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The Effect of a Diesel Oxidation Catalyst and a Catalyzed Particulate Filter on the Emissions from a Heavy Duty Diesel Engine
Technical Paper
2006-01-0875
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The objective of this research was to study the effects of a CCRT®, henceforth called Diesel Oxidation Catalyst - Catalyzed Particulate Filter (DOC-CPF) system on particulate and gaseous emissions from a heavy-duty diesel engine (HDDE) operated at Modes 11 and 9 of the old Environmental Protection Agency (EPA) 13-mode test cycle Emissions characterized included: total particulate matter (TPM) and components of carbonaceous solids (SOL), soluble organic fraction (SOF) and sulfates (SO4); vapor phase organics (XOC); gaseous emissions of total hydrocarbons (HC), carbon monoxide (CO), oxides of nitrogen (NOx), nitric oxide (NO) and nitrogen dioxide (NO2), oxygen (O2) and carbon dioxide (CO2); and particle size distributions at normal dilution ratio (NDR) and higher dilution ratio (HDR). Significant reductions were observed for TPM and SOL (>90%), SOF (>80%) and XOC (>70%) across the DOC-CPF at both modes. The HC and NO reduction efficiencies across the DOC, CPF and the DOC-CPF were also significant at both modes. CO was completely oxidized by the DOC. NO2 increased across the DOC, CPF and DOC-CPF at both modes. Reductions (>90%) were observed in particle number and volume concentrations at the Mode 11 NDR and HDR and in the Mode 9 NDR particle number and volume concentrations.
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Lakkireddy, V., Mohammed, H., Johnson, J., and Bagley, S., "The Effect of a Diesel Oxidation Catalyst and a Catalyzed Particulate Filter on the Emissions from a Heavy Duty Diesel Engine," SAE Technical Paper 2006-01-0875, 2006, https://doi.org/10.4271/2006-01-0875.Also In
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