EP1589198A2 - Dispositif hydraulique pour variation continue de phase d'arbre à cames - Google Patents

Dispositif hydraulique pour variation continue de phase d'arbre à cames Download PDF

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Publication number
EP1589198A2
EP1589198A2 EP05007351A EP05007351A EP1589198A2 EP 1589198 A2 EP1589198 A2 EP 1589198A2 EP 05007351 A EP05007351 A EP 05007351A EP 05007351 A EP05007351 A EP 05007351A EP 1589198 A2 EP1589198 A2 EP 1589198A2
Authority
EP
European Patent Office
Prior art keywords
camshaft
bolt
crankshaft
rotor
fixed component
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Withdrawn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
EP05007351A
Other languages
German (de)
English (en)
Other versions
EP1589198A3 (fr
Inventor
Piet Pater
Holger Conrad
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1589198A2 publication Critical patent/EP1589198A2/fr
Publication of EP1589198A3 publication Critical patent/EP1589198A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • 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
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34469—Lock movement parallel to camshaft axis
    • 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
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34483—Phaser return springs

Definitions

  • the invention relates to a hydraulic device for continuously variable Adjustment of a camshaft of an internal combustion engine with a with a Crankshaft of the internal combustion engine in drive connection crankshaft-fixed component and a non-rotatable with the camshaft connected to this relatively rotatable between two Drehendlagen camshaft-fixed component, wherein in at least one rotary end position the crankshaft resistant and the camshaft-resistant component with each other rotationally fixed are connectable.
  • Such devices allow an adjustment of the camshaft relative to the crankshaft and thus the timing of the cam this wave actuated valves and come inlet and / or outlet side for use. Benefits arise in particular with regard to emissions, Fuel consumption, torque curve and power development.
  • DE 199 61 567 A1 describes an initially mentioned Device for continuously variable camshaft adjustment, wherein the Non-rotatable connection between inner and outer rotor in one Rotational end position radially arranged in each rotor blade of the inner rotor Disk guide grooves are in which locking plates with Latches are arranged displaceably.
  • spring seat bores arranged spring elements act on the locking plates, so this with their locking lugs in arranged in the outer rotor locking grooves in one predefined by the operating behavior of the internal combustion engine Preferred position can be locked.
  • the locking lugs of the locking plates are rounded.
  • inner and outer rotor are in the inner rotor on the one hand and in the outer rotor on the other hand pivotally mounted pendulum arranged, which with the lying between the pendulum rotor blades of the inner rotor include pressurizable pressure chambers and in the Drehendlagen abut the rotor blades, which also in plant a Wedge gap remains free.
  • the gap between the locking lugs and the locking grooves pressurized so that the locking plates against the spring force the spring elements are lifted from the locking grooves and themselves At the same time, turn the inner and outer rotors against each other.
  • the object of the invention is, while avoiding the disadvantages mentioned an aforementioned hydraulic device for continuously variable Adjusting a camshaft with a simple and robust device to provide for the connection of inner and outer rotor, which in particular has only a slight leakage and a release of the Locking allows, essentially before a moment for twisting is generated by inner and outer rotor against each other.
  • Camshaft-resistant component has rotor blades and one in a rotor blade arranged, between a locking and an unlocking position switchable connection device with directed in Rotorachsplatz Positioning direction is provided.
  • the inventive Locking device is expediently only once, in one Rotor blades required, according to another embodiment may however, it may also be beneficial to have multiple locking devices in several rotor flights, especially in diametrically opposite Rotor blades, provide.
  • the Recording the connecting device one to the other Rotor blades broader designed rotor blade provided in which a axially movable bolt is guided. If the rotor blades anyway for the Receiving the connecting device may have sufficient width can However, of course, dispensed with a particularly wide configuration become.
  • crankshaft solid component is as cup-shaped Outer rotor configured, the bolt in the locked position in whose bottom engages and is disengaged in unlocked position.
  • the bolt as a stepped bolt to design, wherein the stepped bolt a first area and a second, diameter-reduced portion and between the first and second stage one step and thus one in Bolzenachsplatz directed, flat-ring-shaped end face is formed.
  • the flat annular end face of the bolt for Adjustment is pressurizable and the first and the second area the bolt are provided for guiding it, wherein the second area end an engagement area for engagement in the bottom of the cup-shaped outer rotor formed crankshaft fixed component forms.
  • a rotation occurs between It is crankshaft-proof and camshaft-fixed component hydraulically preferably, for pressurizing the bolt, in particular in Unlocking provided a separate pressure medium supply.
  • "Separate” refers in particular to a non-sequential one Pressure medium supply, which either parallel to the pressure medium supply to Adjustment of the device, from a common pressure medium supply branching off, or can be provided completely separate.
  • crankshaft fixed and camshaft-fixed component there is a lock of crankshaft fixed and camshaft-fixed component in one for the start of the internal combustion engine preferred position.
  • a lock takes place in the one early valve actuation associated with rotary end position when the Camshaft adjusting device on the outlet side and in the late one Valve actuation associated with rotary end position when the Camshaft adjusting device is arranged on the inlet side.
  • another embodiment may also be a lock in the a late-end valve associated rotary end position when the Camshaft adjusting device on the outlet side and in the early one Valve actuation associated with rotary end position when the Camshaft adjusting device is arranged on the inlet side, as advantageous be considered.
  • FIG. 1 shows a cylinder head 100 with hydraulic devices 102, 104 for continuously variable adjustment of not shown here Inlet and exhaust camshaft (s) of a multi-cylinder internal combustion engine in frontal view.
  • s Inlet and exhaust camshaft
  • the device 102, 104 allows an adjustment of the camshaft relative to the crankshaft and thus the timing of the cam this wave actuated valves, with advantages in particular with respect on emissions, fuel consumption, torque history and whoeritfaltung result.
  • the device 102, 104 is in the drive train arranged the camshaft drive, wherein a drive of the camshaft starting from the crankshaft via a crankshaft-fixed outer rotor 114, 116 and one to this relatively rotatable, in the present View invisible, camshaft-fixed inner rotor is done.
  • Each adjusting device 102, 104 is in a suitably designed Room 106, 108 of the cylinder head and includes the cup-shaped outer rotor 114, 116, with which a drive wheel, such as Sprocket 110, 112, to the output of the crankshaft drive connected is.
  • a drive wheel such as Sprocket 110, 112
  • the outer rotor 114, 116 is the rotation with the camshaft connected, not visible in the present view
  • inner rotor taken to the outer rotor 114, 116 relative between two Drehendlagen is rotatable and which front side a hub portion 118, 120 is assigned.
  • the cup-shaped interior of the outer rotor 114, 116 is closed by means of a screwed lid 122, 124.
  • a cylinder head cover to cover the entire arrangement is a cylinder head cover, not shown here provided, which rests tightly on the peripheral flange 126.
  • a hydraulic device 200 for continuously variable adjustment of a camshaft of an internal combustion engine not shown in detail is shown in FIG 2 open, without lid, shown.
  • the inner rotor 202 has a plurality, in the present case six, rotor blades 204, 206, 208, 210, 212, 214, which with their outer ends at the inner radius of the Ring portion 216 of the outer rotor 218 at relative rotation between Outer rotor 218 and inner rotor 202 sliding, but tight, abut.
  • cylindrical shell-shaped pendulum head guides in which the Pendulum heads of pendulums 220, 222, 224, 226, 228, 230 swiveling are arranged, whose pendulum feet in Pendelfußnuten the outer rotor 218th are mounted pivotably and radially displaceable.
  • the pendulum 220, 222, 224, 226, 228, 230 close with the rotor blades 204, 206, 208, 210, 212, 214 by means of a pressure medium, such as oil, druckbeetzyerbare Main pressure chambers and lie in the Drehendlagen as shown on the Rotor blades 204, 206, 208, 210, 212, 214;
  • a pressure medium such as oil, druckbeetzleybare Main pressure chambers and lie in the Drehendlagen as shown on the Rotor blades 204, 206, 208, 210, 212, 214;
  • Each pendulum 220, 222, 224, 226, 228, 230 are thus associated with two main pressure chambers.
  • a relative rotation of inner 202 and outer rotor 218 is by a Pressure difference in the one pendulum 220, 222, 224, 226, 228, 230th associated main pressure chambers achieved, with adjustment angle and Adjustment can be controlled by appropriate pressure gradients.
  • Inner 202 and outer rotor 218 are in at least one rotational end position, present in the rotary end position associated with an early valve actuation, when the camshaft adjusting device on the outlet side and in a late valve actuation associated with rotary end position when the Camshaft adjusting device is arranged on the inlet side, against each other Lockable, so that, for example, a start of the internal combustion engine in This preferential situation, which also serves as a reference situation, takes place.
  • the Locking device comprises one in a wider executed Rotor blade 214 axially movable guided locking bolt 232, which in the locking position in the bottom portion 234 of the cup-shaped Outer rotor 218 engages.
  • the locking bolt 232 is in the Mounting axially inserted from the camshaft side and by means of a conventional axially mountable locking ring 236 for drilling, which is resiliently seated in an annular groove in the bore 238, in his Operating position.
  • the preferred position is, especially if the pressure chambers are not are pressurized, by means of a preloaded spring, which at least indirectly on the outer rotor 218 on the one hand and on the inner rotor 202 on the other hand supports, ingestible.
  • An inner rotor 300 of a hydraulic device for continuously variable Adjustment of a camshaft not shown here Internal combustion engine is in Figure 3b in camshaft side and in Figure 3a in Brennkraftmaschinenstirn kiter view shown.
  • the inner rotor 300 includes a hub 302 connected to the camshaft rotatably connected.
  • a Pin 304, 420 For attachment of an external flange to Supporting the torsion spring and / or for attaching a sensor wheel is a Pin 304, 420 provided.
  • the hub 302 with hub portion 422 To ensure a safe power flow is the hub 302 with hub portion 422 by means of a central, from the front side passing through the hub 302, not shown screw with bolted to the camshaft.
  • a stepped bore 308 is formed in the wider executed rotor blade 306 provided hole in which the Locking bolt is received, formed as a stepped bore 308 is.
  • the stepped bore 308 has an end face 310 with a large inner diameter and camshaft side with an area 312 a smaller inner diameter, so that a step with a for Hole axis normal, flat-ring-like surface 314 is formed.
  • FIG. 4 shows a hydraulic device 400 for continuously variable Adjustment of a camshaft of an internal combustion engine in longitudinal section, where A is the camshaft side and B is the engine front designated.
  • the inner rotor 402 includes the hub 404 connected to the camshaft, with 406 is an annular groove for oil supply of holes, such as 408, 423322, designated. In this case takes place when acting on the bore 444 a Unlocking, a loading of the bore 408 has an adjustment of According to the institution. A central channel is designated 448. In the present Cut are inflow and outflow holes 408, 410 visible. Of the Inner rotor 402 is in the one annular region 414 and a bottom region 416 outer rotor 412 recorded, which bottom side the Drive wheel 420 is assigned. For the frontal cover is the with the Outer rotor 412 multi-bolt lid 426 provided.
  • Engine end face is with the hub 404 a a donor 418th for determining the camshaft rotational position receiving hub part 422 rotatably connected, wherein a pin 420 is used for rotational fixing.
  • the biasing or compensation spring is present as a spiral spring 424 executed and supported on the cover (426) on the one hand and on the hub part 422nd on the other hand.
  • a stepped bolt 430 executed, in locking position in a corresponding hole in the Bottom portion 416 of the cup-shaped outer rotor 412 engaging and in Unlocking position out of engagement pin axially movable guided.
  • the stepped bolt 430 has a first portion 432 and a first portion second, diameter-reduced portion 434, wherein between the first and the second area a stage 436 with in Bolzenachsplatz flat ring-shaped end face is formed.
  • the stepped bolt 430 is by means of a spring 438 which engages one of a locking ring 442 in axially held disc 440 supported, in the locking direction spring force.
  • Led is the stepped bolt 430 in the corresponding stepped bore 428 both in the area 432 and in Area 434.
  • the flat annular end faces of the bore 428 and the Bolts 430 limit together with the camshaft side, the large inner diameter portion of the bore 428 a Annulus 446, which with the bore 444 via a separate supply or Outlet for a pressure medium, such as oil, has.
  • the bolt 430 can be quickly brought into unlocked position, before the pressure build-up in the main pressure chambers to a rotation of inner 420 and outer rotor 412 and thus leads to a jamming of the bolt 430.
  • the channel 444 Pressing the bolt 430 not from the annular channel 406, from which also parallel to the channel for supplying the bore 408 to Adjustment of the device goes out, but becomes separate supplied with pressure medium, so that one of the pressure medium supply to Adjustment of the device completely independent release is possible.
  • the biasing spring 438 is the unlocking required pressure adjustable.
  • the present offers Invention even with one with an increased leakage problem connected, for example, aluminum or magnesium-based Lightweight construction has special advantages because of a systematic separation the mechanical locking bolt guide and the hydraulic Be implemented.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
EP05007351A 2004-04-23 2005-04-05 Dispositif hydraulique pour variation continue de phase d'arbre à cames Withdrawn EP1589198A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004019771 2004-04-23
DE200410019771 DE102004019771A1 (de) 2004-04-23 2004-04-23 Hydraulische Einrichtung zur stufenlos variablen Nockenwellenverstellung

Publications (2)

Publication Number Publication Date
EP1589198A2 true EP1589198A2 (fr) 2005-10-26
EP1589198A3 EP1589198A3 (fr) 2010-02-17

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ID=34934748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05007351A Withdrawn EP1589198A3 (fr) 2004-04-23 2005-04-05 Dispositif hydraulique pour variation continue de phase d'arbre à cames

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EP (1) EP1589198A3 (fr)
DE (1) DE102004019771A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961567A1 (de) 1999-12-21 2001-07-05 Guenther Beez Hydraulische Vorrichtung zur stufenlos variablen Nockenwellenverstellung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3164007B2 (ja) * 1997-02-14 2001-05-08 トヨタ自動車株式会社 内燃機関のバルブタイミング調整装置
JP3539182B2 (ja) * 1998-02-20 2004-07-07 トヨタ自動車株式会社 可変バルブタイミング装置
JP3110731B2 (ja) * 1998-09-10 2000-11-20 三菱電機株式会社 内燃機関用バルブタイミング可変装置
JP2000170514A (ja) * 1998-12-09 2000-06-20 Denso Corp 可変弁制御装置
EP1128026B1 (fr) * 1999-12-28 2004-09-08 BorgWarner Inc. Dispositif de variation de calage d'arbre à cames avec piston de verrouillage intégré à une ailette du rotor
JP2002047952A (ja) * 2000-07-31 2002-02-15 Toyota Motor Corp 内燃機関のバルブタイミング制御装置
JP4262873B2 (ja) * 2000-08-18 2009-05-13 三菱電機株式会社 内燃機関のバルブタイミング調整装置
JP4126600B2 (ja) * 2002-09-26 2008-07-30 アイシン精機株式会社 弁開閉時期制御装置の制御機構
DE10246838A1 (de) * 2002-10-08 2004-04-29 Daimlerchrysler Ag Verriegelungseinrichtung für einen Nockenwellenversteller
JP2004263643A (ja) * 2003-03-03 2004-09-24 Mitsubishi Electric Corp バルブタイミング調整装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961567A1 (de) 1999-12-21 2001-07-05 Guenther Beez Hydraulische Vorrichtung zur stufenlos variablen Nockenwellenverstellung

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Publication number Publication date
EP1589198A3 (fr) 2010-02-17
DE102004019771A1 (de) 2005-11-10

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