Modeling and extrapolating mass flow characteristics of a radial turbocharger turbine

Zhu, Sipeng; Deng, Kangyao; Liu, Sheng

doi:10.1016/j.energy.2015.05.032

Cited by 33 publications

(18 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A further hypothesis of this model is that the pressure drop across the rotor and stator is the same. Indeed, in radial fixed geometry turbine it is common practice assuming R = 0.5, where R is the reaction degree which represents a measure of how much expansion occurs in the rotor compared to the total [18]. Hence, imposing R = 0.5, half expansion is in the stator, and the other half is in the rotor; by calculating this value, it is possible to evaluate A eff .…”

Section: Extrapolation Of Vgt Mass Flow Mapmentioning

confidence: 99%

Exhaust Energy Recovery with Variable Geometry Turbine to Reduce Fuel Consumption for Microcars

Ortenzi¹,

Genovese²,

Carrazza³

et al. 2018

SAE Technical Paper Series

View full text Add to dashboard Cite

he objective proposed by EU to reduce by about 4%/ year CO 2 emission of internal combustion engines for the next years up to 2030, requires to increase the engine efficiency and accordingly improving the technology. In this framework, hybrid powertrains can have the possibility of a deep market penetration since they may recover energy during brake, allow the engine to operate in better efficiency conditions and with less transients, Moreover, they can recover a large amount of energy lost through the exhaust and use it to reduce fuel consumption. This paper concerns the modification of a conventional two in-line cylinders Diesel engine (440 cm 3) adding a variable geometry turbine (VGT) coupled with a generator. The turbine is used to recover exhaust gas energy that otherwise would be lost. The generator, connected to the turbo shaft, converts mechanical energy into electrical energy and is used to charge the vehicle battery or the auxiliaries. The aim of this work is reducing fuel consumption by replacing the alternator with a kind of electric turbo-compounding system to drive vehicle auxiliaries. If the selected turbine recovers enough energy to power auxiliaries, the alternator, which usually has low efficiency, can be removed. Along these lines, fuel consumption savings can be achieved. At a later stage, a microcar has been tested on WLTC (Class 1) driving cycle. The results show fuel consumption reduction of 6 to 9%, depending on VGT size. Indeed, four different VGT sizes have been analyzed to choose the optimal configuration that reflects a compromise between energy recovery and fuel consumption reductions.

show abstract

Section: Extrapolation Of Vgt Mass Flow Mapmentioning

confidence: 99%

Exhaust Energy Recovery with Variable Geometry Turbine to Reduce Fuel Consumption for Microcars

Ortenzi¹,

Genovese²,

Carrazza³

et al. 2018

SAE Technical Paper Series

View full text Add to dashboard Cite

show abstract

“…However, these measurement techniques are not common practice yet. Nevertheless, wide maps are particularly needed to feed them to one dimensional engine simulation models (Payri et al [10], Romagnoli and Martinez-Botas [3] and Zhu et al [11]) and to predict engine matching. Galindo et al [2] and Aymanns et al [12] have shown the need of extended map regions up to almost zero turbine torque, since these operating conditions are covered by typical engine pulsating flow.…”

Section: Introductionmentioning

confidence: 99%

Turbocharger turbine rotor tip leakage loss and mass flow model valid up to extreme off-design conditions with high blade to jet speed ratio

Serrano

Garcia

Inhestern

2018

Energy

View full text Add to dashboard Cite

show abstract

“…A mobile small- application market is currently ongoing [35] and it is receiving more analytical studies by [30,31,32]. While the detailed studies are conducted of radial-inflow turbine that combined with mean-line design and ORC cycle analysis and followed by three-dimensional CFD simulation for a number of working fluids and operating conditions as reported by Sauret et al [1,27,36] and other studies [2][3][4][5][6][7][8][9][10][11]15,17,21,22,26,29,33,34].…”

Section: Turbine Designmentioning

confidence: 99%

“…conditions; the turbine is considered a key component of the ORC system and its performance (efficiency and power output) significantly affects the ORC's thermal efficiency. Mean-line design of a radial-inflow turbine for ORC applications was performed for low power output levels in [1,2,3,4,5,6,7,8,9,10,11] with maximum turbine isentropic efficiency of 84% as reported in [10].…”

Section: Introductionmentioning

confidence: 99%

Modelling and parametric analysis of small-scale axial and radial-outflow turbines for Organic Rankine Cycle applications

et al. 2017

View full text Add to dashboard Cite

Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

show abstract

Modeling and extrapolating mass flow characteristics of a radial turbocharger turbine

Cited by 33 publications

References 28 publications

Exhaust Energy Recovery with Variable Geometry Turbine to Reduce Fuel Consumption for Microcars

Exhaust Energy Recovery with Variable Geometry Turbine to Reduce Fuel Consumption for Microcars

Turbocharger turbine rotor tip leakage loss and mass flow model valid up to extreme off-design conditions with high blade to jet speed ratio

Modelling and parametric analysis of small-scale axial and radial-outflow turbines for Organic Rankine Cycle applications

Contact Info

Product

Resources

About