Experimental Study of the Acoustics of an Electric Refrigerant Scroll Compressor Institute of Fluid Mechanics Erlangen

Format:

Book

Conference/Event

Author/Creator:

Saur, Lukas, author.

Contributor:

Becker, Stefan

Conference Name:

13th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference (2024-06-19 : Graz, Austria)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2024

Summary:

In electrified vehicles, auxiliary units can be a dominant source of noise, one of which is the refrigerant scroll compressor. Compared to vehicles with combustion engines, e-vehicles require larger refrigerant compressors, as in addition to the interior, the battery and the electric motors must be cooled. The compressor causes the acoustic excitation of other refrigeration circuit components and the chassis via pressure pulsations and vibration transmission, as well as emitting airborne sound directly. Sound measurements have been performed in an anechoic chamber to investigate the influence of operating conditions on the acoustics of an electric scroll compressor. This paper investigates the influence of the operating conditions on compressor acoustics and shows that rotation speed is the main factor influencing compressor noise. The sound spectra of fluid, structure and airborne noise are dominated by speed-dependent, tonal components. Additionally the effect of varying pressure, superheat, vapor content and refrigerant filling quantity on the acoustic properties of the scroll compressor have been investigated. The findings provide insights into the physical relationship between operating conditions and acoustic parameters and enable the development of suitable sound reduction measures

Notes:

Vendor supplied data

Publisher Number:

2024-01-2924

Access Restriction:

Restricted for use by site license