Exhaust component mounting structure

An exhaust after-treatment system, comprising:

• an first exhaust after-treatment element section including a first array of exhaust treatment components, the first exhaust after-treatment element section including a first load-bearing flange and a first non-load-bearing flange;
• a first mounting structure fixed to the first load-bearing flange for supporting the first exhaust after-treatment element section;
• an second exhaust after-treatment element section including a second array of exhaust treatment components, the second exhaust after-treatment element section including an inlet flange removably coupled to the first non-load-bearing flange, an outlet flange, and a mid-plane flange located between the inlet flange and the outlet flange;
• a second mounting structure fixed to the mid-plane flange for supporting the second exhaust after-treatment element section;
• a third exhaust after-treatment element section including a third array of exhaust treatment components, the third exhaust after-treatment element section including a third non-load-bearing flange removably coupled to the outlet flange, and a load-bearing surface;
• and
• a third mounting structure fixed to the load-bearing surface for supporting the third exhaust after-treatment element section.

An exhaust after-treatment system, comprising:

• an exhaust inlet and an exhaust outlet;
• an array of exhaust treatment components disposed in a housing, the housing including a first connection flange securing the housing to the inlet, second connection flange securing the housing to the outlet, and a third flange disposed on the housing at a position between the first flange and the second flange;
• and
• a mounting device secured to the third flange that independently supports the housing relative to the inlet and the outlet.