fr) * 2005-03-11 2006-09-13 Hitachi, Ltd. Un mécanisme d'entraînement électromagnétique d'une pompe d'approvisionnement en carburant à haute pression
WO2012038196A1 (fr) * 2010-09-20 2012-03-29 Robert Bosch Gmbh Soupape d'aspiration commandée
WO2013127545A1 (fr) * 2012-03-01 2013-09-06 Robert Bosch Gmbh Pompe à carburant
DE102013225390A1 (de) 2013-12-10 2015-06-11 Robert Bosch Gmbh Verfahren zum Betreiben einer Kraftstoffhochdruckpumpe einer Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE102013225418A1 (de) 2013-12-10 2015-06-11 Robert Bosch Gmbh Verfahren zum Betreiben einer Kraftstoffhochdruckpumpe einer Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
CN106555745A (zh) * 2015-09-25 2017-04-05 中国石油化工股份有限公司 液控先导式水力自动调压注水泵

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1306317B1 (it) 1998-07-16 2001-06-04 Magneti Marelli Spa Dispositivo di pompaggio ad alta pressione
DE19834121A1 (de) * 1998-07-29 2000-02-03 Bosch Gmbh Robert Kraftstoffversorgungsanlage einer Brennkraftmaschine
DE19860672A1 (de) * 1998-12-29 2000-07-13 Bosch Gmbh Robert Kolbenpumpe zur Kraftstoffhochdruckerzeugung
DE10139055A1 (de) * 2001-08-08 2003-02-27 Bosch Gmbh Robert Verfahren, Computerprogramm, Steuer- und/oder Regelgerät sowie Kraftstoffsystem für eine Brennkraftmaschine
EP1296061A3 (fr) * 2001-09-21 2005-03-16 Hitachi, Ltd. Pompe à carburant à haute pression
ITBO20010625A1 (it) * 2001-10-12 2003-04-12 Magneti Marelli Powertrain Spa Pompa ad alta pressione a portata variabile
GB2385386A (en) * 2002-02-15 2003-08-20 Delphi Tech Inc Pump assembly
DE10229395B4 (de) * 2002-06-29 2006-02-16 Robert Bosch Gmbh Verdrängermaschine, insbesondere Radialkolbenpumpe in einem Kraftstoffsystem einer Brennkraftmaschine, sowie hydraulisches System
ITBO20020498A1 (it) * 2002-07-30 2004-01-30 Magneti Marelli Powertrain Spa Impianto di iniezione di carburante di tipo common rail con pompa a portata variabile
DE10249688A1 (de) * 2002-10-25 2004-05-06 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe für eine Kraftstoffeinspritzanlage, insbesondere eine Common-Rail-Kraftstoffeinspritzanlage, von Brennkraftmaschinen
ITBO20040322A1 (it) * 2004-05-20 2004-08-20 Magneti Marelli Powertrain Spa Metodo ed impianto per l'iniezione diretta di carburante in un motore a combustione interna
ITBO20040485A1 (it) 2004-07-30 2004-10-30 Magneti Marelli Holding S P A Pompa carburante ad attuazione idraulica per un motore a combustione interna
DE602005009644D1 (de) * 2004-12-17 2008-10-23 Denso Corp Magnetventil, durchflussregelndes Ventil, Kraftstoffhochdruckpumpe und Einspritzpumpe
JP4215000B2 (ja) * 2005-01-19 2009-01-28 株式会社デンソー 高圧ポンプ
US20060255657A1 (en) * 2005-05-13 2006-11-16 De Ojeda William High pressure fluid system inlet throttle and method
US7540721B2 (en) 2005-07-29 2009-06-02 Wagner Spray Tech Corporation Automatic inlet check valve release
JP4107315B2 (ja) * 2005-08-30 2008-06-25 コニカミノルタビジネステクノロジーズ株式会社 情報機器、その制御方法、および、制御プログラム
JP4455470B2 (ja) * 2005-10-19 2010-04-21 日立オートモティブシステムズ株式会社 高圧燃料ポンプ、及び高圧燃料ポンプのノーマルクローズ型の電磁弁のコントローラ
ATE487055T1 (de) * 2006-06-09 2010-11-15 Fiat Ricerche Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine
DE102007034038A1 (de) * 2007-07-20 2009-01-22 Robert Bosch Gmbh Hochdruckpumpe für ein Kraftstoffsystem einer Brennkraftmaschine
DE602007007331D1 (de) 2007-09-13 2010-08-05 Magneti Marelli Spa Verfahren zur Steuerung eines Direkteinspritzungsystems von der Common-Rail Art mit einem Absperrventil um die Flussrate einer Hochdruckkraftstoffpumpe zu regeln
EP2039920B1 (fr) * 2007-09-21 2010-09-08 Magneti Marelli S.p.A. Procédé de contrôle pour système d'injection directe de type rail commun fourni avec robinet de sectionnement pour contrôler le débit d'une pompe à carburant haute pression
EP2042720B1 (fr) 2007-09-26 2010-03-10 Magneti Marelli S.p.A. Procédé de commande pour un système d'injection directe à rampe d'alimentation commune comprenant une pompe à carburant à haute pression
US20090139494A1 (en) * 2007-12-04 2009-06-04 Denso International America, Inc. Dual piston direct injection fuel pump
DE102008036120B4 (de) * 2008-08-01 2010-04-08 Continental Automotive Gmbh Verfahren zur Steuerung einer Hochdruck-Kraftstoffpumpe
JP4655122B2 (ja) * 2008-08-07 2011-03-23 株式会社デンソー 高圧ポンプの燃料導入方法
US9151289B2 (en) * 2008-08-21 2015-10-06 Cummins Inc. Fuel pump
EP2211058A1 (fr) * 2009-01-27 2010-07-28 Sauer-Danfoss ApS Pompe hydraulique
IT1395038B1 (it) 2009-08-12 2012-09-05 Magneti Marelli Spa Metodo di controllo di un impianto di iniezione diretta di tipo common-rail
EP2322802B1 (fr) * 2009-11-13 2014-01-08 Artemis Intelligent Power Limited Vanne contrôlée électroniquement
JP5012922B2 (ja) 2010-02-03 2012-08-29 株式会社デンソー 高圧ポンプ
JP5071525B2 (ja) * 2010-06-09 2012-11-14 株式会社デンソー 高圧ポンプ
DE102010043314A1 (de) * 2010-11-03 2012-05-03 J. Eberspächer GmbH & Co. KG Dosierpumpe
DE102011003396A1 (de) * 2011-01-31 2012-08-02 Continental Automotive Gmbh Pumpeneinheit für eine Hochdruckpumpe
JP5724661B2 (ja) * 2011-06-15 2015-05-27 株式会社デンソー 高圧ポンプおよびその制御方法
JP5630464B2 (ja) * 2012-06-26 2014-11-26 株式会社デンソー 燃料噴射制御装置
DE102012215068A1 (de) 2012-08-24 2014-02-27 Robert Bosch Gmbh Zylinderkopf für eine Pumpe, insbesondere Kraftstoffhochdruckpumpe, und Pumpe mit Zylinderkopf
US9599082B2 (en) * 2013-02-12 2017-03-21 Ford Global Technologies, Llc Direct injection fuel pump
US20140255219A1 (en) * 2013-03-05 2014-09-11 Stanadyne Corporation Valve Configuration For Single Piston Fuel Pump
DE102013210036A1 (de) * 2013-05-29 2014-12-04 Robert Bosch Gmbh Hochdruckpumpe für ein Kraftstoffeinspritzsystem
DE102014225982A1 (de) 2014-12-16 2016-06-16 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe
US10100774B2 (en) * 2015-06-25 2018-10-16 Ford Global Technologies, Llc Systems and methods for fuel injection
WO2017056681A1 (fr) * 2015-09-30 2017-04-06 日立オートモティブシステムズ株式会社 Pompe à carburant haute pression et dispositif de commande
US10330065B2 (en) * 2016-03-07 2019-06-25 Stanadyne Llc Direct magnetically controlled inlet valve for fuel pump
DE102016210752A1 (de) * 2016-06-16 2017-12-21 Robert Bosch Gmbh Förderpumpe für kryogene Kraftstoffe und Kraftstofffördersystem
WO2018085517A2 (fr) * 2016-11-02 2018-05-11 Eaton Corporation Culasse à came-sans came et systèmes
DE102018103252B4 (de) * 2018-02-14 2022-01-20 Danfoss Power Solutions Gmbh & Co. Ohg Verfahren und Vorrichtung zur Entlüftung der Ansaugseite einer künstlich kommutierten Hydraulikpumpe
BR112022013495B1 (pt) 2020-01-23 2023-03-14 Hess Corporation Conjunto de bomba submersível para transferência de um meio de fluido com baixa viscosidade

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481964A2 (fr) 1988-11-24 1992-04-22 Nippondenso Co., Ltd. Pompe haute pression à débit variable

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GB8703419D0 (en) * 1987-02-13 1987-03-18 Lucas Ind Plc Fuel injection pump
US5230613A (en) * 1990-07-16 1993-07-27 Diesel Technology Company Common rail fuel injection system
DE4206883A1 (de) * 1992-03-05 1993-09-09 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
US5577892A (en) * 1993-11-26 1996-11-26 Mercedes Benz Ag Method of injecting fuel including delayed magnetic spill valve actuation
US5538403A (en) * 1994-05-06 1996-07-23 Cummins Engine Company, Inc. High pressure pump for fuel injection systems
JPH08303325A (ja) * 1995-05-01 1996-11-19 Aisan Ind Co Ltd 高圧燃料ポンプ用流量制御弁の制御方法
DE19644915A1 (de) * 1996-10-29 1998-04-30 Bosch Gmbh Robert Hochdruckpumpe

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Publication number Priority date Publication date Assignee Title
EP0481964A2 (fr) 1988-11-24 1992-04-22 Nippondenso Co., Ltd. Pompe haute pression à débit variable

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100514275B1 (ko) * 1996-10-29 2005-11-25 로베르트 보쉬 게엠베하 고압펌프
EP1477665A2 (fr) * 1999-02-09 2004-11-17 Hitachi, Ltd. Pompe d'alimentation en combustible à haute pression pour moteur à combustion interne
EP1477665A3 (fr) * 1999-02-09 2005-02-23 Hitachi, Ltd. Pompe d'alimentation en combustible à haute pression pour moteur à combustion interne
EP1657432A1 (fr) * 1999-02-09 2006-05-17 Hitachi, Ltd. Pompe d'alimentation en combustible à haute pression pour moteur à combustion interne
US7540274B2 (en) 1999-02-09 2009-06-02 Hitachi, Ltd. High pressure fuel supply pump for internal combustion engine
FR2793283A1 (fr) * 1999-05-07 2000-11-10 Leduc Rene Hydro Sa Procede permettant de fournir un debit variable de liquide a tres haute pression et pompe pour la mise en oeuvre de ce procede
EP1306553A2 (fr) * 2001-10-27 2003-05-02 Robert Bosch Gmbh Pompe à carburant, système de distribution, procédé d'exploitation dudit système et moteur à combustion interne
EP1306553A3 (fr) * 2001-10-27 2004-08-04 Robert Bosch Gmbh Pompe à carburant, système de distribution, procédé d'exploitation dudit système et moteur à combustion interne
EP1898085A2 (fr) 2005-03-11 2008-03-12 Hitachi, Ltd. Mécanisme de commande électromagnétique et pompe d'alimentation en carburant haute pression
EP1898085A3 (fr) * 2005-03-11 2008-05-21 Hitachi, Ltd. Mécanisme de commande électromagnétique et pompe d'alimentation en carburant haute pression
US7398768B2 (en) 2005-03-11 2008-07-15 Hitachi, Ltd. Electromagnetic drive mechanism and a high-pressure fuel supply pump
EP1701031A1 (fr) * 2005-03-11 2006-09-13 Hitachi, Ltd. Un mécanisme d'entraînement électromagnétique d'une pompe d'approvisionnement en carburant à haute pression
US7757663B2 (en) 2005-03-11 2010-07-20 Hitachi, Ltd. Electromagnetic drive mechanism and a high-pressure fuel supply pump
WO2012038196A1 (fr) * 2010-09-20 2012-03-29 Robert Bosch Gmbh Soupape d'aspiration commandée
WO2013127545A1 (fr) * 2012-03-01 2013-09-06 Robert Bosch Gmbh Pompe à carburant
DE102013225390A1 (de) 2013-12-10 2015-06-11 Robert Bosch Gmbh Verfahren zum Betreiben einer Kraftstoffhochdruckpumpe einer Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE102013225418A1 (de) 2013-12-10 2015-06-11 Robert Bosch Gmbh Verfahren zum Betreiben einer Kraftstoffhochdruckpumpe einer Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
CN106555745A (zh) * 2015-09-25 2017-04-05 中国石油化工股份有限公司 液控先导式水力自动调压注水泵

Also Published As

Publication number Publication date
DE19644915A1 (de) 1998-04-30
KR19980032334A (ko) 1998-07-25
KR100514275B1 (ko) 2005-11-25
EP0840009B1 (fr) 2003-10-15
DE59710857D1 (de) 2003-11-20
EP0840009A3 (fr) 1999-12-01
US6116870A (en) 2000-09-12
JPH10141177A (ja) 1998-05-26

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