DE102018127595A1 - Device for variable adjustment of the timing of gas exchange valves with a magnetic adjuster integrated in a camshaft - Google Patents
Device for variable adjustment of the timing of gas exchange valves with a magnetic adjuster integrated in a camshaft Download PDFInfo
- Publication number
- DE102018127595A1 DE102018127595A1 DE102018127595.1A DE102018127595A DE102018127595A1 DE 102018127595 A1 DE102018127595 A1 DE 102018127595A1 DE 102018127595 A DE102018127595 A DE 102018127595A DE 102018127595 A1 DE102018127595 A1 DE 102018127595A1
- Authority
- DE
- Germany
- Prior art keywords
- camshaft
- adjuster
- magnetic
- central valve
- magnet
- 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- Withdrawn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
- 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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
-
- 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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
-
- 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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
- F01L2001/3443—Solenoid driven oil control valves
-
- 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
- F01L1/3442—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 hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
- F01L2001/34433—Location oil control valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Die Erfindung betrifft ein hydraulisches Nockenwellenverstellsystem (1) für eine Verbrennungskraftmaschine, mit einem hydraulischen Nockenwellenversteller (2), einer mit einem Rotor (3) des Nockenwellenverstellers (2) drehverbundenen Nockenwelle (4), einem zur Ansteuerung des Nockenwellenverstellers (2) vorbereiteten Zentralventil (5) sowie einem zur Verstellung des Zentralventils (5) vorgesehenen Magnetversteller (6), wobei der Magnetversteller (6) in einem zentrisch angeordneten Aufnahmeloch (7) der Nockenwelle (4) angeordnet ist.The invention relates to a hydraulic camshaft adjustment system (1) for an internal combustion engine, comprising a hydraulic camshaft adjuster (2), a camshaft (4) which is rotatably connected to a rotor (3) of the camshaft adjuster (2), and a central valve prepared for actuating the camshaft adjuster (2). 5) and a magnet adjuster (6) provided for adjusting the central valve (5), the magnet adjuster (6) being arranged in a centrally arranged receiving hole (7) in the camshaft (4).
Description
Die Erfindung betrifft eine Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Verbrennungskraftmaschine, mit einem hydraulischen Nockenwellenversteller, der vorzugsweise gemäß des Flügelzellentyps umgesetzt ist, einer mit einem Rotor des Nockenwellenverstellers drehverbundenen Nockenwelle, einem zur Ansteuerung des Nockenwellenverstellers vorbereiteten Zentralventil sowie einem zur Verstellung des Zentralventils vorgesehenen Magnetversteller.The invention relates to a device for variably adjusting the control times of gas exchange valves of an internal combustion engine, with a hydraulic camshaft adjuster, which is preferably implemented according to the wing cell type, a camshaft rotatably connected to a rotor of the camshaft adjuster, a central valve prepared for actuating the camshaft adjuster, and one for adjusting the central valve provided magnetic adjuster.
Es sind bereits prinzipiell Nockenwellenverstellsysteme bekannt, die sich durch das Anordnen und Vorsehen unterschiedlicher Ventile sowie Magnetversteller voneinander unterscheiden. Demnach gibt es das so genannte Zentralventilsystem in einer ersten Variante, in der ein Zentralmagnet fest / nicht rotierend mit einem Kettenkasten der Verbrennungskraftmaschine verbunden ist. Ein Pin des Zentralmagnets berührt einen rotierenden Kolben eines Zentralventils in einem Punktkontakt. Der Magnet ist ein Druckmagnet, die Rückstellung des Kolbens erfolgt meist durch eine Feder im Zentralventil. Das Zentralventil sitzt auf übliche Weise direkt innerhalb des Nockenwellenverstellers. In einer weiteren Variante dieses Zentralventilsystems ist der Zentralmagnet direkt am Versteller in Kettenkastenrichtung befestigt und rotiert mit. Die Stromversorgung der Zentralmagnete ist üblicherweise über Schleifkontakte gegeben.In principle, camshaft adjustment systems are already known which differ from one another in the arrangement and provision of different valves and magnet adjusters. Accordingly, there is the so-called central valve system in a first variant, in which a central magnet is fixed / non-rotatingly connected to a chain case of the internal combustion engine. A pin of the central magnet touches a rotating piston of a central valve in a point contact. The magnet is a pressure magnet, the piston is usually reset by a spring in the central valve. The central valve sits directly inside the camshaft adjuster in the usual way. In a further variant of this central valve system, the central magnet is attached directly to the adjuster in the direction of the chain box and rotates with it. The central magnets are usually supplied with power via sliding contacts.
Des Weiteren gibt es das so genannte Cartridgeventilsystem (auch als Remoteventilsystem oder Einsteckventilsystem bezeichnet), bei dem ein Magnet (Magnetversteller), vorzugsweise ebenfalls ein Druckmagnet, über einen Pin mit einem Kolben eines Cartridgeventils verbunden ist. Sowohl der Magnet als auch das Cartridgeventil rotieren nicht und sind fest mit einem Zylinderkopf der Verbrennungskraftmaschine verbunden. Über Ölleitungen im Zylinderkopf und einer Zentralschraube wird der Versteller üblicherweise angesteuert.There is also the so-called cartridge valve system (also referred to as a remote valve system or plug-in valve system), in which a magnet (magnet adjuster), preferably also a pressure magnet, is connected to a piston of a cartridge valve via a pin. Both the magnet and the cartridge valve do not rotate and are firmly connected to a cylinder head of the internal combustion engine. The adjuster is usually controlled via oil lines in the cylinder head and a central screw.
Bei diesen bekannten Ausführungen haben sich folgende Nachteile herausgestellt. Hinsichtlich des Zentralventilsystems besteht der Nachteil, dass eine relativ lange Toleranzkette durch die Ausbildung und Anordung des Zentralmagneten von der Verstelleranbindung bis zum Kettenkastenflansch zu überwinden ist. Dabei gehen etwa 40 % des Hubs (eines Ankers des Zentralmagneten) verloren, da in diesen 40 % des Hubs keine Veränderung der Schaltstellung des Zentralventils ausgeführt werden kann. Dies vergrößert wiederum den Magneten, der diesen Hub mit entsprechenden Kraftreserven zur Verfügung stellen muss. Somit nehmen die bekannten Zentralventilsysteme häufig relativ viel (axialen) Bauraum ein. Des Weiteren ist der entsprechende Kettenkasten aufwändig mit der Schnittstelle zu dem Magnetversteller zu versehen, da er auch zur Umwelt abgedichtet werden muss. Dies bedeutet wiederum einen relativ hohen Herstellaufwand. Um den Bauraum möglichst in axialer Richtung knapp zu halten und um dadurch eine möglichst geringe Baulänge der Verbrennungskraftmaschine zu erzielen, wird der Zentralmagnet häufig relativ flach ausgeführt; dies bewirkt jedoch ein relativ ungünstiges Verhältnis zwischen dem Spulenmaterial und der Kraftausbeute. Bei dem Cartridgeventilsystem hat es sich vor allem als nachteilig herausgestellt, dass die hierin vorhandenen Grundleitungen relativ lange ausgeführt sein müssen, was zu einer relativ langsamen Reaktion der Nockenwellenverstellung führt. Des Weiteren sind relativ viele Teile für die Ausbildung der Ölleitungen vorzusehen, wodurch der Herstellungsaufwand wiederum ungünstig beeinflusst wird.The following disadvantages have emerged in these known designs. With regard to the central valve system, there is the disadvantage that a relatively long tolerance chain can be overcome by designing and arranging the central magnet from the adjuster connection to the chain case flange. About 40% of the stroke (an armature of the central magnet) is lost, since no change in the switching position of the central valve can be carried out in this 40% of the stroke. This in turn increases the magnet, which has to provide this stroke with the corresponding power reserves. Thus, the known central valve systems often take up a relatively large (axial) installation space. Furthermore, the corresponding chain case has to be provided with the interface to the magnetic adjuster, since it also has to be sealed off from the environment. This in turn means a relatively high manufacturing effort. In order to keep the installation space as short as possible in the axial direction and thereby to achieve the smallest possible installation length of the internal combustion engine, the central magnet is often made relatively flat; however, this causes a relatively unfavorable relationship between the coil material and the power yield. In the case of the cartridge valve system, it has been found to be particularly disadvantageous that the base lines present therein have to be of relatively long construction, which leads to a relatively slow reaction of the camshaft adjustment. Furthermore, a relatively large number of parts are to be provided for the formation of the oil lines, which in turn adversely affects the production outlay.
Es ist daher die Aufgabe der vorliegenden Erfindung, die aus dem Stand der Technik bekannten Nachteile zu beheben und insbesondere eine Verstellvorrichtung zur Verfügung zu stellen, die eine möglichst geringe axiale Baulänge sowie einen geringen Herstellaufwand aufweist.It is therefore the object of the present invention to remedy the disadvantages known from the prior art and, in particular, to provide an adjusting device which has the smallest possible axial overall length and a low manufacturing outlay.
Dies wird erfindungsgemäß durch den Gegenstand des Anspruchs 1 gelöst, wobei der Magnetversteller in einem zentrisch angeordneten Aufnahmeloch der Nockenwelle angeordnet ist.This is achieved according to the invention by the subject matter of
Durch diese Bauweise wird der Magnetversteller unmittelbar in die Nockenwelle integriert und somit der axiale Bauraum gegenüber den aus dem Stand der Technik bekannten Ausführungen deutlich reduziert. Auch der Herstellaufwand wird relativ gering gehalten, da der Magnetversteller weitestgehend vollständig als Ganzes in die Nockenwelle integriert werden kann.With this design, the magnetic adjuster is integrated directly into the camshaft and the axial installation space is thus significantly reduced compared to the designs known from the prior art. The manufacturing outlay is also kept relatively low, since the magnetic adjuster can be integrated completely as a whole into the camshaft.
Weitere vorteilhafte Ausführungen sind mit den Unteransprüchen beansprucht und nachfolgend näher erläutert.Further advantageous designs are claimed with the subclaims and explained in more detail below.
Ist das Zentralventil in einer axialen Richtung in Bezug auf eine zentrale Drehachse der Nockenwelle (vorzugsweise unmittelbar / direkt) benachbart zu dem Magnetversteller in dem Aufnahmeloch angeordnet, wird eine noch kompaktere Anordnung ermöglicht. Auch das Zentralventil wird dann bevorzugt als Ganzes in das Aufnahmeloch eingeschoben.If the central valve is arranged in the receiving hole in an axial direction with respect to a central axis of rotation of the camshaft (preferably directly / directly) adjacent to the magnetic adjuster, an even more compact arrangement is made possible. The central valve is then also preferably inserted as a whole into the receiving hole.
Das Zentralventil und/oder der Magnetversteller sind jeweils bevorzugt durch zumindest einen Sicherungsring in der axialen Richtung innerhalb der Nockenwelle fixiert.The central valve and / or the magnetic adjuster are each preferably fixed in the axial direction within the camshaft by at least one retaining ring.
Der Nockenwellenversteller ist wiederum bevorzugt in radialer Richtung von außen auf einen das Aufnahmeloch ausbildenden Hohlwellenabschnitt der Nockenwelle aufgeschoben, wodurch weiterer axialer Bauraum eingespart wird.The camshaft adjuster is in turn preferably in the radial direction from the outside to a hole forming the receiving hole The hollow shaft section of the camshaft is pushed on, which saves further axial installation space.
Zweckmäßig ist es auch, wenn ein Gehäuse des Magnetverstellers unmittelbar durch den Hohlwellenabschnitt der Nockenwelle ausgebildet ist, wobei eine Spule, ein Polkern und/oder ein Joch des Magnetverstellers fest in dem Hohlwellenabschnitt aufgenommen sind. Ein Anker des Magnetverstellers, der in axialer Richtung relativverschieblich zu dem Polkern / der Spule angeordnet ist, befindet sich weiter bevorzugt unmittelbar mit einem Kolben des Zentralventils in Kontakt. Dadurch wird der Aufbau weiter vereinfacht.It is also expedient if a housing of the magnet adjuster is formed directly by the hollow shaft section of the camshaft, with a coil, a pole core and / or a yoke of the magnet adjuster being firmly accommodated in the hollow shaft section. An armature of the magnetic adjuster, which is arranged to be relatively displaceable in the axial direction relative to the pole core / coil, is further preferably in direct contact with a piston of the central valve. This further simplifies the structure.
Ist der Magnetversteller in der axialen Richtung überlappend zu einem die Nockenwelle radial durchdringenden Ölkanal angeordnet, wobei der Magnetversteller so ausgebildet ist, dass im Betrieb des Nockenwellenverstellers eine Ölzufuhr an der Spule vorbei zu dem Zentralventil hin stattfindet, wird der Magnetversteller gleichzeitig durch das zur Verstellung des Nockenwellenverstellers verwendete Öl gekühlt. Dadurch kann der Magnetversteller nochmals kompakter ausgebildet werden.If the magnetic adjuster overlaps in the axial direction with respect to an oil channel that radially penetrates the camshaft, the magnetic adjuster being designed so that during operation of the camshaft adjuster, oil is supplied past the coil to the central valve, the magnetic adjuster is at the same time used to adjust the Camshaft adjuster used cooled oil. As a result, the magnetic adjuster can be made even more compact.
Die Erfindung wird nun nachfolgend anhand einer Figur näher erläutert.The invention will now be explained in more detail with reference to a figure.
Es zeigt die einzige
Die Figur ist prinzipiell schematischer Natur und dient daher lediglich dem Verständnis der Erfindung.The figure is principally schematic in nature and therefore only serves to understand the invention.
In
Auf typische Weise ist in der Vorrichtung
Zur hydraulischen Ansteuerung des Nockenwellenverstellers
Erfindungsgemäß ist der Magnetversteller
Der Anker
Des Weiteren ist erkennbar, dass der Magnetversteller
Der weitere Aufbau des Zentralventils
In anderen Worten ausgedrückt, wird in der vorliegenden Erfindung der Magnet
Wie in
BezugszeichenlisteReference list
- 11
- Vorrichtungcontraption
- 22nd
- NockenwellenverstellerCamshaft adjuster
- 33rd
- Rotorrotor
- 44th
- Nockenwellecamshaft
- 55
- ZentralventilCentral valve
- 66
- MagnetverstellerMagnetic adjuster
- 77
- AufnahmelochReceiving hole
- 88th
- DrehachseAxis of rotation
- 99
- Gehäusecasing
- 1010th
- HohlwellenabschnittHollow shaft section
- 1111
- SpuleKitchen sink
- 1212th
- PolkernPolkern
- 1313
- Jochyoke
- 1414
- ÖlkanalOil channel
- 1515
- Kolbenpiston
- 1616
- Statorstator
- 17a17a
- erster Sicherungsringfirst circlip
- 17b17b
- zweiter Sicherungsringsecond circlip
- 1818th
- Ankeranchor
- 1919th
- SpulenträgerCoil carrier
- 2020th
- SchleifkontaktSliding contact
- 2121
- MagnetflussMagnetic flux
- 2222
- ÖlströmungOil flow
- 2323
- UmspritzungOvermolding
- 2424th
- HülseSleeve
- 2525th
- Federfeather
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018127595.1A DE102018127595A1 (en) | 2018-11-06 | 2018-11-06 | Device for variable adjustment of the timing of gas exchange valves with a magnetic adjuster integrated in a camshaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018127595.1A DE102018127595A1 (en) | 2018-11-06 | 2018-11-06 | Device for variable adjustment of the timing of gas exchange valves with a magnetic adjuster integrated in a camshaft |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102018127595A1 true DE102018127595A1 (en) | 2020-05-07 |
Family
ID=70469842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102018127595.1A Withdrawn DE102018127595A1 (en) | 2018-11-06 | 2018-11-06 | Device for variable adjustment of the timing of gas exchange valves with a magnetic adjuster integrated in a camshaft |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102018127595A1 (en) |
-
2018
- 2018-11-06 DE DE102018127595.1A patent/DE102018127595A1/en not_active Withdrawn
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