Patent ID: 8360037
Filing Date: 2013-01-29
Classification: B01D,F01M

Abstract:
1. An oil separation apparatus for blow-by gas, which is connected to a crank case of an internal combustion engine, is supplied with a blow-by gas, separates oil from the blow-by gas, and supplies the blow-by gas to the internal combustion engine, the oil separation apparatus comprising: an intake housing provided with a gas inlet for the blow-by gas to be drawn therein; a plurality of cyclone, each of which is formed as a cone, is disposed about the intake housing and communicates with the intake housing through a respective intake passage and separates oil from the blow-by gas, wherein a gas exit is formed to an upper side of each cyclone for discharging the blow-by gas and an oil outlet is formed to a lower side of each cyclone for discharging the separated oil; an exhaust housing coupled to the intake housing, the exhaust housing which is provided with a gas outlet, is communicating with the gas exit through an exhaust passage connecting the gas outlet and the exhaust housing, and discharges the blow-by gas through the gas outlet; a control unit which is disposed with the intake and exhaust housing and selectively opens the intake and exhaust passages according to an intake pressure of the engine; wherein the control unit comprises; a rotating shaft rotatably disposed with the intake and exhaust housing; an intake diaphragm which is integrally connected to the rotating shaft and disposed within the intake housing, the intake diaphragm being configured to electively open the intake passages; an exhaust diaphragm which is integrally connected to the rotating shaft and disposed within the exhaust housing and rotates around the rotating shaft simultaneously with the rotating shaft and the intake diaphragm according to the intake pressure of the engine, the exhaust diaphragm being configured to electively open the exhaust passage; and a return spring which is disposed to the rotating shaft and supplies restoring force to the intake diaphragm and exhaust diaphragm.