The cylinder bush is a part that can be seen in all engines, but in some of them this part is connected to the cylinder body and is not cooled directly, but in others, the bush is a separate part that is cooled by water between it and the cylinder body. . In some engines, the bush is not in contact with water and it is called a dry bush. On the other hand, in some engines, the bushing is in direct contact with water and is cooled, which is called a cooler bushing.
Dry cylinder bushing
Dry bushings 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 bushes are smaller than wet bushes. These types of bushings 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 bush and the cylinder block. Wet bushings
Wet bushings protect pistons in a different way than dry bushings, while both are made of the same material. One of the most important features of this type of bush is direct contact with the coolant. Wet cylinder liners are sometimes fitted with small openings to help disperse heat and impurities. This type of bushing has a water turner. If the bushing does not have a water swivel, it will be created due to interaction with the cylinder block. Splined cylinder bushings
The splined cylinder liner is made of the same type of heat and impurity resistant metal. These types of bushings are designed and made for air-cooled engines. And in the way they work, they are more similar to dry bushings because the cooling in most engines is cool air. However, these bushes are equipped with small holes for air flow to direct the air into the bush for cooling.
What is the use of the Bush Cylinder?
So far, you know the cylinder bushing and you even understand its function, but why should a bushing be used inside the cylinder? Suppose, for various reasons, the inner body of the cylinder is damaged due to wear on the piston and bearing. In this case, if the cylinder body is one piece, to solve the problem of scratching, the inner body of the cylinder must be turned, which is very time-consuming and expensive, and also causes the diameter of the cylinder to become larger. But when the engine uses a separate bush, it is easy to remove and replace the bush from the engine when such problems occur.
