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DE318968C - Control for multi-cylinder internal combustion engines - Google Patents

Control for multi-cylinder internal combustion engines

Info

Publication number
DE318968C
DE318968C DENDAT318968D DE318968DD DE318968C DE 318968 C DE318968 C DE 318968C DE NDAT318968 D DENDAT318968 D DE NDAT318968D DE 318968D D DE318968D D DE 318968DD DE 318968 C DE318968 C DE 318968C
Authority
DE
Germany
Prior art keywords
valves
control
internal combustion
combustion engines
cylinder internal
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
Application number
DENDAT318968D
Other languages
German (de)
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.)
HUBERT THURN
Original Assignee
HUBERT THURN
Publication date
Application granted granted Critical
Publication of DE318968C publication Critical patent/DE318968C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462Valve return spring arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • F01L1/053Camshafts overhead type
    • F01L1/0532Camshafts overhead type the cams being directly in contact with the driven valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L2003/25Valve configurations in relation to engine
    • F01L2003/256Valve configurations in relation to engine configured other than perpendicular to camshaft axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/20SOHC [Single overhead camshaft]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

Steuerung für mehrzylindrige Verbrennungskraftmaschinen. Bei Verbrennungskraftmaschinen, insbesondere Flugzeug- und Automobilmotoren, steuert man die Einlaß- und Auslaßventile häufig von oben und bildet dabei das Zylinderende kugelförmig aus, um einen günstigen Kompressionsraum und einen großen Ventildurchmesser zu erzielen. Der Antrieb der hierbei schrägstehenden Ventilspindeln durch eine gemeinsame Steuerwelle erfolgte bei bekannten Ausführungsformen durch komplizierte Zwischenhebel, oder es mußten bei direktem Antrieb der Ventile eines Zylinders diese in seitlichen Kammern am Zylinder angeordnet werden, wodurch jedoch wieder die günstige Wirkungsweise eines allseitig abgeschlossenen Kompressionsraumes verlorengeht.Control for multi-cylinder internal combustion engines. In internal combustion engines, in particular aircraft and automobile engines, one controls the inlet and outlet valves often from above, making the end of the cylinder spherical in order to achieve a favorable To achieve compression space and a large valve diameter. The drive of the this inclined valve spindles took place through a common control shaft in known embodiments by complicated intermediate levers, or it had to with direct drive of the valves of a cylinder, these in lateral chambers on Cylinders are arranged, which, however, again the beneficial effect of a Compression space closed on all sides is lost.

Zur Vermeidung dieser Mängel werden erfindungsgemäß die Ventile zweier benachbarter Zylinder unmittelbar durch eine zwischen ihnen liegende schräge Nockenscheibe gesteuert, die _ auf der gemeinsamen Steuerwelle sitzt. Zweckmäßig haben die .von derselben Nockens cheibe angetriebenen Ventile benachbarter Zylinder die gleiche Funktion (z. B. Eimaß öder Auslaß), so daß es möglich ist, zwei Einlässe oder zwei Auslässe an eine gemeinsame Leitung anzuschließen. Außerdem ergibt sich hierdurch der weitere Vorteil, den ganzen Ventilmechanismus in einem sehr schmalen, ölgefüllten Gehäuse auf den Zylinderdeckeln unterbringen zu können, da sämtliche Steuerteile und die Ventile unmittelbar unter der allen Zylindern gemeinsamen Steuerwelle liegen. Die Figur zeigt in einem Längsschnitt ein Ausführungsbeispiel, und zwar sind nur drei Zylinder dargestellt (cl, c2, c3), deren schrägliegende Ventile v1 bis v6 unmittelbar unter der Steuerwelle w sitzen. Je zwei Ventile, z. B. v4 und v6, der benachbarten Zylinder c2, c3 werden durch eine gemeinsame doppelkegelstumpfförmige Nockenscheibe s2 gesteuert. Das gleiche erfolgt für die Ventile v2, v3 durch die auf der gemeinsamen Steuerwelle w sitzende Nockenscheibe s,.. Beim Viertakt hat jede Nockenscheibe zwei um etwa go° versetzte Nocken n1, ah, die sich auf etwa ein Viertel des Umfangs der . Scheibe erstrecken, wobei diese mit halber Drehzahl der Motorwelle umläuft. Am Ende sind einfach-kegelstumpfförmige Nockenscheiben s. Die von einer Nockenscheibe gesteuerten Ventile können das Einlaß- und Auslaßventil sein, zweckmäßiger jedoch läßt man jede Nockenscheibe zwei gleichartige Ventile betätigen, z. B. s, betätigt die Einlaßventile v2 und v3, und s2 die Auslaßventile v4 und v,; hierdurch ist es möglich, für je zwei Zylinder eine gemeinsame Einlaßleitung (e) . und Auslaßleitung anzuordnen. Letztere ist auf der anderen Seite der Zylinder. Die Steuerung läßt sich für Viertakt-und Zweitaktmaschinen verwenden, auch können die Ventile statt im Zylinderboden seitlich am Zylinder angeordnet sein, wobei die Steuerwelle dann ebenfalls seitlich sitzen muß.To avoid these deficiencies, the valves of the invention are two neighboring cylinders directly through an inclined cam disk between them controlled, which _ sits on the common control shaft. The .von the same cam disk driven valves of adjacent cylinders the same Function (e.g. size or outlet) so that it is possible to have two inlets or two Connect outlets to a common line. This also results in the further advantage of having the entire valve mechanism in a very narrow, oil-filled one To be able to accommodate the housing on the cylinder cover, as all control parts and the valves are located directly below the control shaft common to all cylinders. The figure shows an exemplary embodiment in a longitudinal section, namely only three cylinders shown (cl, c2, c3), their inclined valves v1 to v6 directly sit under the control shaft w. Two valves each, e.g. B. v4 and v6, the neighboring Cylinders c2, c3 are defined by a common double frustoconical cam disk s2 controlled. The same is done for the valves v2, v3 by those on the common Control shaft w seated cam disk s, .. In the four-stroke cycle, each cam disk has two cams n1, ah, offset by about go °, which cover about a quarter of the circumference of the . Extend the disc, which rotates at half the speed of the motor shaft. At the The ends are single-frustoconical cam disks see those of a cam disk controlled valves can be the inlet and outlet valve, but more expedient let each cam disk operate two similar valves, z. B. s, actuated the intake valves v2 and v3, and s2 the exhaust valves v4 and v1; this is how it is possible, a common inlet line (s) for every two cylinders. and outlet pipe to arrange. The latter is on the other side of the cylinder. The control leaves Can be used for four-stroke and two-stroke machines, too, the valves instead be arranged in the cylinder base on the side of the cylinder, the control shaft then must also sit to the side.

Claims (1)

PATENT-ANSPRUCH: Steuerung für mehrzylindrige Verbrennüngskraftmaschinen mit schrägstehenden Ventilen im > Zylinderboden .und darüber liegender Steuerwelle, dadurch gekennzeichnet, daß je zwei gegenüberliegende Ventile benachbarter Zylinder unmittelbar durch eine gemeinsame schräge Nockenscheibe gesteuert werden, wobei alle Ventile senkrecht unter der Steuerwelle liegen und die :von derselben Nockenscheibe angetriebenen Ventile zweckmäßig die gleiche Funktion haben.PATENT CLAIM: Control for multi-cylinder internal combustion engines with inclined valves in the> cylinder base and the control shaft above, characterized in that two opposing valves of adjacent cylinders can be controlled directly by a common inclined cam disc, wherein all valves are vertically below the control shaft and those: from the same cam disk driven valves expediently have the same function.
DENDAT318968D Control for multi-cylinder internal combustion engines Expired DE318968C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE318968T

Publications (1)

Publication Number Publication Date
DE318968C true DE318968C (en) 1920-02-21

Family

ID=6151355

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT318968D Expired DE318968C (en) Control for multi-cylinder internal combustion engines

Country Status (1)

Country Link
DE (1) DE318968C (en)

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