EP0995882A2 - Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad - Google Patents
Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad Download PDFInfo
- Publication number
- EP0995882A2 EP0995882A2 EP99116481A EP99116481A EP0995882A2 EP 0995882 A2 EP0995882 A2 EP 0995882A2 EP 99116481 A EP99116481 A EP 99116481A EP 99116481 A EP99116481 A EP 99116481A EP 0995882 A2 EP0995882 A2 EP 0995882A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- rotation
- webs
- camshaft
- combustion engine
- 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- Withdrawn
Links
Images
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 device for hydraulic rotation angle adjustment Shaft to a drive wheel, in particular the camshaft of an internal combustion engine, according to the genus of the main claim.
- Such a device is known for example from US-A 4,858,572.
- an inner part rotatably with the end of Connected camshaft, which distributed several over the circumference on its outside has radial slots in which wing elements are guided radially displaceably.
- This inner part is surrounded by a cellular wheel, which is hydraulic has cells that can be acted upon by the wings in two against each other acting pressure rooms are divided. By pressurizing this Depending on the pressure difference, the pressure inside the inner part and thus the Camshaft can be rotated relative to the cellular wheel.
- the hydraulic system of the device is designed so that the Hydraulically effective total area of the pressure rooms related to the direction of rotation is different, faster adjustment times can be made possible.
- the one Rotation against the direction of rotation of the hydraulically effective The total area is designed larger than that for rotation in the opposite direction. This means that the swallowing or Delivery volume significantly reduced compared to the maximum required volume, see above that with a constant delivery pressure or delivery volume a faster adjustment is possible. With a twist against the drive direction that is at the same time off the oil volume to be relieved to be displaced less so that Overall, lower throttle losses occur and this also results in faster Adjustment is possible.
- Such a direction of rotation different interpretation of Hydraulic system of the device can be used in a particularly advantageous manner Achieve symmetrical structure of the device if at least one pressure chamber is constantly relieved of pressure.
- the pressure chamber which is constantly relieved of pressure, is in a particularly advantageous manner connected to the oil return of the internal combustion engine, so that in this pressure chamber leaking oil can drain off and it does not build up against the Twisting counter pressure can come.
- the device can be designed in a particularly advantageous manner so that the Number of times with rotation in one of the two directions with pressure pressurized pressure rooms is different.
- the number is for one Rotation against the direction of rotation of the pressurized pressure chambers larger than that with corresponding rotation in the opposite direction with pressure pressurized pressure rooms.
- the size of the effective print areas per print room can be advantageously in the pressurized pressure rooms be the same.
- 1 shows the camshaft of an internal combustion engine the free end of which the inner part 2 of an adjusting device 3 is arranged in a rotationally fixed manner.
- This inner part 2 is arranged in this embodiment with four radially Provide webs 4a to 4d.
- the inner part is surrounded by a cellular wheel 5, which on way not shown connected to the crankshaft of the internal combustion engine is and therefore acts as a drive wheel.
- the cellular wheel 5 is with four inwards projecting radial webs 6a to 6d, between which four cells are formed are, which by the webs of the inner part in two pressure spaces 7a to 7d and 8a are divided up to 8d.
- the pressure rooms 7a to 7d are each with a radial bore 9a to 9d in the inner part 2 Annular groove 10 connected to the camshaft 1.
- the pressure spaces 8a to 8c are over radial bores 11a to 11c in the inner part 2 with a second annular groove 12 in the Camshaft 1 connected.
- the radial bores are 9a to 9d and 11a to 11c each arranged so that they in the foot area of the webs 4a to 4d in the corresponding pressure rooms open.
- the two ring grooves 10 and 12 are each connected to a pressure channel 13 or 14 running in the camshaft 1.
- This Pressure channels 13 and 14 are in a manner known per se via a camshaft bearing 15 each connected to a control line 16 or 17.
- the two control lines 16 and 17 are designed with a 4/3-way valve, for example Control valve 18 connected.
- This control valve 18 is also with a Pressure medium pump 19 and an oil tank 20 connected.
- the camshaft 1 or the cellular wheel 5 via a Endless chain driven by the crankshaft of the internal combustion engine.
- Such one Timing chain drive is usually arranged inside the internal combustion engine or encapsulated so that lubrication of the chain drive without oil leakage to the Environment is possible.
- the pressure chamber 8d is radial Bore 21 connected to the outer periphery of the cellular wheel 5. Through this radial Bore 21 can be in the pressure chamber 8d due to leakage through the Sealing gaps on the webs 4a and 6d in the pressure chamber constantly collecting oil drain off, so that the pressure chamber 8d is constantly relieved of pressure.
- the pressure chamber 8d can be easily relieved of pressure via the inner part 2.
- a radial bore in the inner part with another pressure channel in the camshaft be connected, for example, to the interior of the not shown Cylinder head and the oil return located therein.
- the pressure spaces 7a to 7d are above Bores 9a to 9d, the annular groove 10, the pressure channel 14 and the pressure line 17 with the pressure medium pump 19 connected and pressurized accordingly.
- the pressure chambers 8a to 8c are through the bores 11a to 11c Annular groove 12, the pressure channel 13 and the pressure line 16 connected to the oil tank 20 and thus relieved.
- the pressure chamber 8d is constant at the same time via the bore 21 relieved of pressure.
- the inner part 2 is pressurized by the pressure chambers 7a to 7d in the viewing direction chosen in FIG. 1 in the counterclockwise direction Cell wheel 5 twisted. The inner part is thus rotated relative to the cellular wheel against the direction of rotation. Through this twisting, the Pressure chambers 8a to 8c displaced pressure medium in addition to the oil tank 20.
- the inner wheel against the direction of rotation rotated relative to the cell wheel four pressure chambers are pressurized. At the same time, the pressure medium located in it must be displaced from three pressure chambers become.
- the fourth pressure chamber 8d not pressurized is at the same time permanent Relieved of pressure via the bore 21.
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)
Abstract
Description
- Fig. 1
- eine Ansicht der Verstelleinrichtung von der der Nockenwelle abgewandten Seite her gesehen und in
- Fig. 2
- einen vereinfacht dargestellten Schnitt entlang der Linie II-II nach Fig.
Claims (6)
- Vorrichtung zur relativen Drehwinkeländerung der Nockenwelle einer Brennkraftmaschine zu einem Antriebsrad, mit einem drehfest mit der Nockenwelle (1) verbundenen Innenteil (2), das zumindest annähernd radial verlaufende Stege oder Flügel (4a bis 4d) aufweist, und mit einem angetriebenen Zellenrad (5), das mehrere über den Umfang verteilte, durch Stege (6a bis 6d) begrenzte Zellen aufweist, die von den darin winkelbeweglich geführten Stegen oder Flügeln des Innenteils in zwei Druckräume (7a bis 7d, 8a bis 8d) unterteilt sind, bei deren hydraulischer Druckbeaufschlagung bzw. Druckentlastung die Nockenwelle (1) über die Stege oder Flügel zwischen zwei Endstellungen relativ zum Zellenrad (5) verdrehbar ist, dadurch gekennzeichnet, daß die die Verdrehung verursachende, infolge der Druckbeaufschlagung bzw. Druckentlastung auf die Stege oder Flügel einwirkende Kraft für die beiden Drehrichtungen bei gleichen Betriebsbedingungen der Brennkraftmaschine unterschiedlich ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die drehrichtungsbezogene hydraulisch wirksame Gesamtfläche der Druckräume (7a bis 7d, 8a bis 8d) unterschiedlich ist.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß mindestens ein Druckraum (8d) ständig druckentlastet ist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der ständig druckentlastete Druckraum (8d) mit dem Ölrücklauf (20) der Brennkraftmaschine verbunden ist.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Anzahl der bei Drehbewegung in jeweils eine der beiden Richtungen mit Druck beaufschlagten Druckräume (7a bis 7d, 8a bis 8c) unterschiedlich ist.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß bei einer Verdrehung gegen die Antriebsdrehrichtung mehr Druckräume (7a bis 7d, 8a bis 8c) mit Druck beaufschlagt werden als bei einer Verdrehung in Antriebsdrehrichtung.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19848653 | 1998-10-22 | ||
DE1998148653 DE19848653A1 (de) | 1998-10-22 | 1998-10-22 | Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0995882A2 true EP0995882A2 (de) | 2000-04-26 |
EP0995882A3 EP0995882A3 (de) | 2000-05-17 |
Family
ID=7885255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99116481A Withdrawn EP0995882A3 (de) | 1998-10-22 | 1999-08-23 | Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0995882A3 (de) |
JP (1) | JP2000136705A (de) |
DE (1) | DE19848653A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4858572A (en) * | 1987-09-30 | 1989-08-22 | Aisin Seiki Kabushiki Kaisha | Device for adjusting an angular phase difference between two elements |
DE3922962A1 (de) * | 1989-07-12 | 1991-01-17 | Audi Ag | Antriebsvorrichtung fuer eine nockenwelle einer brennkraftmaschine |
EP0807747A1 (de) * | 1996-05-15 | 1997-11-19 | Aisin Seiki Kabushiki Kaisha | Ventilzeitsteuervorrichtung |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3846605B2 (ja) * | 1997-10-30 | 2006-11-15 | アイシン精機株式会社 | 弁開閉時期制御装置 |
-
1998
- 1998-10-22 DE DE1998148653 patent/DE19848653A1/de not_active Withdrawn
-
1999
- 1999-08-23 EP EP99116481A patent/EP0995882A3/de not_active Withdrawn
- 1999-10-19 JP JP29716599A patent/JP2000136705A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4858572A (en) * | 1987-09-30 | 1989-08-22 | Aisin Seiki Kabushiki Kaisha | Device for adjusting an angular phase difference between two elements |
DE3922962A1 (de) * | 1989-07-12 | 1991-01-17 | Audi Ag | Antriebsvorrichtung fuer eine nockenwelle einer brennkraftmaschine |
EP0807747A1 (de) * | 1996-05-15 | 1997-11-19 | Aisin Seiki Kabushiki Kaisha | Ventilzeitsteuervorrichtung |
Also Published As
Publication number | Publication date |
---|---|
JP2000136705A (ja) | 2000-05-16 |
DE19848653A1 (de) | 2000-04-27 |
EP0995882A3 (de) | 2000-05-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0924393B1 (de) | Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad | |
DE3810804C2 (de) | ||
DE102004035035B4 (de) | Nockenwellenversteller für Brennkraftmaschinen | |
DE69907989T2 (de) | Variable Ventilzeitsteuervorrichtung | |
EP2321501B1 (de) | Vorrichtung zur variablen einstellung der steuerzeiten von gaswechselventilen einer brennkraftmaschine | |
EP1573176B1 (de) | Brennkraftmaschine mit einer vorrichtung zur hydraulischen drehwinkelverstellung ihrer nockenwelle gegen ber ihrer kurbelwelle sowie mit einer vakuumpumpe für einen servoverbraucher, insbesondere für einen bremskraftverstärker | |
DE19860025B4 (de) | Ventilsteuerzeitenregelvorrichtung | |
DE102005027617A1 (de) | Ringfilter | |
EP0469334B2 (de) | Vorrichtung zur Änderung der relativen Drehlage von Wellen in einer Brennkraftmaschine | |
EP1076762B1 (de) | Vorrichtung zur hydraulischen drehwinkelverstellung einer welle zu einem antriebsrad | |
EP0644318A1 (de) | Variable Ventilsteuerung | |
DE102007030033B4 (de) | Ventilsteuerzeitsteuervorrichtung | |
EP0520286B1 (de) | Radialkolbenpumpe | |
DE10082316B4 (de) | Vorrichtung zum Variieren der Ventilsteuerzeiten einer Brennkraftmaschine, insbesondere Nockenwellen-Verstelleinrichtung mit Schwenkflügelrad | |
DE102007035672B4 (de) | Nockenwellenversteller | |
DE19932299B4 (de) | Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber der Kurbelwelle eines Verbrennungsmotors | |
DE19850947A1 (de) | Vorrichtung zur Steuerung der Öffnungs- und Schließzeiten von Gaswechselventilen einer Brennkraftmaschine | |
EP1370749B1 (de) | Vorrichtung zur relativen drehwinkelverstellung einer nockenwelle einer brennkraftmaschine zu einem antriebsrad | |
EP0924391A2 (de) | Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad | |
DE19930711C1 (de) | Vorrichtung zur relativen Drehwinkeländerung der Nockenwelle einer Brennkraftmaschine zu einem Antriebsrad | |
DE19707119C1 (de) | Hochdruckpumpe | |
EP0995882A2 (de) | Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad | |
DE10058707C2 (de) | Vorrichtung zur relativen Drehwinkelverstellung einer Nockenwelle einer Brennkraftmaschine zu einem Antriebsrad | |
DE19844646C2 (de) | Ventilzeitsteuervorrichtung | |
DE102014208598B4 (de) | Nockenwellenversteller mit zum Erreichen eines hydraulischen Freilaufs hin- und herschaltbarem Hydraulikkammerabdichtelement |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20000614 |
|
AKX | Designation fees paid |
Free format text: DE FR GB IT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 20010208 |