EP0930421B1 - Cylinderhead - Google Patents
Cylinderhead Download PDFInfo
- Publication number
- EP0930421B1 EP0930421B1 EP99100592A EP99100592A EP0930421B1 EP 0930421 B1 EP0930421 B1 EP 0930421B1 EP 99100592 A EP99100592 A EP 99100592A EP 99100592 A EP99100592 A EP 99100592A EP 0930421 B1 EP0930421 B1 EP 0930421B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- inlet
- exhaust
- valves
- cylinder head
- 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.)
- Expired - Lifetime
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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
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
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- 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
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
- F01L1/262—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with valve stems disposed radially from a centre which is substantially the centre of curvature of the upper wall surface of a combustion chamber
Definitions
- the present invention relates to a cylinder head.
- the multi-valve internal combustion engine from the publication is an example of this EP 0 144 179 B1.
- This internal combustion engine has one Cylinder head with five gas exchange valves, whose axes are in one Cut common point on the cylinder axis.
- a single camshaft is provided, which is approximately in the middle between the inlet valves and the outlet valves is arranged. Above or below this camshaft there are two thru axles for the valve actuation levers provided so that the cylinder head is very high is executed.
- From US 5,673,660 is a cylinder head according to the preamble of claim 1 with an intake camshaft and an exhaust camshaft known in which an ignition or injection device is arranged substantially parallel to the cylinder axis and inlet valve and the exhaust valve is substantially radially inclined to the cylinder axis are.
- the cylinder head has standing compensating elements and valve actuation levers on.
- the valve actuation levers point from the intake or exhaust valves starting in the direction transverse to the engine longitudinal axis to the outside away where they are stored on compensating elements. This training the Arrangement of valve, valve actuation lever and compensating elements and thus the entire engine is very space-consuming.
- an intake camshaft and an exhaust camshaft has an ignition or injection device per cylinder, which is arranged substantially parallel to the cylinder axis, intake valves and exhaust valves which are substantially radially inclined to the cylinder axis, has standing compensating elements and valve actuating lever, wherein the compensating elements adjacent to the ignition or injection device are arranged, and the valve actuating lever each with one end attack one of the intake or exhaust valves from the stem ends of the radial inlet or outlet valves face inwards and with their other End on one of the standing compensating elements are favored the cylinder head has an optimal combustion chamber shape and is also very compact and thus built up to save space.
- valve actuation levers point from the stem ends of the radial intake and exhaust valves to the inside where they on the standing compensation elements next to the ignition or injection device are stored.
- the intake camshaft is above the valve actuation lever or the exhaust camshaft, respectively the valve actuation lever rests on the center area.
- valve operating levers to the intake and exhaust camshafts are oriented vertically, the valve actuating lever with its attack one end of one of the intake or exhaust valves and with their other end mounted on one of the standing compensating elements are.
- the intake camshaft and the exhaust camshaft advantageously cut or tangent the cylinder in a projection along the cylinder axis. This feature realizes that the two camshafts are close together lie and that the cylinder head despite the radially inclined Einund Exhaust valves in the axial direction of the camshafts are relatively narrow is.
- the intake camshaft and the Exhaust camshaft for contact with the valve actuation levers oriented perpendicular to it oblique cam contours.
- the oblique cam contours can the two camshafts with the radially inclined Einund Exhaust valves interacting valve actuation lever free of lateral forces actuate.
- the ignition or injection device can in relation to the cylinder axis Direction to the exhaust camshaft be arranged offset. Because with one The valve plates have the same number of intake and exhaust valves per cylinder the inlet valves to favor the gas exchange mostly larger than that Valve plate of the exhaust valves, so that the ignition or injection device taking into account the spatial conditions for the exhaust camshaft or is arranged offset to the outlet side. This applies of course, even if there are a large number of intake valves per cylinder is provided as exhaust valves.
- the inlet and outlet valves preferably point along in a projection the axial direction of the intake and exhaust camshafts of different sizes Angle of inclination. Because with an equal number of admission and Exhaust valves per cylinder optimized the shape of the combustion chamber by the Intake valves with the larger valve plates to the cylinder axis less strong are inclined than the outlet valves with the smaller valve plates.
- the inlet and outlet valves preferably have one Projection perpendicular to the axial direction of the intake and exhaust camshafts in each case equally large angles of inclination. So the valve train can still have a certain symmetry.
- One of the compensating elements for mounting one of the valve actuation levers for one of the inlet valves and one of the compensating elements for storing one of the valve actuation levers for one of the exhaust valves are arranged close to each other. In this way the valve train of an intake and an exhaust valve is spatially combined, so that in the area between two of the intake and exhaust valves sufficient space remains for an additional ignition or injection device.
- two valve operating levers which are arranged closely adjacent to each other Compensating elements are assigned to the axial direction of the Intake camshaft and the exhaust camshaft each tilted slightly. In order to become the camshaft axial forces acting on the respective camshafts reduced or compensated within the individual cylinders.
- valve actuation levers face against the intake camshaft or each of the exhaust camshafts is mounted approximately centrally Roll up to reduce the frictional resistance.
- the cylinder head 1 has an intake camshaft 2 and a Austatternokkenwelle 2 'and one ignition device 4 per cylinder 3, two intake valves 5 and two exhaust valves 5 ', four standing compensating elements 6, 6' and four Valve actuation lever 7, 7 'on. There is also one injector per cylinder 3 8 provided.
- FIGS. 1 to 3 Half of the cylinder with an inlet valve 5 and an outlet valve 5 ', two Compensation elements 6, 6 'and two valve actuation levers 7, 7' shown.
- the other half of the cylinder can be mirror-symmetrical to Introduce line E trained.
- the intake camshaft 2 and the exhaust camshaft 2 ' are parallel to each other arranged and cut in a projection along the cylinder axis Z the cylinder 3, since they are relatively close to each other.
- one of the cylinders 3 is below the cylinder head 1 indicated.
- An ignition device is offset parallel to the axis Z of the cylinder 3 4 arranged.
- the igniter 4 is from the intake camshaft 2 offset towards the exhaust camshaft 2 ', since between an injector 8 is arranged in the two inlet valves 5.
- an ignition device is arranged instead of the ignition device 4 Injector 8 and that instead of the injector 8 an ignition device is arranged.
- the two intake valves 5 and the two exhaust valves 5 ' are to the Z axis of the cylinder 3 substantially inclined radially. It is striking that the valve disc 10 of the intake valves 5 are larger than the valve plate 10 'of the exhaust valves 5 '. It can also be seen from FIGS. 1 and 2 that the inlet valves 5 and the exhaust valves 5 'in a projection along the axial direction N of the intake camshaft 2 and the exhaust camshaft 2 'different have large inclination angles ⁇ , ⁇ ', the inclination angle ⁇ being the Inlet valves 5 is smaller than the angle of inclination ⁇ 'of the outlet valves 5'.
- the compensating elements 6, 6 ' are arranged in parallel and adjacent to the ignition device 4.
- the Compensating elements 6, 6 ' are symmetrical about the axis Z of the cylinder 3 arranged.
- valve actuation levers 7, 7 ' To actuate the four radial inlet and outlet valves 5, 5 'are four valve actuation levers 7, 7 'provided. Grip the valve actuation levers 7, 7 ' with one end each at one of the inlet or outlet valves 5, 5 ' and are at their other end on one of the compensating elements 6, 6 ' stored. So are the valve operating lever 7 for the inlet valves 5 and Valve actuation lever 7 'for the exhaust valves 5' on two pairs of compensating elements 6, 6 'and are the two valve actuation levers 7, 7 'perpendicular to the intake camshaft 2 and the exhaust camshaft 2' oriented.
- valve actuation levers 7, 7 ' finally an approximately centrally mounted roller 11, 11 ', which with the intake camshaft 2 or the exhaust camshaft 2' communicates.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
Die vorliegende Erfindung betrifft einen Zylinderkopf.The present invention relates to a cylinder head.
Um bei Brennkraftmaschinen eine optimale Brennraumform zu verwirklichen, ist es aus dem Stand der Technik bekannt, Zylinderköpfe mit zu den Zylinderachsen radial geneigten Gaswechselventilen auszustatten. Bei solchen Zylinderköpfen stößt die Unterbringung des auf die radialen Gaswechselventile aufbauenden Ventiltriebs jedoch auf Probleme.In order to achieve an optimal combustion chamber shape in internal combustion engines, it is known from the prior art to include cylinder heads with the cylinder axes radially inclined gas exchange valves. In such The cylinder heads encounter the housing on the radial gas exchange valves building valve train on problems.
Als Beispiel hierfür wird die Mehrventil-Brennkraftmaschine aus der Druckschrift EP 0 144 179 B1 angeführt. Diese Brennkraftmaschine weist einen Zylinderkopf mit fünf Gaswechselventilen auf, deren Achsen sich in einem gemeinsamen Punkt auf der Zylinderachse schneiden. Zur Ansteuerung dieser Ventile ist eine einzige Nockenwelle vorgesehen, welche etwa mittig zwischen den Einlaßventilen und den Auslaßventilen angeordnet ist. Oberhalb oder unterhalb dieser Nockenwelle sind dort zwei Steckachsen für die Ventilbetätigungshebel vorgesehen, so daß der Zylinderkopf sehr hochbauend ausgeführt ist.The multi-valve internal combustion engine from the publication is an example of this EP 0 144 179 B1. This internal combustion engine has one Cylinder head with five gas exchange valves, whose axes are in one Cut common point on the cylinder axis. To control this Valves, a single camshaft is provided, which is approximately in the middle between the inlet valves and the outlet valves is arranged. Above or below this camshaft there are two thru axles for the valve actuation levers provided so that the cylinder head is very high is executed.
Ein anderes Beispiel kann aus der Druckschrift US 4,558,667 entnommen werden, welche einen Ventiltrieb für eine Brennkraftmaschine betrifft. Dieser Ventiltrieb treibt vier radial angeordnete Gaswechselventile, indem jedes Gaswechselventil von zwei zueinander senkrecht stehenden Ventilbetätigungshebeln beaufschlagt wird und indem für die Ventilbetätigungshebel parallel sowie senkrecht zu den Einlaß- und Auslaßnockenwellen angeordnete Steckachsen vorgesehen sind. Aufgrund der doppelten Anzahl von Ventilbetätigungshebeln und Steckachsen ist leicht einzusehen, daß auch die Unterbringung dieses Ventiltriebs Probleme aufwirft.Another example can be found in US Pat. No. 4,558,667 , which relates to a valve train for an internal combustion engine. This Valve train drives four radially arranged gas exchange valves by each Gas exchange valve from two mutually perpendicular valve actuation levers is acted upon and by parallel for the valve actuation lever and arranged perpendicular to the intake and exhaust camshafts Thru axles are provided. Due to the double number of valve actuation levers and thru axles is easy to see that the Housing this valve train poses problems.
Aus der US 5,673,660 ist ein Zylinderkopf gemäß Oberbegriff des Anspruchs 1 mit einer Einlaßnockenwelle und
einer Auslaßnockenwelle bekannt, bei der eine Zünd- oder Einspritzvorrichtung
zur Zylinderachse im wesentlichen parallel angeordnet ist und Einlaßventil
und Auslaßventil zur Zylinderachse im wesentlichen radial geneigt
sind. Der Zylinderkopf weist stehende Ausgleichselemente und Ventilbetätigungshebel
auf. Die Ventilbetätigungshebel weisen von den Ein- oder Auslaßventilen
ausgehend in Richtung quer zur Motorlängsachse nach außen
weg, wo sie auf Ausgleichselementen gelagert sind. Diese Ausbildung der
Anordnung von Ventil, Ventilbetätigungshebel und Ausgleichselementen und
somit des gesamten Motors ist sehr raumgreifend.From US 5,673,660 is a cylinder head according to the preamble of
Es ist somit Aufgabe der vorliegenden Erfindung, einen Zylinderkopf zu realisieren, der eine optimale Brennraumform erlaubt und gleichzeitig einen platzsparend untergebrachten Ventiltrieb aufweist. It is therefore an object of the present invention to implement a cylinder head which allows an optimal combustion chamber shape and at the same time one has space-saving valve train.
Gelöst wird diese Aufgabe durch einen Zylinderkopf mit den Merkmalen des
Anspruchs 1. Indem der Zylinderkopf eine Einlaßnockenwelle und eine Auslaßnockenwelle
aufweist, pro Zylinder eine Zünd- oder Einspritzvorrichtung,
die zur Zylinderachse im wesentlichen parallel angeordnet ist, Einlaßventile
und Auslaßventile, die zur Zylinderachse im wesentlichen radial geneigt sind,
stehende Ausgleichselemente und Ventilbetätigungshebel aufweist, wobei
die Ausgleichselemente benachbart zu der Zünd- oder Einspritzvorrichtung
angeordnet sind, und die Ventilbetätigungshebel jeweils mit ihrem einen Ende
an einem der Ein- oder Auslaßventile angreifen, von den Schaftenden der
radialen Ein- oder Auslaßventile nach innen weisen und mit ihrem anderen
Ende auf einem der stehenden Ausgleichselemente gelagert sind, begünstigt
der Zylinderkopf eine optimale Brennraumform und ist zugleich sehr kompakt
und damit platzsparend aufgebaut. Denn die Ventilbetätigungshebel weisen
von den Schaftenden der radialen Ein- und Auslaßventile nach innen, wo sie
auf den stehenden Ausgleichselementen neben der Zünd- oder Einspritzeinrichtung
gelagert sind. Oberhalb der Ventilbetätigungshebel ist die Einlaßnockenwelle
beziehungsweise die Auslaßnockenwelle angeordnet, die jeweils
am Mittenbereich der Ventilbetätigungshebel anliegt.This task is solved by a cylinder head with the characteristics of
Besonders vorteilhaft ist die Ausbildung gemäß den Merkmalen des Anspruchs 10, bei dem die Ventilbetätigungshebel zu Einlaß- und zu Auslaßnockenwelle senkrecht orientiert sind, wobei die Ventilbetätigungshebel mit ihrem einen Ende an einem der Ein- oder Auslaßventile angreifen und mit ihrem anderen Ende auf einem der stehenden Ausgleichselemente gelagert sind.The training according to the features of the claim is particularly advantageous 10, in which the valve operating levers to the intake and exhaust camshafts are oriented vertically, the valve actuating lever with its attack one end of one of the intake or exhaust valves and with their other end mounted on one of the standing compensating elements are.
Vorteilhaft schneiden oder tangieren die Einlaßnockenwelle und die Auslaßnockenwelle den Zylinder in einer Projektion entlang der Zylinderachse. Durch dieses Merkmal ist verwirklicht, daß die beiden Nockenwellen eng nebeneinander liegen und daß der Zylinderkopf trotz der radial geneigten Einund Auslaßventile in Achsrichtung der Nockenwellen relativ schmalbauend ist. The intake camshaft and the exhaust camshaft advantageously cut or tangent the cylinder in a projection along the cylinder axis. This feature realizes that the two camshafts are close together lie and that the cylinder head despite the radially inclined Einund Exhaust valves in the axial direction of the camshafts are relatively narrow is.
In einer besonderen Ausführungsform weist die Einlaßnockenwelle und die Auslaßnockenwelle zur Anlage an den dazu senkrecht orientierten Ventilbetätigungshebeln schräge Nockenkonturen auf. Mittels der schrägen Nockenkonturen können die beiden Nockenwellen die mit den radial geneigten Einund Auslaßventilen zusammenwirkenden Ventilbetätigungshebel querkräftefrei betätigen.In a particular embodiment, the intake camshaft and the Exhaust camshaft for contact with the valve actuation levers oriented perpendicular to it oblique cam contours. By means of the oblique cam contours can the two camshafts with the radially inclined Einund Exhaust valves interacting valve actuation lever free of lateral forces actuate.
Die Zünd- oder Einspritzvorrichtung kann gegenüber der Zylinderachse in Richtung zur Auslaßnockenwelle versetzt angeordnet sein. Denn bei einer gleichen Anzahl von Ein- und Auslaßventilen pro Zylinder sind die Ventilteller der Einlaßventile zur Begünstigung des Gaswechsels meist größer als die Ventilteller der Auslaßventile, so daß die Zünd- oder Einspritzvorrichtung unter Berücksichtigung der räumlichen Gegebenheiten zur Auslaßnockenwelle beziehungsweise zur Auslaßseite hin versetzt angeordnet ist. Dies gilt natürlich auch dann, wenn pro Zylinder eine größere Anzahl von Einlaßventilen als Auslaßventile vorgesehen ist.The ignition or injection device can in relation to the cylinder axis Direction to the exhaust camshaft be arranged offset. Because with one The valve plates have the same number of intake and exhaust valves per cylinder the inlet valves to favor the gas exchange mostly larger than that Valve plate of the exhaust valves, so that the ignition or injection device taking into account the spatial conditions for the exhaust camshaft or is arranged offset to the outlet side. this applies of course, even if there are a large number of intake valves per cylinder is provided as exhaust valves.
Bevorzugt weisen die Ein- und die Auslaßventile in einer Projektion entlang der Achsrichtung der Ein- und Auslaßnockenwelle unterschiedlich große Neigungswinkel auf. Denn damit wird bei einer gleichen Anzahl von Einlaßund Auslaßventilen pro Zylinder die Brennraumform optimiert, indem die Einlaßventile mit den größeren Ventiltellem zur Zylinderachse weniger stark geneigt sind als die Auslaßventile mit den kleineren Ventiltellern.The inlet and outlet valves preferably point along in a projection the axial direction of the intake and exhaust camshafts of different sizes Angle of inclination. Because with an equal number of admission and Exhaust valves per cylinder optimized the shape of the combustion chamber by the Intake valves with the larger valve plates to the cylinder axis less strong are inclined than the outlet valves with the smaller valve plates.
Gleichermaßen bevorzugt weisen die Ein- und die Auslaßventile in einer Projektion senkrecht zur Achsrichtung der Ein- und Auslaßnockenwelle jeweils gleich große Neigungswinkel auf. Somit kann der Ventiltrieb dennoch eine gewisse Symmetrie aufweisen.Likewise, the inlet and outlet valves preferably have one Projection perpendicular to the axial direction of the intake and exhaust camshafts in each case equally large angles of inclination. So the valve train can still have a certain symmetry.
Jeweils eines der Ausgleichselemente zur Lagerung eines der Ventilbetätigungshebel für eines der Einlaßventile und jeweils eines der Ausgleichselemente zur Lagerung eines der Ventilbetätigungshebel für eines der Auslaßventile sind eng benachbart nebeneinander angeordnet. Auf diese Weise wird der Ventiltrieb eines Ein- und eines Auslaßventils räumlich zusammengefaßt, so daß im Bereich zwischen je zwei der Ein- und Auslaßventile noch ausreichend Platz für eine zusätzliche Zünd- oder Einspritzvorrichtung verbleibt.One of the compensating elements for mounting one of the valve actuation levers for one of the inlet valves and one of the compensating elements for storing one of the valve actuation levers for one of the exhaust valves are arranged close to each other. In this way the valve train of an intake and an exhaust valve is spatially combined, so that in the area between two of the intake and exhaust valves sufficient space remains for an additional ignition or injection device.
Passend zu der besonderen Ausführungsform gemäß Anspruch 3 sind die beiden Ventilbetätigungshebel, die den eng benachbart nebeneinander angeordneten Ausgleichselementen zugeordnet sind, zur Achsrichtung der Einlaßnockenwelle und der Auslaßnockenwelle jeweils leicht gekippt. Damit werden die auf die jeweiligen Nockenwellen wirkenden Nockenwellenaxialkräfte innerhalb der einzelnen Zylinder reduziert beziehungsweise kompensiert.Suitable for the special embodiment according to claim 3 two valve operating levers, which are arranged closely adjacent to each other Compensating elements are assigned to the axial direction of the Intake camshaft and the exhaust camshaft each tilted slightly. In order to become the camshaft axial forces acting on the respective camshafts reduced or compensated within the individual cylinders.
Außerdem weisen die Ventilbetätigungshebel zur Anlage an der Einlaßnokkenwelle oder der Auslaßnockenwelle jeweils eine annähernd mittig gelagerte Rolle auf, um die Reibwiderstände zu verringern.In addition, the valve actuation levers face against the intake camshaft or each of the exhaust camshafts is mounted approximately centrally Roll up to reduce the frictional resistance.
Die vorliegende Erfindung wird anhand der nachfolgenden Zeichnungsfiguren näher erläutert. Es zeigen:
Figur 1- Eine Draufsicht des erfindungsgemäßen Zylinderkopfes in schematischer Darstellung;
Figur 2- eine Seitenansicht des Zylinderkopfes aus
Figur 1 entlang der Linie II-II; und Figur 3- eine Seitenansicht des Zylinderkopfes aus
Figur 1 entlang der Ansichtsrichtung III.
- Figure 1
- A plan view of the cylinder head according to the invention in a schematic representation;
- Figure 2
- a side view of the cylinder head of Figure 1 along the line II-II; and
- Figure 3
- a side view of the cylinder head of Figure 1 along the viewing direction III.
Der Zylinderkopf 1 weist eine Einlaßnockenwelle 2 sowie eine Austaßnokkenwelle
2' und pro Zylinder 3 eine Zündeinrichtung 4, zwei Einlaßventile 5
und zwei Auslaßventile 5', vier stehende Ausgleichselemente 6, 6' und vier
Ventilbetätigungshebel 7, 7' auf. Außerdem ist pro Zylinder 3 noch eine Einspritzvorrichtung
8 vorgesehen.The
Aus Gründen der Vereinfachung ist in den Figuren 1 bis 3 jeweils nur eine
Zylinderhalbseite mit einem Einlaßventil 5 und einem Auslaßventil 5', zwei
Ausgleichselementen 6, 6' und zwei Ventilbetätigungshebeln 7, 7' dargestellt.
Die andere Zylinderhalbseite kann man sich spiegelsymmetrisch zur
Linie E ausgebildet vorstellen.For reasons of simplification, only one is shown in FIGS. 1 to 3
Half of the cylinder with an
Die Einlaßnockenwelle 2 und die Auslaßnockenwelle 2' sind parallel zueinander
angeordnet und schneiden in einer Projektion entlang der Zylinderachse
Z den Zylinder 3, da sie relativ eng benachbart nebeneinander liegen.
Die Einlaßnockenwelle 2 und die Auslaßnockenwelle 2' tragen jeweils eine
gleiche Anzahl von Nocken 9, 9' mit schrägen Nockenkonturen, wodurch die
Kraftübertragung von den Nocken 9, 9' auf die Ventilbetätigungshebel 7, 7'
querkräftefrei erfolgen kann.The
In den Figuren 1 bis 3 ist unterhalb des Zylinderkopfes 1 einer der Zylinder 3
angedeutet. Parallel versetzt zu der Achse Z des Zylinders 3 ist eine Zündvorrichtung
4 angeordnet. Die Zündvorrichtung 4 ist von der Einlaßnockenwelle
2 weg in Richtung zur der Auslaßnockenwelle 2' versetzt, da zwischen
den beiden Einlaßventilen 5 eine Einspritzvorrichtung 8 angeordnet ist. Natürlich
wäre aber auch denkbar, daß anstelle der Zündvorrichtung 4 eine
Einspritzvorrichtung 8 und daß anstelle der Einspritzvorrichtung 8 eine Zündvorrichtung
angeordnet ist. In FIGS. 1 to 3, one of the
Die beiden Einlaßventile 5 und die beiden Auslaßventile 5' sind zur Achse Z
des Zylinders 3 im wesentlichen radial geneigt. Auffällig ist, daß die Ventilteller
10 der Einlaßventile 5 größer sind als die Ventilteller 10' der Auslaßventile
5'. Außerdem kann man aus den Figuren 1 und 2 entnehmen, daß die Einlaßventile
5 und die Auslaßventile 5' in einer Projektion entlang der Achsrichtung
N der Einlaßnockenwelle 2 und der Auslaßnockenwelle 2' unterschiedlich
große Neigungswinkel α, α' aufweisen, wobei der Neigungswinkel α der
Einlaßventile 5 kleiner ist als der Neigungswinkel α' der Auslaßventile 5'.
Und aus den Figuren 1 und 3 wird deutlich, daß die Einlaßventile 5 und die
Auslaßventile 5' in einer Projektion senkrecht zur Achsrichtung N der Einlaßnockenwelle
2 und der Auslaßnockenwelle 2' gleich große Neigungswinkel β,
β' aufweisen.The two
In Achsrichtung N der Einlaßnockenwelle 2 und der Auslaßnockenwelle 2' ist
zu beiden Seiten der Zündvorrichtung 4 jeweils ein Paar von stehenden
Ausgleichselementen 6, 6' angeordnet, wobei die Ausgleichselemente 6, 6'
parallel und benachbart zu der Zündvorrichtung 4 angeordnet sind. Die
Ausgleichselemente 6, 6' sind dabei zur Achse Z des Zylinders 3 symmetrisch
angeordnet.In the axial direction N of the
Zur Betätigung der vier radialen Ein- und Auslaßventile 5, 5' sind vier Ventilbetätigungshebel
7, 7' vorgesehen. Die Ventilbetätigungshebel 7, 7' greifen
mit ihrem einen Ende jeweils an einem der Ein- oder Auslaßventile 5, 5' an
und sind mit ihrem anderen Ende auf einem der Ausgleichselemente 6, 6'
gelagert. So sind die Ventilbetätigungshebel 7 für die Einlaßventile 5 und die
Ventilbetätigungshebel 7' für die Auslaßventile 5' auf zwei Paaren von Ausgleichselementen
6, 6' gelagert und sind die beiden Ventilbetätigungshebel
7, 7' zu der Einlaßnockenwelle 2 und der Auslaßnockenwelle 2' senkrecht
orientiert.To actuate the four radial inlet and
Außerdem sind die Ventilbetätigungshebel 7, 7' zur Achsrichtung N der Einlaßnockenwelle
2 und der Auslaßnockenwelle 2' jeweils leicht gekippt, damit
auch die Kraftübertragung von den Ventilbetätigungshebeln 7, 7' auf die Einund
Auslaßventile 5, 5' querkräftefrei erfolgen kann.In addition, the
Zur Verminderung der Reibung des Ventiltriebs weisen die Ventilbetätigungshebel
7, 7' schließlich jeweils eine annähernd mittig gelagerte Rolle 11,
11' auf, welche mit der Einlaßnockenwelle 2 oder der Auslaßnockenwelle 2'
in Verbindung steht.To reduce the friction of the valve train, the valve actuation levers
7, 7 'finally an approximately centrally mounted
Claims (10)
- A cylinder head having one inlet camshaft (2) and one exhaust camshaft (2') and comprising per cylinder (3)an ignition or fuel injection device (4) arranged substantially parallel to the cylinder axis (Z),inlet valves (5) and exhaust valves (5') which are inclined substantially radially with respect to the cylinder axis (Z) and which have angles of inclination (α, α') in a projection along the axial direction (N) of the inlet camshaft (2) and of the exhaust camshaft (2'), and angles of inclination (β, β') in a projection perpendicular to the axial direction (N) of the inlet camshaft (2) and of the exhaust camshaft (2'), andvertical compensator elements (6, 6') and valve actuating levers (7, 7'), characterised in that the vertical compensator elements are arranged substantially parallel and adjacent to the ignition or fuel injection device (4), and in that the valve actuating levers (7, 7') engage with one of their ends against one of the inlet or exhaust valves (5, 5'), are oriented inwardly from the ends of the stems of the radial inlet or exhaust valves (5, 5') and are joumalled with their other end on one of the vertical compensator elements (6, 6').
- A cylinder head according to Claim 1, characterised in that the inlet camshaft (2) and the exhaust camshaft (2') intersect or are at least tangential to the cylinder (3) in a projection along the cylinder axis (Z).
- A cylinder head according to any/either of claims 1 or 2, characterised in that the inlet camshaft (2) and the exhaust camshaft (2') have cams (9, 9') with inclined cam contours for abutment against the valve actuating levers (7, 7') oriented perpendicularly thereto.
- A cylinder head according to any one of claims 1 to 3, characterised in that the ignition or fuel injection device (4) is arranged to be offset in the direction towards the exhaust camshaft (2') with respect to the cylinder axis (Z).
- A cylinder head according to any one of claims 1 to 4, characterised in that the inlet valves (5) and the exhaust valves (5') have angles of inclination (α, α') of different magnitudes in a projection along the axial direction (N) of the inlet camshaft (2) and of the exhaust camshaft (2').
- A cylinder head according to any one of claims 1 to 5, characterised in that the inlet valves (5) and the exhaust valves (5') have angles of inclination (β, β') of equal magnitude in a projection perpendicular to the axial direction (N) of the inlet camshaft (2) and of the exhaust camshaft (2').
- A cylinder head according to any one of claims 1 to 6, characterised in that one of the compensator elements (6, 6') for joumalling one of the valve actuating levers (7) for one of the inlet valves (5), and one of the compensator elements (6, 6') for joumalling one of the valve actuating levers (7') for one of the exhaust valves (5') are in each case arranged closely adjacent to one another.
- A cylinder head according to any one of claims 1 to 7, characterised in that the two valve actuating levers (7, 7') associated with the closely adjacently arranged compensator elements (6, 6') are in each case disposed at a small inclination with respect to the axial direction (N) of the inlet camshaft (2) and of the exhaust camshaft (2').
- A cylinder head according to any one of claims 1 to 8, characterised in that the valve actuating levers (7, 7') have in each case a roller (11, 11') journalled approximately centrally thereon for engaging against the inlet camshaft (2) or the exhaust camshaft (2').
- A cylinder head according to the features of Claim 1, characterised in that the valve actuating levers are oriented perpendicularly to the inlet and exhaust camshafts, one end of the valve actuating levers engaging on one of the inlet or exhaust valves (5, 5') and the other end being joumalled on one or the vertical compensator elements (6, 6').
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19801606 | 1998-01-17 | ||
| DE19801606A DE19801606A1 (en) | 1998-01-17 | 1998-01-17 | Cylinder head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0930421A1 EP0930421A1 (en) | 1999-07-21 |
| EP0930421B1 true EP0930421B1 (en) | 2003-05-07 |
Family
ID=7854885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99100592A Expired - Lifetime EP0930421B1 (en) | 1998-01-17 | 1999-01-14 | Cylinderhead |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0930421B1 (en) |
| DE (2) | DE19801606A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400724A (en) * | 2010-09-16 | 2012-04-04 | 本田技研工业株式会社 | Valve-mechanism-equipped engine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0990774B1 (en) * | 1998-09-30 | 2004-07-21 | Yamaha Hatsudoki Kabushiki Kaisha | Three-dimensional cam device and method of making a three-dimensional cam for a valve drive system for engines |
| DE19953419A1 (en) * | 1999-11-06 | 2001-05-10 | Deutz Ag | Internal combustion engine with gas reverser valve operates valve by roller lever as force transfer link between valve shaft and camshaft using gray iron for cylinder head and crankcase. |
| JP4627121B2 (en) | 2001-06-12 | 2011-02-09 | ヤマハ発動機株式会社 | 3D cam and 3D cam grinding machine |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4333426A (en) * | 1980-01-04 | 1982-06-08 | Ford Motor Company | Internal combustion engine construction |
| AU545712B2 (en) | 1982-07-23 | 1985-07-25 | Honda Giken Kogyo Kabushiki Kaisha | I.c. engine valve actuating apparatus |
| DE3469309D1 (en) | 1983-11-25 | 1988-03-17 | Honda Motor Co Ltd | Multiple-valved internal combustion engine |
| DE3838305A1 (en) * | 1988-11-11 | 1990-05-17 | Audi Ag | Cylinder head of an internal combustion engine |
| JPH0337308A (en) * | 1989-06-30 | 1991-02-18 | Mazda Motor Corp | Valve system of dohc engine |
| DE3943727C2 (en) * | 1989-12-11 | 1995-07-13 | Porsche Ag | Cylinder head of an internal combustion engine |
| CZ282386B6 (en) * | 1990-09-13 | 1997-07-16 | ŠKODA AUTO a.s. | Four-valve cylinder head |
| JP2792314B2 (en) * | 1992-03-05 | 1998-09-03 | 三菱自動車工業株式会社 | Valve train for internal combustion engine |
| DE4426557A1 (en) * | 1994-07-27 | 1996-02-01 | Imre Dr Techn Szodfridt | Diagonally fitted valve system for engine |
| US5570665A (en) * | 1995-04-04 | 1996-11-05 | Chrysler Corporation | Valve train for internal combustion engine |
| DE19548088C1 (en) * | 1995-12-21 | 1997-07-17 | Daimler Benz Ag | Cylinder head for an internal combustion engine |
| DE19620546A1 (en) * | 1996-05-22 | 1997-11-27 | Audi Ag | Cylinder head for a multi-cylinder internal combustion engine |
-
1998
- 1998-01-17 DE DE19801606A patent/DE19801606A1/en not_active Withdrawn
-
1999
- 1999-01-14 EP EP99100592A patent/EP0930421B1/en not_active Expired - Lifetime
- 1999-01-14 DE DE59905376T patent/DE59905376D1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400724A (en) * | 2010-09-16 | 2012-04-04 | 本田技研工业株式会社 | Valve-mechanism-equipped engine |
| CN102400724B (en) * | 2010-09-16 | 2014-06-18 | 本田技研工业株式会社 | Valve-mechanism-equipped engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0930421A1 (en) | 1999-07-21 |
| DE59905376D1 (en) | 2003-06-12 |
| DE19801606A1 (en) | 1999-07-22 |
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