The Exhaust Coupling Piston Ring Expander is a device that harnesses the energy from the exhaust gases of an internal combustion engine or any other heat source to generate additional power or provide mechanical work. It works on the principle of converting the thermal energy of the exhaust gases into rotational mechanical energy.Attributes: • Reduced fuel consumption.•It helps improve overall system efficiency. Applications: The Exhaust Coupling Piston Ring Expander used in waste heat recovery systems.