DE1938133A1 - Reciprocating internal combustion engine with a cylinder head and cylinder housing consisting of a block - Google Patents

Description

Daimler-Benz Aktiengeaellschaft Daim 8304A

Stuttgart-Untertürkheim July 23

"Reciprocating internal combustion engine with an existing block Cylinder head and cylinder housing "

The invention relates to a reciprocating internal combustion engine with a cylinder head and cylinder housing consisting essentially of an inner wall which together with a cylinder head base delimits the cylinder roughness, and one of the inner wall consists of an outer wall separated by a cooling chamber and is connected by screws from a crankcase is.

It is a reciprocating internal combustion engine known as the type mentioned, at the side of the fiusSss ^ asa Wsrad aa ^ © © rdn®te flanges / ' the screws that fasten the epic ZyI Indian housing and Manufacture and record crankcase. Furthermore, the The bottom of the cylinder head is essentially horizontal in its height arranged transverse walls on the outer wall · This becomes d ^ e inner wall due to considerable forces, especially transverse and longitudinal forces; beaiia-prucht, which causes a deformation of the cylinder laiifbfihn. Dia'cross walls between the cylinder head base and the outside Let wall -a uniform cooling of the upper part of the inner Wall not too, so that in this thermally highly stressed part Thermal stresses occur. /

The invention has the task of designing the cylinder head and cylinder housing in such a way that the inner ¥ ar? D of forces remains free and achieves an even cooling of the inner wall is to thereby cause a deformation of the cylinder surface su •avoid.

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The object is achieved according to the invention in that the central longitudinal axes of the screws in or very close to the center of the lie outer wall and that the outer wall extends up to the connection points above the cylinder head base which is supported by the cylinder head base via supporting walls.

Through the training that is between the Cylinder head base and the crankcase occurring forces from Cylinder head base over the stub walls on the connection points and from there in a straight line over the outer Vand and the Screws together with the crankcase. Through this straight direction also no transverse forces can act on the inner wall «The cooling of the inner wall takes place evenly, as the cooling space between the inner and outer wall is not interrupted by transverse walls and so the coolant spreads the inner wall evenly can wash around

In an advantageous embodiment of the invention, all support walls can be inlet and outlet channel walls, spark plug niche walls and / or walls that accommodate other functional parts · By arranging these walls accordingly, it is possible that the supporting walls perform several functions at the same time

The drawing, which represents an exemplary embodiment of the invention, shows a partial cross section of a cylinder head and cylinder housing of a reciprocating piston internal combustion engine consisting of a block. The inner wall 1 carries the cylinder running surface h on its inside. From the edge of the cylinder head base 2, a support wall 5 leads to a connection point 6 located above the cylinder head base 2, from which the outer wall 9 extends parallel to the inner wall 1 and is parallel to the inner wall 1

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the inner wall 1 and the supporting wall 5 surrounds a cooling space 10. The outer wall 9 has several at its lower end Reinforcements 11 distributed over the circumference, in which oval bores 12 are arranged. In these screws, not shown, are screwed that the cylinder housing with connect a crankcase, not shown. The central longitudinal axes 13 of the threaded holes 12 and thus the screws lie in the middle of the outer wall 9 «So that the between the cylinder head base 2 and the crankcase occurring forces over the support wall 5 to the junction 6 and from there in a straight direction over the outer wall 9 and the screws to Crankcase passed * Sine at the lower edge of the outer wall between this and the inner wall 1 arranged wall lU serves as the end of the cold room «10, its walls are, however, like that small that it cannot transmit any significant forces. Her A seal can also function,

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Claims (2)

Palm 83OUA Expectations Reciprocating internal combustion engine ait au · a block existing cylinder head and cylinder casing, which essentially consists of an inner wall defining together with a cylinder head base A "n cylinder space, and is one of thee inner wall separated by a cooling chamber outer wall and the through bolts is connected to a crankcase, characterized in that the central longitudinal axes (13) of the screws are in or very close to the center of the outer wall (9) and that the outer wall (9) is connected to above the cylinder base (2) connecting points (6 ), on which the cylinder head base (2) is supported by support walls (5). 2. Reciprocating internal combustion engine according to claim 1, characterized in that inlet and outlet channel walls, ignition plug niche walls and / or other functional parts receiving walls serve as support walls (5). 009885/1332