Oxidation of Diesel Particulates by Catalyzed Wall-Flow Monolith Filters

870009

02/01/1987

Event
SAE International Congress and Exposition
Authors Abstract
Content
Regeneration characteristics of three catalyzed wall-flow monolith (WFH) diesel particulate filters (one commercial filter and two experimental filters designated GMR-Pt and GMR-Ag, respectively) were compared in dynamometer tests with a GM 4.3 L diesel engine, All three filters regenerated at temperatures below 540°C, the lowest exhaust temperature at which an uncatalyzed filter could be regenerated. Momentary throttling of the engine intake air increased both the rate and extent of the commercial trap regeneration, but had little affect on the experimental traps. The results of this study indicate that exhaust temperatures of 500°C or above are required for rapid regeneration of all three traps. Such temperatures are not readily attained with GM 4.3 L and 6.2 L vehicles. More active catalytic filters and additional modifications to the engine operation are required before catalyzed wall-flow monolith filters can be effectively employed on GM diesel engines.
Meta TagsDetails
DOI
https://doi.org/10.4271/870009
Pages
10
Citation
McCabe, R., and Sinkevitch, R., "Oxidation of Diesel Particulates by Catalyzed Wall-Flow Monolith Filters," SAE Technical Paper 870009, 1987, https://doi.org/10.4271/870009.
Additional Details
Publisher
Published
Feb 1, 1987
Product Code
870009
Content Type
Technical Paper
Language
English