Patent ID: 8572963
Filing Date: 2013-11-05
Classification: F01D,F01N,F02B,F02C,F02F,F05D,Y02T

Abstract:
1. A supercharged internal combustion engine comprising: a motor unit including a head and an exhaust manifold, a turbocharger assembly fluid dynamically connected to said exhaust manifold, wherein said turbocharger assembly includes a turbine, a central body and a compressor, wherein: said turbocharger assembly comprises a lubrication channel for the passage of a lubricating fluid hydraulically connected to a lubrication circuit of said motor unit of said internal combustion engine, said turbine comprises a jacket, provided at least in part in a body thereof, arranged for the passage of a cooling fluid and in hydraulic communication with an inlet channel and an outlet channel hydraulically connected to a cooling circuit of said motor unit of said internal combustion engine, said inlet channel, outlet channel and lubrication channel being integrated in said turbocharger assembly in correspondence of a connection interface between said turbocharger assembly and said motor unit of said internal combustion engine said turbocharger assembly comprises a stator assembly including the body of said turbine, said central body and a body of said compressor, said central body comprises a cavity wherein a rotor assembly of said turbocharger assembly is housed, said rotor assembly comprises a first impeller rotatably mounted within the body of said turbine, a healing pack, and a second impeller rotatably mounted in the body of said compressor, wherein said first and said second impellers are connected in rotation by means of a shaft, said exhaust manifold integrally cast in said turbo charge assembly, at least part of said stator assembly is integral with said head, said jacket and said lubrication channel are provided in part in said first semi-shell and in part in said second semi-shell, wherein each portion of the jacket is hydraulically connected to a respective portion provided on the other semi-shell when the first and the second semi-shells are joined together, said bearing pack comprises a sleeve including annular grooves in hydraulic communication, by means of radial channels with an internal cavity provided in said sleeve, wherein said shaft is inserted in said internal cavity rotatably supported by a bushing, and wherein said rotor assembly is arranged for the insertion in axial direction into said turbocharger assembly.