A fibrous filter element for trapping diesel engine exhaust particulates comprises a mass of {HEAD ~ coiled wire} of {TAIL ~ flattened cross section} compacted into a small passage gas pervious body 
A fibrous filter element for trapping diesel engine exhaust particulates comprises a mass of { HEAD ~ coiled wire } of { TAIL ~ flattened cross section } compacted into a small passage gas pervious body
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH