| Main Title |
Noise Reduction Retrofit for a 'New Look' GMC Transit Bus: Service Bulletin. |
| Author |
Kaye, Michael C. ;
|
| CORP Author |
Tri-County Metropolitan Transportation District of Oregon, Portland.;Urban Mass Transportation Administration, Washington, DC. Office of Technology Development and Deployment.;Environmental Protection Agency, Washington, DC. Office of Noise Abatement and Control. |
| Year Published |
1981 |
| Report Number |
UMTA-OR-06-0005; UMTA-OR-06-0005-81-1; |
| Stock Number |
PB83-112789 |
| Additional Subjects |
Buses(Vehicles) ;
Noise reduction ;
Diesel engines ;
Exhaust emissions ;
Fuel consumption ;
Cost estimates ;
Noise pollution ;
Air pollution ;
Urban transportation ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB83-112789 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
64p |
| Abstract |
This document gives instructions on how to apply a noise treatment to a contemporary city transit bus without extensive structural alteration. Prototype anti-noise treatments of two conventional transit motorbuses were tested: a Flexible 'New Look' and a GMC 'New Look' model. Baseline bus configuration, noise ratings, and performance benchmarks are presented for a GMC model T8H-5307A transit bus, powered by a Detroit Diesel 8V-71N engine. Earlier, a Flxible model 111DC-D061 was similarly treated using the same concepts and much of the same hardware. The results are almost identical, showing the wide range of treatment applicability. This report gives instructions as to how GMC 'New Look' model is retrofitted with a turbocharged 8V-71TAC engine and ancillary hardware. The instructions include the revision of the engine aspiration system for easier breathing, the lining of the engine compartment with an anti-noise blanket, and the silencing of the hiss of the compressed air system dryer. |
| Supplementary Notes |
Sponsored in part by Environmental Protection Agency, Washington, DC. Office of Noise Abatement and Control. See also PB80-226103. |
| NTIS Title Notes |
Final rept. Apr 80-Nov 81. |
| PUB Date Free Form |
Nov 81 |
| Category Codes |
13F; 85H#; 68B#; 91B; 43G |
| NTIS Prices |
PC A04/MF A01 |
| Primary Description |
200/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
307116509 |
| Origin |
NTIS |
| Type |
CAT |
