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A Road Grade Based Weighting System For Calculating On-Road Distance-Specific Oxides Of Nitrogen Emissions Of Light-Duty Diesel Vehicles, Jason D. Bolyard
A Road Grade Based Weighting System For Calculating On-Road Distance-Specific Oxides Of Nitrogen Emissions Of Light-Duty Diesel Vehicles, Jason D. Bolyard
Graduate Theses, Dissertations, and Problem Reports
Light-duty diesel vehicles have received significant public and governmental scrutiny recently for violating emissions regulations. Similar to the heavy-duty diesel manufacturers during the late 1990’s, some light-duty manufacturers were implementing different control strategies between laboratory certification tests and customer on-road operation. These devices allowed the vehicle to pass certification tests but then use alternative operation on the road during normal use. The alternative operation would allow for better fuel economy but higher oxides of nitrogen (NOx) emissions. Light-duty vehicles are currently certified in the US using chassis dynamometer testing. The effects of all on-road driving conditions are not mimicked in …