Abstract—The research work carried out with the aim of improving the performance of diesel engine by modifying the piston head in view of promoting the uniform combustion by inducing turbulence in the incoming charge. The experiments are conducted at constant speed with 20.1 compression ratio and 300 bar injection pressure at three different injection timings. A stirrer is introduced at the top of the piston so as to create more turbulence in the incoming charge for enhancing the vaporization rate. Whirling motion is created in a combustible mixture by providing rotating blades in the cavity/bowl on the reciprocating piston head. The oscillatory motion of the connecting rod will cause to rotate the blade by an angle of 60°. The final experimental result shows that, the modified piston performance and emission results are achieved better compared to normal piston at all injection timings. 
 

Index Terms— diesel engine, piston, turbulence, diesel

Cite: K Vijaya Kumar, Damera Babitha, K Srinivasa Raghavan, P Shailesh, Sunchu Abhishekaran, and Sunchu Anusthitha, "Investigation of Diesel Engine Performance with Design Modifications in Piston: Inducing Turbulence by Swirl," International Journal of Mechanical Engineering and Robotics Research, Vol. 7, No. 5, pp. 495-499, September 2018. DOI: 10.18178/ijmerr.7.5.495-499