What is Piston Rings | Types of Piston Rings.

 

Piston Rings- 

Piston rings are fitted into the grooves of the piston to maintain a good seal between the piston and the cylinder wall. There are three functions of the piston rings as follows : 
  1. To provide a pressure seal to prevent blow-by of burnt gases. blow-by is the name that describes the escape of burned gases from the combustion chamber, past the piston, and into the crankcase. 
  2. To form the main path for the conduction of heat from the piston crown to the cylinder walls. 
  3. To control the flow of oil to the skirt and rings themselves in adequate quantity while preventing an excessive amount from reaching the combustion chamber with consequent waste and carbonization.