Patent ID: 9593605
Date: 2017-03-14
CPC Classifications: F01M

Claim:
1. A method, comprising: driving crankcase ventilation gas flow through an engine crankcase from a crankcase fresh air inlet to a crankcase fresh air outlet and then to an engine intake upstream of a turbocharger compressor via crankcase pressure pulsations, while restricting crankcase ventilation gas backflow from the outlet to the inlet via a unidirectional check valve, the inlet coupled to the engine intake upstream of the turbocharger compressor, the compressor arranged upstream of a throttle, the inlet further coupled to a pulsation-restricted zone of the crankcase, and the outlet coupled to the engine intake via only a single conduit, and the single conduit couples the outlet to the engine intake upstream of the turbocharger compressor, the outlet further coupled to a pulsation zone of the crankcase, and the unidirectional check valve disposed in the outlet upstream of the single conduit.