Simulation of a Diesel Engine with Variable Geometry Turbocharger and Parametric Study of Variable Vane Position on Engine Performance

  • Anand Mammen Thomas Research and Innovation Centre, Chennai
  • Jensen Samuel J. Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai
  • Paul Pramod M. Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai
  • A. Ramesh Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai
  • R. Murugesan Combat Vehicles Research and Development Organisation, Chennai
  • A. Kumarasamy Combat Vehicles Research and Development Organisation, Chennai
DOI: https://doi.org/10.14429/dsj.67.11451
Keywords: Thermodynamic simulation, Variable geometry turbocharger, Diesel engine

Abstract

Modelling of a turbocharger is of interest to the engine designer as the work developed by the turbine can be used to drive a compressor coupled to it. This positively influences charge air density and engine power to weight ratio. Variable geometry turbocharger (VGT) additionally has a controllable nozzle ring which is normally electro-pneumatically actuated. This additional degree of freedom offers efficient matching of the effective turbine area for a wide range of engine mass flow rates. Closing of the nozzle ring (vanes tangential to rotor) result in more turbine work and deliver higher boost pressure but it also increases the back pressure on the engine induced by reduced turbine effective area. This adversely affects the net engine torque as the pumping work required increases. Hence, the optimum vane position for a given engine operating point is to be found through simulations or experimentation. A thermodynamic simulation model of a 2.2l 4 cylinder diesel engine was developed for investigation of different control strategies. Model features map based performance prediction of the VGT. Performance of the engine was simulated for steady state operation and validated with experimentation. The results of the parametric study of VGT’s vane position on the engine performance are discussed.

Author Biographies

Anand Mammen Thomas, Research and Innovation Centre, Chennai

Mr Anand Mammen Thomas, completed Bachelor’s in Mechanical Engineering from College of Engineering, Trivandrum, in 2007 and currently pursuing Master’s in Mechanical Engineering at IIT Madras. Presently working as Scientist ‘C’ in Research & Innovation Centre, IIT Madras Research Park, Chennai and is working on control strategies for a common rail direct injection armoured fighting vehicle engine. He has worked on designing and developing engine subsystems like air filtration and turbochargers. His research interests include : Modelling and control of transient response of turbo-charging systems.

Jensen Samuel J., Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai

Mr Jensen Samuel J., completed his Masters in Internal Combustion Engineering from College of Engineering Guindy, Anna University Chennai in 2011. Presently pursuing his PhD from Indian Institute of Technology Madras and working on modelling combustion for RT model-based control of Diesel engines during steady and transient operating conditions. Research interests include: IC engine testing, data acquisition, physics-based modelling and control.

Paul Pramod M., Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai

Mr Paul Pramod M., completed his Bachelor’s in Mechanical Engineering at Indian Institute of Technology, Madras. Currently pursuing his Master’s in Automotive Engineering at RWTH Aachen University, Germany and also working as student worker in FEV Europe GmbH.

A. Ramesh, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai

Dr A. Ramesh, obtained his PhD (Internal combustion engines) from IIT Madras and post doctoral research work from Ecole Des Mines De Nantes, France. He is an Institute Chair Professor of Mechanical Engineering and also head of the Center for Continuing Education in IIT Madras. He has published over 135 research papers on GDI and HCCI engines, alternative fuels and engine management. He has filed/obtained several patents.

R. Murugesan, Combat Vehicles Research and Development Organisation, Chennai

Mr R. Murugesan, is a post graduate engineer and working as Scientist ‘F’ in Combat Vehicles R&D Establishment, Chennai. He has more than 28 years of experience and worked extensively in design and development of diesel engine and its sub-systems for armoured fighting vehicles and its evaluation. He is currently leading the Centre for Engineering Analysis Division (CEAD) in CVRDE.

A. Kumarasamy, Combat Vehicles Research and Development Organisation, Chennai

Mr A. Kumarasamy, completed Masters from IITM, Chennai in 1995. W Working as Scientist ‘G’ in CVRDE, Chennai and heading engine division. Developed compact cooling system for combat vehicles. Guided and upgraded power output of an existing engine and evaluated at field conditions. Presently guiding a team for developing engines for 400 – 1500 hp range. His research interests include diesel engine for armoured fighting vehicles (AFVs) for 400 to 1500 hp range, compact cooling system for AFVs, efficient air filtration system for AFVs, advanced & efficient technologies for sub systems of diesel engine and its peripheral systems.

Published
2017-06-30
How to Cite
Thomas, A., Samuel J., J., Pramod M., P., Ramesh, A., Murugesan, R., & Kumarasamy, A. (2017). Simulation of a Diesel Engine with Variable Geometry Turbocharger and Parametric Study of Variable Vane Position on Engine Performance. Defence Science Journal, 67(4), 375-381. https://doi.org/10.14429/dsj.67.11451
Issue
Vol 67 No 4: Combat Vehicle
Section
Special Issue Papers
Copyright (c) 2017 Defence Science Journal

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