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.
Objective Metrics for Automotive Refrigerant System Induced Transients
Sae Technical Papers
SAE 2005 Noise and Vibration Conference and Exhibition ; 2005
2005-05-16
Conference paper
English
Objective Metrics for Automotive Refrigerant System Induced Transients
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