All automotive components are engineered to be as quiet and smooth running as possible. This takes into account structure borne noise as well as air borne noise. A standard air conditioning compressor is analyzed statically (outof- vehicle testing) in this study to better understand noise and vibration traits. Mode shapes of the compressor, associated with noise, are extracted in an operating frequency range and shown to be modeled after a simple two degree of freedom system. Bearing free play in the pulley is cited as another possible source of noise. Lastly, with the use of theoretical damping, the sound pressure measurements around the unit are reduced. Future recommendations are discussed.
Library of Congress Subject Headings
Automobiles--Air conditioning--Equipment and supplies--Research; Compressors--Vibration--Measurement; Compressors--Noise--Measurement; Rotors--Dynamics--Research
Department, Program, or Center
Mechanical Engineering (KGCOE)
DePasquale, Charles, "A Study of an under hood automotive air-conditioning component for the purposes of noise and vibration reduction" (1997). Thesis. Rochester Institute of Technology. Accessed from
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