Patent ID: 8602008

Claim:
An engine assembly comprising: an engine defining a combustion chamber and a crankcase volume; an intake assembly including an air cleaner assembly, a throttle, and an intake manifold disposed in a series arrangement, the intake manifold being fluidly coupled with the combustion chamber, and wherein the throttle is disposed between the air cleaner assembly and the intake manifold; a first air-oil separator defining a first separator volume, and a second air-oil separator defining a second separator volume, each of the first and second separator volumes being respectively configured to extract oil from air flowing through the volume; a first conduit fluidly coupling the crankcase with the first separator volume; a second conduit fluidly coupling the intake manifold with the first separator volume; a third conduit fluidly coupling the crankcase with the second separator volume; a fourth conduit fluidly coupling the air cleaner assembly with the second separator volume; a fifth conduit fluidly coupling the air cleaner assembly with the first separator volume; and wherein the fifth conduit includes a check valve configured to inhibit fluid flow through the fifth conduit in a direction away from the air cleaner assembly.