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OLS Field Name OLS Field Data
Main Title Noise Reduction Retrofit for a 'New Look' Flexible Transit Bus: Service Bulletin.
Author Kaye, Michael C. ;
CORP Author Tri-County Metropolitan Transportation District of Oregon, Portland.;Transportation Systems Center, Cambridge, MA.;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 1980
Report Number DOT-TSC-UMTA-80-16 ; UMTA-OR-06-0005-80-1
Stock Number PB80-226103
Additional Subjects Buses(Vehicles) ; Noise reduction ; Diesel engines ; Exhaust emissions ; Fuel consumption ; Cost estimates ; Noise pollution ; Air pollution ; Urban transportation ;
Library Call Number Additional Info Location Last
NTIS  PB80-226103 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 66p
Abstract This document presents instructions on how to apply a noise treatment to a contemporary city transit bus without extensive structural alteration. Baseline bus configuration, noise ratings, and performance benchmarks are presented for a Flexible 111DC-DO61 transit bus powered by a Detroit Diesel 8V-71N engine. The concepts and much of the hardware described in this report are transferable to similar buses. The information presented herein is of interest primarily to transit bus operators wanting to reduce noise by practical means, and to government agencies, manufacturers, and planners concerned with reducing the noise of buses in service at a moderate cost. In this report instructions are given on how to retrofit the engine with a turbo-charger and ancillary hardware. Acoustic benefits and performance side-effects are given. One beneficial side-effect, because of turbo-charging, is reduced harmful exhaust emissions. Another, because of smaller injectors and reduced exhaust back pressure, is fuel conservation. The instructions in this report are complete with sources for manufactured components and raw materials, and with mechanical drawings for components to be locally fabricated. Illustrations and text direct installation as well as effects of noise ratings and performance side-effects are also presented. In this report practical application is coupled with theoretical explanation throughout.
Supplementary Notes Sponsored in part by Environmental Protection Agency, Washington, DC. Office of Noise Abatement and Control.
NTIS Title Notes Final rept. Jun 78-Jan 80.
PUB Date Free Form Sep 80
Category Codes 13F; 85H; 68B; 68C; 91B
NTIS Prices PC A04/MF A01
Primary Description 200/02
Document Type NT
Cataloging Source NTIS/MT
Control Number 323785392
Origin NTIS
Type CAT