Patent ID: 7269942

Claim:
A wall-flow particulate trap system comprising: a. at least one wall flow particulate trap having porous walls and having an inlet and an outlet, said at least one wall flow particulate trap disposed in an engine exhaust gas line to filter engine exhaust gas and provide filtered exhaust gas; b. at least one mode valve assembly offset from said inlet of said at least one wall flow particulate trap and having a first and regeneration position wherein when in the first position exhaust gas flows through the assembly to a portion of the at least one wall flow particulate trap and when in the regeneration position exhaust gas flow is restricted through the assembly and a reverse flow of pressurized filtered exhaust gas flows back through a portion of the porous walls of the at least one wall flow particulate trap and through the assembly to regenerate the portion of the at least one wall-flow particulate trap; c. a relief valve assembly downstream from said outlet of said at least one wall flow particulate trap, and apparatus which remotely actuates the relief valve to a regeneration position to restrict flow of the filtered exhaust gas and raise the pressure thereof to a pre-selected level to thereby provide said pressurized filtered exhaust gas; d. at least one duct rotor intermediate said at least one wall flow particulate trap and said at least one mode valve assembly, said at least one duct rotor having a first end and a second end, said second end of said at least one duct rotor in operative communication with said at least one mode valve assembly and at least a portion of said first end of said at least one duct rotor in fluid communication with said inlet of said at least one wall flow particulate trap; and e. at least one rotor drive in driving connection with said at least one duct rotor such that said portion of said first end in fluid communication with said inlet is changeable; and f. an apparatus which actuates the mode valve assembly between the first and regeneration positions.