Cylinder block for liquid-cooled internal combustion engines with inserted cylinder liner

Claim 1

A cylinder block arrangement for liquid-cooled internal combustion engines comprising a cylinder liner inserted into a cylinder mounting body forming part of the cylinder block, spiral groove means being formed in effect between the cylinder liner and the mounting body, said groove means being defined by said mounting body and said cylinder liner, said mounting body being provided with upper and lower cooling liquid spaces formed by substantially parallel wall portions of the cylinder block subdivided into the upper and lower cooling liquid spaces by a common cross wall forming a reinforcing web portion extending essentially transversely to the cylinder axis about midway of the length of the axial extent of the spiral groove means, the length of the wall portions defining the spaces being substantially coextensive with the axial extent of the spiral groove means, the upper cooling liquid space being closed off in the area of the upper end of the spiral groove means by a cross wall and the lower cooling liquid space being closed off within the area of the lower end of the spiral groove means by a further cross wall, inleT means within the upper area of the upper cooling liquid space providing an inlet for the cooling liquid with the upper end of the spiral groove means, and outlet means within the lower area of the cooling liquid space providing an outlet for the cooling liquid at the lower end of the spiral groove means so that the cooling liquid flows from the upper cooling liquid space into the upper end of the spiral groove means, then passes through the spiral groove means and flows out at the lower end thereof by way of the outlet means into the lower cooling liquid space.