Table of Contents
ISRN Mechanical Engineering
Volume 2013, Article ID 521375, 12 pages
http://dx.doi.org/10.1155/2013/521375
Research Article

Modeling of Homogeneous Mixture Formation and Combustion in GDI Engine with Negative Valve Overlap

Department of Mechanical Engineering, Amrita Vishwa Vidyapeetham, Coimbatore 641112, India

Received 31 July 2013; Accepted 27 August 2013

Academic Editors: F. Liu and Z. Yu

Copyright © 2013 M. K. Lalith et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Mixture homogeneity plays a crucial role in HCCI engine. In the present study, the mixture homogeneity was analysed by three-dimensional engine model. Combustion was studied by zero-dimensional single zone model. The engine parameters studied include speed, injector location, valve lift, and mass of fuel injected. Valve lift and injector location had less impact on mixture formation and combustion phasing compared to other parameters. Engine speed had a noticeable effect on mixture homogeneity and combustion characteristics.