The Environment Protection Agency (EPA) Tier 4 emission standard requires locomotive engines to meet emission compliance at any ambient humidity for an ambient temperature of 60 to 105 F and an altitude level of up to 7000 ft. The engine tests were run at a range of intake air humidity and temperature to determine oxides of Nitrogen (NOx) emissions sensitivity to humidity, intake air temp for large bore diesel engines and compared with humidity correction factor recommended by EPA. Further, the change in NOx concentration altered conversion efficiency of the Selective Catalytic Reduction (SCR) catalyst. Hence, the change in Ammonia to NOx ratio and amount of DEF fluid required to achieve target NOx emissions reduction were studied. Considering this effect, the doser and DEF tank sizing strategy was defined based on in-use ambient humidity, temperature and altitude test conditions in order to mitigate risk of running out of DEF fluid during in-use operation of locomotives.
Skip Nav Destination
ASME 2014 Internal Combustion Engine Division Fall Technical Conference
October 19–22, 2014
Columbus, Indiana, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-4616-2
PROCEEDINGS PAPER
Intake Air Humidity Consideration for DEF Tank Sizing for Tier 4 Emission Compliance Engines
Boopathi Singalandapuram Mahadevan
Boopathi Singalandapuram Mahadevan
Cummins Inc., Columbus, IN
Search for other works by this author on:
Colin Norris
Cummins Inc., Columbus, IN
John L. Hoehne
Cummins Inc., Columbus, IN
Boopathi Singalandapuram Mahadevan
Cummins Inc., Columbus, IN
Paper No:
ICEF2014-5526, V001T01A006; 8 pages
Published Online:
December 9, 2014
Citation
Norris, C, Hoehne, JL, & Mahadevan, BS. "Intake Air Humidity Consideration for DEF Tank Sizing for Tier 4 Emission Compliance Engines." Proceedings of the ASME 2014 Internal Combustion Engine Division Fall Technical Conference. Volume 1: Large Bore Engines; Fuels; Advanced Combustion; Emissions Control Systems. Columbus, Indiana, USA. October 19–22, 2014. V001T01A006. ASME. https://doi.org/10.1115/ICEF2014-5526
Download citation file:
12
Views
0
Citations
Related Proceedings Papers
Related Articles
Development of the Low-Emission GE-7FDL High-Power Medium-Speed Locomotive Diesel Engine
J. Eng. Gas Turbines Power (April,2003)
Effects of B20 on Emissions and the Performance of a Diesel Particulate Filter in a Light-Duty Diesel Engine
J. Eng. Gas Turbines Power (November,2010)
Effect of Mass Transfer on the Performance of Selective Catalytic Reduction (SCR) Systems
J. Eng. Gas Turbines Power (March,2011)
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Determination of the Effects of Safflower Biodiesel and Its Blends with Diesel Fuel on Engine Performance and Emissions in a Single Cylinder Diesel Engine
International Conference on Software Technology and Engineering, 3rd (ICSTE 2011)
Pressure Testing
Process Piping: The Complete Guide to ASME B31.3, Third Edition