EP0979929A2 - Piston engine with rocker arm valve drive - Google Patents

Piston engine with rocker arm valve drive Download PDF

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Publication number
EP0979929A2
EP0979929A2 EP98811260A EP98811260A EP0979929A2 EP 0979929 A2 EP0979929 A2 EP 0979929A2 EP 98811260 A EP98811260 A EP 98811260A EP 98811260 A EP98811260 A EP 98811260A EP 0979929 A2 EP0979929 A2 EP 0979929A2
Authority
EP
European Patent Office
Prior art keywords
rocker arm
camshaft
crankshaft
cylinder head
reciprocating engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98811260A
Other languages
German (de)
French (fr)
Other versions
EP0979929B1 (en
EP0979929A3 (en
Inventor
Urs Wenger
Hans-Rudolf Jenni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wenko AG Burgdorf
Original Assignee
Wenko AG Burgdorf
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from EP98115057A external-priority patent/EP0979928A1/en
Priority to EP98811260A priority Critical patent/EP0979929B1/en
Application filed by Wenko AG Burgdorf filed Critical Wenko AG Burgdorf
Priority to US09/762,784 priority patent/US6520133B1/en
Priority to BR9912940-0A priority patent/BR9912940A/en
Priority to PCT/EP1999/005714 priority patent/WO2000009864A1/en
Priority to JP2000565279A priority patent/JP2002522700A/en
Priority to AU55113/99A priority patent/AU5511399A/en
Publication of EP0979929A2 publication Critical patent/EP0979929A2/en
Publication of EP0979929A3 publication Critical patent/EP0979929A3/en
Priority to US10/339,721 priority patent/US20030098002A1/en
Priority to US10/339,722 priority patent/US6951196B2/en
Publication of EP0979929B1 publication Critical patent/EP0979929B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • 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
    • 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
    • F01L1/022—Chain drive
    • 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
    • F01L1/024—Belt drive
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • 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
    • F01L1/026—Gear drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/20—SOHC [Single overhead camshaft]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

Definitions

  • the present invention describes a reciprocating piston engine with rocker arm valve control according to the preamble of independent claims.
  • the invention for example closer to a 2-cylinder in-line engine explained, but applies to reciprocating engines with any Number of cylinders.
  • FIG. 1 schematically show four different valve controls, as described, for example, in the book Automotive paperback Bosch "VDI-Verlag, 19th edition, shows.
  • One possible embodiment is the rocker arm valve control shown in Fig. 1, Fig. 3.
  • This type of valve control is used today especially in engines with low friction
  • the main disadvantage of this type of construction is the greatly increased effort for machining and assembling the valve train, the complex maintenance, and the increased space requirement in the longitudinal direction of the cylinders.
  • FIGS 2 to 5 schematically show parts of the drive a reciprocating piston engine according to the invention, with piston 1, of which only one is shown, which is on the connecting rod 2 attached and via the crank pin 3 with the crankshaft 4th are connected.
  • a balance shaft 5 can also be seen with sprocket 5K, one directly with the crankshaft connected chain wheel 6, a chain tensioning wheel 7 to the chain 8 to be able to tension the camshaft sprocket 9 drives, which enables the rotation of the camshaft 10, which in turn actuates the rocker arm 11, which the move indicated valves 19 along the valve axis 12.
  • One in the embodiment as a so-called in-line engine has internal combustion engine shown in reciprocating piston design two parallel, not shown cylinders in which the pistons 1 run up and down.
  • the one below the cylinder arranged crankshaft 4 has two crank pins 3, each of which a connecting rod 2 is mounted.
  • Each of the connecting rods is connected to a piston 1 in the respective cylinder runs up and down.
  • the camshaft 10 is driven by a Camshaft sprocket 9, which is between the There are pairs of cams for the individual cylinders. in the Embodiment is this camshaft sprocket in the middle of the camshaft, but it can be in another version also offset from the center be arranged.
  • the camshaft 10 is through the timing chain 8 on the Camshaft sprocket 9, the chain tensioning wheel 7, the counter-rotating balance shaft 5 with Balance shaft sprocket 5K and the crankshaft sprocket 6 driven by the crankshaft 4.
  • a further possible execution of the camshaft drive includes a version with toothed belt and Toothed belt wheels instead of chain and chain wheels.
  • Figures 6 and 7 illustrate the installation of the camshaft 10 and the Rocker arm 11 directly into the cast on the cylinder head 24 Recordings 15 and 16. This has the advantage of a very simple editing and a very simple assembly of the Camshaft and the rocker arm.
  • Figures 6 and 7 show only cutouts from the cylinder head 24 and cylinder head cover 14, in which all the organs described are arranged.
  • the assembly is shown below using the example of the camshaft 10 explained in more detail and the advantages listed in detail.
  • the pre-cast Recordings 16 in the cylinder head 24 for the camshaft 10 the is a hollow shaft, only to the desired shaft size be drilled so that those with the inside Roller bearings 20 provided camshaft 10 between the Recordings 16 placed and a mounting shaft 17 inserted can be.
  • the cylinder head cover 14 with the corresponding machined side surfaces 21 serves the lateral Fixing the assembly shaft 17 for the camshaft 10.
  • rocker arm 11 are also designed as hollow shafts with roller bearings 22 and are placed between the receptacles 15 according to FIG. 7, whereupon the rocker arm assembly shafts 13 inserted and fixed by the side surfaces 23 on the cylinder head cover 14 become.
  • An advantage of the invention is therefore a very simple one Machining of the valve train and a very simple assembly the camshaft and the rocker arm.
  • Another advantage of Invention is the use of roller bearings for storage of camshaft and rocker arms, which makes them very low Friction losses are made possible and no pressure oil supply is needed.
  • Another great advantage of the invention is that none additional screw connection or other fastening of Bearing blocks is needed. Due to the special design of the cylinder head cover there are no bearings needed. In addition, there are no interrupted ones Sealing surfaces between the cylinder head cover and the cylinder head and it becomes a very simple seal on the candle hole enables. Due to the possibility of the cylinder head cover is not to be used to fix the assembly shafts further securing the camshaft and the rocker arm required. The invention also makes maintenance like Valve clearance control and setting are significantly simplified and camshafts and rocker arms can be extremely simple be replaced.
  • FIG. 8 shows a variant for the execution of the recordings, in particular the rocker arm shaft receptacles, the cylinder head shown in perspective is. It has been shown that certain models and heavy-duty castings for the Rocker arm shafts do not meet the requirements.
  • the cast receptacles 15 according to Figure 7 can in this Cases according to the embodiment of Figure 8 by recordings 15A steel to be replaced in pairs and on Cylinder head 24 are screwed directly. The remaining Advantages like the cast recordings are complete maintained and the assembly of the rocker arm shafts takes place on the same way.
  • the chain tensioning wheel 7 is in line with the Crankshaft sprocket 6 arranged so that both a sufficiently large wrap angle for all shafts than also a reversal of the direction of rotation for the balancer shaft 5 is achieved.
  • the chain tensioning wheel 7 can be used to reduce the Friction on roller bearings and only on the spray oil the chain be lubricated enough.
  • This measure of the invention also allows a very simple and compact construction of the valve train.
  • Invention with toothed belt possible.
  • the Sprockets replaced by toothed belt wheels.

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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)
  • Valve Device For Special Equipments (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The piston engine has camshaft and tappet receivers (15, 16) cast directly into the cylinder head (24). The assembly shafts (13, 17) are inserted directly in the camshaft or tappet receivers. Their bearings may be roller bearings or slip bearings. The receivers may be made in one piece with the cylinder had or may be made separately of steel and then screwed in.

Description

Die vorliegende Erfindung beschreibt einen Hubkolbenmotor mit Kipphebel-Ventilsteuerung gemäss Oberbegriff der unabhängigen Patentansprüche. Dabei wird die Erfindung beispielhaft an einem 2-Zylinder Reihenmotor näher erläutert, gilt jedoch für Hubkolbenmotoren mit beliebiger Zylinderanzahl.The present invention describes a reciprocating piston engine with rocker arm valve control according to the preamble of independent claims. The invention for example closer to a 2-cylinder in-line engine explained, but applies to reciprocating engines with any Number of cylinders.

Es ist vorbekannt, Motoren mit verschiedenen Arten von Ventilsteuerungen zu verwenden, z.B. gemäss Figur 1, die schematisch vier verschiedene Ventil-Steuerungen, wie sie beispielsweise im Buch

Figure 00010001
Kraftfahrtechnisches Taschenbuch Bosch" VDI-Verlag, 19. Auflage, beschrieben werden, zeigt. Eine mögliche Ausführung ist die in Fig. 1, Bild 3, dargestellte Kipphebel-Ventilsteuerung. Diese Art der Ventilsteuerung wird heute insbesondere bei Motoren verwendet, bei denen geringe Reibleistung und eine geringe Bauhöhe im Vordergrund stehen. Nachteilig an dieser Bauart ist der stark vergrösserte Aufwand für die Bearbeitung und Montage des Ventiltriebes, die aufwendige Wartung, sowie ein vergrösserter Platzbedarf in der Längsrichtung der Zylinder.It is previously known to use engines with different types of valve controls, for example according to FIG. 1, which schematically show four different valve controls, as described, for example, in the book
Figure 00010001
Automotive paperback Bosch "VDI-Verlag, 19th edition, shows. One possible embodiment is the rocker arm valve control shown in Fig. 1, Fig. 3. This type of valve control is used today especially in engines with low friction The main disadvantage of this type of construction is the greatly increased effort for machining and assembling the valve train, the complex maintenance, and the increased space requirement in the longitudinal direction of the cylinders.

Es ist von diesem bekannten Stand der Technik ausgehend Aufgabe der vorliegenden Erfindung, die Nachteile von vorbekannten Kipphebel-Ventilsteuerungen bezüglich stark vergrössertem Aufwand für Bearbeitung und Montage des Ventiltriebes, aufwendige Wartung und vergrösserten Platzbedarf in der Längsrichtung der Zylinder, zu beseitigen. Ein solcher Motor mit Kippventil-Steuerung ist in den unabhängigen Ansprüchen definiert. Weitere Vorteile und Ausführungen sind in den abhängigen Ansprüchen beschrieben. It is based on this known prior art Object of the present invention, the disadvantages of previously known rocker arm valve controls regarding strong increased effort for processing and assembly of the Valve train, complex maintenance and enlarged Space requirement in the longitudinal direction of the cylinders, too remove. Such a motor with tilt valve control is defined in the independent claims. Further advantages and designs are in the dependent Described claims.

Die Erfindung wird im folgenden anhand einer Zeichnung von Lösungen des Standes der Technik und anhand eines Ausführungsbeispiels mit einem 2-Zylinder Reihenmotor näher erläutert.

Fig. 1
zeigt schematisch vier Möglichkeiten von Ventilsteuerungen,
Fig. 2
zeigt schematisch in einer Seitenansicht einen Ventiltrieb eines Motors gemäss Erfindung,
Fig. 3
zeigt einen Schnitt gemäss Linie III-III in Fig. 2,
Fig. 4
zeigt die Kipphebelanordnung der Figuren 2 und 3 von oben,
Fig. 5
zeigt die Kurbelwelle und Ausgleichswelle von Fig. 2 von oben,
Fig. 6
zeigt schematisch einen ersten Schnitt durch das Zylinderkopfgehäuse gemäss Erfindung,
Fig. 7
zeigt einen weiteren Schnitt durch das Zylinderkopfgehäuse gemäss Erfindung, und
Fig. 8
zeigt in perspektivischer Sicht eine Variante zur Ausführung gemäss Figur 7.
The invention is explained in more detail below with reference to a drawing of solutions of the prior art and with the aid of an exemplary embodiment with a 2-cylinder in-line engine.
Fig. 1
shows schematically four possibilities of valve controls,
Fig. 2
shows schematically in a side view a valve train of an engine according to the invention,
Fig. 3
shows a section along line III-III in Fig. 2,
Fig. 4
shows the rocker arm arrangement of Figures 2 and 3 from above,
Fig. 5
shows the crankshaft and balance shaft of Fig. 2 from above,
Fig. 6
schematically shows a first section through the cylinder head housing according to the invention,
Fig. 7
shows a further section through the cylinder head housing according to the invention, and
Fig. 8
shows a perspective view of a variant of the embodiment according to FIG. 7.

Die Figuren 2 bis 5 zeigen schematisch Teile des Antriebs eines Hubkolbenmotors gemäss Erfindung, mit Kolben 1, wovon nur einer dargestellt ist, die an der Pleuelstange 2 befestigt und über die Kurbelzapfen 3 mit der Kurbelwelle 4 verbunden sind. Ausserdem erkennt man eine Ausgleichswelle 5 mit Kettenzahnrad 5K, ein direkt mit der Kurbelwelle verbundenes Kettenrad 6, ein Kettenspannrad 7, um die Kette 8 spannen zu können, die das Nockenwellen-Kettenzahnrad 9 antreibt, welches die Drehung der Nockenwelle 10 ermöglicht, die ihrerseits die Kipphebel 11 betätigt, die die angedeuteten Ventile 19 entlang der Ventilachse 12 bewegen.Figures 2 to 5 schematically show parts of the drive a reciprocating piston engine according to the invention, with piston 1, of which only one is shown, which is on the connecting rod 2 attached and via the crank pin 3 with the crankshaft 4th are connected. A balance shaft 5 can also be seen with sprocket 5K, one directly with the crankshaft connected chain wheel 6, a chain tensioning wheel 7 to the chain 8 to be able to tension the camshaft sprocket 9 drives, which enables the rotation of the camshaft 10, which in turn actuates the rocker arm 11, which the move indicated valves 19 along the valve axis 12.

Eine im Ausführungsbeispiel als sogenannter Reihenmotor dargestellte Brennkraftmaschine in Hubkolbenbauform besitzt zwei parallel stehende, nicht gezeigte Zylinder in welchen die Kolben 1 auf und ab laufen. Die unterhalb der Zylinder angeordnete Kurbelwelle 4 besitzt zwei Kurbelzapfen 3, auf denen jeweils ein Pleuel 2 gelagert ist. Jeder der Pleuel ist mit einem Kolben 1 verbunden, der im jeweiligen Zylinder auf und ab läuft. Oberhalb der Zylinder ist eine Nockenwelle 10 angeordnet. Die Nocken 18 der Nockenwelle 10 betätigen dabei die Kipphebel 11, die mit den jeweils entsprechenden Ventilen 19 zusammenwirken.One in the embodiment as a so-called in-line engine has internal combustion engine shown in reciprocating piston design two parallel, not shown cylinders in which the pistons 1 run up and down. The one below the cylinder arranged crankshaft 4 has two crank pins 3, each of which a connecting rod 2 is mounted. Each of the connecting rods is connected to a piston 1 in the respective cylinder runs up and down. There is a camshaft above the cylinders 10 arranged. Operate the cams 18 of the camshaft 10 thereby the rocker arm 11, which with the respective corresponding Valves 19 cooperate.

Der Antrieb der Nockenwelle 10 erfolgt durch ein Nockenwellen-Kettenzahnrad 9, das sich zwischen den Nockenpaaren für die einzelnen Zylinder befindet. Im Ausführungsbeispiel ist dieses Nockenwellen-Kettenzahnrad in der Mitte der Nockenwelle angeordnet, es kann jedoch in einer anderen Ausführung auch aus der Mitte versetzt angeordnet sein.The camshaft 10 is driven by a Camshaft sprocket 9, which is between the There are pairs of cams for the individual cylinders. in the Embodiment is this camshaft sprocket in the middle of the camshaft, but it can be in another version also offset from the center be arranged.

Die Nockenwelle 10 wird durch die Steuerkette 8 über das Nockenwellen-Kettenzahnrad 9, das Kettenspannrad 7, die gegenläufig rotierende Ausgleichswelle 5 mit Ausgleichswellen-Kettenzahnrad 5K und das Kurbelwellen-Kettenzahnrad 6 von der Kurbelwelle 4 angetrieben. Eine weitere mögliche Ausführung des Nockenwellenantriebes beinhaltet eine Ausführung mit Zahnriemen und Zahnriemenrädern anstelle von Kette und Kettenrädern.The camshaft 10 is through the timing chain 8 on the Camshaft sprocket 9, the chain tensioning wheel 7, the counter-rotating balance shaft 5 with Balance shaft sprocket 5K and the crankshaft sprocket 6 driven by the crankshaft 4. A further possible execution of the camshaft drive includes a version with toothed belt and Toothed belt wheels instead of chain and chain wheels.

Die in den Figuren 6 und 7 dargestellten Schnitte veranschaulichen den Einbau der Nockenwelle 10 und der Kipphebel 11 direkt in die am Zylinderkopf 24 angegossenen Aufnahmen 15 und 16. Dies hat den Vorteil einer sehr einfachen Bearbeitung und einer sehr einfachen Montage der Nockenwelle und der Kipphebel. Die Figuren 6 und 7 zeigen nur Ausschnitte aus dem Zylinderkopf 24 und Zylinderkopf-Deckel 14, in dem alle beschriebenen Organe angeordnet sind.The sections shown in Figures 6 and 7 illustrate the installation of the camshaft 10 and the Rocker arm 11 directly into the cast on the cylinder head 24 Recordings 15 and 16. This has the advantage of a very simple editing and a very simple assembly of the Camshaft and the rocker arm. Figures 6 and 7 show only cutouts from the cylinder head 24 and cylinder head cover 14, in which all the organs described are arranged.

Am Beispiel der Nockenwelle 10 wird nachfolgend die Montage näher erläutert und die Vorteile detailliert aufgeführt. Bei der vorliegenden Erfindung müssen die vorgegossenen Aufnahmen 16 im Zylinderkopf 24 für die Nockenwelle 10, die eine Hohlwelle ist, nur noch auf das gewünschte Wellenmass gebohrt werden, so dass die mit den innen liegenden Rollenlagern 20 versehene Nockenwelle 10 zwischen die Aufnahmen 16 gelegt und eine Montagewelle 17 eingeschoben werden kann. Der Zylinderkopfdeckel 14 mit den entsprechend bearbeiteten Seitenflächen 21 dient dabei der seitlichen Fixierung der Montagewelle 17 für die Nockenwelle 10.The assembly is shown below using the example of the camshaft 10 explained in more detail and the advantages listed in detail. At of the present invention must be the pre-cast Recordings 16 in the cylinder head 24 for the camshaft 10, the is a hollow shaft, only to the desired shaft size be drilled so that those with the inside Roller bearings 20 provided camshaft 10 between the Recordings 16 placed and a mounting shaft 17 inserted can be. The cylinder head cover 14 with the corresponding machined side surfaces 21 serves the lateral Fixing the assembly shaft 17 for the camshaft 10.

Sinngemäss trifft dies auch auf die Kipphebel 11 zu, die ebenfalls als Hohlwellen mit Rollenlager 22 ausgebildet sind und gemäss Figur 7 zwischen die Aufnahmen 15 gelegt werden, woraufhin die Kipphebel-Montagewellen 13 eingeschoben und durch die Seitenflächen 23 am Zylinderkopfdeckel 14 fixiert werden.Analogously, this also applies to the rocker arm 11, the are also designed as hollow shafts with roller bearings 22 and are placed between the receptacles 15 according to FIG. 7, whereupon the rocker arm assembly shafts 13 inserted and fixed by the side surfaces 23 on the cylinder head cover 14 become.

Ein Vorteil der Erfindung ist somit eine sehr einfache Bearbeitung des Ventiltriebs und eine sehr einfache Montage der Nockenwelle und der Kipphebel. Ein weiterer Vorteil der Erfindung ist die Verwendung von Rollenlagern zur Lagerung von Nockenwelle und Kipphebeln, wodurch sehr niedrige Reibverluste ermöglicht werden und keine Druckölversorgung benötigt wird.An advantage of the invention is therefore a very simple one Machining of the valve train and a very simple assembly the camshaft and the rocker arm. Another advantage of Invention is the use of roller bearings for storage of camshaft and rocker arms, which makes them very low Friction losses are made possible and no pressure oil supply is needed.

Ein weiterer grosser Vorteil der Erfindung ist, dass keine zusätzliche Verschraubung oder andersartige Befestigung von Lagerböcken benötigt wird. Durch die spezielle Ausführung des Zylinderkopfdeckels werden darin keine Lagerstellen benötigt. Ausserdem ergeben sich keine unterbrochenen Dichtflächen zwischen Zylinderkopfdeckel und Zylinderkopf und es wird eine sehr einfache Abdichtung des Kerzenlochs ermöglicht. Durch die Möglichkeit, den Zylinderkopfdeckel zur Fixierung der Montagewellen zu verwenden, ist keine weitere Sicherung der Nockenwelle und der Kipphebel erforderlich. Durch die Erfindung wird auch die Wartung wie Ventilspielkontrolle und Einstellung deutlich vereinfacht und Nockenwellen und Kipphebel können extrem einfach ausgetauscht werden.Another great advantage of the invention is that none additional screw connection or other fastening of Bearing blocks is needed. Due to the special design of the cylinder head cover there are no bearings needed. In addition, there are no interrupted ones Sealing surfaces between the cylinder head cover and the cylinder head and it becomes a very simple seal on the candle hole enables. Due to the possibility of the cylinder head cover is not to be used to fix the assembly shafts further securing the camshaft and the rocker arm required. The invention also makes maintenance like Valve clearance control and setting are significantly simplified and camshafts and rocker arms can be extremely simple be replaced.

In Figur 8 ist eine Variante zur Ausführung der Aufnahmen, insbesondere der Kipphebelwelle-Aufnahmen, dargestellt, wobei der Zylinderkopf in perspektivischer Sicht dargestellt ist. Es hat sich gezeigt, dass bei gewissen Modellen und grossen Beanspruchungen gegossene Aufnahmen für die Kipphebelwellen den Anforderungen nicht genügen. Die gegossenen Aufnahmen 15 gemäss Figur 7 können in diesen Fällen gemäss der Ausführung nach Figur 8 durch Aufnahmen 15A aus Stahl ersetzt werden, die paarweise und am Zylinderkopf 24 direkt angeschraubt werden. Die übrigen Vorteile wie bei den gegossenen Aufnahmen werden vollständig beibehalten und die Montage der Kipphebelwellen erfolgt auf dem gleichen Weg.8 shows a variant for the execution of the recordings, in particular the rocker arm shaft receptacles, the cylinder head shown in perspective is. It has been shown that certain models and heavy-duty castings for the Rocker arm shafts do not meet the requirements. The cast receptacles 15 according to Figure 7 can in this Cases according to the embodiment of Figure 8 by recordings 15A steel to be replaced in pairs and on Cylinder head 24 are screwed directly. The remaining Advantages like the cast recordings are complete maintained and the assembly of the rocker arm shafts takes place on the same way.

Falls erforderlich, können auch die gegossenen Nockenwellen-Aufnahmen 16 durch vorgefertigte Aufnahmen ersetzt werden, die dann auf den Zylinderkopf angeschraubt werden.If necessary, you can also use the cast camshaft mountings 16 to be replaced by pre-made recordings, which are then screwed onto the cylinder head.

Es hat sich ferner herausgestellt, dass die Verwendung von Aufnahmen, sei es gegossene oder vorgefertigte und angeschraubte Aufnahmen auch bei der Lagerung vorbekannter Nockenwellen oder Kipphebel wesentliche Vorteile und Einsparungen bringt. Analog dazu hat es sich ergeben, dass die Verwendung von Hohlwellen für die Lagerung von Nockenwellen und Kipphebel auch bei vorbekannten Anordnungen Vorteile bietet.It has also been found that the use of Recordings, be it cast or prefabricated and screwed recordings also in the storage of previously known Essential advantages and camshafts or rocker arms Brings savings. Similarly, it has been found that the use of hollow shafts for the storage of Camshafts and rocker arms also in known arrangements Offers advantages.

Insbesondere aus Figur 3 geht hervor, dass die Nockenwelle 10, das Kettenspannrad 7 und die gegenläufig rotierende Ausgleichswelle 5 mit dem Kettenzahnrad 5K von nur einer Kette 8 in Linie mit der Kurbelwelle 4 mit Kettenzahnrad 6 von dieser angetrieben wird. Das hat den Vorteil, durch die sehr kompakte Bauweise sehr schmal bauen zu können und ermöglicht, zusätzliche Bauteile wie z.B. Zwischenwellen einzusparen. Diese Kettenführung ermöglicht auch durch die Anordnung des Kettenspannrades 7 eine Drehrichtungsumkehr der Ausgleichswelle 5 und einen genügend grossen Umschlingungswinkel aller treibenden und getriebenen Bauteile. Dabei wird das Kettenspannrad 7 in Linie mit dem Kurbelwellen-Kettenzahnrad 6 so angeordnet, dass sowohl ein genügend grosser Umschlingungswinkel für alle Wellen, als auch eine Drehrichtungsumkehr für die Ausgleichswelle 5 erreicht wird. Das Kettenspannrad 7 kann zur Reduzierung der Reibung rollengelagert sein und dabei nur über das Spritzöl der Kette genügend geschmiert werden.It can be seen in particular from FIG. 3 that the camshaft 10, the chain tensioning wheel 7 and the counter-rotating Balance shaft 5 with the sprocket 5K of only one Chain 8 in line with crankshaft 4 with sprocket 6 is driven by this. That has the advantage of very compact design to be able to build very narrow and enables additional components such as Intermediate waves save. This chain guide also enables through the Arrangement of the chain tensioning wheel 7 reverses the direction of rotation the balance shaft 5 and a sufficiently large one Wrap angle of all driving and driven Components. The chain tensioning wheel 7 is in line with the Crankshaft sprocket 6 arranged so that both a sufficiently large wrap angle for all shafts than also a reversal of the direction of rotation for the balancer shaft 5 is achieved. The chain tensioning wheel 7 can be used to reduce the Friction on roller bearings and only on the spray oil the chain be lubricated enough.

Auch diese Massnahme der Erfindung ermöglicht einen sehr einfachen und kompakten Aufbau des Ventiltriebs. Neben einer Ausführung mit Kettentrieb, ist auch eine Ausführung der Erfindung mit Zahnriemen möglich. Dabei werden die Kettenräder durch Zahnriemenräder ersetzt.This measure of the invention also allows a very simple and compact construction of the valve train. In addition to one Version with chain drive is also a version of the Invention with toothed belt possible. The Sprockets replaced by toothed belt wheels.

Claims (13)

Hubkolbenmotor mit mindestens einem Zylinder und mit Kipphebel-Ventilsteuerung, mit Kolben (1), die an einer Pleuelstange (2) befestigt sind und über Kurbelzapfen (3) mit einer Kurbelwelle (4) verbunden sind, einer Ausgleichswelle (5) und einer von der Kurbelwelle (4) angetriebenen Nockenwelle (10), die ihrerseits Kipphebel (11) betätigt, wobei diese Organe in einem Kurbelwellen-Gehäuse mit Zylinderkopf (24) und Zylinderkopf-Deckel (14) angeordnet sind, dadurch gekennzeichnet, dass der Zylinderkopf direkt darin befestigte Aufnahmen (16) aufweist, die der Befestigung der Nockenwelle (10) dienen, ohne separat zu befestigende Lagerböcke zu benötigen.Reciprocating engine with at least one cylinder and with Rocker arm valve control, with piston (1) on one Connecting rod (2) are attached and via crank pin (3) connected to a crankshaft (4), one Balance shaft (5) and one of the crankshaft (4) driven camshaft (10), which in turn rocker arm (11) actuated, these organs in a crankshaft housing with cylinder head (24) and cylinder head cover (14) are arranged, characterized in that the Cylinder head mountings fastened directly in it (16) which are used to fasten the camshaft (10), without the need for separately mounted pedestals. Hubkolbenmotor mit mindestens einem Zylinder und mit Kipphebel-Ventilsteuerung, mit Kolben (1), die an einer Pleuelstange (2) befestigt sind und über Kurbelzapfen (3) mit einer Kurbelwelle (4) verbunden sind, einer Ausgleichswelle (5) und einer von der Kurbelwelle (4) angetriebenen Nockenwelle (10), die ihrerseits Kipphebel (11) betätigt, wobei diese Organe in einem Kurbelwellen-Gehäuse mit Zylinderkopf (24) und Zylinderkopf-Deckel (14) angeordnet sind, dadurch gekennzeichnet, dass der Zylinderkopf (24) direkt darin befestigte Aufnahmen (15) aufweist, die der Befestigung der Kipphebel (11) dienen, ohne separat zu befestigende Lagerböcke zu benötigen.Reciprocating engine with at least one cylinder and with Rocker arm valve control, with piston (1) on one Connecting rod (2) are attached and via crank pin (3) connected to a crankshaft (4), one Balance shaft (5) and one of the crankshaft (4) driven camshaft (10), which in turn rocker arm (11) actuated, these organs in a crankshaft housing with cylinder head (24) and cylinder head cover (14) are arranged, characterized in that the Cylinder head (24) receptacles (15) fastened directly in it which are used to fasten the rocker arms (11), without the need for separately mounted pedestals. Hubkolbenmotor mit mindestens einem Zylinder und mit Kipphebel-Ventilsteuerung, mit Kolben (1), die an einer Pleuelstange (2) befestigt sind und über Kurbelzapfen (3) mit einer Kurbelwelle (4) verbunden sind, einer Ausgleichswelle (5) und einer von der Kurbelwelle (4) angetriebenen Nockenwelle (10), die ihrerseits Kipphebel (11) betätigt, wobei diese Organe in einem Kurbelwellen-Gehäuse mit Zylinderkopf (24) und Zylinderkopf-Deckel (14) angeordnet sind, dadurch gekennzeichnet, dass die Nockenwelle (10) und/oder die Kipphebel (11) hohl ist (sind) und innen angeordnete Lager (20, 22) aufweist (aufweisen) und auf einer zusätzlichen, in die Nockenwelle (10), bzw. Kipphebel (11) eingeschobene(n) Montagewelle(n) (17, 13) gelagert ist (sind).Reciprocating engine with at least one cylinder and with Rocker arm valve control, with piston (1) on one Connecting rod (2) are attached and via crank pin (3) connected to a crankshaft (4), one Balance shaft (5) and one of the crankshaft (4) driven camshaft (10), which in turn rocker arm (11) actuated, these organs in a crankshaft housing with cylinder head (24) and cylinder head cover (14) are arranged, characterized in that the Camshaft (10) and / or the rocker arm (11) is (are) hollow and has internally arranged bearings (20, 22) and on an additional, in the camshaft (10), or Rocker arm (11) inserted mounting shaft (s) (17, 13) is (are) stored. Hubkolbenmotor nach Anspruch 1 und/oder 2 und 3, dadurch gekennzeichnet, dass die Montagewelle(n) (17, 13) in die Nockenwellen-, bzw. Kipphebel-Aufnahmen (16, 15) eingesetzt ist (sind).Reciprocating engine according to claim 1 and / or 2 and 3, characterized characterized in that the assembly shaft (s) (17, 13) in the Camshaft or rocker arm receptacles (16, 15) used is (are). Hubkolbenmotor nach Anspruch 3, dadurch gekennzeichnet, dass die Nockenwellen-, bzw. Kipphebel-Lager (20, 22) Rollen- oder Gleitlager sind.Reciprocating engine according to claim 3, characterized in that the camshaft or rocker arm bearings (20, 22) Roller or plain bearings are. Hubkolbenmotor nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Aufnahmen (15, 16) einstückig mit dem Zylinderkopf (24) gegossen sind.Reciprocating engine according to one of claims 1 to 5, characterized characterized in that the receptacles (15, 16) in one piece with the cylinder head (24) are cast. Hubkolbenmotor nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Aufnahmen (15A, 25; 16) aus Stahl vorgefertigt und am Zylinderkopf (24) angeschraubt sind.Reciprocating engine according to one of claims 1 to 5, characterized characterized in that the receptacles (15A, 25; 16) made of steel are prefabricated and screwed to the cylinder head (24). Hubkolbenmotor nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Zylinderkopf-Deckel (14) Seitenflächen (21) aufweist, die der Positionierung und Fixierung der Nockenwelle (10) und der dazu gehörigen Montagewelle (17) dienen. Reciprocating engine according to one of claims 1 to 7, characterized characterized that the cylinder head cover (14) Has side surfaces (21), the positioning and Fixing the camshaft (10) and the associated Serve assembly shaft (17). Hubkolbenmotor nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Zylinderkopf-Deckel (14) Seitenflächen (23) aufweist, die der Positionierung und Fixierung der Kipphebel (10) und der dazu gehörigen Montagewelle (13) dienen.Reciprocating engine according to one of claims 1 to 8, characterized characterized that the cylinder head cover (14) Has side surfaces (23), the positioning and Fixing the rocker arm (10) and the associated Serve assembly shaft (13). Hubkolbenmotor mit mindestens einem Zylinder und mit Kipphebel-Ventilsteuerung, mit Kolben (1), die an einer Pleuelstange (2) befestigt sind und über Kurbelzapfen (3) mit einer Kurbelwelle (4) verbunden sind, einer Ausgleichswelle (5) und einer von der Kurbelwelle (4) angetriebenen Nockenwelle (10), die ihrerseits Kipphebel (11) betätigt, wobei die Drehung der Nockenwelle (10) über bewegliche Antriebsmittel (8) erfolgt, die von einem direkt mit der Kurbelwelle verbundenen Antriebrad (6) angetrieben sind und ein Spannrad (7) umfassen, um die Antriebsmittel (8) zu spannen, dadurch gekennzeichnet, dass die Nockenwelle (10), das Spannrad (7) und die gegenläufig rotierende Ausgleichswelle (5) von nur einer Kette (8) oder nur einem Zahnriemen in Linie mit der Kurbelwelle (4) von dieser angetrieben werden.Reciprocating engine with at least one cylinder and with Rocker arm valve control, with piston (1) on one Connecting rod (2) are attached and via crank pin (3) connected to a crankshaft (4), one Balance shaft (5) and one of the crankshaft (4) driven camshaft (10), which in turn rocker arm (11) actuated, the rotation of the camshaft (10) over movable drive means (8) is carried out by a direct drive wheel (6) connected to the crankshaft and comprise a tensioning wheel (7) around the drive means (8) to tension, characterized in that the camshaft (10), the tensioning wheel (7) and the counter-rotating Balance shaft (5) from only one chain (8) or only one Timing belt in line with the crankshaft (4) of this are driven. Hubkolbenmotor nach einem der Ansprüche 1 bis 9 und 10.Reciprocating engine according to one of claims 1 to 9 and 10. Hubkolbenmotor nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass das in Linie mit dem Kurbelwellenrad (6) sich befindliche Spannrad (7) so angeordnet ist, dass sowohl ein genügend grosser Umschlingungswinkel für alle Wellen, als auch eine Drehrichtungsumkehr für die Ausgleichswelle (5) erreicht wird. Reciprocating engine according to claim 10 or 11, characterized characterized that in line with the crankshaft gear (6) located tension wheel (7) is arranged so that both a sufficiently large wrap angle for everyone Waves, as well as a reversal of the direction of rotation for the Balance shaft (5) is reached. Hubkolbenmotor nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das Spannrad (7) zur Reduzierung der Reibung rollengelagert ist und über das Spritzöl der Kette genügend geschmiert ist.Reciprocating engine according to one of claims 1 to 12, characterized in that the tensioning wheel (7) for Reduction of friction is on the roller and about that Spray oil on the chain is sufficiently lubricated.
EP98811260A 1998-08-11 1998-12-23 Piston engine with rocker arm valve drive Expired - Lifetime EP0979929B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP98811260A EP0979929B1 (en) 1998-08-11 1998-12-23 Piston engine with rocker arm valve drive
US09/762,784 US6520133B1 (en) 1998-08-11 1999-08-06 Reciprocating engine with rocker-arm valve control
BR9912940-0A BR9912940A (en) 1998-08-11 1999-08-06 Lifting piston motor with rocker valve control
PCT/EP1999/005714 WO2000009864A1 (en) 1998-08-11 1999-08-06 Reciprocating engine with rocker-arm valve control
JP2000565279A JP2002522700A (en) 1998-08-11 1999-08-06 Reciprocating engine with rocker valve device
AU55113/99A AU5511399A (en) 1998-08-11 1999-08-06 Reciprocating engine with rocker-arm valve control
US10/339,721 US20030098002A1 (en) 1998-08-11 2003-01-09 Reciprocating engine with rocker valve gear
US10/339,722 US6951196B2 (en) 1998-08-11 2003-01-09 Reciprocating engine with rocker valve gear

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP98115057 1998-08-11
EP98115057A EP0979928A1 (en) 1998-08-11 1998-08-11 Internal combustion engine with rocker operated valve drive
EP98811260A EP0979929B1 (en) 1998-08-11 1998-12-23 Piston engine with rocker arm valve drive

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EP0979929A2 true EP0979929A2 (en) 2000-02-16
EP0979929A3 EP0979929A3 (en) 2000-09-06
EP0979929B1 EP0979929B1 (en) 2004-12-15

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EP98811260A Expired - Lifetime EP0979929B1 (en) 1998-08-11 1998-12-23 Piston engine with rocker arm valve drive

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US (3) US6520133B1 (en)
EP (1) EP0979929B1 (en)
JP (1) JP2002522700A (en)
AU (1) AU5511399A (en)
BR (1) BR9912940A (en)
WO (1) WO2000009864A1 (en)

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US6951196B2 (en) 2005-10-04
AU5511399A (en) 2000-03-06
US20030098002A1 (en) 2003-05-29
WO2000009864A1 (en) 2000-02-24
EP0979929B1 (en) 2004-12-15
BR9912940A (en) 2001-05-08
EP0979929A3 (en) 2000-09-06
US6520133B1 (en) 2003-02-18
US20030098003A1 (en) 2003-05-29
JP2002522700A (en) 2002-07-23

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