Patent ID: 6365108
Filing Date: 2002-04-02
Classification: B01D,G01N

Abstract:
A siloxane filter system for protecting an oxygen probe utilized in an internal combustion engine having an exhaust duct and being fueled by landfill gases, the siloxane filter system comprising a fiber filter removably disposed in a housing, the housing having an outer cylindrical portion disposed between two end plates bored to receive the outer cylindrical portion, one of the end plates having four bores the largest bore receiving the outer cylindrical portion the second largest bore having a diameter generally equal to the inside diameter of the outer cylindrical portion and the next smaller bore having a diameter that receives an inner cylindrical portion that does not extend to the other end plate, an inlet port and an outlet port disposed in fluid communication with the exhaust duct in such a manner as to cause exhaust gases to flow through the housing and filter, the outlet port being disposed in fluid communication with the second largest bore and the inlet port being so disposed in a side of the one end plate to cause the influent exhaust gasses to swirl in the second largest bore, the other end plate having a central threaded opening for receiving the oxygen probe and the fiber filter being disposed in the housing between the inner and outer cylindrical members filtering the exhaust gases of siloxane prior to contacting the oxygen probe, whereby siloxane in the exhaust gases is deposited on the fibers of the filter and essentially siloxane free gases pass over the oxygen probe, extending its useful life.