Patent ID: 8852443
Filing Date: 2014-10-07
Classification: B01D

Abstract:
1. A fuel filtration system of an engine, comprising: a fuel passageway that communicates fuel to the engine; and a variable restriction orifice controlling fuel flow through the fuel passageway, the variable restriction orifice is configured to be movable between first and second extreme movement positions, the first extreme movement position is configured as a fully open position at which a first non-zero fuel flow rate through the fuel passageway is provided and the second extreme movement position is configured as a fully closed position at which a second non-zero fuel flow rate through the fuel passageway is provided, wherein the first flow rate is greater than the second flow rate, the second flow rate is an amount insufficient to permit the engine to operate, and the variable restriction orifice is configured to permit fuel to flow through the fuel passageway at the second non-zero fuel flow rate when the variable restriction orifice is at the fully closed position.