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What is Cylinder Liner?
The cylinder liner or the bore in the block form the side walls of the combustion chamber. The cylinder head and valves form the upper surface of the combustion chamber and the piston and the lower rings.
Inside the cylinder liner or the cylinder bore, piston and rings slide up and down on a thin film of oil. The hermetic seal between the piston ring and the cylinder wall and closes the combustion chamber separated from the lower engine part, known as casing. A process known as grinding plane creates an improved scratch finish transverse cylinder walls. This process improves the oil retaining ring prevents wear. It also reduces the exhaust gas passing the crankcase and oil consumption, and reduces the settling period. The cylinder liners are cooled by direct contact with the coolant flowing around its outer surfaces within the block. The sleeves are held in place with a top flange (or intermediate support) and an annular seal at the bottom.
Because the shirts are not supported by the block along its length, its thick walls should provide sufficient strength to withstand the forces of combustion.
The holes drilled in the block by using the heat dissipating coolant flowing around the openings and internal passages in the engine block. To retrieve the motors without liners that have reached the limits of orifice sizing cylinder sleeves used during dry engine rebuild.During the refurbishment, each cylinder bore is machined slightly bigger and a sleeve is inserted in the dry orifice. These are called "dry sleeves" because the engine coolant does not make direct contact with the outer surface of the sleeve. The shirts, on the other hand, are often called "wet liners" because their outer walls are exposed directly to the water cooling system of the shirts within the block.
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