EP1156209A2 - Dispositif de guidage pour systèmes hydrauliques à haute pression - Google Patents

Dispositif de guidage pour systèmes hydrauliques à haute pression Download PDF

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Publication number
EP1156209A2
EP1156209A2 EP01111698A EP01111698A EP1156209A2 EP 1156209 A2 EP1156209 A2 EP 1156209A2 EP 01111698 A EP01111698 A EP 01111698A EP 01111698 A EP01111698 A EP 01111698A EP 1156209 A2 EP1156209 A2 EP 1156209A2
Authority
EP
European Patent Office
Prior art keywords
structuring
control elements
guide surface
guide
elements according
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.)
Withdrawn
Application number
EP01111698A
Other languages
German (de)
English (en)
Other versions
EP1156209A3 (fr
Inventor
Wolfgang Bloching
Andreas Dr. Fath
Peter Hubl
Wendelin Kluegl
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1156209A2 publication Critical patent/EP1156209A2/fr
Publication of EP1156209A3 publication Critical patent/EP1156209A3/fr
Withdrawn legal-status Critical Current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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14

Definitions

  • the invention relates to control elements for high-pressure hydraulic systems, especially according to the preamble of the claim 1.
  • common rail injection systems In contrast to conventional injection systems, common rail injection systems have a quasi-stationary, high pressure at the injector, which corresponds to the peak pressure of conventional injection systems.
  • a valve control piston for controlling the valve needle is added to the injector of the common rail injection systems, both of which are sealed against a leakage space by a gap seal. Constantly high pressure on twice the number of gap seals results in large amounts of leakage, which have a negative impact on the overall efficiency of the common rail injection system.
  • this leakage is controlled by the smallest possible guide clearance of 1.5 to 2.5 ⁇ m between the valve needle and the valve body or valve control piston and the injector and by the largest possible guide length (> 10 mm) of the guide of the valve needle and valve spool.
  • the guide clearance is limited by manufacturing limits and by lubrication requirements and the guide length by the dimensions of the injector.
  • the invention has for its object the leakage of the injector to minimize a common rail injection system.
  • the task is solved by the characteristic features of claim 1.
  • the structuring for manufacturing reasons primarily on the moving guide surfaces is applied, causes a turbulent flow in the sealing gap, which an increased pressure drop in the same and thus reduced leakage.
  • by structuring the flow length that the leakage flow must flow through significantly increased. In this way the effective gap length becomes larger than the guide length, so that the leakage is reduced.
  • the moving guide surfaces have a carbon coating, with its selective Application at the same time structuring the moving Guide surfaces are carried out.
  • the carbon layer diminishes Friction and wear of the sliding guide surfaces.
  • the carbon can be targeted using appropriate masks be applied to the guide surfaces. The not coated Areas then form the desired structure is mapped on the guide surfaces without additional effort.
  • valve needle 1 shows a valve needle 1 with a needle guide 2 and a needle seat 3.
  • the needle guide 2 has a guide surface 4 with a structure.
  • the valve needle 1 is guided by a second, immovable guide surface 8, which is formed on the housing of the injection valve.
  • the structuring according to the invention works as follows:
  • the fuel pressure acting on a shoulder 6 of the valve needle 1 causes an axial leakage oil flow along the needle guide 2 in the sealing gap. This meets a circumferential transverse flow in the passages of the flat thread 5.
  • the turbulent flow that occurs leads to an increased pressure drop in the sealing gap and thus to a reduced leakage oil flow.
  • At least partially a guide surface has a coating, for example reduces friction and / or abrasion.
  • a coating for example reduces friction and / or abrasion.
  • the structuring at least partially from the Coating built up.
  • only the webs are made from the coating between the grooves.
  • the entire guide surface 4, 8 with the coating be covered.
  • a Material used that is at least partially carbon consists.
  • the guide surface 4 is preferably with a carbon layer 7 coated.
  • the structuring is designed as a carbon layer, so that the structuring when applying the carbon layer is applied to the guide surface 4.
  • the structuring with the carbon layer can also be based on the immobile guide surface 8, which is the movable guide surface 4 is assigned.
  • the structuring on the movable and the immovable guide surface 4, 8 formed.
  • the structuring also in the form of recesses of any surface and / or depth and number.
  • the structuring only has to perform the task of causing a leakage flow to occur between one flows along the first and second guide surfaces 4, 8 longer flow path and / or a more turbulent flow path than having to travel with flat guide surfaces.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP01111698A 2000-05-19 2001-05-14 Dispositif de guidage pour systèmes hydrauliques à haute pression Withdrawn EP1156209A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10024854 2000-05-19
DE2000124854 DE10024854C2 (de) 2000-05-19 2000-05-19 Ventilnadel und Ventilsteuerkolben von Injektoren

Publications (2)

Publication Number Publication Date
EP1156209A2 true EP1156209A2 (fr) 2001-11-21
EP1156209A3 EP1156209A3 (fr) 2003-03-05

Family

ID=7642812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01111698A Withdrawn EP1156209A3 (fr) 2000-05-19 2001-05-14 Dispositif de guidage pour systèmes hydrauliques à haute pression

Country Status (2)

Country Link
EP (1) EP1156209A3 (fr)
DE (1) DE10024854C2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2850712A1 (fr) * 2003-01-23 2004-08-06 Denso Corp Structure de coulissement pour tige a resistance amelioree a l'abrasion et injecteur
EP1498603A1 (fr) * 2003-07-16 2005-01-19 Wärtsilä Schweiz AG Piston pour une unité piston-cylindre à haute pression d'une soupape d'injection
FR2865505A1 (fr) * 2004-01-27 2005-07-29 Denso Corp Dispositif d'injection de carburant empechant l'abrasion
WO2008026438A1 (fr) * 2006-08-31 2008-03-06 Mitsubishi Heavy Industries, Ltd. Soupape d'injection de carburant
DE102011051904A1 (de) * 2011-07-18 2012-06-21 L'orange Gmbh Vorrichtung mit in einer Führungsbahn längsverschieblicher Hubstange
EP2487361A1 (fr) * 2011-02-14 2012-08-15 Caterpillar Motoren GmbH & Co. KG Aiguille d'injecteur pour injecteur de combustible et injecteur de combustible
WO2019011973A1 (fr) * 2017-07-12 2019-01-17 L'orange Gmbh Injection de carburant et système d'injection conçu pour un moteur à combustion interne

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005061781A1 (de) * 2005-12-23 2007-06-28 Schaeffler Kg Injektor eines Kraftstoff-Einspritzsystems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315556C1 (de) * 1983-04-29 1984-11-29 Goetze Ag, 5093 Burscheid Verschleissfeste Beschichtung
DE3932328A1 (de) * 1989-09-28 1991-04-11 Opel Adam Ag Verfahren zur bearbeitung von durch reibung hochbeanspruchten flaechen in brennkraftmaschinen und vorrichtung zur durchfuehrung des verfahrens
DE29605666U1 (de) * 1996-03-27 1996-05-30 Volkswagen Ag Bauteil im Bereich von Verbrennungsräumen
US6477940B1 (en) * 1998-03-26 2002-11-12 Mtu Moteren-Und Turbinen-Union Friedrichshafen Gmbh High-pressure piston cylinder unit
DE19843344A1 (de) * 1998-09-22 2000-03-23 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7118046B2 (en) 2003-01-23 2006-10-10 Denso Corporation Sliding structure for shaft member with improved abrasion resistance and injector
FR2850712A1 (fr) * 2003-01-23 2004-08-06 Denso Corp Structure de coulissement pour tige a resistance amelioree a l'abrasion et injecteur
KR101307563B1 (ko) * 2003-07-16 2013-09-12 베르트질레 슈바이츠 악티엔게젤샤프트 실린더부 내의 고압 피스톤용 피스톤
EP1498603A1 (fr) * 2003-07-16 2005-01-19 Wärtsilä Schweiz AG Piston pour une unité piston-cylindre à haute pression d'une soupape d'injection
CN100449140C (zh) * 2003-07-16 2009-01-07 瓦特西拉瑞士股份有限公司 气缸组件中的高压活塞的活塞
FR2865505A1 (fr) * 2004-01-27 2005-07-29 Denso Corp Dispositif d'injection de carburant empechant l'abrasion
DE102005003663B4 (de) * 2004-01-27 2015-09-03 Denso Corporation Kraftstoffeinspritzvorrichtungen mit vermindertem Verschleiß
US7367517B2 (en) 2004-01-27 2008-05-06 Denso Corporation Fuel injection device inhibiting abrasion
US7635098B2 (en) 2004-01-27 2009-12-22 Denso Corporation Fuel injection device inhibiting abrasion
US7654475B2 (en) 2006-08-31 2010-02-02 Mitsubishi Heavy Industries, Inc. Fuel injection valve
CN101365874B (zh) * 2006-08-31 2011-07-06 三菱重工业株式会社 燃料喷射阀
WO2008026438A1 (fr) * 2006-08-31 2008-03-06 Mitsubishi Heavy Industries, Ltd. Soupape d'injection de carburant
EP2487361A1 (fr) * 2011-02-14 2012-08-15 Caterpillar Motoren GmbH & Co. KG Aiguille d'injecteur pour injecteur de combustible et injecteur de combustible
WO2012110209A1 (fr) * 2011-02-14 2012-08-23 Caterpillar Motoren Gmbh & Co. Kg Aiguille d'injection pour injecteur de carburant, procédé de fabrication de l'aiguille d'injection et de l'injecteur de carburant
CN103562540A (zh) * 2011-02-14 2014-02-05 卡特彼勒发动机有限责任两合公司 用于燃料喷射器的喷嘴针阀、制造该喷嘴针阀的方法和燃料喷射器
CN103562540B (zh) * 2011-02-14 2016-04-13 卡特彼勒发动机有限责任两合公司 用于燃料喷射器的喷嘴针阀、制造该喷嘴针阀的方法和燃料喷射器
DE102011051904A1 (de) * 2011-07-18 2012-06-21 L'orange Gmbh Vorrichtung mit in einer Führungsbahn längsverschieblicher Hubstange
WO2019011973A1 (fr) * 2017-07-12 2019-01-17 L'orange Gmbh Injection de carburant et système d'injection conçu pour un moteur à combustion interne

Also Published As

Publication number Publication date
DE10024854A1 (de) 2001-11-22
DE10024854C2 (de) 2002-11-28
EP1156209A3 (fr) 2003-03-05

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