Optimization of Compression Ratio of Diesel Engine to Reduce its Effect on the Environment

Paper Presented At NCEEE Conference

IJEP 39(2): 145-151 : Vol. 39 Issue. 2 (February 2019)

B.A. Saravanan1, K.L. Senthil Kumar2 and N. Sellappan3

1. Sri Ramakrishna Engineering College, Department of Mechanical Engineering, Coimbatore -641 022
2. Bannari Amman Institute of Technology, Department of Mechatronics Engineering, Sathyamangalam – 638 401
3. Salalah College of Technology, Department of Mechanical Engineering, Salalah, Sultanate of Oman


Diesel is one of the largest contributors to environmental pollution worldwide and will remain so, with a large increase in vehicle population causing ever increasing global emissions. So, it is mandatory to achieve a standard compression ratio of a diesel engine to have optimal performance. In this study, the effect of different compression ratios, injection timing and load on engine performance of diesel engine fuelled with diesel fuel was studied. The optimum compression ratio, injection timing and load were determined by using the design of experiments (DOE). These results for the diesel fuelled variable compression ratio diesel engine will be useful in fixing the optimal range of values for the input variables.  


Variable compression engine, Compression ratio, Design of experiments, Injection timing