Patent ID: 7866304

Claim:
An engine assembly comprising: an engine block defining a cylinder bore having a piston disposed therein; a cylinder head coupled to the engine block and defining an air inlet in fluid communication with the cylinder bore; and a crankcase ventilation assembly in fluid communication with the engine block and the air inlet, the crankcase ventilation assembly including fuel separator assembly having: a condensing unit including a gas region, a liquid retaining region, a gas inlet, a first gas outlet, and a liquid outlet, the gas inlet in fluid communication with the gas region and a gas flow from the engine block including fuel vapor, the condensing unit converting the fuel vapor to liquid fuel based on a first temperature of the condensing unit, the first gas outlet being in fluid communication with the air inlet and providing a remainder of the gas flow thereto, and the fluid region storing the liquid fuel; and a vaporizing unit including a liquid inlet and a second gas outlet, the liquid inlet being in fluid communication with the liquid outlet of the condensing unit and receiving the liquid fuel from the condensing unit, the vaporizing unit converting the liquid fuel to fuel vapor based on a second temperature of the vaporizing unit, the second gas outlet providing the fuel vapor to the air inlet.