Patent ID: 8695339

Claim:
A flow control system, comprising: an engine having an air-oil separator and an intake manifold, wherein the air-oil separator is disposed for receiving a flow of blowby gas from a crankcase of the engine and is configured for separating oil droplets and oil mist from a the flow of blowby gas; a turbocharger having an air inlet and an air outlet, wherein the air outlet is fluidly connected to the intake manifold of the engine; a positive crankcase ventilation (PCV) vent line having a first end fluidly connected to the air-oil separator and a second end fluidly connected to the air inlet of the turbocharger, wherein the PCV vent line delivers the flow of blowby gas from the air-oil separator to the air inlet of the turbocharger; and a flow regulating device located in the PCV vent line, wherein the flow regulating device is configured to selectively limit the flow of blowby gas from the air-oil separator to the air inlet of the turbocharger such that a predefined limit for negative pressure within the crankcase is not exceeded when the engine is operated in a boosted condition.