[go: up one dir, main page]

WO2010086057A1 - Distributeur hydraulique - Google Patents

Distributeur hydraulique Download PDF

Info

Publication number
WO2010086057A1
WO2010086057A1 PCT/EP2009/066601 EP2009066601W WO2010086057A1 WO 2010086057 A1 WO2010086057 A1 WO 2010086057A1 EP 2009066601 W EP2009066601 W EP 2009066601W WO 2010086057 A1 WO2010086057 A1 WO 2010086057A1
Authority
WO
WIPO (PCT)
Prior art keywords
control
section
valve
control piston
base portion
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.)
Ceased
Application number
PCT/EP2009/066601
Other languages
German (de)
English (en)
Inventor
Ali Bayrakdar
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and 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 and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2010086057A1 publication Critical patent/WO2010086057A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • F01L1/344—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • 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
    • F01L1/344—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—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 changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34426—Oil control valves
    • F01L2001/3443—Solenoid driven oil control valves

Definitions

  • the invention relates to a hydraulic directional control valve having a hollow valve housing and a control piston arranged displaceably therein, wherein the control piston has at least two axially offset control sections and at least a first base section which is arranged between the control sections, wherein outer surfaces of the control sections of the inner surface of the Valve housing are adapted and wherein between a outer surface of the first base portion and the inner surface of the valve housing, a cavity is formed.
  • Such hydraulic directional control valves for example proportional directional control valves, are used in internal combustion engines, for example for controlling hydraulic camshaft adjusters or shiftable cam followers.
  • the hydraulic valves consist of an electromagnetic actuator and a valve section.
  • the valve section represents the hydraulic section of the directional control valve, wherein at least one inlet connection, a working connection and a tank connection are formed on the latter.
  • Such a hydraulic valve is disclosed for example in DE 102 30 966 A1.
  • the hydraulic valve has a valve portion and an electromagnetic actuator.
  • the valve section consists of a hollow cylindrical risch formed valve housing and a axially displaceably arranged therein control piston.
  • the valve housing is arranged within a receiving opening of a magnetic yoke of the electromagnetic actuator and fixedly connected thereto.
  • On the outer lateral surface of the valve housing three pressure medium connections, one inlet connection and two working connections, are formed. Furthermore, an axial drain port is provided.
  • a control piston is arranged axially displaceable, wherein the control piston comprises a base body and two axially spaced-apart control sections.
  • the outer diameter of the control sections are adapted to the inner diameter of the valve housing and made larger than the outer diameter of the base body.
  • the control sections depending on the relative position of the control piston to the valve housing, the pressure medium connections can be selectively connected or disconnected.
  • the control sections partially cover the working ports designed as radial openings in the valve housing, whereby a pressure medium flow between one of the working ports and the inlet port is blocked and admitted to the drain port.
  • the other working connection communicates with the inlet connection, while a pressure medium flow between this working connection and the outlet connection is blocked.
  • the hydraulic section is configured separately from the electromagnetic actuator and accommodated in a cavity of a camshaft, wherein the hydraulic section rotates with the camshaft during operation of the internal combustion engine.
  • the actuator is fixedly attached to a cylinder head cover or cylinder head.
  • the positioning of the control piston is effected by an actuating element which comprises an armature and a ram rod connected thereto.
  • the adjusting movement of the armature by means of the push rod which is pressed into a receptacle of the armature, transmitted to the control piston of the valve section.
  • the control piston is formed in these embodiments as Drehbauteilteil. The production takes place by cutting material removal from a massive body. This leads to a high material usage and long production times and thus to high production costs.
  • the invention is therefore an object of the invention to provide a hydraulic directional control valve, whereby the production costs are minimized and whose manufacturing costs are to be reduced.
  • control piston comprises a first component, which is made by means of a chipless forming process of a metal sheet and on which at least one control section and at least a portion of the first base portion are formed.
  • the hydraulic directional control valve has a valve housing and a control piston arranged displaceably therein.
  • the valve housing and the control piston may be substantially hollow cylindrical.
  • the control piston can be moved, for example by means of an electromagnetic actuator in the axial direction within the valve housing.
  • the valve housing has at least one or two outlet connections, and in each case at least one inlet connection and one working connection, wherein the working connection (s) and the inlet connection or the outlet connection can be formed as a radial opening of the valve housing.
  • the control piston has a main body and at least two control sections, wherein the control sections of the boundary surface of the cavity of the valve housing are adapted.
  • the base body has at least one base portion, which is arranged between the axially offset from each other control portions.
  • the base portion is formed such that between this and the valve housing, a cavity is present.
  • the outer diameter of the base portion may be formed smaller than the inner diameter of the valve housing, while the outer diameter of the control sections correspond to the inner diameter of the valve housing.
  • control sections By means of the control sections, the pressure medium flows can be directed within the directional control valve between the inlet connection and the one or more working connections or between the one or more working connections and the drainage connection.
  • the control sections block the connection between different ports. This can be realized, for example, in that the control sections partially cover the working connections designed as radial openings.
  • the control piston is formed by at least one first, one-piece component, on which at least one control section and at least one section of the first base section are formed. It is proposed to produce this device by means of a chipless forming process from a metal sheet. In this case, a sheet of a pure metal or a metal alloy can be used.
  • a starting material for example, flat or tubular sheets can be used.
  • Preferred production processes are, for example, thermoforming, extrusion or expansion processes, such as hydroforming or roll coating processes.
  • the production by means of a chipless forming process requires less material compared to control pistons produced by machining. Furthermore, the time required for the production is significantly lower than that required for control pistons obtained by machining processes. The otherwise necessary post-processing steps for producing a satisfactory surface quality of the control piston omitted, since this is achieved automatically in the chipless forming process.
  • the production of the control piston is significantly simplified, the production times are shortened and reduced production costs. In one development of the invention, it is provided that both control sections and the entire first base section are formed on the first component.
  • control piston is formed from a single sheet metal component by means of a chipless forming process.
  • control piston with its control sections and the main body with its base sections, composed of a single sheet metal component.
  • sheet metal components are also components to understand that were made by means of chipless forming of tubular output components.
  • Such control pistons can be obtained by means of a single forming process. Additional assembly or post-processing steps are not required.
  • control piston on a second component which is made by means of a chipless forming process of a metal sheet and on which the other control portion and a further portion of the first base portion are formed.
  • the two components each carrying one of the control sections and a section of the first base section, are manufactured separately. After their production, the subsections are pushed over one another and the components are fastened to one another so that the desired shape of the control piston is produced.
  • the freedom of design is increased and even more complex structures can be realized easily and inexpensively. It can be provided that the formed on the first and second component portions of the first base portion at least partially overlap in the axial direction of the control piston and are positively connected to each other.
  • the contact surfaces of the formed on the first and second component portions of the first base portion are conical.
  • the oblique surfaces of the cones abut each other.
  • the partial sections of the first basic section formed on the first and second component are connected to one another in a material-locking and / or form-fitting manner.
  • the partial section of the first basic section formed on one of the components penetrates the region of the other component on which the control section is formed in the axial direction of the control piston and extends at least partially in the radial direction outward behind the penetrated control section ,
  • a positive protection against movement of the two components is realized against the mounting direction.
  • control piston has at least one further base section adjacent to one of the control sections, wherein a cavity is formed between an outer face of the second base section and the inner face of the valve housing.
  • the second base portion may serve, for example, as an engagement surface of a push rod, which transmits the actuating movement of the actuator to the control piston, by the formation of the cavity, this area can be used to direct the pressure medium.
  • the component or components are produced by means of a deep-drawing process.
  • FIG. 3 shows a longitudinal section through a second embodiment of a control piston
  • FIG. 4 shows a longitudinal section through a third embodiment of a control piston
  • FIG 5 shows a longitudinal section through a fourth embodiment of a control piston.
  • Figure 1 shows an inventive hydraulic directional control valve 1 using the example of a 4/3-way valve.
  • the directional control valve 1 has an actuating unit 2, for example an electromagnetic actuating unit 2, and a valve section 3, the valve section 3 being fixedly connected to the actuating unit 2.
  • Such directional control valves 1 are usually arranged in receptacles which are formed for example in a cylinder head, a cylinder head cover, a crankcase, a transmission housing or the like.
  • the valve section 3 is not connected to the control unit 2.
  • the valve section 3 is accommodated, for example, inside a consumer, for example a camshaft adjuster.
  • the adjusting unit 2 is arranged axially offset from the valve section 3, wherein the adjusting movement of the actuating unit 2 is transmitted to the valve section 3 by means of a push rod.
  • the valve section 3 has a substantially hollow cylindrical valve housing 4 and a substantially hollow cylindrical control valve. make up 5.
  • a plurality of pressure medium connections A, B, P are formed on the outer circumferential surface of the valve housing 4 .
  • the pressure medium connections A, B, P are formed as annular grooves which communicate via recesses 6 with the interior of the valve housing 4.
  • the opening of the valve housing 4 remote from the electromagnetic actuating unit 2 serves as a drain port T.
  • the middle pressure medium port P which serves as a supply port, communicates via a pressure medium line (not shown) with a pressure medium pump (also not shown).
  • the two outer pressure medium connections A, B serve as working connections, which communicate with pressure chambers of a consumer, for example a camshaft adjuster, not shown.
  • the drain port T communicates with a pressure medium reservoir, also not shown.
  • a control piston 5, which is shown enlarged in FIG. 2, is arranged axially displaceable.
  • This is formed substantially hollow cylindrical and has a base body 7, which comprises two base sections 8, 9, and two control sections 10.
  • the control sections 10 are formed like a web, wherein the outer diameter of the inner diameter of the valve housing 4 are adjusted. Between the control sections 10, the first base section 8 and the right of the right control section 10, the second base section 9 is arranged.
  • the outer diameter of the base sections 8, 9 are formed smaller than the inner diameter of the valve housing 4, so that between the base sections 8, 9 and the valve housing 4 cavities 11 are present in the form of annular grooves, which serve to guide the pressure medium within the directional control valve 1.
  • control piston 5 is provided on the side remote from the second base portion 9 with an axial opening 13.
  • the entire control piston 5, ie the control sections 10 and the base sections 8, 9, is formed as a one-piece component 14.
  • the production of the control piston 5 takes place by means of a chipless forming process, wherein a sheet metal component of a suitable metal or a suitable alloy, for example a steel sheet, is transferred without cutting into the desired shape.
  • a planar or tubular sheet-metal component can serve as the starting material.
  • a manufacturing process for example, deep-drawing or extrusion molding process into consideration.
  • a tubular component is widened in the region of the control sections 10 to be generated by means of a rolling or high pressure internal forming process.
  • the openings 12 can be formed, for example, by means of a stamping method.
  • material can be saved compared to the cutting methods described in the prior art (for example, the production as a rotary component).
  • the control piston 5 of the directional control valves 1 according to the invention can be produced with less time and thus higher clock frequency.
  • post-processing steps are necessary to ensure the required quality of the surface of the control piston 5. These post-processing steps are omitted in the case of forming control piston 5, since in these cases the surface quality already fulfills all requirements after the production process. Thus, the manufacturing costs and the manufacturing cost of the control piston 5 decrease significantly.
  • the control piston 5 is arranged axially displaceable within the valve housing 4.
  • the control piston 5 By energizing the actuator 2, the control piston 5 by means of a push rod 15 against the force of a spring element 16, which on the one hand on the valve housing 4 and on the other hand on the control piston 5 is supported, moved and held in any position between two end stops.
  • adjacent pressure medium connections A, B, P can be connected to one another.
  • the work connection A, B which is not connected to the feed connection P is simultaneously connected to the tank connection T.
  • one of the control sections 10 blocks the connection between the inlet port P and the respective valve. working port A, B, while the other control section 10 blocks the connection between the other working port A, B and the drain port T.
  • pressure medium is supplied to the inlet port P, which pressure medium passes via the recess 6 into the cavity 11 in the interior of the valve housing 4, which is delimited by the control sections 10 and the first base section 8.
  • the pressure medium reaches the first or second working port A, B and from there via a pressure medium line to the consumer.
  • pressure medium passes from the consumer to the other working port A, B and from there directly or via the openings 12 and the interior of the control piston 5 to the drain port T.
  • FIG. 3 shows a further embodiment of a control piston 5 of a directional control valve 1 according to the invention.
  • this consists of two components 14, 17, wherein a control section 10 is formed on each component 14, 17.
  • a partial section 18, 19 of the first basic section 8 is formed on each of the components 14, 17.
  • the partial section 18 of the first component 14 is partially disposed within the partial section 19 of the second component 17.
  • the sections 18, 19 are positively connected to one another in the region of their overlap. Due to the large overlap area of the sections 18, 19 it is ensured that the frictional connection has grown during the operation of the directional control valve 1, high pressure forces.
  • the components 14, 17 are manufactured separately and then joined. In this case, the first partial section 18 formed with radial oversize is pressed into the second partial section 19.
  • FIG. 4 shows a further embodiment of a control piston 5 of a directional control valve 1 according to the invention.
  • the partial section 18 of the first passes through 5
  • the portion of the first component 14 extends through the portion of the second component 17, on which the control portion 10 is formed, in the axial direction of the control piston 5.
  • part of the free end of the portion 18 extends radially outward. Shen through the openings 12 therethrough, whereby a positive connection between the two components 14, 17 is made.
  • This positive connection may be formed alternatively or in addition to the force-locking connection described with reference to FIG.
  • FIG. 5 shows a further embodiment of a control piston 5 of a directional control valve 1 according to the invention.
  • the partial sections 18, 19 are conical, so that the frictional connection takes place via the inclined surfaces of the partial sections 18, 19
  • control piston 5 Due to the design of the control piston 5 by means of two nested components 14, 17, the length of the control piston 5 can be made variable.
  • the length of the control piston 5 is determined by the insertion depth of the first section 18 in the second section 19.
  • control piston 5 can be made for different valves 1 with valve bodies 4 of different lengths.
  • each of the components 14, 17 illustrated in FIGS. 3 to 5 is manufactured analogously to one of the production methods described with respect to the control piston 5 from FIG. After their preparation, the components 14, 17 are joined.
  • the fixed connection of the components 14, 17, in addition to the force or positive locking methods already described also be realized by welding, soldering, gluing or crimping or by caulking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Housings (AREA)
  • Multiple-Way Valves (AREA)

Abstract

L'invention concerne un distributeur hydraulique (1) comprenant un corps de distributeur (4) creux et un tiroir (5) logé dans le corps de manière à pouvoir être déplacé, ledit tiroir (5) comportant au moins deux segments de commande (10) décalés axialement l'un par rapport à l'autre et au moins un premier segment de base (8) placé entre les segments de commande (10). Des surfaces extérieures des segments de commande (10) sont adaptées à la surface intérieure du corps de distributeur (4) et un espace creux (11) est réalisé entre une surface extérieure du premier segment de base (8) et la surface intérieure du corps de distributeur (4).
PCT/EP2009/066601 2009-01-28 2009-12-08 Distributeur hydraulique Ceased WO2010086057A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009006353.6 2009-01-28
DE200910006353 DE102009006353A1 (de) 2009-01-28 2009-01-28 Hydraulisches Wegeventil

Publications (1)

Publication Number Publication Date
WO2010086057A1 true WO2010086057A1 (fr) 2010-08-05

Family

ID=42026755

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/066601 Ceased WO2010086057A1 (fr) 2009-01-28 2009-12-08 Distributeur hydraulique

Country Status (2)

Country Link
DE (1) DE102009006353A1 (fr)
WO (1) WO2010086057A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016120551B4 (de) * 2016-10-27 2019-01-24 Pierburg Gmbh Magnetventil für eine Verbrennungskraftmaschine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576194A (en) * 1965-02-11 1971-04-27 Kaj Christensen Regulator valve
DE3149306A1 (de) * 1981-12-12 1983-06-23 Wabco Steuerungstechnik GmbH & Co, 3000 Hannover Wegeventil
EP0472910A1 (fr) * 1990-08-31 1992-03-04 Festo KG Bague d'étanchéité et vanne munie d'une telle bague
WO2004020796A1 (fr) * 2002-08-27 2004-03-11 Ina-Schaeffler Kg Electrovanne hydraulique, notamment vanne proportionnelle servant a commander un dispositif pour le reglage de l'angle de rotation d'un arbre a cames par rapport a un vilebrequin d'un moteur a combustion interne
EP1544525A1 (fr) * 2003-12-18 2005-06-22 INA-Schaeffler KG Electrovanne hydraulique
WO2006079382A1 (fr) * 2005-01-27 2006-08-03 Schaeffler Kg Soupape hydraulique electromagnetique
DE102006031517A1 (de) * 2006-07-07 2008-01-10 Schaeffler Kg Schalteinrichtung für eine druckölbetätigte Nockenwellenstellvorrichtung, sowie Montageverfahren zum Einbau derselben in eine Brennkraftmaschine
WO2010017875A1 (fr) * 2008-08-13 2010-02-18 Robert Bosch Gmbh Piston de commande pour soupapes à coulisse et son procédé de fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10230966A1 (de) 2002-07-10 2004-01-22 Ina-Schaeffler Kg Elektromagnetisches Hydraulikventil, insbesondere Proportionalventil zur Steuerung einer Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle einer Brennkraftmaschine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3576194A (en) * 1965-02-11 1971-04-27 Kaj Christensen Regulator valve
DE3149306A1 (de) * 1981-12-12 1983-06-23 Wabco Steuerungstechnik GmbH & Co, 3000 Hannover Wegeventil
EP0472910A1 (fr) * 1990-08-31 1992-03-04 Festo KG Bague d'étanchéité et vanne munie d'une telle bague
WO2004020796A1 (fr) * 2002-08-27 2004-03-11 Ina-Schaeffler Kg Electrovanne hydraulique, notamment vanne proportionnelle servant a commander un dispositif pour le reglage de l'angle de rotation d'un arbre a cames par rapport a un vilebrequin d'un moteur a combustion interne
EP1544525A1 (fr) * 2003-12-18 2005-06-22 INA-Schaeffler KG Electrovanne hydraulique
WO2006079382A1 (fr) * 2005-01-27 2006-08-03 Schaeffler Kg Soupape hydraulique electromagnetique
DE102006031517A1 (de) * 2006-07-07 2008-01-10 Schaeffler Kg Schalteinrichtung für eine druckölbetätigte Nockenwellenstellvorrichtung, sowie Montageverfahren zum Einbau derselben in eine Brennkraftmaschine
WO2010017875A1 (fr) * 2008-08-13 2010-02-18 Robert Bosch Gmbh Piston de commande pour soupapes à coulisse et son procédé de fabrication

Also Published As

Publication number Publication date
DE102009006353A1 (de) 2010-07-29

Similar Documents

Publication Publication Date Title
EP1924759B1 (fr) Soupape de distribution destinee a un dispositif pour modifier les temps de distribution d'un moteur a combustion
EP2870327B1 (fr) Dephaseur à ailettes oscillantes avec vanne de commande hydraulique
DE102004009074B3 (de) Gebauter Mehrfachnocken
DE10213554A1 (de) Solenoidventil
EP1752691B1 (fr) Vanne de commande et son procédé de fabrication
EP2362125A1 (fr) Elément d'actionnement d'une unité de réglage électromagnétique d'une soupape hydraulique
EP2370714B1 (fr) Unité de commande électromagnétique
WO2004020796A1 (fr) Electrovanne hydraulique, notamment vanne proportionnelle servant a commander un dispositif pour le reglage de l'angle de rotation d'un arbre a cames par rapport a un vilebrequin d'un moteur a combustion interne
DE19955507A1 (de) Nockenwellensteller für Brennkraftmaschinen
WO2013174531A1 (fr) Soupape de commande d'un déphaseur d'arbre à cames
WO2010086057A1 (fr) Distributeur hydraulique
EP3250796B1 (fr) Procédé d'assemblage d'un arbre à cames dans une unité modulaire
DE102005041395B4 (de) Hydraulisches Wegeventil
EP1024913B1 (fr) Procede et dispositif pour produire un arbre a partir d'un element tubulaire
EP3049646B1 (fr) Rotor pour dispositif de réglage d'arbre à cames, ensemble de pièces permettant de produire un rotor pour un dispositif de réglage d'arbre à cames et procédé permettant de produire un élément structural assemblé, de préférence un rotor pour un dispositif de réglage d'arbre à cames
WO2010066536A1 (fr) Élément d'actionnement d'une unité de commande électromagnétique d'une soupape hydraulique
DE102006042215A1 (de) Elektromagnetische Stelleinheit
EP1934437B1 (fr) Soupape de commande d'un regulateur de l'arbre a cames
AT521501B1 (de) Längenverstellbares Pleuel mit Pressverbindung
DE102011000591A1 (de) Zentralventil
DE102009049459A1 (de) Volumenspeicher
WO2007012393A1 (fr) Unite de commande electromagnetique
AT5934U1 (de) Nockenwelle mit einbuchtungen
EP2468432A1 (fr) Procédé de fabrication d'une coulisse d'accouplement, coulisse d'accouplement et moteur à combustion
WO2004082863A1 (fr) Procede de production d'un arbre a cames assemble

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09774662

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09774662

Country of ref document: EP

Kind code of ref document: A1