A turbocharged engine and a method of making same

摘要

A turbocharger for an engine 1 is disclosed having a compressor 10 and a turbine 20 mounted remotely from one another on opposite sides of a engine block 2. A drive shaft 15 connects the compressor 10 to the turbine 20. The drive shaft 15 is arranged so that it extends transversely across the engine block 2 and is positioned above and at substantially ninety degrees to an axis of rotation of a crankshaft 12. By remotely locating the compressor 10 from the turbine 20 the transfer of heat from the turbine 20 to the compressor is greatly reduced thereby reducing heating of the intake charge air and allowing the use of lower cost materials for the compressor 10. In the case of a crossflow engine the use of such a split turbocharger arrangement allows the compressor 10 to be located very close to the charge air inlet 6 and the turbine 20 to be located very close to the exhaust 7.