Increase aftertreatment temperature during light load operation
AssigneeCummins Inc.
InventorsTravis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
Life of this patent
Estimating the term…
Abstract
A method includes: determining that at least one cylinder of a first cylinder bank of an engine is active; determining that at least one cylinder of a second cylinder bank of the engine is inactive; receiving an inlet temperature of a selective catalytic reduction system; comparing the inlet temperature to a temperature setpoint; and adjusting at least one of a first exhaust manifold pressure setpoint for the first cylinder bank or a second exhaust manifold pressure setpoint for the second cylinder bank based on the comparison.
Claims20
A method, comprising:
- determining that at least one cylinder of a first cylinder bank of an engine is active;
- determining that at least one cylinder of a second cylinder bank of the engine is inactive;
- receiving an inlet temperature of a selective catalytic reduction system;
- comparing the inlet temperature to a temperature setpoint;
- and
- adjusting at least one of a first exhaust manifold pressure setpoint for the first cylinder bank or a second exhaust manifold pressure setpoint for the second cylinder bank based on the comparison.
A system of a vehicle, the system comprising:
- a controller including at least one processor and a memory storing instructions therein that, when executed by the at least one processor, cause the controller to:
- determine that at least one cylinder of a first cylinder bank of an engine is active;
- determine that at least one cylinder of a second cylinder bank of the engine is inactive;
- receive an inlet temperature regarding a selective catalytic reduction system;
- compare the inlet temperature to a temperature setpoint;
- and
- adjust at least one of a first exhaust manifold pressure setpoint for the first cylinder bank or a second exhaust manifold pressure setpoint for the second cylinder bank based on the comparison.
A non-transitory computer-readable medium having computer readable instructions embodied therein that, when executed by one or more processors of a system, cause operations comprising:
- determining that at least one cylinder of a first cylinder bank of an engine is active;
- determine that at least one cylinder of a second cylinder bank of the engine is inactive;
- receiving an inlet temperature of a selective catalytic reduction system;
- comparing the inlet temperature to a temperature setpoint;
- and
- adjusting at least one of a first exhaust manifold pressure setpoint for the first cylinder bank or a second exhaust manifold pressure setpoint for the second cylinder bank based on the comparison.
Dependencies are inferred from the claim text.