Patent ID: 8607767

Claim:
A device for ventilating a crankcase of an internal combustion engine, comprising: a ventilation line including an oil mist separator, the ventilation line leading from the crankcase to a suction line of the internal combustion engine, in the path of which the oil mist separator for separation of the oil parts from the blow-by gases containing the oil mist from the crankcase is arranged; a pump arranged downstream of the oil mist separator for producing a negative suction pressure; and at least one drive and a fan wheel connected to the pump; the oil mist separator and the pump are connected modules, wherein the pump is arranged together with the oil mist separator in a housing formed in at least one part, the oil mist separator is formed as a switchable oil mist separator comprising a vacuum valve, and wherein the oil mist separator comprises an impactor, the oil mist separator formed as the impactor comprises flow nozzles and a deflector wall generally opposite thereto.