EP1234975A3 - High pressure piston cylinder unit - Google Patents

High pressure piston cylinder unit Download PDF

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Publication number
EP1234975A3
EP1234975A3 EP02405048A EP02405048A EP1234975A3 EP 1234975 A3 EP1234975 A3 EP 1234975A3 EP 02405048 A EP02405048 A EP 02405048A EP 02405048 A EP02405048 A EP 02405048A EP 1234975 A3 EP1234975 A3 EP 1234975A3
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
fuel supply
cylinder unit
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.)
Granted
Application number
EP02405048A
Other languages
German (de)
French (fr)
Other versions
EP1234975A2 (en
EP1234975B1 (en
Inventor
Roland Alder
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.)
Wartsila NSD Schweiz AG
Original Assignee
Wartsila NSD Schweiz AG
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 Wartsila NSD Schweiz AG filed Critical Wartsila NSD Schweiz AG
Priority to EP02405048A priority Critical patent/EP1234975B1/en
Publication of EP1234975A2 publication Critical patent/EP1234975A2/en
Publication of EP1234975A3 publication Critical patent/EP1234975A3/en
Application granted granted Critical
Publication of EP1234975B1 publication Critical patent/EP1234975B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil

Abstract

Hochdruck-Kolbenzylindereinheit (1), insbesondere Hochdruck-Förderpumpe für eine Brennkraftmaschine, umfassend einen Zylinder (3) mit Zylinderbohrung (3a) und einen darin in einer Verschiebungsrichtung (V) beweglich geführten Kolben (2), wobei der Zylinder (3) eine in die Zylinderbohrung (3a) mündende Brennstoffzuführöffnung (3b) aufweist, und wobei die Zylinderbohrung (3a) zwischen der Brennstoffzuführöffnung (3b) und dem niederdruckseitigen Ende (3d) eine Bohrungslänge (F) aufweist, und wobei der Kolben (2) oder die Zylinderbohrung (3a) zumindest eine erste und eine zweite Quernut (2c,2d) aufweist, welche in Verschiebungsrichtung (V) derart beabstandet sind, dass die erste Quernut (2c) über einen Verbindungskanal (2b) fluidleitend mit der Brennstoffzuführöffnung (3b) verbunden ist, und dass die zweite Quernut (2d) über einen Verbindungskanal (2c) fluidleitend mit dem niederdruckseitigen Ende (3d) verbunden ist.

Figure 00000001
High-pressure piston-cylinder unit (1), in particular high-pressure feed pump for an internal combustion engine, comprising a cylinder (3) with a cylinder bore (3a) and a piston (2) movably guided therein in a direction of displacement (V), the cylinder (3) being a the fuel supply opening (3b) opening into the cylinder bore (3a), and wherein the cylinder bore (3a) has a bore length (F) between the fuel supply opening (3b) and the low-pressure side end (3d), and wherein the piston (2) or the cylinder bore ( 3a) has at least a first and a second transverse groove (2c, 2d), which are spaced in the direction of displacement (V) such that the first transverse groove (2c) is connected to the fuel supply opening (3b) in a fluid-conducting manner via a connecting channel (2b), and that the second transverse groove (2d) is fluidly connected to the low-pressure end (3d) via a connecting channel (2c).
Figure 00000001
EP02405048A 2001-02-26 2002-01-28 High pressure piston cylinder unit Expired - Lifetime EP1234975B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02405048A EP1234975B1 (en) 2001-02-26 2002-01-28 High pressure piston cylinder unit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01810197 2001-02-26
EP01810197 2001-02-26
EP02405048A EP1234975B1 (en) 2001-02-26 2002-01-28 High pressure piston cylinder unit

Publications (3)

Publication Number Publication Date
EP1234975A2 EP1234975A2 (en) 2002-08-28
EP1234975A3 true EP1234975A3 (en) 2004-08-11
EP1234975B1 EP1234975B1 (en) 2005-11-02

Family

ID=8183760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02405048A Expired - Lifetime EP1234975B1 (en) 2001-02-26 2002-01-28 High pressure piston cylinder unit

Country Status (7)

Country Link
EP (1) EP1234975B1 (en)
JP (1) JP4111716B2 (en)
KR (1) KR100773437B1 (en)
CN (1) CN1280537C (en)
DE (1) DE50204735D1 (en)
DK (1) DK1234975T3 (en)
PL (1) PL199298B1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006016702A1 (en) * 2006-04-08 2007-10-18 Man Diesel Se Piston pump for supplying fuel in fuel injection system of internal-combustion engine, has recesses provided in guiding area between pump cylinder and pump piston, where fuel is supplied into recesses in axial direction
JP4625789B2 (en) 2006-07-20 2011-02-02 日立オートモティブシステムズ株式会社 High pressure fuel pump
EP1881189B1 (en) * 2006-07-21 2014-10-29 Continental Automotive GmbH Piston-cylinder system and hydraulic compensation device
DE102006040468A1 (en) * 2006-08-29 2008-03-06 Man Diesel Se Lubricating piston pump for fuel injection device, particularly for application in common rail fuel injection device of internal combustion engine, pump housing in which pump cylinder is formed, and recess is provided in guiding area
JP4650403B2 (en) * 2006-11-27 2011-03-16 株式会社デンソー Supply pump
DE102007019909B4 (en) * 2007-04-27 2019-07-11 Man Energy Solutions Se Fuel pump with leakage grooves
JP4842293B2 (en) * 2008-04-02 2011-12-21 株式会社日本自動車部品総合研究所 Fuel injection valve
KR101400580B1 (en) * 2010-01-15 2014-07-01 현대중공업 주식회사 Injection Device for Fuel Injectiojn Pump
KR101219987B1 (en) 2011-04-28 2013-01-09 현대중공업 주식회사 Fuel injection pump with L.O groove on plunger surface
EP2530315A1 (en) * 2011-06-02 2012-12-05 Delphi Technologies Holding S.à.r.l. Fuel pump lubrication
EP2530316A1 (en) * 2011-06-02 2012-12-05 Delphi Technologies Holding S.à.r.l. Fuel pump lubrication
DE102012223334A1 (en) 2012-12-17 2014-06-18 Robert Bosch Gmbh Piston-cylinder unit
KR101450771B1 (en) * 2013-02-25 2014-10-16 한국기계연구원 A structure for preventing the surface wear of cylinder-piston, and piston pump
GB201402535D0 (en) * 2014-02-13 2014-04-02 Delphi Int Operations Luxembourg Sarl Fuel pump
DE102014010718B4 (en) * 2014-07-19 2020-03-19 Woodward L'orange Gmbh Piston pump for a fuel injection system
DE102015016314A1 (en) * 2015-12-15 2017-06-22 L'orange Gmbh piston pump
DE102017207044B4 (en) * 2017-04-26 2023-12-28 Vitesco Technologies GmbH High-pressure fuel pump for a fuel injection system
JP7465977B2 (en) 2020-08-04 2024-04-11 京セラ株式会社 Slider device, plunger pump, liquid delivery device and liquid chromatography device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT307808B (en) * 1971-04-09 1973-06-12 Friedmann & Maier Ag Injection pump
WO1989010479A1 (en) * 1988-04-22 1989-11-02 Hei-Tech B.V. High-pressure piston cylinder unit
WO1989011035A1 (en) * 1988-05-09 1989-11-16 Hei-Tech B.V. Plunger pump arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT307808B (en) * 1971-04-09 1973-06-12 Friedmann & Maier Ag Injection pump
WO1989010479A1 (en) * 1988-04-22 1989-11-02 Hei-Tech B.V. High-pressure piston cylinder unit
WO1989011035A1 (en) * 1988-05-09 1989-11-16 Hei-Tech B.V. Plunger pump arrangement

Also Published As

Publication number Publication date
JP2002276508A (en) 2002-09-25
DE50204735D1 (en) 2005-12-08
EP1234975A2 (en) 2002-08-28
CN1372074A (en) 2002-10-02
CN1280537C (en) 2006-10-18
JP4111716B2 (en) 2008-07-02
PL199298B1 (en) 2008-09-30
DK1234975T3 (en) 2005-12-05
KR20020070080A (en) 2002-09-05
PL352345A1 (en) 2002-09-09
KR100773437B1 (en) 2007-11-05
EP1234975B1 (en) 2005-11-02

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