Achieving Ultra Low N[O.sub.x] Emissions Levels with a 2017 Heavy-Duty On-Highway TC Diesel Engine and an Advanced Technology Emissions System - Thermal Management Strategies

The most recent 2010 emissions standards for heavy-duty engines have established a tailpipe limit of oxides of nitrogen (N[O.sub.X]) emissions of 0.20 g/bhp-hr. However, it is projected that even when the entire on-road fleet of heavy-duty vehicles operating in California is compliant with 2010 emis...

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Bibliographic Details
Published inSAE International journal of engines Vol. 10; no. 4
Main Authors Sharp, Christopher, Webb, Cynthia C, Neely, Gary, Carter, Michael, Yoon, Seungju, Henry, Cary
Format Journal Article
LanguageEnglish
Published SAE International 01.10.2017
Subjects
Air pollution
Air pollution control
Air quality
Construction equipment
Diesel engines
Diesel motor industry
Strategic planning (Business)
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Summary:The most recent 2010 emissions standards for heavy-duty engines have established a tailpipe limit of oxides of nitrogen (N[O.sub.X]) emissions of 0.20 g/bhp-hr. However, it is projected that even when the entire on-road fleet of heavy-duty vehicles operating in California is compliant with 2010 emission standards, the National Ambient Air Quality Standards (NAAQS) requirement for ambient particulate matter and Ozone will not be achieved without further reduction in N[O.sub.X] emissions. The California Air Resources Board (CARB) funded a research program to explore the feasibility of achieving 0.02 g/bhp-hr N[O.sub.X] emissions. This paper details the thermal management strategies employed by the engine and supplemental exhaust heat addition device as was needed to achieve Ultra-Low N[O.sub.X] levels on a heavy-duty diesel engine with an advanced technology aftertreatment solution Further development is necessary for optimizing vocational test cycle emissions, but the results presented here demonstrate a potential pathway to achieving ultra-low N[O.sub.X] emissions on future heavy duty vehicles. CITATION: Sharp, C., Webb, C., Neely, G., Carter, M. et al., "Achieving Ultra Low N[O.sub.X] Emissions Levels with a 2017 Heavy-Duty On-Highway TC Diesel Engine and an Advanced Technology Emissions System - Thermal Management Strategies," SAE Int. J. Engines 10(4):2017, doi:10.4271/2017-01-0954.
ISSN:1946-3936
1946-3944
DOI:10.4271/2017-01-0954