An investigation of vehicle HVAC cabin noise

Mavuri, S, Watkins, S, Wang, X, St Hill, S and Weymouth, D 2008, 'An investigation of vehicle HVAC cabin noise', in 2008 SAE World Congress, Detroit, United States, 14-17 April, 2008.


Document type: Conference Paper
Collection: Conference Papers

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Title An investigation of vehicle HVAC cabin noise
Author(s) Mavuri, S
Watkins, S
Wang, X
St Hill, S
Weymouth, D
Year 2008
Conference name SAE World Congress and Exhibition
Conference location Detroit, United States
Conference dates 14-17 April, 2008
Proceedings title 2008 SAE World Congress
Publisher SAE International
Place of publication Warrendale, United States
Abstract Noise and vibration have an important influence on a customer's perception of vehicle quality and cabin interior noise levels are a key criteria. The interior sound levels of automobiles have been significantly reduced over the years, with reductions in power train, tire and external wind noise. One of the highest in-cabin noise levels now arises from heating, ventilating and air conditioning systems, generated by the air-rush noise at various HVAC settings. Thus quieter climate control systems are desired by car manufacturers. A systematic benchmarking study was performed to investigate the in-cabin noise of vehicles. Twenty-one passenger cars including compact, mid-size, full-size, and a truck were selected. Tests were conducted on relatively new production vehicles in various conditions. A binaural head system was used in front passenger seat to measure noise levels. The methodology used and the experimental results were presented in this paper. It was found that the design of the HVAC system has a major influence on the vehicle in-cabin acoustic performance. The size/price of the vehicle may not correlate to the cabin quietness due to the complexity of acoustic effects in the HVAC system.
Subjects Automotive Engineering Materials
Copyright notice SAE Paper 2008-01-0836 © 2008 SAE International. This paper is posted on this site with permission from SAE International. As a user of this site, you are permitted to view this paper on-line, and print one copy of this paper at no cost for your use only. This paper may not be copied, distributed or forwarded to others for further use without permission from SAE.
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