Turbocharger turbine aerodynamic optimization for reduced fuel consumption and CO2 emissions from heavy-duty diesel engines: Experimental validation and flow field analysis

E. Ioannou, A. W. Costall, U. Khairuddin, P. Ramasamy, E. Haigh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper describes aerodynamic optimization of the high pressure turbine in a two-stage heavy-duty diesel engine air system. A genetic algorithm generates designs that reduce fuel consumption and CO2 emissions by maximizing turbine efficiency, while meeting boost and packaging requirements. Scaling the baseline 47 mm diameter turbine to 83.6 mm permits on-design testing. Optimization of the scaled baseline predicts a 2.1%-point on-design benefit, confirmed by experiments which measure a 2.6%-point efficiency gain. This validates both the CFD model and the optimization process. CFD flow field analysis reveals the aerodynamic loss in the blade tip region is significantly improved by the optimized design.

Original languageEnglish
Title of host publicationInstitution of Mechanical Engineers - 13th International Conference on Turbochargers and Turbocharging 2018
PublisherInstitution of Mechanical Engineers
Pages373-388
Number of pages16
ISBN (Electronic)9781510873872
Publication statusPublished - 2018
Event13th International Conference on Turbochargers and Turbocharging 2018 - London, UK United Kingdom
Duration: 16 May 201817 May 2018

Publication series

NameInstitution of Mechanical Engineers - 13th International Conference on Turbochargers and Turbocharging 2018

Conference

Conference13th International Conference on Turbochargers and Turbocharging 2018
CountryUK United Kingdom
CityLondon
Period16/05/1817/05/18

ASJC Scopus subject areas

  • Fuel Technology
  • Automotive Engineering

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