Systems, devices, and methods for regenerating a particulate filter
AssigneeJtsmcdp, LLC
InventorsMark Colaw, John STILES, David Philips
Life of this patent
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Abstract
Embodiments described herein methods can be used in particulate filter regeneration, such as particulate filters used for filtering the exhaust of an engine, e.g., a diesel engine. Systems herein can be configured to dispense combustion gas(es) into housing were a particulate filter is contained and to ignite the combustion gases. Methods for conducting a safety verification process of such systems are disclosed, as well as methods for regenerating the filters. Still other embodiments are described.
Claims26
1-25. (canceled)
A method for regenerating a particulate filter comprising:
- coupling one or more supply lines, each defining a conduit, to an engine exhaust pipe through at least one of one or more access ports disposed either upstream or downstream of a particulate filter, wherein each supply line is configured to be releasably coupled to the one or more access ports;
- dispensing a fuel through the one or more supply lines and into the exhaust pipe;
- and
- igniting the fuel thereby regenerating the particulate filter.
A system for regenerating a particulate filter comprising:
- a first supply line and a second supply line,
- each supply line defining a conduit having a first end and a second end and
- each supply line configured to releasably couple to an exhaust pipe such that the conduit is in fluid communication with the exhaust pipe at the first end;
- the second end of the first supply line configured to couple to a first reservoir comprising fuel such that the first supply line conduit is in fluid communication with the first reservoir;
- the second end of the second supply line configured to couple to a second reservoir comprising oxygen such that the second supply line conduit is in fluid communication with the second reservoir;
- and
- a connector coupled to the first supply line and the second supply line near their first ends, the connector configured to couple with an access port of the exhaust pipe such that the conduits of the first and second supply lines are in fluid communication with the exhaust pipe.
An exhaust pipe fitting comprising
- a sidewall having a first end and a second end and defining a conduit extending between the first end and the second end, where the sidewall comprises an opening disposed between the first end and the second end that is in fluid communication with the conduit;
- a lock coupled to the sidewall and configured to releasably couple to one or more fluid supply lines when the supply lines are extending through the opening;
- the first end and the second end each configured to couple to an exhaust pipe or to a particulate filter housing such that the sidewall defines a portion of an engine exhaust path either upstream or downstream of the particulate filter housing.
A method of testing a particulate filter regeneration system comprising:
- opening a first valve downstream of a first fuel reservoir, a fuel pressure regulator, a second valve, and a pressure sensor disposed between the first valve and the second valve, where the first valve and the second valve each define a portion of a first conduit;
- closing the first valve;
- after closing the first valve, comparing the pressure between the first valve and the second valve to a first threshold value;
- if the pressure between the first valve and the second valve is below the threshold value, opening the second valve, closing the second valve, comparing the pressure between the first valve and the second valve to a second threshold value.
Dependencies are inferred from the claim text.