US 12,655,806 B2 · Engine braking mode selection systems and methods

Abstract

A system includes an aftertreatment system coupled to an engine and a controller communicably coupled to the engine and the aftertreatment system, the controller is configured to perform operations. The operations include receiving an engine braking request, and, responsive to receiving the engine braking request, enabling an engine braking operation whereby at least one engine braking mode of a plurality of engine braking modes is enabled and implemented. The operations include receiving a temperature value regarding a temperature of the aftertreatment system, comparing the temperature value to a first threshold or a second threshold, and selecting and implementing one of the one or more engine braking modes based on comparing the temperature value to the first threshold or the second threshold.

Claims20

Dependent claims

A system comprising:

an aftertreatment system fluidly coupled to an engine;
and
a controller communicably coupled to the engine and the aftertreatment system, the controller comprising at least one processor coupled to at least one memory device storing instructions that, when executed by the at least one processor, cause the controller to perform operations comprising:
receiving an engine braking request;
responsive to receiving the engine braking request, enabling an engine braking operation whereby at least one engine braking mode of a plurality of engine braking modes is enabled and implemented;
receiving a temperature value regarding a temperature of the aftertreatment system;
comparing the temperature value to a first threshold or a second threshold, the first threshold greater than the second threshold;
and
selecting and implementing one of the plurality of engine braking modes based on comparing the temperature value to the first threshold or the second threshold.

6 more elements

A method comprising:

receiving, by a controller, an engine braking request for an engine;
responsive to receiving the engine braking request, enabling an engine braking operation whereby at least one engine braking mode of a plurality of engine braking modes is enabled and implemented;
receiving, by the controller, a braking power demand value regarding a braking power for the engine braking operation;
identifying, by the controller, one or more engine braking modes of the plurality of engine braking modes, the one or more engine braking modes satisfying the braking power demand value;
receiving, by the controller, a temperature value regarding a temperature of an aftertreatment system, the aftertreatment system coupled to the engine;
comparing, by the controller, the temperature value to a first threshold or a second threshold, the first threshold greater than the second threshold;
and
selecting and implementing, by the controller, one of the one or more engine braking modes based on comparing the temperature value to the first threshold or the second threshold.

5 more elements

A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a processing circuit, cause the processing circuit to perform operations comprising:

receiving an engine braking request for an engine;
receiving a braking power demand value regarding a braking power for the engine braking operation;
receiving one or more engine braking modes of a plurality of engine braking modes, the one or more engine braking modes satisfying the braking power demand value;
receiving a temperature value regarding a temperature of an aftertreatment system, the aftertreatment system coupled to the engine;
and
selecting and implementing one of the one or more engine braking modes based on comparing the temperature value to a first threshold or a second threshold, the first threshold greater than the second threshold.

3 more elements

Dependencies are inferred from the claim text.

Engine braking mode selection systems and methods

Life of this patent

Engine braking mode selection systems and methods

Life of this patent

Abstract

Claims20