Internal combustion engine exhaust modification system

A method of removing particulate matter and liquid droplets from exhaust emissions from an internal combustion engine, the method comprising:

• (a) providing a housing defined by a housing axis and extending between an inlet end, at which the exhaust emissions are received in the housing via an inlet end opening that is coaxial with the housing axis, and an outlet end, at which the modified exhaust emissions exit the housing;
• (b) providing an impeller rotatably mounted in the housing, the impeller being rotatable by the exhaust emissions directed via the inlet opening into the housing about an axis of the impeller that is coaxial with the housing axis, for drawing the exhaust emissions out of the engine and for accelerating particulate matter and liquid droplets in the exhaust emissions outwardly from the axis;
• (c) providing a filter subassembly located in the housing downstream from the impeller, the filter subassembly comprising a support structure receivable in the housing and at least one filter element being positionable in the support structure when the support structure is in the housing, the filter subassembly being positioned downstream relative to the impeller, the filter subassembly being configured to collect at least part of the particulate matter and the liquid droplets in the exhaust emissions, for removing the at least part of the particulate matter and the liquid droplets from the exhaust emissions to form the exhaust emissions into the modified exhaust emissions, the filter subassembly being permeable to the modified exhaust emissions;
• (d) directing the exhaust emissions into the inlet end opening, to rotate the impeller about the axis thereof, for accelerating the at least part of the particulate matter and the liquid droplets in the exhaust emissions moving past the impeller outwardly from the axis, to accumulate the at least part of the particulate matter and the liquid droplets on a peripheral region of said at least one filter element;
• (e) providing a conduit extending between an inner end thereof positioned to direct air exiting the conduit therethrough into the housing at an exit location that is at least partially upstream to the filter subassembly relative to the impeller, and an outer end thereof positioned distal to the filter subassembly, the air directed through the conduit being cooler than the exhaust emissions;
• (f) providing a funnel subassembly comprising a funnel body extending between an output end thereof that is connected with the outer end of the conduit, and an input end thereof that is positioned distal to the outer end of the conduit, the funnel body being configured for collecting the cooler air at the input end and channeling the cooler air into the outer end of the conduit;
• (g) with the cooler air directed through the conduit, cooling said at least one filter element to a temperature that is less than a temperature of the exhaust emissions, for collecting the particulate matter and the liquid droplets on said at least one filter element;
• (h) permitting the particulate matter and the liquid droplets to accumulate on the peripheral region of said at least one filter element;
• (i) removing said at least one filter element from the support structure;
• (j) after removal thereof, cleaning said at least one filter element, for removal of the particulate matter and the liquid droplets from the peripheral region thereof;
• and
• (k) subsequently positioning said at least one filter element in the support structure.