PureVent

Reducing emissions from internal combustion engines has been a major environmental concern. Up to now, most of the focus has been on exhaust gases. However, crankcase gas has now come into focus as an area where further emission reductions can, and should, be made.

PureVent is a compact centrifugal oil mist separator that, when connected to medium-speed diesel engines, removes 98–99.9% of oil from crankcase gases. Recovered oil can then be re-circulated to the oil sump and used again for engine lubrication.
 

The PureVent centrifugal separator consists of a disc stack made of composite lightweight polymer material,which is enclosed in an aluminium housing. Connected to this is an electric motor that drives the disc stack. A frequency converter unit controls the separator motor.

Uncleaned crankcase gas enters through the inlet at the bottom of the unit and passes into the rotating disc stack.The oil mist is separated in the discstack; the oil drops are collected on the separator housing inner wall and drained at the oil outlet.

For gas engines, the cleaned air can be re-circulated to the engine turbocharger. This closed system enhances engine performance and safeguards the engine since it eliminates risk of turbocharger fouling or oil accumulation in the intercooler. Most importantly, a closed crankcase ventilation system eliminates all emissions of crankcase gas