DE19514786A1 - Automotive camshaft phase angle modifier - Google Patents

Automotive camshaft phase angle modifier

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Publication number
DE19514786A1
DE19514786A1 DE1995114786 DE19514786A DE19514786A1 DE 19514786 A1 DE19514786 A1 DE 19514786A1 DE 1995114786 DE1995114786 DE 1995114786 DE 19514786 A DE19514786 A DE 19514786A DE 19514786 A1 DE19514786 A1 DE 19514786A1
Authority
DE
Germany
Prior art keywords
camshaft
adjusting
toothing
drive
elements
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
Application number
DE1995114786
Other languages
German (de)
Other versions
DE19514786C2 (en
Inventor
Falk Schulkowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
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Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Priority to DE1995114786 priority Critical patent/DE19514786C2/en
Priority to DE19526888A priority patent/DE19526888A1/en
Publication of DE19514786A1 publication Critical patent/DE19514786A1/en
Application granted granted Critical
Publication of DE19514786C2 publication Critical patent/DE19514786C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F01L1/02—Valve drive
    • F01L1/022—Chain 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
    • F01L1/02—Valve 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
    • F01L1/34413—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 composite camshafts, e.g. with cams being able to move relative to the camshaft
    • 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
    • F01L2001/0471—Assembled camshafts
    • F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
    • 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
    • F01L2001/34486—Location and number of the means for changing the angular relationship
    • F01L2001/34489—Two phasers on one camshaft
    • 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
    • F01L2001/34486—Location and number of the means for changing the angular relationship
    • F01L2001/34493—Dual independent phasing system [DIPS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The first camshaft (26) is driven off the crankshaft (12) and drives the second inlet camshafts (38,40) through gears and sprockets (30,32,34,36). Both cam phase angle adjusters (42,44) are also fitted to camshaft (26), thus forming a radially superposed unit powered by a shared driving element (56). The two adjusters are composed of outer and inner toothed (50,48,62,60) rings (46,58) which differ in toothing angle and cooperate with the complementary ring toothing (52,54,64,66) of the common drive element (56) and output element (68). The two adjusters (46,58) can adjust axially in relation to the drive and output elements. Thus the radially inner adjuster (44) cooperates via outer toothing (54) with the first camshaft (26) as opposed to the outer adjuster (42) which works with the inner toothing of the output gearwheel (30) used to drive the second camshaft (38,40).

Description

Die Erfindung betrifft eine Vorrichtung zum diskreten Verstellen der Phasen­ lage zumindest zweier Nockenwellen relativ zu einer Kurbelwelle einer ven­ tilgesteuerten Hubkolben-Brennkraftmaschine, gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a device for discrete adjustment of the phases location of at least two camshafts relative to a crankshaft of a ven tilcontrolled reciprocating internal combustion engine, according to the preamble of Claim 1.

Zur verbesserten Gaswechselsteuerung von ventilgesteuerten Hubkolben-Brennkraftmaschinen werden unter anderem zunehmend Phasenwandler eingesetzt, die eine Verstellung der Einlaß- und/oder Auslaßnockenwellen relativ zur Kurbelwelle und zueinander ermöglichen.For improved gas exchange control of valve-controlled reciprocating piston internal combustion engines among other things, are increasingly becoming phase shifters used the adjustment of the intake and / or exhaust camshafts enable relative to the crankshaft and to each other.

So zeigt der japanische Patentabstract 61-96112 (A) eine gattungsgemäße Vorrichtung für die diskrete Verstellung zweier Nockenwellen mit zwei Ver­ stelleinheiten, wobei jede Nockenwelle eine Verstelleinheit trägt und beide Nockenwellen direkt über ein auf einer dritten Welle befindliches Zahnrad angetrieben sind. Die Verstellung der einen oder anderen Nockenwelle er­ folgt durch Verschieben der Nockenwellen-Antriebszahnräder relativ zu dem auf der dritten Welle befindlichem, schräg verzahntem Zahnrad.Japanese Patent Abstract 61-96112 (A) shows a generic one Device for the discrete adjustment of two camshafts with two Ver adjusting units, each camshaft carrying one adjusting unit and both Camshafts directly via a gearwheel located on a third shaft are driven. The adjustment of one or the other camshaft he follows by moving the camshaft drive gears relative to that Helical gear on the third shaft.

Aufgabe der Erfindung ist es, die gattungsgemäße Vorrichtung einfacher und baulich günstiger auszubilden.The object of the invention is to simplify the generic device and structurally cheaper to train.

Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind den weiteren Patentansprüchen entnehmbar.This object is achieved with the characterizing features of claim 1 solved. Advantageous embodiments of the invention can be found in the further claims.

Erfindungsgemäß wird vorgeschlagen, die beiden Verstelleinheiten bevor­ zugt als eine einige Baueinheit auf einer der zumindest zwei Nockenwellen anzuordnen und diese Nockenwelle mittel- oder unmittelbar von der Kurbel­ welle anzutreiben, während die zumindest zweite Nockenwelle über die eine Verstelleinheit von der ersten Nockenwelle angetrieben ist. Dies ermöglicht trotz der separaten Verstellung der beiden Nockenwellen eine bauliche Vereinigung der beiden Verstelleinheiten und damit verbunden eine wesent­ liche Vereinfachung des gesamten Nockenwellenantriebs.According to the invention, it is proposed that the two adjustment units be installed moves as one unit on one of the at least two camshafts to arrange and this camshaft directly or indirectly from the crank  drive shaft, while the at least second camshaft over the one Adjustment unit is driven by the first camshaft. this makes possible Despite the separate adjustment of the two camshafts, this is a structural one Unification of the two adjustment units and an essential one simplification of the entire camshaft drive.

In besonders kurz bauender Weise können dabei die beiden Verstelleinhei­ ten im wesentlichen radial übereinander angeordnet sein und mit einem gemeinsamen Antriebselement zusammenwirken.In a particularly short construction, the two adjustment units can th be arranged radially one above the other and with a cooperate common drive element.

Obwohl aus dem Stand der Technik eine Vielzahl anwendbarer Verstellein­ heiten bekannt sind, wird gemäß Anspruch 5 bevorzugt vorgeschlagen, Verstelleinheiten zu verwenden, die aufgrund unterschiedlicher Außen- und Innenverzahnungen bei deren Relativverschiebung eine Verstellung der Nockenwellen ermöglichen. Diese Verstelleinheiten können baulich beson­ ders günstig ineinander verschachtelt und bevorzugt hydraulisch betätigt werden.Although a variety of applicable adjusters are known from the prior art are known, it is preferably proposed according to claim 5, Adjustment units to use, which due to different exterior and Internal gears with their relative displacement an adjustment of Enable camshafts. These adjustment units can be structurally special conveniently nested into each other and preferably operated hydraulically will.

Ein Ausführungsbeispiel der Erfindung ist im folgenden mit weiteren Einzel­ heiten näher erläutert. Die schematische Zeichnung zeigt inAn embodiment of the invention is in the following with further details explained in more detail. The schematic drawing shows in

Fig. 1 in einer Draufsicht den Steuerungsantrieb einer ventilgesteuerten Hubkolben-Brennkraftmaschine mit einer Auslaßnockenwelle und zwei Einlaßnockenwellen; und Figure 1 is a plan view of the control drive of a valve-controlled reciprocating internal combustion engine with an exhaust camshaft and two intake camshafts. and

Fig. 2 einen Längsschnitt durch die auf der Auslaßnockenwelle gemäß Fig. 1 als eine Baueinheit angeordneten Verstelleinheiten für die Auslaß- und Einlaßnockenwellen. FIG. 2 shows a longitudinal section through the adjusting units for the exhaust and intake camshafts arranged as a structural unit on the exhaust camshaft according to FIG. 1.

Gemäß Fig. 1 treibt eine nur angedeutete Kurbelwelle 12 eines Steuerungs­ antriebes 10 einer ventilgesteuerten Hubkolben-Brennkraftmaschnine über ein Kettenrad 14 und eine erste Kette 16 ein auf einer Zwischenwelle 18 befindliches Zahnrad 20 an. Das Zahnrad 20 ist drehfest verbunden mit ei­ nem weiteren Zahnrad 22, daß über eine zweite Kette 24 das auf der Aus­ laßnockenwelle 26 befindliche Antriebszahnrad 28 antreibt. Von dem An­ triebszahnrad 28 geht der Antriebsfluß in noch zu beschreibender Weise zum einen auf die Auslaßnockenwelle 26, zum anderen über ein Abtriebs­ zahnrad 30 und über eine dritte Kette 32 und entsprechende Kettenräder 34, 36 auf die beiden Einlaßnockenwellen 38, 40. Referring to FIG. 1 drives a crankshaft 12 of an only indicated drive controller 10 to a valve-controlled reciprocating piston internal combustion Masch Nine via a sprocket 14 and a first chain 16, a befindliches on an intermediate shaft 18 gear 20. The gear 20 is rotatably connected to egg nem another gear 22 that drives the drive cam 28 located on the lass camshaft 26 from a second chain 24 . From the drive gear 28 to the drive flow in a manner yet to be described, on the one hand on the exhaust camshaft 26 , on the other hand via an output gear 30 and a third chain 32 and corresponding sprockets 34 , 36 on the two inlet camshafts 38 , 40 .

Gemäß Fig. 2 sind auf der Auslaßnockenwelle 26 zu einer Baueinheit mit dem Antriebszahnrad 28 und dem Abtriebszahnrad 30 vereinte Verstellein­ heiten 42, 44 zum Verstellen der Phasenlage jeweils der Auslaßnockenwelle 26 (Verstelleinheit 44) und der beiden Einlaßnockenwellen 38, 40 (Verstelleinheit 42) vorgesehen.According to FIG. 2, on the exhaust camshaft 26 to form a unit with the drive gear 28 and the output gear 30 united Verstellein units 42, 44 for adjusting the phase position of each of the exhaust camshaft 26 (adjustment 44), and the two intake camshafts 38, 40 (adjustment 42) provided .

Die Stelleinheit 44 setzt sich zusammen aus einem ringförmigen Stellele­ ment 46 mit einer geraden (achsparallel verlaufenden) Innenverzahnung 48 und einer schrägen Außenverzahnung 50, welche Verzahnungen mit kom­ plementären Innen- bzw. Außenverzahnungen 52, 54 an einem hülsenförmi­ gen Antriebselement 56 zusammenwirken.The actuating unit 44 is composed of an annular Stellele element 46 with a straight (axially parallel) internal toothing 48 and an oblique external toothing 50 , which toothings cooperate with complementary internal or external toothing 52 , 54 on a sleeve-shaped drive element 56 .

Die Stelleinheit 42 weist ebenfalls ein ringförmiges Stellelement 58 auf, daß mit einer geraden Innenverzahnung 60 und einer schrägen Außenverzah­ nung 62 mit komplementären Innen- bzw. Außenverzahnungen 64, 66 des das Abtriebszahnrad 30 tragenden hülsenförmigen Abtriebselementes 68 bzw. des gemeinsamen Antriebselementes 56 zusammenwirkt.The actuating unit 42 also has an annular actuating element 58 that cooperates with a straight internal toothing 60 and an oblique external toothing 62 with complementary internal and external toothing 64 , 66 of the sleeve-shaped output element 68 carrying the output gear 30 and the common drive element 56 .

Wie aus der Fig. 2 ohne weiteres ersichtlich ist, sind die beiden Stelleinhei­ ten 42, 44 zur Erzielung einer kurzen Bauweise radial übereinander ange­ ordnet.As can be clearly seen from FIG. 2, the two actuating units 42 , 44 are arranged radially one above the other in order to achieve a short construction.

Das Antriebselement 56 ist auf der Auslaßnockenwelle 26 einenends über das Antriebszahnrad 28 und anderenends über einen radial verlaufenden Führungsring 70 drehbar gelagert, wobei der Führungsring 70, das An­ triebselement 56 und das Antriebszahnrad 28 fest und flüssigkeitsdicht mit­ einander verbunden sind.The drive member 56 is mounted on the exhaust camshaft 26 at one end via the drive gear 28 and at the other via a radially extending guide ring 70 rotatably, wherein the guide ring 70, the on drive element 56 and the drive gear 28 is fixedly and fluid-tightly connected to each other.

Mittels einer stirnseitig in die Auslaßnockenwelle 26 eingeschraubten Bund­ schraube 72 ist das Antriebszahnrad 28 zudem axial unverschiebbar und mittels eines Dichtringes 74 flüssigkeitsdicht gehalten.By means of a flange 72 screwed into the end of the exhaust camshaft 26 , the drive gear 28 is also axially immovable and is kept liquid-tight by means of a sealing ring 74 .

Ferner sind das Abtriebselement 68 und das Abtriebszahnrad 30 drehbar, jedoch axial unverschiebbar und flüssigkeitsdicht auf dem gemeinsamen Antriebselement 56 gelagert.Furthermore, the driven element 68 and the driven gear 30 are rotatable, but axially immovable and liquid-tight on the common drive element 56 .

Auf die über die Verzahnungen axial verschiebbaren Verstellelemente 46, 58 wirkt jeweils eine vorgespannte Schraubendruckfeder 76, 78, die die beiden Stellelemente 46, 58 in ihre auf der Zeichnung rechte Endposition vorspannt, wobei diese Position bevorzugt einer Einstellung der Einlaß- und Auslaß­ nockenwellen 38, 40 bzw. 26 bei Leerlaufdrehzahl der Brennkraftmaschine entspricht.In each case acts on the on the gears axially displaceable adjusting elements 46, 58 a prestressed compression coil spring 76, 78, the camshafts, the two actuators 46, 58 biases in their right on the drawing end position, which position preferably an adjustment of the inlet and outlet 38, 40 or 26 corresponds to the idle speed of the internal combustion engine.

Die Verstellung der Stellelemente 46, 58 im Betrieb der Brennkraftmaschine erfolgt hydraulisch, wobei über eine hydraulische Steuervorrichtung (nicht dargestellt) mit einer Hydraulikpumpe die jeweils beiderseits der Stellele­ mente 46, 58 gebildeten Hydraulikkammern 80, 82 bzw. 84, 86 alternierend über nicht dargestellte Kanäle in den Stelleinheiten 42, 44 mit unter Druck stehendem Hydraulikfluid beaufschlagt werden. Die Verstellung kann dabei je nach Auslegung der hydraulischen Steuerung von der gezeichneten rechten Endposition jeweils in die linke Endposition oder auch in beliebige Zwischenpositionen erfolgen.The adjustment of the actuating elements 46 , 58 during operation of the internal combustion engine is carried out hydraulically, with a hydraulic pump (not shown) with a hydraulic pump, the hydraulic chambers 80 , 82 and 84 , 86 formed on both sides of the actuating elements 46 , 58 alternately via channels, not shown in the actuating units 42 , 44 are pressurized with hydraulic fluid under pressure. Depending on the design of the hydraulic control, the adjustment can take place from the drawn right end position to the left end position or to any intermediate position.

Soll die Auslaßnockenwelle 26 verstellt werden, so erfolgt dies durch ent­ sprechendes Betätigen/Druckbeaufschlagung des Stellelementes 46, bei dessen Verschiebung nach links die Auslaßnockenwelle 26 relativ zum An­ triebszahnrad 28 verdreht wird. Die Einlaßnockenwellen 38, 40 bleiben da­ von unberührt.If the exhaust camshaft 26 are adjusted, this is done by accordingly pressing / pressurizing the actuating element 46 , the displacement of which to the left, the exhaust camshaft 26 is rotated relative to the drive gear 28 . The intake camshafts 38 , 40 remain unaffected.

Zur Verstellung der beiden Einlaßnockenwellen 38, 40 wird das Stellelement 58 ebenfalls durch entsprechende Druckbeaufschlagung nach links ver­ schoben, wobei nunmehr unabhängig von der Auslaßnockenwelle 26 das Abtriebszahnrad 30 relativ zum Antriebselement 56 bzw. zum Antriebszahn­ rad 28 verdreht wird.To adjust the two inlet camshafts 38 , 40 , the actuating element 58 is also pushed to the left by appropriate pressurization, the output gear 30 now being rotated independently of the exhaust camshaft 26 relative to the drive element 56 or the drive toothed wheel 28 .

Selbstverständlich können auch alle drei Nockenwellen durch gleichzeitige Verstellung beider Stellelemente 46, 58 beliebig relativ zur Kurbelwelle 12 verdreht bzw. in ihrer Phasenlage verändert werden.Of course, all three camshafts can also be rotated relative to the crankshaft 12 or their phase position changed by simultaneous adjustment of both adjusting elements 46 , 58 .

Claims (10)

1. Vorrichtung zum diskreten Verstellen der Phasenlage zumindest zweier Nockenwellen relativ zu einer Kurbelwelle einer ventilgesteuerten Hub­ kolben-Brennkraftmaschine, wobei jeder Nockenwelle eine Versiellein­ heit zugeordnet ist, dadurch gekennzeichnet, daß
  • a) die erste Nockenwelle (26) von der Kurbelwelle (12) angetrieben ist
  • b) die erste Nockenwelle (26) über Getriebemittel (30, 32, 34, 36) die zumindest zweite Nockenwelle (38, 40) antreibt; und
  • c) die beiden Verstelleinheiten (42, 44) auf der ersten Nockenwelle (26) angeordnet sind.
1. A device for discrete adjustment of the phase position of at least two camshafts relative to a crankshaft of a valve-controlled stroke piston internal combustion engine, wherein each camshaft is assigned a Versiellein unit, characterized in that
  • a) the first camshaft ( 26 ) is driven by the crankshaft ( 12 )
  • b) the first camshaft ( 26 ) drives the at least second camshaft ( 38 , 40 ) via gear means ( 30 , 32 , 34 , 36 ); and
  • c) the two adjusting units ( 42 , 44 ) are arranged on the first camshaft ( 26 ).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Verstelleinheiten (42, 44) eine Baueinheit bilden.2. Device according to claim 1, characterized in that the two adjusting units ( 42 , 44 ) form a structural unit. 3. Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die beiden Verstelleinheiten (42, 44) im wesentlichen radial übereinander angeordnet sind.3. Device according to claims 1 and 2, characterized in that the two adjusting units ( 42 , 44 ) are arranged substantially radially one above the other. 4. Vorrichtung nach den Ansprüchen 1-3, dadurch gekennzeichnet, daß die beiden Verstelleinheiten (42, 44) mit einem gemeinsamen Antriebs­ element (56) zusammenwirken.4. Device according to claims 1-3, characterized in that the two adjusting units ( 42 , 44 ) cooperate with a common drive element ( 56 ). 5. Vorrichtung nach einem oder mehreren der Ansprüche 1-4, dadurch ge­ kennzeichnet, daß die beiden Verstelleinheiten (42, 44) ringförmige Stell­ elemente (46, 58) aufweisen, die mit einer Außen- und einer Innenver­ zahnung (50, 48 bzw. 62, 60) mit unterschiedlichen Verzahnungswinkeln versehen sind und die mit komplementären Innen- und Außenverzah­ nungen (52, 54 bzw. 64, 66) des gemeinsamen Antriebselementes (56) und des Abtriebselementes (68) zusammenwirken, wobei die Stellele­ mente (46, 58) axial relativ zu den An- und Abtriebselementen verschieb­ bar sind.5. The device according to one or more of claims 1-4, characterized in that the two adjusting units ( 42 , 44 ) have annular adjusting elements ( 46 , 58 ) which with an external and an internal toothing ( 50 , 48 or . 62 , 60 ) are provided with different toothing angles and which cooperate with complementary internal and external toothing ( 52 , 54 and 64 , 66 ) of the common drive element ( 56 ) and the output element ( 68 ), the adjusting elements ( 46 , 58 ) are axially displaceable relative to the input and output elements. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das radial innen liegende Stellelement (44) mit einer Außenverzahnung (54) auf der ersten Nockenwelle (26) zusammenwirkt.6. The device according to claim 5, characterized in that the radially inner adjusting element ( 44 ) cooperates with an external toothing ( 54 ) on the first camshaft ( 26 ). 7. Vorrichtung nach den Ansprüchen 5 und 6, dadurch gekennzeichnet, daß das radial außen liegende Stellelement (42) mit einer Innenverzahnung (66) eines die zumindest zweite Nockenwelle (38, 40) antreibenden Ab­ triebszahnrades (30) zusammenwirkt.7. Device according to claims 5 and 6, characterized in that the radially outer adjusting element ( 42 ) cooperates with an internal toothing ( 66 ) of the at least the second camshaft ( 38 , 40 ) driving drive gear ( 30 ). 8. Vorrichtung nach den Ansprüchen 5-7, dadurch gekennzeichnet, daß das Antriebszahnrad (28) der ersten Nockenwelle (26) drehfest mit dem hülsenförmigen Antriebselement (56) verbunden ist und daß das An­ triebselement (56) einenends über das Antriebszahnrad (28) und ande­ renends über einen Führungsring (70) verdrehbar auf der ersten Noc­ kenwelle (26) gelagert ist.8. Device according to claims 5-7, characterized in that the drive gear (28) of the first camshaft (26) rotatably connected to the sleeve-shaped drive element (56), and in that the on drive element (56) at one end via the drive gear (28) and other renend via a guide ring ( 70 ) is rotatably mounted on the first cam shaft ( 26 ). 9. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die ringförmigen Stellelemente (46, 58) hy­ draulisch verstellbar sind.9. The device according to one or more of the preceding claims, characterized in that the annular adjusting elements ( 46 , 58 ) are hy draulically adjustable. 10. Vorrichtung nach einem oder mehreren der Ansprüche 1-9, dadurch gekennzeichnet, daß die Stellelemente (46, 48) mittels Federn (76, 78) in eine Endposition vorgespannt sind.10. The device according to one or more of claims 1-9, characterized in that the adjusting elements ( 46 , 48 ) by means of springs ( 76 , 78 ) are biased into an end position.
DE1995114786 1995-04-21 1995-04-21 Device for discrete adjustment of the phase position of at least two camshafts Expired - Fee Related DE19514786C2 (en)

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DE1995114786 DE19514786C2 (en) 1995-04-21 1995-04-21 Device for discrete adjustment of the phase position of at least two camshafts
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DE19722133A1 (en) * 1997-05-27 1998-12-03 Bayerische Motoren Werke Ag Manufacture of a rotation angle adjustment unit formed from an impeller and a cellular wheel, in particular for camshafts of internal combustion engines
DE19807315A1 (en) * 1998-02-20 1999-08-26 Bayerische Motoren Werke Ag Cam shaft drive with internally toothed axle can be additionally used for adjustment of rotation angle
DE19816254A1 (en) * 1998-04-11 1999-10-14 Schaeffler Waelzlager Ohg Valve timing adjustment system for an internal combustion engine
DE102005023162B4 (en) 2004-09-20 2021-12-09 Joh. Winklhofer & Söhne GmbH und Co. KG Timing chain drive with additional gear

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GB2415465A (en) * 2004-06-21 2005-12-28 Mechadyne Plc Engine with variable valve timing using single cam phaser camshafts
DE102005031241A1 (en) * 2005-07-01 2007-01-04 Fev Motorentechnik Gmbh Variable valve train of a piston internal combustion engine
DE102005039751A1 (en) * 2005-08-23 2007-03-01 Mahle International Gmbh camshaft
DE102005061187A1 (en) * 2005-12-21 2007-06-28 Mahle International Gmbh camshaft
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DE102007007758A1 (en) * 2007-02-16 2008-08-21 Mahle International Gmbh Valve drive of a reciprocating internal combustion engine
EP2479388B1 (en) * 2009-09-14 2014-07-09 Honda Motor Co., Ltd. Variable valve operating device for internal combustion engine
DE102011106394A1 (en) * 2011-07-02 2013-01-03 Volkswagen Aktiengesellschaft Internal combustion engine
CN104246153B (en) * 2012-05-18 2016-11-09 舍弗勒技术股份两合公司 Camshaft unit
DE102012220543A1 (en) * 2012-11-12 2014-05-15 Schaeffler Technologies Gmbh & Co. Kg Camshaft adjustment device
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DE102014104994A1 (en) * 2014-04-08 2015-10-08 Thyssenkrupp Presta Teccenter Ag adjustable camshaft
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Publication number Priority date Publication date Assignee Title
DE19722133A1 (en) * 1997-05-27 1998-12-03 Bayerische Motoren Werke Ag Manufacture of a rotation angle adjustment unit formed from an impeller and a cellular wheel, in particular for camshafts of internal combustion engines
DE19807315A1 (en) * 1998-02-20 1999-08-26 Bayerische Motoren Werke Ag Cam shaft drive with internally toothed axle can be additionally used for adjustment of rotation angle
DE19816254A1 (en) * 1998-04-11 1999-10-14 Schaeffler Waelzlager Ohg Valve timing adjustment system for an internal combustion engine
DE102005023162B4 (en) 2004-09-20 2021-12-09 Joh. Winklhofer & Söhne GmbH und Co. KG Timing chain drive with additional gear

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DE19526888A1 (en) 1997-01-23

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