Influence of Air Condition Characteristics on a Vehicle Interior Noise

Hammad, Nabil

doi:10.4271/2010-01-0752

Cited by 3 publications

(1 citation statement)

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“…However, in addition to traditional vehicles’ noise and vibration problems, it is necessary to diagnose and solve major problems, including abnormal noises from the air conditioning (AC) compressor. 1 This noise is usually a relatively low-frequency noise. 2 There have been many complaints about the unpleasant sensation this causes for users of these vehicles, and these noises cannot usually be prevented by use of acoustic material, and perhaps can only be resolved through improving the structural design.…”

Section: Introductionmentioning

confidence: 99%

Diagnosis and analysis of abnormal noise in the pure electric vehicle’s air condition compressor at idle

Zhiwei

Yigang

2018

Journal of Low Frequency Noise, Vibration and Active Control

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A pure electric vehicle may produce an abnormal 'clicking noise' when idling, especially as start-up, which can be a serious problem in terms of product performance. In this paper: (1) professional evaluators carry out subjective evaluations and the abnormal noise-generation mechanism and its transfer path are analysed; (2) the mode shape and sound pressure distribution are both simulated using the finite element method; (3) the AC compressor's sound source is identified and located in the main frequency domain using the acoustic array and image formation method, so vibration and interior vehicle noise measurements from the compressor are carried out; and (4) based on the established causes of the abnormal noise, three effective approaches-structure reinforcement, manufacturing process improvement and start-up control optimization-are presented to help prevent abnormal noises from the AC compressor.

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Section: Introductionmentioning

confidence: 99%