FIELD: engines.
SUBSTANCE: invention may be used in diesel engines. Diesel particulate filter comprises a wall-flow filter substrate and catalyst composition (44). Wall-flow filter substrate has a mean pore size, inlet side (30), outlet side (32), and a porous interior between inlet and outlet sides (30) and (32). Catalyst composition is deposited from the outlet side of the substrate. Catalyst composition has a d50 particle size distribution. Said d50 particle size distribution is greater than or equal to the mean pore size divided by 4.9. Inlet side (30) is substantially free of catalytic coating (44). System for treating exhaust gas of combustion of poor fuel and a method for reducing soot in exhaust gas of combustion of poor fuel are disclosed.
EFFECT: technical result is reducing backpressure of the filter.
20 cl, 5 dwg, 2 tbl
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