Method and driving cycles for the estimation of the pollutant emissions of the urban buses and bus network

1. Method and driving cycles for the estimation of the pollutant emissions of the urban buses and bus network M. Andr� (INRETS), B. Dolidz�-Garrot (RATP) With the help of IAURIF (Inst. of Urbanism in Ile de France),the technical support of RATP (Prototypes and tests group), INRETS-LTE teamand the financial support of ADEME  EC-DG Energy Transport (Artemis) COST346

2. Assessment of buses and bus network : method and D.C.

3. Typical areas

4. Bus lines and their itinerary through the type-areas

5. Bus lines and their itinerary through the type-areas

6. Characterization of the bus lines according to the served areas

7. Monitoring of buses and development of representative driving cycles

8. Three bus representative driving cycles, allowing a disaggregate analysis

9. Pollutant emissions, urban context & driving conditions

10. Conclusions - perspectives The urban context was analysed As a basis for the characterization of the buses driving conditions Bus lines described according to their itinerary profiles Monitoring of 4 representative bus lines, during 25000 km in actual exploitation High variability of the actual driving conditions according to the urban and exploitation contexts Building up of 3 representative driving cycles Construction of engine test cycles Pollutant emissions measurements on 3 buses (EURO2, EURO3 w/wo PM trap, including Non Regulated Pollutants) An approach and driving cycles allowing a detailed analysis of the bus and bus network pollutant emissions