The compression rings seal the combustion chamber, preventing high-pressure gas from leaking into the crankcase. This ensures the gas pressure pushes the piston to work efficiently, enhancing engine power and fuel economy. The oil control rings scrape off excess oil from the cylinder wall to avoid "oil burning" and retain a thin oil film to reduce frictional wear. Additionally, they assist in dissipating heat from the piston and help the piston maintain a stable movement path within the cylinder.
