DE102004022832A1 - Valve operating mechanism for internal combustion engine of motor vehicle, has cam tracks actuating valves via sliding unit which includes sliding pivot and operating units, where tracks have with different cam profiles and lifting curves - Google Patents

Valve operating mechanism for internal combustion engine of motor vehicle, has cam tracks actuating valves via sliding unit which includes sliding pivot and operating units, where tracks have with different cam profiles and lifting curves Download PDF

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Publication number
DE102004022832A1
DE102004022832A1 DE102004022832A DE102004022832A DE102004022832A1 DE 102004022832 A1 DE102004022832 A1 DE 102004022832A1 DE 102004022832 A DE102004022832 A DE 102004022832A DE 102004022832 A DE102004022832 A DE 102004022832A DE 102004022832 A1 DE102004022832 A1 DE 102004022832A1
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Prior art keywords
tracks
cam
sliding
valve gear
gear according
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DE102004022832A
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DE102004022832B4 (en
Inventor
Willi Schultz
Dietmar Schwarzenthal
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • 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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/245—Hydraulic tappets
    • F01L1/25—Hydraulic tappets between cam and valve stem
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve

Abstract

The mechanism has a cam shaft with a sliding cam device which includes cam tracks that are lying parallel to each other and acting on valves, where the tracks have different cam profiles and lifting curves. The curves cooperate with actuating units comprising control spikes to adjust the device. The tracks actuate the valves via a sliding unit (23), where the unit includes a sliding pivot and operating units for operating the valves.

Description

Die Erfindung betrifft einen Ventiltrieb für eine Brennkraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The The invention relates to a valve train for an internal combustion engine according to the preamble of claim 1.

Es ist ein Ventiltrieb für eine Brennkraftmaschine bekannt, EP 0 798 451 B1 , der eine Nockenwelle mit einer Schiebenockeneinrichtung umfasst. Die hülsenartig auf der Nockenwelle angeordnete Schiebenockeneinrichtung ist mit beabstandeten Hubkurven und nebeneinander liegenden Nockenbahnen mit unterschiedlichen Nockenformen versehen. Die Hubkurven arbeiten zur Verstellung der Schiebenockeneinrichtung mit Steuerstifte aufweisenden Betätigungselementen zusammen. Dieser Ventiltrieb bietet bedeutende Potentiale, um mit vergleichsweise einfachen Mitteln eine hochwirksame variable Ventilsteuerung für eine Brennkraftmaschine zu realisieren, und zwar mit dem Ziel letztere bezüglich Leistung und Verbrauch zu optimieren.It is known a valve train for an internal combustion engine, EP 0 798 451 B1 comprising a camshaft with a sliding cam device. The sleeve-like arranged on the camshaft sliding cam device is provided with spaced cam lifts and adjacent cam tracks with different cam shapes. The lifting curves work together to adjust the sliding cam device with control pins having actuators. This valvetrain offers significant potential to realize with relatively simple means a highly effective variable valve timing for an internal combustion engine, with the aim of optimizing the latter in terms of performance and consumption.

Eine vergleichbare Schiebenockeneinrichtung geht aus der nicht veröffentlichten DE 103 32 927 hervor, die Hubkurven mit unterschiedlichen Hubkurvensektionen aufweist. Letztere sichern einen ruckfreien Verlauf der Verstellung der Schiebenockeneinrichtung zur Schaltung der verschiedenen Nockenbahnen.A comparable sliding cam device is from the unpublished DE 103 32 927 which has lift curves with different lift curve sections. The latter ensure a smooth course of adjustment of the sliding cam device for switching the various cam tracks.

Aufgabe der Erfindung ist es, eine Schiebnockeneinrichtung für einen Ventiltrieb einer Brennkraftmaschine zu schaffen, welche Schiebenockeneinrichtung bei räumlich günstiger Anordnung auf der Nockenwelle über ihre Hubkurven funktionsgerecht mit den Ventilen zusammenarbeitet.task The invention is a sliding cam device for a Valve gear of an internal combustion engine to create which sliding cam device at spatial better Arrangement on the camshaft over their stroke curves functionally cooperates with the valves.

Nach der Erfindung wird diese Aufgabe durch die Merkmale des Patentanspruchs gelöst. Weitere, die Erfindung ausgestaltende Merkmale sind in den Unteransprüchen enthalten.To The invention achieves this object by the features of the patent claim solved. Further, the invention ausgestaltende features are included in the subclaims.

Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, dass das im Aufbau einfache Gleitelement, das zwischen den Nockenbahnen und den Ventilen wirksam ist, zu einer vorbildlichen Übertragung der Rotationsbewegungen in Hubbewegungen beiträgt. Das Gleitelement, umfassend einen Gleitzapfen und Betätigungselemente, ist nicht nur konstruktiv, sondern auch produktionstechnisch leicht umsetzbar. Die Funktion dieses Ventiltriebs wird noch dadurch unterstützt, dass zwischen dem Gleitelement und den Ventilen Stößel vorgesehen sind. Schließlich schafft die Anordnung der Lager für die Nockenwelle d.h. beiderseits der Schiebenockeneinrichtung günstige räumliche Verhältnisse.The with the invention mainly The advantages achieved are the fact that the structure is simple Sliding element, which is effective between the cam tracks and the valves, to a model transfer the rotational movements in lifting movements contributes. The sliding member comprising a Guide pegs and actuators, is not only constructive but also easy to produce implemented. The function of this valve train is further supported by the fact that between the sliding member and the valves ram are provided. Finally creates the arrangement of the bearings for the Camshaft i. on both sides of the sliding cam device favorable spatial Conditions.

In der Zeichnung wird ein Ausführungsbeispiel der Erfindung gezeigt, das nachstehend näher beschrieben wird.In The drawing is an embodiment of the invention, which will be described in more detail below.

Es zeigenIt demonstrate

1 einen Längsschnitt durch einen Zylinderkopf einer Brennkraftmaschine mit dem Ventiltrieb nach der Erfindung, 1 a longitudinal section through a cylinder head of an internal combustion engine with the valve train according to the invention,

2 eine Ansicht von oben auf ein Gleitelement nach der Erfindung. 2 a view from above of a sliding element according to the invention.

Von einer Brennkraftmaschine 1, die zum Antrieb eines Kraftfahrzeugs dient, ist lediglich ein Ventiltrieb 2 dargestellt. Der Ventiltrieb 2 umfasst eine Nockenwelle 3 und eine büchsenartige Schiebenockeneinrichtung 4, die axial beweglich – in Richtung A-A – zwischen Endlagen ELI und ELII auf der Nockenwelle 3 gelagert ist. Die Schiebenockeneinrichtung 4 ist unter Zwischenschaltung einer formschlüssigen Nabenverbindung – Vielnutenprofil, Kerbzahnprofil oder dgl. – drehfest mit der Nockenwelle 3 verbunden und besitzt drei Nockenbahnen 5, 6 und 7 mit unterschiedlichen Nockenformen NI, NII und NII, welche Nockenbahnen 5, 6 und 7 nebeneinander liegen und zu einem Nockenblock 8 zusammengefasst sind. Der Nockenblock 8 erstreckt sich zwischen Ringabschnitte 9 und 10, in die Hubkurven 11 und 12 eingearbeitet sind. Benachbart der Endlagen ELI und ELII ist die Nockenwelle 3 in Lagern LI und LII angeordnet, die Bestandteil eines nicht gezeigten Zylinderkopfs der Brennkraftmaschine 1 sind.From an internal combustion engine 1 , which serves to drive a motor vehicle, is only a valve train 2 shown. The valve train 2 includes a camshaft 3 and a can-like sliding cam device 4 axially movable - in direction AA - between end positions ELI and ELII on the camshaft 3 is stored. The sliding cam device 4 is with the interposition of a positive hub connection - Vielnutenprofil, serrated profile or the like. - Rotationally fixed to the camshaft 3 connected and has three cam tracks 5 . 6 and 7 with different cam shapes NI, NII and NII, which cam tracks 5 . 6 and 7 lie next to each other and to a cam block 8th are summarized. The cam block 8th extends between ring sections 9 and 10 , in the lift curves 11 and 12 are incorporated. Adjacent to the end positions ELI and ELII is the camshaft 3 arranged in bearings LI and LII, which is part of a not shown cylinder head of the internal combustion engine 1 are.

Um die Schiebenockeneinrichtung 4 auf der Nockenwelle 3 zu bewegen, greifen jeweils Zapfen 13, 14 und 15 und 16 von Steuerstiften 17, 18 und 19, 20 in Nute 21 und 22 der Hubkurven 11 und 12 ein. Die Steuerstifte 17, 18 und 19, 20 verlaufen in radialer Richtung zur Schiebenockeneinrichtung 4 und werden mittels hydraulischer oder elektromechanischer Einrichtungen betätigt.To the sliding cam device 4 on the camshaft 3 to move, each pin grab 13 . 14 and 15 and 16 from taxpayers 17 . 18 and 19 . 20 in groove 21 and 22 the lifting curves 11 and 12 one. The control pins 17 . 18 and 19 . 20 extend in the radial direction to the sliding cam device 4 and are operated by hydraulic or electromechanical means.

Die Nockenbahnen 5, 6 und 7 betätigen über ein Gleitelement 23 Ventile 24 und 25 des Ventiltriebs 2, die z.B. als zwei Einlassventile in einem Zylinder der Brennkraftmaschine 1 wirksam sind, wobei die Steuerzeiten der Ventile 24 und 25 dank der Nockenbahnen 5, 6 und 7 der Schiebenockeneinrichtung 4 veränderbar sind – Variabler Ventiltrieb –. Das Gleitelement 23 weist einen von den Nockenbahnen 5, 6 und 7 beeinflussbaren Gleitzapfen 26 und Betätigungselemente 27 und 28 für die Ventile 24 und 25 auf. Der Gleitzapfen 26 und die Betätigungselemente 27 und 28 sind aus einem Stück hergestellt und verkörpern ein T-förmiges Gebilde. Dabei sind die Betätigungselemente 27 und 28 nach Art von in Längsrichtung der Nockenwelle 3 verlaufenden Armen 29 und 30 ausgebildet, deren freie Enden 31 und 32 zu den Ventilen 24 und 25 hin gerichtet sind und eine kreisförmige Kontaktebene 33 und 34 aufweisen.The cam tracks 5 . 6 and 7 operate via a sliding element 23 valves 24 and 25 of the valve train 2 , for example, as two intake valves in a cylinder of the internal combustion engine 1 are effective, with the timing of the valves 24 and 25 thanks to the cam tracks 5 . 6 and 7 the sliding cam device 4 can be changed - Variable valve train -. The sliding element 23 has one of the cam tracks 5 . 6 and 7 influenceable pegs 26 and actuators 27 and 28 for the valves 24 and 25 on. The guide peg 26 and the actuators 27 and 28 are made in one piece and embody a T-shaped structure. Here are the actuators 27 and 28 in the manner of in the longitudinal direction of the camshaft 3 running arms 29 and 30 formed, whose free ends 31 and 32 to the valves 24 and 25 directed and a circular contact plane 33 and 34 exhibit.

Schließlich sind zwischen den Kontaktebenen 33 und 34 und Schaftenden 35 und 36 der Ventile 24 und 25 Stößel 37 und 38 bspw. mit hydraulischem Spielausgleich vorgesehen. Die Stößel 37 und 38 sind auf den den Armen 29 und 30 bzw. den Betätigungselementen 27 und 28 zugekehrten Seiten mit ebenfalls kreisförmigen Stützebenen 39 und 40 aufweisenden Ausformungen 41 und 42 versehen. Die Kontaktebenen 33 und 34 der Arme 29 und 30 stehen mit den Stützebenen 39 und 40 in Wirkverbindung.Finally, between the contact levels 33 and 34 and shank ends 35 and 36 the valves 24 and 25 tappet 37 and 38 For example, provided with hydraulic clearance compensation. The pestles 37 and 38 are on the poor 29 and 30 or the actuators 27 and 28 facing sides with also circular support levels 39 and 40 having formations 41 and 42 Mistake. The contact levels 33 and 34 the poor 29 and 30 stand with the support levels 39 and 40 in active connection.

Claims (8)

Ventiltrieb für eine Brennkraftmaschine, umfassend eine Nockenwelle mit einer Schiebenockeneinrichtung, die nebeneinander liegende auf Ventile einwirkende Nockenbahnen mit unterschiedlichen Nockenformen und Hubkurven besitzt, welche Hubkurven mit Steuerstifte aufweisenden Betätigungselementen zur Verstellung der Schiebenockeneinrichtung zusammenarbeiten, dadurch gekennzeichnet, dass die Nockenbahnen (5, 6 und 7) der auf der Nockenwelle (3) gelagerten Schiebenockeneinrichtung (4) über ein Gleitelement (23) die Ventile (24 und 25) betätigt.Valve gear for an internal combustion engine, comprising a camshaft with a sliding cam device, which has adjacent valve-engaging cam tracks with different cam shapes and lift curves which cooperate with cam follower actuators for adjusting the shift cam device, characterized in that the cam tracks ( 5 . 6 and 7 ) on the camshaft ( 3 ) mounted sliding cam device ( 4 ) via a sliding element ( 23 ) the valves ( 24 and 25 ). Ventiltrieb nach Anspruch 1, dadurch gekennzeichnet, dass das Gleitelement (23) einen von die Nockenbahnen (5, 6 und 7) beeinflussbaren Gleitzapfen (26) und Betätigungselemente (27 und 28) für die Ventile (24 und 25) aufweist.Valve gear according to claim 1, characterized in that the sliding element ( 23 ) one of the cam tracks ( 5 . 6 and 7 ) influenceable pegs ( 26 ) and actuators ( 27 and 28 ) for the valves ( 24 and 25 ) having. Ventiltrieb nach Anspruch 2, dadurch gekennzeichnet, dass der Gleitzapfen (26) und die Betätigungselemente (27 und 28) aus einem Stück hergestellt sind.Valve gear according to claim 2, characterized in that the sliding peg ( 26 ) and the actuators ( 27 and 28 ) are made in one piece. Ventiltrieb nach Anspruch 3, dadurch gekennzeichnet, dass der Gleitzapfen (26) und die Betätigungselemente (27 und 28) ein etwa T-förmiges Gebilde verkörpern.Valve gear according to claim 3, characterized in that the sliding peg ( 26 ) and the actuators ( 27 and 28 ) embody an approximately T-shaped structure. Ventiltrieb nach den Ansprüchen 2 und 3, dadurch gekennzeichnet, dass freie Enden (31 und 32) der nach Art von Armen (29 und 30) ausgebildeten Betätigungselemente (27 und 28) kreisförmige Kontaktebenen (33 und 34) aufweisen.Valve gear according to claims 2 and 3, characterized in that free ends ( 31 and 32 ) of the type of poor ( 29 and 30 ) formed actuating elements ( 27 and 28 ) circular contact planes ( 33 and 34 ) exhibit. Ventiltrieb nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass zwischen den Kontaktebenen (33 und 34) der Betätigungselemente (27 und 28) und den Ventilen (24 und 25) Stößel (37 und 38) vorgesehen sind.Valve gear according to one or more of the preceding claims, characterized in that between the contact planes ( 33 and 34 ) of the actuating elements ( 27 and 28 ) and the valves ( 24 and 25 ) Ram ( 37 and 38 ) are provided. Ventiltrieb nach Anspruch 6, dadurch gekennzeichnet, dass die Stößel (37 und 38) auf der den Kontaktebenen (33 und 34) der Betätigungselemente (27 und 28) zugekehrten Seite mit Stützebenen (39 und 40) aufweisenden Ausformungen (41 und 42) versehen sind.Valve gear according to claim 6, characterized in that the plunger ( 37 and 38 ) on the contact planes ( 33 and 34 ) of the actuating elements ( 27 and 28 ) facing side with support levels ( 39 and 40 ) having formations ( 41 and 42 ) are provided. Ventiltrieb nach Anspruch 1, dadurch gekennzeichnet, dass die Nockenwelle (3) von Lagern (LI und LII) aufgenommen wird, die benachbart von Endlagen (ELI und ELII) der Schiebenockeneinrichtung (4) verlaufen.Valve gear according to claim 1, characterized in that the camshaft ( 3 ) of bearings (LI and LII) adjacent to end positions (ELI and ELII) of the sliding cam device (FIG. 4 ).
DE102004022832.9A 2004-05-08 2004-05-08 Valve train for an internal combustion engine Active DE102004022832B4 (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007104287A2 (en) * 2006-03-15 2007-09-20 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Variable valve drive for an internal combustion engine
WO2009056427A1 (en) * 2007-10-30 2009-05-07 Schaeffler Kg Valve train of an internal combustion engine
DE102009015486A1 (en) 2009-03-28 2010-09-30 Schaeffler Technologies Gmbh & Co. Kg Electromagnetic actuator comprises housing with electrically energized magnetic coil device, and magnetic coil device generates magnetic field, where stationary core area is commonly assigned to permanent magnets
DE102010013216A1 (en) 2009-04-04 2010-10-07 Schaeffler Technologies Gmbh & Co. Kg Valve gear of an internal combustion engine
US20110079188A1 (en) * 2008-06-20 2011-04-07 Jens Meintschel Valve drive train device
US20110079191A1 (en) * 2008-06-20 2011-04-07 Markus Lengfeld Valve drive train device
WO2013000589A1 (en) * 2011-06-30 2013-01-03 Schaeffler Technologies AG & Co. KG Mounting a camshaft by means of rolling bearings
US8695549B2 (en) 2011-05-13 2014-04-15 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Valve train for internal combustion engines for actuating gas exchange valves
DE102015216384A1 (en) 2015-08-27 2017-03-02 Schaeffler Technologies AG & Co. KG Valve train construction group for an internal combustion engine
DE102016206065A1 (en) 2016-04-12 2017-10-12 Schaeffler Technologies AG & Co. KG Valve train construction group for an internal combustion engine
DE102019114046A1 (en) * 2019-05-27 2020-12-03 Bayerische Motoren Werke Aktiengesellschaft Valve drive for an internal combustion engine of a motor vehicle, internal combustion engine, motor vehicle and use of a valve drive

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230809C2 (en) * 1992-09-02 1995-03-09 Steckhan Helmut Prof Dr Valve control for internal combustion engines
DE19611641C1 (en) * 1996-03-25 1997-06-05 Porsche Ag Valve operating cam drive for combustion engines
EP0867601B1 (en) * 1997-03-27 2003-01-22 Toyota Jidosha Kabushiki Kaisha Valve driving apparatus for engine
DE10148177B4 (en) * 2001-09-28 2015-05-13 Schaeffler Technologies AG & Co. KG Valve train with valve lift switching for the gas exchange valves of a 4-stroke internal combustion engine

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007104287A3 (en) * 2006-03-15 2007-11-01 Iav Gmbh Variable valve drive for an internal combustion engine
WO2007104287A2 (en) * 2006-03-15 2007-09-20 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Variable valve drive for an internal combustion engine
WO2009056427A1 (en) * 2007-10-30 2009-05-07 Schaeffler Kg Valve train of an internal combustion engine
US8474424B2 (en) * 2008-06-20 2013-07-02 Daimler Ag Valve drive train device
US8893674B2 (en) * 2008-06-20 2014-11-25 Daimler Ag Valve drive train device
US20110079188A1 (en) * 2008-06-20 2011-04-07 Jens Meintschel Valve drive train device
US20110079191A1 (en) * 2008-06-20 2011-04-07 Markus Lengfeld Valve drive train device
DE102009015486A1 (en) 2009-03-28 2010-09-30 Schaeffler Technologies Gmbh & Co. Kg Electromagnetic actuator comprises housing with electrically energized magnetic coil device, and magnetic coil device generates magnetic field, where stationary core area is commonly assigned to permanent magnets
DE102010013216A1 (en) 2009-04-04 2010-10-07 Schaeffler Technologies Gmbh & Co. Kg Valve gear of an internal combustion engine
DE102010013216B4 (en) 2009-04-04 2022-04-28 Schaeffler Technologies AG & Co. KG Valve train of an internal combustion engine
US8695549B2 (en) 2011-05-13 2014-04-15 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Valve train for internal combustion engines for actuating gas exchange valves
WO2013000589A1 (en) * 2011-06-30 2013-01-03 Schaeffler Technologies AG & Co. KG Mounting a camshaft by means of rolling bearings
DE102015216384A1 (en) 2015-08-27 2017-03-02 Schaeffler Technologies AG & Co. KG Valve train construction group for an internal combustion engine
DE102016206065A1 (en) 2016-04-12 2017-10-12 Schaeffler Technologies AG & Co. KG Valve train construction group for an internal combustion engine
DE102019114046A1 (en) * 2019-05-27 2020-12-03 Bayerische Motoren Werke Aktiengesellschaft Valve drive for an internal combustion engine of a motor vehicle, internal combustion engine, motor vehicle and use of a valve drive

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