Process for Commissioning an Exhaust Particulate Filter
AssigneeInfineum International Limited
InventorsDavid R. Coultas, Amy J. Challinor, David Jilbert
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Abstract
A process is provided for commissioning a particulate filter for the exhaust system of a device powered in whole or in part by an internal combustion engine. The process improves the filtration efficiency of an uncarbonized or decarbonized particulate filter through a single deposition of metal oxide particles via a gas stream.
Claims22
A process for commissioning a particulate filter for the exhaust system of a device, the device being powered in whole or in part by an internal combustion engine fuelled either by a liquid hydrocarbonaceous fuel untreated with lubricating oil or by a gaseous hydrocarbonaceous fuel, the process comprising:
- (i) passing a gas stream through an uncarbonized new, or decarbonized reconditioned, particulate filter;
- (ii) releasing into the gas stream upstream of the particulate filter a flow of metal oxide particles in a single period of release sufficient to deposit metal oxide particles onto the uncarbonized or decarbonized surfaces of the channels of the filter exposed to the gas stream;
- and
- (iii) consigning the particulate filter to operate on the exhaust gas emitted from the internal combustion engine of the device in service.
A fuel composition for initial use in a device installed with an uncommissioned particulate filter in the exhaust system of its internal combustion engine, the fuel composition being untreated with lubricating oil and/or additives originating therefrom, and comprising:
- (a) a hydrocarbonaceous liquid selected from diesel or gasoline petroleum fuel, or biofuel, or mixtures thereof, and
- (b) a fuel additive comprising metal oxide or precursor stabilized by one or more organic compounds in a hydrocarbonaceous dispersion, the fuel additive not containing any lubricating oil or other, heavier petroleum fraction or additives originating therefrom;
- wherein the fuel additive comprises a dispersion of iron oxide or cerium oxide or mixture thereof, or comprises an organometallic compound or complex comprising iron.
Dependencies are inferred from the claim text.