PISTON RINGS

The Compression ring is installed in the upper grooves of the piston. Its main role is to transfer heat from the piston to the cylinder liner. Additionally, it helps control the side thrust on the piston, which can lead to variations. 

 The Scraper ring is situated alongside the oil control ring. Its function is to remove excess oil from the cylinder walls. Additionally, it ensures the correct oil film thickness, preventing any oil from entering the combustion chamber. 

 The il control ring is positioned below the compression ring. Its function is to ensure adequate lubrication between the piston and the cylinder. Also, if excess lubrication accumulates inside the cylinder, the ring helps to scrape it away.