Aftertreatment system with multiple dosing modules

An aftertreatment system comprising:

• a decomposition chamber comprising a decomposition chamber inlet, the decomposition chamber centered on a decomposition chamber central axis and bisected by a decomposition chamber vertical axis orthogonal to the decomposition chamber central axis;
• a first dosing module coupled to the decomposition chamber and configured to receive reductant, the first dosing module separated from the decomposition chamber inlet by a first distance along the decomposition chamber central axis;
• a second dosing module coupled to the decomposition chamber and configured to receive reductant, the second dosing module separated from the decomposition chamber inlet by a second distance along the decomposition chamber central axis, the second distance being different from the first distance;
• and
• a controller communicatively coupled to the first dosing module and the second dosing module, the controller configured to selectively activate and deactivate the first dosing module and the second dosing module;
• wherein the first dosing module is configured to provide reductant into the decomposition chamber along a first trajectory when activated;
• wherein the second dosing module is configured to provide reductant into the decomposition chamber along a second trajectory when activated;
• wherein the first dosing module and the second dosing module are coupled to the decomposition chamber such that:
• (i) the first trajectory and the second trajectory intersect within the decomposition chamber or (ii) the first trajectory and the second trajectory form offset swirls that do not intersect within the decomposition chamber.

An aftertreatment system comprising:

• a decomposition chamber;
• a first dosing module coupled to the decomposition chamber and configured to receive reductant;
• a second dosing module coupled to the decomposition chamber and configured to receive reductant;
• and
• a controller communicatively coupled to the first dosing module and the second dosing module, the controller configured to selectively activate and deactivate the first dosing module and the second dosing module;
• wherein the first dosing module is configured to provide reductant into the decomposition chamber and is coupled to the decomposition chamber such that reductant provided from the first dosing module is provided along a first trajectory within the decomposition chamber and dispersed into exhaust gases within the decomposition chamber along the first trajectory;
• wherein the second dosing module is configured to provide reductant into the decomposition chamber and is coupled to the decomposition chamber such that reductant provided from the second dosing module is provided along a second trajectory within the decomposition chamber and dispersed into exhaust gases within the decomposition chamber along the second trajectory;
• and
• wherein the second trajectory is different from the first trajectory.