Cylinder liner and its types
The cylinder liner is a cylindrical piece that is used inside the engine block to prevent wear and tear and is considered one of the most important internal parts of the engine and cylinder block. The cylinder liner is one of the vital and at the same time flexible internal components of combustion engines.
The cylinder sleeve or cylinder liner is a piece with a cylindrical structure that is placed in the cylinder block. And different types of dry cylinder liner, wet cylinder liner and finned cylinder liner are produced and manufactured. And it is used for all kinds of heavy and light vehicles such as: passenger cars and trucks, buses, road construction machines and all kinds of rail and marine engines.
And it is mainly a hollow cylinder with a thin and metallic wall, which is an important violation in combustion engines. The outer surface of the cylinder bush is in direct contact with the cylinder block and its inner surface is well polished to be in contact with the moving pistons.
When the engine starts working, a significant amount of wear and tear occurs due to the reciprocating movement of the pistons. When an engine is started, the piston as well as the piston rings are jerked at high speeds. For this reason, the walls of the cylinder withstand high pressure and high temperature. Therefore, cast iron liners are used to maintain the life of the engine.
The reason for using cast iron in the composition of cylinder liners is their extraordinary ability against abrasion, which is used for cylinder parts. However, in recent times aluminum alloys have gained wide popularity due to their light weight. Lighter engines are preferred over heavy engines.
This is when aluminum cylinders are damaged or deformed during operation, when the sliding movement of pistons and rings occurs. And it has a weak resistance to wear. For this reason, cast iron cylinder bushings are still used for light and heavy cars.
Tos Alam is one of the largest and most important manufacturers of bush cylinders in Iran and in the Middle East, which has the ability to produce this part with the best alloy and material along with the use of modern technology.
and provides cylinder bushings with the highest quality and the best price to domestic and foreign customers. For more information about cylinder bushings and its types, visit our website or contact our technical experts.
Dry cylinder liner
Dry liners are among the main piston protectors. This part must be resistant to high temperature and impurities. Therefore, a quality material such as cast iron and ceramic-nickel plated should be used to make this part.
Dry liners are smaller than wet liners. These types of liners are not in direct contact with the coolant. It is connected in such a way that there is no empty space between the dry cylinder liner and the cylinder block.
Wet liners
Wet liners protect pistons in a different way than dry liners, while both are made of the same material. One of the most important features of this type of liner is direct contact with the coolant.
Wet cylinder liners are sometimes fitted with small openings to help disperse heat and impurities. This type of liner has a water turner. If the liner does not have a water swivel, it will be created due to interaction with the cylinder block.
Ribbed cylinder liners
The liner of the finned cylinder is made of the same type of heat and impurity resistant metal. These types of liners are designed and made for air-cooled engines. And in the way they work, they are more similar to dry liners because the cooling in most engines is cool air. However, these liners are equipped with small holes for air flow to direct the air into the liner for cooling.
