Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up Test

Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up Test

During turbocharger rotor speed-up tests, the sensor installed in the compressor greatly affects the rotor dynamics. The effect of the floating bearing stiffness coefficient on the critical rotational speeds and the shaft dynamic response due to the unbalanced mass were both analyzed using rotor dyn...

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Bibliographic Details
Main Authors: Liming Zhai, Yongyao Luo, Zhengwei Wang, Xin Liu
Format: Article
Language:English
Published: SAGE Publishing 2014-07-01
Series:Advances in Mechanical Engineering
Online Access:https://doi.org/10.1155/2014/476023
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spelling doaj-c7e2f222693f498f91810bffb45c8a2d2020-11-25T02:58:17ZengSAGE PublishingAdvances in Mechanical Engineering1687-81322014-07-01610.1155/2014/47602310.1155_2014/476023Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up TestLiming ZhaiYongyao LuoZhengwei WangXin LiuDuring turbocharger rotor speed-up tests, the sensor installed in the compressor greatly affects the rotor dynamics. The effect of the floating bearing stiffness coefficient on the critical rotational speeds and the shaft dynamic response due to the unbalanced mass were both analyzed using rotor dynamics theory and a finite element analysis. The results illustrate that the initial sensor design reduced the 3rd order critical speed to lower than the maximum normal operating speed which leads to the rubbing and failure of the rotor during the speed-up test. The sensor structure was then optimized to reduce the negative influence of the sensor on the rotor dynamic characteristics to ensure stability during rotor speed-up tests.https://doi.org/10.1155/2014/476023
collection DOAJ
language English
format Article
sources DOAJ
author Liming Zhai
Yongyao Luo
Zhengwei Wang
Xin Liu
spellingShingle Liming Zhai
Yongyao Luo
Zhengwei Wang
Xin Liu
Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up Test
Advances in Mechanical Engineering
author_facet Liming Zhai
Yongyao Luo
Zhengwei Wang
Xin Liu
author_sort Liming Zhai
title Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up Test
title_short Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up Test
title_full Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up Test
title_fullStr Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up Test
title_full_unstemmed Failure Analysis and Optimization of the Rotor System in a Diesel Turbocharger for Rotor Speed-Up Test
title_sort failure analysis and optimization of the rotor system in a diesel turbocharger for rotor speed-up test
publisher SAGE Publishing
series Advances in Mechanical Engineering
issn 1687-8132
publishDate 2014-07-01
description During turbocharger rotor speed-up tests, the sensor installed in the compressor greatly affects the rotor dynamics. The effect of the floating bearing stiffness coefficient on the critical rotational speeds and the shaft dynamic response due to the unbalanced mass were both analyzed using rotor dynamics theory and a finite element analysis. The results illustrate that the initial sensor design reduced the 3rd order critical speed to lower than the maximum normal operating speed which leads to the rubbing and failure of the rotor during the speed-up test. The sensor structure was then optimized to reduce the negative influence of the sensor on the rotor dynamic characteristics to ensure stability during rotor speed-up tests.
url https://doi.org/10.1155/2014/476023
work_keys_str_mv AT limingzhai failureanalysisandoptimizationoftherotorsysteminadieselturbochargerforrotorspeeduptest
AT yongyaoluo failureanalysisandoptimizationoftherotorsysteminadieselturbochargerforrotorspeeduptest
AT zhengweiwang failureanalysisandoptimizationoftherotorsysteminadieselturbochargerforrotorspeeduptest
AT xinliu failureanalysisandoptimizationoftherotorsysteminadieselturbochargerforrotorspeeduptest
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