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Article

Influence of Fluid Film Bearings with Different Axial Groove Shapes on Automotive Turbochargers: An Experimental Study

by
Luiz Henrique Jorge Machado
1,2,*,
Oscar Ricardo Sandoval
1,2,3,
José Victor Matos Carvalho Pereira
2,
Juliana Primo Basílio de Souza
1,3,4,
Bryan Castro Caetano
1,2,5,
Vítor Mourão Hanriot
2,6,
Fabrício José Pacheco Pujatti
1,2,3 and
Marco Tulio Correa de Faria
1,3
1
Graduate Program in Mechanical Engineering, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
2
Mobility Technology Center, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
3
Department of Mechanical Engineering, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
4
Graduate Program in Mechanical Engineering and Materials Technology, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca, Rio de Janeiro 20271-110, Brazil
5
Centro Federal de Educação Tecnológica de Minas Gerais, Campus Nepomuceno, Nepomuceno 37250-000, Brazil
6
Graduate Program in Electrical Engineering, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
*
Author to whom correspondence should be addressed.
Lubricants 2022, 10(5), 92; https://doi.org/10.3390/lubricants10050092
Submission received: 21 April 2022 / Revised: 7 May 2022 / Accepted: 7 May 2022 / Published: 11 May 2022
(This article belongs to the Special Issue Automotive Tribology II)
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Abstract

Most commercial automotive turbochargers (TC) employ semi-floating ring bearings (SFRB) with axial groove shapes. In order to bring some insights into the role played by the axial groove geometry on the dynamics of TC, this work deals with an experimental study of the rotordynamic behavior of a stock automotive turbocharger operating on SFRB with two different groove shapes, which have the same volume and width, and with the same number of grooves. The rotating machine behavior has been evaluated under different operating conditions using a test bench specially designed to analyze turbochargers. Rotordynamic (RD) characteristics of automotive turbochargers are estimated to evaluate the influence of the axial groove geometry on the machine vibratory behavior. Frequency spectra and orbital plots of the rotor are obtained from accelerometers and proximity probes mounted on the turbocharger. The comparative analysis of the vibrational behavior of automotive turbochargers running on different supporting systems allows the identification of the role played by the axial grooves on the machine rotordynamic performance. The experimental results rendered in this work permit to classify the influence of the axial groove geometry on the turbocharger rotordynamic behavior for several speed and flow conditions.
Keywords: turbocharger; floating ring bearing; axial groove bearing; vibration analysis turbocharger; floating ring bearing; axial groove bearing; vibration analysis

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MDPI and ACS Style

Machado, L.H.J.; Sandoval, O.R.; Pereira, J.V.M.C.; de Souza, J.P.B.; Caetano, B.C.; Hanriot, V.M.; Pujatti, F.J.P.; de Faria, M.T.C. Influence of Fluid Film Bearings with Different Axial Groove Shapes on Automotive Turbochargers: An Experimental Study. Lubricants 2022, 10, 92. https://doi.org/10.3390/lubricants10050092

AMA Style

Machado LHJ, Sandoval OR, Pereira JVMC, de Souza JPB, Caetano BC, Hanriot VM, Pujatti FJP, de Faria MTC. Influence of Fluid Film Bearings with Different Axial Groove Shapes on Automotive Turbochargers: An Experimental Study. Lubricants. 2022; 10(5):92. https://doi.org/10.3390/lubricants10050092

Chicago/Turabian Style

Machado, Luiz Henrique Jorge, Oscar Ricardo Sandoval, José Victor Matos Carvalho Pereira, Juliana Primo Basílio de Souza, Bryan Castro Caetano, Vítor Mourão Hanriot, Fabrício José Pacheco Pujatti, and Marco Tulio Correa de Faria. 2022. "Influence of Fluid Film Bearings with Different Axial Groove Shapes on Automotive Turbochargers: An Experimental Study" Lubricants 10, no. 5: 92. https://doi.org/10.3390/lubricants10050092

APA Style

Machado, L. H. J., Sandoval, O. R., Pereira, J. V. M. C., de Souza, J. P. B., Caetano, B. C., Hanriot, V. M., Pujatti, F. J. P., & de Faria, M. T. C. (2022). Influence of Fluid Film Bearings with Different Axial Groove Shapes on Automotive Turbochargers: An Experimental Study. Lubricants, 10(5), 92. https://doi.org/10.3390/lubricants10050092

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