Abstract: A crankcase ventilation system (1) is provided. The system comprises a housing (10), a disc stack separator (20) arranged within the housing which comprises a chamber (21), and a rotor (22). The rotor comprises an oil separating element (23) arranged within the chamber and spaced from one or more walls of the chamber, a shaft (24) configured to rotatably mount the oil separating element. The disc stack separator further comprises a first gas inlet (41) and a first gas outlet (42). The system further comprises a filter element (30) comprising a second gas inlet (43), a second gas outlet (44), and a filter (31) arranged between the second gas inlet and the second gas outlet. The first gas inlet is configured to be connected to a crankcase blow-by outlet of the ICE, and the first gas outlet is connected to the second gas inlet.

Abstract: The present invention relates to a fuel cell stack arrangement (1) comprising a fuel cell stack (3) comprising a plurality of fuel cells (3?). Each fuel cell (3?) comprises an anode side (4) comprising a fuel inlet (5) and a fuel outlet (6), a cathode side (7) comprising an air inlet (8) and an air outlet (9), and an electrolyte (24) arranged between the anode side (4) and the cathode side (7). The fuel cell stack arrangement (1) further comprises a cathode air intake (10) arranged upstream from the air inlet (8), a cathode air compressor (11) arranged downstream from the cathode air intake (10) and a hydrogen gas storage tank (12) arranged upstream from the fuel inlet (5). The fuel cell stack arrangement (1) further comprises a first separating unit (13) comprising at least one disc stack separator (14) and being arranged between the cathode air intake (10) and the air inlet (8).

Abstract: A crankcase ventilation system (1) is provided. The system comprises a housing (10), a disc stack separator (20) arranged within the housing which comprises a chamber (21), and a rotor (22). The rotor comprises an oil separating element (23) arranged within the chamber and spaced from one or more walls of the chamber, a shaft (24) configured to rotatably mount the oil separating element. The disc stack separator further comprises a first gas inlet (41) and a first gas outlet (42). The system further comprises a filter element (30) comprising a second gas inlet (43), a second gas outlet (44), and a filter (31) arranged between the second gas inlet and the second gas outlet. The first gas inlet is configured to be connected to a crankcase blow-by outlet of the ICE, and the first gas outlet is connected to the second gas inlet.

Abstract: Method and apparatus for cleaning an air flow from particles, such as bacteria and other microorganisms. According to the invention, an aerosol of liquid droplets is generated in the air flow, whereafter the liquid droplets and the air flow are mixed and the droplets and particles are centrifugally separated from the air flow.

Abstract: A turbine having a turbine wheel, as used for example as a drive for active oil separators, and to a liquid separator having such a turbine is described.