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Objective Metrics for Automotive Refrigerant System Induced Transients
Technical Paper
2005-01-2501
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Automotive refrigerant system induced noise and vibration transients usually accompany A/C compressor engagement/disengagement. These transients include audible/perceivable metallic impact/slip (clink, chirp, etc.), engagement thump, delayed accumulator thump, orifice tube/TXV induced hiss, and occasionally very loud slugging. In this paper, the inherent noise source mechanisms of these transients are described, and a set of psychoacoustics based objective metrics quantifying these transients in terms of loudness and sharpness is developed. Some of the recommended design-fixes and noise control approaches for the related transient noises are also discussed.
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Authors
Citation
Thawani, P., Liu, Z., and Venkatappa, S., "Objective Metrics for Automotive Refrigerant System Induced Transients," SAE Technical Paper 2005-01-2501, 2005, https://doi.org/10.4271/2005-01-2501.Also In
References
- Automotive Air Conditioning Clutch www.oguraclutch.co.jp
- Schiffbänker, H. Brandl, F.K. Thien, G.E. “Development and Application of an Evaluation Technique to Assess the Subjective Character of Engine Noise” SAE Paper 911081 , SAE Noise and Vibration Conference and Exposition 1991
- Brüel & Kjær's Sound & Vibration Conference: Sound Quality Workshop Troy, Michigan, USA September 2003
- Personal communication with Wade Bray HeadAcoustics USA March 2004