EP1550793A1 - Nockenwellenversteller mit teilweise unterbrochener Druckölzufuhr - Google Patents
Nockenwellenversteller mit teilweise unterbrochener Druckölzufuhr Download PDFInfo
- Publication number
- EP1550793A1 EP1550793A1 EP04100003A EP04100003A EP1550793A1 EP 1550793 A1 EP1550793 A1 EP 1550793A1 EP 04100003 A EP04100003 A EP 04100003A EP 04100003 A EP04100003 A EP 04100003A EP 1550793 A1 EP1550793 A1 EP 1550793A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- bearing
- annular groove
- receptacle
- segment
- 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
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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
- F01L1/02—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
- F01L1/0532—Camshafts overhead type the cams being directly in contact with the driven valve
-
- 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
- F01L1/024—Belt drive
-
- 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
- F01L1/34403—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 helically teethed sleeve or gear moving axially between crankshaft and camshaft
- F01L1/34406—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 helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley
-
- 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
- F01L1/34409—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 by torque-responsive means
-
- 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
- F01L2001/0476—Camshaft bearings
-
- 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]
Definitions
- the invention relates to a system of camshaft with at least one cam and camshaft receptacle for supplying a device for Camshaft adjustment of an internal combustion engine with pressure oil, in which the Camshaft is designed in the hollow type that an inner camshaft passage is formed and on the one hand this inner camshaft passage with the Adjustment device is connected and on the other hand at least one Camshaft connecting passage from the inner camshaft passage to the outer Lateral surface of the camshaft leads, with the camshaft receptacle over Has at least one supply line to the inner surface of the Camshaft holder leads and over the camshaft connecting channel and the inner camshaft channel with the adjustment is connectable and the Supplying the adjusting device with hydraulic oil is used.
- Such systems are required to make a camshaft adjustment can, with the influence on the timing of the control elements of a valve train can be taken.
- the variation of the control times is a solution to the Reduction of fuel consumption.
- the problem is the fuel consumption and thus the efficiency in particular in gasoline engines.
- the reason for this lies in the principle working method of the Otto engine.
- the Otto engine works with a homogeneous fuel-air mixture, that - if there is no direct injection - by external mixture formation is prepared by introduced into the intake air in the intake tract fuel becomes.
- the desired power is set by changing the Filling the combustion chamber, so that the working method of the gasoline engine - unlike diesel engine - a quantity regulation is based.
- This load control is usually carried out by means provided in the intake Throttle.
- the pressure of the sucked Air behind the throttle will be reduced more or less severely. at constant combustion chamber volume can be in this way above the pressure of sucked air, the air mass. the quantity will be set.
- the Quantity control by means of throttle has due to the pressure drop and the associated throttle losses thermodynamic disadvantages.
- An approach to de-throttling according to the prior art consists in the Use of a variable valve train.
- a variable valve train Unlike conventional Valve actuators where both the stroke of the valves and the timing, ie. H. the opening and closing times of the intake and exhaust valves, due to the non-flexible, as not adjustable mechanism of the valve train as invariable Sizes are given, they can the combustion process and thus the Fuel consumption influencing parameters by means of variable valve trains more or less varied.
- the ideal solution would be a fully variable one Valve control specific for any operating point of the gasoline engine matched values for the stroke and the timing allows.
- valve timing is through the Use of a camshaft adjusting device, with which the camshaft can be rotated by a certain angle relative to the crankshaft, so that the tax times are postponed to early or late.
- Such adjusting devices are usually actuated hydraulically or controlled, with one or more pressure chambers targeted with hydraulic oil be relieved or relieved.
- Such adjusting device 100 is disclosed in the German patent application DE 198 50 947 A1 and is shown in FIG.
- a belt pulley 110 is provided with a housing cover 112 and a first intermediate element 114 rotatably connected.
- the Intermediate element 114 has radially inwardly a toothing 116, which has a arranged on an axially displaceably mounted piston device 118 Counter toothing 120 meshes.
- the piston device 118 has a second Teeth 122, which in a at a second intermediate element 124th arranged second counter teeth 126 engages. At least one pair of gears 116, 120 and 122, 126 is helically toothed.
- the second intermediate element 124 is rotatably connected to the camshaft 128 in conjunction, so that at an axial Displacement of the piston device 118, a rotation of the camshaft 128th relative to the pulley 110 and thus against the crankshaft.
- camshaft the interaction of their cams with the valve trains of the internal combustion engine is dynamically loaded component. So the camshaft is about their cams with loaded additional torque when these cams on ram of a Valve gear accumulate and provided in the valve train return spring compressed. This torque acts on the actual camshaft rotation opposite.
- the equipped with a hydraulic adjusting camshaft is supported indirectly via the oil in the adjusting device, which is why the from Valve gear applied to the camshaft, dynamic torque too Pressure fluctuations of the hydraulic oil in the adjusting device and the supply lines leads.
- the valve can also be a controllable valve, which is specifically during the Phase in which the cam runs, is closed. Valves with a sufficient fast response, with no delay and with sufficient Accuracy control is not available in a wide range and very expensive.
- the object of the present invention is a system of the generic type with which an optimized Drückölmakers a camshaft adjuster can be realized and with which overcome the disadvantages known in the prior art in particular by the dynamic camshaft torque caused pressure fluctuations in the system is met, causing the adverse effects of pressure fluctuations on the adjustment speed and reduce the adjustment accuracy.
- a system of camshaft with at least one Cam and camshaft receptacle for supplying a device for Camshaft adjustment of an internal combustion engine with pressure oil in which the Camshaft is designed in the hollow type that an inner camshaft passage is formed and on the one hand this inner camshaft passage with the Adjustment device is connected and on the other hand at least one Camshaft connecting passage from the inner camshaft passage to the outer Lateral surface of the camshaft leads, with the camshaft receptacle over Has at least one supply line to the inner surface of the Camshaft holder leads and over the camshaft connecting channel and the inner camshaft channel with the adjustment is connectable and the Supplying the adjusting device with hydraulic oil is used, and thereby is characterized in that either in the outer circumferential surface of the camshaft in Area of the camshaft connecting channel or in the inner circumferential surface of the Camshaft receptacle in the region of the supply line at least one segment-like trained annular groove is provided, wherein the at least
- At least one segment-like annular groove has the inventive system via a forced control, without additional costly components must be provided for an effective Interruption of the connection between the supply line and the adjusting device ensures when the cam runs on the ram of the valve gear and a in the Valve gear provided return spring is compressed.
- connection does not exactly with the casserole phase of Cam coincide.
- the connection can on the one hand already before emergence the cam on the ram are interrupted and must not on the other hand necessarily be restored after reaching the maximum valve lift.
- the System according to the invention provides sufficient space for any controls of Hydraulic oil supply.
- this Circumstance can by appropriate design of the at least one annular groove Be taken into account, on the one hand by the expansion of the annular groove in Circumferential direction and on the other hand by the arrangement of at least one Ring groove relative to the cam or the camshaft connecting channel targeted Influence on the timing can be taken, to which the connection separated and restored between the supply line and the adjusting device becomes.
- the control of the adjusting device or the oil supply implemented in the camshaft bearing with the required at least one annular groove either in the outer circumferential surface of the camshaft or is arranged in the inner circumferential surface of the camshaft receptacle.
- the oil supply, which to supply the Camshaft bearing is provided with oil, at the same time as a supply line for used the adjustment. But it is crucial that the in the Camshaft intake revolved camshaft or the camshaft rotation as such is used to control the oil supply.
- the system according to the invention fulfills all the subtasks of a conventional pressure oil supply system, as described in DE 197 47 244 A1 is described, namely the bearing of the camshaft and the pressure oil supply the adjusting device.
- the system according to the invention by the arrangement of the at least one annular groove a control slot or a controller with which the Adjustment of the pressure oil supply in the emergence phase of the cam can be separated. That is, it is when using the invention System is not required to arrange a valve in the supply line or any other Provide control unit or the adjustment device with such a controller equip.
- the object of the invention is solved, namely a optimized pressure oil supply for a camshaft adjusting device to provide the known with the prior art disadvantages overcome and, in particular, the adverse effects from pressure fluctuations in the oil supply to the adjustment speed and the Reduce adjustment accuracy
- Advantageous embodiments of the system in which the Camshaft receptacle is divided into two and arranged in the cylinder head Storage saddle and one - in the mounted state - on this bearing saddle arranged bearing cover includes.
- a bearing of the camshaft in a one-piece camshaft mount is indeed at least possible.
- this requires either a built camshaft, when the camshaft, due to their cams, an insertion into the annular Camshaft recording does not allow over their free end, or a so-called Tunnel camshaft, which fits easily into the one-piece camshaft mount can be inserted.
- camshaft in the two-piece Camshaft receptacle is mounted.
- the camshaft is in a first Assembly step inserted in the bearing saddles, which is integral with the cylinder head are formed. They are already part of the cast cylinder head blank and get their final shape as part of a post-processing.
- a second Assembly step is the camshaft holder through a bearing cap completed, with the bearing cap arranged opposite the bearing saddle and with this is strained.
- a bearing cap for a Inlet camshaft and an adjacent bearing cap for an exhaust camshaft are formed in one piece in the form of a bearing bridge. This reduces the number of Components and not only by the fact that two bearing caps to one Bearing cover - namely the bearing bridge - are combined, but also in that for the attachment of a bearing bridge fewer fasteners must be provided as for the attachment of two lids.
- the sliding bearing two Plain bearing half shells includes.
- a plain bearing half shell is in the bearing saddle and arranged in the bearing cap.
- the Ring groove already in the manufacture of the plain bearing in a simple manner
- the board from which the sliding bearing is formed is provided with a window, wherein the window in the assembled state of the system according to the invention the Ring groove forms.
- embodiments of the system in which the bearing saddle is advantageous are advantageous and / or the bearing cover of the camshaft receptacle one over the entire Has circumferentially extending annular channel or have, wherein the annular channel - im assembled state - with the at least one segment-like annular groove in the plain bearing is in communication.
- the running over the entire circumference annular channel allows at Embodiments that have more than one annular groove, the supply of Ring grooves via a common supply line.
- the hydraulic oil passes through the Supply line into the annular channel, which distributes the oil to the individual annular grooves. Without Ring channel must for each annular groove a single lead in the Camshaft mount are provided.
- the camshaft a Cams and a segment-like annular groove is provided, wherein the annular groove in the circumferential direction an angle ⁇ ⁇ 320 °, or an angle ⁇ ⁇ 285 °, in particular an angle ⁇ ⁇ 270 ° sweeps.
- the casserole phase of the cam on the ram comprises between 40 ° and 75 ° Camshaft rotation angle (NWW). Consequently, in short casserole phases, the Ring groove in the circumferential direction over a larger angle ⁇ ⁇ 320 ° extend, wherein on the one hand the connection between the supply line and the adjusting device interrupted during the entire compression phase of the valve spring element and on the other hand the largest possible camshaft angle window for the Pressure oil supply and treatment of the adjusting available is provided.
- the annular groove in the circumferential direction longer or shorter.
- the angle data refer to a Embodiment with a cam and an annular groove, i. on the camshaft one A cylinder internal combustion engine with an inlet valve and / or a Exhaust valve.
- a camshaft of the type described with four cams, for example, at a four-cylinder in-line engine is used, in which each cylinder over a Inlet valve and / or an exhaust valve has.
- the versions also apply to four-cylinder in-line engines, where each Cylinder is equipped with two intake valves and / or two exhaust valves.
- the only difference is that the camshaft to be used then not has four, but has eight cams, which are offset in pairs by 90 ° are arranged, wherein in each case the two cams of a cylinder behind each other lie.
- the oil supply line must be disconnected from the adjustment as soon as one of the cams runs onto its associated plunger.
- one-cylinder internal combustion engine includes a complete revolution of the camshaft four casserole phases, so that in total four times the connection between the supply line and adjusting separately and must be restored.
- embodiments of the system in which each annular groove is advantageous are advantageous Circumferential direction an angle ⁇ ⁇ 40 ° or an angle ⁇ ⁇ 25 ° sweeps.
- FIG. 1 has already been described in connection with the description of the prior art Technology explained.
- FIGS. 2a and 2b show a first embodiment of the system 1 in FIG Cross-section.
- the system 1 has a camshaft seat 2, which is divided into two parts is and a bearing cap 3 and a bearing saddle 4 includes.
- the camshaft 9 is arranged and stored, wherein the Camshaft 9 in the illustrated embodiment, a cam 10 has.
- the system 1 has a segment-like annular groove 21 which in the inner circumferential surface 20 of the camshaft receptacle 2 in the supply line 5 is provided and extends in the circumferential direction.
- the pressure oil supply with the Adjustment device in conjunction. It is - as Figure 2b can be seen - the Adjustment device via the supply line 5, the annular groove 21, the Camshaft connecting passage 15 and the inner camshaft passage 14, the up to leads to the adjustment device, supplied with pressure oil.
- the lateral surface 19 of the camshaft 9 leads, communicates with the segment-like annular groove 21 in Connection.
- the pressure oil passes through this camshaft connecting passage 15 in the interior of the camshaft 9 d. H. in the inner camshaft passage 14 and of There from the adjustment.
- the annular groove 21 is designed and arranged in such a way that the connection between the supply line 5 and the adjusting device in the compression phase of Valve spring 27 d. H. is separated in the emergence phase of the cam 10.
- the separation is done by that the connection between the annular groove 21 and the camshaft connecting channel 15th will be annulled.
- the Camshaft connecting passage 15 is the Camshaft connecting passage 15 at its on the outer circumferential surface 19 of the Camshaft 9 lying end through the inner circumferential surface 20 of the Camshaft holder 2 closed.
- FIGS. 3a and 3b show a second embodiment of the system 1 in FIG Cross-section. Shown is the system 1 in Figure 3a at the beginning of the baking phase of Cam 10 on the plunger 26, whereas Figure 3b the system 1 after Exceeding the maximum valve lift shows. It is therefore in Figure 3a at a snapshot that the system 1 at the beginning of the compression phase of Valve spring 27 shows, whereas in Figure 2b is a snapshot acts, the system 1 in the expansion phase of the valve spring 27 shows.
- FIG. 4 shows a snapshot of a third embodiment of the system in FIG Cross-section. Shown is the system 1 at the beginning of the compression phase of Valve spring 27.
- the third Embodiment characterized in that on the one hand the camshaft 9 four Camshaft connecting channels 15,16,17,18 and four each at 90 ° on her Has circumferentially offset cams 10,11,12,13 and on the other hand the Camshaft mount with four leads 5,6,7,8 and four annular grooves 21,22,23,24 is provided.
- the four segment-like annular grooves 21,22,23,24 are in arranged the inner circumferential surface 20 of the camshaft receiver 2, wherein the Ring grooves 21,22,23,24 each an angle ⁇ ⁇ 30 ° sweep and in Circumference are regularly spaced.
- FIG. 5 shows a fourth embodiment of the system 1 in a perspective view Presentation.
- This embodiment is characterized in that a Bearing cover 3a for an intake camshaft and an adjacent bearing cap 3b for an exhaust camshaft are integrally formed in the form of a bearing bridge 25. This reduces the number of components and increases the rigidity of the whole System.
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
- Fig. 1
- eine Verstellvorrichtung nach dem Stand der Technik im Querschnitt,
- Fig. 2a
- eine erste Momentaufnahme einer ersten Ausführungsform des Systems im Querschnitt,
- Fig. 2b
- eine zweite Momentaufnahme der in Figur 2a dargestellten ersten Ausführungsform des Systems,
- Fig. 3a
- eine erste Momentaufnahme einer zweiten Ausführungsform des Systems im Querschnitt,
- Fig. 3b
- eine zweite Momentaufnahme der in Figur 3a dargestellten zweiten Ausführungsform des Systems,
- Fig. 4
- eine erste Momentaufnahme einer dritten Ausführungsform des Systems im Querschnitt, und
- Fig. 5
- eine vierte Ausführungsform des Systems in einer perspektivischen Darstellung.
- 1
- System
- 2
- Nockenwellenaufnahme
- 3
- Lagerdeckel
- 3a
- Lagerdeckel
- 3b
- Lagerdeckel
- 4
- Lagersattel
- 5
- Zuleitung
- 6
- Zuleitung
- 7
- Zuleitung
- 8
- Zuleitung
- 9
- Nockenwelle
- 10
- Nocken
- 11
- Nocken
- 12
- Nocken
- 13
- Nocken
- 14
- innerer Nockenwellenkanal
- 15
- Nockenwellenverbindungskanal
- 16
- Nockenwellenverbindungskanal
- 17
- Nockenwellenverbindungskanal
- 18
- Nockenwellenverbindungskanal
- 19
- äußere Mantelfläche der Nockenwelle
- 20
- innere Mantelfläche der Nockenwellenaufnahme
- 21
- segmentartig ausgebildete Ringnut
- 22
- segmentartig ausgebildete Ringnut
- 23
- segmentartig ausgebildete Ringnut
- 24
- segmentartig ausgebildete Ringnut
- 25
- Lagerbrücke
- 26
- Ventilstößel
- 27
- Ventilfeder
- 100
- Verstellvorrichtung
- 110
- Riemenrad
- 112
- Gehäusedeckel
- 114
- erstes Zwischenelement
- 116
- Verzahnung
- 118
- Kolbeneinrichtung
- 120
- erste Gegenverzahnung
- 122
- zweite Verzahnung
- 124
- zweites Zwischenelement
- 126
- zweite Gegenverzahnung
- 128
- Nockenwelle
- 132
- Verstellkammer
- 134
- Verstellkammer
- 136
- Leitung
- 138
- Leitung
Claims (14)
- System (1) aus Nockenwelle (9) mit mindestens einem Nocken (10,11,12,13) und Nockenwellenaufnahme (2) zur Versorgung einer Vorrichtung (100) zur Nockenwellenverstellung einer Brennkraftmaschine mit Drucköl, bei dem die Nockenwelle (9) in der Art hohl ausgeführt ist, daß ein innerer Nockenwellenkanal (14) ausgebildet wird und einerseits dieser innere Nockenwellenkanal (14) mit der Verstellvorrichtung (100) in Verbindung steht und andererseits mindestens ein Nockenwellenverbindungskanal (15,16,17,18) von dem inneren Nockenwellenkanal (14) zur äußeren Mantelfläche (19) der Nockenwelle (9) führt, wobei die Nockenwellenaufnahme (2) über mindestens eine Zuleitung (5,6,7,8) verfügt, die zur inneren Mantelfläche (20) der Nockenwellenaufnahme (2) führt und über den Nockenwellenverbindungskanal (15,16,17,18) und den inneren Nockenwellenkanal (14) mit der Verstellvorrichtung (100) verbindbar ist und der Versorgung der Verstellvorrichtung (100) mit Hydrauliköl dient,
dadurch gekennzeichnet, daß
entweder in der äußeren Mantelfläche (19) der Nockenwelle (9) im Bereich des Nockenwellenverbindungskanals (15,16,17,18) oder in der inneren Mantelfläche (20) der Nockenwellenaufnahme (2) im Bereich der mindestens einen Zuleitung (5,6,7,8) mindestens eine segmentartig ausgebildete Ringnut (21,22,23,24) vorgesehen ist, wobei die mindestens eine segmentartige Ringnut (21,22,23,24) in der Art ausgeführt und angeordnet ist, daß die Verbindung zwischen der Zuleitung (5,6,7,8) und der Verstellvorrichtung (100) in der Kompressionsphase eines durch den mindestens einen Nocken (10,11,12,13) der Nockenwelle (9) komprimierten Ventilfederelementes (27) eines über die Nockenwelle (9) betätigten Ventiltriebs unterbrochen ist. - System (1) nach Anspruch 1,
dadurch gekennzeichnet, daß
die Nockenwellenaufnahme (2) zweigeteilt ist und einen im Zylinderkopf angeordneten Lagersattel (4) und einen - im montierten Zustand - auf diesem Lagersattel (4) angeordneten Lagerdeckel (3) umfaßt. - System (1) nach Anspruch 2,
dadurch gekennzeichnet, daß
ein Lagerdeckel (3) für eine Einlaßnockenwelle und ein benachbarter Lagerdeckel (3) für eine Auslaßnockenwelle einteilig in Gestalt einer Lagerbrücke (25) ausgebildet sind. - System (1) nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß
die Nockenwellenaufnahme (2) ein Gleitlager zur Lagerung der Nockenwelle (9) aufweist, welches von dem Lagersattel (4) bzw. dem Lagerdeckel (3) aufgenommen wird. - System (1) nach Anspruch 4,
dadurch gekennzeichnet, daß
das Gleitlager eine - im montierten Zustand - einteilig ausgebildete Gleitlagerbuchse ist. - System (1) nach Anspruch 4,
dadurch gekennzeichnet, daß
das Gleitlager zwei Gleitlagerhalbschalen umfaßt. - System (1) nach einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet, daß
die mindestens eine segmentartig ausgebildete Ringnut (21,22,23,24) im Gleitlager vorgesehen ist. - System (1) nach Anspruch 7,
dadurch gekennzeichnet, daß
der Lagersattel (4) und/oder der Lagerdeckel (3) der Nockenwellenaufnahme (2) einen über den gesamten Umfang verlaufenden Ringkanal aufweist bzw. aufweisen, wobei der Ringkanal ― im montierten Zustand - mit der mindestens einen segmentartig ausgebildeten Ringnut (21,22,23,24) im Gleitlager in Verbindung steht. - System (1) nach Anspruch 8,
dadurch gekennzeichnet, daß
die Nockenwelle (9) einen Nocken (10) aufweist und eine segmentartig ausgebildete Ringnut (21) vorgesehen ist, wobei die Ringnut (21) in Umfangrichtung einen Winkel α < 320° überstreicht. - System (1) nach Anspruch 9,
dadurch gekennzeichnet, daß
die Ringnut (21) in Umfangrichtung einen Winkel α < 285° überstreicht. - System (1) nach Anspruch 9 oder 10,
dadurch gekennzeichnet, daß
die Ringnut (21) in Umfangrichtung einen Winkel α < 270° überstreicht. - System (1) nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß
die Nockenwelle (9) vier Nockenwellenverbindungskanäle (15,16,17,18) und vier bzw. acht paarweise hinter einander liegende, jeweils um 90° auf ihrem Umfang versetzte Nocken (10,11,12,13) aufweist und vier segmentartig ausgebildete Ringnuten (21,22,23,24) vorgesehen sind, wobei die Ringnuten (21,22,23,24) in Umfangrichtung jeweils einen Winkel α < 50° überstreichen, regelmäßig beabstandet in der äußeren Mantelfläche (19) der Nockenwelle (9) oder in der inneren Mantelfläche (20) der Nockenwellenaufnahme (2) angeordnet sind. - System (1) nach Anspruch 12,
dadurch gekennzeichnet, daß
die Ringnuten (21,22,23,24) in Umfangrichtung einen Winkel α < 40° überstreichen. - System (1) nach Anspruch 12 oder 13,
dadurch gekennzeichnet, daß
die Ringnuten (21,22,23,24) in Umfangrichtung einen Winkel α < 25° überstreichen.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20040100003 EP1550793B1 (de) | 2004-01-05 | 2004-01-05 | Nockenwellenversteller mit teilweise unterbrochener Druckölzufuhr |
DE200450009304 DE502004009304D1 (de) | 2004-01-05 | 2004-01-05 | Nockenwellenversteller mit teilweise unterbrochener Druckölzufuhr |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20040100003 EP1550793B1 (de) | 2004-01-05 | 2004-01-05 | Nockenwellenversteller mit teilweise unterbrochener Druckölzufuhr |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1550793A1 true EP1550793A1 (de) | 2005-07-06 |
EP1550793B1 EP1550793B1 (de) | 2009-04-08 |
Family
ID=34560269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040100003 Expired - Fee Related EP1550793B1 (de) | 2004-01-05 | 2004-01-05 | Nockenwellenversteller mit teilweise unterbrochener Druckölzufuhr |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1550793B1 (de) |
DE (1) | DE502004009304D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018206901A1 (de) * | 2018-05-04 | 2019-11-07 | Volkswagen Aktiengesellschaft | Zylinderkopfhaube mit Öffnung zur Durchführung und Lagerung einer Nockenwelle einer Brennkraftmaschine sowie Anordnung einer Nockenwelle an einer solchen Zylinderkopfhaube |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5309873A (en) * | 1991-11-28 | 1994-05-10 | Atsugi Unisia Corporation | Valve timing control system for internal combustion engine |
DE19850947A1 (de) * | 1998-11-05 | 2000-05-11 | Schaeffler Waelzlager Ohg | Vorrichtung zur Steuerung der Öffnungs- und Schließzeiten von Gaswechselventilen einer Brennkraftmaschine |
EP1113153A2 (de) * | 1999-12-28 | 2001-07-04 | BorgWarner Inc. | Mehrfachverstellbare und mit Motoröldruck angetriebene variable Nockenwellenzeitsteuerungseinrichtung |
-
2004
- 2004-01-05 EP EP20040100003 patent/EP1550793B1/de not_active Expired - Fee Related
- 2004-01-05 DE DE200450009304 patent/DE502004009304D1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5309873A (en) * | 1991-11-28 | 1994-05-10 | Atsugi Unisia Corporation | Valve timing control system for internal combustion engine |
DE19850947A1 (de) * | 1998-11-05 | 2000-05-11 | Schaeffler Waelzlager Ohg | Vorrichtung zur Steuerung der Öffnungs- und Schließzeiten von Gaswechselventilen einer Brennkraftmaschine |
EP1113153A2 (de) * | 1999-12-28 | 2001-07-04 | BorgWarner Inc. | Mehrfachverstellbare und mit Motoröldruck angetriebene variable Nockenwellenzeitsteuerungseinrichtung |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018206901A1 (de) * | 2018-05-04 | 2019-11-07 | Volkswagen Aktiengesellschaft | Zylinderkopfhaube mit Öffnung zur Durchführung und Lagerung einer Nockenwelle einer Brennkraftmaschine sowie Anordnung einer Nockenwelle an einer solchen Zylinderkopfhaube |
Also Published As
Publication number | Publication date |
---|---|
DE502004009304D1 (de) | 2009-05-20 |
EP1550793B1 (de) | 2009-04-08 |
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