Patent ID: 6824743
Filing Date: 2004-11-30
Classification: F01N,Y10S

Abstract:
An exhaust aftertreatment filter comprising a housing extending axially along an axis between distally opposite first and second ends, a first port at said first end of said housing, a second port also at said first end of said housing, one of said first and second ports being an inlet, the other of said first and second ports being an outlet, said housing having an intermediate section between said distally opposite ends, said intermediate section having a given cross-sectional area A1 along a sectional plane transverse to said axis, an exhaust filter element in said intermediate section and entirely filling said given cross-sectional area A1 except for a smaller cut-out in said exhaust filter element of cross-sectional area A2, said exhaust filter element having a cross-sectional area A3=A1âˆ’A2, a transfer tube extending through said cut-out and communicating with said second port, said first port communicating with said exhaust filter element, wherein exhaust flows axially through said exhaust filter element between first and second distally opposite sides of said exhaust filter element, said first side facing said first end of said housing, said second side facing said second end of said housing, wherein exhaust flows axially through said exhaust filter element in one axial direction, wherein exhaust flows axially through said transfer tube through said cut-out in the opposite axial direction, wherein:said first side of said exhaust filter element communicates with said first port; said second end of said housing is closed, and exhaust flow reverses axial direction at said second end of said housing; said second side of said exhaust filter element communicates through said flow reversal and said transfer tube through said cut-out with said second port; said second end of said housing is closed by a removable cover permitting inspection and removal of said exhaust filter element from said housing without disassembling said inlet from said housing and without disassembling said outlet from said housing.