WO2012139785A1 - Accumulateur de pression pour une unité hydraulique - Google Patents

Accumulateur de pression pour une unité hydraulique Download PDF

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Publication number
WO2012139785A1
WO2012139785A1 PCT/EP2012/052196 EP2012052196W WO2012139785A1 WO 2012139785 A1 WO2012139785 A1 WO 2012139785A1 EP 2012052196 W EP2012052196 W EP 2012052196W WO 2012139785 A1 WO2012139785 A1 WO 2012139785A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure accumulator
opening
housing
housing opening
accumulator
Prior art date
Application number
PCT/EP2012/052196
Other languages
German (de)
English (en)
Inventor
Mario Kuhl
Calin Petru Itoafa
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2012139785A1 publication Critical patent/WO2012139785A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic

Definitions

  • Pressure accumulator for a hydraulic unit in particular on an internal combustion engine, with a displaceably arranged in an opening of a housing accumulator piston which is on the one hand loaded by a hydraulic fluid and on the other hand supported on a compression spring, which in turn abuts a Federabstützblech, in the housing opening form or is attached non-positively.
  • a hydraulic unit with a generic pressure accumulator is known from DE-10 2009 01 1 983 A1.
  • the Federabstützblech based on a spring ring, which is installed in a matching groove in the housing opening.
  • the installation length between the non-pressurized basic position of the accumulator piston and the spring ring is thus fixed. Due to the tolerances of the components can be present between the pressure accumulators a strong dispersion of the opening force of the pressure accumulator, resulting in different, undesirable pressure conditions in the system.
  • the object of the invention is therefore to remedy the disadvantages described and to provide a storage structure available, is reduced in the deviations of the opening force or the opening pressure of the pressure accumulator to each other to a minimum, this being done with simple, inexpensive means.
  • the object of the invention is achieved, on the one hand, in that a groove is incorporated in the housing opening, the width of which is designed to accommodate different widths and / or different numbers of support rings. That's it possible to install in this groove different width and a different number of support rings to vary the support position of Federabstützbleches and thus adjust the opening force or a certain opening pressure of the pressure accumulator.
  • the Federab- support plate is slidably disposed in the housing opening to make the installation of the support rings with simple means can.
  • the spring support plate and / or a support element can be fixed non-positively in the housing opening at different depths in the axial direction of the pressure accumulator.
  • the spring support plate or the support element are pressed to a certain depth in order to influence the opening force or the opening pressure in the sense of an adjustment to constant values. So there is a variable offset depending on the required opening pressure of the pressure accumulator.
  • the determined for a given force of the compression spring length thereof as a measure of the width and / or number of support rings or as a measure of the Einpresstiefe of Federabstützbleches and / or the support element serve.
  • the pressure accumulator is advantageously in its hydraulic fluid-relieved end position with a defined in the housing opening sealing ring in operative connection.
  • the sealing ring can be inserted in a groove in the housing opening.
  • Figure 1 a partial section through a housing with a longitudinal section through a pressure accumulator and
  • FIG. 2 shows a detail of a housing with a section through a pressure accumulator in a different embodiment.
  • 1 denotes a housing in which a circular cylindrical housing opening 3 is incorporated, which is on the one hand open and on the other hand with a fluid line 4 in formation.
  • a storage piston 5 is slidably guided, whose end face is in operative connection with the fluid line 4.
  • a sealing ring 6 is inserted, which forms a seal with the accumulator piston 5 in its upper position.
  • the accumulator piston 5 is supported on a compression spring 7 which is guided in a spring support plate 8.
  • the pressure accumulator in its entirety is designated 2.
  • a groove 9 is incorporated which is designed to be particularly wide.
  • the width of the groove 9 is so large that support rings 10 and 1 1, which may be formed as spring washers, can be used, wherein the spring or support rings 10 and 1 1 have a different width.
  • the Federabstützblech 8 such overlap relative to the housing opening 3, that it is arranged non-positively in the housing opening 3.
  • the spring support plate 8 is pressed into different depth positions so far that with different depth positions. Hydraulic units and different pressure accumulators as possible the same opening force or the same opening pressure of the pressure accumulator 2 is present.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

L'invention concerne un accumulateur de pression (2) pour une unité hydraulique, en particulier dans un moteur à combustion interne, ledit accumulateur comportant un piston accumulateur (5) qui est monté de manière mobile dans une ouverture d'un logement (1) et qui peut être sollicité, sur une extrémité, par un fluide hydraulique et prend appui, avec l'autre extrémité, sur un ressort de compression (7) qui, pour sa part, est en appui sur une tôle de support de ressort (8) fixée dans l'ouverture de logement (3). Une rainure (9), dont la largeur est dimensionnée pour recevoir des bagues d'appui (10, 11) de différentes largeurs et/ou en nombre différent, est ménagée dans l'ouverture de logement (3), ou la tôle de support de ressort (8) et/ou un élément de support sont fixés à force dans l'ouverture de logement (3) à différentes profondeurs dans la direction axiale de l'accumulateur de pression (2).
PCT/EP2012/052196 2011-04-13 2012-02-09 Accumulateur de pression pour une unité hydraulique WO2012139785A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011007249.7 2011-04-13
DE102011007249A DE102011007249A1 (de) 2011-04-13 2011-04-13 Druckspeicher für eine Hydraulikeinheit

Publications (1)

Publication Number Publication Date
WO2012139785A1 true WO2012139785A1 (fr) 2012-10-18

Family

ID=45563062

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/052196 WO2012139785A1 (fr) 2011-04-13 2012-02-09 Accumulateur de pression pour une unité hydraulique

Country Status (2)

Country Link
DE (1) DE102011007249A1 (fr)
WO (1) WO2012139785A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6040713A (ja) * 1983-08-11 1985-03-04 Honda Motor Co Ltd 自動２輪車におけるエンジンのバルブ休止手段の作動制御装置
EP0341440A1 (fr) * 1988-05-07 1989-11-15 Robert Bosch Gmbh Dispositif de commande de soupape avec valve magnétique pour moteur à combustion interne
DE4343115A1 (de) * 1993-12-17 1995-06-22 Iav Motor Gmbh Zylinderkopf für eine ventilgesteuerte Brennkraftmaschine
EP1091097A1 (fr) * 1999-10-06 2001-04-11 C.R.F. Società Consortile per Azioni Ameliorations d'un dispositif de commande de soupape variable pour moteur à combustion interne
US20050229888A1 (en) * 2004-04-19 2005-10-20 Richard Vanderpoel Valve actuation system with valve seating control
DE102009011983A1 (de) 2009-03-05 2010-09-09 Schaeffler Technologies Gmbh & Co. Kg Hydraulikeinheit für einen Zylinderkopf einer Brennkraftmaschine mit hydraulisch variablem Gaswechselventiltrieb

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6040713A (ja) * 1983-08-11 1985-03-04 Honda Motor Co Ltd 自動２輪車におけるエンジンのバルブ休止手段の作動制御装置
EP0341440A1 (fr) * 1988-05-07 1989-11-15 Robert Bosch Gmbh Dispositif de commande de soupape avec valve magnétique pour moteur à combustion interne
DE4343115A1 (de) * 1993-12-17 1995-06-22 Iav Motor Gmbh Zylinderkopf für eine ventilgesteuerte Brennkraftmaschine
EP1091097A1 (fr) * 1999-10-06 2001-04-11 C.R.F. Società Consortile per Azioni Ameliorations d'un dispositif de commande de soupape variable pour moteur à combustion interne
US20050229888A1 (en) * 2004-04-19 2005-10-20 Richard Vanderpoel Valve actuation system with valve seating control
DE102009011983A1 (de) 2009-03-05 2010-09-09 Schaeffler Technologies Gmbh & Co. Kg Hydraulikeinheit für einen Zylinderkopf einer Brennkraftmaschine mit hydraulisch variablem Gaswechselventiltrieb

Also Published As

Publication number Publication date
DE102011007249A1 (de) 2012-10-18

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