DE102015012044A1 - Valve train device, in particular for an internal combustion engine - Google Patents
Valve train device, in particular for an internal combustion engine Download PDFInfo
- Publication number
- DE102015012044A1 DE102015012044A1 DE102015012044.1A DE102015012044A DE102015012044A1 DE 102015012044 A1 DE102015012044 A1 DE 102015012044A1 DE 102015012044 A DE102015012044 A DE 102015012044A DE 102015012044 A1 DE102015012044 A1 DE 102015012044A1
- Authority
- DE
- Germany
- Prior art keywords
- cam
- camshaft
- contour
- switching element
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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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
-
- 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
- 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
-
- 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
- F01L2013/10—Auxiliary actuators for variable valve timing
-
- 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
- F01L2013/10—Auxiliary actuators for variable valve timing
- F01L2013/103—Electric motors
Abstract
Die Erfindung betrifft eine Ventiltriebvorrichtung (10), insbesondere für eine Brennkraftmaschine, mit zumindest einer Nockenwelle (11), die zumindest ein axial verschiebbares Nockenelement (13) aufweist, das zumindest einen mehrspurigen Nocken (14, 18) und zumindest eine Angriffskontur (22) aufweist, und mit einem gehäusefest angeordneten Schaltaktor (23) zur axialen Verschiebung des zumindest einen Nockenelements (13), der ein axial verschiebbares Schaltelement (26) umfasst, das mit der Angriffskontur (22) in Wirkverbindung steht, sowie einen Kraftfahrzeugantriebsstrang mit einer erfindungsgemäßen Ventiltriebvorrichtung (10).The invention relates to a valve drive device (10), in particular for an internal combustion engine, having at least one camshaft (11) which has at least one axially displaceable cam element (13) which has at least one multi-track cam (14, 18) and at least one engagement contour (22). and a housing-fixed switching actuator (23) for axial displacement of the at least one cam element (13) comprising an axially displaceable switching element (26), which is in operative connection with the attack contour (22), and a motor vehicle drive train with a valve drive device according to the invention (10).
Description
Die Erfindung betrifft eine Ventiltriebvorrichtung, insbesondere für eine Brennkraftmaschine, und einen Kraftfahrzeugantriebsstrang mit einer Ventiltriebvorrichtung, insbesondere für eine Brennkraftmaschine.The invention relates to a valve drive device, in particular for an internal combustion engine, and a motor vehicle drive train with a valve drive device, in particular for an internal combustion engine.
Aus der
Der Erfindung liegt insbesondere die Aufgabe zugrunde, eine Ventiltriebvorrichtung mit einem geringen Bauraumbedarf bereitzustellen. Sie wird durch eine erfindungsgemäße Ausgestaltung entsprechend dem Anspruch 1 gelöst. Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.The invention is in particular the object of providing a valve drive device with a small space requirement. It is achieved by an embodiment according to the invention according to claim 1. Further developments of the invention will become apparent from the dependent claims.
Es wird eine Ventiltriebvorrichtung, insbesondere für eine Brennkraftmaschine, mit zumindest einer Nockenwelle, die zumindest ein axial verschiebbares Nockenelement aufweist, das zumindest einen mehrspurigen Nocken und zumindest eine Angriffskontur aufweist, und mit einem gehäusefest angeordneten Schaltaktor zur axialen Verschiebung des zumindest einen Nockenelements, der ein axial verschiebbares Schaltelement umfasst, das mit der Angriffskontur in Wirkverbindung steht, vorgeschlagen. Dadurch kann eine Angriffskontur mit einer geringen Axialausdehnung erreicht werden. Somit kann ein Bauraumbedarf des Nockenelements in Axialrichtung verringert werden und ein vorhandener Bauraum besser ausgenutzt werden. Insbesondere kann ein axialer Bauraum für zusätzliche Nockenspuren des Nockenelements gewonnen werden. Unter einem „mehrspurigen Nocken” soll in diesem Zusammenhang ein Nocken mit zumindest zwei Teilnocken, die jeweils unterschiedliche Nockenspuren ausbilden, verstanden werden. Insbesondere bewirken die unterschiedlichen Nockenspuren unterschiedliche Ventilhübe. Unter einer „Angriffskontur” soll in diesem Zusammenhang eine Kontur verstanden werden, an der ein Schaltelement zur axialen Verschiebung des Nockenelements angreift, insbesondere, indem das Schaltelement in eine als Nut ausgeführte Angriffskontur eingreift oder eine als Rippe ausgeführte Angriffskontur umgreift.It is a valve drive device, in particular for an internal combustion engine, with at least one camshaft having at least one axially displaceable cam member having at least one multi-track cam and at least one attack contour, and with a housing fixedly arranged Schaltaktor for axial displacement of the at least one cam element, the includes axially displaceable switching element, which is in operative connection with the attack contour proposed. As a result, an attack contour can be achieved with a low axial extent. Thus, a space requirement of the cam member in the axial direction can be reduced and an existing space can be better utilized. In particular, an axial space for additional cam tracks of the cam member can be obtained. In this context, a "multi-track cam" is to be understood as meaning a cam with at least two partial cams, each of which forms different cam tracks. In particular, the different cam tracks cause different valve strokes. In this context, an "attack contour" is to be understood as meaning a contour on which a switching element engages for axial displacement of the cam element, in particular by the switching element engaging in an engagement contour embodied as a groove or embracing an attack contour embodied as a rib.
Ferner wird vorgeschlagen, dass das Schaltelement mit der Angriffskontur permanent in Wirkverbindung steht. Dadurch kann eine Einhaltung einer definierten Axialposition des Nockenelements gesichert und auf zusätzliche Bauteile für eine Sicherung der definierten Axialposition verzichtet werden. Ferner kann auf eine Anfahrphase, in der das Schaltelement in Kontakt mit der Angriffskontur gebracht werden muss, verzichtet werden und ein Ablauf der axialen Verschiebung des Nockenelements beschleunigt werden.It is also proposed that the switching element is permanently in operative connection with the attack contour. This ensures compliance with a defined axial position of the cam member and can be dispensed with additional components for securing the defined axial position. Furthermore, can be dispensed with a start-up phase in which the switching element must be brought into contact with the attack contour, and a sequence of the axial displacement of the cam member can be accelerated.
Weiterhin wird vorgeschlagen, dass der Schaltaktor parallelversetzt zu der Nockenwelle angeordnet ist. Dadurch können insbesondere eine einfache Konstruktion der Ventiltriebvorrichtung sowie eine raumfüllende Nutzung von Bauraum erreicht werden. Darunter, dass der Schaltaktor „achsparallel” zu der Nockenwelle angeordnet ist, soll in diesem Zusammenhang insbesondere verstanden werden, dass eine Achse, entlang der das Schaltelement verschoben wird, parallel zu einer Drehachse der Nockenwelle verläuft und nicht mit dieser zusammenfällt. Insbesondere ist der parallelversetzt zu der Nockenwelle angeordnete Schaltaktor damit verschieden von einem auf einem Drehstab innerhalb der Nockenwelle koaxial zu der Nockenwelle angeordneten Schaltaktor.Furthermore, it is proposed that the switching actuator is arranged offset in parallel to the camshaft. As a result, in particular, a simple design of the valve drive device and a space-filling use of installation space can be achieved. The fact that the switch actuator is arranged "axially parallel" to the camshaft, should be understood in this context, in particular, that an axis along which the switching element is displaced, is parallel to an axis of rotation of the camshaft and does not coincide with this. In particular, the switching actuator arranged offset in parallel with the camshaft is thus different from a switching actuator arranged coaxially with the camshaft on a torsion bar within the camshaft.
Des Weiteren wird vorgeschlagen, dass die Angriffskontur als umlaufende Rippe ausgeführt ist. Dadurch kann eine einfach zu konstruierende Angriffskontur erreicht werden.Furthermore, it is proposed that the attack contour is designed as a circumferential rib. As a result, an easy-to-construct attack contour can be achieved.
Die Erfindung betrifft ferner einen Brennkraftmaschine mit einer erfindungsgemäßen Ventiltriebvorrichtung.The invention further relates to an internal combustion engine having a valve drive device according to the invention.
Weitere Vorteile ergeben sich aus der folgenden Figurenbeschreibung. In der Figur ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Figur, die Figurenbeschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages will become apparent from the following description of the figures. In the figure, an embodiment of the invention is shown. The figure, the description of the figures and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Die einzige Figur zeigt eine Ventiltriebvorrichtung
Die Nockenwelle
Der Schaltaktor
Die Angriffskontur
Das Schaltelement
Der Schaltaktor
Die Angriffskontur
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- VentiltriebvorrichtungValve drive device
- 1111
- Nockenwellecamshaft
- 1212
- Triebwelledrive shaft
- 1313
- Nockenelementcam member
- 1414
- Nockencam
- 15 15
- Teilnockenpartial cams
- 1616
- Teilnockenpartial cams
- 1717
- Teilnockenpartial cams
- 1818
- Nockencam
- 1919
- Teilnockenpartial cams
- 2020
- Teilnockenpartial cams
- 2121
- Teilnockenpartial cams
- 2222
- Angriffskonturattack contour
- 2323
- SchaltaktorSwitch
- 2424
- Spindelspindle
- 2525
- Elektromotorelectric motor
- 2626
- Schaltelementswitching element
- 2727
- Eingriffsnutengagement
- 2828
- Nockenwellengehäusecamshaft housing
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 19611641 C1 [0002] DE 19611641 C1 [0002]
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015012044.1A DE102015012044A1 (en) | 2015-09-15 | 2015-09-15 | Valve train device, in particular for an internal combustion engine |
PCT/EP2016/001352 WO2017045736A1 (en) | 2015-09-15 | 2016-08-05 | Valve train device, in particular for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015012044.1A DE102015012044A1 (en) | 2015-09-15 | 2015-09-15 | Valve train device, in particular for an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102015012044A1 true DE102015012044A1 (en) | 2017-03-16 |
Family
ID=56571293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102015012044.1A Withdrawn DE102015012044A1 (en) | 2015-09-15 | 2015-09-15 | Valve train device, in particular for an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102015012044A1 (en) |
WO (1) | WO2017045736A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016012193A1 (en) | 2016-10-12 | 2018-04-12 | Daimler Ag | Valve drive device |
DE102017003789A1 (en) * | 2017-04-20 | 2018-10-25 | Daimler Ag | Valve train device, in particular for an internal combustion engine |
WO2018192822A1 (en) * | 2017-04-20 | 2018-10-25 | Daimler Ag | Valve train device |
DE102018009839A1 (en) | 2018-12-14 | 2020-06-18 | Daimler Ag | Valve train for an internal combustion engine, in particular a motor vehicle, and internal combustion engine for a motor vehicle |
CN111615586A (en) * | 2018-01-19 | 2020-09-01 | 戴姆勒股份公司 | Valve drive for an internal combustion engine, in particular of a motor vehicle |
US11162392B2 (en) * | 2017-09-26 | 2021-11-02 | Daimler Ag | Valve operating device, in particular for an internal combustion engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19611641C1 (en) | 1996-03-25 | 1997-06-05 | Porsche Ag | Valve operating cam drive for combustion engines |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5891317A (en) * | 1981-11-25 | 1983-05-31 | Honda Motor Co Ltd | Variable vlave timing mechanism |
JPH0211812A (en) * | 1988-06-30 | 1990-01-16 | Suzuki Motor Co Ltd | Variable valve timing device |
-
2015
- 2015-09-15 DE DE102015012044.1A patent/DE102015012044A1/en not_active Withdrawn
-
2016
- 2016-08-05 WO PCT/EP2016/001352 patent/WO2017045736A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19611641C1 (en) | 1996-03-25 | 1997-06-05 | Porsche Ag | Valve operating cam drive for combustion engines |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016012193A1 (en) | 2016-10-12 | 2018-04-12 | Daimler Ag | Valve drive device |
WO2018068874A1 (en) | 2016-10-12 | 2018-04-19 | Daimler Ag | Valve train device |
DE102017003789A1 (en) * | 2017-04-20 | 2018-10-25 | Daimler Ag | Valve train device, in particular for an internal combustion engine |
WO2018192822A1 (en) * | 2017-04-20 | 2018-10-25 | Daimler Ag | Valve train device |
US10794233B2 (en) | 2017-04-20 | 2020-10-06 | Daimler Ag | Valve drive device |
US11162392B2 (en) * | 2017-09-26 | 2021-11-02 | Daimler Ag | Valve operating device, in particular for an internal combustion engine |
CN111615586A (en) * | 2018-01-19 | 2020-09-01 | 戴姆勒股份公司 | Valve drive for an internal combustion engine, in particular of a motor vehicle |
DE102018000435B4 (en) * | 2018-01-19 | 2020-12-03 | Daimler Ag | Valve drive for an internal combustion engine. in particular a motor vehicle |
US11111828B2 (en) | 2018-01-19 | 2021-09-07 | Daimler Ag | Valvetrain for an internal combustion engine, in particular of a motor vehicle |
CN111615586B (en) * | 2018-01-19 | 2022-03-04 | 戴姆勒股份公司 | Valve drive for an internal combustion engine, in particular of a motor vehicle |
DE102018009839A1 (en) | 2018-12-14 | 2020-06-18 | Daimler Ag | Valve train for an internal combustion engine, in particular a motor vehicle, and internal combustion engine for a motor vehicle |
Also Published As
Publication number | Publication date |
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WO2017045736A1 (en) | 2017-03-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |