Nozzle rings are critical. In your powerplant turbochargers, they directly convert exhaust gas energy into kinetic energy and power. Dirty nozzle rings reduce fuel and emissions efficiency and demand regular cleaning.

The diffuser's function in turbocharged engines accelerates the exhaust gas flow. The diffuser also distributes it evenly in the turbine wheel. Essentially, the diffuser has three roles: Bring in the air smoothly into the engine.