Rolling regeneration diesel particulate trap

Details Rolling regeneration diesel particulate trap Rolling regeneration diesel particulate trap

2004-02-26

2011-10-25

Ward, Jessica L (Department: 1735)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

C422S169000, C422S170000, C055S327000

Reexamination Certificate

active

08043572

ABSTRACT:
A rolling regeneration diesel particulate filter and filtering process that utilizes NO produced in the process to generate additional amounts of NO2than the NO2produced by the diesel engine. The process includes the step of flowing diesel engine combustion exhaust through a filter system including a first section and a second section. The first section is positioned upstream of the second section with respect to the direction of the flow of the diesel engine exhaust through the filter. The first section includes a foam constructed and arranged to trap carbon-based particulates in the exhaust. A first catalyst is carried by the foam to promote the conversion of NO in the exhaust from the diesel engine to NO2. The first catalyst also promotes the reaction of NO2with at least a portion of the carbon-based particulates trapped by the foam to form CO and NO. The first catalyst carried by the foam also promotes the oxidation of CO to CO2, and the oxidation of NO, generated by the reaction of NO2with carbon, to generate additional amounts of NO2.

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