EP0163046A1 - Device for adjusting the angle of a shaft, especially of a camshaft relative to a drive shaft - Google Patents

Device for adjusting the angle of a shaft, especially of a camshaft relative to a drive shaft Download PDF

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Publication number
EP0163046A1
EP0163046A1 EP85103624A EP85103624A EP0163046A1 EP 0163046 A1 EP0163046 A1 EP 0163046A1 EP 85103624 A EP85103624 A EP 85103624A EP 85103624 A EP85103624 A EP 85103624A EP 0163046 A1 EP0163046 A1 EP 0163046A1
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EP
European Patent Office
Prior art keywords
shaft
drive wheel
sensors
pulse generators
bore
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Granted
Application number
EP85103624A
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German (de)
French (fr)
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EP0163046B1 (en
Inventor
Karl Heinz Bruss
Hans Baumgartner
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Pierburg GmbH
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Pierburg GmbH
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Publication of EP0163046B1 publication Critical patent/EP0163046B1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34Valve-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
    • F01L1/344Valve-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
    • F01L1/34403Valve-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

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • Such a device is known from European patent application 0 069 868 for an angular adjustment of a camshaft relative to a drive wheel.
  • a speed-dependent and load-dependent angle adjustment for controlling an internal combustion engine is to be achieved, wherein a reference angle position and an angular rotation of the engine crankshaft, which is connected to the drive wheel, are to be determined via pulse generators and sensors and are to be processed into a control signal.
  • This control value signal is applied to a setting device that can be driven by several drive motors and the position of which is indicated as an actual value signal by a multi-turn potentiometer.
  • This device is very complex and complicated and requires the provision of a considerable adjustment performance. The actual value acquisition also appears to be too imprecise, since the actual value is not displayed directly by the camshaft.
  • a further device for changing the valve timing in which the camshaft is automatically reset at low engine outputs and is advanced at higher outputs.
  • a coupling device has two pistons pressurized with engine oil in cylindrical bores which, acting in the same direction, are intended to effect an angular adjustment.
  • active adjustment is only possible in one direction.
  • the object of the invention is therefore to design a device of the type mentioned so that active adjustment in opposite directions is possible, the mechanical outlay being limited.
  • a detection baw, control of the angle adjustment with high accuracy should be made possible for this.
  • a versatile device for controlling a coupling device which is mechanically and hydraulically very simple. Precise detection of the angle of adjustment has become possible due to the pulse generators attached directly to the coupling elements shaft and drive wheel.
  • the digital recording of the reference or reference signals characterizing the angle adjustment and the counted actual value signals provides a link to a scaled-down map control without analog / digital conversion.
  • the angle can be adjusted in any direction, so that a large adjustment power must be provided.
  • Fig. 1 shows the device according to the invention consisting of a bearing block 1 with two bearing points 2, 3, in which a shaft 6 constructed from two parts 4, 5 is inserted, a centering pin 7 of the shaft part 4 simultaneously having a bearing pin 8 of a toothing 9 Drive wheel 10 forms.
  • the shaft part 4 has two circumferential oil grooves 11, 12 in the area of the bearing point 2, which are aligned with two oil bores 13, 14 of the bearing block 1 opening out in the bearing point 2.
  • Each of these bores 13, 14 is connected via a throttle 15 to a pressure line 16 of an oil pump 17 and has a relief bore 18, 19 which is controlled by an electrically actuated valve 20, 21 and opens into an oil reservoir 22.
  • the shaft 6 and the drive wheel 10 have pulse generators 36, 38 which are arranged on the outer circumference of the jewels and are intended to act on sensors 37, 39 fastened to the bearing block 1.
  • FIG. 3 shows, as a tell view, an embodiment variant of the device shown in FIG. 1, which has differences compared to FIG. 1.
  • the construction sites not dealt with in more detail and designated by the same numbers are identical to those of FIGS. 1 and 2.
  • a shaft part 40 is shown, which corresponds to the shaft part 4 of FIG. 1 and forms the shaft 6 with the shaft part 5, not shown, which is inserted into the bearing block consisting of the bearing point 3 not shown and a bearing point 41 shown.
  • the shaft part 40 has a bore 42 arranged in the center in the axial direction with a multiply offset bushing 43, in which a slide 44 is arranged so as to be axially displaceable.
  • Rod 47 can be adjusted against the force of two springs 48, 49 so that three defined slide positions can be reached, which are shown as the central position in Fig. 3 and opposite end positions in Fig. 4 and 5.
  • Slider 44 controls control bores 54, 55 arranged in the bushing 43 with cylinder sections 52, 53 formed by free rotations 50, 51, which are connected via external grooves 56, 57 of the bushing 43 to the bores 23, 24 leading to the cylinders 26, 27.
  • the space 58 existing due to the free rotation 50 between the cylinder sections 52, 53 is connected via a bore 59 arranged in the bush 43 and opening into a groove 60 of the bush 43 to a relief bore 61, which extends from the end of the shaft part 40 into the space inside the cover 45 opens out.
  • Shaft part 40 has in the area of bearing point 41 an oil groove 62 which overlies a pressure oil bore 63 which is connected to the pump, so that oil via oil groove 62 and transverse bores 64, 65 and a longitudinal bore 66 in shaft portion 40 between slide 44 and bushing 43 on the one hand and slide 44 and the bottom of the bore 42 on the other hand can flow formed Kamnem 67, 68 and pressurizes them.
  • the slide 44 is in the end position, in which oil can flow from chamber 68 into the control bore 55 and from there to the cylinder 27 and at the same time oil flows out of the cylinder 26, since the cylinder sections 52, 53 the control bores 54, 55 have released.
  • the oil f1 flowing out of the cylinder 26 via the control bore 54 and the space 58 into the relief bore 61 discharges into the space below the hood.
  • Fig. 5 shows the slider 44 in the opposite end position, in which ⁇ 1 flows through the control bore 54 into the cylinder 26 and ⁇ 1 flows out of the cylinder 27 above the control bore 55 and the relief bore 61.
  • the actuator 44 can be electromagnetic or pneumatic, in which case the pneumetic could be actuated by appropriate pressurization (possibly from a recipient or a pressure source) via an ejecting mechanism (not shown).
  • F ig. 6 shows a section of the shaft part 4 or 40 and the drive wheel 10, in which, in one of the end positions of the angular adjustment between the drive wheel 10 and the shaft 6, a spring-loaded connecting element 69 (piston) snaps into a recess 70 (bore) in the drive wheel 10 and thereby a positive connection between the drive wheel 10 and the shaft 6 is made.
  • This connection is always broken when the respective cylinder is pressurized with oil pressure, ie the oil pressure acts on the connecting element 69, which is simultaneously designed as a piston, so that it is moved against the force of a spring 71 and cancels the positive connection.
  • connection element 69 which is actuated as a function of the oil pressure in the other cylinder, i.e. since this cylinder is pressure-relieved, the connecting element 69 designed as a piston is also relieved of pressure, so that the spring 71 makes an adjustment against the drive wheel 10 and engages of the connecting element 69 in the recess 70 when they can overlap.
  • FIG. 7 shows a block diagram from which the circuit for detecting the angular adjustment and for controlling the valves 20, 21 causing the adjustment of the device from FIGS. 1 and 2 can be seen.
  • the shaft 6 and the drive wheel 10 are shown as circles and have the pulse generators 36, 38, which generate a signal when the sensors 37, 39 are approached.
  • the signal from the pulse generator 36 of the drive wheel 10 is evaluated as a reference signal and corresponds to the maximum possible angular adjustment.
  • the signal of the pulse generator 38 of the shaft 6 leads as an actual value signal at the maximum angle adjustment to the reference signal and then has a time length which is the same as the reference signal. It is provided that the actual value signal activates a counter 40 and that the reference signal activates a further counter 41 for the signal duration and at the same time stops the counter 40 with the beginning of the signal. During their activation, the counters 40, 41 count the clocks of a clock generator 42 operating at a constant frequency. The counting results are fed to a plate 43, the result of which, as a ratio of the counting results, reveals the angular adjustment between the 0 and the maximum value. This result can be done in the usual way by means of a correction value memory 44 and possibly by means of further information (speed, load, etc.) can be changed into a correction signal which can be supplied to the valves 20, 21 as an electrical signal via an amplifier 45.
  • Fig. 8 shows an alternative circuit, wobel the shaft 6 has a number of pulse generators 38, the signals from the sensor 39 are counted by a counter 46 until the pulse generator 36 of the drive wheel 10 via the sensor 37 generates a signal that the counter 46 stops.
  • the counting result provides information about the angular adjustment, since each pulse is assigned a specific determined angular adjustment, and can be changed into a correction signal by means of a correction value memory 47 and, if necessary, by means of further information signals can be supplied.
  • the circuit according to FIGS. 7 and 8 can also be used in connection with the device according to FIG. 3, but the device then does not require a device according to FIG. 6 for the form-fitting connection of the drive wheel 10 and the shaft 6 in the end positions of the angular adjustment.
  • the electrical signal is applied directly to this when using an electromagnetic actuator or, when using a pneumatic actuator, to an electrovalve controlling a linkage connection between the actuator and a recipient or a pressure source.
  • the desired angular adjustment is saved by the slide position shown in FIG. 3, in which no oil can flow into or out of the cylinder (hydraulic locking), or by the positive connection between drive wheel 10 and shaft 6.

Abstract

Vorrichtung zur Winkelverstellung einer Welle, insbesondere Nockenwelle, gegenüber einem Antriebsrad, mit der eine aktive Verstellung in beide Richtungen möglich ist und darüber hinaus die Stellung der Welle und des Antriebsrades durch Impulsgeber und Sensoren feststellbar und in einer elektronischen Schaltung zur Feststellung der Winkelverstellung und Steuerung austwerbar ist.Device for angular adjustment of a shaft, in particular camshaft, relative to a drive wheel, with which an active adjustment in both directions is possible and, in addition, the position of the shaft and the drive wheel can be determined by pulse generators and sensors and can be evaluated in an electronic circuit for determining the angle adjustment and control is.

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device according to the preamble of patent claim 1.

Eine derartige Einrichtung ist aus der europäischen Patentanmeldung 0 069 868 für eine Winkelverstellung einer Nockenwelle gegenüber einem Antriebsrad bekannt. Mit dieser Vorrichtung soll eine drehzahl- und lastabhängige Winkelverstellung zur Steuerung einer Brennkraftmaschine erreicht werden, wobei über Impulsgeber und Sensoren eine Bezugswinkelstellung und eine Winkeldrehung der Motorkurbelwelle, die mit dem Antriebsrad verbunden ist, festgestellt und zu einem Stellwertsignal verarbeitet werden sollen. Dieses Stellwertsignal wird dabei einem Einstellgerät, das von mehreren Antriebsmotoren antreibbar und dessen Stellung von einem Mehrgangspotentiometer als Istwertsignal angezeigt ist, aufgeschaltet. Diese Vorrichtung ist sehr aufwendig und kompliziert aufgebaut und benötigt die Bereitstellung einer beträchtlichen Verstell-Leistung. Auch die Istwerterfassung erscheint als zu ungenau, da der Istwert nicht direkt von der Nockenwelle angezeigt wird.Such a device is known from European patent application 0 069 868 for an angular adjustment of a camshaft relative to a drive wheel. With this device, a speed-dependent and load-dependent angle adjustment for controlling an internal combustion engine is to be achieved, wherein a reference angle position and an angular rotation of the engine crankshaft, which is connected to the drive wheel, are to be determined via pulse generators and sensors and are to be processed into a control signal. This control value signal is applied to a setting device that can be driven by several drive motors and the position of which is indicated as an actual value signal by a multi-turn potentiometer. This device is very complex and complicated and requires the provision of a considerable adjustment performance. The actual value acquisition also appears to be too imprecise, since the actual value is not displayed directly by the camshaft.

Aus der DE-OS 20 32 581 ist eine weitere Vorrichtung zur Veränderung der Ventilsteuerzeiten bekannt, bei der die Nockenwelle bei geringen Leistungen des Motors selbsttätig rückverstellt und bei größeren Leistungen vorverstellt wird. Hierfür weist eine Kopplungseinrichtung zwei motor-drucköl-beaufschlagte Kolben in zylindrischen Bohrungen auf, die, gleichsinnig wirkend, eine Winkelverstellung bewirken sollen. Für die Rückstellung dieser Verstellung sind Jedoch, abgesehen von der durch Ölaustritt zwischen dem Kolben und Zylinder ermöglichten Rückstellung, keine Mittel angegeben, d. h. eine aktive Verstellung ist nur in eine Richtung möglich. Aufgabe der Erfindung Ist es daher, eine Vorrichtung der genannten Art so auszubilden, daß eine aktive Verstellung in entgegengesetzten Richtungen mölich ist, wobei der mechanische Aufwand In Grenzen gehaiten ist. Darüber hinaus soll hierfür eine Erkennung baw, Steuerung der Winkelverstellung mit hoher Genauigkeit ermöolicht werden.From DE-OS 20 32 581 a further device for changing the valve timing is known, in which the camshaft is automatically reset at low engine outputs and is advanced at higher outputs. For this purpose, a coupling device has two pistons pressurized with engine oil in cylindrical bores which, acting in the same direction, are intended to effect an angular adjustment. For the resetting of this adjustment, however, apart from the resetting made possible by oil leakage between the piston and cylinder, no means are indicated, i. H. active adjustment is only possible in one direction. The object of the invention is therefore to design a device of the type mentioned so that active adjustment in opposite directions is possible, the mechanical outlay being limited. In addition, a detection baw, control of the angle adjustment with high accuracy should be made possible for this.

Diese Aufgabe ist nach der Erfindung durch die Merkmale des Patentanspruchs 1 gelöst. In den Unteransprüchen werden Merkmaie vorteilhafter Weiterbildungen der Erfindung genannt.This object is achieved according to the invention by the features of claim 1. Characteristics of advantageous developments of the invention are mentioned in the subclaims.

Mit der Erfindung Ist eine vielseitig verwendbare Vorrichtung zur Steuerung einer Kopplungseinrichtung verwirklicht worden, die mechanisch und hydraulisch sehr einfach aufgebaut ist. Durch sirekt an den Kopplungsgliedern Welle und Antriebsrad angerchete impulsgeber Ist eine genaue Verstellwinkelerkennung möglich geworden. Durch die digitale Aufzeichnung der die Winkelverstellung kennzeichnenden Referenz- bzw. Bezugssignale und der ausgezähiten istewertsignale Ist eine Verknüpfung mit einer abgespelcherten Kennfeldsteuerung ohne Analog/Digital-Umwandlung gegeben. Die Winkelverstellung kann in jede Richtung er- folgen, eine daß eine große Verstell-Leistung bereitgestellt werden muß, Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben.With the invention, a versatile device for controlling a coupling device has been realized, which is mechanically and hydraulically very simple. Precise detection of the angle of adjustment has become possible due to the pulse generators attached directly to the coupling elements shaft and drive wheel. The digital recording of the reference or reference signals characterizing the angle adjustment and the counted actual value signals provides a link to a scaled-down map control without analog / digital conversion. The angle can be adjusted in any direction, so that a large adjustment power must be provided. An embodiment of the invention is shown in the drawing and is described below.

Es zeigen:

  • Fig. 1 eine erfindungsgemäße Ausführung einer Kopplungseinrichtung In einer Ansicht mit Teilschnitten,
  • Fig. 2 einen Querschnitt durch die Welle und das Antriebsrad nach Fig. 1,
  • Fig. 3, 4 und 5 Teilschnitte einer Ausführungsvariante der Fig. 1,
  • Fig. 6 eine Verriegelung,
  • Fig. 7 ein Blockschaltbild einer Schaltung zur Erkennung und Steuerung der Winkelverstellung,
  • Fig. 8 ein Blockschaltbild einer alternativen Schaltung.
Show it:
  • 1 shows an embodiment of a coupling device according to the invention in a view with partial sections,
  • 2 shows a cross section through the shaft and the drive wheel according to FIG. 1,
  • 3, 4 and 5 partial sections of an embodiment of FIG. 1,
  • 6 is a lock,
  • 7 is a block diagram of a circuit for detecting and controlling the angle adjustment,
  • Fig. 8 is a block diagram of an alternative circuit.

Fig. 1 zeigt die erfindungsgemäße Vorrichtung bestehend aus einem Lagerbock 1 mit zwei Lagerstellen 2, 3, in den eine aus zwei Teilen 4, 5 gebaute Welle 6 eingesetzt ist, wobei ein Zentrierzapfen 7 des Wellenteils 4 gleichzeitig einen Lagerzapfen 8 eines eine Verzahnung 9 aufweisenden Antriebsrades 10 bildet. Das Wellenteil 4 weist im Bereich der Lagerstelle 2 zwei umlaufende ölnuten 11, 12 auf, die mit zwei in der Lagerstelle 2 ausmündenden Ölbohrungen 13, 14 des Lagerbockes 1 fluchten. Jede dieser Bohrungen 13, 14 ist über Je eine Drossel 15 mit einer Druckleitung 16 einer Ölpumpe 17 verbunden und weist eine Entlastungsbohrung 18, 19 auf, die von einem elektrisch betätigbaren Ventil 20, 21 kontrolliert wird und in ein Ölreservoir 22 ausmündet.Fig. 1 shows the device according to the invention consisting of a bearing block 1 with two bearing points 2, 3, in which a shaft 6 constructed from two parts 4, 5 is inserted, a centering pin 7 of the shaft part 4 simultaneously having a bearing pin 8 of a toothing 9 Drive wheel 10 forms. The shaft part 4 has two circumferential oil grooves 11, 12 in the area of the bearing point 2, which are aligned with two oil bores 13, 14 of the bearing block 1 opening out in the bearing point 2. Each of these bores 13, 14 is connected via a throttle 15 to a pressure line 16 of an oil pump 17 and has a relief bore 18, 19 which is controlled by an electrically actuated valve 20, 21 and opens into an oil reservoir 22.

Von den Öinuten 11, 12 geht Jewells eine Bohrung 23, 24 zu jewells einem, wie aus Fig. 2 ersichtlich, einen Kolben 25 aufweisenden Zylinder 26, 27, wobei die beiden Zylinder 26, 27 symmetrisch angeorchet sind. In einer die Bohrungen 23, 24 verbindenden Querbohrung 28 ist ein beidseitig federbelasteter Schieber 29 angeorchet, der die Querschnitte der zu den Zylindern 26, 27 führenden Bohrungen 23, 24 verschließt, wenn Druckgleichheit in den Bohrungen 23, 24 herrscht, wobei die Stirnflächen 30, 31 des Schiebers 29 über Jewells eine Leitung 32 aus einer der Bohrungen 23, 24 mit dem dort herrschenden Druck beaufschlagt sind.From the oil minutes 11, 12, Jewells goes through a bore 23, 24 to a cylinder 26, 27, as shown in FIG. 2, each with a piston 25, the two cylinders 26, 27 being symmetrically orchestrated. In a transverse bore 28 connecting the bores 23, 24, a slide 29 is spring-loaded on both sides, which closes the cross-sections of the bores 23, 24 leading to the cylinders 26, 27 when there is pressure in the bores 23, 24, the end faces 30, 31 of the slide 29 via Jewells a line 32 from one of the bores 23, 24 are acted upon by the pressure prevailing there.

Hierdurch wird erreicht, daß bei ungleichem Druck in den Bohrungen 23, 24, d. h. wenn eines der Ventile 20, 21 geöffnet ist, der Schieber 29 in die dann druckentlastete Bohrung eingeschoben ist, so daß die Querschnitte der Bohrungen 23, 24 geöffnet sind und Öl in einen der Zylinder 26, 27 hinein und aus dem anderen heraus fileßen kann. Hierdurch wird eine entsprechende Verstellung der Kolben 25 erreicht, wobei der unter Druckeinwirkung aus dem Zylinder herausgedrückte Kolben 25 dann gegen eine Kugel 33 wirkt, die, wie aus Fig. 2 ersichtlich ist, sich an in bezug auf einen konzentrischen Umfang zur Welle 6 tangential verlaufende Reaktionskräfte verursachende Flächen 34, 35 der Welle 6 und des Antriebsrades 10 abstützt, so daß eine Winkelverstellung erreicht wird. Die Winkelverstellung kann durch die symmetrisch angeordneten Zylinder 26, 27 in beide Richtungen erfolgen.This ensures that at unequal pressure in the bores 23, 24, d. H. when one of the valves 20, 21 is open, the slide 29 is inserted into the then pressure-relieved bore, so that the cross sections of the bores 23, 24 are open and oil can flow into and out of one of the cylinders 26, 27. This achieves a corresponding adjustment of the pistons 25, the piston 25 pushed out of the cylinder under the action of pressure then acting against a ball 33 which, as can be seen from FIG. 2, extends tangentially with respect to a concentric circumference to the shaft 6 Surfaces 34, 35 of the shaft 6 and the drive wheel 10 causing reaction forces are supported so that an angular adjustment is achieved. The angle can be adjusted in both directions by the symmetrically arranged cylinders 26, 27.

Die welle 6 und das Antriebsrad 10 weisen Impulsgeber 36, 38 auf, die Jewells am äußeren Umfang angeordnet sind und auf am Lagerbock 1 befestigte Sensoren 37, 39 einwirken sollen.The shaft 6 and the drive wheel 10 have pulse generators 36, 38 which are arranged on the outer circumference of the jewels and are intended to act on sensors 37, 39 fastened to the bearing block 1.

Fig. 3 zeigt als Tellansicht eine Ausführungsvariante der in Fig. 1 dargestellten Vorrichtung, die gegenüber Fig. 1 Unterschiede aufweist. Die nicht näher behandelten und die mit den gleichen Nummern bezeichneten Bautelle sind mit denen der Fig. 1 und 2 identisch.FIG. 3 shows, as a tell view, an embodiment variant of the device shown in FIG. 1, which has differences compared to FIG. 1. The construction sites not dealt with in more detail and designated by the same numbers are identical to those of FIGS. 1 and 2.

In Fig. 3 ist ein Wellenteil 40 dargestellt, das dem Wellenteil 4 der Fig. 1 entspricht und mit dem nicht dargestellten Wellenteil 5 die Welle 6 bildet, die in den aus der nicht dargestellten Lagerstelle 3 und einer dargestellten Lagerstelle 41 bestehenden Lagerbock eingesetzt ist.In Fig. 3, a shaft part 40 is shown, which corresponds to the shaft part 4 of FIG. 1 and forms the shaft 6 with the shaft part 5, not shown, which is inserted into the bearing block consisting of the bearing point 3 not shown and a bearing point 41 shown.

Das Wellenteil 40 weist eine in Axialrichtung mittig angeordnete Bohrung 42 mit einer mehrfach abgesetzten Buchse 43 auf, in der axial verschieblich ein Schieber 44 angeordnet ist, der durch einen drehfest an einer Abdeckhaube 45 befestigten Steller 46 über eine in den Schieber 44 eingeführte. Stange 47 gegen die Kraft zweier Federn 48, 49 verstellt werden kann, so daß drei definierte Schieberstellungen erreichbar sind, die als Mittelstellung in Fig. 3 und entgegengesetzte Endstellungen in Fig. 4 und 5 dargestellt sind. Schieber 44 steuert mit durch Freidrehungen 50, 51 gebildeten Zylinderabschnitten 52, 53 in der Buchse 43 angeordnete Steuerbohrungen 54, 55, die über außenliegende Nuten 56, 57 der Buchse 43 mit den zu den Zylindern 26, 27 führenden Bohrungen 23, 24 verbunden sind. Der durch die Freidrehung 50 zwischen den Zylinderabschnitten 52, 53 bestehende Raum 58 steht über eine in der Buchse 43 angeordnete und in eine Nut 60 der Buchse 43 einmündende Bohrung 59 mit einer Entlastungsbohrung 61 in Verbindung, die stirnseitig aus dem Wellenteil 40 in den Raum innerhalb der Abdeckhaube 45 ausmündet.The shaft part 40 has a bore 42 arranged in the center in the axial direction with a multiply offset bushing 43, in which a slide 44 is arranged so as to be axially displaceable. Rod 47 can be adjusted against the force of two springs 48, 49 so that three defined slide positions can be reached, which are shown as the central position in Fig. 3 and opposite end positions in Fig. 4 and 5. Slider 44 controls control bores 54, 55 arranged in the bushing 43 with cylinder sections 52, 53 formed by free rotations 50, 51, which are connected via external grooves 56, 57 of the bushing 43 to the bores 23, 24 leading to the cylinders 26, 27. The space 58 existing due to the free rotation 50 between the cylinder sections 52, 53 is connected via a bore 59 arranged in the bush 43 and opening into a groove 60 of the bush 43 to a relief bore 61, which extends from the end of the shaft part 40 into the space inside the cover 45 opens out.

Wellenteil 40 weist im Bereich der Lagerstelle 41 eine Ölnut 62 auf, die eine Druckölbohrung 63 überlagert, die mit der Pumpe in Verbindung steht, so daß Öl über die Ölnut 62 und Querbohrungen 64, 65 und eine Längsbohrung 66 im Wellenteil 40 zu zwischen Schieber 44 und Buchse 43 einerseits und Schieber 44 und Grund der Bohrung 42 andererseits gebildete Kamnem 67, 68 strömen kann und diese unter Druck setzt.Shaft part 40 has in the area of bearing point 41 an oil groove 62 which overlies a pressure oil bore 63 which is connected to the pump, so that oil via oil groove 62 and transverse bores 64, 65 and a longitudinal bore 66 in shaft portion 40 between slide 44 and bushing 43 on the one hand and slide 44 and the bottom of the bore 42 on the other hand can flow formed Kamnem 67, 68 and pressurizes them.

Bei der Schleberstellung nach Fig . 3 verschießen die Zylinderabschnitte 52, 53 die Steuerbohrungen 54, 55, so daß kein Öl in die oder aus den Zylindern strömen kann. Es besteht somit der gleiche Zustand, wie er durch den Schleber 29 in Fig. 1 erreicht wird.In the fuselage position according to Fig. 3, the cylinder sections 52, 53 close the control bores 54, 55 so that no oil can flow into or out of the cylinders. There is thus the same state as is achieved by the slider 29 in FIG. 1.

Nach Fig. 4 steht der Schieber 44 in der Endstellung, bei der Öl aus Kammer 68 in die Steuerbohrung 55 und von dort zum Zylinder 27 strömen kann und gleichzeitig Öl aus dem Zylinder 26 abfließen, da die Zylinderabschnitte 52, 53 die Steuerbohrungen 54, 55 frei- gegeben haben. Das aus dem Zylinder 26 über die Steuerbohrung 54 und den Raum 58 in die Entlastungsbohrung 61 strömende Ö1 f1 leßt in den Raum unterhalb der Abeckhaube ab.4, the slide 44 is in the end position, in which oil can flow from chamber 68 into the control bore 55 and from there to the cylinder 27 and at the same time oil flows out of the cylinder 26, since the cylinder sections 52, 53 the control bores 54, 55 have released. The oil f1 flowing out of the cylinder 26 via the control bore 54 and the space 58 into the relief bore 61 discharges into the space below the hood.

Fig. 5 zelgt den Schleber 44 in der entgegengesetzten Endstellung, bei der Ö1 über die Steuerbohrung 54 in den Zyllnder 26 strömt und Ö1 aus dem Zyllnder 27 Ober die Steuerbohrung 55 und die Entlastungsbohrung 61 abflleßt.Fig. 5 shows the slider 44 in the opposite end position, in which Ö1 flows through the control bore 54 into the cylinder 26 and Ö1 flows out of the cylinder 27 above the control bore 55 and the relief bore 61.

Durch beide Endstellungen wird erreicht, daß der unter Druckeinwirlaung aus dem Zylinder herausgedrückte Kolben 25, wie in Fig. 2 dargestellt und berelts beschrieben, gegen die Kugel 33 wirkt und dadurch die Winkelverstellung erfolgt. Der Steller 44 kann elektromagnetlscher oder pneumetischer Art sein, wobel der pneumet ische durch entsprechende Druckbeaufschlagung (ggfs. aus einem Rezipienten oder einer Druckquelle) über ein Ekejtrivebtkl (nicht dargestellt) betätigbar wäre.It is achieved by both end positions that the piston 25, which is pushed out of the cylinder under the action of pressure, acts against the ball 33, as shown in FIG. 2 and described, and the angle is adjusted thereby. The actuator 44 can be electromagnetic or pneumatic, in which case the pneumetic could be actuated by appropriate pressurization (possibly from a recipient or a pressure source) via an ejecting mechanism (not shown).

Fig. 6 zeigt einen Auschnitt des Wellentells 4 bzw. 40 und des Antriebsrades 10, bei dem in einer der End lageb der Winkelverstellung zwischen dem Antriebsrad 10 und der Welle 6 ein federbelastetes Verbindungselement 69 (Kolben) in eine Ausnehmung 70 (Bohrung) des Antrlebsrades 10 eingerastet und dadurch eine formschlüsslge Verbindung zwischen dem Antrlebsrad 10 und der Welle 6 hergestellt ist. Dlese Verbindung wird lmmer dann aufgehoben, wenn der Jewellige Zyllnder mit Öldruck beaufschlagt ist, d. h. der Öldruck wirkt auf das gleichzeitig als Kolben ausgebildete Verbindungselement 69, so daß dieses gegen die Kraft einer Feder 71 bewegt wird und den Formschluß aufhebt. Nach erfolgter Verstellung wird ein erneuter Formschluß über das vom Öldruck im anderen Zylinder abhängig betätigte Verbindungselement 69 hergestellt, d. h., da dieserZylinder druckentlastet ist, ist auch das als Kolben ausgebildete Verbindungselement 69 druckentlastet, so daß die Feder 71 eine Verstellung gegen das Antriebsrad 10 und Einrasten des Verbindungselementes 69 in die Ausnehmung 70 bewirkt, wenn diese in Überdeckung komnen. F ig. 6 shows a section of the shaft part 4 or 40 and the drive wheel 10, in which, in one of the end positions of the angular adjustment between the drive wheel 10 and the shaft 6, a spring-loaded connecting element 69 (piston) snaps into a recess 70 (bore) in the drive wheel 10 and thereby a positive connection between the drive wheel 10 and the shaft 6 is made. This connection is always broken when the respective cylinder is pressurized with oil pressure, ie the oil pressure acts on the connecting element 69, which is simultaneously designed as a piston, so that it is moved against the force of a spring 71 and cancels the positive connection. After adjustment, a new positive connection is made via the connecting element 69, which is actuated as a function of the oil pressure in the other cylinder, i.e. since this cylinder is pressure-relieved, the connecting element 69 designed as a piston is also relieved of pressure, so that the spring 71 makes an adjustment against the drive wheel 10 and engages of the connecting element 69 in the recess 70 when they can overlap.

Fig. 7 zeigt ein Blockschaltbild, aus dem die Schaltung zur Erkennung der Winkelverstellung und zur Steuerung der die Verstellung bewirkenden Ventile 20, 21 der Vorrichtung aus Fig. 1 und 2 erkennbar ist.FIG. 7 shows a block diagram from which the circuit for detecting the angular adjustment and for controlling the valves 20, 21 causing the adjustment of the device from FIGS. 1 and 2 can be seen.

Die Welle 6 und das Antriebsrad 10 sind als Kreise dargestellt und weisen die Impulsgeber 36, 38 auf, die bei Annäherung an die Sensoren 37, 39 in diesen ein Signal erzeugen.The shaft 6 and the drive wheel 10 are shown as circles and have the pulse generators 36, 38, which generate a signal when the sensors 37, 39 are approached.

Das Signal des Impulsgebers 36 des Anrtriebsrades 10 wird als Referenzsignal gewertet und entspricht der maximal möglichen Winkelverstellung.The signal from the pulse generator 36 of the drive wheel 10 is evaluated as a reference signal and corresponds to the maximum possible angular adjustment.

Das Signal des Impulsgebers 38 der Welle 6 eilt als Istwertsignal bei der maximalen Winkelverstellung dem Referenzsignal voraus und weist dann eine dem Referenzsignal gleiche Zeitlänge auf. Hierbei Ist vorgesehen, daß das Istwertsignal einen Zähler 40 aktiviert und daß das Referenzsignal einen weiteren Zähler 41 für die Signaldauer aktiviert und gleichzeitig den Zähler 40 mit dem Signalanfang stoppt. Während ihrer Aktivierung zählen die Zähler 40, 41 Takte eines mit konstanter Frequenz arbeitenden Taktgebers 42. Die Zählergebnisse werden einem Teller 43 zugeführt, dessen Ergebnis als Verhältnis der Zählerergebnisse die Winkelverstellung zwischem dem 0- und dem Maximalwert erkennen läßt. Dieses Ergebnis kann in üblicher Weise mittels eines Korrektunwertspeichers 44 und ggfs. mittels weiterer Informet lonsslgnale (Drehzahl, Last etc.) in ein Korrektursignal verändert werden, das über einen Verstärker 45 den Ventllen 20,21 als elektrisches Signal zugeführt werden kann.The signal of the pulse generator 38 of the shaft 6 leads as an actual value signal at the maximum angle adjustment to the reference signal and then has a time length which is the same as the reference signal. It is provided that the actual value signal activates a counter 40 and that the reference signal activates a further counter 41 for the signal duration and at the same time stops the counter 40 with the beginning of the signal. During their activation, the counters 40, 41 count the clocks of a clock generator 42 operating at a constant frequency. The counting results are fed to a plate 43, the result of which, as a ratio of the counting results, reveals the angular adjustment between the 0 and the maximum value. This result can be done in the usual way by means of a correction value memory 44 and possibly by means of further information (speed, load, etc.) can be changed into a correction signal which can be supplied to the valves 20, 21 as an electrical signal via an amplifier 45.

Fig. 8 zeigt eine alternative Schaltung, wobel die Welle 6 eine Anzahl von Impulsgebern 38 aufweist, deren Signale über den Sensor 39 von einem Zähler 46 so lange gezählt werden, bis der Impulsgeber 36 des Antriebsrades 10 über den Sensor 37 ein Signal erzeugt, das den Zähler 46 stoppt. Das Zählergebnis gibt Auskunft Ober die Winkelverstellung, da jedem Impuls eine best immte itmte Winkeiverstellung zugeordnet Ist, und kann mittels eines Korrekturwertspelchers 47 und ggfs. mittels weiterer Informationsssignale In ein Korrektursignal verändert werden, das über einen Verstärker 48 den Ventllen 20, 21 als elektrisches Signal zugeführt werden kann.Fig. 8 shows an alternative circuit, wobel the shaft 6 has a number of pulse generators 38, the signals from the sensor 39 are counted by a counter 46 until the pulse generator 36 of the drive wheel 10 via the sensor 37 generates a signal that the counter 46 stops. The counting result provides information about the angular adjustment, since each pulse is assigned a specific determined angular adjustment, and can be changed into a correction signal by means of a correction value memory 47 and, if necessary, by means of further information signals can be supplied.

Die Schaltung nach Fig. 7 bzw, 8 ist ebenfalls in Verbindung mit der Vorrlchtung nach Fig. 3 arwendbar, wobel die Vorrichtung dann Jedoch keine Einrichtung nach Fig. 6 zur formschlässigen Verbindung des Antrlebsrades 10 und der Welle 6 in den Endlagen der Winkelverstellung benötigt. Das elektrische Signal wird bei Verwendung eines elektromagnet ischen Steller direkt diesem aufgeschaltet oder bei Verwendung eines pneumat ischen Stellers einem eine Leftungsverbindung zwischen dem Steller und einem Reziplenten oder einer Druckquelle steuernden Elektroventll.The circuit according to FIGS. 7 and 8 can also be used in connection with the device according to FIG. 3, but the device then does not require a device according to FIG. 6 for the form-fitting connection of the drive wheel 10 and the shaft 6 in the end positions of the angular adjustment. The electrical signal is applied directly to this when using an electromagnetic actuator or, when using a pneumatic actuator, to an electrovalve controlling a linkage connection between the actuator and a recipient or a pressure source.

Eine Arretterung der gewünschten Winkelverstellung ist durch die In Fig. 3 dargestellte Schieberstellung, bei der kein Ö1 in die oder aus den Zyllndern strömen kann (hydr. Verriegelung), oder durch die formschlüssige Verbindung zwischen Antriebsrad 10 und Welle 6 gegeben.The desired angular adjustment is saved by the slide position shown in FIG. 3, in which no oil can flow into or out of the cylinder (hydraulic locking), or by the positive connection between drive wheel 10 and shaft 6.

Claims (12)

1. Vorrichtung zur Winkelverstellung einer Welle, insbesondere Nockenwelle, gegenüber einem Antriebsrad, wobei die Verstellung durch hydraulische Mittel (Kolben und Zylinder) abhängig davon erfolgt, ob der Vorrichtung Drucköl zugeführt wird oder nicht, dadurch gekennzeichnet, daß die Welle (6) mindestens ein Zylinderpaar (26, 27) zur Verstellung mindestens eines Kolbens (25) in entgegengesetzte Richtungen aufweist,
daß in der Welle (6) ein 3-Punktschieber (29, 44) angeordnet ist, der die Verstellrichtung durch seine Endstellung bestimmt, in denen der jeweils betreffende Zylinder jedes Zylinderpaares (26, 27) mit einer Entlastungsbohrung (18, 19, 61) verbunden ist.
1. Device for angular adjustment of a shaft, in particular camshaft, relative to a drive wheel, the adjustment being carried out by hydraulic means (piston and cylinder) depending on whether the device is supplied with pressure oil or not, characterized in that the shaft (6) has at least one Has a pair of cylinders (26, 27) for adjusting at least one piston (25) in opposite directions,
that a 3- P is arranged unktschieber (29, 44) in the shaft (6) which determines the displacement direction by its end position, in which the cylinders of each pair of cylinders in each case in question (26, 27) having a relief bore (18, 19, 61 ) connected is.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der 3-Punktschieber (29, 44) in seiner Mittelstellung die Verbindungsbohrungen (23, 24) zu den Zylindern (26, 27) absperrt.2. Device according to claim 1, characterized in that the 3-point spool (29, 44) shuts off the connecting bores (23, 24) to the cylinders (26, 27) in its central position. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der 3-Punktschieber (44) von einem Steller (46) elektromagnetisch betätigbar ist.3. Apparatus according to claim 1 or 2, characterized in that the 3- P unktschieber (44) by an actuator (46) can be actuated electromagnetically. 4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der 3-Punktschleber (44) von einem Steller (46) pneumatisch betätigbar Ist.4. Apparatus according to claim 1 or 2, characterized in that the 3-point slider (44) can be actuated pneumatically by an actuator (46). 5. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der 3-Punktschieber (29) abhängig von einer zwischen einer Druckölbohrung (13, 14) und einer Entlastungsbohrung (18, 19) bestehenden Druckdifferenz betätigbar ist.5. Apparatus according to claim 1 or 2, characterized in that the 3-point slide (29) depending on one between a pressure oil bore (13, 14) and a relief bore (18, 19) existing pressure difference can be actuated. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Ent lastungsbohrung (18, 19) aus der Druckölbohrung (13, 14) gebildet Ist, die durch ein jewells vorhandenes elektrisch betätigbares Ventil (20, 21) mit dem Ö1 reservoir verbunden ist.6. The device according to claim 5, characterized in that the Ent load bore (18, 19) from the pressure oil bore (13, 14) is formed, which is connected to the oil reservoir by a respective electrically operated valve (20, 21). 7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß Jeder Zylinder (26, 29) Je einen Kolben (25) aufweist, die unter Belastung an Kugeln (33) anliegen, die sich in bezug auf einen konzentrischen Umfang zur Welle (6) tangential verlaufende Reaktionskräfte verursachende Flächen (34, 35) der Welle (6) und des Antriebsrades (10) abstützen.7. Device according to one of claims 1 to 6, characterized in that each cylinder (26, 29) each have a piston (25) which bear under load on balls (33) which are concentric in relation to the shaft (6) Support surfaces (34, 35) of the shaft (6) and the drive wheel (10) that cause tangential reaction forces. 8. Vorrichtung nech einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß in vorbestimmten Lagen der Winkelverstellung federbelastete Verbindungselemente (69) (Kolben) in Ausnehmungen(70)des Antriebsrades (10) bzw. der Welle (6) einrasten und eine formschlüssige Verbindung zwischen Antriebsrad (10) und Welle (6) herstellen, die bei einem Wechsel der Endstellung des 3-Punktschiebers (29, 44) durch Druckölbeaufschlagung des Verbindungselelementes (69) (Kolben) aufgehoben wird.8. Device nech one of claims 1 to 7, characterized in that in predetermined positions of the angular adjustment spring-loaded connecting elements (69) (pistons) in recesses (70) of the drive wheel (10) or the shaft (6) engage and a positive connection between the drive wheel (10) and shaft (6), which is canceled when the end position of the 3-position spool (29, 44) is changed by pressurizing the connecting element (69) (piston) with oil. 9. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Steller (46) des 3-Punktschiebers (44) -in Verbindung mit bekannten Impeisgebern (36, 38) und Sensoren (37, 39) zur Erkennung der Stellung des Antriebsrades (10) und der Welle (6)- durch Korrektursignale geschaltet wird, die aus dem Verhältnis von durch die Impulsgeber (36, 38) und Sensoren (37, 39) während drehzahlsynchron wiederkehrender, gleichbleibender Zeitspannen festgestellten Referenz- und istwertsignalen sewie gespeicherten Sollwerten gebildet sind.9. The device according to claim 3 or 4, characterized in that the actuator (46) of the 3-point slide (44) -in connection with known feeders (36, 38) and sensors (37, 39) for detecting the position of the drive wheel ( 10) and the shaft (6) - is switched by correction signals which are formed from the ratio of reference and actual value signals as well as stored setpoints ascertained by the pulse generators (36, 38) and sensors (37, 39) during speed-synchronous, constant time periods . 10. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Steller (46) des 3-Punktschiebers (44) -in Verbindung mit bekannten Impulsgebern (36, 38) und Sensoren (37, 39) zur Erkennung der Stellung des Antriebsrades (10)und der Welle (6)- durch Korrektursignale geschaltet wird, die aus einem durch die Impulsgeber (36, 38) und Sensoren (37, 39) festgestellten Bezugssignal und einem ausgezählten, einer bestimmten Winkelverstellung entsprechenden Istwertsignal sowie gespeicherten Sollwerten gebildet sind.10. The device according to claim 3 or 4, characterized in that the actuator (46) of the 3-point slide (44) -in connection with known pulse generators (36, 38) and sensors (37, 39) for detecting the position of the drive wheel (10) and the shaft (6) - are switched by correction signals which consist of a reference signal determined by the pulse generators (36, 38) and sensors (37, 39) and a counted actual value signal corresponding to a specific angle adjustment and stored setpoints are formed. 11. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Ventile (20, 21) -in Verbindung mit bekannten Impulsgebern (36, 38) und Sensoren (37, 39) zur Erkennung der Stellung des Antriebsrades (10) und der Welle (6)- durch Korrektursignale geschaltet werden, die aus dem Verhältnis von durch die Impulsgeber (36, 38) und Sensoren (37, 39) während drehzahlsynchron wiederkehrender, gleichbleibender Zeitspannen festgestellten Referenz- und Istwertsignalen sowie gespeicherten Sollwerten gebildet sind.11. The device according to claim 6, characterized in that the valves (20, 21) -in connection with known pulse generators (36, 38) and sensors (37, 39) for detecting the position of the drive wheel (10) and the shaft (6 ) - are switched by correction signals which are formed from the ratio of reference and actual value signals as well as stored setpoints ascertained by the pulse generators (36, 38) and sensors (37, 39) during speed-synchronous, constant time periods. 12. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Ventile (20, 21) -in Verbindung mit bekannten Impulsgebern (36, 38) und Sensoren (37, 39) zur Erkennung der Stellung des Antriebsrades (10) und der Welle (6)-durch Korrektursignale geschaltet werden, die aus einem durch die Impulsgeber (36, 38) und Sensoren (37, 39) festgestellten Bezugssignal und einem ausgezählten, einer bestimmten Winkelverstellung entsprechenden Istwertsignal sowie gespeicherten Sollwerten gebildet sind.12. The apparatus according to claim 6, characterized in that the valves (20, 21) -in connection with known pulse generators (36, 38) and sensors (37, 39) for detecting the position of the drive wheel (10) and the shaft (6 ) are switched by correction signals which are formed from a reference signal determined by the pulse generators (36, 38) and sensors (37, 39) and a counted actual value signal corresponding to a specific angular adjustment and stored setpoints.
EP85103624A 1984-04-28 1985-03-27 Device for adjusting the angle of a shaft, especially of a camshaft relative to a drive shaft Expired EP0163046B1 (en)

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DE19843415861 DE3415861A1 (en) 1984-04-28 1984-04-28 DEVICE FOR CONTROLLING A COUPLING DEVICE
DE3415861 1984-04-28

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EP0163046B1 EP0163046B1 (en) 1987-11-25

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Cited By (21)

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EP0254058A3 (en) * 1986-07-23 1989-08-09 Suddeutsche Kolbenbolzenfabrik Gmbh Adjusting device for a camshaft for controlling the gas inlet and exhaust valves of an internal-combustion engine
EP0254058A2 (en) * 1986-07-23 1988-01-27 Süddeutsche Kolbenbolzenfabrik GmbH Camshaft for controlling the gas inlet and exhaust valves of an internal-combustion engine
FR2608210A2 (en) * 1986-09-29 1988-06-17 Innolab Rotary timing device with discontinuous rotation using a Maltese cross including means for making the finger of the Maltese cross work
WO1989010469A1 (en) * 1988-04-30 1989-11-02 Ford Motor Company Limited Variable camshaft phasing mechanism
US5056478A (en) * 1988-04-30 1991-10-15 Ford Motor Company Variable camshaft phasing mechanism
US5507254A (en) * 1989-01-13 1996-04-16 Melchior; Jean F. Variable phase coupling for the transmission of alternating torques
US5649506A (en) * 1989-01-13 1997-07-22 Melchior; Jean Frederic Coupling for the transmission of alternating torques
US5645017A (en) * 1989-01-13 1997-07-08 Melchior; Jean Frederic Coupling for the transmission of alternating torques
EP0406527A1 (en) * 1989-07-01 1991-01-09 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Driving system for two oil pumps of an internal combustion engine with reciprocating pistons
US5063895A (en) * 1989-07-01 1991-11-12 Dr. Ing. H.C.F. Porsche Ag Oil pump drive arrangement for a piston internal-combustion engine and method of making same
FR2663981A1 (en) * 1990-06-28 1992-01-03 Atsugi Unisia Corp Device for adjusting the control of the valves of an internal-combustion engine
US5343834A (en) * 1991-05-17 1994-09-06 Robert Bosch Gmbh Device for adjusting the rotational angle relationship between a camshaft and its drive element
DE4218078C1 (en) * 1992-06-01 1994-01-05 Schaeffler Waelzlager Kg Device for automatic, continuous angle adjustment between two shafts connected in the drive
DE4218078C5 (en) * 1992-06-01 2006-07-13 Schaeffler Kg Device for automatic, continuous angle adjustment between two shafts in drive connection
DE4311052C1 (en) * 1992-11-06 1994-09-15 Ford Werke Ag Device for the angular adjustment of a shaft relative to its driving wheel, in particular of a cam shaft relative to its cam shaft wheel
DE4237472C1 (en) * 1992-11-06 1994-03-10 Ford Werke Ag Angular adjustment device between cam shaft and cam shaft wheel - has first row of balls pressed axially and or radially into second row of balls by hydraulically moving piston between contact bearing faces
DE19655398B4 (en) * 1995-06-14 2011-07-28 DENSO CORPORATION, Aichi-pref. Rotary or angular phase control device
DE19655398B8 (en) * 1995-06-14 2012-02-09 Denso Corporation Rotary or angular phase control device
DE19655433B4 (en) * 1995-06-14 2016-06-16 Denso Corporation Rotary or angular phase control device,
DE19723783A1 (en) * 1997-06-06 1998-08-20 Daimler Benz Ag Assembly to adjust the exact relative alignment of a crankshaft and camshaft
WO2000003128A1 (en) 1998-07-10 2000-01-20 Werner Bauss Device for angular adjustment of a shaft in relation to the drive wheel thereof

Also Published As

Publication number Publication date
DE3561080D1 (en) 1988-01-07
US4627825A (en) 1986-12-09
DE3415861A1 (en) 1985-10-31
EP0163046B1 (en) 1987-11-25
DE3415861C2 (en) 1988-08-11
JPS60234122A (en) 1985-11-20

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