Abstract: An emission control system for an engine includes a user interface having an emission standards switchability button, which may initiate a plurality of control operations to effect a switch between two different emission standards applicable to operation of the engine. A controller communicatively coupled with the user interface includes a memory encoding one or more processor-executable routines and a processor configured to execute the one or more routines. The processor may turn off reductant dosing under a first set of engine operational parameters in a selective catalytic reduction (SCR) system that receives exhaust from the engine, turn on reductant dosing in the SCR system under a second set of engine operational parameters, turn power off under the first set of engine operational parameters to SCR sensors configured to generate signals indicative of operational characteristics of the SCR system, and turn power on to the SCR sensors under the second set of engine operational parameters.

Abstract: A control system of an engine is provided. The control system includes an inlet sensor configured to generate a signal indicative of an engine inlet air temperature and an intake manifold sensor configured to generate a signal indicative of an engine intake manifold air temperature. The control system includes a control module communicably coupled to the inlet sensor and the intake manifold sensor. The control module is configured to determine the engine inlet air temperature and the engine intake manifold air temperature. The control module is configured to determine an initial de-rate value based on a predetermined relationship between the engine inlet air temperature and the engine intake manifold air temperature. The control module is configured to determine a pre-stored de-rate modifier corresponding to an engine speed. The control module is configured to determine a final de-rate value based on the initial de-rate value and the pre-stored de-rate modifier.

Abstract: A control system of an engine is provided. The control system includes an inlet sensor configured to generate a signal indicative of an engine inlet air temperature and an intake manifold sensor configured to generate a signal indicative of an engine intake manifold air temperature. The control system includes a control module communicably coupled to the inlet sensor and the intake manifold sensor. The control module is configured to determine the engine inlet air temperature and the engine intake manifold air temperature. The control module is configured to determine an initial de-rate value based on a predetermined relationship between the engine inlet air temperature and the engine intake manifold air temperature. The control module is configured to determine a pre-stored de-rate modifier corresponding to an engine speed. The control module is configured to determine a final de-rate value based on the initial de-rate value and the pre-stored de-rate modifier.