The Journal of Engine Research

The Journal of Engine Research

Turbocharger bearing housing temperature measurement at different engine operating ‎conditions

Document Type : Original Article

Authors
Jafar Hashemi Daryan 1
Hooman Cheraghmakani 1
Saeed Mousavi 1
Ali Etelaat 1
Mohammad Nejat 1
Mahdi Maghsoudi 2
1 Irankhodro Powertrain Company (IPCo), Tehran, Iran
2 Basatondshar Company, Tehran, Iran
10.22034/er.2024.2025048.1039
Abstract
Oil coking and turbine seal ring melting are among the main failure modes of engine turbochargers. During the turbocharged internal combustion engine development process, the cooling and lubrication system must be checked for appropriateness of the desired condition for turbocharger journal bearing and seal rings which the turbocharger manufacturer defines. In this study turbine and compressor journal bearings and turbine seal ring temperature were measured at different engine speeds and loads as well as coolant flow at engine hot shutdown conditions. Also, the effect of inlet coolant temperature and exhaust gas entering the turbine housing on bearing housing temperature was investigated. The experimental test shows that maximum heat transfer from the turbocharger to the coolant is at the engine's maximum power point. Among measured points, turbine sealing always has the highest, and Compressor journal bearing has the lowest temperature. Coolant and oil temperature are the main controllers of temperatures but exhaust gas temperature has a lower effect on temperature at the investigated point.
Keywords
Experimental Test
Turbocharger
Bearing Housing
Internal Combustion Engine
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  • Receive Date 02 April 2024
  • Revise Date 09 May 2024
  • Accept Date 10 May 2024