EP0974000B1 - Multicylinder internal combustion engine with two inlet valves and two outlet valves - Google Patents
Multicylinder internal combustion engine with two inlet valves and two outlet valves Download PDFInfo
- Publication number
- EP0974000B1 EP0974000B1 EP98921441A EP98921441A EP0974000B1 EP 0974000 B1 EP0974000 B1 EP 0974000B1 EP 98921441 A EP98921441 A EP 98921441A EP 98921441 A EP98921441 A EP 98921441A EP 0974000 B1 EP0974000 B1 EP 0974000B1
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- European Patent Office
- Prior art keywords
- intake
- exhaust
- internal combustion
- combustion engine
- valves
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- 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.)
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Classifications
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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
Definitions
- the invention relates to a multi-cylinder internal combustion engine with two Intake and two exhaust valves, the intake valves on the one hand and the exhaust valves, on the other hand, on opposite longitudinal sides of the engine are arranged, the inlet valves and exhaust valves through a camshaft via intake rocker arms or exhaust rocker arm can be actuated, both the intake rocker arm and the exhaust rocker arms are designed as fork rocker arms are, each with a rocker arm two valves of the same name actuated per cylinder, the axes of the intake rocker arms or the exhaust rocker arm offset from one another, lying on top of each other are arranged, and wherein the exhaust rocker arm of all cylinders one Row of cylinders are mounted on a continuous shaft.
- Such an internal combustion engine is known from DE 12 42 045.
- This internal combustion engine has intake rocker arms and exhaust rocker arms on, which each cylinder to a fork rocker arm and as Bridge rocker arm designed fork rocker arm summarized are.
- the bridge rocker arm acts through the connecting webs a considerable increase in the mass to be moved and a reduction in bending stiffness.
- EP 0 194 922 is a spark-ignition internal combustion engine with a central overhead camshaft, either over two bridge rocker arms or a combination with single rocker arms Valves are operated.
- the existing space in the rocker arm housing can be used optimally if - in Axis direction viewed - the axis of the exhaust rocker arm per cylinder is arranged obliquely above the axis of the intake rocker arm, so that the size of the cylinder head and the rocker arm housing is very compact.
- An arrangement is particularly space-saving of the axes of the intake rocker arms in the parting plane between Rocker arm housing and cylinder head are arranged.
- valve axles can all be parallel to each other, or even a pointed one Include angles. Because the exhaust rocker arm of all cylinders a row of cylinders mounted on a continuous shaft are, it is possible to control the timing of the exhaust valves Twisting the shaft to change. This allows for simple Way the realization of an engine brake. For this purpose, that the shaft is in the area of the bearing of an exhaust rocker arm has an eccentric bearing sleeve and with a rotating device at one end of the internal combustion engine in connection stands.
- the fork rocker arms When viewed in plan, the fork rocker arms preferably have one asymmetrical shape on, causing the push rods to operate the rocker arm can be relatively far apart.
- the free space between the push rods can be used for Cylinder head bolts and the fuel supply line are used.
- the intake and exhaust rocker arms are located on the side of the intake valves and the inlet channels as well as the outlet channels from the side Extend flange surfaces on the exhaust valve side.
- the intake manifold is located above the exhaust manifold, so that all gas exchange lines on one engine longitudinal side can be accommodated.
- the one on the opposite Longitudinal space left of the motor can be used for accommodation used by other units, for example the injection pump become.
- the invention is characterized in that the bearing of the shaft are formed by holes in the rocker arm housing.
- the Shafts of the inlet valves have a shorter length than that Shafts of the exhaust valves, preferably the valve springs Intake valves are shorter than the valve springs of the exhaust valves. Furthermore, it is advantageous if the stroke of the exhaust valves is greater than the stroke of the intake valves. Inlet and outlet rocker arms can be carried out with different lever ratios.
- FIG. 1 shows a cross section through the cylinder head and rocker arm housing the internal combustion engine according to the invention Section I-I in Fig. 2
- Fig. 2 is a plan view of the rocker arm housing
- Fig. 3 shows a section through the rocker arm housing according to the line III-III in Fig. 2
- Fig. 4 is a plan view of an intake rocker arm.
- a rocker arm housing screwed onto a cylinder head 1 2 is an intake rocker arm 4 and an exhaust rocker arm 5 per cylinder provided, the axes 4a and 5a - as can be seen in Fig. 1 - are arranged obliquely one above the other.
- the inlet rocker arms 4 are there rotatably supported individually on journal 6, which from the side of the cylinder head 1 screwed to the rocker arm housing 2 using screws 7 are.
- the axis 6a of the journal 6 lies in the parting plane 24 between cylinder head 1 and rocker arm housing 2.
- Die Exhaust rocker arms 5 are on one cylinder for all cylinders through shaft 8 mounted, the axis of which is designated 8a. Instead of a shaft 8, a continuous axis can also be provided his.
- the Shaft 8 on a rotating device 9, not shown one end face can be twisted.
- the storage of the exhaust rocker arm 5 takes place via slightly eccentric sleeves 10.
- the timing of the exhaust valves 11th influenced and thus an engine braking effect can be achieved.
- the Shafts 12b of the intake valves 12 have a lower height than that Shafts 11b of the exhaust valves 11.
- the valve springs for intake valves 12 and exhaust valves 11 can have different lengths.
- the axis 6a of the journal 6 of the intake rocker arm 4th and the axis 8a of the shaft 8 of the exhaust rocker arm 5 are on one One side through the crankshaft axis and the cylinder axes 13 spanned engine longitudinal plane 14 arranged.
- the intake manifold 19 is thus arranged above the exhaust manifold 20.
- the inlet channel consists of a part of the cylinder Rocker arm housing 2 formed main channel 30 (Fig. 3) and four not Sub-channels shown, each to an inlet valve Guide 12 of the two cylinders.
- the filling channels assume a common cross-sectional area a collecting space formed by the main channel 30.
- the Intake ducts 12 of two adjacent cylinders are each symmetrical to a normal plane on the crankshaft axis between the arranged two cylinders.
- the collection room and the main channel 30 are in the Partition plane 24 between the rocker arm housing 2 and the cylinder head 1. This enables the rocker arm housing 2 as a die-cast part manufacture.
- a main channel 30 of the intake system is between the bearings the bearing pin 6 passed. Branched as described above it is symmetrical in a total of four subchannels for supply two adjacent cylinders.
- the intake rocker arms 4 and the exhaust rocker arm 5 has an asymmetrical layout, so that between the push rods 21 and 22 for the intake rocker arm 4 and the exhaust rocker arm 5 in the area of the engine transverse plane 23 free space is formed, for example to accommodate a fuel supply line, not shown, can be used.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
Die Erfindung betrifft eine Mehrzylinder-Brennkraftmaschine mit zwei Einlass- und zwei Auslassventilen, wobei die Einlassventile einerseits und die Auslassventile andererseits auf gegenüberliegenden Brennkraftmaschinenlängsseiten angeordnet sind, wobei die Einlassventile und Auslassventile durch eine Nockenwelle über Einlasskipphebel bzw. Auslasskipphebel betätigbar sind, wobei sowohl die Einlasskipphebel als auch die Auslasskipphebel als Gabelkipphebel ausgeführt sind, wobei jeweils ein Gabelkipphebel zwei gleichnamige Ventile pro Zylinder betätigt, wobei die Achsen der Einlasskipphebel bzw. der Auslasskipphebel gegeneinander versetzt, übereinanderliegend angeordnet sind, und wobei die Auslasskipphebel aller Zylinder einer Zylinderreihe auf einer durchgehenden Welle gelagert sind.The invention relates to a multi-cylinder internal combustion engine with two Intake and two exhaust valves, the intake valves on the one hand and the exhaust valves, on the other hand, on opposite longitudinal sides of the engine are arranged, the inlet valves and exhaust valves through a camshaft via intake rocker arms or exhaust rocker arm can be actuated, both the intake rocker arm and the exhaust rocker arms are designed as fork rocker arms are, each with a rocker arm two valves of the same name actuated per cylinder, the axes of the intake rocker arms or the exhaust rocker arm offset from one another, lying on top of each other are arranged, and wherein the exhaust rocker arm of all cylinders one Row of cylinders are mounted on a continuous shaft.
Eine derartige Brennkraftmaschine ist aus der DE 12 42 045 bekannt. Diese Brennkraftmaschine weist Einlasskipphebel und Auslasskipphebel auf, die je Zylinder zu einem Gabelkipphebel und einem als Brückenkipphebel ausgeführten Gabelkipphebel zusammengefasst sind. Dabei bewirkt der Brückenkipphebel durch die Verbindungsstege eine beträchtliche Erhöhung der zu bewegenden Masse und eine Verringerung der Biegesteifigkeit.Such an internal combustion engine is known from DE 12 42 045. This internal combustion engine has intake rocker arms and exhaust rocker arms on, which each cylinder to a fork rocker arm and as Bridge rocker arm designed fork rocker arm summarized are. The bridge rocker arm acts through the connecting webs a considerable increase in the mass to be moved and a reduction in bending stiffness.
Eine ähnliche Ausbildung ist aus der EP 0 194 922 bekannt. Hierbei handelt es sich um eine fremdgezündete Brennkraftmaschine mit einer zentralen obenliegenden Nockenwelle, bei der entweder über zwei Brückenkipphebel oder eine Kombination mit Einzelkipphebel die Ventile betätigt werden.A similar design is known from EP 0 194 922. in this connection it is a spark-ignition internal combustion engine with a central overhead camshaft, either over two bridge rocker arms or a combination with single rocker arms Valves are operated.
Es ist die Aufgabe der Erfindung, diese Nachteile bei kompakter Baugröße des Zylinderkopfes und des Kipphebelgehäuses zu vermeiden.It is the object of the invention to overcome these disadvantages with a compact size of the cylinder head and the rocker arm housing.
Erfindungsgemäß wird dies dadurch erreicht, dass die Kipphebel in einem auf dem Zylinderkopf aufgesetzten Kipphebelgehäuse drehbar gelagert sind, wobei pro Einlasskipphebel ein Lagerzapfen vorgesehen ist, der vorzugsweise von der Seite des Zylinderkopfes am Kipphebelgehäuse lösbar befestigt ist. Der vorhandene Freiraum im Kipphebelgehäuse kann dabei optimal ausgenutzt werden, wenn - in Achsrichtung betrachtet - pro Zylinder die Achse des Auslasskipphebels schräg über der Achse des Einlasskipphebels angeordnet ist, so dass die Baugröße des Zylinderkopfes und des Kipphebelgehäuses sehr kompakt ist. Besonders raumsparend ist eine Anordnung, bei der die Achsen der Einlasskipphebel in der Trennebene zwischen Kipphebelgehäuse und Zylinderkopf angeordnet sind. Die Ventilachsen können alle zueinander parallel sein, oder auch einen spitzen Winkel einschließen. Dadurch, dass die Auslasskipphebel aller Zylinder einer Zylinderreihe auf einer durchgehenden Welle gelagert sind, ist es möglich, die Steuerzeiten der Auslassventile durch Verdrehen der Welle zu verändern. Dies ermöglicht auf einfache Weise die Realisierung einer Motorbremse. Dazu ist vorgesehen, dass die Welle jeweils im Bereich der Lagerung eines Auslasskipphebels eine exzentrische Lagerhülse aufweist und mit einer Verdreheinrichtung an einer Stirnseite der Brennkraftmaschine in Verbindung steht.According to the invention this is achieved in that the rocker arms in a rocker arm housing mounted on the cylinder head rotatable are supported, one bearing journal being provided for each rocker arm , which is preferably from the side of the cylinder head on the rocker arm housing is releasably attached. The existing space in the rocker arm housing can be used optimally if - in Axis direction viewed - the axis of the exhaust rocker arm per cylinder is arranged obliquely above the axis of the intake rocker arm, so that the size of the cylinder head and the rocker arm housing is very compact. An arrangement is particularly space-saving of the axes of the intake rocker arms in the parting plane between Rocker arm housing and cylinder head are arranged. The valve axles can all be parallel to each other, or even a pointed one Include angles. Because the exhaust rocker arm of all cylinders a row of cylinders mounted on a continuous shaft are, it is possible to control the timing of the exhaust valves Twisting the shaft to change. This allows for simple Way the realization of an engine brake. For this purpose, that the shaft is in the area of the bearing of an exhaust rocker arm has an eccentric bearing sleeve and with a rotating device at one end of the internal combustion engine in connection stands.
Bevorzugt weisen die Gabelkipphebel im Grundriss betrachtet eine asymmetrische Form auf, wodurch die Stößelstangen zur Betätigung der Kipphebel relativ weit voneinander distanziert werden können. Der frei werdende Platz zwischen den Stößelstangen kann dabei für Zylinderkopfschrauben und die Kraftstoffzuführleitung benutzt werden.When viewed in plan, the fork rocker arms preferably have one asymmetrical shape on, causing the push rods to operate the rocker arm can be relatively far apart. The free space between the push rods can be used for Cylinder head bolts and the fuel supply line are used.
In einer äußerst bevorzugten Ausführungsvariante der Erfindung ist vorgesehen, daß - bezogen auf die Motorlängsebene - die Achsen der Einlaß- und Austaßkipphebel auf der Seite der Einlaßventile angeordnet sind, und die Einlaßkanäle als auch die Auslaßkanäle vonseitlichen Flanschflächen auf der Seite der Auslaßventile ausgehen. Der Einlaßsammler ist dabei über dem Auslaßkrümmer angeordnet, so daß sämtliche Gaswechselleitungen auf einer Motorlängsseite untergebracht werden können. Der dadurch auf der gegenüberliegenden Motorlängsseite frei werdende Raum kann zur Unterbringung von anderen Aggregaten, beispielsweise der Einspritzpumpe, genutzt werden.In an extremely preferred embodiment variant of the invention provided that - based on the longitudinal engine plane - the axes the intake and exhaust rocker arms are located on the side of the intake valves and the inlet channels as well as the outlet channels from the side Extend flange surfaces on the exhaust valve side. The intake manifold is located above the exhaust manifold, so that all gas exchange lines on one engine longitudinal side can be accommodated. The one on the opposite Longitudinal space left of the motor can be used for accommodation used by other units, for example the injection pump become.
Eine herstellungsmäßig sehr einfache und platzsparende Ausführung der Erfindung zeichnet sich dadurch aus, daß die Lager der Welle durch Bohrungen im Kipphebelgehäuse gebildet sind.A very simple and space-saving design in terms of production The invention is characterized in that the bearing of the shaft are formed by holes in the rocker arm housing.
In weiterer Ausbildung der Erfindung kann vorgesehen sein, daß die Schäfte der Einlaßventile eine geringere Länge aufweisen als die Schäfte der Auslaßventile, wobei vorzugsweise die Ventilfedern der Einlaßventile kürzer sind als die Ventilfedern der Auslaßventile. Weiters ist es vorteilhaft, wenn der Hub der Auslaßventile größer ist als der Hub der Einlaßventile. Einlaß- und Auslaßkipphebeln können dabei mit unterschiedlichen Hebelübersetzungen ausgeführt sein.In a further embodiment of the invention it can be provided that the Shafts of the inlet valves have a shorter length than that Shafts of the exhaust valves, preferably the valve springs Intake valves are shorter than the valve springs of the exhaust valves. Furthermore, it is advantageous if the stroke of the exhaust valves is greater than the stroke of the intake valves. Inlet and outlet rocker arms can be carried out with different lever ratios.
Die Erfindung wird anhand der Figuren näher erläutert. The invention is explained in more detail with reference to the figures.
Es zeigen Fig. 1 einen Querschnitt durch Zylinderkopf und Kipphebelgehäuse der erfindungsgemäßen Brennkraftmaschine gemäß dem Schnitt I-I in Fig. 2, Fig. 2 eine Draufsicht auf das Kipphebelgehäuse, Fig. 3 einen Schnitt durch das Kipphebelgehäuse gemäß der Linie III-III in Fig. 2, und Fig. 4 eine Draufsicht auf einen Einlaßkipphebel.1 shows a cross section through the cylinder head and rocker arm housing the internal combustion engine according to the invention Section I-I in Fig. 2, Fig. 2 is a plan view of the rocker arm housing, Fig. 3 shows a section through the rocker arm housing according to the line III-III in Fig. 2, and Fig. 4 is a plan view of an intake rocker arm.
In einem auf einem Zylinderkopf 1 angeschraubten Kipphebelgehäuse
2 ist pro Zylinder ein Einlaßkipphebel 4 und ein Auslaßkipphebel 5
vorgesehen, deren Achsen 4a und 5a - wie in Fig. 1 ersichtlich ist -
schräg übereinander angeordnet sind. Die Einlaßkipphebel 4 sind dabei
drehbar einzeln auf Lagerzapfen 6 gelagert, welche von der Seite
des Zylinderkopfes 1 über Schrauben 7 am Kipphebelgehäuse 2 angeschraubt
sind. Die Achse 6a der Lagerzapfen 6 liegt in der Trennebene
24 zwischen Zylinderkopf 1 und Kipphebelgehäuse 2. Die
Auslaßkipphebel 5 sind auf einer für alle Zylinder einer Zylinderreihe
durchgehenden Welle 8 gelagert, deren Achse mit 8a bezeichnet ist.
Statt einer Welle 8 kann auch eine durchgehende Achse vorgesehen
sein.In a rocker arm housing screwed onto a
Bei den in den Figuren gezeigten Ausführungsvarianten kann die
Welle 8 über eine nicht näher dargestellte Verdreheinrichtung 9 an
einer Stirnseite verdreht werden. Die Lagerung der Auslaßkipphebel 5
erfolgt dabei über leicht exzentrische Hülsen 10. Durch Verdrehung
der exzentrischen Hülsen 10 kann die Steuerzeit der Auslaßventile 11
beeinflußt und damit eine Motorbremswirkung erreicht werden.In the embodiment variants shown in the figures, the
Zur optimalen Nutzung des zur Verfügung stehenden Raumes innerhalb
des Zylinderkopfes 1 und des Kipphebelgehäuses 2 weisen die
Schäfte 12b der Einlaßventile 12 eine geringere Höhe auf als die
Schäfte 11b der Auslaßventile 11. Auch die Ventilfedern für Einlaßventile
12 und Auslaßventile 11 können unterschiedliche Längen aufweisen.
Die Achse 6a des Lagerzapfens 6 des Einlaßkipphebels 4
und die Achse 8a der Welle 8 des Auslaßkipphebels 5 sind auf einer
Seite einer durch die Kurbelwellenachse und die Zylinderachsen 13
aufgespannten Motorlängsebene 14 angeordnet. Die Einlaßkanäle 15
und die Auslaßkanäle 16 gehen dagegen von Flanschflächen 17, 18
auf der gegenüberliegenden Seite der Motorlängsebene 14 aus, wobei
die Einlaßflanschfläche 17 durch das Kipphebelgehäuse 2 und die
Auslaßflanschfläche 18 durch den Zylinderkopf 1 gebildet werden.
Der Einlaßsammler 19 ist somit über dem Auslaßkrümmer 20 angeordnet.For optimal use of the available space within
of the
Zwischen den Betätigungseinrichtungen für die Einlaßventile 12 kann
ein Einlaßkanal durchgeführt werden. Für jeweils zwei benachbarte
Zylinder besteht der Einlaßkanal jeweils aus einem zum Teil vom
Kipphebelgehäuse 2 gebildeten Hauptkanal 30 (Fig. 3) und vier nicht
weiter dargestellten Teilkanälen, welche jeweils zu einem Einlaßventil
12 der beiden Zylinder führen. Pro Zylinder ist jeweils ein Teilkanal
als Drallkanal, und ein Teilkanal als Füllkanal ausgebildet.Between the actuators for the intake valves 12 can
an inlet duct can be performed. For two neighboring ones
The inlet channel consists of a part of the cylinder
Rocker
Die Füllkanäle gehen von einem gemeinsamen Querschnittsbereich
eines durch den Hauptkanal 30 gebildeten Sammelraumes aus. Die
Einlaßkanäle 12 zweier benachbarter Zylinder sind jeweils symmetrisch
zu einer Normalebene auf die Kurbelwellenachse zwischen den
beiden Zylindern angeordnet.The filling channels assume a common cross-sectional area
a collecting space formed by the
Der Sammelraum, sowie der Hauptkanal 30 befinden sich in der
Trennebene 24 zwischen dem Kipphebelgehäuse 2 und dem Zylinderkopf
1. Dies ermöglicht es, das Kipphebelgehäuse 2 als Druckgußteil
herzustellen.The collection room and the
Ein Hauptkanal 30 des Ansaugsystems ist zwischen den Lagerungen
der Lagerzapfen 6 hindurchgeführt. Wie oben beschrieben verzweigt
er sich in symmetrischer Art in insgesamt vier Teilkanälen zur Versorgung
zweier benachbarter Zylinder. A
Wie aus den Fig. 2 und 4 hervorgeht, weisen die Einlaßkipphebel 4
und die Auslaßkipphebel 5 eine asymmetrische Grundrißform auf, so
daß zwischen den Stößelstangen 21 und 22 für den Einlaßkipphebel
4 und den Auslaßkipphebel 5 im Bereich der Motorquerebene 23 ein
freier Raum gebildet wird, der beispielsweise zur Unterbringung einer
nicht dargestellten Kraftstoffzuführleitung genutzt werden kann.As is apparent from FIGS. 2 and 4, the
Claims (12)
- Multi-cylinder internal combustion engine with two intake and two exhaust valves (12, 11), the intake valves (12), on the one hand, and the exhaust valves (11), on the other hand, being arranged on opposite longitudinal sides of the internal combustion engine, the intake valves (12) and the exhaust valves (11) being actuable by a camshaft via intake rocker arms (4) and exhaust rocker arms (5), both the intake rocker arms (4) and the exhaust rocker arms (5) being embodied as forked rocker arms, in each case one forked rocker arm (4, 5) actuating two valves (12, 11) of the same kind per cylinder (13), the axes (4a, 5a) of the intake rocker arms (4) and the exhaust rocker arms (5), respectively, being offset relative to one another and arranged one above the other, and the exhaust rocker arms (11) of all the cylinders (3) of a bank of cylinders being mounted on a continuous shaft (8), characterized in that the rocker arms (4, 5) are mounted rotatably in a rocker arm housing (2) placed on the cylinder head (1), one bearing journal (6) being provided for each intake rocker arm (4).
- Internal combustion engine according to Claim 1, characterized in that the bearing journal (6) is secured releasably on the rocker arm housing from the side of the cylinder head (1).
- Internal combustion engine according to Claim 1 or 2, characterized in that the axes (5a) of the exhaust rocker arms (5) are at a greater distance from the cylinder-head sealing surface (25) than the axes (48) of the intake rocker arms (4).
- Internal combustion engine according to Claim 2 or 3, characterized in that the axes (4a) of the intake rocker arms (4) are arranged in the parting plane (24) between the rocker arm housing (2) and the cylinder head (1).
- Internal combustion engine according to one of Claims 1 to 4, characterized in that - viewed in the axial direction - the axis (11b) of the exhaust rocker arm (11) is arranged obliquely above the axis (12b) of the intake rocker arm (12) on each cylinder (3).
- Internal combustion engine according to one of Claims 1 to 5, characterized in that the exhaust rocker arms (11) of all the cylinders (3) of a bank of cylinders are mounted on a continuous bearing spindle.
- Internal combustion engine according to one of Claims 1 to 6, characterized in that the intake and exhaust rocker arms (4, 5) have an asymmetric shape in plan view.
- Internal combustion engine according to one of Claims 1 to 7, characterized in that - in relation to the longitudinal plane of the engine (14) - the axes (4a, 5a) of the intake and exhaust rocker arms (4, 5) are arranged on the side of the intake valves (12), and the intake ducts (15) and the exhaust ducts (16) start from lateral flange surfaces (17, 18) on the side of the exhaust valves (11).
- Internal combustion engine according to Claim 8, characterized in that the shaft (8) has an eccentric bearing sleeve (10) in the region of the mounting of each exhaust rocker arm (5) and is connected to a turning device (9) at one end of the internal combustion engine.
- Internal combustion engine according to one of Claims 5 to 9, characterized in that the bearings of the shaft (8) are formed by holes in the rocker arm housing (2).
- Internal combustion engine according to one of Claims 1 to 10, characterized in that the stems (12b) of the intake valves (12) are shorter than the stems (11b) of the exhaust valves (11), the valve springs of the intake valves (12) preferably being shorter than the valve springs of the exhaust valves (11).
- Internal combustion engine according to one of Claims 1 to 11, characterized in that the stroke of the exhaust valves (11) is longer than the stroke of the intake valves (12).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT60697 | 1997-04-09 | ||
| AT0060697A AT410242B (en) | 1997-04-09 | 1997-04-09 | MULTI-CYLINDER INTERNAL COMBUSTION ENGINE WITH TWO INLET AND TWO EXHAUST VALVES |
| PCT/EP1998/002034 WO1998045579A1 (en) | 1997-04-09 | 1998-04-08 | Multicylinder internal combustion engine with two inlet valves and two outlet valves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0974000A1 EP0974000A1 (en) | 2000-01-26 |
| EP0974000B1 true EP0974000B1 (en) | 2002-12-11 |
Family
ID=3495047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98921441A Expired - Lifetime EP0974000B1 (en) | 1997-04-09 | 1998-04-08 | Multicylinder internal combustion engine with two inlet valves and two outlet valves |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6205966B1 (en) |
| EP (1) | EP0974000B1 (en) |
| JP (1) | JP2000513068A (en) |
| CN (1) | CN1095027C (en) |
| AT (1) | AT410242B (en) |
| DE (1) | DE59806629D1 (en) |
| WO (1) | WO1998045579A1 (en) |
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| US6349688B1 (en) * | 2000-02-18 | 2002-02-26 | Briggs & Stratton Corporation | Direct lever overhead valve system |
| US20030098965A1 (en) * | 2001-11-29 | 2003-05-29 | Mike Binnard | System and method for supporting a device holder with separate components |
| US6505589B1 (en) * | 2002-02-01 | 2003-01-14 | General Motors Corporation | Single cam three-valve engine overhead valve train |
| US6895925B2 (en) * | 2002-09-18 | 2005-05-24 | Daimlerchrysler Corporation | Internal combustion engine having three valves per cylinder |
| JP2009243401A (en) * | 2008-03-31 | 2009-10-22 | Honda Motor Co Ltd | Cylinder head structure in four-cycle engine |
| US8220429B2 (en) * | 2009-07-23 | 2012-07-17 | Briggs & Stratton Corporation | Overhead valve and rocker arm configuration for a small engine |
| CN102337941A (en) * | 2011-09-27 | 2012-02-01 | 上海北星实业有限公司 | Valve actuating mechanism on engine |
| CN103423015A (en) * | 2012-05-15 | 2013-12-04 | 安徽华菱汽车有限公司 | Internal combustion engine and piston thereof |
| DE102013103553A1 (en) * | 2013-04-09 | 2014-10-09 | Fev Gmbh | Valve control for at least two globe valves |
| CN107939467B (en) * | 2017-12-28 | 2023-12-15 | 潍柴动力股份有限公司 | Valve air inlet and outlet rocker arm structure and diesel engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1301007A (en) * | 1917-02-20 | 1919-04-15 | Laurel Motors Corp | Control means for intakes and exhausts of internal-combustion engines. |
| DE340800C (en) * | 1918-04-08 | 1921-09-19 | Louis Renault | Rocker arm control for explosion engines with two inlet and outlet valves |
| US1528568A (en) * | 1921-10-03 | 1925-03-03 | Laurel Motors Corp | Valve construction for internal-combustion engines |
| US2650578A (en) * | 1949-02-12 | 1953-09-01 | Daub Rudolph | Air cooling for internal-combustion engines |
| AT188548B (en) * | 1954-06-25 | 1957-01-25 | Simmering Graz Pauker Ag | Valve control for internal combustion engines |
| DE1242045B (en) * | 1966-08-20 | 1967-06-08 | Daimler Benz Ag | Valve control for a piston internal combustion engine |
| DE1800774A1 (en) * | 1968-10-03 | 1970-06-25 | Maschf Augsburg Nuernberg Ag | Device on liquid-cooled cylinder covers of internal combustion engines |
| GB1279977A (en) | 1968-12-14 | 1972-06-28 | Vauxhall Motors Ltd | Internal combustion engine valve actuator mechanism |
| DE2025305A1 (en) * | 1970-05-23 | 1971-12-09 | Daimler-Benz Ag, 7000 Stuttgart | Valve control |
| DE2025304A1 (en) * | 1970-05-23 | 1971-12-09 | Daimler-Benz Ag, 7000 Stuttgart | Valve control for a high-speed four-stroke internal combustion engine with more than two valves per cylinder |
| US3967601A (en) * | 1974-09-07 | 1976-07-06 | Motoren- Und Turbinen-Union Friedrichshafen Gmbh | Valve control |
| FR2578907B1 (en) * | 1985-03-13 | 1989-06-16 | Peugeot | DEVICE FOR ACTUATING VALVES IN AN INTERNAL COMBUSTION ENGINE COMPRISING FOUR VALVES INCLINED IN V AND A CENTRAL SPARK PLUG BY CYLINDER |
| AT394249B (en) * | 1985-05-22 | 1992-02-25 | Avl Verbrennungskraft Messtech | INTERNAL COMBUSTION ENGINE |
| GB8605619D0 (en) * | 1986-03-07 | 1986-04-16 | Valentine B C | Poppet valve assemblies |
| JPH059444Y2 (en) * | 1986-07-11 | 1993-03-09 | ||
| US4741301A (en) * | 1986-11-28 | 1988-05-03 | General Motors Corporation | Engine valve train with inner and outer cam followers |
| US5070824A (en) * | 1988-05-30 | 1991-12-10 | Yamaha Hatsudoki Kabushiki Kaisha | Combustion chamber and valve operating mechanism for multi-valve engine |
| JP2623856B2 (en) * | 1989-09-05 | 1997-06-25 | 日産自動車株式会社 | Cylinder head of internal combustion engine |
| US5007387A (en) * | 1990-01-29 | 1991-04-16 | Masachika Arao | Four valve per cylinder engine head |
| US5101777A (en) | 1990-02-20 | 1992-04-07 | Yamaha Hatsudoki Kabushiki Kaisha | Automobile engine structure |
| US5375568A (en) * | 1994-07-06 | 1994-12-27 | Manolis; John | Multivalve internal combustion engine |
| US5570665A (en) * | 1995-04-04 | 1996-11-05 | Chrysler Corporation | Valve train for internal combustion engine |
| US5638783A (en) * | 1995-12-26 | 1997-06-17 | Chrysler Corporation | Valve train for an internal combustion engine |
| US5669344A (en) * | 1996-08-09 | 1997-09-23 | Chrysler Corporation | Sohc system with radial valves |
-
1997
- 1997-04-09 AT AT0060697A patent/AT410242B/en not_active IP Right Cessation
-
1998
- 1998-04-08 EP EP98921441A patent/EP0974000B1/en not_active Expired - Lifetime
- 1998-04-08 US US09/367,252 patent/US6205966B1/en not_active Expired - Fee Related
- 1998-04-08 JP JP10542392A patent/JP2000513068A/en active Pending
- 1998-04-08 DE DE59806629T patent/DE59806629D1/en not_active Expired - Lifetime
- 1998-04-08 WO PCT/EP1998/002034 patent/WO1998045579A1/en active IP Right Grant
- 1998-04-08 CN CN98801310A patent/CN1095027C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998045579A1 (en) | 1998-10-15 |
| ATA60697A (en) | 2002-07-15 |
| US6205966B1 (en) | 2001-03-27 |
| JP2000513068A (en) | 2000-10-03 |
| CN1239532A (en) | 1999-12-22 |
| AT410242B (en) | 2003-03-25 |
| CN1095027C (en) | 2002-11-27 |
| DE59806629D1 (en) | 2003-01-23 |
| EP0974000A1 (en) | 2000-01-26 |
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