DE202007003411U1 - Valve gear for motor cycle internal combustion engine, has camshaft that is arranged above cylinder head, and driven by chain or belt, and cam follower, which lies above cylinder head, operates rocker arms - Google Patents
Valve gear for motor cycle internal combustion engine, has camshaft that is arranged above cylinder head, and driven by chain or belt, and cam follower, which lies above cylinder head, operates rocker arms Download PDFInfo
- Publication number
- DE202007003411U1 DE202007003411U1 DE202007003411U DE202007003411U DE202007003411U1 DE 202007003411 U1 DE202007003411 U1 DE 202007003411U1 DE 202007003411 U DE202007003411 U DE 202007003411U DE 202007003411 U DE202007003411 U DE 202007003411U DE 202007003411 U1 DE202007003411 U1 DE 202007003411U1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder head
- camshaft
- rocker arms
- type according
- above cylinder
- 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
Links
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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-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
- F01L1/022—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
- F01L1/20—Adjusting or compensating clearance
-
- 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
- F01L2001/0535—Single overhead camshafts [SOHC]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Diese Erfindung betrifft einen Ventiltrieb für Motorrad-Brennkraftmaschinen mit luftgekühlten Zylindern, Querstromzylinderköpfen und niedrigster Bauhöhe.These The invention relates to a valve train for motorcycle internal combustion engines with air-cooled Cylinders, cross-flow cylinder heads and lowest height.
Bei neuesten Brennkraftmaschinen werden i.a. die Ventile über Nockenwellen und Stösseltassen oder Schlepphebel, die direkt über den Ein- und Auslaßventilen angeordnet sind, betätigt. Man nennt diese Methode OHC (over head cam) Technik.at latest internal combustion engines i.a. the valves over camshafts and pestles or Drag levers that go directly over the intake and exhaust valves are arranged, actuated. This method is called OHC (over head cam) technique.
Da sich diese Mechanik bei Querstromzylinderköpfen aufgrund der Platzverhältnisse nicht verwirklichen lässt, werden für weniger hochleistungsorientierte Brennkraftmaschinen weiterhin lange Stösselstangenbetätigungen eingesetzt, die von in der Maschinenmitte angeordneten Nockenwellen angetrieben werden.There This mechanics in cross-flow cylinder heads due to space can not be realized, be for less high-performance engines continue to be long Pushrod operations used, that of arranged in the middle of the machine camshafts are driven.
Eine andere Lösung ist die Ventilbetätigung mit Wellenantrieben, die über Kegelräder die im Zylinderkopf positionierte Nockenwelle antreiben, bekannt als Königswellenantriebe.A another solution is the valve actuation with Shaft drives that over bevel gears driving the camshaft positioned in the cylinder head, known as a royal wave drives.
Diese
Ausführung
ist kostenaufwendig und die Kegelräder neigen zu erheblichen unerwünschten
mechanischen Geräuschen.
Um nun auch bei Querstromzylinderkopfeinsatz auf bewährte drehzahlfeste
kettengetriebene Nockenwellen nicht verzichten zu müssen, werden
bei modernen Brennkraftmaschinen, siehe
Diese Lösung schafft den erforderlichen Raum für die Durchströmung der Zylinderköpfe, bedingt jedoch, dass dadurch nur eine schräge Kipphebellage und entsprechend schräg ausgebildete Zylinder-, Zylinderkopfgehäuse, Lagerböcke und deren Befestigungen etc. möglich sind.These solution creates the necessary space for the flow through the Cylinder heads, conditionally, however, that thereby only an inclined Kipphebellage and accordingly aslant trained cylinder, cylinder head housings, bearing blocks and their attachments etc. possible are.
Dieser neue Ventiltrieb ist so konzipiert, dass aufgrund seiner Bauweise alle Teile einfach und solide gestaltet sind, für eine kostengünstige Herstellung, wie auch Montage und Wartung.This new valve train is designed that, due to its design all parts are simple and solid, for cost-effective production, as well as installation and maintenance.
Er funktioniert über Schlepphebel aktivierte kraftumlenkende Kipphebel. Die Nockenwelle ist über dem Zylinderkopf angeordnet und wird von einer Kette oder Riemen etc. angetrieben.He works over Drag lever activated kraftumlenkende rocker arm. The camshaft is over The cylinder head is arranged and used by a chain or belt etc. driven.
Diese Technik lässt sich flexibel für Zwei- und Mehrventiltechnik anwenden. Die Schlepp- und Kipphebel können sowohl als Einzelbaugruppe gestaltet werden, wie auch als einzelne Teile mit den Zugankern auf den Zylinderkopf gespannt werden. Es ist auch vorstellbar, dass die Teile in den Zylinderkopf integriert werden.These Technology leaves flexible for Use two- and multi-valve technology. The towing and rocker arms can be designed both as a single module, as well as individual Parts are stretched with the tie rods on the cylinder head. It It is also conceivable that the parts integrated into the cylinder head become.
Beim Einsatz dieser Brennkraftmaschinen an Motorrädern ohne Verkleidung machen sich mechanische Geräusche des Ventiltriebs, aufgrund der exponierten Zylinderköpfe, besonders bemerkbar. Zur Verminderung dieser Geräusche, auch bei zunehmendem Ventilspiel, legt ein Betätigungselement über den Schlepphebel den Kipphebel kontinuierlich gegen die Ventile an und stützt sich gegen den Kipphebel ab und drückt diesen axial gegen eine Seite. Auf diese Weise wird erreicht, dass zum einen bei Beginn jeder Hubbewegung das Ventilspiel zwischen Schlepphebel und Nocken platziert ist und so durch den sanften Hubanstieg des Nockens besonders die Hammergeräusche der einzelnen Teile gedämpft werden und zum anderen die Axialspielnachstellung der Kipphebel entfällt.At the Use of these internal combustion engines on motorcycles without fairing make mechanical noises the valve train, due to the exposed cylinder heads, especially noticeable. To reduce these noises, even with increasing Valve lash, puts an actuator over the Drag lever the rocker arm continuously against the valves and supports against the rocker arm and pushes it axially against a Page. In this way it is achieved that on the one hand at the beginning every lifting movement the valve clearance between cam follower and cam is placed and so by the gentle stroke increase of the cam especially the hammer sounds the individual parts are damped and on the other hand eliminates the axial play adjustment of the rocker arm.
Ausführungsbeispielembodiment
Nachfolgend
ist eine Ausführung
unter Bezugnahme auf die Zeichnungen
Von
einer Zwischenwelle, die von der Kurbelwelle angetrieben ist (beide
sind nicht dargestellt), wird über
die Kette
Damit
die Antriebskette
Beim
Einbau eines entsprechenden Betätigungselements
(nicht dargestellt) wirkt dieses kontinuierlich einerseits gegen
den Schlepphebel
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202007003411U DE202007003411U1 (en) | 2006-11-20 | 2007-03-07 | Valve gear for motor cycle internal combustion engine, has camshaft that is arranged above cylinder head, and driven by chain or belt, and cam follower, which lies above cylinder head, operates rocker arms |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202006017759.0 | 2006-11-20 | ||
DE200620017759 DE202006017759U1 (en) | 2006-11-22 | 2006-11-22 | Valve drive for motorised wheel-combustion engine with air-cooled cylinders |
DE202007003411U DE202007003411U1 (en) | 2006-11-20 | 2007-03-07 | Valve gear for motor cycle internal combustion engine, has camshaft that is arranged above cylinder head, and driven by chain or belt, and cam follower, which lies above cylinder head, operates rocker arms |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202007003411U1 true DE202007003411U1 (en) | 2007-05-10 |
Family
ID=38066466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202007003411U Expired - Lifetime DE202007003411U1 (en) | 2006-11-20 | 2007-03-07 | Valve gear for motor cycle internal combustion engine, has camshaft that is arranged above cylinder head, and driven by chain or belt, and cam follower, which lies above cylinder head, operates rocker arms |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202007003411U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007032638A1 (en) * | 2007-07-11 | 2009-01-15 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with a crankshaft and at least one cylinder head and motor vehicle with such an internal combustion engine |
-
2007
- 2007-03-07 DE DE202007003411U patent/DE202007003411U1/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007032638A1 (en) * | 2007-07-11 | 2009-01-15 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with a crankshaft and at least one cylinder head and motor vehicle with such an internal combustion engine |
US8307798B2 (en) | 2007-07-11 | 2012-11-13 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with a crankshaft and at least one cylinder head as well as a motor vehicle with such an internal combustion engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R086 | Non-binding declaration of licensing interest | ||
R207 | Utility model specification |
Effective date: 20070614 |
|
R156 | Lapse of ip right after 3 years |
Effective date: 20101001 |