DE309046C - - Google Patents
Info
- Publication number
- DE309046C DE309046C DENDAT309046D DE309046DA DE309046C DE 309046 C DE309046 C DE 309046C DE NDAT309046 D DENDAT309046 D DE NDAT309046D DE 309046D A DE309046D A DE 309046DA DE 309046 C DE309046 C DE 309046C
- Authority
- DE
- Germany
- Prior art keywords
- working cylinder
- shrink
- jacket
- rings
- supporting ribs
- 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.)
- Active
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
- F02F1/18—Other cylinders
- F02F1/186—Other cylinders for use in engines with two or more pistons reciprocating within same cylinder
-
- 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
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
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
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Bei Arbeitszylindern von Verbrennungskraftmaschinen sind Schrumpfmäntel bekannt, die zugleich zur Kühlung dienen und Stützrippen aufweisen, welche sich gegen den Arbeitszylinder legen und den Schrumpfdruck auf letzteren übertragen. Solche Scbrumpfmäntel neigen zu Rißbildungen, insbesondere an den Aussparungen für die Ventile.In the case of working cylinders of internal combustion engines, shrink jackets are known which at the same time serve for cooling and have support ribs, which are against the working cylinder and transfer the shrinkage pressure to the latter. Such shrink coats tend to be to the formation of cracks, especially in the recesses for the valves.
Die Erfindung hat den Zweck, die BildungThe purpose of the invention is education
ίο von Rissen bei Anwendung solcher Schrumpfmäntel zu verhindern, und besteht darin, daß die den Schrumpfdruck auf den Arbeitszylinder übertragenden Stützrippen aus mehrteiligen, selbständigen Ringen bestehen, die neutrale Zwischenstücke zwischen Arbeitszylinder und Schrumpfmantel bilden, so daß sich diese ohne gegenseitige Beeinflussung auch in ihrer Längsrichtung ausdehnen können und insbesondere übermäßige Materialanhäufungen vermieden sind, die bei Wärmeschwankungen zu übermäßiger Materialbeanspruchung und daher zu Rissen führen.ίο of cracks when using such shrink sleeves to prevent, and consists in the fact that the shrinkage pressure on the working cylinder The transferring support ribs consist of multi-part, independent rings, the neutral one Form intermediate pieces between the working cylinder and the shrink jacket, so that these can also expand in their longitudinal direction without mutual interference, and in particular excessive accumulations of material are avoided, which in the event of fluctuations in temperature lead to excessive material stress and therefore lead to cracks.
Der verringerten Beanspruchung wegen kann der Arbeitszylinder auch geringere Wandstärke haben und daher wegen des rascheren Wärmedurchgangs wirksamer gekühlt werden. Außerdem läßt sich die Kühlfläche des Arbeitszylinders noch dadurch vergrößern, daß die Stützringe am inneren Umfange Kerben erhalten, deren Lichtraum einen entsprechenden Teil der Wandung des Arbeitszylinders frei läßt, der somit vom Kühlmittel bespült werden kann.Because of the reduced stress, the working cylinder can also have a smaller wall thickness and are therefore cooled more effectively because of the faster heat transfer. aside from that the cooling surface of the working cylinder can be increased by the fact that the support rings received notches on the inner circumference, the clearance of which leaves a corresponding part of the wall of the working cylinder free, which can thus be flushed with the coolant.
Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, und zwar zeigen Fig. ι den Längenschnitt,In the drawing, an embodiment of the invention is shown, namely show Fig. Ι the longitudinal section,
Fig. 2 den QuerschnittFig. 2 shows the cross section
des Arbeitszylinders e, der mit dem Schrumpfmantel d versehen ist. Die Stützringe α bestehen aus einzelnen Abschnitten b, c, sind zur Vermeidung von Lagenänderungen beim Aufbringen des Laufmantels d in Nuten des Arbeitszylinders e eingelassen und weisen Kerben f, g auf, durch welche das Kühlmittel zwischen den Arbeitszylinder und die Ringe gelangen und diese sonst besonders stark sich erwärmenden Stellen des Arbeitszylinders wirksam kühlen kann.of the working cylinder e, which is provided with the shrink jacket d. The support rings α consist of individual sections b, c, are embedded in grooves of the working cylinder e to avoid changes in position when the barrel jacket d is applied and have notches f, g through which the coolant can get between the working cylinder and the rings, and otherwise especially can effectively cool hot spots of the working cylinder.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE309046C true DE309046C (en) |
Family
ID=562252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT309046D Active DE309046C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE309046C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4779578A (en) * | 1985-12-23 | 1988-10-25 | Wankel Gmbh | Fluid-cooled housing of a rotary piston internal combustion engine |
| EP1227236A3 (en) * | 2001-01-20 | 2003-01-22 | Bayerische Motoren Werke Aktiengesellschaft | Crankcase for a liquid cooled piston combustion engine |
-
0
- DE DENDAT309046D patent/DE309046C/de active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4779578A (en) * | 1985-12-23 | 1988-10-25 | Wankel Gmbh | Fluid-cooled housing of a rotary piston internal combustion engine |
| EP1227236A3 (en) * | 2001-01-20 | 2003-01-22 | Bayerische Motoren Werke Aktiengesellschaft | Crankcase for a liquid cooled piston combustion engine |
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