Cylinder liner of an internal combustion engine
AssigneeDaimlerChrysler AG
InventorsKlaus Land, Franz Rueckert, Peter Stocker
Life of this patent
Estimating the term…
Abstract
In a cylinder liner of an internal combustion engine for casting into a light-metal crankcase to be cast, in order, during the casting in of the cylinder liner, to achieve as good a binding as possible of the cylinder liner to the surrounding casting material, the cylinder liner has on the outer circumference, in the region of the upper dead center of the piston rings of a piston guided in the liner, an activation layer which consists of a material which, due to the heat effect of the liquid casting material, connects metallically more rapidly to the latter than the liner material, and in that the cylinder liner has a rough surface on the outer circumference following the region of the upper dead center.
Claims6
A cylinder liner of an internal combustion engine for casting into a light-metal crankcase which is to be cast, comprising:
- an activation layer on an outer circumference of the cylinder liner in a region of an upper dead center of piston rings of a piston guided in the liner, the activation layer including a material which, due to a heat effect of liquid casting material, is configured to connect metallically more rapidly to the casting material than the liner material;
- and
- a rough surface on the outer circumference following the region of the upper dead center.
Dependencies are inferred from the claim text.