What functions are performed by piston rings?
A) Sealing only.
B) Pressurizing only.
C) Lubrication only.
D) Sealing, lubrication and cooling.

Question

Quizplus · Accepted Answer

Piston rings serve multiple functions: they seal the combustion chamber to prevent the escape of gases, lubricate the piston by controlling oil distribution, and help cool the piston by transferring heat from the piston to the cylinder wall.

What Functions Are Performed by Piston Rings