This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Comparison of Exhaust Emissions from Application of the Ramped Modal Cycle and Steady-State Nonroad Test
Technical Paper
2005-01-1615
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
With input from industry, the United States Environmental Protection Agency (US EPA) has developed ramped modal versions of its steady-state certification duty cycles for land-based nonroad diesel engines. The Ramped Modal Cycle (RMC) calls for gathering gaseous and particulate emissions continuously over the cycle, while the steady-state test specifies that samples be taken for only a portion of the time at each mode. The RMC test was developed in part to capture discrete regeneration events associated with advanced catalyst systems like NOx adsorbers that are anticipated to meet future nonroad emission standards.1 To compare the emission levels between these two tests, a 5.9 liter medium-heavy-duty on-highway diesel engine rated for 260 hp @ 2500 rpm, was run at EPA's National Vehicle and Fuel Emissions Laboratory (NVFEL), derated to 180 hp @ 2500 rpm, to simulate the configuration of a typical nonroad engine. This engine was equipped with both PM and NOx control devices that are likely to be applied for meeting future long-term emission standards. The goal of this testing was to determine if the RMC emissions with a 2014-like engine and catalytic system correlated to the established 8-mode steady-state test.
Recommended Content
Authors
- Cleophas Jackson - U.S. EPA - Office of Transportation and Air Quality
- Chien Sze - U.S. EPA - Office of Transportation and Air Quality
- Charles Schenk - U.S. EPA - Office of Transportation and Air Quality
- Brian Olson - U.S. EPA - Office of Transportation and Air Quality
- Christopher Laroo - U.S. EPA - Office of Transportation and Air Quality
Topic
Citation
Jackson, C., Sze, C., Schenk, C., Olson, B. et al., "Comparison of Exhaust Emissions from Application of the Ramped Modal Cycle and Steady-State Nonroad Test," SAE Technical Paper 2005-01-1615, 2005, https://doi.org/10.4271/2005-01-1615.Also In
References
- Code of Federal Regulations, Title 40, Part 89 U.S Environmental Protection Agency, U.S. Government Printing Office Washington, DC July 1 2004
- Test Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments; Proposed Rule Code of Federal Regulations , Title 0, Part 1065, 2004; Fed. Regist 2004
- Schenk, C. Laroo, C. Olson, B. Fisher, L. Four-Flow Path High-Efficiency NO x and PM Exhaust Emission Control System for Heavy-Duty On-Highway Diesel Engines Soc. Automot. Eng. Tech. Pap. Ser. 2003 , No. 2003-01-2305
- Code of Federal Regulations, Title 40, Part 89 U.S.Environmental Protection Agency, U.S. Government Printing Office Washington, DC July 1 2004 124
- Code of Federal Regulations, Title 40, Part 1039 U.S. Environmental Protection Agency, U.S.Government Printing Office Washington, DC July 1 2004
- Code of Federal Regulations, Title 40; Part 1039 U.S. Environmental Protection Agency, U.S.Government Printing Office Washington, DC July 1 2004 67
- Code of Federal Regulations, Title 40, Part 86 U.S.Environmental Protection Agency, U.S. Government Printing Office Washington, DC July 1 2004