||Demonstration Truck Program 7. Field Test of a Quieted General Motors Brigadier Heavy-Duty Diesel Truck.
Bender, Erich K. ;
Kane, James A. ;
||Bolt Beranek and Newman, Inc., Cambridge, MA.;Environmental Protection Agency, Washington, DC. Office of Noise Abatement and Control.
||BBN-4796; EPA-68-01-4998; EPA-550/9-82-331G;
Diesel engines ;
Noise reduction ;
Noise pollution ;
Engine noise ;
Engine mufflers ;
Exhaust systems ;
Fuel consumption ;
Field tests ;
General Motors vehicles ;
General Motors Brigadier vehicles
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
This report describes the field test and operational performance evaluation of a quieted General Motors Brigadier heavy-duty diesel truck. The noise of the truck had been reduced from 81.7 dBA to 71.6 dBA. The 12-month field test showed the noise control treatments to be effective and durable, although the noise level of the truck did increase slightly. The treatments did not have an adverse impact on vehicle operation and there was no evidence of payload displacement. The vehicle's fuel economy was better than that of comparison vehicles, but this was not caused by the noise treatments. Incremental maintenance time of 2.25 hours was attributable to treatment removal and interference while performing regular maintenance during the 12-month period.