Filter regeneration using ultrasonic energy
AssigneeCaterpillar Inc.
InventorsHerbert F.M. DaCosta, Mohamed Ibrahim Daoud
Life of this patent
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Abstract
An exhaust treatment system of a power source system includes a filter having an inlet and an outlet and a first exhaust line located between the filter and a power source of the power source system. The exhaust treatment system further includes an ultrasonic energy generating device coupled to the filter. In addition, the exhaust treatment system includes a second exhaust line coupled downstream of the filter.
Claims20
An exhaust treatment system of a power source system, comprising:
- a filter having an inlet and an outlet;
- a first exhaust line located between the filter and a power source of the power source system;
- an ultrasonic energy generating device coupled to the filter;
- and
- a second exhaust line coupled downstream of the filter.
A method of regenerating a filter of a combustion engine system, comprising:
- directing a portion of engine exhaust flow through the filter to collect particulate matter in the filter;
- and
- exposing at least a portion of the filter to ultrasonic energy to bum particulate matter in the filter.
An exhaust treatment system of a diesel combustion engine system, comprising:
- a diesel particulate filter having an inlet and an outlet;
- a first exhaust line located between the filter and a diesel combustion engine of the engine system;
- an ultrasonic energy generating device coupled to the exhaust treatment system;
- a controller coupled to the ultrasonic energy generating device and configured to actuate the ultrasonic energy generating device when conditions indicate that liquid is present in the filter;
- and
- a second exhaust line located downstream of the filter.
Dependencies are inferred from the claim text.