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The Crucial Role Of Cylinder Liner And Piston Pin

By Author: Gaurav Madan
Total Articles: 3

A piston is an engine part which is cylindrical and enables to produce force by sliding back and forth within the cylinder bore at the time of combustion process. A piston ring is a split ring which can expand to make a seal between the cylinder wall and piston. These types of rings are made by using cast iron. The reason is that cast iron is able to keep the integrity of its actual shape under load, heat and other active forces.

Piston rings help in conduction of heat from the combustion chamber to cylinder wall, sealing the combustion chamber and returning oil to the crankcase. The configuration and size of the piston rings are different according to the cylinder material and design of the engine.

Cylinder Liner

It is fitted within an engine block to make a cylinder. It plays a major role in the interior part of an engine. It acts as the interior wall of a cylinder and creates a sliding surface for piston rings to retain lubricant within the cylinder. It tends to withstand extreme pressure and heat developed during the combustion procedure. There are some factors which ensure the creation of cylinder liner and some of these factors are as follows

Creating sliding surface, liner helps in the different function of the piston such as offering wear resistance to the piston and liner, decreasing noise with functioning and consumption of the less amount of lubricant.
Cylinder liner helps to prevent combustion and compression of gas from escaping outside. Escaping of excess heat to the outside is harmful to other parts of an engine which can lead to a breakdown. Moreover, a fixed amount of heat is essential for the proper functioning of piston rings and piston. If the heat escapes outside, a temperature dis-balance will be created and this will create a problem in the piston.
• An engine can fail due to an excess amount of heat. So, cylinder liners play an important role to reduce this excess heat by transferring it to another unit. Generally, excess heat is transmitted to the coolant to decrease the heat for the proper functioning of the engine.

Piston Pin

It transfers the total generated power by the combustion procedure from the piston through the linked rod to the crankshaft. Piston pin
links the connecting rod and piston and can withstand high loads for changing directions. Generally, it is made up of nitrated steel or case-hardening with the polished surface and smooth ground. It is important to optimize a fixed load bearing power of pins due to withstand the producing loads for combustion procedure and continuous increasing of firing pressure.

Piston pins are suitable for precision, diverse application and made up of high-quality material. They can be bent in an oval-shaped and sheared for the oscillating forces of the mass inertia forces and the ignition pressure in the opposite direction. A piston can be completely damaged due to the large deformation of the piston pins. Piston pin helps to transmit power within the pin bore of the connecting rod and the piston.


Cylinder liners and the piston pins play an important role in the smooth working of an engine. You can select cylinder liners by choosing perfect raw material and surface texture. Piston pins help to transfer the total power produced in the combustion procedure within the piston through the connecting rod to the crankshaft. It is one of the most stressed parts within an engine. So, it is essential to choose cylinder liners and piston pins from the best manufacturing company.

More About the Author

The India Piston Ring has been into manufacturing the top class piston rings, cylinder sleeves and different types of engine parts. It has been making the types of parts of the engine and also its subparts, for a number of decades now, using the best in class and state-of-art technology to manufacture the products.

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