Experimental analysis of engine exhaust waste energy recovery using power turbine technology for light duty application

Rutger Dijkstra, Michael Boot, Ruud Eichhorn, David Smeulders, Johan Lennblad, Alexander Serrarens

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Abstract

An experimental analysis was executed on a NA (Natural Aspirated) 4-stroke gasoline engine to investigate the potential of exhaust waste energy recovery using power turbine technology for light duty application. Restrictions with decreasing diameter were mounted in the exhaust to simulate different vane positions of a VGT (Variable Geometry Turbine) and in-cylinder pressure measurements were performed to evaluate the effect of increased exhaust back pressure on intake- and exhaust pumping losses and on engine performance. Test points in the engine map were chosen on the basis of high residence time for the vehicle during the NEDC (New European Driving Cycle). The theoretically retrievable power was calculated in case a turbine is mounted instead of a restriction and the net balance was obtained between pumping power losses and recovered energy.

Original languageEnglish
Article number2012-01-1749
Pages (from-to)1729-1739
Number of pages11
JournalSAE International Journal of Engines
Volume5
Issue number4
DOIs
Publication statusPublished - 10 Sep 2012

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