초록 ▼

An engine crankcase bypass system includes a scavenging mechanism for the collection and removal of oil entrained in engine bypass gases that include unburned gasoline fuel and water vapors. The improved bypass system, designed to replace a standard PCV (positive crankcase ventilation) system, sense

An engine crankcase bypass system includes a scavenging mechanism for the collection and removal of oil entrained in engine bypass gases that include unburned gasoline fuel and water vapors. The improved bypass system, designed to replace a standard PCV (positive crankcase ventilation) system, senses manifold and crankcase vacuum pressures, and via utilization of either an electronic or mechanical valve provides continuous adjustments of bypass gas flows for the maintenance of a constant gas flow sufficient to exceed normal engine bypass flow rates. A deflector system positioned in a flow stream is designed to extract and separate oil vapor from unburned gasoline fuel and water vapors entrained in the bypass gases. The oil is collected and drained to a temporary reservoir for subsequent re-entry into the oil sump of the engine. The fuel and water vapors are immediately returned to the intake manifold of the engine for reburning of the fuel.

대표청구항 ▼

1. 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 p

1. 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.