To prevent fuel, air and combustion gases from escaping.
Short and simple.
Compression rings are made of cast iron.
Compression rings are designed to seal the combustion chamber in an internal combustion engine, preventing gases from escaping and ensuring optimal pressure during the combustion process. They also help control oil consumption by preventing oil from entering the combustion chamber and reducing emissions. Additionally, compression rings contribute to the overall efficiency and performance of the engine by maintaining proper cylinder pressure and improving fuel efficiency.
Normal piston have 2 compression rings and a 3 piece oil ring. Some aftermarket rings have a 2 piece zero-zap second compression ring to reduce blow-by.
the sole purpose of compression sports wear is mainly for protection and if it is cold, WARMTH.
The purpose of chocolate rings is to wear the ring on your finger and eat it until it is all gone. There really isn't a point or purpose of chocolate rings.
There are brass ones and nylon ones.
loss of power
2 compression rings and one oil control ( helps scrap excess oil off cylinder walls)
If you're getting gasoline in the oil, then you have bad piston rings that are allowing gases into the crankcase. You can find which piston(s) have bad rings by doing a compression test; a cylinder with bad rings will have lower compression.
Compression blowby is air, fuel, and exhaust gasses slipping past the piston rings into the crankcase.
You don't repair compression rings you replace them.
It is the leakage of compression gasses past the piston rings.