DE2933796A1 - Two=stroke star or V=engine - has scavenging via crank case with crankshaft carried in bearings on crank webs - Google Patents

Two=stroke star or V=engine - has scavenging via crank case with crankshaft carried in bearings on crank webs

Info

Publication number
DE2933796A1
DE2933796A1 DE19792933796 DE2933796A DE2933796A1 DE 2933796 A1 DE2933796 A1 DE 2933796A1 DE 19792933796 DE19792933796 DE 19792933796 DE 2933796 A DE2933796 A DE 2933796A DE 2933796 A1 DE2933796 A1 DE 2933796A1
Authority
DE
Germany
Prior art keywords
crankshaft
machine according
sealing
engine
crankcase
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.)
Ceased
Application number
DE19792933796
Other languages
German (de)
Inventor
Dieter Koenig
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.)
KOENIG MOTORENBAU KG DIETER KO
Original Assignee
KOENIG MOTORENBAU KG DIETER KO
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
Application filed by KOENIG MOTORENBAU KG DIETER KO filed Critical KOENIG MOTORENBAU KG DIETER KO
Priority to DE19792933796 priority Critical patent/DE2933796A1/en
Publication of DE2933796A1 publication Critical patent/DE2933796A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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 
    • F02F1/002—Integrally formed cylinders and cylinder heads
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/20—Multi-cylinder engines with cylinders all in one line
    • 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
    • F02B75/00—Other engines
    • F02B75/34—Ultra-small engines, e.g. for driving models
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0051—Crankcase pump engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/02—Crankshaft bearings
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1812—Number of cylinders three

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The two-stroke combustion engine esp. a V-type or star-type engine has scavenging via the crank case (2). The crankshaft (3) is carried in bearings (10) on the crank webs (9). The crank case is divided into chambers (6a,b,c) by discs on the crankshaft which carry counterweights (7) and may form contact-less sealing areas (13) at their periphery in the crank case. The contours of the sealing areas may be straight or curved or may form a labyrinth seal. The thickness of the disc may be less than one quarter, pref. less than on fifth or one sixth of the distance between cylinder centres but of sufficient thickness to prevent flutter.

Description

"Zwei-Takt Verbrennungskraftmaschine" "Two-stroke internal combustion engine"

Die Erfindung bezieht sich auf eine Zwei-Takt Verbrennungskraftmaschine der im Oberbegriff des Anspruches 1 näher gekennzeichneten Art. Primär ist daran gedacht, diese Maschine im Flugzeugbereich einzusetzen und da wiederum insbesondere bei Motorseglern, die insbesondere im nicht angetriebenen Zustand die Form eines Hochleistungssegelflugzeuges haben.The invention relates to a two-stroke internal combustion engine of the type identified in more detail in the preamble of claim 1. Primary is it intended to use this machine in the aircraft sector and there again in particular for motor gliders, which take the form of a Have high performance glider.

Der Erfindung liegt die Aufgabe zugrunde, diese Motoren besonders günstig zu gestalten, d.h. insbesondere sie so auszulegen, daß sie möglichst klein und leicht sind, möglichst viel leisten, robust sind und einfach aufgebaut sind.The invention is based on the object, these motors in particular inexpensive to design, i.e. in particular to design them so that they are as small as possible and are light, perform as much as possible, are robust and have a simple structure.

Diese Aufgabe wird erfindungsgemäß gelöst wie im Kennzeichen des Anspruches 1 angegeben.This object is achieved according to the invention as in the characterizing part of the claim 1 specified.

Diese Maßnahme kommt der Dichtung zwischen den Dichtungsscheiben und den diesen gegenüberliegenden Dichtflächen des Kurbelgehäuses zugute: Der Abstand zwischen den Lagern ist so kurz wie möglich, und Verbiegungen der Kurbelwelle sind infolgedessen entsprechend klein. Anders ausgedrückt besteht also die Erfindung darin, die Lager so dicht wie möglich an die Abdichtscheiben heranzulegen.This measure comes from the seal between the sealing washers and the opposite sealing surfaces of the crankcase benefit: the distance between the bearings is as short as possible, and there are bends in the crankshaft consequently correspondingly small. In other words, the invention exists in placing the bearings as close as possible to the sealing washers.

Eine Weiterentwicklung der Erfindung besteht darin, daß die Dichtungsscheiben den Dichtungsflächen des Kurbelgehäuses ohne Zwischenschaltung von Dichtungselementen berührungslos gegenüberliegen. Diese Maßnahme ist eine Folge des kurzen Abstandes der Lager und hat ihrerseits zur Folge, daß keine Reibung zwischen Dichtungsscheiben und den diesen gegenUberliegenden Dichtflächen des Kurbelgehäuses auftritt und andererseits dennoch eine einwandfreie Dichtung erzielt wird.A further development of the invention is that the sealing washers the sealing surfaces of the crankcase without the interposition of sealing elements face each other without contact. This measure is a consequence of the short distance the bearing and in turn has the consequence that no friction between sealing washers and the opposite sealing surfaces of the crankcase occurs and on the other hand yet a perfect seal is achieved.

Die Bereiche zwischen den Dichtungsscheiben und den diesen gegenüberliegenden Dichtungsflächen des Kurbelgehäuses können verschieden geformt sein. Je nachdem kann das Kurbelgehäuse ungeteilt sein oder muß teilbar sein, damit man die Kurbelwelle hinein bekommt.The areas between the sealing washers and those opposite them Sealing surfaces of the crankcase can be shaped differently. Depending on the crankcase can be undivided or must be divisible so that the crankshaft can be gets into it.

Ferner wird vorgeschlagen, daß ein Teil der Gegengewichte oder alle Gegengewichte der Kurbelwelle an den Dichtungsscheiben befestigt sind. Auf diese Weise wird Verbiegungen der Kurbelwelle weiter entgegengewirkt.It is also proposed that some or all of the counterweights Counterweights of the crankshaft are attached to the sealing washers. To this In this way, bending of the crankshaft is further counteracted.

Weitere Einzelheiten der Erfindung ergeben sich aus der Zeichnung. Darin zeigen: Fig. 1 einen Schnitt durch einen Drei-Zylinder-Sternzotor und Fig. 2 eine Ansicht der Kurbelwelle dieses Motors.Further details of the invention emerge from the drawing. These show: FIG. 1 a section through a three-cylinder star engine and FIG. Figure 2 is a view of the crankshaft of this engine.

Mit 1 ist ein Zylinder, mit 2 ein Kurbelgehäuse, mit 3 eine Kurbelwelle, mit 4 ein Kolben, mit 5 eine tolbenpleuelstange, mit 6a, 6b und 6c drei Kurbelgehäusekamiern, mit 7 Gegengewichte, mit 8 Dichtungsscheiben, die auf der Kurbelwelle 3 sitzen, die Gegengewichte 7 tragen und teilweises die Trennwände zwischen den Kurbe Igehäusekammern 6a, 6b und 6c sind, mit 9 Kurbelwangen, die zur Lagerung der Kurbelwelle 3 dienen und auf denen z.B. Wälzkörper 10 laufen, mit 11 eine Drosselklappe und mit 12 ein Drehschieber bezeichnet. Auf die Dichtbereiche, auf die es erfindungagemäß ankommt, weisen Pfeile 13. Die Pfeile 14 veranschaulichen die Gasftlhrung.1 is a cylinder, 2 is a crankcase, 3 is a crankshaft, with 4 a piston, with 5 a piston rod, with 6a, 6b and 6c three crankcase chambers, with 7 counterweights, with 8 sealing washers that sit on the crankshaft 3, carry the counterweights 7 and partly the partition walls between the crankcase chambers 6a, 6b and 6c are, with 9 crank webs, which are used to support the crankshaft 3 and on which, for example, rolling elements 10 run, with 11 a throttle valve and with 12 a Called rotary valve. On the sealing areas that are important according to the invention, point arrows 13. The arrows 14 illustrate the gas supply.

Durch das radiale Ausströmen des Luft-Gas-Gemisches aus dem Drehschieber 12 entsteht ein Ladeeffekt.Due to the radial outflow of the air-gas mixture from the rotary valve 12 creates a charging effect.

Claims (8)

Ansprüche: : Zwei-Takt Verbrennungskraftmaschine, insbesondere V- oder Sternmotor mit Kurbelgehäuse-Spülung, dadurch g e k e n n -z e i c h n e t , daß deren Kurbelwelle (3) auf den Kurbelwangen (9) gelagert ist. Claims:: Two-stroke internal combustion engine, especially V- or radial engine with crankcase scavenging, which means that it is not marked that the crankshaft (3) is mounted on the crank webs (9). 2. Maschine nach Anspruch 1, dadurch g e k e n n z e i c h -n e t , daß die Dichtungsscheiben (8) den Dichtungsflächen des Kurbelgehäuses (2) ohne Zwischenschaltung von Dichtungselementen bertihrungslos gegenüberliegen. 2. Machine according to claim 1, characterized in that g e k e n n z e i c h -n e t that the sealing washers (8) the sealing surfaces of the crankcase (2) without Interposition of sealing elements opposite one another without any connection. 3. Maschine nach Anspruch 1 oder 2, dadurch g e k e n n -z e i c h n e t , daß die Bereiche zwischen den Dichtungsscheiben (8) und den diesen gegenüberliegenden Kurbelgehäuse-Dichtwänden gerade, gebogen oder labyrinthartig z.B. gezackt,ausgebildet sind.3. Machine according to claim 1 or 2, characterized in that g e k e n n -z e i c h n e t that the areas between the sealing washers (8) and those opposite them Crankcase sealing walls are straight, curved or labyrinthine, e.g. serrated are. 4. Maschine nach einem oder mehreren der Ansprüche 1 - 3, dadurch g e k e n n z e i c h n e t , daß die Gegengewichte (7) der Kurbelwelle (3) oder ein Teil davon an den Dichtungsscheiben (8) befestigt sind.4. Machine according to one or more of claims 1-3, characterized it is noted that the counterweights (7) of the crankshaft (3) or some of them are attached to the sealing washers (8). 5. Maschine nach Anspruch 4, dadurch g e k e n n z e i c h -n e t , daß die Gegengewichte (7) kreissegmentförmige Körper sind.5. Machine according to claim 4, characterized in that g e k e n n z e i c h -n e t that the counterweights (7) are circular segment-shaped bodies. 6. Maschine nach einem oder mehreren der Ansprüche 1 - 5, dadurch g e k e n n z e i c h n e t , daß die Dicke der Dichtungsscheiben (8) kleiner als 1/4, insbesondere kleiner als 1/5, insbesondere kleiner als 1/6 des Zylinderabstandes, aber mindestens so groß ist, daß sie nicht flattern.6. Machine according to one or more of claims 1-5, characterized it is noted that the thickness of the sealing washers (8) is less than 1/4, especially smaller than 1/5, especially smaller than 1/6 of the cylinder distance, but at least large enough that they do not flutter. 7. Maschine nach einem oder mehreren der Ansprüche 1 - 6, dadurch g e k e n n z e i c h n e t , daß die Dichtungsscheiben (8) so dick oder annähernd so dick wie die angrenzenden Wandteile des Kurbelgehäuses (2) sind.7. Machine according to one or more of claims 1-6, characterized it is not noted that the sealing washers (8) are as thick or approximately as thick as the adjacent wall parts of the crankcase (2). 8. Sternmotor oder V-Motor insbesonden nach einem oder mehreren der Ansprüche 1 - 7, dadurch g e k e n n z e i c h -n e t , daß ein Vergaser oder Lufteinlaßkanal insbesondere im axialen Bereich der Kurbelwelle (3) und ein Drehschieber (12) auf der Kurbelwelle (3) vorgesehen sind, der das Gas-Luft-Gemisch der Reihe nach zu den Zylindern (1) durchläßt und einen axial orientierten Zustrom und einen radial orientierten Abstrom hat.8. radial engine or V-engine in particular according to one or more of the Claims 1 - 7, characterized in that a carburetor or air inlet duct in particular in the axial area of the crankshaft (3) and a rotary valve (12) the crankshaft (3) are provided, which sequentially increases the gas-air mixture the cylinders (1) and one axially oriented inflow and one radially has oriented downflow.
DE19792933796 1979-08-17 1979-08-17 Two=stroke star or V=engine - has scavenging via crank case with crankshaft carried in bearings on crank webs Ceased DE2933796A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792933796 DE2933796A1 (en) 1979-08-17 1979-08-17 Two=stroke star or V=engine - has scavenging via crank case with crankshaft carried in bearings on crank webs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792933796 DE2933796A1 (en) 1979-08-17 1979-08-17 Two=stroke star or V=engine - has scavenging via crank case with crankshaft carried in bearings on crank webs

Publications (1)

Publication Number Publication Date
DE2933796A1 true DE2933796A1 (en) 1981-02-26

Family

ID=6078938

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792933796 Ceased DE2933796A1 (en) 1979-08-17 1979-08-17 Two=stroke star or V=engine - has scavenging via crank case with crankshaft carried in bearings on crank webs

Country Status (1)

Country Link
DE (1) DE2933796A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059872A1 (en) * 1981-03-06 1982-09-15 Helmut Bernhardt GmbH u. Co. KG Feinmechanik Engine for driving models
WO1999034107A1 (en) * 1997-12-30 1999-07-08 Ab Volvo Internal combustion engine
JP2008509312A (en) * 2004-08-06 2008-03-27 チーム オリオン ヨーロッパ エス．エー． High-power 2-stroke engine especially for use in making models

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059872A1 (en) * 1981-03-06 1982-09-15 Helmut Bernhardt GmbH u. Co. KG Feinmechanik Engine for driving models
WO1999034107A1 (en) * 1997-12-30 1999-07-08 Ab Volvo Internal combustion engine
JP2008509312A (en) * 2004-08-06 2008-03-27 チーム オリオン ヨーロッパ エス．エー． High-power 2-stroke engine especially for use in making models
EP1787018B1 (en) * 2004-08-06 2010-06-30 Team Orion Europe SA High-output two-stroke engine in particular for application in model assembly

Similar Documents

Publication Publication Date Title
EP1771642B1 (en) Valve gear pertaining to an internal combustion engine
DE69725864T2 (en) INTERNAL COMBUSTION ENGINE WITH CENTRAL COMBUSTION CHAMBER
DE68914852T2 (en) INTERNAL COMBUSTION ENGINE WITH TUBULAR ROTARY.
DE2933796A1 (en) Two=stroke star or V=engine - has scavenging via crank case with crankshaft carried in bearings on crank webs
DE1526462A1 (en) engine
DE3627018A1 (en) Internal combustion engine with multiple crankshaft
DE2633756A1 (en) REVOLVING ENGINE
DE3504639A1 (en) HYDRAULIC CONTROL FOR VALVES OF INTERNAL COMBUSTION ENGINES
DE202022000471U1 (en) rotary engine
DE2732779A1 (en) Rotary cylinder piston engine - has radial cylinders in cylindrical block rotating inside casing and ring seals around cylinder tops
DE69501737T2 (en) AIR VALVE ASSEMBLY IN CONNECTION WITH A DISTRIBUTION CHAMBER
DE2707163A1 (en) Swashplate-type IC engine - has ported disc valves mounted on stub spindles in cylinder cover plate and driven from timing head
DE3727670A1 (en) Housing block for reciprocating piston internal combustion engine
DE3923906A1 (en) INTERNAL COMBUSTION ENGINE
DE3419582A1 (en) Swash plate engine
DE4042425A1 (en) Crank-drive mechanism for engine - has drillings in crankpins and slides supplying lubricating oil to working surfaces
DE3004608A1 (en) Rotary valve four stroke IC engine - has roller slide in roller slide cylinder with cross bores
DE2724474A1 (en) Rotary and reciprocating IC engine - has rotary power piston driving rotary compressor stage
DE3800005A1 (en) Basic concept of an axial engine
DE718646C (en) Two-stroke composite internal combustion engine
CH667131A5 (en) DEVICE FOR DRIVING AN OUTPUT SHAFT.
EP3268624A1 (en) Crank shaft for an inline internal combustion engine and an inline internal combustion engine
DE102022000663A1 (en) rotary engine
DE579953C (en) Two-stroke internal combustion engine in star shape with graduated pistons and fuel mixture pre-compression
DE19547625A1 (en) Radial piston engine or machine

Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
8131 Rejection