Transport refrigeration system and method of regenerating a diesel particulate filter
AssigneeCarrier Corporation
InventorMichael Stockbridge
Life of this patent
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Abstract
A method for performing a regeneration cycle for regenerating a diesel particulate filter of a transport refrigeration system. The method includes increasing an air intake throttling level of an engine intake air flow by reducing an air control valve area. The method also includes supplementing the temperature increase of the air intake throttling by energizing an engine preheater.
Claims12
A method for performing a regeneration cycle for regenerating a diesel particulate filter of a transport refrigeration system comprising:
- increasing an air intake throttling level of an engine intake air flow by reducing an air control valve area;
- and
- supplementing the temperature increase of the air intake throttling by energizing an engine preheater.
A method for performing a regeneration cycle for regenerating a diesel particulate filter of a transport refrigeration system comprising:
- determining if an engine exhaust temperature is above a threshold temperature required for regeneration;
- and
- heating an engine intake air flow with an engine preheater until the engine exhaust temperature is above the threshold temperature required for regeneration.
A transport refrigeration system comprising:
- a diesel engine powering the refrigeration unit, the diesel engine having an engine air preheat circuit and an exhaust system for discharging engine exhaust gas from the diesel engine to the atmosphere;
- a diesel engine exhaust gas treatment unit disposed in the diesel engine exhaust system, the diesel engine exhaust gas treatment unit including a diesel particulate filter;
- and
- a refrigeration unit controller for controlling operation of the refrigeration unit, the refrigeration unit controller configured to perform a regeneration cycle for regenerating the diesel particulate filter by increasing an exhaust temperature of an exhaust gas flow, the exhaust temperature increased with an engine preheater which is part of the engine air preheat circuit.
Dependencies are inferred from the claim text.