Deglazing in engine mechanics refers to the process of removing the glaze or smooth layer that forms on the internal surface of the engine cylinder wall. Think about the cylinder wall like the insides of a straw, where the air and fuel mix to make the engine work.
Over time, the movement of the piston inside the cylinder causes a high amount of friction that heats up the cylinder wall, causing the cylinder wall to smooth out and lose some of its texture. This process is called glaze formation, and it can lead to poor engine performance, decreased fuel efficiency, and damage to the engine parts.
So, the process of deglazing involves scraping or grinding off this smooth layer to restore the texture of the cylinder wall. This makes the surface rougher and helps the piston to hold onto it better, which creates a good seal and improves engine performance.
In summary, deglazing is like cleaning the insides of a straw to improve how well it works.