Published Paper Details:

The piston in an internal combustion (IC) engine is subjected to several forces before transmitting power to the crankshaft. The main objective of this study is to analyze the stress distribution and deformation of a diesel-CNG dual-fuel engine piston when exposed to the gas pressure generated during combustion. An aluminum alloy piston was selected for the analysis, and suitable design parameters were assumed to develop the piston geometry. The stress and deformation caused by the maximum combustion pressure were analyzed using FEA-based software. The boundary conditions considered different peak combustion pressures corresponding to various CNG substitution rates acting on the piston. The results reveal that the piston crown experiences the highest deformation, with a maximum value of 0.075 mm, while the maximum Equivalent [von-Mises] Stress is found to be approximately 300 MPa, when tested with zero CNG substitution and pure diesel used and the lowest deformation of 00.062mm at 80% CNG substitution rate with maximum Equivalent [von-Mises] Stress is found to be approximately 240 MPa.