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SAE Standard Procedure J2747 for Measuring Hydraulic Pump Airborne Noise
Technical Paper
2007-01-2408
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This work discusses the development of SAE procedure J2747, “Hydraulic Pump Airborne Noise Bench Test”. This is a test procedure describing a standard method for measuring radiated sound power levels from hydraulic pumps of the type typically used in automotive power steering systems, though it can be extended for use with other types of pumps. This standard was developed by a committee of industry representatives from OEM's, suppliers and NVH testing firms familiar with NVH measurement requirements for automotive hydraulic pumps.
Details of the test standard are discussed. The hardware configuration of the test bench and the configuration of the test article are described. Test conditions, data acquisition and post-processing specifics are also included. Contextual information regarding the reasoning and priorities applied by the development committee is provided to further explain the strengths, limitations and intended usage of the test procedure. Lastly, continuing actions with respect to further development of this standard as well as additional test standards for hydraulic pump NVH are discussed.
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Citation
Fernholz, C., Offerle, T., Beyerlein, R., Stevenson, W. et al., "SAE Standard Procedure J2747 for Measuring Hydraulic Pump Airborne Noise," SAE Technical Paper 2007-01-2408, 2007, https://doi.org/10.4271/2007-01-2408.Also In
SAE 2007 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V116-6; Published: 2008-08-15
Number: V116-6; Published: 2008-08-15
References
- “Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for anechoic and hemi-anechoic rooms” International Standards Organization (ISO) 2003
- “Precision methods for the determination of sound power levels of noise sources in anechoic and hemi-anechoic rooms” American National Standards Institute 1991