Patent ID: 6435170
Filing Date: 2002-08-20
Classification: F01M,F02B,F02M,Y02T

Abstract:
An engine crankcase bypass system comprising:a) a scavenging mechanism adapted for collection and removal of oil from an engine bypass gas flow stream, said mechanism adapted to effectively remove said oil from entrained unburned fuel and water vapors in said flow stream during entire operating performance range of said engine; b) sensors for measuring at least engine intake manifold and crankcase vacuum pressures; c) a modulating gas flow valve responsive to said sensor measurements of pressures to control flow stream volume of said bypass gases, said valve being adapted to provide continuous adjustments of bypass gas flows through said crankcase to provide a constant bypass gas flow rate; and d) a deflector system disposed directly within said flow stream and adapted to extract and separate oil vapor from said entrained unburned fuel and water vapors in said constant rate flow stream.