Patent ID: 7337756

Claim:
A cylinder liner for a coolant groove-type internal combustion engine, having a cylinder block that includes a frame having at least one longitudinal surface and a lateral member transverse to the longitudinal surface, the lateral member defining a coolant passage therethrough, wherein the lateral member also defines at least one cylinder opening and a groove coolant port extending from the coolant passage to the cylinder opening, the cylinder liner comprising: a. a cylindrical member, defining an elongated cylinder bore, the cylinder member having an outer surface that has a diameter that allows the cylindrical member to be fitted into the cylinder opening so as to form a coolant jacket between the outer surface of the cylindrical member and the longitudinal surface, the outer surface of the cylindrical member including an upper portion that plugs the groove coolant port; and b. a plurality of cooling fins disposed on the outer surface of the cylinder liner in a portion of the outer surface that facilitates communication between the cooling fins and the coolant jacket.