EP1445434B1 - Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile - Google Patents
Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile Download PDFInfo
- Publication number
- EP1445434B1 EP1445434B1 EP04000305A EP04000305A EP1445434B1 EP 1445434 B1 EP1445434 B1 EP 1445434B1 EP 04000305 A EP04000305 A EP 04000305A EP 04000305 A EP04000305 A EP 04000305A EP 1445434 B1 EP1445434 B1 EP 1445434B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- cylinder head
- bearing
- camshaft
- cylinder
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 20
- 239000000314 lubricant Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241001295925 Gegenes Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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
- 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
- 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
- F01L1/053—Camshafts overhead type
- F01L2001/0537—Double overhead camshafts [DOHC]
-
- 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
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
- F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
-
- 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
- F01L2305/00—Valve arrangements comprising rollers
-
- 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
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/13—Throttleless
Definitions
- the invention relates to an internal combustion engine with stroke adjustment the gas exchange valves, comprising a camshaft, an apparatus for Stroke adjustment of a gas exchange valve, which is adjacent to the camshaft is arranged and cooperates with this, a cylinder head with at least a split bearing for the camshaft and a cylinder head cover in the Assembly condition covers the cylinder head.
- the refers Invention on an internal combustion engine in which the device for Stroke adjustment of a gas exchange valve actuated by the camshaft Swivel lever for lifting the gas exchange valves has, as well as a Eccentric shaft, which is the pivot lever for adjusting the stroke of each associated gas exchange valve pivoted
- Object of the present invention is to provide a stiffer Hub Oundelstellmechanismus show for a generic internal combustion engine.
- the lifting actuator pivot lever for lifting operation the gas exchange valves which actuates via cam of the camshaft be, as well as continue an eccentric shaft
- the pivot lever for adjustment pivoted the stroke of the respective associated gas exchange valve wherein for the Eccentric shaft split bearings are provided on the cylinder head, the division plane substantially perpendicular to the dividing plane between the cylinder head and the cylinder head cover extends and wherein eccentric shaft bearing on the parting plane between the cylinder head and the cylinder head cover to the outside protrude.
- the Hubverstellvorraum detected Swivel lever for lifting the gas exchange valves.
- the swivel levers will be operated via cam of the camshaft.
- the Hubverstellvorraum includes an eccentric shaft, which the pivot lever for adjusting the stroke of each associated gas exchange valve pivoted, with the eccentric shaft also Split bearings are provided on the cylinder head.
- the division level of Eccentric shaft bearing extends substantially perpendicular to the dividing plane between the cylinder head and the cylinder head cover, resulting in a very uniform Load in the same, combined with an improved bearing stiffness and lower mounting tolerance is achieved.
- the shaft carrier may be integrally formed with the cylinder head. However, it is also possible to attach the shaft carrier releasably attached to the cylinder head. It is It is conceivable, the shaft carrier before a finishing of the cylinder head on the same and the finishing on both elements in common make. However, the integral variant tends to have a lower weight and is advantageously spatially more compact.
- the eccentric shaft bearings are also on the dividing plane between the cylinder head and the cylinder head cover in the direction of Cylinder head cover in front.
- the eccentric shaft and its bearings and other components of the Hubverstellvorraum, in particular the pivot lever easily accessible.
- an individual assembly and disassembly of Eccentric shaft possible.
- a further advantageous solution is that divided at the cylinder head Eccentric shaft bearings are provided which, via the dividing plane between the Cylinder head and the cylinder head cover protrude outward and the division plane substantially perpendicular to the dividing plane between the cylinder head and the cylinder head cover and the cylinder head extends a shaft carrier and a split eccentric shaft bearing clamped against the shaft carrier Has bearing cap, wherein on the shaft carrier and on the bearing cap respectively a bearing shell portion is provided and both the shaft carrier as also the bearing cap of the eccentric shaft bearing on the division plane between protrude the cylinder head and the cylinder head cover and on the shaft carrier a slotted guide is attached, the pivot lever perpendicular to the parting plane supported between the cylinder head and the cylinder head cover.
- the shaft carrier lubricant channels it is possible to form in the shaft carrier lubricant channels, the optionally connect to lubricant channels in the cylinder head and the Supply lubricant to camshaft bearing and eccentric shaft bearing.
- the shaft carrier directed to the cam of the camshaft lubricant nozzles to provide spray cooling of the cams. This can be otherwise required facilities for lubricant supply to the desired locations save on.
- a second camshaft may be provided parallel to the first camshaft.
- the second camshaft is preferably mounted in a bearing strip, which in turn is arranged next to the shaft carrier and detachable on the cylinder head is attached. This allows for the eccentric shaft with respect to the power flow optimal division level of the bearings to be maintained.
- the bearing bar preferably extends substantially parallel to and above the Division plane between the cylinder head and the cylinder head cover. This allows a further favorable and independent assembly and disassembly of the Camshafts, the eccentric shaft and the sliding guide, since the second Camshaft with the bearing block forms a detachable from the cylinder head unit.
- FIG. 1 and 2 shows a section from an internal combustion engine 1 for a passenger car, the For example, a straight six-cylinder engine can be.
- the internal combustion engine 1 comprises a cylinder block with one at this In the cylinder head 2 is attached in a conventional manner Variety of gas exchange valves 3 was added, indirectly via an on the Cylinder head 2 stored camshaft 4 are opened and closed.
- gas exchange valves and Camshaft on the inlet side are referred to below with 3a and 4a, respectively Corresponding elements on the outlet side, however, with 3b and 4b designated.
- the Device for stroke adjustment 5 allows the saving of a possible circumstances required throttle.
- the device for fully variable stroke adjustment 5 is in EP 1 143 118 A2 explained in more detail, the contents of which included here so far becomes.
- the cylinder head 2 is including the shafts 4 a, 4 b and 8 mounted thereon and the Hubverstellvorraum 5 by a cylinder head cover 11 upwards sealed.
- Suitable sealing flanges 13 and 14 on the cylinder head 2 and the Cylinder head cover 11 extend in a common division plane 12 and are clamped together by bolts 15.
- the split camshaft bearing 16 each have one Bearing shell portion 17 which is integral with one on the cylinder head. 2 provided shaft carrier 18 is formed. Another bearing shell section 19 is formed on a bearing cap 20 which communicates with the shaft carrier 18 via Bolt 21 is braced.
- a special feature of the arrangement of the bearing cap 20 is in the substantial vertical alignment of the associated bearing dividing plane 22 to the dividing plane 12 between the cylinder head 2 and the cylinder head cover 11. This makes deviations of up to 20 degrees from one severe vertical orientation included. Preferably, the deviation remains but less than about 5 to 10 degrees. In the embodiment in Figure 1 with rectangular arrangement of the dividing planes 12 and 22, this means that the Dividing plane 22 between the bearing cap 20 and the shaft support 18 of the Cylinder head 2 substantially vertically, the dividing plane 12 between the Cylinder head 2 and the cylinder head cover 11, however, substantially horizontal runs.
- the fastening bolts 21 for the bearing cap 20 and their clamping directions are perpendicular to the dividing plane 22 between the bearing cap 20 and the carrier 18. This allows a very even load on the Camshaft bearing 16 and the associated clamping elements, as the Reaction forces out of engagement between the cam 9 and the rollers to the Swing levers 6 well arranged on both sides of the camshaft 4 Fixing bolts 21 are distributed.
- the bearing of the eccentric shaft 8 takes place on the shaft support 18 at the Inlet camshaft 4a opposite side in substantially vertical divided eccentric shaft bearings 23.
- the eccentric shaft bearings 23 each comprise a formed on the shaft support 18 bearing cup portion 26 and a braced with the bearing shell portion 26 by fastening members 24 Bearing cover 27, which in turn also forms a bearing shell 29.
- the Division plane 28 of the eccentric shaft bearing 23 thus extends substantially parallel to the dividing plane 22 of the camshaft bearing 16. So is also on Side of the eccentric shaft 8 a uniform load in the attachment member 24 scored for the bearing cap 27.
- the bearing cap 27 from the side good at the shaft support 18 can be mounted, regardless of the mounting of the Camshaft 4a and the slide guide 10th
- the vertical pitch of the camshaft bearing 16 and the eccentric shaft 23rd also reduces the mounting tolerance. This has a positive effect on the Uniform distribution of the strokes of the gas exchange valves 3a. In addition, this allows Arrangement of a cylinder-selective DC distribution repair.
- the shaft carrier 18 is integral with the cylinder head in the embodiment 2 trained. However, it is also possible to use a separate shaft carrier 18 use, which is releasably secured to the cylinder head 2. Will be a separate one Used shaft carrier 18, so this can with the cylinder head 2 together be finished.
- lubricant channels can be formed, which are connected to other lubricant channels in the cylinder head 2 and provide lubricant to the camshaft bearings 16 and eccentric shaft bearings 23. It can be on the shaft support 18 on the cam 9 of the camshaft. 4 directed lubricant nozzles are provided for spray cooling of the cam 9.
- the outlet camshaft 4b is mounted in a bearing strip 30 and forms with this together a unit, the total next to the eccentric shaft 8 at the Cylinder block 2 is attached. In this way, the exhaust camshaft 4b if necessary simply disassemble. In particular, this is a good Accessibility of the eccentric shaft 8 and the eccentric shaft 23 ensures.
- Figure 1 shows, and the bearing block 30 in the parting plane 12 at the Cylinder head 2 attached. However, since their attachment is made from above, so it is conceivable to partially sink the bearing strip 30 in the cylinder head 2.
- a bearing bar 30 can for the exhaust camshaft 4b in principle also a conventional storage with bearing shell sections on the cylinder head and separate bearing caps are provided.
- the invention is not limited to the embodiment described above limited. This is merely for the purpose of explaining the principle of vertical pitch of the camshaft bearing 16 and / or eccentric shaft 23rd
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Description
- Figur 1
- einen Vertikalschnitt durch eine Verbrennungskraftmaschine nach der Erfindung, wobei hier lediglich der Bereich um den Zylinderkopf dargestellt ist, und in
- Figur 2
- eine schematische Schnittansicht durch den Wellenträger und die Lager der Nockenwelle und der Exzenterwelle.
- 1
- Verbrennungskraftmaschine
- 2
- Zylinderkopf
- 3
- Gaswechselventil
- 3a
- Einlaß-Gaswechselventil
- 3b
- Auslaß-Gaswechselventil
- 4
- Nockenwelle
- 4a
- Einlaß-Nockenwelle
- 4b
- Auslaß-Nockenwelle
- 5
- Hubverstellvorrichtung
- 6
- Schwenkhebel
- 7
- Übertragungselement
- 8
- Exzenterwelle
- 9
- Nocken der Nockenwelle
- 10
- Kulissenführung
- 11
- Zylinderkopfdeckel
- 12
- Teilungsebene
- 13
- Dichtflansch
- 14
- Dichtflansch
- 15
- Bolzen
- 16
- Nockenwellenlager
- 17
- Lagerschalenabschnitt
- 18
- Wellenträger
- 19
- Lagerschalenabschnitt
- 20
- Lagerdeckel des Nockenwellenlagers 16
- 21
- Befestigungsbolzen (Spannelement)
- 22
- Teilungsebene des Nockenwellenlagers
- 23
- Exzenterwellenlager
- 24
- Befestigungsorgan
- 26
- Lagerschalenabschnitt
- 27
- Lagerdeckel des Exzenterwellenlagers 23
- 28
- Teilungsebene des Exzenterwellenlagers
- 29
- Lagerschalenabschnitt
- 30
- Lagerleiste
Claims (10)
- Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile, umfassend:eine Nockenwelle (4);eine Vorrichtung zur Hubverstellung (5) eines Gaswechselventils (3), die benachbart zu der Nockenwelle (4) angeordnet ist und mit dieser zusammenwirkt;einen Zylinderkopf (2) mit mindestens einem geteilten Lager (16) für die Nockenwelle (4); undeinen Zylinderkopfdeckel (11), der im Zusammenbauzustand den Zylinderkopf (2) abdeckt, wobei
der Zylinderkopf (2) einen Wellenträger (18) und ein geteiltes Nockenwellenlager (16) einen gegen den Wellenträger verspannten Lagerdeckel (20) aufweist, wobei an dem Wellenträger (18) und an dem Lagerdeckel (20) jeweils ein Lagerschalenabschnitt (17, 19) vorgesehen ist und sowohl der Wellenträger (18) als auch der Lagerdeckel (20) des Nockenwellenlagers (16) über die Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) vorstehen,
dadurch gekennzeichnet, daß die Hubverstellvorrichtung (5) Schwenkhebel (6) zur Hubbetätigung der Gaswechselventile (3) umfaßt, die über Nocken (9) der Nockenwelle (4) betätigt werden, sowie weiterhin eine Exzenterwelle (8), die die Schwenkhebel (6) zur Verstellung des Hubs des jeweils zugehörigen Gaswechselventils (3) verschwenkt, wobei für die Exzenterwelle (8) geteilte Lager (23) an dem Zylinderkopf (2) vorgesehen sind, deren Teilungsebene im wesentlichen senkrecht zu der Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) verläuft, und wobei die Exzenterwellenlager (23) über die Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) nach außen vorstehen. - Verbrennungskraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Wellenträger (18) integral mit dem Zylinderkopf (2) ausgebildet ist.
- Verbrennungskraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß der Wellenträger (18) mit dem Zylinderkopf (2) lösbar verbunden ist.
- Verbrennungskraftmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß ein geteiltes Exzenterwellenlager (23) einen gegen den Wellenträger verspannten Lagerdeckel (27) aufweist, wobei an dem Wellenträger (18) und an dem Lagerdeckel (27) jeweils ein Lagerschalenabschnitt vorgesehen ist und sowohl der Wellenträger (18) als auch der Lagerdeckel (27) des Exzenterwellenlagers (23) über die Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) vorstehen.
- Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile, umfassend:eine Nockenwelle (4);eine Vorrichtung zur Hubverstellung (5) eines Gaswechselventils (3) mit einem durch die Nockenwelle (4) betätigten Schwenkhebel (6) zur Hubbetätigung der Gaswechselventile (3) und mit einer Exzenterwelle (8), die die Schwenkhebel (6) zur Verstellung des Hubs des jeweils zugehörigen Gaswechselventils (3) verschwenkt;einen Zylinderkopf (2) mit mindestens einem geteilten Lager (16) für die Nockenwelle (4); undeinen Zylinderkopfdeckel (11), der im Zusammenbauzustand den Zylinderkopf (2) abdeckt;an dem Zylinderkopf (2) geteilte Exzenterwellenlager (23) vorgesehen sind, die über die Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) nach außen vorstehen und deren Teilungsebene im wesentlichen senkrecht zu der Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) verläuft undder Zylinderkopf (2) einen Wellenträger (18) und ein geteiltes Exzenterwellenlager (23) einen gegen den Wellenträger (18) verspannten Lagerdeckel (27) aufweist, wobei an dem Wellenträger (18) und an dem Lagerdeckel (27) jeweils ein Lagerschalenabschnitt vorgesehen ist und sowohl der Wellenträger (18) als auch der Lagerdeckel (27) des Exzenterwellenlagers (23) über die Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) vorstehen undan dem Wellenträger (18) eine Kulissenführung (10) befestigt ist, die den Schwenkhebel (6) senkrecht zu der Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) abstützt.
- Verbrennungskraftmaschine nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass die Lagerdeckel (20, 27) für die Nockenwellenlager (16) und die Exzenterwellenlager (23) an gegenüberliegenden Seiten des Wellenträgers (18) angeordnet sind. - Verbrennungskraftmaschine nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß an dem Wellenträger (18) ein Stellmotor und ein Drehwinkelgeber für die Exzenterwelle (8) befestigt sind. - Verbrennungskraftmaschine nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass in dem Wellenträger (18) Schmiermittelkanäle ausgebildet sind, die die Nockenwellenlager (16) und Exzenterwellenlager (23) mit Schmiermittel versorgen. - Verbrennungskraftmaschine nach Anspruch 9,
dadurch gekennzeichnet, dass an dem Wellenträger (18) auf die Nocken (9) der Nockenwelle (4) gerichtete Schmiermitteldüsen zur Spritzkühlung der Nocken (9) vorgesehen sind. - Verbrennungskraftmaschine nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass eine zweite Nockenwelle (4b) parallel zu der ersten Nockenwelle (4a) vorgesehen ist, wobei die zweite Nockenwelle (4b) in einer Lagerleiste (30) gelagert ist, welche ihrerseits neben dem Wellenträger (18) angeordnet und an dem Zylinderkopf (2) lösbar befestigt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10304304 | 2003-02-04 | ||
DE10304304A DE10304304A1 (de) | 2003-02-04 | 2003-02-04 | Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1445434A1 EP1445434A1 (de) | 2004-08-11 |
EP1445434B1 true EP1445434B1 (de) | 2005-10-26 |
Family
ID=32603123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04000305A Expired - Lifetime EP1445434B1 (de) | 2003-02-04 | 2004-01-09 | Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1445434B1 (de) |
DE (2) | DE10304304A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011088994A1 (de) | 2011-12-19 | 2013-06-20 | Bayerische Motoren Werke Aktiengesellschaft | Hubvariabler Ventiltrieb für einen Zylinderkopf einer Brennkraftmaschine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005040959A1 (de) * | 2005-08-30 | 2007-03-08 | Bayerische Motoren Werke Ag | Hubvariabler Ventiltrieb für eine Brennkraftmaschine |
JP2011080384A (ja) | 2009-10-05 | 2011-04-21 | Otics Corp | 車両用エンジン |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2412457A (en) * | 1941-08-25 | 1946-12-10 | Laurence D Harrison | Valve actuating mechanism |
DE1272623B (de) * | 1965-02-04 | 1968-07-11 | Motoren Werke Mannheim Ag | Nockenwellen- und Ventilstoessellagerung am Zylinderblock von mehrzylindrigen Brennkraftmaschinen |
JPS6318109A (ja) * | 1986-07-09 | 1988-01-26 | Honda Motor Co Ltd | 内燃機関の動弁機構 |
US6167856B1 (en) * | 1992-11-12 | 2001-01-02 | Ford Global Technologies, Inc. | Low friction cam shaft |
DE19548389A1 (de) * | 1995-12-22 | 1997-06-26 | Siemens Ag | Verstellvorrichtung für den Hubverlauf eines Gaswechselventils einer Brennkraftmaschine |
DE19920512A1 (de) * | 1999-05-05 | 2000-11-09 | Opel Adam Ag | Vorrichtung zur Betätigung eines Ventiles mit variablem Hub an Brennkraftmaschinen |
JP4396024B2 (ja) * | 2000-03-13 | 2010-01-13 | マツダ株式会社 | シリンダヘッド構造 |
DE10106921A1 (de) * | 2001-02-15 | 2002-08-22 | Bayerische Motoren Werke Ag | Verfahren zum Synchronisieren der Füllung von Zylindern einer Brennkraftmaschine, insbesondere eines Hubkolben-Verbrennungsmotors |
DE10123186A1 (de) * | 2001-05-12 | 2002-11-14 | Bayerische Motoren Werke Ag | Ventiltrieb-Vorrichtung zur variablen Hubverstellung eines Gaswechselventils einer Brennkraftmaschine |
-
2003
- 2003-02-04 DE DE10304304A patent/DE10304304A1/de not_active Withdrawn
-
2004
- 2004-01-09 EP EP04000305A patent/EP1445434B1/de not_active Expired - Lifetime
- 2004-01-09 DE DE502004000110T patent/DE502004000110D1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011088994A1 (de) | 2011-12-19 | 2013-06-20 | Bayerische Motoren Werke Aktiengesellschaft | Hubvariabler Ventiltrieb für einen Zylinderkopf einer Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
DE502004000110D1 (de) | 2005-12-01 |
DE10304304A1 (de) | 2004-08-19 |
EP1445434A1 (de) | 2004-08-11 |
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