@inproceedings{0fc197f9dda942909434984934397a1c,
title = "Cost and Fuel Efficient SCR-only Solution for post-2010 HD Emission Standards",
abstract = "A promising SCR-only solution is presented to meetpost-2010 NOx emission targets for heavy dutyapplications. The proposed concept is based on anengine from a EURO IV SCR application, which isconsidered optimal with respect to fuel economy andcosts. The addition of advanced SCR after treatmentcomprising a standard and a close-coupled SCR catalystoffers a feasible emission solution, especially suited forEURO VI.In this paper, results of a simulation study are presented.This study concentrates on optimizing SCR deNOxperformance. Simulation results of cold start FTP andWHTC test cycles are presented to demonstrate thepotential of the close-coupled SCR concept. Comparisonwith measured engine out emissions of an EGR engineshows that a close-coupled SCR catalyst potentially hasNOx reduction performance as good as EGR. Practicalissues regarding the use of an SCR catalyst in closecoupledposition will be addressed, as well as engineand exhaust layout.For comparison, the requirements of a US 2010/EUROVI compliant high EGR engine are discussed: baseengine design, heat rejection, fuel injection equipment,turbo charging and fuel economy. From this study, it isconcluded that the SCR-only approach leads to a lessexpensive engine design with better fuel economy andlower PM emissions.",
author = "R.P.M. Cloudt and F.P.T. Willems and {Heijden, van der}, P.",
year = "2009",
doi = "10.4271/2009-01-0915",
language = "English",
isbn = "978-0-7680-2150-9",
series = "SAE International Journal of Fuels and Lubricants",
publisher = "Society of Automotive Engineers (SAE)",
pages = "2009--01--0915--1/8",
booktitle = "Diesel Exhaust Emission Control Modeling 2009 : SAE World Congress, 20-23 April 2009 Detroit, USA",
address = "United States",
}