| Impact of Urea Injection on Nox Emissions for Msu Challenge X Hybrid Electric Vehicle | ||
| Kyle Crawford1, Hossein Toghiani2, Marshall Molen3, David Oglesby4, Christopher Whitt4, Kennabec Walp4 and Rebecca K. Toghiani5, (1)Dave C. Swalm School of Chemical Engineering, Mississippi State University, P.O. Box 9595, Mississippi State, MS 39762, (2)Chemical Engineering, Mississippi State University, 330 Swalm Circle President Dr., Mississippi State University, MS 39762, (3)Center for Advanced Vehicular Systems, Electrical and Computer Engineering Department, Mississippi State University, Research Boulevard, Starkville, MS 39759, (4)Center for Advanced Vehicular Systems, Mississippi State University, Research Boulevard, Starkville, MS 39759, (5)Chemical Engineering, Dave C. Swalm School of Chemical Engineering, Mississippi State University, 330 Swalm, Mississippi State, MS 39762 The addition of Tier 2 standards by United States Environmental Protection Agency (EPA) has increased focus on emissions from light-duty vehicles. In this study, a diesel-electric hybrid vehicle was tested under the Challenge X program. The diesel engine was powered by a 20% soy-based biodiesel - 80% diesel blend. The electric motor received its energy from a 330 volt Nickle Metal Hydride battery pack. The diesel engine, notorious for its high emissions of nitrogen oxides (NOx) and particulate matter (PM), requires aftertreatment of its exhaust to achieve Tier 2 EPA compliance. In this work, a urea injection selective catalytic reduction (SCR) system was developed to reduce NOx emissions. Also, a diesel particulate filter (DPF) was employed for the purpose of PM reduction. Significant decreases in both NOx and PM emissions were achieved, when operating the hybrid vehicle under standard drive cycles. Extended Abstract Status: File Uploaded | ||