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发明授权
CN101237950B 柴油内燃机的气缸盖的浇铸毛坯件、铸造该毛坯件的方法以及由该毛坯件制成的气缸盖 失效 - 权利终止

柴油内燃机的气缸盖的浇铸毛坯件、铸造该毛坯件的方法以及由该毛坯件制成的气缸盖
摘要：
本发明涉及一种用于制造用于通过柴油燃料驱动的内燃机的气缸盖的浇铸毛坯件，包括在加工完成的状态下用于安装在发动机缸体的相应的密封面上的密封面(2)，该密封面在气缸盖的浇铸毛坯件(1)上的密封面部分(8)上构成，其厚度(D)在铸造状态下相对于其在密封面(2)的切削精加工之后获得的标称厚度(Dn)具有一加工余量(Dz2)，且包含一燃烧室区域(3)，该燃烧室区域配属于在发动机缸体内成形的燃烧室。在这样一种气缸盖(1)中，按照本发明由此以简单的方式实现一优化的负荷能力，这样在密封面(2)的燃烧室区域(3)中的密封面部分(8)的加工余量(Dz3)最高为在密封面的其它区域上的密封面部分(8)的加工余量(Dz2)的15％。同样地本发明涉及到一由按本发明的气缸盖的浇铸毛坯件最后加工成的气缸盖及其制造方法。
摘要（英）：

An unmachined cylinder head casting for producing a cylinder head for internal combustion engines powered with Diesel fuel has a sealing surface (2) intended for mounting in the finished state on a corresponding sealing surface of an engine block and designed on a sealing surface section (8) of the unmachined cylinder head casting (1), the thickness (D) of section (8) in the casting state exhibiting a machining allowance (Dz2) in relation to its set thickness (Dn) obtained after a material-removing finishing of the sealing surface (2), the sealing surface (2) further including a combustion chamber region (3) associated with the combustion chamber formed in the engine block. According to the invention, an optimum load-bearing capacity of this type of cylinder head (1) is achieved in a simple manner, in that the machining allowance (Dz2) of the sealing surface section (8) in the combustion chamber region (3) of the sealing surface (2) amounts to maximum 15 % of the machining allowance (Dz2) of the sealing surface section (8) in the remaining region of the sealing surface. Also disclosed is a finished cylinder head produced from the unmachined cylinder head casting according to the invention, and a process for producing the same.

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