EP0978638A1 - Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad - Google Patents
Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad Download PDFInfo
- Publication number
- EP0978638A1 EP0978638A1 EP99112226A EP99112226A EP0978638A1 EP 0978638 A1 EP0978638 A1 EP 0978638A1 EP 99112226 A EP99112226 A EP 99112226A EP 99112226 A EP99112226 A EP 99112226A EP 0978638 A1 EP0978638 A1 EP 0978638A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- changing
- drive wheel
- rotational position
- relative rotational
- 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.)
- Granted
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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- 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
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34436—Features or method for avoiding malfunction due to foreign matters in oil
-
- 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
- F01L2001/34479—Sealing of phaser devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2101—Cams
- Y10T74/2102—Adjustable
Definitions
- the invention relates to a device for the relative change in the rotational position of a shaft Drive wheel, in particular a camshaft of an internal combustion engine, according to the Genus of the main claim.
- Such a device is known for example from EP 0 781 899 A1.
- This describes a device for changing the rotational position of the camshaft Internal combustion engine, wherein the camshaft is rotatably connected to an inner wheel is, which has radially arranged wings, the associated cells of a cellular wheel in divided into two opposing pressure rooms. These are pressure rooms Hydraulically actuated via a control valve.
- the inner wheel is rotated relative to the cellular wheel.
- the radial extending walls of the cellular wheel are in the area of their radial outside Provide depressions that are provided for receiving dirt particles, the are introduced into the pressure chambers via the pressure medium.
- the one in the pressure medium located dirt particles collect depending on the direction of rotation Camshaft due to the accelerations acting on them and due to their Sluggishness essentially in one of the two depressions. This is about around the recess in relation to the direction of rotation.
- the one on the Front of the respective wing or web of the inner part Dirt particles can indeed move into the front recess due to its relative movement of the cellular wheel, but due to their inertia they will not be there remain.
- an entry of dirt particles in these Sealing area lead to a significantly excessive friction.
- the generic Adjustment device to improve that dirt particles from the Can store pressure medium in non-critical areas of the pressure rooms without the Risk of increased friction and / or increased wear in the area of the sealing surface.
- each pressure chamber several depressions are distributed over the circumference Incorporated peripheral surface, the path can be reduced in a particularly advantageous manner the dirt particles have to travel along the circumferential surface until they can be deposited in a depression.
- a particularly simple machining of the cellular wheel and a relatively large volume for the admission of dirt particles arises when the depressions are in axial Direction over the entire length of the pressure chamber.
- a particularly good sealing effect on the peripheral surface is achieved if the width of the depressions and / or the spacing of the depressions is less than 20% of the width of the adjacent web.
- a further improved sealing effect is achieved if the width and / or the The distance between the depressions is less than 10% of the width of the adjacent web.
- the sealing effect is achieved when the width of the depressions is approximately 0.5 to 1 mm.
- the depth (in the radial direction) is preferably in the range between 0.2 and 0.5 mm.
- the depressions can, for example, have a rectangular cross section exhibit. A particularly favorable execution in terms of production results if the depressions have an approximately semicircular cross section with a slightly conical shape Have opening area to the interior.
- a cellular wheel with depressions on its circumferential surface can in particular advantageous and inexpensive way to be produced as a sintered component.
- the Wells for receiving the dirt particles can then already at Sintering process can be created with. Machining the peripheral surface after Sintering is - as with components without a recess - without any additional effort or possible without further costs.
- 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.
- These pressure rooms are designed so that the sum of the hydraulically effective surfaces in both adjustment directions is the same.
- the pressure rooms 7a to 7d are each with a radial bore 9a to 9d in the inner part Annular groove 10 connected to the camshaft 1.
- the pressure spaces 8a to 8d are in analogously via radial bores 11a to 11d in the inner part with a second one Annular groove 12 connected in the camshaft.
- the annular groove 10 is with the Pressure channel 14 and the annular groove 12 connected to the pressure channel 13.
- 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 connected to a control valve 18 designed, for example, as a 4/3-way valve connected.
- This control valve 18 is on the one hand with a pressure medium pump 19 and secondly connected to an oil tank 20.
- All four connections are in the switching position II (neutral position) shown in FIG. 2 closed on one side to the control valve 18.
- the adjustment device 3 is thus hydraulically locked or clamped and keeps their ingested Position assignment of inner part and cellular wheel at.
- switch position I of the Control valve 18 the pressure chambers 7a to 7d through the holes 9a to 9d Annular groove 10, the pressure channel 14 and the line 17 from the pressure medium pump 19th acted upon.
- the pressure chambers 8a to 8d are through the bores 11a to 11d, the annular groove 12, the pressure channel 13 and the control line 16 to the oil tank 20th relieved.
- the webs 6a to 6d of the cellular wheel 5 each with their end faces sealing on the inner Circumferential surface 21 of the inner part 2.
- the webs 4a to 4d of the inner part lie with their circumferentially curved end faces 23 sealing on the inner Circumferential surface 24 of the cellular wheel 5.
- In this inner peripheral surface 24 are one A plurality of axially extending recesses 25 are incorporated. These are deepenings in this embodiment as longitudinal grooves with a rectangular cross section executed. Other cross-sectional shapes, such as Trapezoidal cross sections, Triangular cross sections or rounded cross sections are easily possible.
- the Recesses 25 extend in the axial direction over the entire width of the Pressure spaces 7a to 7d and 8a to 8d of the width B of the webs 4a to 4d, 6a to 6d. These recesses are distributed over the circumference at regular intervals.
- the width b and the distance d are chosen so that in about thirty wells are arranged in each pressure chamber. With distance d is here the distance between two adjacent side surfaces of the adjacent depressions Are defined. This distance corresponds to the width of the remaining web 26 Circumferential surface, which sealingly abuts the end face 23 of the web.
- the Width D or the arc length of the end face 23 and the width b and the distances d the wells are coordinated in this embodiment so that in each case about ten depressions 25 are covered by the end face 23.
- the width b of the depressions is included in the exemplary embodiment shown here about 0.75 mm. However, it is easily possible to determine the width b Varies between about 0.5 mm and 1 mm vary.
- the depth (in radial The direction of the depressions 25) in the exemplary embodiment shown here is approximately 0.35 mm. However, it is also easily possible to set the depth in the area to vary between about 0.2 mm and 0.5 mm.
- the wells 25 have here embodiment shown an approximately rectangular cross-section. It is however, it is also easily possible to add these recesses with an approx semicircular cross section with slightly conical opening area to the interior train there.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Pulleys (AREA)
Abstract
Description
- Fig. 1
- eine Ansicht der Verstelleinrichtung von der der Nockenwelle abgewandten Seite her gesehen und in
- Fig. 2
- einen Schnitt entlang der Linie II-II nach Fig. 1,
- Fig. 3
- einen vergrößerten Ausschnitt der Fig. 1.
Claims (15)
- Einrichtung zur relativen Drehlagenänderung einer Welle (1) zum Antriebsrad (5), insbesondere einer Nockenwelle einer Brennkraftmaschine, mit einer hydraulisch beaufschlagbaren Verstellvorrichtung (3) mit zwei gegeneinander wirkenden Druckräumen (7a bis 7d, 8a bis 8d), die jeweils durch das mit der Welle verbundene Innenteil (2) und das mit dem Antriebsrad verbundene Zellenrad (5) der Verstellvorrichtung gebildet werden, und mit jeweils mindestens einer Vertiefung (25) im Wandbereich der Druckräume, dadurch gekennzeichnet, daß die Vertiefungen (25) in die radial äußere Umfangsfläche (24) des Zellenrades (5) eingeformt sind.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach Anspruch 1, dadurch gekennzeichnet, daß in jedem Druckraum (7a bis 7d, 8a bis 8d) über den Umfang verteilt mehrere Vertiefungen (25) in die Umfangsfläche (24) eingearbeitet sind.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Vertiefungen (25) in regelmäßigem Abständen in die Umfangsfläche (24) eingearbeitet sind.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach Anspruch 3, dadurch gekennzeichnet, daß sich die Vertiefungen (25) in axialer Richtung über die gesamte Breite B des Druckraumes (7a bis 7d, 8a bis 8d) erstrecken.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Vertiefungen (25) als axial verlaufende Nuten ausgebildet sind.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Breite b und die Abstände d der Vertiefungen (25) so gewählt sind, daß jeweils mindestens zwei Vertiefungen durch die angrenzende Stirnfläche (23) eines Steges (4a bis 4d) des Innenteils (2) abgedeckt werden.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Breite b der Vertiefungen (25) - in Umfangsrichtung - kleiner als 1/5 der Breite D des angrenzenden Steges (25) des Innenteils ist.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Abstand d der Vertiefungen (25) kleiner als 1/5 der Breite D des angrenzenden Steges (4a bis 4d) des Innenteils ist.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Breite b der Vertiefungen - in Umfangsrichtung - kleiner als 1/10 der Breite D des angrenzenden Steges (4a bis 4d) des Zellenrades ist.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Abstand d der Vertiefungen (25) kleiner als 1/10 der Breite D des angrenzenden Steges (4a bis 4d) des Innenteils ist.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Zellenrad (5) als Sinterbauteil ausgebildet ist, und die Vertiefungen (25) beim Sintervorgang mit eingeformt sind.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Breite b der Vertiefungen (25) kleiner gleich 1 mm ist.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Breite b der Vertiefungen (25) größer gleich 0,5 mm ist.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Tiefe der Vertiefungen (25) kleiner gleich 0,5 mm ist.
- Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Tiefe der Vertiefungen größer gleich 0,2 mm ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19834843 | 1998-08-01 | ||
DE19834843A DE19834843A1 (de) | 1998-08-01 | 1998-08-01 | Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0978638A1 true EP0978638A1 (de) | 2000-02-09 |
EP0978638B1 EP0978638B1 (de) | 2003-09-17 |
Family
ID=7876186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99112226A Expired - Lifetime EP0978638B1 (de) | 1998-08-01 | 1999-06-25 | Vorrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad |
Country Status (7)
Country | Link |
---|---|
US (1) | US6129063A (de) |
EP (1) | EP0978638B1 (de) |
JP (1) | JP2000055171A (de) |
KR (1) | KR100516423B1 (de) |
CN (1) | CN1089848C (de) |
DE (2) | DE19834843A1 (de) |
ES (1) | ES2204034T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100516423B1 (ko) * | 1998-08-01 | 2005-09-23 | 독터. 인제니어.하.체.에프.포르쉐악티엔게젤샤프트 | 구동 휠에 대한 축의 회전 위치 변경을 위한 장치 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6250265B1 (en) | 1999-06-30 | 2001-06-26 | Borgwarner Inc. | Variable valve timing with actuator locking for internal combustion engine |
JP2001055914A (ja) * | 1999-08-17 | 2001-02-27 | Unisia Jecs Corp | 内燃機関のバルブタイミング制御装置 |
DE19943833A1 (de) * | 1999-09-13 | 2001-03-15 | Volkswagen Ag | Brennkraftmaschine mit hydraulischem Nockenwellenversteller zur Nockenwellenverstellung |
JP3477406B2 (ja) * | 1999-10-05 | 2003-12-10 | 株式会社日立ユニシアオートモティブ | 内燃機関のバルブタイミング変更装置 |
US6477999B1 (en) | 1999-12-28 | 2002-11-12 | Borgwarner Inc. | Vane-type hydraulic variable camshaft timing system with lockout feature |
US6311655B1 (en) | 2000-01-21 | 2001-11-06 | Borgwarner Inc. | Multi-position variable cam timing system having a vane-mounted locking-piston device |
US6247434B1 (en) * | 1999-12-28 | 2001-06-19 | Borgwarner Inc. | Multi-position variable camshaft timing system actuated by engine oil |
US6263846B1 (en) | 1999-12-28 | 2001-07-24 | Borgwarner Inc. | Control valve strategy for vane-type variable camshaft timing system |
DE10039913C1 (de) * | 2000-08-16 | 2001-10-18 | Porsche Ag | Vorrichtung zur relativen Drehwinkelverstellung einer Nockenwelle einer Brennkraftmaschine zu einem Antriebsrad |
DE50211849D1 (de) | 2001-09-11 | 2008-04-17 | Porsche Ag | Ventiltrieb für eine brennkraftmaschine |
DE102005013141B4 (de) * | 2005-03-22 | 2017-10-19 | Schaeffler Technologies AG & Co. KG | Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine |
GB2431977A (en) * | 2005-11-02 | 2007-05-09 | Mechadyne Plc | Camshaft assembly |
DE102007020526A1 (de) * | 2007-05-02 | 2008-11-06 | Schaeffler Kg | Nockenwellenversteller für eine Brennkraftmaschine mit verbesserter Ausführung der Druckräume |
DE102010008003A1 (de) * | 2010-02-15 | 2011-08-18 | Schaeffler Technologies GmbH & Co. KG, 91074 | Zellenrad |
DE102010012652B4 (de) | 2010-03-25 | 2018-05-17 | Hilite Germany Gmbh | Schwenkmotornockenwellenversteller mit einem Rotor |
DE102011000822B4 (de) | 2011-02-11 | 2012-11-08 | Hydraulik-Ring Gmbh | Gehäuse mit einem Schwenkmotorversteller |
DE102018113977A1 (de) * | 2018-06-12 | 2019-12-12 | ECO Holding 1 GmbH | Nockenwelleneinheit und Verfahren zur Herstellung einer Nockenwelleneinheit |
DE102019116880A1 (de) * | 2019-06-24 | 2020-12-24 | ECO Holding 1 GmbH | Nockenwellenversteller |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0781899A1 (de) | 1995-11-30 | 1997-07-02 | Aisin Seiki Kabushiki Kaisha | Ventilzeitsteuerungsvorrichtung |
DE19745908A1 (de) * | 1997-10-17 | 1999-04-22 | Schaeffler Waelzlager Ohg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Flügelzellen-Verstelleinrichtung |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5908A (en) * | 1848-11-07 | Richard solis | ||
JPH05113112A (ja) * | 1991-10-24 | 1993-05-07 | Toyo A Tec Kk | エンジンの弁開閉時期可変装置 |
KR100242589B1 (ko) * | 1996-04-04 | 2000-03-02 | 와다 아끼히로 | 내연기관의 가변밸브 타이밍기구 |
US5836276A (en) * | 1996-08-09 | 1998-11-17 | Denso Corporation | Rotational phase adjusting apparatus having fluid reservoir |
US5937816A (en) * | 1998-07-27 | 1999-08-17 | Wincewicz; John Garfield | Combination carburetor backing plate and crankcase breather |
DE19834843A1 (de) * | 1998-08-01 | 2000-02-03 | Porsche Ag | Einrichtung zur relativen Drehlagenänderung einer Welle zum Antriebsrad |
-
1998
- 1998-08-01 DE DE19834843A patent/DE19834843A1/de not_active Withdrawn
-
1999
- 1999-06-25 ES ES99112226T patent/ES2204034T3/es not_active Expired - Lifetime
- 1999-06-25 DE DE59906996T patent/DE59906996D1/de not_active Expired - Lifetime
- 1999-06-25 EP EP99112226A patent/EP0978638B1/de not_active Expired - Lifetime
- 1999-07-22 US US09/359,433 patent/US6129063A/en not_active Expired - Lifetime
- 1999-07-29 JP JP11215485A patent/JP2000055171A/ja active Pending
- 1999-07-30 CN CN99111850A patent/CN1089848C/zh not_active Expired - Lifetime
- 1999-07-31 KR KR10-1999-0031516A patent/KR100516423B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0781899A1 (de) | 1995-11-30 | 1997-07-02 | Aisin Seiki Kabushiki Kaisha | Ventilzeitsteuerungsvorrichtung |
DE19745908A1 (de) * | 1997-10-17 | 1999-04-22 | Schaeffler Waelzlager Ohg | Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Flügelzellen-Verstelleinrichtung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100516423B1 (ko) * | 1998-08-01 | 2005-09-23 | 독터. 인제니어.하.체.에프.포르쉐악티엔게젤샤프트 | 구동 휠에 대한 축의 회전 위치 변경을 위한 장치 |
Also Published As
Publication number | Publication date |
---|---|
CN1243911A (zh) | 2000-02-09 |
US6129063A (en) | 2000-10-10 |
EP0978638B1 (de) | 2003-09-17 |
DE59906996D1 (de) | 2003-10-23 |
KR100516423B1 (ko) | 2005-09-23 |
JP2000055171A (ja) | 2000-02-22 |
DE19834843A1 (de) | 2000-02-03 |
KR20000016991A (ko) | 2000-03-25 |
CN1089848C (zh) | 2002-08-28 |
ES2204034T3 (es) | 2004-04-16 |
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