Dynamic Loads in the Three-Lobe Supercharger

[+] Author and Article Information
G. C. Mimmi

Università degli studi di Pavia, Dipartimento di Meccanica Strutturale, Via Ferrata, 1, I-27100 Pavia, Italy

P. E. Pennacchi

Politecnico di Milano, Dipartimento di Meccanica, P.zza L. da Vinci, 32, I-20133 Milano, Italy

J. Mech. Des 121(4), 602-605 (Dec 01, 1999) (4 pages) doi:10.1115/1.2829505 History: Received November 01, 1998; Revised August 01, 1999; Online December 11, 2007


In previous papers the authors have analyzed the functioning of the three lobe supercharger. This analysis was made possible by a complete analytical model of the rotors. The dynamic transformation of the chambers occupied by the fluid allows us to point out specific problems regarding trapped volumes and to design special devices to avoid these problems. As a result it is possible to simulate the performance of the compressor and to propose an analytical model in order to determine the dynamic loads on the rotors. The topic of this paper is the comparison between the performances achieved by helical and spur rotors, with particular attention to the loads, force and moment, acting on the rotors.

Copyright © 1999 by The American Society of Mechanical Engineers
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