DE600604C - Longitudinally split cylinder with exchangeable liner for air-cooled two-stroke internal combustion engines - Google Patents
Longitudinally split cylinder with exchangeable liner for air-cooled two-stroke internal combustion enginesInfo
- Publication number
- DE600604C DE600604C DEG84236D DEG0084236D DE600604C DE 600604 C DE600604 C DE 600604C DE G84236 D DEG84236 D DE G84236D DE G0084236 D DEG0084236 D DE G0084236D DE 600604 C DE600604 C DE 600604C
- Authority
- DE
- Germany
- Prior art keywords
- liner
- internal combustion
- cooled
- air
- combustion engines
- 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
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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/04—Cylinders; Cylinder heads having cooling means for air cooling
- F02F1/06—Shape or arrangement of cooling fins; Finned cylinders
- F02F1/08—Shape or arrangement of cooling fins; Finned cylinders running-liner and cooling-part of cylinder being different parts or of different material
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
Längsgeteilter Zylinder mit auswechselbarer Laufbüchse für luftgekühlte Zweitaktbrennkraftmaschinen Die Erfindung bezieht sich auf die an sich bekannte Bauart von Brennkraftmaschinen mit längsgeteiltem Zylinder und einer darin eingebauten Laufbüchse und betrifft eine besondere Art für die Befestigung der Laufbüchse. Für luftgekühlte Zweitaktmotoren, bei denen die Steuerschlitze in der Wandung der Laufbüchse .liegen, wird :einerseits eine sehr genaue Lagerung der Laufbüchse verlangt, da eine Verschiebung der Laufbüchse auch eine Verlagerung der Steuerschlitze und daher eine Veränderung der Steuerzeiten und des Steuerdiagramms zur Folge hat, durch die der Motor unwirtschaftlich .oder unbrauchbar werden kann. Andererseits wird aber für solche Kleinmotoren auch eine sehr leichte Auswechselbarkeit der Laufbüchse und vor allem eine Herstellung mit den geringst möglichen Kosten verlangt.Longitudinally split cylinder with exchangeable liner for air-cooled Two-stroke internal combustion engines The invention relates to the known per se Type of internal combustion engine with a longitudinally divided cylinder and one built into it Liner and concerns a special way of attaching the liner. For air-cooled two-stroke engines, in which the control slots in the wall of the liner . Lying, is: on the one hand, a very precise storage of the liner is required because a displacement of the liner also a displacement of the control slots and therefore results in a change in the timing and timing diagram, through which the engine can become uneconomical or unusable. On the other hand, however for such small motors also a very easy interchangeability of the liner and, above all, requires manufacturing at the lowest possible cost.
Die Laufbüchsenbefestigung nach der vorliegenden Erfmdung entspricht diesen Forderungen. Erfindungsgemäß ist die Laufbüchse durch die Bohrungen für die Befestigungsbolzen ergänzende Vertiefungen gesichert, in welche die Befestigungsbolzen der beiden Zylinderhälften eingreifen. Diese an sich im Lagerbau bekannte Bauart sichert die Laufbüchse zugleich gegen Verdrehung und gegen axiale Verschiebung und gestattet leine sehr einfache und billige Herstellung der Teile, da sie die bei auswechselbaren Laufbüchsen von Zweitaktbrennkraftmaschinen üblichen Passungen mittels Nut und Feder überflüssig macht.The liner attachment corresponds to the present invention these demands. According to the invention, the liner through the holes for Securing bolt complementary wells secured in which the fastening bolts of the two cylinder halves engage. This type of construction known per se in bearing construction secures the liner against rotation and against axial displacement and at the same time allows a very simple and cheap production of the parts, since they are the interchangeable liners of two-stroke internal combustion engines by means of customary fits Eliminates the need for tongue and groove.
Die Zeichnung zeigt ein Beispiel für die Ausführung der Erfindung, und zwar zeigt Abb. i einen Schnitt durch das Gehäuse einer Brennkraftmaschine, der in der Trennebene des Gehäuses ,geführt ist, und Abb. 2 einen Querschnitt nach Linie IV-IV der Abb. r. Das Kurbelgehäuse i . der Brennkraftmaschine besteht mit dem Zylindermantel -- aus einem Stück und ist in Richtung der Längsachse des Zylinders in zwei Hälften geteilt. Der Zylindermantel 2 ist oben mit Kühlrippen q. versehen und nach oben hin offen. Er umschließt eine Laufbüchse 6, die im oberen Teil außen mit zwei einander gegenüberliegenden Vertiefungen versehen ist, welche die Durchgangslöcher für die Bolzen 12 beim Zusammenbau der Teile ergänzen. Nach dem Zusammenbau sichern die beiden oberen Befestigungsbolzen 12 die Laufbüchse gegen Verlagerung nach beiden Hubrichtungen.The drawing shows an example of the embodiment of the invention, namely Fig. I shows a section through the housing of an internal combustion engine, which is guided in the parting plane of the housing, and Fig. 2 shows a cross section along line IV-IV of Fig. R . The crankcase i. the internal combustion engine is connected to the cylinder jacket - of one piece and is divided in the direction of the longitudinal axis of the cylinder into two halves. The cylinder jacket 2 is at the top with cooling fins q. provided and open at the top. It encloses a liner 6, which is provided on the outside in the upper part with two opposing depressions, which complement the through holes for the bolts 12 when the parts are assembled. After assembly, the two upper fastening bolts 12 secure the liner against displacement in both stroke directions.
Die Herstellung der Befestigungsmittel ist besonders einfach, da die beiden Zylinderhälften vor dem Bohren der B.olzenlöcher mit der Laufbüchse zusammengespannt werden können, so daß die erforderlichen Vertiefungen an der Laufbüchse beim Einsenken der Bohrer von selbst entstehen.The production of the fastening means is particularly simple because the clamp both cylinder halves together with the liner before drilling the B. bolt holes can be so that the necessary indentations on the liner when countersinking the drill will arise by itself.
Durch bloßes Herausnehmen der beiden oberen Befestigungsbolzen 12 kann die Laufbüchse aus dem Zylinder herausgezogen werden, ohne daß es einer Lösung der übrigen Befestigungsbolzen bedarf. Die Laufbüchse 6, in deren Boden io eine Zündkerze i i eingesetzt ist, kann glattwandig gezogen sein.By simply removing the two upper fastening bolts 12 the liner can be pulled out of the cylinder without there being any solution the remaining fastening bolts are required. The liner 6, in the bottom io one Spark plug i i is inserted, can be drawn smooth-walled.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG84236D DE600604C (en) | Longitudinally split cylinder with exchangeable liner for air-cooled two-stroke internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG84236D DE600604C (en) | Longitudinally split cylinder with exchangeable liner for air-cooled two-stroke internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE600604C true DE600604C (en) | 1934-11-15 |
Family
ID=7137954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEG84236D Expired DE600604C (en) | Longitudinally split cylinder with exchangeable liner for air-cooled two-stroke internal combustion engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE600604C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6032536U (en) * | 1983-08-11 | 1985-03-05 | 川崎重工業株式会社 | engine |
US4630345A (en) * | 1983-03-24 | 1986-12-23 | Sachs-Systemtechnik Gmbh | Method for manufacturing a cylinder unit for a cylinder piston combustion engine |
-
0
- DE DEG84236D patent/DE600604C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4630345A (en) * | 1983-03-24 | 1986-12-23 | Sachs-Systemtechnik Gmbh | Method for manufacturing a cylinder unit for a cylinder piston combustion engine |
JPS6032536U (en) * | 1983-08-11 | 1985-03-05 | 川崎重工業株式会社 | engine |
JPH0118812Y2 (en) * | 1983-08-11 | 1989-06-01 |
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