Italian City Buses with Particulates Traps
900114
02/01/1990
- Event
- Content
- From september 1988 a fleet test started in Italy on urban buses equipped with a single ceramic monolith filter plus a by-pass and Diesel fuel burners for regeneration. The operation of the particulate trap, during the normal bus running in the city, has been assessed in three different ways:
- 1.
Continuous control, by means of a data acquisition system purposely designed, of the main parameters affecting regeneration (i.e. time between consecutive regenerations, temperature in three selected zones in the filter during regeneration,filter loading);
-
2.
Periodic control of smoke opacity of the bus measured, with and without the filter, under free acceleration and when bus is accelerating from 50 to 65 km/h on proving ground;
-
3.
Particulate collection efficiency of the trap by using a dilution tunnel with the engine operated at the test bench.
Information carried out from the fleet tests and additional information deriving from laboratory results were used for the system improvement. - 1.
- Pages
- 11
- Citation
- Balzotti, A., Cornetti, G., Pidello, F., Signer, M. et al., "Italian City Buses with Particulates Traps," SAE Technical Paper 900114, 1990, https://doi.org/10.4271/900114.