Thermally and/or mechanically actuated component wall of a fluid and/or gas-conveying component, in particular a cylinder head of a combustion engine
A mechanical load, internal combustion engine technology applied in the field of component walls to achieve the effect of reducing costs
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[0042] exist figure 1 A plan view of a partial area of a cylinder head 1 of an internal combustion engine is shown in the area of two adjacent valve seats 2 , 3 . As a crack initiation, a notch 4 is provided on the upper side of the bridging wall 5 , wherein the notch 4 is shifted a little relative to the smallest valve seat distance. Bore 6 runs as a crack stop parallel to the bridge wall surface in bridge wall 5 as connection of valve seats 2 , 3 below the cutout. For better visibility, the valve seats in all figures are shown without seat rings.
[0043] figure 2 A second alternative arrangement of the combination of crack initiation and crack arrestors is shown:
[0044] to this end, figure 2 A perspective plan view of a partial region of a four-valve cylinder head 1 with four valve seats 3 a , 3 b , 3 c , 3 d is shown. Here, compared to figure 1 The notches 4 a , 4 b , 4 c , 4 d are respectively arranged as crack initiations in the valve bridging region with t...
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