@misc{d845517f61e44431b6461540365dd568,
title = "Emissions from Medium-Duty Conventional and Diesel-Electric Hybrid Vehicles: NREL (National Renewable Energy Laboratory)",
abstract = "This presentation discusses the results of emissions testing for medium-duty conventional and diesel-electric hybrid vehicles. Testing was based on a field evaluation approach that utilized the Fleet DNA drive cycle database and NREL's Renewable Fuels and Lubricants (ReFUEL) Laboratory chassis dynamometer. Vehicles tested included parcel delivery (Class 6 step vans), beverage delivery (Class 8 tractors), and parcel delivery (Class 7 box trucks) vehicles, all with intended service class medium/heavy heavy-duty diesel (MHDD). Results for fuel economy and tailpipe NOx emissions included: diesel hybrid electric vehicles showed an average fuel economy advantage on identified test cycles: Class 6 Step Vans: 26 percent; Class 7 Box Trucks: 24.7Percent; Class 8 Tractors: 17.3 percent. Vehicle miles traveled is an important factor in determining total petroleum and CO2 displacement. Higher NOx emissions were observed over some test cycles: highly drive cycle dependent; engine-out differences may result from different engine operating point; and selective catalyst reduction temperature may play a role, but does not explain the whole story.",
keywords = "emissions, fuel economy, hybrid, nitrogen oxides, NOx",
author = "Adam Ragatz and Kevin Walkowicz and Matthew Thornton and Adam Duran",
year = "2014",
language = "American English",
series = "Presented at the 24th CRC Real World Emissions Workshop, 30 March - 2 April 2014, San Diego, California",
type = "Other",
}
