The main purpose of these devices is to seal the combustion chamber and improve heat transfer to the cylinder wall. What are they?
Answer Piston Rings
A piston ring is a split ring and it has several vital jobs in the combustion process. However, two tasks are of the utmost importance: sealing the chamber to reduce the risk of lost gasses in the crankcase and improving the heat transfer to the cylinder wall.
Asked by DRay585 · Last updated 5 years ago · 25.3K views · SOURCE
