Pass-by Noise Contribution Analysis of an Agricultural Tractor HBK Hottinger Bruel and Kjaer

Format:

Book

Conference/Event

Author/Creator:

Freeman, Todd, author.

Contributor:

Engels, Bret

Thuesen, Ben

Conference Name:

Noise & Vibration Conference & Exhibition (2025-05-12 : Grand Rapids, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2025

Summary:

There is an increasing effort to reduce noise pollution across different industries worldwide. From a transportation standpoint, pass-by regulations aim to achieve this and have been implementing increasingly stricter emissions limits. Testing according to these standards is a requirement for homologation, but does little to help manufacturers understand why their vehicles may be failing to meet limits. Using a developed methodology such as Pass-by Source Path Contribution (SPC, also known as TPA) allows for identification of dominant contributors to the pass-by receivers along with corresponding acoustic source strengths. This approach is commonly used for passenger vehicles, but can be impractical for off-highway applications, where vehicles are often too large for most pass-by-suitable chassis dynamometers. A hybrid approach is thereby needed, where the same techniques and instrumentation used in the indoor test are applied to scenarios in an outdoor environment. This allows for determination of all the useful contribution results in a more representative environment and without limitations associated with indoor facilities. This paper demonstrates the application of this method on an off-highway vehicle for several scenarios

Notes:

Vendor supplied data

Publisher Number:

2025-01-0134

Access Restriction:

Restricted for use by site license