Patent ID: 6925993

Claim:
An apparatus for cleaning of crankcase gas coming from an internal combustion engine, said apparatus comprising a housing delimiting a separation chamber, a centrifugal rotor that is arranged for cleaning of said crankcase gas, is rotatable about a substantially vertical rotational axis and is supported by the housing in the separation chamber, a drive shaft for rotation of the centrifugal rotor, said drive shaft extending downwardly from the centrifugal rotor through a bottom in the separation chamber and into a drive chamber situated below said bottom, a turbine wheel carried by said drive shaft in the drive chamber and a nozzle that is arranged to receive pressurised lubricating oil from the combustion engine and to direct the oil towards the turbine wheel for rotation thereof and, thereby, of the centrifugal rotor, wherein the apparatus also comprises an adapter element that is formed such that it is mountable onto the combustion engine and arranged to be coupled releasably to said housing, an abutment surface on the adapter element is arranged to abut against a corresponding abutment surface on the combustion engine and has a drive oil opening that is formed and placed to receive pressurised lubricating oil from a supply opening in the abutment surface of the combustion engine and a return oil opening that is formed and placed to return to a receiving opening in the abutment surface of the combustion engine lubricating oil having been used for driving said turbine wheel, and the adapter element delimits a drive oil passage, that connects the drive oil opening with said nozzle, and a return oil passage connecting said drive chamber with the return oil opening.