International Journal of Mechanical Engineering and Technology (IJMET), ISSN 0976 – 6340(Print), ISSN 0976 – 6359(Online) Volume 4, Issue 1, January - February (2013) © IAEME 142 TURBOCHARGING OF IC ENGINE: A REVIEW Mohd Muqeem 1 , Dr. Manoj Kumar 2 1 Student, M. Tech., Mechanical Engineering Department, IFTM University, Moradabad, India, 244001 2 Professor, Mechanical Engineering Department, IFTM University, Moradabad, India, 244001 ABSTRACT Turbochargers are used throughout the automotive industry as they can enhance the output of an internal combustion (IC) engine without the need to increase its cylinder capacity. The application of such a mechanical device enables automotive manufacturers to adopt smaller displacement engines, commonly known as “engine downsizing”. Historically, turbochargers were often used to increase the potential of an already powerful IC engine. The emphasis today is to provide a feasible engineering solution to manufacturing economics and “greener” road vehicles. It is because of these reasons that turbochargers are now becoming more and more popular in automobile applications. The aim of this paper is to provide a review on the techniques used in turbocharging to increase the engine output and reduce the exhaust emission levels. KEY WORDS: Intercooler, IC Engine, Turbocharger, Volumetric Efficiency 1.0 INTRODUCTION A turbocharger is a device used to allow more power to be produced for an engine of a given size. A turbocharged engine can be more powerful and efficient than a naturally aspirated engine because the turbine forces more intake air, proportionately more fuel, into the combustion chamber than if atmospheric pressure alone is used. Its purpose is to increase the volumetric efficiency of the combustion chamber. Various new technologies have been introduced to assist the turbocharging of internal combustion engine so that the volumetric efficiency may improve more. These technologies include inter-cooling of the charged air before going in to the combustion chamber so that its mass flow rate is increased. The other technology is twin charging in which firstly the engine is boosted by a supercharger then it is INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) ISSN 0976 – 6340 (Print) ISSN 0976 – 6359 (Online) Volume 4, Issue 1, January- February (2013), pp. 142-149 © IAEME: www.iaeme.com/ijmet.asp Journal Impact Factor (2012): 3.8071 (Calculated by GISI) www.jifactor.com IJMET © I A E M E