Filter arrangement for removal of soot particles from the exhaust gases of an internal combustion engine

A filter arrangement for removal of soot particles from the exhaust gases of an internal combustion engine, comprising:

• a filter body comprising a porous filter material and having a plurality of filter ducts arranged in a honey-comb pattern, each filter duct having an inlet opening for the intake of the exhaust gases;
• a resistance heating element arranged in a region of each inlet opening and having a series of loops, each loop having a flank and each loop projecting into a respective filter duct, said resistance heating element further having a lead-in line and a lead-out line connection to a current supply;
• and
• connecting means for form lockingly connecting a wall of a respective filter duct and a respective heating element loop together, said connecting means comprising a projection on each said flank and a corresponding recess receiving a respective projection on a respective filter duct.

A filter arrangement for removal of soot particles from the exhaust gases of an internal combustion engine, comprising:

• a filter body comprising a porous filter material and having a plurality of filter ducts arranged in a honey-comb pattern, each filter duct having an inlet opening for the intake of the exhaust gases;
• a resistance heating element arranged in a region of each inlet opening and having a series of loops, each loop projecting into a respective filter duct, said resistance heating element further having a lead-in line and a lead-out line connection to a current supply;
• and
• connecting means for form lockingly connecting a wall of a respective filter duct and a respective heating element loop together, said connecting means comprising a plurality of barbs attached to each loop for impeding an outward movement of said loop.

A filter arrangement for removal of soot particles from the exhaust gases of an internal combustion engine, comprising:

• a filter body comprising a porous filter material and having a plurality of filter ducts arranged in a honey-comb pattern, each filter duct having an inlet opening for the intake of the exhaust gases;
• a resistance heating element arranged in a region of each inlet opening and having a series of loops, each loop having projections and each loop projecting into a respective filter duct, said resistance heating element further having a lead-in line and a lead-out line connection to a current supply;
• and
• connecting means for form lockingly connecting a wall of a respective filter duct and a respective heating element loop together, said connecting means comprising heating means for heating said filter duct and said loops to a melting temperature of said porous material to fuse the projections with said porous material.