A SYSTEM FOR VENTILATION OF A CRANKCASE

The invention provides a system for ventilation of a crankcase () of an internal combustion engine, the system comprising—an air inlet guide () adapted to guide air to at least one cylinder () of the engine,—a closed circuit conduit () for guiding crankcase gas from the crankcase () to the air inlet guide (),—wherein the system comprises gas detection means () positioned in the air inlet guide (), for detecting crankcase gas in the air inlet guide.