AIR FILTERING DEVICE AT INPUT OF INTERNAL COMBUSTION ENGINE WITH VENTILATION DEVICE Russian patent published in 2015 - IPC F02C7/52 

FIELD: ventilation.

SUBSTANCE: air filtering device at input of internal combustion engine contains at least one filtering element with input for the treated air, first output of the cleaned air in the engine direction, and second air output to the environment, ventilation device ensuring the air exhaust starting from the second air output. The ventilation device contains fan impeller installed with the possibility of rotation in the crankcase, and driven by the turbine that is driven by the gas flow exhausted from the engine. Turbine and fan impeller are located concentrically relatively to each other. The crankcase contains a cylindrical shell, first wall that crates bend with radial input, that is connected with the cylindrical shell, and second wall, that creates bend with radial input, that connects with the cylindrical wall, having radius exceeding radius of the said cylindrical shell. The round internal surface of the cylindrical shell creates the first ring channel of the axial air flow. The round external surface of the cylindrical shell, and the first and the second walls create the second channel for the second air flow, at that the second ring channel has the radial input and axial output. The first air flow suctions the air from the filter internal part, and the second air flow is the gas flow exhausted from the engine to drive the fan impeller by the turbine.

EFFECT: reduced weight of the air filtering device, its price and easy repair.

6 cl, 4 dwg