Tuesday, 24 May 2005 - 9:25 AM
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This presentation is part of: Graduate Presentations

The Effect of Fuel Type and Aftertreatment Devices on Mobile School Bus Emissions from Diesel Powered School Buses

Sarina Colligan, Andrew Toback, Anthony J. Marchese, and Robert P. Hesketh. Rowan University, Glassboro, NJ

The New Jersey Department of Transportation (NJDOT) is currently sponsoring a research study at Rowan University to develop strategies for reducing diesel emissions from mobile sources such as school buses. Experiments have been performed to quantify the emission reduction capabilities of various alternative fuels, including biodiesel and ultra low sulfur diesel blends, as well as aftertreatment devices such as diesel oxidation catalysts (DOC) and diesel particulate filters (DPF). Three school buses equipped with an International T444E, an International DT466E, and a Cummins 5.9L ISB engine were instrumented and tested. Emissions of CO, CO2, NO2, NO, O2, unburned hydrocarbons, and PM were measured. A school bus cycle was developed by acquiring Global Positioning System (GPS) data from actual school bus routes from different municipalities within the state of New Jersey. Alternative fuels produced minor reductions in CO, HC, and PM while the use of a DPF eliminated almost all PM.

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