Technical Paper
Development of a New Composite School Bus Test Cycle and the Effect of Fuel Type on Mobile Emissions from Three School Buses
2005-04-11
2005-01-1616
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 and class 8 trucks. This paper presents the results of mobile school bus testing that has been performed to quantify the emission reduction capabilities of various alternative fuels, such as B20/#2 diesel, ultra low sulfur diesel (ULSD), and B20/ULSD, when applied to school buses that are representative of those currently in use in the state of NJ. Three school buses equipped with an International T444E, an International DT466E, and a Cummins 5.9L ISB engine were instrumented and tested at the Aberdeen Test Center at the Aberdeen Proving Grounds in Maryland. Exhaust gas emission measurements were made using a Semtech-D mobile emissions analyzer to measure CO, CO2, NO2, NO, O2, and unburned hydrocarbons, along with a Sensors PM-300 to measure PM.
