TRUCK NOISE IV-D: THE REDUCTION OF ENGINE NOISE ON HEAVY DUTY DIESEL TRUCKS
The vibration of the external surfaces of the engine is sometimes a major cause of noise emissions from a Detroit Diesel 8V-71, two cycle diesel engine. Since major engine modifications were beyond the scope of this project, the reduction in engine noise was obtained through shielding. One shielding technique employed close-fitting acoustical covers mounted to the engine itself. Another employed a partial engine enclosure mounted to the chassis. With both shielding techniques, the proper acoustical lining was found to be important as well as sealing. A Detailed development of these shields is given.
- See also report no. 4, PB-238 361.
International Harvester CompanyTruck Engineering Center
Fort Wayne, Indiana, USA 46801
Office of Noise Abatement400 7th Street, SW
Washington, DC USA 20590
- Shrader, J T
- Publication Date: 1975-4
- Pagination: 127 p.
- TRT Terms: Combustion; Diesel engines; Engines; Mechanical properties; Noise; Noise control; Performance evaluations; Tests; Trucks; Vibration; Weight
- Uncontrolled Terms: Enclosures; Noise reduction; Shielding
- Old TRIS Terms: Covering; Engine noise; Truck engines; Weight mass
- Subject Areas: Environment; Motor Carriers; Vehicles and Equipment;
- Accession Number: 00092243
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: Rpt. No. 5, DOT/TST-75-88
- Contract Numbers: DOT-OS-20222
- Files: NTIS
- Created Date: Oct 18 1976 12:00AM