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The crankcase ventilation for the standard
version turbo-engines corresponds to that of the
naturally aspirated engine.
l-lowever on the turbo-engines, after removal of
the engine oil, the blow-by gasses flow from the
cylinder head cover to the intake hose.
Naturally aspirated and turbo-engines with exhaust gas recirculation
a
Crankcase ventilation on engines with exhaust gas recirculation
Engine 602.91
126
127
Return pipe
140
141
Pressure control valve
a
Vent hole, dia. 3 mm
A
Blow-by gasses
Fresh air
01.10 - 040/3
EXIT
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