WO2002035067A1 - Variabler ventiltrieb zur laststeuerung einer fremdgezündeten brennkraftmaschine - Google Patents
Variabler ventiltrieb zur laststeuerung einer fremdgezündeten brennkraftmaschine Download PDFInfo
- Publication number
- WO2002035067A1 WO2002035067A1 PCT/EP2001/010863 EP0110863W WO0235067A1 WO 2002035067 A1 WO2002035067 A1 WO 2002035067A1 EP 0110863 W EP0110863 W EP 0110863W WO 0235067 A1 WO0235067 A1 WO 0235067A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- adjusting means
- hollow shaft
- valve train
- shaft
- 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.)
- Ceased
Links
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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
- F01L2013/0068—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot with an oscillating cam acting on the valve of the "BMW-Valvetronic" type
-
- 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
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/1828—Cam, lever, and slide
-
- 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
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18288—Cam and lever
-
- 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
- Y10T74/2107—Follower
Definitions
- the invention relates to a variable valve train for load control of a spark-ignition internal combustion engine, which valve train is arranged between cams of a camshaft and intake valves belonging to cylinders of the internal combustion engine, with direct valve actuators, transmission members and adjusting means for influencing the lifting function of the transmission members, which transmission members are driven between the cams and the valve actuators are installed and have first engagement surfaces acted on by the cams and second acting surfaces on the valve actuators.
- a generic valve train emerges from DE 195 09 604 A1.
- the person skilled in the art cannot derive any suggestions from this publication about how he adjusts these independently of one another if two identical intake valves per cylinder are used. Disadvantages in the mixture preparation are therefore to be expected, since, for example, the load is not twisted at low loads and speeds is. In the state of the internal combustion engine just described, this slight swirl can result in fuel condensing out when the cylinder charge expands after the intake valve closes. On the other hand, especially at high speeds and loads, a large gas exchange cross section at the inlet would be desirable, which would produce a tumble flow which is advantageous for high outputs. Seen overall, the generic valve train is therefore not designed to be sufficiently variable.
- the object of the invention is therefore to provide a valve train of the aforementioned type which operates in a significantly more variable manner and at the same time is relatively easy to operate.
- each cylinder has at least two intake valves, with each intake valve having at least a separate part of the transmission member with the second engagement surface and its own adjustment means, which is adjustable relative to the other adjustment means or the further adjustment means of the intake valves per cylinder.
- the adjusting means which are produced, for example, as rotary fingers or eccentrics, are to run on telescopically inserted shafts (hollow shaft and further shaft).
- the hollow shaft is firmly connected to the adjusting means of a first row of the same inlet valves of all cylinders and the further shaft is firmly connected to the adjusting means of a further row of identical inlet valves of all cylinders lying next to it, the shafts being rotatable relative to one another with the adjusting means.
- a separate control of the different adjusting means per cylinder can thus be dispensed with.
- a solution is also conceivable and expressly included in the scope of protection of this invention, in which the inlet valves per cylinder are not controlled independently of one another, but in which the inlet valves of at least two cylinders can be acted upon differently from one another.
- a cylinder deactivation can thus be implemented via this design.
- One cylinder could be deactivated in each case while a valve stroke was being carried out on the other cylinder.
- Eccentrics can also be provided as adjusting means, which are then applied in a solution according to the aforementioned DE 195 09 604 A1. However, it is also conceivable to apply rotary fingers, which is explained in more detail in the drawing.
- a maximum relative angle of rotation of the adjusting means to one another is determined via segment-like slots in the hollow shaft for the driver means of the adjusting means of the further series of identical inlet valves.
- a simple form of attachment for the adjusting means of the hollow shaft is evident from a further subclaim. Accordingly, these are attached to the hollow shaft via a press fit.
- the further adjustment means are attached to the further shaft by means of, for example, a driving means designed as a driver.
- a driving means designed as a driver is also a press fit or a screw connection or the like.
- the hollow shaft and the further shaft should be able to be acted upon separately. It is intended to apply an electrical or hydraulic actuator to each end of the shaft. However, it is also conceivable to provide actuators nested one inside the other only on one end face of the shafts.
- the separate adjustment means should be applied to a pawl-type valve train, the transmission element of which is made in two parts.
- the adjustment means consist of rotary fingers with a locking rock, which is scanned by a part of the transmission element designed as a pawl during cam lift.
- rocker arm as the valve actuator. It is also conceivable and envisaged to use rocking or rocking levers or cup tappets.
- Figure 1 shows a variable valve train in a schematic view
- FIGS. 1 and 2 shows an adjusting means designed as a rotary finger for the valve drive according to FIGS. 1 and
- Figure 3 shows a longitudinal section through the shafts for mounting the adjusting means.
- FIG. 1 discloses a variable valve train 1, as is known to experts in terms of its basic principle and mode of operation.
- the valve train 1 is used for load control of a spark ignition internal combustion engine and is designed to be fully variable.
- Shown is a cam 2 of a camshaft 3, which acts on a first contact surface 4 (roller) of a two-part transmission element 5.
- the transmission member 5 is made on the side of the cam 2 as a lever 5a.
- the lever 5a is mounted approximately centrally on a hollow shaft 6 (see also FIG. 3).
- the hollow shaft 6 includes a further shaft 7 which can be rotated relative to the latter.
- An adjusting means 8 is positioned on a longitudinal side of the lever 5a. This serves to influence the stroke of a first row of the same inlet valves 9 of the cylinders.
- the adjusting means 8 is attached to the hollow shaft 6 by an interference fit. It has a latching rock 9a facing the latch 5b.
- the pawl 5b is fastened on a pivot center 11 on an end 10 opposite the first engagement surface 4 of the lever 5a. It extends rotatably with respect to the swivel center 11 and has a third engagement surface 12 which is designed as a roller and which communicates with the locking mountains 9a. Furthermore, the pawl 5b has a second engagement surface 13 facing away from the third engagement surface 12, which acts on a contact surface 14 (roller) of a direct valve actuation member 15.
- the immediate valve actuator 15 is made here as a rocker arm, which at one end is mounted on a support element 16 and acts on the inlet valve 9 in the lifting direction at the other end.
- the adjusting means 8 is rotated counterclockwise by turning the hollow shaft 6 via an actuator, which can be applied to the end of the hollow shaft 6, to the extent that the third contact surface 12 of the pawl 5b merely has an upstream base circle section of the locking mountains 9a.
- the pawl 5b does not pivot in the opening direction of the inlet valve 9. The latter remains closed.
- valve train should be designed so that at least two intake valves are provided per cylinder.
- Each inlet valve 9 should have its own transmission element 5 at least in the area of the pawl 5b.
- Each pawl 5b is then assigned its own adjustment means 8, 8a, so that the two intake valves 9 per cylinder can be adjusted independently of one another (see also information on the advantages of the claims).
- the hollow shaft 6 has, as mentioned above, a further shaft 7 which can be rotated relative to it within its bore 17.
- the hollow shaft 6 and the further shaft 7 can be acted upon by actuators which are independent of one another. It is conceivable that one actuator is arranged on one end of the shafts 6, 7 and another actuator on the other end of the shafts 7, 6. Hydraulic or electrical or electro-hydraulic and similar measures are conceivable here, for example.
- all adjusting means 8 of a first row of inlet valves 9 of the cylinders are pressed onto the hollow shaft 6.
- the adjusting means 8a of a further row of intake valves 9 of the same type of all cylinders are firmly connected to the further shaft 7.
- the further shaft 7 is provided with a segment-like slot 18 in the region of the adjustment means 8a.
- an inlet valve 9 can be shut down completely or a minimum stroke can be carried out.
- the further inlet valve 9 then remains "normally" open, whereby a strong swirl is generated in the cylinder, which has a positive effect on the mixture formation.
- the further shaft 7 would then have to accommodate an additional shaft and be provided with additional driver means which then project through the further shaft 7 and the hollow shaft 6.
- Valve train cam camshaft first contact surface transmission element a lever b pawl hollow shaft additional shaft adjusting means (rotating finger) a adjusting means (rotating finger) inlet valve a locking rock 0 end 1 swivel center 2 third contact surface 3 second contact surface 4 contact surface 5 direct valve actuating element (rocker arm) 6 support element 7 bore 8 slot 9
- Carrier means 0 admission 1 admission
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/415,845 US6837198B2 (en) | 2000-10-25 | 2001-09-20 | Variable valve distributor for load-controlling a spark-ignited internal combustion engine |
| KR10-2003-7005680A KR20030065498A (ko) | 2000-10-25 | 2001-09-20 | 불꽃점화식 내연기관의 부하조절용 가변 밸브 배전기 |
| CA002425498A CA2425498A1 (en) | 2000-10-25 | 2001-09-20 | Variable valve distributor for load-controlling a spark-ignited internal combustion engine |
| AU2002213941A AU2002213941A1 (en) | 2000-10-25 | 2001-09-20 | Variable valve distributor for load-controlling a spark-ignited internal combustion engine |
| EP01982326A EP1328708A1 (de) | 2000-10-25 | 2001-09-20 | Variabler ventiltrieb zur laststeuerung einer fremdgezündeten brennkraftmaschine |
| JP2002538024A JP2004516402A (ja) | 2000-10-25 | 2001-09-20 | 火花点火式内燃機関の負荷制御のための可変バルブ駆動機構 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10052811A DE10052811A1 (de) | 2000-10-25 | 2000-10-25 | Variabler Ventiltrieb zur Laststeuerung einer fremdgezündeten Brennkraftmaschine |
| DE10052811.2 | 2000-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002035067A1 true WO2002035067A1 (de) | 2002-05-02 |
Family
ID=7660964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2001/010863 Ceased WO2002035067A1 (de) | 2000-10-25 | 2001-09-20 | Variabler ventiltrieb zur laststeuerung einer fremdgezündeten brennkraftmaschine |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6837198B2 (de) |
| EP (1) | EP1328708A1 (de) |
| JP (1) | JP2004516402A (de) |
| KR (1) | KR20030065498A (de) |
| CN (1) | CN1274946C (de) |
| AU (1) | AU2002213941A1 (de) |
| CA (1) | CA2425498A1 (de) |
| DE (1) | DE10052811A1 (de) |
| WO (1) | WO2002035067A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10304991A1 (de) * | 2003-02-07 | 2004-08-19 | Ina-Schaeffler Kg | Verstellmittel in einem variablen Ventiltrieb einer Brennkraftmaschine |
| EP1748160A1 (de) * | 2005-07-28 | 2007-01-31 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Variabler Ventiltrieb für Verbrennungskraftmaschinen |
| US7188595B2 (en) * | 2004-08-31 | 2007-03-13 | Hitachi, Ltd. | Variable valve actuation device of internal combustion engine |
| US7588003B2 (en) | 2004-02-17 | 2009-09-15 | Honda Motor Co., Ltd. | Valve train for internal combustion engine |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10221133A1 (de) * | 2002-05-13 | 2003-11-27 | Thyssen Krupp Automotive Ag | Antriebs- und Verstellsystem für variable Ventilsteuerungen |
| DE10312958B4 (de) * | 2003-03-24 | 2005-03-10 | Thyssen Krupp Automotive Ag | Vorrichtung zur vairablen Betätigung der Gaswechselventile von Verbrennungsmotoren und Verfahren zum Betreiben einer derartigen Vorrichtung |
| DE10342075A1 (de) * | 2003-09-10 | 2005-06-16 | Rolf Jung | Vollvariable Hubventilsteuerung einer Brennkraftmaschine |
| DE102004037174A1 (de) * | 2004-07-30 | 2006-03-23 | Ina-Schaeffler Kg | Variable Ventiltriebsteuerung für Hubkolbenbrennkraftmaschinen |
| DE102004053208A1 (de) * | 2004-11-04 | 2006-07-20 | Schaeffler Kg | Vollvariable mechanische Ventilsteuerung mit einer Verstellwelle |
| DE102005040959A1 (de) * | 2005-08-30 | 2007-03-08 | Bayerische Motoren Werke Ag | Hubvariabler Ventiltrieb für eine Brennkraftmaschine |
| JP4519104B2 (ja) * | 2006-06-01 | 2010-08-04 | 日立オートモティブシステムズ株式会社 | 内燃機関の可変動弁装置 |
| KR100885463B1 (ko) * | 2008-04-17 | 2009-02-25 | 송광재 | 8행정 내연기관의 점화장치 |
| JP5028355B2 (ja) * | 2008-08-01 | 2012-09-19 | 株式会社オティックス | 可変動弁機構 |
| DE202009015465U1 (de) | 2009-02-14 | 2010-02-25 | Schaeffler Kg | Ventiltrieb einer Brennkraftmaschine |
| CN101550853B (zh) * | 2009-05-08 | 2011-04-06 | 上海汽车集团股份有限公司 | 发动机气门连续可变驱动机构 |
| US8386276B1 (en) | 2010-02-11 | 2013-02-26 | Mckesson Financial Holdings Limited | Systems and methods for determining prescribing physician activity levels |
| DE102012013310A1 (de) * | 2012-06-27 | 2014-01-02 | Herbert Naumann | Variable Ventilsteuerung für die Betätigung von Hubventilen mittels Tassenstößel und Schlepphebel |
| IT202000012628A1 (it) * | 2020-05-28 | 2021-11-28 | Franco Lambertini | Sistema a scorrimento per il controllo dell’alzata continua delle valvole di un motore endotermico, e motore comprendente detto sistema. |
| DE102022104658A1 (de) | 2022-02-28 | 2023-08-31 | Bayerische Motoren Werke Aktiengesellschaft | Funktionsprüfung einer drosselfreien Laststeuerung |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0596860A2 (de) * | 1986-02-19 | 1994-05-11 | Clemson University | Verfahren zum Verstellen der Ventilsteuerzeit für eine Brennkraftmaschine |
| US5373818A (en) * | 1993-08-05 | 1994-12-20 | Bayerische Motoren Werke Ag | Valve gear assembly for an internal-combustion engine |
| US5452694A (en) * | 1992-12-22 | 1995-09-26 | Unisia Jecs Corporation | Hydraulic variable lift engine valve gear |
| DE19509604A1 (de) | 1995-03-16 | 1996-09-19 | Bayerische Motoren Werke Ag | Ventiltrieb einer Brennkraftmaschine |
| US5680835A (en) * | 1993-08-05 | 1997-10-28 | Bayerische Motoren Werke Aktiengesellschaft | Rocker assembly with interconnectable arms |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL47787A (en) * | 1975-07-24 | 1979-11-30 | Luria D | Piston-type internal combustion engine |
| FR2519375B1 (fr) * | 1981-12-31 | 1986-07-11 | Baguena Michel | Distribution variable pour moteur a quatre temps |
| DE3519319A1 (de) * | 1985-05-30 | 1986-12-04 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Variable ventilsteuerung fuer eine hubkolben-brennkraftmaschine |
| DE4226789A1 (de) | 1992-08-13 | 1994-02-17 | Sigri Great Lakes Carbon Gmbh | Faserverstärkte Kunststoffwalze mit äußerer, verschleißfester, füllerhaltiger Kunststoffschicht |
| DE4226798A1 (de) * | 1992-08-13 | 1994-02-24 | Bayerische Motoren Werke Ag | Hubkolben-Brennkraftmaschine mit zwei Gaswechselventilen je Zylinder |
| DE4240981A1 (de) * | 1992-12-05 | 1994-06-09 | Basf Ag | Verdoppelte Azofarbstoffe |
| JPH06185329A (ja) * | 1992-12-22 | 1994-07-05 | Unisia Jecs Corp | エンジンの弁作動装置 |
| DE4331977A1 (de) * | 1993-09-21 | 1995-03-23 | Porsche Ag | Variable Ventilsteuerung |
| DE19640520A1 (de) * | 1996-07-20 | 1998-04-09 | Dieter Dipl Ing Reitz | Ventiltrieb und Zylinderkopf einer Brennkraftmaschine |
| US5954018A (en) * | 1997-05-08 | 1999-09-21 | Joshi; Vasant Mukund | Mode selective internal combustion engine |
| JP3881783B2 (ja) * | 1997-08-07 | 2007-02-14 | 株式会社日立製作所 | 内燃機関の可変動弁装置 |
| AUPP139598A0 (en) * | 1998-01-19 | 1998-02-05 | D.A.R.U.T. Pty Ltd | Cam and cam followers for engines |
| DE19825308A1 (de) * | 1998-06-05 | 1999-12-09 | Bayerische Motoren Werke Ag | Variabler Ventiltrieb für eine Brennkraftmaschine |
-
2000
- 2000-10-25 DE DE10052811A patent/DE10052811A1/de not_active Ceased
-
2001
- 2001-09-20 JP JP2002538024A patent/JP2004516402A/ja active Pending
- 2001-09-20 CN CN01818008.6A patent/CN1274946C/zh not_active Expired - Fee Related
- 2001-09-20 WO PCT/EP2001/010863 patent/WO2002035067A1/de not_active Ceased
- 2001-09-20 KR KR10-2003-7005680A patent/KR20030065498A/ko not_active Ceased
- 2001-09-20 US US10/415,845 patent/US6837198B2/en not_active Expired - Fee Related
- 2001-09-20 CA CA002425498A patent/CA2425498A1/en not_active Abandoned
- 2001-09-20 AU AU2002213941A patent/AU2002213941A1/en not_active Abandoned
- 2001-09-20 EP EP01982326A patent/EP1328708A1/de not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0596860A2 (de) * | 1986-02-19 | 1994-05-11 | Clemson University | Verfahren zum Verstellen der Ventilsteuerzeit für eine Brennkraftmaschine |
| US5452694A (en) * | 1992-12-22 | 1995-09-26 | Unisia Jecs Corporation | Hydraulic variable lift engine valve gear |
| US5373818A (en) * | 1993-08-05 | 1994-12-20 | Bayerische Motoren Werke Ag | Valve gear assembly for an internal-combustion engine |
| US5680835A (en) * | 1993-08-05 | 1997-10-28 | Bayerische Motoren Werke Aktiengesellschaft | Rocker assembly with interconnectable arms |
| DE19509604A1 (de) | 1995-03-16 | 1996-09-19 | Bayerische Motoren Werke Ag | Ventiltrieb einer Brennkraftmaschine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10304991A1 (de) * | 2003-02-07 | 2004-08-19 | Ina-Schaeffler Kg | Verstellmittel in einem variablen Ventiltrieb einer Brennkraftmaschine |
| US7588003B2 (en) | 2004-02-17 | 2009-09-15 | Honda Motor Co., Ltd. | Valve train for internal combustion engine |
| US7188595B2 (en) * | 2004-08-31 | 2007-03-13 | Hitachi, Ltd. | Variable valve actuation device of internal combustion engine |
| US7461620B2 (en) | 2004-08-31 | 2008-12-09 | Hitachi, Ltd. | Variable valve actuation device of internal combustion engine |
| EP1748160A1 (de) * | 2005-07-28 | 2007-01-31 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Variabler Ventiltrieb für Verbrennungskraftmaschinen |
Also Published As
| Publication number | Publication date |
|---|---|
| US6837198B2 (en) | 2005-01-04 |
| EP1328708A1 (de) | 2003-07-23 |
| KR20030065498A (ko) | 2003-08-06 |
| CA2425498A1 (en) | 2003-04-10 |
| AU2002213941A1 (en) | 2002-05-06 |
| DE10052811A1 (de) | 2002-05-08 |
| CN1274946C (zh) | 2006-09-13 |
| JP2004516402A (ja) | 2004-06-03 |
| US20040074457A1 (en) | 2004-04-22 |
| CN1471609A (zh) | 2004-01-28 |
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