Engine brake control according to engine operating parameters

A control system, comprising:

• a plurality of sensors;
• and
• a controller communicatively coupled to the plurality of sensors to:
• determine that engine braking is enabled to control an engine;
• identify, based on the engine braking being enabled, a set of operating parameters of the engine, wherein
• the set of operating parameters differ based on a performance characteristic,
• wherein the performance characteristic is associated with prioritizing between:
• a reduction in a transient response time of an output of the engine, and
• a reduction in a hydrocarbon buildup in an exhaust aftertreatment device of the engine,
• when the performance characteristic is associated with prioritizing the reduction in the transient response time of the output of the engine, the set of operating parameters include at least one of:
• an engine run time of the engine,
• an intake manifold pressure of an intake of the engine, or
• a coolant temperature of the engine, and
• when the performance characteristic is associated with prioritizing the reduction in the hydrocarbon buildup in the exhaust aftertreatment device of the engine, the set of operating parameters include at least one of:
• an amount of the hydrocarbon buildup in the exhaust aftertreatment device of the engine, or
• an air-to-fuel ratio of a turbocharger of the engine;
• monitor, via the plurality of sensors, the set of operating parameters of the engine;
• determine that operating values of the set of operating parameters satisfy corresponding thresholds of the set of operating parameters that are associated with applying engine braking to the engine;
• determine, based on the operating values satisfying the corresponding thresholds, an engine braking configuration associated with activating engine braking of a set of cylinders of the engine;
• and
• cause the engine braking to be applied to the set of cylinders to increase a temperature of exhaust gas from the engine.

A power system, comprising:

• an engine that includes a plurality of cylinders;
• a plurality of sensors;
• and
• a controller configured to:
• determine, based on a performance characteristic of the engine, that engine braking is enabled to control the engine,
• wherein the performance characteristic is associated with prioritizing between:
• a reduction in a transient response time of an output of the engine, and
• a reduction in a hydrocarbon buildup in an exhaust aftertreatment device of the engine;
• identify, based on the engine braking being enabled, a set of operating parameters of the engine that are associated with the performance characteristic, wherein
• the set of operating parameters differ based on the performance characteristic,
• when the performance characteristic is associated with prioritizing the reduction in the transient response time of the output of the engine, the set of operating parameters include at least one of:
• an engine run time of the engine,
• an intake manifold pressure of an intake of the engine, or
• a coolant temperature of the engine, and
• when the performance characteristic is associated with prioritizing the reduction in the hydrocarbon buildup in the exhaust aftertreatment device of the engine, the set of operating parameters include at least one of:
• an amount of the hydrocarbon buildup in the exhaust aftertreatment device of the engine, or
• an air-to-fuel ratio of a turbocharger of the engine;
• monitor, via the plurality of sensors, the set of operating parameters;
• determine that operating values of the set of operating parameters satisfy corresponding thresholds of the set of operating parameters;
• determine, based on the operating values, an engine braking configuration associated with activating engine braking of a set of cylinders of the plurality of cylinders;
• and
• cause the engine braking to be applied to the set of cylinders to cause an increase of an amount of fuel to be provided to one or more other cylinders that are not included in the set of cylinders.