Systems and methods for filter regeneration with cylinder deactivation
AssigneesCummins Inc., Tula Technology, Inc.
InventorsJ. Steven Kolhouse, David Langenderfer, David Schmidt, Vijay Srinivasan
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Abstract
A system includes an exhaust aftertreatment system including a particulate filter and a controller. The controller is configured to: receive information comprising a temperature regarding a filter of the aftertreatment system; and responsive to determining that the temperature regarding the filter is below a temperature threshold, command the engine to operate according to a first firing fraction. The first firing fraction may define a number of active cylinders of the engine relative to a total number of cylinders of the engine, and correspond to a predetermined temperature value of the filter.
Claims20
A system, comprising:
- a controller coupled to an engine and an aftertreatment system, the controller configured to:
- receive a regeneration event trigger comprising a pressure value regarding a filter of the aftertreatment system being above a pressure threshold;
- receive information comprising a temperature regarding the filter of the aftertreatment system based on receiving the regeneration event trigger;
- and
- responsive to determining that the temperature regarding the filter is below a temperature threshold, command the engine to operate according to a first firing fraction, the first firing fraction defining a number of active cylinders of the engine relative to a total number of cylinders of the engine, and the first firing fraction corresponding to a predetermined temperature value of the filter.
A method comprising:
- receiving a regeneration event trigger comprising a pressure value regarding a filter of an aftertreatment system being above a pressure threshold;
- receiving information associated with the filter of the aftertreatment system based on receiving the regeneration event trigger, the information comprising a temperature regarding the filter, and the aftertreatment system coupled to an engine;
- and
- responsive to determining that the temperature regarding the filter is below a temperature threshold, commanding the engine to operate according to a first firing fraction, the first firing fraction defining a number of active cylinders of the engine relative to a total number of cylinders of the engine.
A system comprising:
- a processor;
- and
- a memory coupled to the processor, the memory storing instructions therein that, when executed by the processor, cause operations comprising:
- receiving a regeneration event trigger comprising a pressure value regarding a filter of an aftertreatment system being above a pressure threshold;
- receiving information comprising a temperature regarding the filter of the aftertreatment system based on receiving the regeneration event trigger, the aftertreatment system coupled to an engine;
- and
- responsive to determining that the temperature regarding the filter is below a temperature threshold, commanding the engine to operate according to a firing fraction, the firing fraction defining a number of active cylinders of the engine relative to a total number of cylinders of the engine.
Dependencies are inferred from the claim text.