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.
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. Download Citation
Author(s):
A. Balzotti, G. M. Cornetti, F. Pidello, M. Signer, V. Scorsone
Affiliated:
Iveco Engineering
Pages: 11
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Advances in Diesel Particulate Control-SP-0816, SAE Transactions Journal of Commercial Vehicles-V99-2
Related Topics:
Buses
Particulate filters
Diesel fuels
Data acquisition and handling
Fleets
Test facilities
Vehicle acceleration
Particulate matter (PM)
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