Repair manual

Oil Circulation System
14
Positive Crankcase Ventilation
One of the goals in designing this new engine was
to provide greater driver, passenger, and pedestrian
safety in the event of a collision. For instance, the more
compact design of the components above the cylinder
head cover provides more clearance between the engine
and hood. This translates to a larger crumple zone for the
dissipation of energy upon impact.
The following components were modified to achieve this
goal:
– Blow-by gas duct integrated in the cylinder crankcase
– Fine oil separator module with integrated pressure
regulating valve, non-return valve and positive
crankcase ventilation valve (PCV valve)
Valve Unit
Blow-By Line to Intake Manifold
(naturally aspirated mode)
Non-Return
Valves
Blow-By Line to Exhaust
Turbocharger (charging mode)
Pressure
Regulating
Valve
Blow-By Duct in
Cylinder Head and
Cylinder Block
Cyclone
Oil
Return
Line
PCV
Combination
Valve
Diagnostic
Channel