WO2014190979A1 - Dispositif de réglage d'arbre à cames - Google Patents

Dispositif de réglage d'arbre à cames Download PDF

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Publication number
WO2014190979A1
WO2014190979A1 PCT/DE2014/200086 DE2014200086W WO2014190979A1 WO 2014190979 A1 WO2014190979 A1 WO 2014190979A1 DE 2014200086 W DE2014200086 W DE 2014200086W WO 2014190979 A1 WO2014190979 A1 WO 2014190979A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure medium
rotor
stator
rotors
working chambers
Prior art date
Application number
PCT/DE2014/200086
Other languages
German (de)
English (en)
Inventor
Boris PÜTZ
Ali Bayrakdar
Original Assignee
Schaeffler Technologies Gmbh & 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 Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2014190979A1 publication Critical patent/WO2014190979A1/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
    • 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

Definitions

  • the invention relates to a camshaft Verstellelteinnchtung with the features of the preamble of claim 1.
  • Camshaft adjusting devices comprise a camshaft and a vane-cell adjuster which, in its basic construction, has a stator which can be driven by a crankshaft and a rotor which is connected in a rotationally fixed manner to the camshaft.
  • annular space is provided, which is divided by non-rotatably connected to the stator, radially inwardly projecting projections in a plurality of pressure chambers, each divided by a radially projecting from the rotor outwardly projecting wing in two working chambers opposite effective direction
  • the rotor is then adjusted relative to the stator and thus also the camshaft relative to the crankshaft in the direction of "early" or " late".
  • the working chambers are thereby limited by the lateral surfaces of the projections and the wings and by a first sealing surface on the rotor and a second sealing surface on the stator, against which the projections and the wings abut sealingly with their end faces
  • a central valve may be provided with a displaceable valve body having a plurality of control edges and Druckschkanaien through which the pressure medium as a function of the position of the valve body is selectively introduced into the Häkammem Further, the central valve serves to clamp the rotor with the camshaft, in which the central valve rests externally with a radial flange on an outer side surface of the rotor and is screwed with a threaded portion in an internal thread of the camshaft This creates a frictional connection between the camshaft and the rotor or between the rotor and the central valve, through which the adjusting forces required for the adjustment of the camshaft 2 are transmitted.
  • the central valve is also referred to in this form as the central screw
  • a second rotor is provided with which the rotational angle of a second camshaft relative to the stator or the camshaft is adjustable. wherein the camshafts are arranged one inside the other and concerted.
  • camshaft arrangements are also known from Xam in Cam u - camshafts, for the adjustment of the camshafts two separate separate valves are provided, which are independently acted upon by a pressure medium.
  • the invention has the object to provide a cost camshaft adjusting device for independent adjustment of the rotation angle of two cam worlds with respect to a stator, which also with a lower cost should be mountable.
  • the object of the invention is achieved by a camshaft adjusting device having the features of claim 1. More preferred embodiments of the invention can be taken from the subclaims, the figures and the associated description.
  • the working chambers of the two rotors be replaced by a common central valve can be acted upon with pressure medium, through which the working chambers of the rotors can be acted upon depending on the position of the valve body optionally with pressure medium.
  • the proposed solution can considerably simplify the structural design and reduce the manufacturing costs and the assembly costs. Furthermore, the costs can be reduced, since only one actuator is required to adjust both rotors 3
  • the structural design can be simplified werter by at least one pressure medium channel is provided in the central valve through which the working chambers of a first effective direction of a first rotor acted upon by pressure medium or with a pressure medium reservoir, while the working chambers of the opposite second effective direction of the same rotor through one vent hole is connected to the environment.
  • the proposed solution does not require that the working chambers of the second direction of action be connected to the pressure medium piping system via the central valve.
  • the working chambers of the first direction of action which can be acted upon by pressure medium and be connected to the pressure medium reservoir, the Häkammem whose volume is increased for adjusting the first rotor in the direction of the drive rotational movement of the stator During the rotational movement of the camshaft act on the camshaft Due to the proposed pressurizing the Häkammem, which increase their volume in an adjustment of the rotor in the direction of rotation, the rotor is actively rotated at a Druckmrttelbeaufschlagung against the effective camshaft alternating torques.
  • the first rotor is biased in a first direction of rotation by means of a spring. and the Arbertskammem. which are acted upon by pressure medium and can be connected to the pressure medium reservoir, which are Arbertskammem whose volume is increased to adjust the first rotor against the first direction of rotation of the first rotor by the spring biasing the rotor in one direction and at a pressure medium loading of the Arbertskammem against the acting Twisted spring force.
  • the pressure medium channels are arranged on the Zentratventll such that the working chambers of a first effective direction of a first rotor in a first stop position of the valve body and the working chambers of the other second effective direction of the same rotor can be acted upon in a second stop position of the valve body with pressure medium, and that the Arbertskammem of each other second rotor in at least one between the first and the second stop position arranged intermediate position of the valve body can be acted upon with pressure medium
  • the rotational movement of the first rotor can thereby be controlled very easily by the valve body in each case in the first or second Stop position is moved.
  • the movement of the second rotor is then effected by displacement of the valve body between the stop positions, wherein the angular position of the first rotor to the stator is not changed. 5
  • FIG. 1 shows a camshaft adjusting device according to the invention
  • FIG. 1 shows a sectional view of a camshaft adjusting device according to the invention with a vane-type adjuster with two rotors 1 and 3 and a stator 2.
  • the stator 2 comprises radially on the outside a driving surface, such as a toothing, over which the vane tine translator engages Endless tension means is driven.
  • the drive can take place via a crankshaft of an internal combustion engine or another drive shaft.
  • the stator 2 itself has a plurality of radially inwardly projecting projections which extend up to corresponding radially inner sealing surfaces of the rotors 1 and 3 and thereby each divide an annular space existing between the rotors 1 and 3 into a plurality of pressure chambers the rotor 1 is provided with a plurality of vanes which extend up to a second sealing surface of the stator 2 and thereby further divide the pressure chambers formed into two oppositely acting arc chambers.
  • the working chambers 4 of the rotor 3 can be seen the other working chambers of the rotor 3 and the Häkammem of the rotor 1 can not be seen.
  • the working chambers can be acted upon by a respective pressure medium medium through each emen pressure medium channel 16,14 and 22 in the rotors 1 and 3 via a central pressure medium circuit.
  • the pressure medium is introduced into the working chambers of a first effective direction
  • the rotor 1 or 3 is rotated relative to the stator 2, wherein the volume of these Anlagenkammem is larger and the volume of befindlichem on the other side of the wing 6 working chamber of a second effective direction is smaller It is there »Druckmrtte! from the not acted upon by pressure medium working chambers of the second direction of action, the volume is smaller, returned to a Druckmrttelreservoir T.
  • the rotor 1 is then rotated either in the direction of rotation of the stator 2 or counter to the direction of rotation of the stator 2 with respect to this
  • a central valve 8 in a through hole 11 of the rotors 1 and 3 which has a base body 9, a valve core 30 and a in the valve insert 30 slidably guided, spring-loaded valve body 7 includes.
  • a complex pressure medium side system of pressure medium channels and pressure medium chambers is further provided by which the inflow and outflow of the pressure medium is controlled in response to the valve body.
  • the first rotor 3 and the second rotor 1 are arranged parallel to one another and are rotatably mounted in the stator 2.
  • the second rotor 1 is clamped to the first camshaft 17 via the central valve 6, in which the central valve 6 is threaded with a threaded portion 10 into an internal thread first camshaft 17 is screwed. and thereby clamps the second rotor 1 between the end face of the first camshaft 17 and a radial flange 8 provided on the front side on the central screw 6.
  • the first rotor 3 is connected in a rotationally fixed manner to the first camshaft 5 by the first camshaft 5 having a threaded section 29 Internal thread of the first rotor 3 is screwed.
  • the first and second camshaft 17 and 5 are both tubular and inserted into each other and can be adjusted by the rotationally fixed connection with the rotors 1 and 3 each individually relative to the stator 2 in the angular orientation
  • the central valve 6 comprises a tubular main body 9 with a central through-opening 31 in which a valve insert 30 with a therein 7 ordered, slidably guided valve body 7 is arranged.
  • the valve body 7 is spring-loaded by means of a spring 32 in the direction of a stop position in the right-hand stop position and secured against slipping by a securing ring 33.
  • Both the valve insert 30 and the valve body 7 are tubular, so that the Zerrtral valve 6 has a central passage opening 27
  • the pressure medium flows to the central valve 6 from the pressure medium pump "P * through the central passage opening 31 in the illustration of FIG. 2 from the right. further through a complex Oruckschteits stem of the central valve 6 in the working chambers 4 and out of these and then through the central passage opening 27 of the Ventilkörpefs 7 back to the pressure medium reservoir "T back
  • the pressure medium control system of the central valve 6 comprises a complex structure comprising a plurality of pressure medium channels 13, 18 and 19 in the main body 11, a pressure medium channel 15, a plurality of pressure medium chambers 20 and 21 and pressure medium lines 24 and 25 in the valve core 30 and finally a pressure medium channel 23 and two pressure medium chambers 26 and 28 in the valve body 7
  • pressure medium channel, pressure medium line and Druckmrttelhunt should be understood in the context of the invention as cavities, which are adapted to direct the pressure medium from one point to another point
  • the pressure medium chambers as grooves or area depressions be formed on the surfaces of the components over which the pressure medium is deliberately distributed or can open into the plurality of spatially spaced Druckmrtteltechnische
  • the pressure medium control system is explained in more detail below with reference to various positions of the valve body 7 shown in FIGS. 2 to 5, wherein in the diagram in the figures, the volume flow of the pressure medium can be recognized by the dashed line over the displacement path of the valve body 7, which currently in the position of the valve body 7 respectively flows through the central valve 6. 8th
  • the valve body 7 is in the left-side first stop position on the securing ring 33, in which the through the opening 31 supplied pressure medium flow, P "by a non-illustrated structure of control edges on the central valve 6 in the pressure medium chamber 26th
  • the pressure medium flows further into the pressure medium chamber 21 of the valve core 30 and then through the pressure medium channels 19 and 22 into the working chambers " B" between the second rotor 1 and the stator 2.
  • the pressure medium flows out of the working chambers .A * via the pressure medium channels 14, 13, 15 and 23 into the through-opening 27 of the valve body 7 and from there into the pressure medium reservoir "T ⁇ in the illustrated arrow direction.
  • the second rotor 1 is rotated in a first direction of rotation relative to the stator 2.
  • the pressure chambers "C" between the first rotor 3 and the stator 2 are not pressurized in this position, so that the position of the first rotor 3 is not changed relative to the stator 2.
  • valve body 7 In the position of the valve body 7 shown in FIG. 3, the latter was displaced to the right against the spring exerted by the spring 32 by an actuator, not shown. By the displacement of the valve body 7, the pressure medium chamber 21 and the Druckmittefcanal 15 through the valve body. 7 closed radially inward, so that the second rotor 1 is not further adjusted relative to the stator 2.
  • the pressure medium line 24 of the valve insert 30 coming from the pressure medium chamber 20 has flow technology connected to a section of a pressure medium line of the valve body 7, so that the pressure medium from the working chambers "C" of the first rotor 3 through the pressure medium passages 16, 12 and 18 via the pressure medium chamber
  • the first rotor 3 can automatically rotate relative to the stator 2 on account of the camshaft alternating torques acting on the first camshaft 17.
  • the working chambers of the other effective direction which are arranged on the respective other sides of the blades of the first rotor 3, are practically adapted by vent openings (not shown). 9 siv switched so that they do not hinder the rotational movement of the first rotor 3 Ole rotational movement of the first rotor 3 m can also be effected in this case by a spring acting on the first rotor 3 and / or supported.
  • valve body 7 In the position of the valve body 7 shown in FIG. 4, the latter was further displaced against the spring 32 to the right. The displacement of the valve body 7 interrupted the flow connection created via the pressure medium 24 and instead established a flow connection between the passage 31 to a pressure medium pump "P * and the pressure medium chamber 28 created by a Druckstofflertung 25.
  • valve body 7 In the position shown in FIG. 5, the valve body 7 has been further displaced by the actuator into a second right-side stop position. In this position of the valve body 7, the pressure medium lines 25 and 24 are interrupted in terms of flow, so that the pressure medium can neither flow away nor flow into it from the Arbert chambers "C".
  • the pressure medium chamber 26 is fluidically connected to the pressure medium channels 15, 13 and 14, respectively, so that the pressure medium * supply flows into the working chambers _, there during from the working chambers "B * simultaneously over the shared in the discharge pressure fluid chamber 21 back to the pressure medium reservoir” may flow V in this position of the valve body 7, the second Rotor 1 counter to the direction of rotation of the second rotor 1 in the first Impact position of the VenNkdrpers 7 (see Fi 2) with respect to the stator 2 twisted
  • the proposed solution allows both rotors 1 and 3 to be adjusted using a single centrate valve 6.
  • the adjustment movement of the second rotor 1 is brought about by the movement of the valve body 7 into one of the stop positions, while the adjustment of the first rotor 3 is effected by the movement of the valve body 7 is effected in one of the intermediate positions shown in Figures 3 and 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un dispositif de réglage d'arbre à cames pourvu d'un dispositif de réglage de palettes comprenant - un stator (2) pouvant être entraîné en rotation, et - deux rotors (1, 3) montés de manière à pouvoir tourner dans le stator (2), - une pluralité de parties saillantes (3) faisant saillie radialement vers l'intérieur et divisant respectivement un espace annulaire entre le stator (2) et un des rotors (13) en plusieurs chambres de pression étant disposées sur le stator (2) , et - une pluralité de palettes faisant radialement saillie vers l'extérieur et divisant les chambres de pression en chambres de travail (4 A, B, C) agissant dans le sens opposé étant disposées sur chacun des rotors (1, 3), -les chambres de travail (4A, B, C), pour le réglage des rotors (1, 3) par rapport au stator (2), pouvant être exposées sélectivement à un fluide sous pression au moyen d'une soupape centrale (6) dans laquelle un corps de soupape (7) est guidé de manière à pouvoir être coulissé, - les chambres de travail (4A, B, C) des deux rotors (1, 3) pouvant être exposées à un fluide sous pression au moyen d'une soupape centrale (8) commune par l'intermédiaire de laquelle les chambres de travail (4A, B, C) des rotors (1, 3) peuvent être exposées sélectivement à un fluide sous pression en fonction de la position du corps de soupape (7).
PCT/DE2014/200086 2013-05-28 2014-02-26 Dispositif de réglage d'arbre à cames WO2014190979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013209865.0 2013-05-28
DE102013209865.0A DE102013209865B4 (de) 2013-05-28 2013-05-28 Nockenwellenverstelleinrichtung

Publications (1)

Publication Number Publication Date
WO2014190979A1 true WO2014190979A1 (fr) 2014-12-04

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Application Number Title Priority Date Filing Date
PCT/DE2014/200086 WO2014190979A1 (fr) 2013-05-28 2014-02-26 Dispositif de réglage d'arbre à cames

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DE (1) DE102013209865B4 (fr)
WO (1) WO2014190979A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016214503B4 (de) 2015-10-28 2022-03-10 Schaeffler Technologies AG & Co. KG Nockenwellenverstellvorrichtung
DE102018115167B4 (de) 2018-06-25 2024-07-25 Schaeffler Technologies AG & Co. KG Nockenwellenverstellvorrichtung mit einem kompakten Aufbau für einen trockenen Riementrieb einer Brennkraftmaschine und Montageverfahren der Nockenwellenverstellvorrichtung
JP7124775B2 (ja) 2019-03-25 2022-08-24 株式会社デンソー 作動油制御弁およびバルブタイミング調整装置

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346448A1 (de) * 2003-10-07 2005-06-09 Daimlerchrysler Ag Nockenwellenversteller für eine Brennkraftmaschine
US20050226736A1 (en) * 2004-04-13 2005-10-13 Lancefield Timothy M Variable phase drive mechanism
GB2432645A (en) * 2005-11-28 2007-05-30 Mechadyne Plc Variable phase drive coupling
US20090173297A1 (en) * 2008-01-04 2009-07-09 Hilite International Inc. Variable valve timing device
DE102008033230A1 (de) * 2008-01-04 2009-07-09 Hydraulik-Ring Gmbh Doppelter Nockenwellenversteller in Schichtaufbau
US20090314235A1 (en) * 2008-06-18 2009-12-24 Gm Global Technology Operations, Inc. Hydraulic Control System for Engine Cam Phasing
DE102009041755A1 (de) * 2008-10-09 2010-04-15 Schaeffler Kg Doppeltes unabhängiges Verstellsystem zum unabhängigen Verstellen der Ansaug- und der Ausstoßnockenerhebungen einer konzentrischen Nockenwellenanordnung
GB2467333A (en) * 2009-01-30 2010-08-04 Mechadyne Plc Single camshaft phaser and camshaft for i.c. engines
EP2500532A1 (fr) * 2011-03-16 2012-09-19 Hilite Germany GmbH Déphaseur à moteur oscillant
DE102011007883A1 (de) * 2011-04-21 2012-10-25 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
WO2013032842A1 (fr) * 2011-08-30 2013-03-07 Borgwarner Inc. Conception du passage pour l'huile d'un déphaseur ou d'un déphaseur double

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2487227A (en) * 2011-01-14 2012-07-18 Mechadyne Plc Spool valve for simultaneous control of two output members

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346448A1 (de) * 2003-10-07 2005-06-09 Daimlerchrysler Ag Nockenwellenversteller für eine Brennkraftmaschine
US20050226736A1 (en) * 2004-04-13 2005-10-13 Lancefield Timothy M Variable phase drive mechanism
GB2432645A (en) * 2005-11-28 2007-05-30 Mechadyne Plc Variable phase drive coupling
US20090173297A1 (en) * 2008-01-04 2009-07-09 Hilite International Inc. Variable valve timing device
DE102008033230A1 (de) * 2008-01-04 2009-07-09 Hydraulik-Ring Gmbh Doppelter Nockenwellenversteller in Schichtaufbau
US20090314235A1 (en) * 2008-06-18 2009-12-24 Gm Global Technology Operations, Inc. Hydraulic Control System for Engine Cam Phasing
DE102009041755A1 (de) * 2008-10-09 2010-04-15 Schaeffler Kg Doppeltes unabhängiges Verstellsystem zum unabhängigen Verstellen der Ansaug- und der Ausstoßnockenerhebungen einer konzentrischen Nockenwellenanordnung
GB2467333A (en) * 2009-01-30 2010-08-04 Mechadyne Plc Single camshaft phaser and camshaft for i.c. engines
EP2500532A1 (fr) * 2011-03-16 2012-09-19 Hilite Germany GmbH Déphaseur à moteur oscillant
DE102011007883A1 (de) * 2011-04-21 2012-10-25 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
WO2013032842A1 (fr) * 2011-08-30 2013-03-07 Borgwarner Inc. Conception du passage pour l'huile d'un déphaseur ou d'un déphaseur double

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Publication number Publication date
DE102013209865B4 (de) 2016-04-07
DE102013209865A1 (de) 2014-12-04

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