Increase aftertreatment temperature during light load operation

An apparatus, comprising:

• a temperature control circuit structured to:
• receive an inlet temperature of a selective catalytic reduction system;
• determine whether the inlet temperature meets a temperature setpoint;
• and
• adjust an exhaust manifold pressure setpoint based on the determination of the inlet temperature;
• and
• a pressure control circuit structured to:
• determine whether the exhaust manifold pressure of at least one of a first bank or second bank meets the exhaust manifold pressure setpoint;
• and
• cause an adjustment of an effective flow area of the at least one of the first bank or the second bank based on the exhaust manifold pressure, the adjustment of the effective flow area structured to increase exhaust temperature during light load operation.

A system for increasing exhaust temperature of an exhaust system, the system comprising:

• an exhaust throttle valve;
• and
• a controller communicatively coupled to the exhaust throttle valve, the controller structured to:
• receive an inlet temperature of a selective catalytic reduction system;
• determine whether the inlet temperature meets a temperature setpoint;
• adjust an exhaust manifold pressure setpoint based on the determination of the inlet temperature;
• determine whether the exhaust manifold pressure of at least one of a first bank or second bank meets the exhaust manifold pressure setpoint;
• and
• cause, via the exhaust throttle valve, an adjustment of an effective flow area of the at least one of the first bank or the second bank based on the exhaust manifold pressure, the adjustment of the effective flow area structured to increase exhaust temperature during light load operation.