EP1212517B1 - Nockenwellenversteller für brennkraftmaschinen - Google Patents

Nockenwellenversteller für brennkraftmaschinen Download PDF

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Publication number
EP1212517B1
EP1212517B1 EP00964123A EP00964123A EP1212517B1 EP 1212517 B1 EP1212517 B1 EP 1212517B1 EP 00964123 A EP00964123 A EP 00964123A EP 00964123 A EP00964123 A EP 00964123A EP 1212517 B1 EP1212517 B1 EP 1212517B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
annular
clamping screw
slide valve
hole
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.)
Expired - Lifetime
Application number
EP00964123A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1212517A1 (de
Inventor
Wolfgang Speier
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.)
Daimler AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1212517A1 publication Critical patent/EP1212517A1/de
Application granted granted Critical
Publication of EP1212517B1 publication Critical patent/EP1212517B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F01L2001/3443—Solenoid driven oil control valves

Definitions

  • the invention relates to a camshaft adjuster for Internal combustion engine according to claim 1.
  • From DE 196 54 926 A1 is a driving a camshaft from the crankshaft of an internal combustion engine lying
  • Camshaft adjuster known to be coaxial with the camshaft is arranged and connected to the camshaft via a central Clamping screw is connected, in turn, as a valve housing receives an axially displaceable spool, via the supply connections of the camshaft adjuster position-dependent with the adjuster-side connections are to be connected as consumer connections.
  • the connection way runs over a circumference on the spool provided annular space which is bounded by two ring lands and depending on the axial position of the spool with the pressure sides or the return side supply connection connected is.
  • the return leads via a ring against annulus offset axially, via a ring land delimited annular channel, in turn on a central return bore of the Spool opens, which points towards the Camshaft to the receiving bore for the spool subsequent, by a front side of the spool limited volume, a return spring for the Spool receiving space of the valve housing opens.
  • the screwed into the camshaft threaded part of Clamping screw is axially penetrated by a return hole, the over a transverse bore in the camshaft to a ⁇ lsammelraum out, which here through the oil sump of the Internal combustion engine is formed, with which the camshaft adjuster internal combustion engine receiving chain case connected is.
  • Such camshaft adjusters should be as small as possible Stell147n high adjustment speeds and an exact Enable positioning, with as little as possible Space requirement, in particular also the shortest possible length. These factors are also essential due to the conduction paths determines, where the return side and the drain Critical to the oil reservoir upstream line area is because over a possible backlog the response time can be changed and unwanted vibrations occur can.
  • Camshaft adjuster shows the claim 1 in terms a solution to the problems raised, in which, regardless of the direction of the control spool, Repercussions of running over the spool Working medium on the behavior of the spool almost are completely avoided and also a simplified course the supply lines is achieved, and this at simplified structural design.
  • valve-side connection to the pressure-side supply connection in an advantageous manner in the valve too integrate, so that in this regard no additional intervention in the camshaft or the bearing of the camshaft in the camshaft bearing are required.
  • the camshaft is called, in the housing a not shown internal combustion engine or in their Cylinder head is mounted, in the figure, the one End wall 2 of the housing or the cylinder head assigned Warehouse partially shown and designated 3.
  • the Camshaft 1 is provided with a central oil hole 4 and carries in its over the end wall 2 protruding end portion a mounting flange 5, against which only here partial camshaft adjuster 6 shown clamped and is centered.
  • the camshaft 1 is integrally in the Mounting flange over.
  • the mounting flange 5 is part of an end piece of a camshaft 1, the as a built camshaft continues in a camshaft tube, which carries the cam in a corresponding assignment.
  • crankshaft adjuster 6 With the outer body, not shown, of the camshaft adjuster 6 is the crankshaft of not shown Internal combustion engine rotationally fixed, for example by connected to a chain drive, so by depending on from the desired adjustment direction taking place pressurization the working chambers and the corresponding twisting the inner body 7 relative to the outer body the Changed phase position of the camshaft 1 relative to the crankshaft can be.
  • the inner body 7 is against the flange 5 of the camshaft first centered about a clamping screw 11 and axially braced.
  • the clamping screw 11 has this head end a clamping collar 12, the inner body 7 in the radially inner region engages and on the radially outwardly the side wall. 9 adjoined.
  • the clamping screw 11 engages in the direction of the oil hole 4 of the camshaft 1 in a designed as a threaded bushing 15 section the camshaft 1, against which the clamping screw 11 over their lying in extension of the shaft 13 threaded neck 16 is bolted, the outer diameter opposite that of the shaft 13 is reduced.
  • the in the as Threaded bushing 15 designed end portion of the camshaft. 1 screwed threaded neck 16 forms a frontal conclusion the oil hole 4 of the camshaft 1 and is also to the camshaft 1 concentric.
  • the clamping screw 11 is about its shaft 13 and this with respect to the clamping collar 12 upstream head portion 17th hollow and forms a cylindrical housing 18, the opposite to the head portion 17 by a transition from the shaft 13 in the threaded neck 16 lying bottom 19th closed at the front.
  • the housing 18 takes a Spool 20, which are spaced axially with each other Ring webs 21 to 24 is provided, the outer diameter the inner diameter of the cylindrical housing 18 corresponds. Lie between successive ring lands each withdrawn in diameter areas of the spool 20, wherein the annular webs 21 and 22 axially a Ring channel 25, the annular webs 22 and 23 an annular space 26 and the annular webs 23 and 24 define an annular channel 27.
  • the annular channels 25 and 27 are via radial bores 28, 29 with a return bore 30 in conjunction, the starting from the rear, the head portion 17 of the clamping screw 11th opposite end of the spool 20 in a journal area 31 of the spool 20 ends, over the Head portion 17 of the clamping screw 11 also protrudes and in his End region of the anchor 32 of an intended as an actuator Magnetstellers carries, whose bobbin in not further illustrated manner with respect to the cover of the chain box, aligned centered on the anchor 32, attached is, wherein the chain case, not shown, the Camshaft adjuster 6 and its drive to the crankshaft receives.
  • the return bore 30 is at the expiring with the annular web 24 End of the spool 20 is closed, the intended Finished symbolically by one in the return bore 30 depressed ball 33 is illustrated. Im in the Pin 31 expiring closed end of the return hole 30 this opens, symbolized by a transverse bore 34, on the chain case and thus on the oil collection room the internal combustion engine, with which also the chain case communicates.
  • the described, return side supply path, the essentially through the central return bore 30 and the Outlet is determined on the oil collection room, corresponds to inflow, and thus on the pressure side, a central connection bore 35, extending through the neck 16 of the clamping screw 11 to the area of the bottom 19 extends and to the one in Direction of the surface of the bottom 19 extending transverse bore 36 connects, which extend with a shaft 13 in the Longitudinal bore 37 intersects, which on a radial bore 38 in the shaft 13 opens. Cut the holes 35 to 38 each with respect to their axes.
  • the hole goes 35 from the free end face of the threaded neck 16, while the holes 36 and 37 from the outer periphery of the shaft 13 in the region of the bottom 19 or from the outside of the soil 19 go out (hole approach) and against the corresponding Outside surfaces are open. Accordingly, the hole 38 formed as a through hole.
  • the open the bore approach forming ends of the bores 36 and 37 are in the range the overlap of the shaft 13 for receiving 14 in the mounting flange 5, wherein by the fit of the shaft 13 in the receptacle 14 a sufficiently tight conclusion of the annular corner area is achieved by the threaded neck 16 in the transition to the bottom 19 radially inside and the Mounting flange 5 is limited radially outward.
  • the through the bottom 19 closed, end-side end portion of the housing 18 is connected to a vent hole 39, the radially on one in the transition of the inner body 7 to the mounting flange 5 lying, end-side annular channel 40 in Inner body 7 opens, the a vent port 41st having, between the inner body 7 and mounting flange 5 runs out on the chain case.
  • each through radial bores are formed and to which ring channels 44 and 45 in the inner body 7 correspond, over which the not shown, between inner body and not shown outer body lying working chambers are supplied.
  • the annular channels 25 and 27 are because of their via the holes 28 and 29 made connection to the return bore 30 both largely unpressurized, in but in each case subjected to the same pressure, provided that a corresponding dynamic pressure when emptying the with the Verstell circuiten Connection 42 connected working chambers for a short time should build up, so that pressure fluctuations, be it inlet side or outlet side without influence on the spool valve 20 and the adjustment of the spool 20 necessary restoring forces remain.
  • the respective corresponding admission the annular channels 25 and 27 pressure-dependent actuating forces on the spool 20 excludes, allows central, formed by the return bore 30 drain side Supply connection a direct outflow at a relatively large outflow cross-section, the size of this Outflow cross-section on the length of the camshaft adjuster virtually without influence and in particular also easy to make.
  • the bore guide in pressure-side connection path interferes with the camshaft as such is not required and even allows the Relocation of the corresponding connection paths in the by the Clamping screw 11 formed housing 18 for the spool 20, so that this forms a ready to install unit due to the fit-tight insert to the inner body 7 and Recording 14 the waiver of special sealing measures makes possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP00964123A 1999-09-17 2000-09-06 Nockenwellenversteller für brennkraftmaschinen Expired - Lifetime EP1212517B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19944535A DE19944535C1 (de) 1999-09-17 1999-09-17 Nockenwellenversteller für Brennkraftmaschinen
DE19944535 1999-09-17
PCT/EP2000/008686 WO2001021938A1 (de) 1999-09-17 2000-09-06 Nockenwellenversteller für brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP1212517A1 EP1212517A1 (de) 2002-06-12
EP1212517B1 true EP1212517B1 (de) 2005-07-20

Family

ID=7922321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964123A Expired - Lifetime EP1212517B1 (de) 1999-09-17 2000-09-06 Nockenwellenversteller für brennkraftmaschinen

Country Status (6)

Country Link
US (1) US6523513B2 (ja)
EP (1) EP1212517B1 (ja)
JP (1) JP3965051B2 (ja)
DE (1) DE19944535C1 (ja)
ES (1) ES2245318T3 (ja)
WO (1) WO2001021938A1 (ja)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6782856B2 (en) * 2002-04-09 2004-08-31 Ford Global Technologies, Llc Camshaft accumulator
DE10322394A1 (de) † 2003-05-12 2004-12-02 Hydraulik-Ring Gmbh Nockenwellenversteller für Verbrennungskraftmaschinen von Kraftfahrzeugen
DE10326886A1 (de) 2003-06-14 2004-12-30 Daimlerchrysler Ag Nockenwellensteller für eine Brennkraftmaschine
DE102004025215A1 (de) * 2004-05-22 2005-12-08 Ina-Schaeffler Kg Nockenwellenversteller
DE102005041393A1 (de) 2005-09-01 2007-03-08 Schaeffler Kg Steuerventil für eine Vorrichtung zur Veränderung der Steuerzeiten einer Brennkraftmaschine
DE102005052481A1 (de) * 2005-11-03 2007-05-24 Schaeffler Kg Steuerventil für eine Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine
DE102005060111A1 (de) 2005-12-16 2007-07-05 Schaeffler Kg Nockenwellenverstellerzuleitung
DE102008036182A1 (de) * 2008-08-02 2010-02-04 Schaeffler Kg Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine
DE102009051519A1 (de) * 2009-10-31 2011-05-05 Schaeffler Technologies Gmbh & Co. Kg Nockenwellenverstellanordnung
JP5464040B2 (ja) * 2010-05-17 2014-04-09 トヨタ自動車株式会社 スプール内蔵ボルト
JP5585832B2 (ja) * 2010-09-10 2014-09-10 アイシン精機株式会社 弁開閉時期制御装置
JP5152312B2 (ja) * 2010-12-10 2013-02-27 株式会社デンソー バルブタイミング調整装置
JP5637107B2 (ja) * 2011-09-19 2014-12-10 株式会社デンソー 液圧式バルブタイミング調整装置
JP5626243B2 (ja) * 2012-02-29 2014-11-19 株式会社デンソー 液圧式バルブタイミング調整装置
CN104350241B (zh) * 2012-05-25 2016-12-14 舍弗勒技术股份两合公司 凸轮轴调节器的控制阀
DE102012111033A1 (de) * 2012-11-16 2014-05-22 Hilite Germany Gmbh Schwenkmotornockenwellenversteller mit einem elektromagnetisch betätigten Hydraulikventil
DE102014115903B4 (de) * 2014-10-31 2020-07-30 Hilite Germany Gmbh Hydraulikventil und Schwenkmotorversteller
JP2017115600A (ja) 2015-12-21 2017-06-29 アイシン精機株式会社 弁開閉時期制御装置
US11142902B2 (en) 2017-06-07 2021-10-12 Simpson Strong-Tie Company, Inc. Drywall hanger
US11225787B2 (en) 2018-06-06 2022-01-18 Simpson Strong-Tie Company, Inc. Drywall spacing joist hanger

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3810804A1 (de) * 1988-03-30 1989-10-19 Daimler Benz Ag Vorrichtung zur relativen winkelverstellung zwischen zwei in antriebsverbindung stehenden wellen
DE3825074C1 (ja) * 1988-07-23 1989-10-19 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
US5361735A (en) * 1989-10-16 1994-11-08 Borg-Warner Automotive Transmission & Engine Components Corporation Belt driven variable camshaft timing system
US5088456A (en) * 1990-01-30 1992-02-18 Atsugi-Unisia Corporation Valve timing control system to adjust phase relationship between maximum, intermediate, and minimum advance position
JPH0533617A (ja) * 1991-07-31 1993-02-09 Atsugi Unisia Corp 内燃機関のバルブタイミング制御装置
DE19654926C2 (de) * 1996-03-22 1999-10-14 Daimler Chrysler Ag Vorrichtung zur relativen Winkelverstellung einer Nockenwelle
DE19817319C2 (de) * 1998-04-18 2001-12-06 Daimler Chrysler Ag Nockenwellenversteller für Brennkraftmaschinen

Also Published As

Publication number Publication date
WO2001021938A1 (de) 2001-03-29
JP2003510487A (ja) 2003-03-18
US20020148423A1 (en) 2002-10-17
DE19944535C1 (de) 2001-01-04
EP1212517A1 (de) 2002-06-12
JP3965051B2 (ja) 2007-08-22
US6523513B2 (en) 2003-02-25
ES2245318T3 (es) 2006-01-01

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