Apparatus, system, and method for dispersing heat within a particulate filter

A method for providing a robust emissions compliant power plant for an application having an internal combustion engine, the method comprising:

• installing a heat-dispersing particulate filter downstream of the internal combustion engine;
• wherein the heat-dispersing particulate filter comprises a plurality of channels through which an exhaust stream is flowable, wherein the plurality of channels comprises inlet channels each being open at an inlet end of the filter and closed at an outlet end of the filter and outlet channels each being closed at the inlet end of the filter and open at the outlet end of the filter, and wherein the closed outlet end of each of the inlet channels is closed via an end cap, the heat-dispersing particulate filter further comprising a plurality of thermal conduits each positioned within a respective one of the plurality of inlet channels, each thermal conduit having a cross-sectional area less than a cross-sectional area of the respective inlet channel such that the thermal conduits do not prevent exhaust flow through the inlet channels, and wherein the thermal conduits are thermally coupled to the end cap closing the respective inlet channel to disperse heat from a high risk portion of the particulate filter to an ambient environment;
• and
• treating an exhaust stream from the internal combustion engine with the engine heat-dispersing particulate filter to remove particulates from the exhaust stream.

An apparatus for thermal management within a particulate filter, the apparatus comprising:

• a heat dispersion device configured to disperse heat in a high risk portion of a particulate filter having a plurality of channels through which an exhaust stream is flowable, the high risk portion being axially positioned from a back of the particulate filter forward to at least the rear one-sixth of the particulate filter, and the heat dispersion device comprising at least one member selected from the group consisting of a time dispersion device, a component dispersion device, a molecular energy dispersion device, and a space dispersion device;
• wherein the time dispersion device comprises a precious metal catalyst reduction in a washcoat of the high risk portion of the particulate filter configured to reduce a rate of soot consumption during a high temperature regeneration event;
• wherein the component dispersion device comprises a washcoat comprising zero percent catalyst of the high risk portion of the particulate filter, and a catalytic component downstream of the particulate filter configured to convert carbon monoxide to carbon dioxide;
• wherein the molecular energy dispersion device comprises a particulate filter washcoat of the high risk portion of the particulate filter comprising a heat sink material;
• and
• wherein the space dispersion device comprises a plurality of thermal conduits thermally connecting the high risk portion of the particulate filter with a plurality of particulate filter channel end caps, the plurality of thermal conduits each being positioned within a respective one of the plurality of channels and having a thermal conductivity greater than the thermal conductivity of the particulate filter substrate, wherein each thermal conduit extends axially along at least the portion of the respective channel within the high risk portion of the particulate filter.

A system for providing a robust emissions compliant power plant for an application, the system comprising:

• an internal combustion engine installed in an application;
• an aftertreatment system configured to treat an exhaust stream from the internal combustion engine, the aftertreatment system comprising a heat-dispersing particulate filter comprising a plurality of channels through which an exhaust stream is flowable, a space dispersion device, and a component dispersion device, the particulate filter defining a high risk portion, wherein the plurality of channels comprises inlet channels each being open at an inlet end of the filter and closed at an outlet end of the filter and outlet channels each being closed at the inlet end of the filter and open at the outlet end of the filter, wherein the closed outlet end of each of the inlet channels is closed via an end cap;
• wherein the component dispersion device comprises a washcoat comprising zero percent catalyst of at least a first fraction of the high risk portion of the particulate filter;
• and
• wherein the space dispersion device comprises a plurality of thermal conduits each positioned within a respective one of the plurality of inlet channels and having a cross-sectional area less than a cross-sectional area of the respective inlet channel such that the thermal conduits do not prevent exhaust flow through the inlet channels, the plurality of thermal conduits each being thermally coupled to the end cap closing the respective inlet channel to thermally connect the high risk portion of the particulate filter with the plurality of particulate filter inlet channel end caps, the plurality of thermal conduits having a thermal conductivity greater than the thermal conductivity of the particulate filter substrate.