PR-266-9920-R01 Development and Prototyping of a Variable Geometry Turbocharger

Turbochargers are used to either increase engine power output or reduce air pollutants by increasing the trapped air-to-fuel ratio. An increasing need has arisen for the turbocharger compressor to operate at an ever-increasing pressure ratio while maintaining a broad operating range. Unfortunately, the operational physics of a turbocharger limits the operating range as the pressure ratio is increased.

This project evaluates the alternatives to increase the engine operating range by using variable vanes on turbocharger compressor.