Reasons for Cylinder Liner Wear and How To Check it

Cylinder Liner Wear

Cylinder Liners are an important component of engines. And especially so for engines that power heavy load machinery. This is so because the testing working conditions of an engine produce considerable heat and frictional tension as a by-product, one which can damage the piston rings and other engine associated components.

Thus, in order to reduce the internal wear and tear incurred by engine parts, technicians use cylinder liners. In simple terms, cylinder liner can be described as a thick, impervious, and friction-less layer between piston rings and cylinder that can absorb heat. Since it holds a strategic position between two of the most essential components of an engine, liners are more susceptible to damage. Some kinds of cylinder liner wear that can be commonly observed by technicians in machinery are as follows:

Frictional Wear
Friction is the opposing force that acts between any two surfaces when they interact with each other. It is a leading cause of damage in many kinds of mechanical technologies. In case of an engine, the friction degrades the surface quality of both the piston rings and the cylinder liners over time. The amount of damage incurred by cylinder liners in India due to frictional forces is further aggravated by the intensity with which piston rings operate and their compositional quality, engine load, pressure, lubrication, and efficiency.

Corrosive Wear
Unlike the physical damage caused by friction, corrosion is a chemical process that prompts the reaction between the micro particles of two surfaces, thereby altering their quality and suitability to certain functions. Even though it is a rarity in cylinder liners of India, corrosive wear occurs as a result of combustion of very alkaline or acidic natured fuel, poor quality engine components, and presence of moisture in the block.

Abrasive Wear and Tear
It is a complete physical and passively damaging wear that occurs as a result of the presence of granular particles between cylinder liners and its surrounding components. Anything between metal shavings, dust, debris, and hardened plastics can cause this kind of damage.

Adhesion or Scuffing Tear
It is caused by partial welding between particles of liners and piston rings as a result of accumulated static energy.

Every kind of wear and tear in the cylinder liner can be prevented using simple precautionary measures and following a strict maintenance schedule for the engine block. Some ways to check cylinder liner wear are as follows:

Keeping the Intake Fuel Clean
Most of the wear in a liner is caused by reactions with unwanted particles in an engine block. The most common entry for such particles is through poor quality fuel. By checking the quality of intake fuel and ensuring that it doesn’t contain solids, one can prevent considerable liner wear.

Proper Lubrication is the Key
Frictional, abrasive, and corrosive wear are direct resultants of tense interactions between piston rings and liner molecules. By sufficiently lubricating each of the engine parts at regular intervals, internal wear of all its components can be minimized.

Moisture Out Always
Water is the foremost de-grader of mechanical parts and if its presence is left unchecked, it can slowly hollow out the liner and prompt oxidation reactions in the piston rings.

Cylinder liners of India are being exported to a huge number of customers all around the world. Today, their significance has risen all the more ever since the mechanical revolution has taken a turn for the better. But in order to ensure that every liner performs to its best abilities, manufacturers must ensure that they are not exposed to degrading, reactive, and potentially harmful agents.

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