DE417750C - Cylinder cover for four-stroke internal combustion engines - Google Patents

Cylinder cover for four-stroke internal combustion engines

Info

Publication number
DE417750C
DE417750C DEM84441D DEM0084441D DE417750C DE 417750 C DE417750 C DE 417750C DE M84441 D DEM84441 D DE M84441D DE M0084441 D DEM0084441 D DE M0084441D DE 417750 C DE417750 C DE 417750C
Authority
DE
Germany
Prior art keywords
cylinder cover
internal combustion
combustion engines
stroke internal
valve
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
DEM84441D
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.)
GEORG MANGOLD DR ING
Original Assignee
GEORG MANGOLD DR ING
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 GEORG MANGOLD DR ING filed Critical GEORG MANGOLD DR ING
Priority to DEM84441D priority Critical patent/DE417750C/en
Application granted granted Critical
Publication of DE417750C publication Critical patent/DE417750C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • F02F1/26Cylinder heads having cooling means
    • F02F1/36Cylinder heads having cooling means for liquid cooling
    • F02F1/40Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/02Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • F02F2001/244Arrangement of valve stems in cylinder heads
    • F02F2001/247Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Description

Zylinderdeckel für Viertaktverbrennungskraftmaschinen. Es sind Zylinderdeckel für Zweitäktverbrennungskraftmaschinen bekannt, bei denen eine Anzahl von Rippen parallel zur Zylinderachse angeordnet sind, die dem Kühlwasser den Durchtritt nur .an dem gasberührten Dekkelboden gestatten.Cylinder cover for four-stroke internal combustion engines. There are cylinder covers known for two-stroke internal combustion engines, in which a number of ribs are arranged parallel to the cylinder axis, which only allows the cooling water to pass through . Allow on the gas-wetted lid base.

Die Erfindung besteht nun darin, daß bei einem Zylinderdeckel für VieTtaktverbrennungskraftmaschinen, bei denen die Ventile im Deckel angeordnet sind und mit zwangläufiger Führung des Kühlwassers Einlaßventil-, Brennstoffventil- und Auslaßventilkanone durch Rippen. verbunden sind, die in an und für sich bekannter Weise dem Kühlwasser den Durchtritt nur an der gasberührten Deckelfläche gestatten. Durch die Anordnung einer oder zweier derartiger Rippen wird bei dein Zylinderdeckel für Viertaktmotoren die peue Wirkung erzielt, daß sich die Kühlwasserströmung mit großer Geschwindigkeit und großer Wirbelung über den ganzem. gasberührten Deckelboden erstrecki, und daß dadurch dieser ganze Deckelboden und insbesondere die besonders gefährdeten Stellen des Zylinderdeckels zwischen den Ventilkanonen besonders wirksam gekühlt werden. Die Rippen zwischen den Ventilkanonen können auch an der Durchtrittsstelle verbreitert 'sein. Außerdem wird durch die Anordnung dieser Rippen die weitere neue Wirkung erzielt, daß die Temperaturunterschiede zwischen dem gasberührten Deckelboden und dem Übrigen Teil des Deckels geringer und dadurch der ganze Zylinderdeckel günstiger durch Wärmespannungen beansprucht ist. In Abb. i, z, 3, q. und 5 ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt, und zwar sind Abb. i, z, 3 und 4 Längsschnitte und Abb.5 ein Querschnitt durch den Zylinderdeckel. Es sind a die Einlaßventilkanone, b der Zuführungskanal zu dieser, c die Auslaßventükanone, d der Zuführungskanal zu dieser, e die Brennstoffventilkanone, f ist der untere gasberührte Deckelboden. Erfindungsgemäß sind Einlal3-, Brennstoff- und Auslaßventilkanone durch die Rippen h verbunden, die nicht bis zu dein gasberührten Deckelboden f reichen. Um eine zwangl,äufige Wasserführung zu erreichen, sind noch die Rippeni, k und p, die vom oberen Deckelboden g zum unteren Deckelboden f gehen, und die Rippen 1 und m angeordnet, die den Wasserdurchtritt über dem Einlaßventil- und dem Auslaßventilkanal verhindern: n ist der Kühlwassereintritt, o der Kühlwasseraustritt. Durch diese Anordnung wird das Kühlwasser gezwungen, den in Abb. 5 eingezeichneten Weg zu nehmen. Es fließt also vom Eintritt durch den engen Raum unter dem EinlaßventiliaaI b durch, tritt dann durch den Raum zwischen Eirlaßventilkanoae und Brennstoffventilkanone, dann durch den Raum auf der anderen Seite der Brennstoffventil- und Auslaßventillmnone, tritt dann unter dem Auslaßventilkanal durch, umspült diesen und entweicht durch die Ausflußöffnung p über dem Auslaßventilkanal.The invention now consists in the fact that in a cylinder cover for multi-cycle internal combustion engines, in which the valves are arranged in the cover and with the inevitable guidance of the cooling water, inlet valve, fuel valve and outlet valve cannon through ribs. are connected which, in a manner known per se, allow the cooling water to pass through only on the cover surface in contact with the gas. By arranging one or two such ribs in your cylinder cover for four-stroke engines, the peue effect is achieved that the cooling water flow with great speed and great swirl over the whole. gas-wetted cover base extends, and that this entire cover base and in particular the particularly endangered areas of the cylinder cover between the valve cannons are particularly effectively cooled. The ribs between the valve cannons can also be widened at the point of passage. In addition, the arrangement of these ribs achieves the further new effect that the temperature differences between the gas-contacted cover base and the rest of the cover are lower and the entire cylinder cover is more favorably stressed by thermal stresses. In fig. I, z, 3, q. and FIG. 5 shows an exemplary embodiment of the subject matter of the invention, namely FIGS. i, z, 3 and 4 are longitudinal sections and FIG. 5 is a cross section through the cylinder cover. They are a the inlet valve cannon, b the feed channel to this, c the outlet valve cannon, d the feed channel to this, e the fuel valve cannon, f is the lower, gas-contacted cover base. According to the invention, the inlet, fuel and outlet valve cannons are connected by the ribs h which do not extend as far as the cover base f which is in contact with the gas. In order to achieve a compulsory, frequent water flow, the ribs i, k and p, which go from the upper lid base g to the lower lid base f, and the ribs 1 and m , which prevent the passage of water above the inlet valve and outlet valve channels: n is the cooling water inlet, o the cooling water outlet. This arrangement forces the cooling water to take the path shown in Fig. 5. It therefore flows from the inlet through the narrow space under the inlet valve aaI b, then passes through the space between the inlet valve port and the fuel valve cannon, then through the space on the other side of the fuel valve and outlet valve port, then passes under the outlet valve port, flows around it and escapes through the outflow opening p above the outlet valve channel.

Bekanntlich treten die meisten Risse bei derartigen Deckeln in dem gasberührten Bo-den fzwischen den Ventilkanonen a, c und e auf, da diese Stellen am heißesten werden. Durch .Anordnung der Rippen h wird nun erreicht, daß das Kühlwasser durch diese Rippen gezwungen wird, die gefährdeten Stellen mit großer ' Geschwindigkeit, zu durchströmen und damit wirksam zu kühlen. Diese Kühlwirkung wird noch wirksam verstärkt durch die Strahlwirkung der Rippen, die bewirkt, daß sich im Wasser ein besonderer Wasserstrahl bildet, der eine lebhafte Wirbelung hervorruft, wie das in Abb. 3 dargestellt ist. Vor und nach diesen Stellen wird das Wasser durch die unteren Wände der Einlaßventil- und AuslaBvendlkanäle gezwungen, sowieso an diesen Stellen mit großer Geschwindigkeit den unteren gasberührten Deckelboden zu bestreichen.As is known, most cracks in such covers occur the fzwischen the valve cannons a, c and e on the gas in contact with soil, as these locations are at the heißesten. By arranging the ribs h it is achieved that the cooling water is forced by these ribs to flow through the endangered areas at great speed and thus to cool it effectively. This cooling effect is effectively reinforced by the jet effect of the ribs, which causes a special water jet to form in the water, which creates a lively vortex, as shown in Fig. 3. Before and after these points, the water is forced through the lower walls of the inlet valve and outlet valve ducts to sweep the lower gas-contacted cover base at these points anyway at high speed.

Um die Luft aus denn. oberen Teil des Deckels 'zu entfernen, sind zwecke iäßigerweise in den Rippen k, Z, m und p Luftlöcher angebracht, die aber nur so größ sind, daß die Luft entweicht, also für die Wasserströmung praktisch nicht in Betracht kommen. Da dadurch in dem oberen Teil des Dekkels eine praktisch ins Gewicht fallende Wasserströmung ;nicht vorhanden ist, so wird das Wasser und damit der obere Deckelboden g wärmer als bei den bekannten Ausführungen, so daß dadurch die Wärmespannungen %wi.-schen dem unteren und oberen Boden ebenfalls vermindert werden.To the air out then. to remove the upper part of the lid air holes are made in the ribs k, Z, m and p, but they are only so big that the air escapes, so practical for the flow of water out of the question. As a result, a practical in the upper part of the lid significant water current; is absent, the water and so that the upper lid base g warmer than in the known designs, so that this also reduces the thermal stresses on the lower and upper floors will.

Claims (1)

PATENTANSPRUCH: Zylinderdeckel für Viertaktverbrennungskraftmaschi.nen mit nebeneinanderliegenden Ventilen und xwangläufiger Kühlwasserführung, dadurch gekennzeichnet, daß eine die Brennstoffven.tilkanone (e) mit der Einlaß-und Auslaßventilkanone (a, c) in bekannter Weise verbindende Rippe (h) dem Kühlwasser den Durchtritt nur an dem gasberührten Deckelboden gestattet. PATENT CLAIM: Cylinder cover for four-stroke internal combustion engines with valves lying next to one another and an external cooling water supply, characterized in that a rib (h) connecting the fuel valve cannon (e) to the inlet and outlet valve cannon (a, c) in a known manner only allows the cooling water to pass through allowed on the gas-wetted lid base.
DEM84441D 1924-04-02 1924-04-02 Cylinder cover for four-stroke internal combustion engines Expired DE417750C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM84441D DE417750C (en) 1924-04-02 1924-04-02 Cylinder cover for four-stroke internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM84441D DE417750C (en) 1924-04-02 1924-04-02 Cylinder cover for four-stroke internal combustion engines

Publications (1)

Publication Number Publication Date
DE417750C true DE417750C (en) 1925-08-20

Family

ID=7319922

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM84441D Expired DE417750C (en) 1924-04-02 1924-04-02 Cylinder cover for four-stroke internal combustion engines

Country Status (1)

Country Link
DE (1) DE417750C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580335A1 (en) * 1985-04-12 1986-10-17 Daimler Benz Ag LIQUID-COOLED FOUR-VALVE HEAD FOR A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE
DE10328460A1 (en) * 2003-06-25 2005-01-13 Daimlerchrysler Ag Cylinder head of liquid-cooled internal combustion engine, comprises a rib located in coolant chamber on the cylinder head roof and running in longitudinal direction of internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2580335A1 (en) * 1985-04-12 1986-10-17 Daimler Benz Ag LIQUID-COOLED FOUR-VALVE HEAD FOR A MULTI-CYLINDER INTERNAL COMBUSTION ENGINE
DE10328460A1 (en) * 2003-06-25 2005-01-13 Daimlerchrysler Ag Cylinder head of liquid-cooled internal combustion engine, comprises a rib located in coolant chamber on the cylinder head roof and running in longitudinal direction of internal combustion engine

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