An Assessment of the Impact of Exhaust Turbine Redesign, for Narrow VGT Operating Range, on the Performance of Diesel Engines with Assisted Turbocharger

Song, Kyung‐Sik; Upadhyay, Devesh; Hu, Liangjun; Xie, Hui

doi:10.4271/2019-01-0326

Cited by 2 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A partial admission effective area determination method has been carried out to predict the turbine mass flow parameter (Katra snik, 2007). Song et al (2019) studied the effect of the redesign of the VGT system on a regenerative electrically assisted turbocharger for narrowing the VGT operating range. Their design permitted a gain of 5% in the VGT efficiency and an improvement of around 1% of the engine Brake Specific Fuel Consumption (BSFC).…”

Section: Introductionmentioning

confidence: 99%

A methodology for loss and performance assessment of a variable geometry turbocharger turbine through a new meanline FORTRAN program

Ketata

Driss

2021

View full text Add to dashboard Cite

PurposeVariable geometry turbine (VGT), a key component of modern internal combustion engines (ICE) turbochargers, is increasingly used for better efficiency and reduced exhaust gas emissions. The aim of this study is the development of a new meanline FORTRAN code for accurate performance and loss assessment of VGTs under a wider operating range. This code is a useful alternative tool for engineers for fast design of VGT systems where higher efficiency and minimum loss are being required.Design/methodology/approachThe proposed meanline code was applied to a variable geometry mixed flow turbine at different nozzle vane angles and under a wide range of rotational speed and the expansion ratio. The numerical methodology was validated through a comparison of the predicted performance to test data. The maps of the mass flow rate as well as the efficiency of the VGT system are discussed for different nozzle vane angles under a wide range of rotational speed. Based on the developed model, a breakdown loss analysis was carried out showing a significant effect of the nozzle vane angle on the loss distribution.FindingsResults indicated that the nozzle angle of 70° has led to the maximum efficiency compared to the other investigated nozzle vane angles ranging from 30° up to 80°. The results showed that the passage loss was significantly reduced as the nozzle vane angle increases from 30° up to 70°.Originality/valueThis paper outlines a new meanline approach for variable geometry turbocharger turbines. The developed code presents the novelty of including the effect of the vane radii variation, due to the pivoting mechanism of the nozzle ring. The developed code can be generalized to either radial or mixed flow turbines with or without a VGT system.

show abstract

Section: Introductionmentioning

confidence: 99%

A methodology for loss and performance assessment of a variable geometry turbocharger turbine through a new meanline FORTRAN program

Ketata

Driss

2021

View full text Add to dashboard Cite

show abstract

Experimental investigation on single cylinder four stroke VCR tri-charged diesel engine

L.¹,

V.²

2022

Materials Today: Proceedings

View full text Add to dashboard Cite

An Assessment of the Impact of Exhaust Turbine Redesign, for Narrow VGT Operating Range, on the Performance of Diesel Engines with Assisted Turbocharger

Cited by 2 publications

References 16 publications

A methodology for loss and performance assessment of a variable geometry turbocharger turbine through a new meanline FORTRAN program

A methodology for loss and performance assessment of a variable geometry turbocharger turbine through a new meanline FORTRAN program

Experimental investigation on single cylinder four stroke VCR tri-charged diesel engine

Contact Info

Product

Resources

About