| 摘要 |
In a water-cooled multi-cylinder internal combustion engine the cylinder head is cast without the use of a core for the water jacket and is provided with cast channels of a predominantly longitudinal direction in the area of the upper ends of the cylinders, which are open towards the cylinderhead gasket, and with a bore for the cooling water going lengthwise through the cylinderhead in the vicinity of the valve guides. A continuous cast cooling channel is provided at one of the long sides of the cylinderhead only, which is open towards the cylinderhead gasket and is intended for cooling the upper cylinder ends. At least one inlet bore per cylinder is arranged at the long side opposite of the open cooling channel, which connects to the cooling water chamber in the cylinder block and ends in a crosshole going through the cylinderhead in the area of the valve bridges, or of the bore holding the spark plug or injection device, respectively. Further, all crossholes on the side opposite of the inlet bores end in the open cooling channel serving as a collecting channel, and an additional longitudinal bore is provided on the side of the inlet bores in the area of the upper cylinder ends.
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