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Methodology for Controlling Nitrogen Oxides Emissions during Cold Start
Journal Article
02-14-03-0030
ISSN: 1946-391X, e-ISSN: 1946-3928
Sector:
Topic:
Citation:
Singh, N., Adelman, B., and Manis, J., "Methodology for Controlling Nitrogen Oxides Emissions during Cold Start," SAE Int. J. Commer. Veh. 14(3):365-374, 2021, https://doi.org/10.4271/02-14-03-0030.
Language:
English
Abstract:
The current publication considers several methodologies to minimize tailpipe (TP) nitrogen oxides (NOx) emissions during cold start operation. A standard, 2019 aftertreatment design of diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and selective catalytic reduction (SCR)/ammonia oxidation catalyst (AMOX) was used as the baseline. Cold start NOx conversion and TP NOx emissions improvements were measured when a larger SCR, dual diesel exhaust fluid (DEF) dosing, and an electric heater were added to the exhaust configuration. Additional improvements were achieved by an improved cold start combustion mode was developed.