Abstract: A turbocharged diesel engine having a two stage turbocharger assembly is described. The assembly includes two low pressure turbochargers coupled in parallel and arranged in series with a single high pressure turbocharger. This allows all turbochargers to be of comparable dimensions and allows for interchangeability of parts between low pressure and high pressure turbochargers. The turbochargers may be mounted on an enclosure which encloses the turbines and the exhaust gas ductwork and which communicates with the exhaust pipe to insure that any leaking exhaust gas escapes to the atmosphere via the exhaust pipe.

Abstract: A turbocharged diesel engine is described. The engine has a two stage turbocharger assembly including two low pressure turbochargers coupled in parallel and arranged in series with a single high pressure turbocharger. This allows all turbochargers to be of comparable dimensions for inter-changeability of parts. The turbochargers may be mounted on an enclosure which encloses the turbines and the exhaust gas duckwork which communicates with the exhaust pipe to insure that any leaking exhaust gas escapes to the atmosphere via the exhaust pipe. A cartridge is also described which contains the moving parts and which can be removed without disturbing the turbine housing.