A turbocharger on a diesel locomotive, is a device used to generate more horsepower from the locomotive's diesel engine, also known as the prime mover. It uses the engine's hot exhaust gases to drive a compressor which forces more air into the intake manifold.
A diesel locomotive turbocharger.
An EMD GP30, a turbocharged diesel locomotive.
Trivia[]
The EMD SD24 and GP20 were EMDs first six-axle and four-axle turbocharged diesel locomotives.