EP1076762B1 - Vorrichtung zur hydraulischen drehwinkelverstellung einer welle zu einem antriebsrad - Google Patents
Vorrichtung zur hydraulischen drehwinkelverstellung einer welle zu einem antriebsrad Download PDFInfo
- Publication number
- EP1076762B1 EP1076762B1 EP99923415A EP99923415A EP1076762B1 EP 1076762 B1 EP1076762 B1 EP 1076762B1 EP 99923415 A EP99923415 A EP 99923415A EP 99923415 A EP99923415 A EP 99923415A EP 1076762 B1 EP1076762 B1 EP 1076762B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- webs
- inner part
- pressure
- cellular wheel
- pressure chambers
- 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
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
-
- 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
- F01L2001/34426—Oil control valves
-
- 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 hydraulic rotation angle adjustment of a 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 is rotatably connected to the end of the camshaft, which has on its outside a plurality of radial slots distributed over the circumference, in which wing elements are guided radially displaceably.
- This inner part is surrounded by a cellular wheel which has a plurality of cells which can be acted upon hydraulically and which are subdivided by the wings into two pressure spaces acting against one another. By pressurizing these pressure chambers, depending on the pressure difference, the cellular wheel can be rotated relative to the inner part and thus to the camshaft.
- a hydraulically actuated piston is guided in two radial bores in defined angular positions in the cellular wheel, which piston can be inserted into a radial recess of the inner part in the assigned end position of the device.
- These pistons are acted upon by compression spring elements in the direction of the inner part and can be displaced in the opposite direction by hydraulic action on the bores in the inner ring.
- the device is to be locked in one of its two end positions, as long as the pressure for acting on the pressure chambers does not reach a defined level. Only when a certain pressure level is reached are the pistons pushed back against the action of the compression springs and allow the inner part to be rotated relative to the cell wheel.
- Such a device is intended, inter alia, to avoid rattling noises when the internal combustion engine starts up, which occur as a result of changing moment loads when the internal combustion engine starts up and operates.
- a device for the hydraulic rotation angle adjustment of a camshaft to its drive wheel is also known, in which the inner part is provided with fixed, radially extending webs. Pressure springs are clamped between the webs of the inner part and the opposite webs or walls of the cellular wheel, which are intended to move the inner part relative to the cellular wheel into one of the two end positions when the pressure is reduced.
- JP 2-241914 which is listed as prior art in US Pat. No. 5,215,046, shows a so-called gearbox axial camshaft adjuster, which, in contrast to Generic device for relative change in rotational position only one Pressure chamber is formed, the pressurization of a spring element counteracts.
- a separate hydraulic damping chamber is provided opposite the pressure chamber is sealed to adjust the camshaft.
- the integrated hydraulic damping is in a particularly advantageous manner in the form of a hydraulically effective damping throttle.
- Integrated damping that becomes effective when the end position is approached can be achieved in a particularly advantageous manner if between the webs of Inner part and the webs of the cellular wheel, a throttle chamber is formed in the pressure medium is enclosed before the end position is reached.
- Throttle chamber formed between the relatively moving components is, an appropriate angular assignment of the Damping begins or begins when a defined position is reached Damping can be set. This can be ensured in a particularly advantageous manner be that the adjustment process undamped over the largest possible angular range he follows.
- a particularly advantageous one with regard to the mechanical load on the components End position damping results if the throttle chamber has a defined one Throttle gap can be relieved. This can be done in the Pressure chamber enclosed pressure medium relatively strong when approaching the end position exit throttled so that excessive damping is avoided. This is done by Appropriate training of the sealing gap continues to ensure that the mechanical limited end position can be reached in any case. Adverse spring effects can thus be effectively prevented.
- Such a throttle chamber can be designed in a particularly advantageous manner be, if in one of the adjacent webs a depression and in the another web a corresponding extension is formed.
- the projections dip into the recess in adjacent recesses, so that the opposite wall areas through their overlap the throttle chamber complete or form the throttle gap.
- 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 in this embodiment with four radially arranged webs 4a to 4d provided.
- the inner part is encompassed by a cellular wheel 5, which is not closer to shown way is connected to the crankshaft of the internal combustion engine and consequently acts as a drive wheel.
- the cellular wheel 5 has four inwardly projecting radial webs 6a to 6d, between which four cells are formed, the through the webs of the inner part in two pressure spaces 7a to 7d and 8a to 8d are divided. These pressure chambers are designed so that the sum of the hydraulic effective areas in both adjustment directions is the same.
- the pressure spaces 7a to 7d are each via a radial bore 9a to 9d in the inner part with an annular groove 10 on the Camshaft 1 connected.
- the pressure spaces 8a to 8d are in an analogous manner via radial Bores 11a to 11d in the inner part with a second annular groove 12 in the camshaft connected.
- the radial bores 9a to 9d and 11a to 11d are each so arranged that they each 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 one in the Camshaft extending pressure channel 13 and 14 connected. These pressure channels 13 and 14 are in a manner known per se via a camshaft bearing 15 with one each Control line 16 or 17 connected.
- the two control lines 16 and 17 are with a control valve 18, which is designed, for example, as a 4/3-way valve. This control valve 18 is also with a pressure medium pump 19 and Oil tank 20 connected.
- switch position II neutral position of the control valve 18 shown in FIG. 1
- the connections to the two control lines 16 and 17, the pressure medium pump 19 and the oil tank 20 is closed on one side.
- the Adjustment device clamped hydraulically and keeps the respective relative Position assignment of inner wheel and cellular wheel at.
- switch position I of the control valve 18 are the pressure chambers 7a to 7d via the bores 9a to 9d, the annular groove 10 Pressure channel 14 and the pressure line 17 connected to the pressure medium pump 19 and accordingly pressurized.
- the pressure spaces 8a to 8d are over the bores 11a to 11d, the annular groove 12, the pressure channel 13 and the pressure line 16 connected to the oil tank 20 and thus relieved.
- the inner part 2 is covered by the Pressurizing the pressure spaces 7a to 7d in the viewing direction chosen in FIG. 1 rotated counterclockwise to cell wheel 5. This twist will at the same time the pressure medium located in the pressure chambers 8a to 8d in addition to Oil tank displaced.
- the cellular wheel 5 and the inner part 2 are each constructed symmetrically.
- the embodiment of the embodiment shown in FIGS. 3a to 3c is simplified Crosspieces of the inner part and the cellular wheel only using the example of a crosspiece or the represented by this limited pressure space, but also applies to the same other webs or pressure rooms.
- Figures 3a to 3c and following description only the approximation to the end position analogous to Switch position I shown and described. Approaching the opposite End position (switch position III) takes place analogously.
- These depressions 21, 22 extend over the entire Width (in the axial direction) of the respective web.
- the depressions 21, 22 extend extend approximately in the radial direction over the inner third of the respective web and up to the end face 23 or up to the adjacent peripheral surface 24 of the inner part 2.
- a projection 25 or 26 is formed on the webs 4a to 4d of the inner part 2 .
- These projections 25 and 26 are in their position so coordinated that they with the respective adjacent recesses 21 and 22nd correspond.
- the projections 25 act in each case with the depressions 22 and the projections 26 together with the depressions 21 of the respectively adjacent web.
- the projections 25 and 26 also extend over the entire width (in axial Direction) of the webs. In contrast to the specializations, they are sufficient in this Embodiment, however, not up to the peripheral surface of the inner part, so that their Bottom sides 27 are spaced apart from these.
- the tops 28 of the protrusions 25, 26 have a small radial distance from the shoulders 29 of the depressions 21 and 22, so that the projections when approaching the end position - as can be seen in Fig. 3b - under Formation of a throttle gap 32 can dip into the wells.
- the pressure spaces 8a to 8d are each in two partial pressure spaces 30 and 31 divided.
- the partial pressure space 30 located at the foot of the webs 4a to 4d of the inner part 2 is then still with the respectively opening into the pressure chamber 11a to 11d in connection.
- the radially outer partial pressure chamber 31, which acts as a throttle chamber is by the overlap of the top 28 and the shoulder 29 of the partial pressure chamber 30 largely separated and is only over the emerging throttle gap 32 in connection with this.
- the pressure medium located in the partial pressure chamber 31 can be further rotation to the end position (direct abutment of the webs against each other, Fig.
- the throttling effect that occurs depends besides the effect of the viscosity, above all on the height and length of the throttle gap from.
- the length of the throttle gap increases with increasing coverage.
- the height of the throttle gap depends on the distance between the top 28 and the shoulder 29. By adjusting the height of the throttle gap, the throttling effect on the be matched to the respective operating conditions. In this embodiment the top and shoulder run largely parallel.
- the throttling effect increases at least approximately proportionally to increase the coverage or to extend the throttle gap, i.e. with increasing approach to the end position.
- To vary the height of the throttle gap so that the influence of the change in length of the Throttle gap is increased or decreased. This can be done for example by wedge-like Arrange the top relative to the shoulder.
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
Aus der DE 39 22 962 A1 ist weiterhin eine Vorrichtung zur hydraulischen Drehwinkelverstellung einer Nockenwelle zu ihrem Antriebsrad bekannt, bei der das Innenteil mit festen, radial verlaufenden Stegen versehen ist. Zwischen den Stegen des Innenteils und den gegenüberliegenden Stegen bzw. Wänden des Zellenrades sind Druckfedern eingespannt, die bei Verringerung der Druckbeaufschlagung das Innenteil relativ zum Zellenrad in eine der beiden Endstellungen bewegen soll.
- Fig. 1
- eine Ansicht der Verstelleinrichtung von der der Nockenwelle abgewandten Seite her gesehen,
- Fig. 2
- einen vereinfacht dargestellten Schnitt entlang der Linie II-II nach Fig. 1,
- Fig. 3a
- eine vergrößerte Teilansicht nach Fig. 1 in einer ersten Drehlage,
- Fig. 3b
- eine vergrößerte Teilansicht nach Fig. 1 bei Annäherung an eine Endlage und
- Fig. 3c
- eine vergrößerte Teilansicht nach Fig. 1 bei Erreichen der Endlage.
Claims (9)
- 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 Druckbeaufschlagung bzw. Druckentlastung die Nockenwelle über die Stege oder Flügel zwischen zwei Endstellungen relativ zum Zellenrad verdrehbar ist, dadurch gekennzeichnet, daß die Drehlagenänderung vor Erreichen einer der beiden Endstellungen durch integrierte Dämpfungsmittel (21, 22; 25, 26; 32) hydraulisch gedämpft ist, wobei die Dämpfungsmittel als Dämpfungsdrossel (32) ausgebildet sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zwischen den Stegen (4a bis 4d) des Innenteils und den Stegen (6a bis 6d) des Zellenrades vor Erreichen der Endstellung eine Drosselkammer (31) ausgebildet wird, in der Druckmittel eingeschlossen wird.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Drosselkammer (31) über einen Drosselspalt (32) hydraulisch entlastet wird.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Drosselkammer durch eine Vertiefung (21, 22) in einem der Stege des Innenteils oder des Zellenrades und einem angrenzenden Vorsprung (25, 26) in dem jeweils benachbarten Steg des Zellenrades oder des Innenteils gebildet ist.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Druckräume (7a bis 7d, 8a bis 8d) bei Annäherung an die jeweilige Endlage in zwei Teildruckräume (30, 31) unterteilt werden, zwischen denen der Dichtspalt (32) ausgebildet wird.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Dichtspalt (32) durch eine Umfangsfläche (29) der Vertiefung und eine Umfangsfläche (28) des Vorsprunges gebildet wird.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Dämpfungsvorgang auf der Ablaufseite der Hydraulikversorgung der Druckräume erfolgt.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Zellenrad als Sinterbauteil ausgebildet ist, und daß die Vorsprünge bzw. Vertiefungen beim Sintervorgang mit erstellt sind.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Innenteil als Sinterbauteil ausgebildet ist, und daß die Vorsprünge bzw. Vertiefungen beim Sintervorgang mit erstellt sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19819995 | 1998-05-05 | ||
DE19819995A DE19819995A1 (de) | 1998-05-05 | 1998-05-05 | Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad |
PCT/EP1999/002504 WO1999057423A1 (de) | 1998-05-05 | 1999-04-14 | Vorrichtung zur hydraulischen drehwinkelverstellung einer welle zu einem antriebsrad |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1076762A1 EP1076762A1 (de) | 2001-02-21 |
EP1076762B1 true EP1076762B1 (de) | 2002-06-26 |
Family
ID=7866702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99923415A Expired - Lifetime EP1076762B1 (de) | 1998-05-05 | 1999-04-14 | Vorrichtung zur hydraulischen drehwinkelverstellung einer welle zu einem antriebsrad |
Country Status (8)
Country | Link |
---|---|
US (1) | US6390043B1 (de) |
EP (1) | EP1076762B1 (de) |
JP (1) | JP4422899B2 (de) |
KR (1) | KR100562444B1 (de) |
CN (1) | CN1113155C (de) |
DE (2) | DE19819995A1 (de) |
ES (1) | ES2175978T3 (de) |
WO (1) | WO1999057423A1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3447601B2 (ja) * | 1999-02-05 | 2003-09-16 | 本田技研工業株式会社 | 内燃機関の動弁制御装置 |
ES2214362T3 (es) * | 2000-06-16 | 2004-09-16 | Dr.Ing. H.C.F. Porsche Aktiengesellschaft | Dispositivo para la regulacion del angulo de giro de un arbol de levas de un motor de combustion con relacion a una rueda de impulsion. |
DE10112206A1 (de) * | 2001-03-14 | 2002-09-26 | Porsche Ag | Vorrichtung zur relativen Drehwinkelverstellung einer Nockenwelle einer Brennkraftmaschine zu einem Antriebsrad |
US6866013B2 (en) | 2002-04-19 | 2005-03-15 | Borgwarner Inc. | Hydraulic cushioning of a variable valve timing mechanism |
DE10320639A1 (de) * | 2003-04-22 | 2004-11-11 | Hydraulik-Ring Gmbh | Nockerwellenversteller für Fahrzeuge, vorzugsweise für Kraftfahrzeuge |
US6883480B1 (en) * | 2003-12-19 | 2005-04-26 | Hydraulik-Ring Gmbh | Camshaft adjuster for internal combustion engines of motor vehicles |
DE102004019770A1 (de) * | 2004-04-23 | 2005-11-10 | Bayerische Motoren Werke Ag | Hydraulische Einrichtung zur stufenlos variablen Nockenwellenverstellung |
DE102006019607B4 (de) * | 2006-04-25 | 2008-01-31 | Hydraulik-Ring Gmbh | Nockenwellenversteller |
DE102007058491A1 (de) * | 2007-12-05 | 2009-06-10 | Schaeffler Kg | Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine |
JP4905843B2 (ja) * | 2010-02-23 | 2012-03-28 | 株式会社デンソー | バルブタイミング調整装置 |
US8555836B2 (en) * | 2010-12-10 | 2013-10-15 | Delphi Technologies, Inc. | Electric drive camshaft phaser with torque rate limit at travel stops |
US9341089B2 (en) | 2014-04-04 | 2016-05-17 | RB Distribution, Inc. | Camshaft phaser |
SE539977C2 (en) * | 2016-06-08 | 2018-02-20 | Scania Cv Ab | Variable cam timing phaser utilizing hydraulic logic element |
DE102018107351A1 (de) | 2017-03-28 | 2018-10-04 | Borgwarner Inc., Patent Department | Geschalteter pufferanschlag |
US10371241B1 (en) * | 2018-06-22 | 2019-08-06 | Baoxiang Shan | Stress-wave actuator and reducer |
CN114321194B (zh) * | 2021-12-30 | 2023-05-12 | 新疆金风科技股份有限公司 | 联轴节装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH243908A (de) * | 1944-11-27 | 1946-08-15 | Schweizerische Lokomotiv | Flüssigkeitsbremse mit Rückschlagventil am Passivkolben von hydraulisch gesteuerten Ventilen von Brennkraftmaschinen. |
DE2825326A1 (de) * | 1978-06-09 | 1979-12-20 | Daimler Benz Ag | Drehmomentuebertragungseinrichtung |
JPS59229011A (ja) * | 1983-06-08 | 1984-12-22 | Yanmar Diesel Engine Co Ltd | 内燃機関の動弁機構 |
JPH0192504A (ja) * | 1987-09-30 | 1989-04-11 | Aisin Seiki Co Ltd | 弁開閉時期制御装置 |
DE3922962A1 (de) * | 1989-07-12 | 1991-01-17 | Audi Ag | Antriebsvorrichtung fuer eine nockenwelle einer brennkraftmaschine |
DE4116196A1 (de) * | 1991-05-17 | 1992-11-19 | Bosch Gmbh Robert | Nockenwelle-verstellvorrichtung fuer verbrennungsmotoren |
JP2828361B2 (ja) * | 1991-10-03 | 1998-11-25 | 株式会社デンソー | バルブタイミング調整装置 |
JP2988101B2 (ja) * | 1992-01-30 | 1999-12-06 | アイシン精機株式会社 | 弁開閉時期制御装置 |
DE4321003C2 (de) * | 1993-06-24 | 2001-05-03 | Schaeffler Waelzlager Ohg | Vorrichtung zum Verändern der Steuerzeiten einer Brennkraftmaschine |
IT1271511B (it) * | 1993-10-06 | 1997-05-30 | Carraro Spa | Variatore di fase tra l'albero motore e l'albero a camme di un motore a combustione interna |
US5823152A (en) * | 1995-06-14 | 1998-10-20 | Nippondenso Co., Ltd. | Control apparatus for varying a rotational or angular phase between two rotational shafts, preferably applicable to a valve timing control apparatus for an internal combustion engine |
US5836276A (en) * | 1996-08-09 | 1998-11-17 | Denso Corporation | Rotational phase adjusting apparatus having fluid reservoir |
US5836277A (en) * | 1996-12-24 | 1998-11-17 | Aisin Seiki Kabushiki Kaisha | Valve timing control device |
DE19756016A1 (de) * | 1997-12-17 | 1999-06-24 | Porsche Ag | Vorrichtung zur hydraulischen Drehwinkelverstellung einer Welle zu einem Antriebsrad |
-
1998
- 1998-05-05 DE DE19819995A patent/DE19819995A1/de not_active Withdrawn
-
1999
- 1999-04-14 JP JP2000547351A patent/JP4422899B2/ja not_active Expired - Lifetime
- 1999-04-14 CN CN99805774A patent/CN1113155C/zh not_active Ceased
- 1999-04-14 US US09/674,707 patent/US6390043B1/en not_active Expired - Lifetime
- 1999-04-14 KR KR1020007012284A patent/KR100562444B1/ko not_active IP Right Cessation
- 1999-04-14 EP EP99923415A patent/EP1076762B1/de not_active Expired - Lifetime
- 1999-04-14 DE DE59901863T patent/DE59901863D1/de not_active Expired - Lifetime
- 1999-04-14 ES ES99923415T patent/ES2175978T3/es not_active Expired - Lifetime
- 1999-04-14 WO PCT/EP1999/002504 patent/WO1999057423A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ES2175978T3 (es) | 2002-11-16 |
KR100562444B1 (ko) | 2006-03-20 |
EP1076762A1 (de) | 2001-02-21 |
KR20010043317A (ko) | 2001-05-25 |
DE19819995A1 (de) | 1999-11-11 |
WO1999057423A1 (de) | 1999-11-11 |
CN1299437A (zh) | 2001-06-13 |
DE59901863D1 (de) | 2002-08-01 |
CN1113155C (zh) | 2003-07-02 |
US6390043B1 (en) | 2002-05-21 |
JP2002513883A (ja) | 2002-05-14 |
JP4422899B2 (ja) | 2010-02-24 |
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