Systems and methods for heating an aftertreatment system
AssigneeCummins Inc.
InventorGary C. Salemme
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Abstract
A method for warming an aftertreatment system of an engine system while an engine of the engine system is not running comprising starting at least one of an electric compressor and an electric heater using stored electrical energy and passing air through the engine system to at least a portion of the aftertreatment system when the engine of the engine system is not running.
Claims28
A method for warming an aftertreatment system of an engine system while an engine of the engine system is not running, the engine system including an electric compressor, the method comprising:
- starting the electric compressor using stored electrical energy;
- passing air through an exhaust gas recirculation system of the engine system to at least a portion of the aftertreatment system, wherein the air is passed in a direction opposite to a direction of exhaust flow through the exhaust gas recirculation system when the engine of the engine system is running;
- wherein the electric compressor is part of a turbocharger that further includes a turbine, and the air passed through the exhaust gas recirculation system is allowed to bypass the turbine via a turbine bypass channel.
(canceled)
(canceled)
A method for warming an aftertreatment system of an engine system while an engine of the engine system is not running, the engine system including at least one of an electric compressor and an electric heater, the method comprising:
- starting the at least one of the electric compressor and the electric heater using stored electrical energy;
- and
- passing air to at least a portion of the aftertreatment system through an engine bypass channel when the engine is not running.
A method for warming an aftertreatment system of an engine system while an engine of the engine system is not running, the engine system including at least one of an electric compressor and an electric heater, the method comprising:
- starting the at least one of the electric compressor and the electric heater using stored electrical energy;
- and
- passing air to at least a portion of the aftertreatment system through at least one valve of at least one cylinder of the engine when the engine is not running.
Dependencies are inferred from the claim text.