Fuel supply component purging system
First Claim
1. A method of purging fuel supply components for a combustion chamber of a regeneration assembly, comprising:
- performing a regeneration cycle during which fuel is supplied from a fuel source to the combustion chamber with fuel supply components including a fuel supply circuit and at least one fuel injector unit;
initiating at least a first purging cycle to purge residual fuel from the fuel supply components;
during the purging cycle, directing a flow of purging gas to the at least one fuel injector unit to purge residual fuel from the at least one fuel injector unit; and
during the purging cycle, directing a flow of purging gas to the fuel supply circuit to purge at least a portion of the fuel in the fuel supply circuit toward the fuel source.
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Accused Products
Abstract
A method of purging fuel supply components for a combustion chamber of a regeneration assembly is disclosed. A regeneration cycle is performed during which fuel is supplied from a fuel source to the combustion chamber with fuel supply components including a fuel supply circuit and at least one fuel injector unit. At least a first purging cycle is initiated to purge residual fuel from the fuel supply components. During the purging cycle, a flow of purging gas is directed to the at least one fuel injector unit to purge residual fuel from the at least one fuel injector unit. Also during the purging cycle, a flow of purging gas is directed to the fuel supply circuit to purge at least a portion of the fuel in the fuel supply circuit toward the fuel source.
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Citations
20 Claims
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1. A method of purging fuel supply components for a combustion chamber of a regeneration assembly, comprising:
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performing a regeneration cycle during which fuel is supplied from a fuel source to the combustion chamber with fuel supply components including a fuel supply circuit and at least one fuel injector unit; initiating at least a first purging cycle to purge residual fuel from the fuel supply components; during the purging cycle, directing a flow of purging gas to the at least one fuel injector unit to purge residual fuel from the at least one fuel injector unit; and during the purging cycle, directing a flow of purging gas to the fuel supply circuit to purge at least a portion of the fuel in the fuel supply circuit toward the fuel source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for supplying fuel to a regeneration assembly during a regeneration cycle, and for purging fuel supply components during a purging cycle, comprising:
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a fuel supply circuit configured to supply fuel from a fuel source to the regeneration assembly; a gas flow path configured to supply a purging gas from a gas source to the fuel supply circuit; a fuel enable valve configured to permit fuel to flow from the fuel source, through the fuel supply circuit, to the regeneration assembly when the fuel enable valve is in a first position, and configured to permit fuel to flow away from the regeneration assembly and toward the fuel source in a second position; and a controller configured to control flow of purging gas from the gas source to the fuel supply circuit to purge at least a portion of the fuel within the fuel supply circuit toward the fuel source when the fuel enable valve is in the second position. - View Dependent Claims (13, 14)
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15. A machine, comprising:
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an engine system including an engine and an exhaust flow path; a filter assembly in the exhaust flow path; a regeneration assembly configured to regenerate the filter assembly and including a combustion chamber; at least one fuel injector unit associated with the combustion chamber, and a fuel supply circuit configured to supply fuel from a fuel source to the at least one fuel injector unit; a source of purge air, and a purge air flow path in communication with the fuel supply circuit and the at least one fuel injector unit; and a controller configured to control the flow of purge air from the source to purge fuel from the at least one fuel injector unit, and configured to control the flow of purge air to purge fuel within the fuel supply circuit toward the fuel source. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification