EP1445434A1 - Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile - Google Patents
Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile Download PDFInfo
- Publication number
- EP1445434A1 EP1445434A1 EP04000305A EP04000305A EP1445434A1 EP 1445434 A1 EP1445434 A1 EP 1445434A1 EP 04000305 A EP04000305 A EP 04000305A EP 04000305 A EP04000305 A EP 04000305A EP 1445434 A1 EP1445434 A1 EP 1445434A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder head
- camshaft
- bearing
- cover
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 27
- 239000000314 lubricant Substances 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008439 repair process Effects 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 of the gas exchange valves, comprising a camshaft, a device 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, which in the Assembled state covers the cylinder head.
- the Invention on an internal combustion engine in which the device for Stroke adjustment of a gas exchange valve operated by the camshaft Has pivot lever for stroke actuation of the gas exchange valves, and a Eccentric shaft, which the pivot lever for adjusting the stroke of each associated gas exchange valve pivoted
- Such an internal combustion engine is, for example, from EP 1 143 118 A2 known.
- a throttle valve for regulating the air supply is no longer required. Much more The air supply is measured solely by the fully variable adjustment of the Intake valve hubs.
- the known device for stroke adjustment uses a pivotable Intermediate lever or pivot lever, the angular position depending on the Engine operation determines the lifting capacity of the gas exchange valves.
- the central one Adjustment of all swivel levers serves an eccentric shaft, which on the Cylinder head is mounted.
- An intake camshaft also mounted on the cylinder head is arranged next to the pivot levers and works with them in this way together to open and close the gas exchange valves. Furthermore is an exhaust camshaft is provided.
- the eccentric shaft is conventionally mounted on the cylinder head supported eccentric shaft support. However, it turned out that the previous design leads to loss of rigidity. Moreover, the previously used eccentric shaft supports a possible disassembly of the Camshafts if necessary.
- the invention is based on the object Internal combustion engine, which has a device for stroke adjustment, in Area of the cylinder head from the point of view of the rigidity and the Improve assembly.
- an internal combustion engine Stroke adjustment of the gas exchange valves comprising a camshaft, a Device for stroke adjustment of a gas exchange valve, which is adjacent to the Camshaft is arranged and cooperates with this, a cylinder head at least one split bearing for the camshaft and one Cylinder head cover, which covers the cylinder head when assembled, whereby the split camshaft bearings on the cylinder head over the parting plane protrude outwards between the cylinder head and the cylinder head cover and the parting plane of the split camshaft bearings is substantially perpendicular to the parting plane between the cylinder head and the cylinder head cover runs.
- the basic idea of the invention is an optimized power flow from the cylinder head to the important functional components of the valve train.
- the lowering of the division level between the cylinder head and the cylinder head cover initially have good accessibility the bearing of the camshaft and the device for stroke adjustment. From the Improved accessibility results in simplification of assembly and Disassembly of both the stroke adjustment device and the camshaft, because the corresponding components over the first division level protrude.
- the cylinder head has one Shaft carrier for the camshaft.
- the split camshaft bearing includes one formed on the shaft bracket portion and one on the Bearing cap trained bearing shell section. Both are Shaft carrier as well as the bearing cover of the camshaft bearing over the Partition plane between the cylinder head and the cylinder head cover. This enables optimal accessibility of the camshaft bearings, which is due to the lateral arrangement of the bearing cover regardless of the device for Stroke adjustment can be opened. This makes an independent assembly and disassembly of the camshaft.
- the bearing caps are preferably approximately parallel to the maximum engagement force between the camshaft and the stroke adjustment device with the Cylinder head clamped. In coordination with the divisional level of the Camshaft bearings can be an optimized screw connection for fastening the camshaft bearing cap.
- the shaft carrier can be formed integrally with the cylinder head. However, it is also possible to releasably attach the shaft carrier to the cylinder head. It is it is conceivable to the shaft carrier before finishing the cylinder head to attach the same and the finishing on both elements together make. However, the integral variant tends to be lower Weight and is spatially more compact.
- the Stroke adjustment device Swivel lever for stroke actuation of the gas exchange valves.
- the swivel levers are operated via cams on the camshaft.
- the stroke adjustment device an eccentric shaft, which the swivel lever for Adjustment of the stroke of the associated gas exchange valve is pivoted, where for the eccentric shaft also split bearings on the cylinder head are provided.
- the division plane of the eccentric shaft bearing runs in substantially perpendicular to the plane of division between the cylinder head and the Cylinder head cover, which creates a very even load in the same combined with improved bearing rigidity and reduced assembly tolerance is achieved.
- the eccentric shaft bearings are preferably also above the parting plane between the cylinder head and the cylinder head cover in the direction of Cylinder head cover. So that the eccentric shaft and their bearings as well further components of the stroke adjustment device, in particular the swivel lever, easily accessible. In particular, an individual assembly and disassembly of the Eccentric shaft possible.
- a split Eccentric shaft bearing on a bearing cover braced against the shaft carrier There is one on the shaft support and one on the bearing cover Bearing shell section provided.
- both the shaft support and also the bearing cap of the eccentric shaft bearing is technically inexpensive via the Partition plane between the cylinder head and the cylinder head cover.
- a coupling of the alignment of the vertical divisions for the Camshaft bearings and eccentric shaft bearings are preferred but are not necessarily.
- the above object is therefore still solved by a Internal combustion engine with stroke adjustment of the gas exchange valves, comprising a camshaft with a device for stroke adjustment of a gas exchange valve a swivel lever operated by the camshaft for actuating the stroke of the Gas exchange valves and with an eccentric shaft that the swivel levers for Adjustment of the stroke of the associated gas exchange valve is pivoted, a cylinder head with at least one split bearing for the camshaft, and a cylinder head cover that covers the cylinder head when assembled, where split eccentric shaft bearings are provided on the cylinder head the division plane between the cylinder head and the cylinder head cover protrude outside and their parting plane substantially perpendicular to the Division plane runs between the cylinder head and the cylinder head cover.
- the bearing cover is preferably attached to the shaft support, which is integral with the Cylinder head designed, but can also be designed as an attachment.
- the Invention also a servomotor and a rotary encoder for the eccentric shaft be attached.
- lubricant channels in the shaft carrier if necessary connect to lubricant channels in the cylinder head and the Supply lubricant to camshaft bearings and eccentric shaft bearings.
- the lubricant nozzles directed towards the cam of the camshaft to be provided for spray cooling the cams. This can otherwise Equipment required for the supply of lubricant to the desired locations save on.
- Link guides are used to support the swivel levers in view of an optimized power flow, preferably on the shaft carrier are attached so that these the pivot lever perpendicular to the plane of division Support between the cylinder head and the cylinder head cover.
- a second camshaft can be provided parallel to the first camshaft become.
- the second camshaft is preferably mounted in a bearing block, which in turn is arranged next to the shaft carrier and detachable on the cylinder head is attached. This allows one for the eccentric shaft with regard to the power flow optimal division level of the bearings are maintained.
- the bearing bar preferably runs essentially parallel to and above the Partition plane between the cylinder head and the cylinder head cover. This allows a still cheap and independent assembly and disassembly of the Camshafts, the eccentric shaft and the link guide since the second Camshaft with the bearing block forms a unit that can be removed from the cylinder head.
- FIG. 1 and 2 shows a section from an internal combustion engine 1 for a passenger car, the for example, can be a straight six-cylinder engine.
- the internal combustion engine 1 comprises a cylinder block with one on it in the conventional manner attached cylinder head 2.
- cylinder head 2 In the cylinder head 2 is a A large number of gas exchange valves 3 are added, which are indirectly connected to the Cylinder head 2 mounted camshaft 4 can be opened and closed.
- the embodiment shown here is for the inlet side and the outlet side each provided its own camshaft.
- the gas exchange valves and In the following, camshafts on the intake side are labeled 3a and 4a, respectively corresponding elements on the outlet side, however, with 3b and 4b designated.
- a device for fully variable stroke adjustment 5 functionally integrated, via which controls the air supply to the cylinders in the cylinder block.
- the Stroke adjustment device 5 enables one to be saved under certain circumstances required throttle valve.
- the device for fully variable stroke adjustment 5 is explained in more detail in EP 1 143 118 A2, the content of which is included here becomes.
- the device for stroke adjustment 5 for each Gas exchange valve 3a has a pivot lever 6 mounted on the cylinder head 2, which with its lower end on an engaging with the gas exchange valve 3 Transmission element 7 presses.
- the stroke of the Adjust gas exchange valves 3a By changing the point of intervention between the pivot lever 6 and the transmission element 7, which from a Swiveling of the pivot lever 6 results, the stroke of the Adjust gas exchange valves 3a.
- a pivoting of the pivot lever 6 is via an engagement with an upper end portion of the pivot lever 6
- Eccentric shaft 8 made via a not shown here Actuator is driven.
- an angle encoder which has a Control device cooperates with the servomotor.
- the cylinder head 2 is including the shafts 4a, 4b and 8 supported thereon and the stroke adjustment device 5 through a cylinder head cover 11 upwards sealed.
- Suitable sealing flanges 13 and 14 on the cylinder head 2 and the Cylinder head covers 11 run in a common parting plane 12 and are clamped together by bolts 15.
- the split camshaft bearings 16 each have one Bearing shell section 17, which is integral with one on the cylinder head 2 provided shaft carrier 18 is formed. Another section of the cup 19 is formed on a bearing cover 20 which is connected to the shaft support 18 Bolt 21 is clamped.
- a special feature of the arrangement of the bearing caps 20 is that in the substantially vertical alignment of the associated bearing division plane 22 the parting plane 12 between the cylinder head 2 and the cylinder head cover 11. So deviations of up to 20 degrees are strict vertical alignment included. The deviation preferably remains however, less than about 5 to 10 degrees. In the embodiment in Figure 1 with right-angled arrangement of the parting planes 12 and 22, this means that the Partition plane 22 between the bearing cover 20 and the shaft support 18 of the Cylinder head 2 substantially vertical, the division plane 12 between the Cylinder head 2 and the cylinder head cover 11, however, are essentially horizontal runs.
- the fastening bolts 21 for the bearing caps 20 and their clamping directions run perpendicular to the division plane 22 between the bearing cover 20 and the carrier 18. This enables a very uniform loading of the Camshaft bearing 16 and the associated clamping elements, since the Reactive forces from the engagement between the cams 9 and the rollers on the Swivel levers 6 are arranged well on both sides of the camshaft 4 Fastening bolts 21 are distributed.
- the bearings 23 are also Eccentric shaft 8 above the parting plane 12 between the cylinder head 2 and the Cylinder head cover 11 arranged.
- the eccentric shaft 8 is mounted on the shaft carrier 18 on the Inlet camshaft 4a opposite side in substantially vertical divided eccentric shaft bearings 23.
- the eccentric shaft bearings 23 each include a bearing shell section 26 formed on the shaft carrier 18 and one clamped to the bearing shell section 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 runs essentially parallel to the parting plane 22 of the camshaft bearings 16 Sides of the eccentric shaft 8 a uniform load in the fastener 24 achieved for the bearing cap 27.
- the bearing caps 27 are from the side easy to mount on the shaft support 18, regardless of the assembly of the Camshaft 4a and the link guide 10.
- the vertical division of the camshaft bearings 16 and the eccentric shaft bearings 23 also reduces assembly tolerance. This has a positive effect on the Uniform distribution of the strokes of the gas exchange valves 3a. This also allows Arrangement a cylinder-selective uniform distribution repair.
- the shaft carrier 18 is integral with the cylinder head 2 trained.
- a separate shaft support 18 use that is releasably attached to the cylinder head 2. Will be a separate one Shaft carrier 18 used, this can be together with the cylinder head 2 be finished.
- Link guides 10 On the shaft carrier 18 are in addition to those already mentioned Link guides 10 continue to be a servomotor and a rotary encoder for Eccentric shaft 8 attached, through which the adjustment of the eccentric shaft 8 Stroke on the gas exchange valves 3a is regulated.
- 18 lubricant channels can be formed in the shaft carrier, which are connected to further lubricant channels in the cylinder head 2 and supply the camshaft bearings 16 and eccentric shaft bearings 23 with lubricant.
- the cams 9 of the camshaft 4 can be attached to the shaft carrier 18
- Directional lubricant nozzles are provided for spray cooling the cams 9.
- the exhaust camshaft 4b is mounted in a bearing block 30 and forms with it together a unit, the total next to the eccentric shaft 8 on the Cylinder block 2 is attached. In this way, the exhaust camshaft 4b simply disassemble if necessary. In particular, this will be a good one Accessibility of the eccentric shaft 8 and the eccentric shaft bearing 23 is guaranteed.
- the bearing ledge 30 is also on the division plane 12 Cylinder head 2 attached. However, since they are attached from above, it is too conceivable to partially sink the bearing strip 30 in the cylinder head 2.
- a bearing block 30 can, however, in principle also for the exhaust camshaft 4b a conventional storage with bearing shell sections on the cylinder head and separate bearing caps can be provided.
- the invention is not based on the embodiment described above limited. This is only for the purpose of explaining the principle of one vertical division of the camshaft bearings 16 and / or eccentric shaft bearings 23.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
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 (14)
- 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;
die geteilten Nockenwellenlager (16) an dem Zylinderkopf (2) über die Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) nach außen vorstehen und die Teilungsebene (12) der geteilten Nockenwellenlager (16) im wesentlichen senkrecht zu der Teilungsebene (12) zwischen dem Zylinderkopf (2) und dem Zylinderkopfdeckel (11) verläuft. - Verbrennungskraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß 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.
- Verbrennungskraftmaschine nach Anspruch 2, dadurch gekennzeichnet, daß der Wellenträger (18) integral mit dem Zylinderkopf (2) ausgebildet ist.
- Verbrennungskraftmaschine nach Anspruch 2, dadurch gekennzeichnet, daß der Wellenträger (18) mit dem Zylinderkopf (2) lösbar verbunden ist.
- Verbrennungskraftmaschine nach einem der Ansprüche 1 bis 4, 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 einem der Ansprüche 2 bis 5, 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. - Verbrennungskraftmaschine nach Anspruch 7, dadurch gekennzeichnet, daß der 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.
- Verbrennungskraftmaschine nach einem der Ansprüche 5 bis 8, 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 2 bis 9, dadurch gekennzeichnet, daß an dem Wellenträger (18) ein Stellmotor und ein Drehwinkelgeber für die Exzenterwelle (8) befestigt sind.
- Verbrennungskraftmaschine nach einem der Ansprüche 2 bis 10, dadurch gekennzeichnet, daß in dem Wellenträger (18) Schmiermittelkanäle ausgebildet sind, die die Nockenwellenlager (16) und Exzenterwellenlager (23) mit Schmiermittel versorgen.
- Verbrennungskraftmaschine nach Anspruch 11, 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 2 bis 12, dadurch gekennzeichnet, daß auf 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 13, 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 |
---|---|---|---|
DE10304304A DE10304304A1 (de) | 2003-02-04 | 2003-02-04 | Verbrennungskraftmaschine mit Hubverstellung der Gaswechselventile |
DE10304304 | 2003-02-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1445434A1 true EP1445434A1 (de) | 2004-08-11 |
EP1445434B1 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 |
---|---|---|---|---|
EP1760278A2 (de) * | 2005-08-30 | 2007-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Hubvariabler Ventiltrieb für eine Brennkraftmaschine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011080384A (ja) | 2009-10-05 | 2011-04-21 | Otics Corp | 車両用エンジン |
DE102011088994A1 (de) | 2011-12-19 | 2013-06-20 | Bayerische Motoren Werke Aktiengesellschaft | Hubvariabler Ventiltrieb für einen Zylinderkopf einer Brennkraftmaschine |
Citations (7)
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US2412457A (en) * | 1941-08-25 | 1946-12-10 | Laurence D Harrison | Valve actuating mechanism |
US4793297A (en) * | 1986-07-09 | 1988-12-27 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating mechanism for internal combustion engine |
EP0780547A1 (de) * | 1995-12-22 | 1997-06-25 | Siemens Aktiengesellschaft | Verstellvorrichtung für den Hubverlauf eines Gaswechselventils einer Brennkraftmaschine |
EP1050669A2 (de) * | 1999-05-05 | 2000-11-08 | Adam Opel Ag | Vorrichtung zur Betätigung eines Ventiles mit variablem Hub an Brennkraftmaschinen |
EP1134402A2 (de) * | 2000-03-13 | 2001-09-19 | Mazda Motor Corporation | Zylinderkopf |
EP1234968A2 (de) * | 2001-02-15 | 2002-08-28 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Synchronisieren der Füllung von Zylindern einer Brennkraftmaschine |
DE10123186A1 (de) * | 2001-05-12 | 2002-11-14 | Bayerische Motoren Werke Ag | Ventiltrieb-Vorrichtung zur variablen Hubverstellung eines Gaswechselventils einer Brennkraftmaschine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1272623B (de) * | 1965-02-04 | 1968-07-11 | Motoren Werke Mannheim Ag | Nockenwellen- und Ventilstoessellagerung am Zylinderblock von mehrzylindrigen Brennkraftmaschinen |
US6167856B1 (en) * | 1992-11-12 | 2001-01-02 | Ford Global Technologies, Inc. | Low friction cam shaft |
-
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
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2412457A (en) * | 1941-08-25 | 1946-12-10 | Laurence D Harrison | Valve actuating mechanism |
US4793297A (en) * | 1986-07-09 | 1988-12-27 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating mechanism for internal combustion engine |
EP0780547A1 (de) * | 1995-12-22 | 1997-06-25 | Siemens Aktiengesellschaft | Verstellvorrichtung für den Hubverlauf eines Gaswechselventils einer Brennkraftmaschine |
EP1050669A2 (de) * | 1999-05-05 | 2000-11-08 | Adam Opel Ag | Vorrichtung zur Betätigung eines Ventiles mit variablem Hub an Brennkraftmaschinen |
EP1134402A2 (de) * | 2000-03-13 | 2001-09-19 | Mazda Motor Corporation | Zylinderkopf |
EP1234968A2 (de) * | 2001-02-15 | 2002-08-28 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Synchronisieren der Füllung von Zylindern einer Brennkraftmaschine |
DE10123186A1 (de) * | 2001-05-12 | 2002-11-14 | Bayerische Motoren Werke Ag | Ventiltrieb-Vorrichtung zur variablen Hubverstellung eines Gaswechselventils einer Brennkraftmaschine |
Non-Patent Citations (1)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 0164, no. 22 (M - 1305) 4 September 1992 (1992-09-04) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1760278A2 (de) * | 2005-08-30 | 2007-03-07 | Bayerische Motoren Werke Aktiengesellschaft | Hubvariabler Ventiltrieb für eine Brennkraftmaschine |
EP1760278A3 (de) * | 2005-08-30 | 2010-03-10 | Bayerische Motoren Werke Aktiengesellschaft | Hubvariabler Ventiltrieb für eine Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
DE10304304A1 (de) | 2004-08-19 |
DE502004000110D1 (de) | 2005-12-01 |
EP1445434B1 (de) | 2005-10-26 |
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