Process and system for the regeneration of particulate filter traps

A system for the regeneration of at least a pair of side-by-side particulate filter traps employed for purifying the exhaust gas of an internal combustion engine, particularly a motor vehicle diesel engine, by oxidation of particulates collected in the traps, comprising a housing covering an inlet end of the traps, the housing having a transverse inflow conduit for inletting exhaust gas to be purified transversely to the traps, burner means including a pair of fuel burners respectively associated with the traps for directing first and second flame jets at high velocity flow, for a short duration, from the nozzles transversely to the inflow direction of the exhaust gas and directly into the traps associated therewith, said burner means including means for selectively actuating said burners such that said first flame jet initiates combustion of the particulates collected in an associated one of the traps and simultaneously diverts the exhaust gas to flow into the other of the traps.

A process for the regeneration of one particular filter trap employed for purifying the exhaust gas of an internal combustion engine, particularly a motor vehicle diesel engine, by oxidation of particulates collected in the trap, combustion of the particulates being carried out during engine operation by at least two fuel burners, respectively associated with areas of the trap, comprising the steps of regenerating one of the trap areas by directing a flame jet from the corresponding burner at high velocity flow for a short duration, transversely to the inflow direction of the exhaust gas to be purified, directly into one of the trap areas associated therewith without mixing with the exhaust gas flow, diverting the exhaust gas, solely by the flame jet, to flow into the other trap area from the vicinity of the one burner, and simultaneously initiating combustion by the flame jet, of the particualtes collected in the corresponding trap area.

A system for the regeneration of one particulate filter trap employed for purifying the exhaust gas of an internal combustion engine, particularly a motor vehicle diesel engine, by oxidation of particulates collected in the trap, comprising a housing covering an inlet end of the trap, the housing having a transverse inflow conduit for inletting exhaust gas to be purified transversely to the trap, burner means including at least a pair of fuel burners respectively associated with trap areas for directing first and second flame jets at high velocity flow for a short duration, from the nozzles transversely to the inflow direction of the exhaust gas and directly into the trap areas associated therewith, said burner means including means for selectively actuating said burners such that said first flame jet initiates combustion of the particulates collected in an associated area of the trap and simultaneously diverts the exhaust gas to flow into the other area of the trap.