Should the Lettered Side of the Piston Ring Face Up or Down?
1 Answers
The lettered side of the piston ring should face up. Below is an introduction to automotive piston rings: 1. Definition: A piston ring is a metal elastic ring with significant outward expansion deformation, which is assembled into a corresponding annular groove. The piston ring, undergoing reciprocating and rotational motion, relies on the pressure difference of gas or liquid to form a sealing and open-ended ring between the outer cylindrical surface of the ring and the cylinder, as well as between the ring and one side of the ring groove. It is divided into two types: compression rings and oil rings. 2. Function: The compression ring in the piston ring serves to seal the gap between the piston and the cylinder, preventing gas leakage. The oil ring functions to scrape off excess oil from the cylinder wall, preventing it from entering the combustion chamber for burning. Additionally, it ensures even distribution of oil on the cylinder wall, improving the lubrication conditions of the cylinder wall surface.