Department of Mechanical Engineering, Sri Venkateswara College of Engineering, Pennalur, Sriperumbudur Taluk–602 117, Tamil Nadu, India
*Email: arumugam@svce.ac.in
Online published on 29 August, 2016.
The present work investigates the experimental and mathematical modelling in a DI-CI engine. The two combustion chambers, namely, spherical combustion chamber (SCC) and toroidal combustion chamber (TCC), were fitted into a constant speed single cylinder direct injection compression ignition (DI-CI) engine maintaining constant compression ratio. The experiments were performed at different loads from zero to maximum load, corresponding to rated power. The influences of the combustion chamber geometry characteristics on combustion, performance, and emissions characteristics have been investigated. In mathematical modelling, regression analysis is used to generate an equation and Minitab software is used to statically illustrate the relations between independent variable and dependent variables. However, there was a reduction of HC, CO, CO2, and NOX emissions. Square value of regression is more than 90 with minimum of errors. Also, obtained predictor variable is less than 90 for both spherical and toroidal combustion chambers.
Compression ignition, Direct injection, Spherical chamber, Toroidal chamber, Mathematical model, Regression, Emission
