Electrical specifications (page 3 of 3)

The system controls crankcase emissions made up air, fuel and burnt gas mixtures that leak through piston ring seals in addition to lubricant oil vapours by recirculating them to the intake.

Vent gases flow through cycle separator (1) and lose part of their dissolved oil content. This drops back down into the sump in the form of droplets. The remaining gases reach intake sleeve (5) through pipe (3). This contains a flame trap (2) to prevent flame flashing back and setting light to the crankcase.

A second pipe (6) connected to inlet manifold downstream of the throttle valve ensures that when the engine is idling, crankcase vapours are drawn up by the vacuum in the intake manifold.