Patent ID: 8342160

Claim:
An engine air management system for an internal combustion engine generating blowby gas in a crankcase containing engine oil and oil aerosol, said system comprising a combined crankcase ventilation filter and air cleaner comprising an air-oil separator having an inlet receiving blowby gas and oil aerosol from said crankcase, and having an air outlet discharging clean blowby gas, and an oil outlet discharging scavenged separated oil, said system further comprising a combustion air intake supplying combustion air to said engine, said combustion air intake including an air filter supplying clean combustion air to said engine, wherein said air outlet of said air-oil separator supplies clean blowby gas to said combustion air intake, said combined crankcase ventilation and air filter comprising a housing comprising an axially extending duct, said air-oil separator comprising an annular coalescer filter having a hollow interior extending axially in said duct, said blowby gas flowing primarily in a radial direction through said annular coalescer filter and becoming clean blowby gas and joining said combustion air in said hollow interior radially inwardly of said annular coalescer filter.