Case Study of Pass-By Noise Development on a Class 8 Truck E-A-R Thermal/Acoustic Systems

Format:

Conference/Event

Author/Creator:

Sorenson, Sorenson, author.

Contributor:

Jorro, Steven

Knittel, James

Waltenberry, Christopher

Conference Name:

SAE 2011 Noise and Vibration Conference and Exhibition (2011-05-16 : Grand Rapids, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Governmental regulations regarding exterior noise emitted by motor vehicles vary throughout the world. A vehicle which is compliant in one market may not be compliant in another market. In this case, a production North American class 8 truck was being prepared for sale overseas. The requirement to meet European Union (EU) pass-by regulations as tested per the EU standard meant development of a production feasible package to substantially reduce noise emissions without changing any fundamental design or operating parameters of the truck. The development testing was done on a chassis dynamometer in a hemi-anechoic chamber without any specific pass-by noise simulation software. Efforts to develop a reasonably accurate correlation from lab to track, use of acoustic beamforming for source localization and package design iterations leading to a final successful package are discussed

Notes:

Vendor supplied data

Publisher Number:

2011-01-1731

Access Restriction:

Restricted for use by site license