Abstract

Due to the serious issues caused by air pollution and global warming, emission regulations are becoming stricter. New technologies that reduce NOx and PM emissions are needed. To cope with these social exhaust gas regulation demands, many advanced countries are striving to develop eco-friendly vehicles in order to respond to stricter emissions regulations. The homogeneous charged compression ignition engine (HCCI) incorporates a multi-stage combustion engine with multiple combustion modes, catalyst, direct fuel injection and partial mixing combustion. In this study, the HCCI combustion was applied to analyze and review the results of engines applying HCCI combustion without altering the conventional engine specifications. The optimization of exhaust gas recirculation (EGR) and compression ratio changes provides an optimal fuel economy. In this study, potential for optimum economy within the range of IMEP 0.8 MPa has been evaluated.

Highlights

  • Due to the severity of air pollution caused by global automobile emissions, exhaust air emissions are being intensified

  • The application is expanding the scope of multiple combustion modes, the application of catalyst applications, the use of direct fuel supply, and the incorporation of partial examples [1,2,3,4,5,6,7,8]

  • As the 2nd stage injection system was applied to this study rather than the implementation of a complete homogeneous composite compression ignition (HCCI) combustion setup, there is a tendency towards partial premixed diesel combustion, and the effects of various combustion factors for improving combustion and exhaust performance are discussed

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Summary

Introduction

Due to the severity of air pollution caused by global automobile emissions, exhaust air emissions are being intensified. A new concept of combustion technology is urgently needed to achieve reductions in NOx and PM emissions at the combustion level. Based on this backdrop, the advanced countries are striving to develop eco-friendly cars for environment-friendly cars. At the center of the new generation of engines for these next-generation vehicles is the homogeneous composite compression ignition (HCCI) combustion concept. The application is expanding the scope of multiple combustion modes, the application of catalyst applications, the use of direct fuel supply, and the incorporation of partial examples [1,2,3,4,5,6,7,8]

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