Patent ID: 6842979

Claim:
A method of producing a cylinder in a two-cycle engine, wherein said cylinder has an inner chamber that is delimited by a cylindrical piston gliding surface formed by a coating provided on an inwardly directed surface of a bore of said cylinder, and wherein at least one transfer channel is provided that opens into said inner chamber of said cylinder via an inlet window disposed in said piston gliding surface, said method including the steps of: mechanically machining said surface of said cylinder bore as a preparation for provision of said coating, wherein said machining results in window edges that surround said inlet window; at least partially machining said window edges such that a chamfered window corner results; subsequently providing said surface of said cylinder bore with said coating, wherein said coating at least partially overlaps said chamfered window corner, and wherein in a region of said window corner there results a location of least spacing relative to a channel axis of said at least one transfer channel; and to form said piston gliding surface, machining said coating to a finished dimension such that in the region of said chamfered and at least partially coated window corner there is formed a coating edge having a wall spacing H relative to said location of least spacing, wherein said wall spacing has a maximum value of 0.7 mm.